CN108019245B - Multiple combined cycle power plant - Google Patents

Multiple combined cycle power plant Download PDF

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Publication number
CN108019245B
CN108019245B CN201711334644.4A CN201711334644A CN108019245B CN 108019245 B CN108019245 B CN 108019245B CN 201711334644 A CN201711334644 A CN 201711334644A CN 108019245 B CN108019245 B CN 108019245B
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expander
communicated
compressor
evaporator
channel
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CN108019245A (en
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李华玉
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
    • F01K3/18—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
    • F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/02—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of multiple-expansion type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

The invention provides a multiple combined cycle power device, and belongs to the technical field of energy and power. The condenser is communicated with the mixed evaporator through a circulating pump, the expander is provided with a steam channel which is communicated with the mixed evaporator through the intermediate temperature evaporator, the mixed evaporator is provided with a steam channel which is respectively communicated with the compressor and the third expander, the compressor is provided with a steam channel which is communicated with the expander through the high temperature heat exchanger, and the third expander is provided with a steam channel which is communicated with the condenser; the condenser is communicated with the condenser through a second circulating pump, the medium-temperature evaporator and a second expander; the second compressor, the combustion chamber and the fourth expander form a gas turbine circulating system, the fourth expander is provided with a gas channel communicated with the outside through the high-temperature heat exchanger, the condenser is provided with a cooling medium channel communicated with the outside, the expander is connected with the compressor and transmits power, the fourth expander is connected with the second compressor and transmits power, and the expander, the second expander, the third expander and the fourth expander are connected with the outside and output power, so that the multiple combined cycle power device is formed.

Description

Multiple combined cycle power plant
The technical field is as follows:
the invention belongs to the technical field of energy and power.
Background art:
cold demand, heat demand and power demand are common in human life and production. In the field of power demand technology, the conversion of thermal energy into mechanical energy is an important way to obtain and provide power. For high-quality fuel represented by gasoline, diesel and natural gas, a direct-combustion type gas-steam combined cycle with high thermal efficiency should be adopted; for non-high-quality fuel and nuclear fuel, the heat efficiency is relatively ideal when indirect gas-steam combined cycle is adopted; nevertheless, their thermal efficiencies are still not perfect, the fundamental reason being that-for each basic thermal power conversion technology-they have their own inherent advantages and disadvantages; meanwhile, the power devices are often in large load, and the significance of improving the heat efficiency is great.
In terms of a low-temperature discharge link, the steam power cycle has the best advantage, but the temperature difference loss of a heat transfer link is large when the variable-temperature heat source heat load is obtained; in terms of the acquisition link of high-temperature heat load, the cycle of the gas turbine has unique advantages, but the temperature difference loss of the heat discharge link is large; thus, the focus of improving the thermal efficiency of both types of combined gas-steam cycles is to reduce the temperature differential losses of the steam power cycle. Therefore, the invention provides a multiple combined cycle power device which reserves the advantages of a steam power cycle, overcomes the defects of the steam power cycle and has higher thermal efficiency than the traditional gas-steam combined cycle.
The invention content is as follows:
the invention mainly aims to provide a multiple combined cycle power plant, and the specific contents are explained as follows:
1. the multi-combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander and a second high-temperature heat exchanger; the condenser is provided with a condensate pipeline which is communicated with the mixed evaporator through a circulating pump, the expander is provided with a steam channel which is communicated with the mixed evaporator through a medium temperature evaporator, the mixed evaporator is also provided with a steam channel which is respectively communicated with the compressor and the third expander, the compressor is also provided with a steam channel which is communicated with the expander through a high temperature heat exchanger, and the third expander is also provided with a steam channel which is communicated with the condenser; the condenser is also provided with a condensate pipeline which is communicated with the medium temperature evaporator through a second circulating pump, then the medium temperature evaporator is provided with a steam channel which is communicated with a second expander, and the second expander is also provided with a steam channel which is communicated with the condenser; the external part is provided with a working medium channel communicated with the second compressor, the second compressor is also provided with a working medium channel communicated with a fourth expander through a second high-temperature heat exchanger, the fourth expander is also provided with a working medium channel communicated with the external part through the high-temperature heat exchanger, the second high-temperature heat exchanger is also provided with a heat source medium channel communicated with the external part, the high-temperature heat exchanger or the heat source medium channel is also communicated with the external part, the condenser is also provided with a cooling medium channel communicated with the external part, the expander is connected with the compressor and transmits power, the fourth expander is connected with the second compressor and transmits power, and the expander, the second expander, the third expander and the fourth expander are connected with the external part and output power, so that the multiple combined cycle power.
2. The multi-combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander and a second high-temperature heat exchanger; the condenser is provided with a condensate pipeline which is communicated with the mixed evaporator through a circulating pump, the expander is provided with a steam channel which is communicated with the mixed evaporator through a medium temperature evaporator, the mixed evaporator is also provided with a steam channel which is respectively communicated with the compressor and the third expander, the compressor is also provided with a steam channel which is communicated with the expander through a high temperature heat exchanger, and the third expander is also provided with a steam channel which is communicated with the condenser; the condenser is also provided with a condensate pipeline which is communicated with the medium temperature evaporator through a second circulating pump, then the medium temperature evaporator is provided with a steam channel which is communicated with a second expander, and the second expander is also provided with a steam channel which is communicated with the condenser; the external part is provided with a working medium channel communicated with the second compressor, the second compressor is also provided with a working medium channel communicated with a fourth expander through a second high-temperature heat exchanger, the fourth expander is also provided with a working medium channel communicated with the external part through a high-temperature heat exchanger, the second high-temperature heat exchanger is also provided with a heat source medium channel communicated with the external part, the high-temperature heat exchanger or the heat source medium channel is also communicated with the external part, the condenser is also provided with a cooling medium channel communicated with the external part, the medium-temperature evaporator or the mixed evaporator is also provided with a heat medium channel communicated with the external part, the expander is connected with the compressor and transmits power, the fourth expander is connected with the second compressor and transmits power, and the expander, the second expander, the third expander and the fourth expander are connected with the external part and output power.
3. The multi-combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander and a second high-temperature heat exchanger; the condenser is provided with a condensate pipeline which is communicated with the mixed evaporator through a circulating pump, the expander is provided with a steam channel which is communicated with the mixed evaporator through a medium temperature evaporator, the mixed evaporator is also provided with a steam channel which is respectively communicated with the compressor and the third expander, the compressor is also provided with a steam channel which is communicated with the expander through a high temperature heat exchanger, and the third expander is also provided with a steam channel which is communicated with the condenser; the condenser is also provided with a condensate pipeline which is communicated with the medium temperature evaporator through a second circulating pump, then the medium temperature evaporator is provided with a steam channel which is communicated with a second expander, and the second expander is also provided with a steam channel which is communicated with the condenser; the external part is provided with a working medium channel communicated with the second compressor, the second compressor is also provided with a working medium channel communicated with a fourth expander through a second high-temperature heat exchanger, the fourth expander is also provided with a working medium channel communicated with the external part through a high-temperature heat exchanger, the second high-temperature heat exchanger is also provided with a heat source medium channel communicated with the external part, the high-temperature heat exchanger or the heat source medium channel is also communicated with the external part, the condenser is also provided with a cooling medium channel communicated with the external part, the medium-temperature evaporator and the mixed evaporator are also respectively provided with a heat medium channel communicated with the external part, the expander is connected with the compressor and transmits power, the fourth expander is connected with the second compressor and transmits power, and the expander, the second expander, the third expander and the fourth expander are connected with the external part and outputs power.
4. The multiple combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander, a second high-temperature heat exchanger and a high-temperature heat regenerator; the condenser is provided with a condensate pipeline which is communicated with the mixed evaporator through a circulating pump, the expander is provided with a steam channel which is communicated with the mixed evaporator through a medium temperature evaporator, the mixed evaporator is also provided with a steam channel which is respectively communicated with the compressor and the third expander, the compressor is also provided with a steam channel which is communicated with the expander through a high temperature heat exchanger, and the third expander is also provided with a steam channel which is communicated with the condenser; the condenser is also provided with a condensate pipeline which is communicated with the medium temperature evaporator through a second circulating pump, then the medium temperature evaporator is provided with a steam channel which is communicated with a second expander, and the second expander is also provided with a steam channel which is communicated with the condenser; the external part is provided with a working medium channel which is communicated with a second compressor, the second compressor is also provided with a working medium channel which is communicated with a fourth expander through a high-temperature heat regenerator and a second high-temperature heat exchanger, the fourth expander is also provided with a working medium channel which is communicated with the external part through the high-temperature heat regenerator and the high-temperature heat exchanger, the second high-temperature heat exchanger is also provided with a heat source medium channel which is communicated with the external part, the high-temperature heat exchanger or the heat source medium channel is also communicated with the external part, the condenser is also provided with a cooling medium channel which is communicated with the external part, the expander is connected with the compressor and transmits power, the fourth expander is connected with the second compressor and transmits power, and the expander, the second expander, the third expander and the fourth expander are.
5. The multiple combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander, a second high-temperature heat exchanger and a high-temperature heat regenerator; the condenser is provided with a condensate pipeline which is communicated with the mixed evaporator through a circulating pump, the expander is provided with a steam channel which is communicated with the mixed evaporator through a medium temperature evaporator, the mixed evaporator is also provided with a steam channel which is respectively communicated with the compressor and the third expander, the compressor is also provided with a steam channel which is communicated with the expander through a high temperature heat exchanger, and the third expander is also provided with a steam channel which is communicated with the condenser; the condenser is also provided with a condensate pipeline which is communicated with the medium temperature evaporator through a second circulating pump, then the medium temperature evaporator is provided with a steam channel which is communicated with a second expander, and the second expander is also provided with a steam channel which is communicated with the condenser; the external part is provided with a working medium channel which is communicated with a second compressor, the second compressor is also provided with a working medium channel which is communicated with a fourth expander through a high-temperature heat regenerator and a second high-temperature heat exchanger, the fourth expander is also provided with a working medium channel which is communicated with the external part through the high-temperature heat regenerator and the high-temperature heat exchanger, the second high-temperature heat exchanger is also provided with a heat source medium channel which is communicated with the external part, the high-temperature heat exchanger or the heat source medium channel is also communicated with the external part, a condenser is also provided with a cooling medium channel which is communicated with the external part, a medium-temperature evaporator or a mixed evaporator is also provided with a heat medium channel which is communicated with the external part, the expander is connected with the compressor and transmits power, the fourth expander is connected with the second compressor and transmits power, and the expander, the second.
6. The multiple combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander, a second high-temperature heat exchanger and a high-temperature heat regenerator; the condenser is provided with a condensate pipeline which is communicated with the mixed evaporator through a circulating pump, the expander is provided with a steam channel which is communicated with the mixed evaporator through a medium temperature evaporator, the mixed evaporator is also provided with a steam channel which is respectively communicated with the compressor and the third expander, the compressor is also provided with a steam channel which is communicated with the expander through a high temperature heat exchanger, and the third expander is also provided with a steam channel which is communicated with the condenser; the condenser is also provided with a condensate pipeline which is communicated with the medium temperature evaporator through a second circulating pump, then the medium temperature evaporator is provided with a steam channel which is communicated with a second expander, and the second expander is also provided with a steam channel which is communicated with the condenser; the external part of the compressor is provided with a working medium channel which is communicated with the second compressor, the second compressor is also provided with a working medium channel which is communicated with a fourth expander through a high-temperature heat regenerator and a second high-temperature heat exchanger, the fourth expander is also provided with a working medium channel which is communicated with the external part through the high-temperature heat regenerator and the high-temperature heat exchanger, the second high-temperature heat exchanger is also provided with a heat source medium channel which is communicated with the external part, the high-temperature heat exchanger or the heat source medium channel is also communicated with the external part, the condenser is also provided with a cooling medium channel which is communicated with the external part, the medium-temperature evaporator and the mixed evaporator are also respectively provided with the heat medium channel which is communicated with the external part, the expander is connected with the compressor and transmits power, the fourth expander is connected with the second compressor and transmits power, and the expander.
7. The multiple combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander and a combustion chamber; the condenser is provided with a condensate pipeline which is communicated with the mixed evaporator through a circulating pump, the expander is provided with a steam channel which is communicated with the mixed evaporator through a medium temperature evaporator, the mixed evaporator is also provided with a steam channel which is respectively communicated with the compressor and the third expander, the compressor is also provided with a steam channel which is communicated with the expander through a high temperature heat exchanger, and the third expander is also provided with a steam channel which is communicated with the condenser; the condenser is also provided with a condensate pipeline which is communicated with the medium temperature evaporator through a second circulating pump, then the medium temperature evaporator is provided with a steam channel which is communicated with a second expander, and the second expander is also provided with a steam channel which is communicated with the condenser; the external part is provided with an air channel communicated with a second compressor, the second compressor is also provided with an air channel communicated with a combustion chamber, the external part is also provided with a fuel channel communicated with the combustion chamber, the combustion chamber is also provided with a fuel gas channel communicated with a fourth expander, the fourth expander is also provided with a fuel gas channel communicated with the external part through a high-temperature heat exchanger, a condenser is also provided with a cooling medium channel communicated with the external part, the expander is connected with the compressor and transmits power, the fourth expander is connected with the second compressor and transmits power, and the expander, the second expander, the third expander and the fourth expander are connected with the external part and output power, so that the multiple combined cycle power device is formed.
8. The multiple combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander and a combustion chamber; the condenser is provided with a condensate pipeline which is communicated with the mixed evaporator through a circulating pump, the expander is provided with a steam channel which is communicated with the mixed evaporator through a medium temperature evaporator, the mixed evaporator is also provided with a steam channel which is respectively communicated with the compressor and the third expander, the compressor is also provided with a steam channel which is communicated with the expander through a high temperature heat exchanger, and the third expander is also provided with a steam channel which is communicated with the condenser; the condenser is also provided with a condensate pipeline which is communicated with the medium temperature evaporator through a second circulating pump, then the medium temperature evaporator is provided with a steam channel which is communicated with a second expander, and the second expander is also provided with a steam channel which is communicated with the condenser; the external part is provided with an air channel communicated with the second compressor, the second compressor is also provided with an air channel communicated with the combustion chamber, the external part is also provided with a fuel channel communicated with the combustion chamber, the combustion chamber is also provided with a fuel gas channel communicated with a fourth expander, the fourth expander is also provided with a fuel gas channel communicated with the external part through a high-temperature heat exchanger, the condenser is also provided with a cooling medium channel communicated with the external part, the medium-temperature evaporator or the mixed evaporator is also provided with a heat medium channel communicated with the external part, the expander is connected with the compressor and transmits power, the fourth expander is connected with the second compressor and transmits power, and the expander, the second expander, the third expander and the fourth expander are connected with the external part and output power, so that the multiple combined cycle power.
9. The multiple combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander and a combustion chamber; the condenser is provided with a condensate pipeline which is communicated with the mixed evaporator through a circulating pump, the expander is provided with a steam channel which is communicated with the mixed evaporator through a medium temperature evaporator, the mixed evaporator is also provided with a steam channel which is respectively communicated with the compressor and the third expander, the compressor is also provided with a steam channel which is communicated with the expander through a high temperature heat exchanger, and the third expander is also provided with a steam channel which is communicated with the condenser; the condenser is also provided with a condensate pipeline which is communicated with the medium temperature evaporator through a second circulating pump, then the medium temperature evaporator is provided with a steam channel which is communicated with a second expander, and the second expander is also provided with a steam channel which is communicated with the condenser; the external part is provided with an air channel communicated with the second compressor, the second compressor is also provided with an air channel communicated with the combustion chamber, the external part is also provided with a fuel channel communicated with the combustion chamber, the combustion chamber is also provided with a fuel gas channel communicated with a fourth expander, the fourth expander is also provided with a fuel gas channel communicated with the external part through a high-temperature heat exchanger, the condenser is also provided with a cooling medium channel communicated with the external part, the medium-temperature evaporator and the mixed evaporator are also respectively provided with a heat medium channel communicated with the external part, the expander is connected with the compressor and transmits power, the fourth expander is connected with the second compressor and transmits power, the expander, the second expander, the third expander and the fourth expander are connected with the external part and outputs power, and the multiple combined cycle power device is formed.
10. The multiple combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander, a combustion chamber and a high-temperature heat regenerator; the condenser is provided with a condensate pipeline which is communicated with the mixed evaporator through a circulating pump, the expander is provided with a steam channel which is communicated with the mixed evaporator through a medium temperature evaporator, the mixed evaporator is also provided with a steam channel which is respectively communicated with the compressor and the third expander, the compressor is also provided with a steam channel which is communicated with the expander through a high temperature heat exchanger, and the third expander is also provided with a steam channel which is communicated with the condenser; the condenser is also provided with a condensate pipeline which is communicated with the medium temperature evaporator through a second circulating pump, then the medium temperature evaporator is provided with a steam channel which is communicated with a second expander, and the second expander is also provided with a steam channel which is communicated with the condenser; the external part is provided with an air channel communicated with the second compressor, the second compressor is also provided with an air channel communicated with the combustion chamber through a high-temperature heat regenerator, the external part is also provided with a fuel channel communicated with the combustion chamber, the combustion chamber is also provided with a fuel gas channel communicated with a fourth expander, the fourth expander is also provided with a fuel gas channel communicated with the external part through the high-temperature heat regenerator and a high-temperature heat exchanger, the condenser is also provided with a cooling medium channel communicated with the external part, the expander is connected with the compressor and transmits power, the fourth expander is connected with the second compressor and transmits power, and the expander, the second expander, the third expander and the fourth expander are connected with the external part and output power to form a multiple combined cycle power device.
11. The multiple combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander, a combustion chamber and a high-temperature heat regenerator; the condenser is provided with a condensate pipeline which is communicated with the mixed evaporator through a circulating pump, the expander is provided with a steam channel which is communicated with the mixed evaporator through a medium temperature evaporator, the mixed evaporator is also provided with a steam channel which is respectively communicated with the compressor and the third expander, the compressor is also provided with a steam channel which is communicated with the expander through a high temperature heat exchanger, and the third expander is also provided with a steam channel which is communicated with the condenser; the condenser is also provided with a condensate pipeline which is communicated with the medium temperature evaporator through a second circulating pump, then the medium temperature evaporator is provided with a steam channel which is communicated with a second expander, and the second expander is also provided with a steam channel which is communicated with the condenser; the external part is provided with an air channel communicated with a second compressor, the second compressor is also provided with an air channel communicated with a combustion chamber through a high-temperature heat regenerator, the external part is also provided with a fuel channel communicated with the combustion chamber, the combustion chamber is also provided with a fuel gas channel communicated with a fourth expander, the fourth expander is also provided with a fuel gas channel communicated with the external part through the high-temperature heat regenerator and a high-temperature heat exchanger, the condenser is also provided with a cooling medium channel communicated with the external part, the medium-temperature evaporator or the mixed evaporator is also provided with a heat medium channel communicated with the external part, the expander is connected with the compressor and transmits power, the fourth expander is connected with the second compressor and transmits power, and the expander, the second expander, the third expander and the fourth expander are connected with the external part and outputs power, so.
12. The multiple combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander, a combustion chamber and a high-temperature heat regenerator; the condenser is provided with a condensate pipeline which is communicated with the mixed evaporator through a circulating pump, the expander is provided with a steam channel which is communicated with the mixed evaporator through a medium temperature evaporator, the mixed evaporator is also provided with a steam channel which is respectively communicated with the compressor and the third expander, the compressor is also provided with a steam channel which is communicated with the expander through a high temperature heat exchanger, and the third expander is also provided with a steam channel which is communicated with the condenser; the condenser is also provided with a condensate pipeline which is communicated with the medium temperature evaporator through a second circulating pump, then the medium temperature evaporator is provided with a steam channel which is communicated with a second expander, and the second expander is also provided with a steam channel which is communicated with the condenser; the external part is provided with an air channel communicated with a second compressor, the second compressor is also provided with an air channel communicated with a combustion chamber through a high-temperature heat regenerator, the external part is also provided with a fuel channel communicated with the combustion chamber, the combustion chamber is also provided with a fuel gas channel communicated with a fourth expander, the fourth expander is also provided with a fuel gas channel communicated with the external part through the high-temperature heat regenerator and a high-temperature heat exchanger, the condenser is also provided with a cooling medium channel communicated with the external part, the medium-temperature evaporator and the mixed evaporator are also respectively provided with a heat medium channel communicated with the external part, the expander is connected with the compressor and transmits power, the fourth expander is connected with the second compressor and transmits power, and the expander, the second expander, the third expander and the fourth expander are connected with the external part and outputs power to form a.
13. The multiple combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander, a combustion chamber and a third compressor; the condenser is provided with a condensate pipeline which is communicated with the mixed evaporator through a circulating pump, the expander is provided with a steam channel which is communicated with the mixed evaporator through a medium temperature evaporator, the mixed evaporator is also provided with a steam channel which is respectively communicated with the compressor and the third expander, the compressor is also provided with a steam channel which is communicated with the expander through a high temperature heat exchanger, and the third expander is also provided with a steam channel which is communicated with the condenser; the condenser is also provided with a condensate pipeline which is communicated with the medium temperature evaporator through a second circulating pump, then the medium temperature evaporator is provided with a steam channel which is communicated with a second expander, and the second expander is also provided with a steam channel which is communicated with the condenser; the external part is provided with an air channel communicated with a second compressor, the second compressor is also provided with an air channel communicated with a combustion chamber, the external part is also provided with a gaseous fuel channel communicated with the combustion chamber through a third compressor, the combustion chamber is also provided with a fuel gas channel communicated with a fourth expander, the fourth expander is also provided with a fuel gas channel communicated with the external part through a high-temperature heat exchanger, the condenser is also provided with a cooling medium channel communicated with the external part, the expander is connected with the compressor and transmits power, the fourth expander is connected with the second compressor and the third compressor and transmits power, and the expander, the second expander, the third expander and the fourth expander are connected with the external part and outputs power to form a multiple combined cycle power device.
14. The multiple combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander, a combustion chamber and a third compressor; the condenser is provided with a condensate pipeline which is communicated with the mixed evaporator through a circulating pump, the expander is provided with a steam channel which is communicated with the mixed evaporator through a medium temperature evaporator, the mixed evaporator is also provided with a steam channel which is respectively communicated with the compressor and the third expander, the compressor is also provided with a steam channel which is communicated with the expander through a high temperature heat exchanger, and the third expander is also provided with a steam channel which is communicated with the condenser; the condenser is also provided with a condensate pipeline which is communicated with the medium temperature evaporator through a second circulating pump, then the medium temperature evaporator is provided with a steam channel which is communicated with a second expander, and the second expander is also provided with a steam channel which is communicated with the condenser; the external part is provided with an air channel communicated with a second compressor, the second compressor is also provided with an air channel communicated with a combustion chamber, the external part is also provided with a gaseous fuel channel communicated with the combustion chamber through a third compressor, the combustion chamber is also provided with a fuel gas channel communicated with a fourth expander, the fourth expander is also provided with a fuel gas channel communicated with the external part through a high-temperature heat exchanger, a condenser is also provided with a cooling medium channel communicated with the external part, a medium-temperature evaporator or a mixed evaporator is also provided with a heat medium channel communicated with the external part, the expander is connected with the compressor and transmits power, the fourth expander is connected with the second compressor and the third compressor and transmits power, and the expander, the second expander, the third expander and the fourth expander are connected with the external part and output power to form a multiple combined cycle power device.
15. The multiple combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander, a combustion chamber and a third compressor; the condenser is provided with a condensate pipeline which is communicated with the mixed evaporator through a circulating pump, the expander is provided with a steam channel which is communicated with the mixed evaporator through a medium temperature evaporator, the mixed evaporator is also provided with a steam channel which is respectively communicated with the compressor and the third expander, the compressor is also provided with a steam channel which is communicated with the expander through a high temperature heat exchanger, and the third expander is also provided with a steam channel which is communicated with the condenser; the condenser is also provided with a condensate pipeline which is communicated with the medium temperature evaporator through a second circulating pump, then the medium temperature evaporator is provided with a steam channel which is communicated with a second expander, and the second expander is also provided with a steam channel which is communicated with the condenser; the external part is provided with an air channel communicated with a second compressor, the second compressor is also provided with an air channel communicated with a combustion chamber, the external part is also provided with a gaseous fuel channel communicated with the combustion chamber through a third compressor, the combustion chamber is also provided with a fuel gas channel communicated with a fourth expander, the fourth expander is also provided with a fuel gas channel communicated with the external part through a high-temperature heat exchanger, a condenser is also provided with a cooling medium channel communicated with the external part, a medium-temperature evaporator and a mixed evaporator are also respectively provided with a heat medium channel communicated with the external part, the expander is connected with the compressor and transmits power, the fourth expander is connected with the second compressor and the third compressor and transmits power, and the expander, the second expander, the third expander and the fourth expander are connected with the external part and output power, so that the multiple combined cycle power device is.
16. The multiple combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander, a combustion chamber, a third compressor and a high-temperature heat regenerator; the condenser is provided with a condensate pipeline which is communicated with the mixed evaporator through a circulating pump, the expander is provided with a steam channel which is communicated with the mixed evaporator through a medium temperature evaporator, the mixed evaporator is also provided with a steam channel which is respectively communicated with the compressor and the third expander, the compressor is also provided with a steam channel which is communicated with the expander through a high temperature heat exchanger, and the third expander is also provided with a steam channel which is communicated with the condenser; the condenser is also provided with a condensate pipeline which is communicated with the medium temperature evaporator through a second circulating pump, then the medium temperature evaporator is provided with a steam channel which is communicated with a second expander, and the second expander is also provided with a steam channel which is communicated with the condenser; the external part is provided with an air channel communicated with the second compressor, the second compressor is also provided with an air channel communicated with the combustion chamber through a high-temperature heat regenerator, the external part is also provided with a gaseous fuel channel communicated with the combustion chamber through a third compressor and the high-temperature heat regenerator, the combustion chamber is also provided with a gas channel communicated with a fourth expander, the fourth expander is also provided with a gas channel communicated with the external part through the high-temperature heat regenerator and a high-temperature heat exchanger, the condenser is also provided with a cooling medium channel communicated with the external part, the expander is connected with the compressor and transmits power, the fourth expander is connected with the second compressor and the third compressor and transmits power, and the expander, the second expander, the third expander and the fourth expander are connected with the external part and output power to form a multiple combined cycle power device.
17. The multiple combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander, a combustion chamber, a third compressor and a high-temperature heat regenerator; the condenser is provided with a condensate pipeline which is communicated with the mixed evaporator through a circulating pump, the expander is provided with a steam channel which is communicated with the mixed evaporator through a medium temperature evaporator, the mixed evaporator is also provided with a steam channel which is respectively communicated with the compressor and the third expander, the compressor is also provided with a steam channel which is communicated with the expander through a high temperature heat exchanger, and the third expander is also provided with a steam channel which is communicated with the condenser; the condenser is also provided with a condensate pipeline which is communicated with the medium temperature evaporator through a second circulating pump, then the medium temperature evaporator is provided with a steam channel which is communicated with a second expander, and the second expander is also provided with a steam channel which is communicated with the condenser; the external part of the expansion machine is provided with an air channel communicated with a second compressor, the second compressor is also provided with an air channel communicated with a combustion chamber through a high-temperature heat regenerator, the external part of the expansion machine is also provided with a gaseous fuel channel communicated with the combustion chamber through a third compressor and the high-temperature heat regenerator, the combustion chamber is also provided with a gas channel communicated with a fourth expansion machine, the fourth expansion machine is also provided with a gas channel communicated with the external part through the high-temperature heat regenerator and a high-temperature heat exchanger, the condenser is also provided with a cooling medium channel communicated with the external part, a medium-temperature evaporator or a mixed evaporator is also provided with a heat medium channel communicated with the external part, the expansion machine is connected with the compressor and transmits power, the fourth expansion machine is connected with the second compressor and the third compressor and transmits power, and the expansion machine, the second expansion machine, the third expansion machine.
18. The multiple combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander, a combustion chamber, a third compressor and a high-temperature heat regenerator; the condenser is provided with a condensate pipeline which is communicated with the mixed evaporator through a circulating pump, the expander is provided with a steam channel which is communicated with the mixed evaporator through a medium temperature evaporator, the mixed evaporator is also provided with a steam channel which is respectively communicated with the compressor and the third expander, the compressor is also provided with a steam channel which is communicated with the expander through a high temperature heat exchanger, and the third expander is also provided with a steam channel which is communicated with the condenser; the condenser is also provided with a condensate pipeline which is communicated with the medium temperature evaporator through a second circulating pump, then the medium temperature evaporator is provided with a steam channel which is communicated with a second expander, and the second expander is also provided with a steam channel which is communicated with the condenser; the external part of the compressor is provided with an air channel communicated with the second compressor, the second compressor is also provided with an air channel communicated with a combustion chamber through a high-temperature heat regenerator, the external part of the compressor is also provided with a gaseous fuel channel communicated with the combustion chamber through a third compressor and the high-temperature heat regenerator, the combustion chamber is also provided with a gas channel communicated with a fourth expander, the fourth expander is also provided with a gas channel communicated with the external part through the high-temperature heat regenerator and a high-temperature heat exchanger, the condenser is also provided with a cooling medium channel communicated with the external part, the medium-temperature evaporator and the mixed evaporator are also respectively provided with a heat medium channel communicated with the external part, the expander is connected with the compressor and transmits power, the fourth expander is connected with the second compressor and the third compressor and transmits power, and the expander, the second expander, the third expander and the fourth expander are connected with the external part.
19. A multiple combined cycle power device is characterized in that a low-temperature heat regenerator is added in any one of the multiple combined cycle power devices 1-18, a steam channel of a compressor is communicated with an expander through a high-temperature heat exchanger and is adjusted to be communicated with the compressor through the low-temperature heat regenerator and the high-temperature heat exchanger, a steam channel of the expander is communicated with a mixed evaporator through a medium-temperature evaporator and is adjusted to be communicated with the mixed evaporator through the low-temperature heat regenerator and the medium-temperature evaporator, and the multiple combined cycle power device is formed.
20. A multi-combined cycle power plant, which is characterized in that in any one of the multi-combined cycle power plants 1 to 3, a newly-added compressor and a newly-added high-temperature heat exchanger are added, a steam channel of the compressor is communicated with an expander through the high-temperature heat exchanger to adjust that the compressor has the steam channel to be communicated with the newly-added compressor through the high-temperature heat exchanger, the newly-added compressor has the steam channel to be communicated with the expander through the newly-added high-temperature heat exchanger, a working medium channel of a fourth expander is communicated with the outside through the high-temperature heat exchanger to adjust that the fourth expander has the working medium channel to be communicated with the outside through the newly-added high-temperature heat exchanger and the high-temperature heat exchanger, the newly-added high-temperature heat exchanger or a heat source medium channel is communicated with the outside, and.
21. A multiple combined cycle power plant, in any one of the multiple combined cycle power plants of items 4-6, the newly-added compressor and the newly-added high-temperature heat exchanger are added, the compressor is communicated with the expander through the high-temperature heat exchanger to adjust the compressor is communicated with the newly-added compressor through the steam channel, the newly-added compressor is communicated with the expander through the newly-added high-temperature heat exchanger, the fourth expander is communicated with the outside through the high-temperature heat regenerator and the high-temperature heat exchanger to adjust the fourth expander is communicated with the outside through the working medium channel, the newly-added high-temperature heat exchanger or the heat source medium channel, and the expander is connected with the newly-added compressor and transmits power to form the multiple combined cycle power device.
22. A multiple combined cycle power plant, which is characterized in that a newly-added compressor and a newly-added high-temperature heat exchanger are added in any multiple combined cycle power plant of the items 7-9 and 13-15, a steam channel of the compressor is communicated with an expander through the high-temperature heat exchanger and is adjusted to be communicated with the newly-added compressor through the steam channel of the compressor, a steam channel of the newly-added compressor is communicated with the expander through the newly-added high-temperature heat exchanger, a gas channel of a fourth expander is communicated with the outside through the high-temperature heat exchanger and is adjusted to be communicated with the outside through the gas channel of the fourth expander, the gas channel of the fourth expander is communicated with the outside through the newly-added high-temperature heat exchanger and the high-temperature heat exchanger, and the expander is connected.
23. A multiple combined cycle power device is characterized in that a newly-added compressor and a newly-added high-temperature heat exchanger are added in any multiple combined cycle power device of 10 th to 12 th and 16 th to 18 th, a steam channel of the compressor is communicated with an expander through the high-temperature heat exchanger to adjust that the compressor is communicated with the newly-added compressor through the steam channel of the compressor, the newly-added compressor is communicated with the expander through the newly-added high-temperature heat exchanger, a gas channel of a fourth expander is communicated with the outside through a high-temperature heat regenerator and the high-temperature heat exchanger to adjust that the fourth expander is communicated with the outside through the gas channel of the fourth expander through the high-temperature heat regenerator, the newly-added high-temperature heat exchanger and the high-temperature heat exchanger, and the expander is connected with the newly-added compressor and transmits.
24. A multi-combined cycle power plant, wherein a new expansion machine and a new high temperature heat exchanger are added in any one of the multi-combined cycle power plants 1-3, a steam channel of a compressor is communicated with the expansion machine through the high temperature heat exchanger and is adjusted to be communicated with the compressor through the steam channel of the compressor and is communicated with the new expansion machine through the high temperature heat exchanger, the steam channel of the new expansion machine is communicated with the expansion machine through the new high temperature heat exchanger, a working medium channel of a fourth expansion machine is communicated with the outside through the high temperature heat exchanger and is adjusted to be communicated with the outside through the working medium channel of the fourth expansion machine, the new high temperature heat exchanger or the heat source medium channel is communicated with the outside, and the new expansion machine is connected with the compressor and transmits power to form the multi-combined cycle power plant.
25. A multiple combined cycle power plant, in any one of the multiple combined cycle power plants of items 4-6, the new expansion machine and the new high temperature heat exchanger are added, the communication between the compressor and the expansion machine through the high temperature heat exchanger is adjusted to that the compressor has a steam channel which is communicated with the new expansion machine through the high temperature heat exchanger, the new expansion machine has a steam channel which is communicated with the expansion machine through the new high temperature heat exchanger, the communication between the fourth expansion machine and the outside through the high temperature heat regenerator and the high temperature heat exchanger is adjusted to that the fourth expansion machine has a working medium channel which is communicated with the outside through the high temperature heat regenerator, the new high temperature heat exchanger and the high temperature heat exchanger, the new high temperature heat exchanger or the heat source medium channel is communicated with the outside, and the new expansion machine is connected with the compressor and transmits power, thus forming the multiple combined cycle power device.
26. A multiple combined cycle power plant, wherein a new expansion machine and a new high temperature heat exchanger are added in any multiple combined cycle power plant of items 7-9 and 13-15, a steam channel of a compressor is communicated with the expansion machine through the high temperature heat exchanger and is adjusted to be a steam channel of the compressor is communicated with the new expansion machine through the high temperature heat exchanger, a steam channel of the new expansion machine is communicated with the expansion machine through the new high temperature heat exchanger, a gas channel of a fourth expansion machine is communicated with the outside through the high temperature heat exchanger and is adjusted to be a gas channel of the fourth expansion machine is communicated with the outside through the new high temperature heat exchanger and the high temperature heat exchanger, and the new expansion machine is connected with the compressor and transmits power, so that the multiple combined cycle power plant is formed.
27. A multiple combined cycle power device is characterized in that a new expansion machine and a new high-temperature heat exchanger are added in any multiple combined cycle power device of 10 th to 12 th and 16 th to 18 th, a steam channel of a compressor is communicated with the expansion machine through the high-temperature heat exchanger and is adjusted to be communicated with the new expansion machine through the steam channel of the compressor, the steam channel of the new expansion machine is communicated with the expansion machine through the new high-temperature heat exchanger, a gas channel of a fourth expansion machine is communicated with the outside through a high-temperature heat regenerator and the high-temperature heat exchanger and is adjusted to be communicated with the outside through the gas channel of the fourth expansion machine, the new expansion machine is connected with the compressor and transmits power, and the multiple combined cycle power device is formed.
28. A multiple combined cycle power device is characterized in that a low-temperature heat regenerator is added in any one of the multiple combined cycle power devices 20-23, a steam channel of a compressor is communicated with a newly-added compressor through a high-temperature heat exchanger and is adjusted to be communicated with the newly-added compressor through the low-temperature heat regenerator and the high-temperature heat exchanger, a steam channel of an expander is communicated with a mixed evaporator through a medium-temperature evaporator and is adjusted to be communicated with the mixed evaporator through the low-temperature heat regenerator and the medium-temperature evaporator, and the multiple combined cycle power device is formed.
29. A multiple combined cycle power device is characterized in that a low-temperature heat regenerator is added in any one of the multiple combined cycle power devices 24-27, a steam channel of a compressor is communicated with a new expansion machine through a high-temperature heat exchanger and is adjusted to be communicated with the new expansion machine through the low-temperature heat regenerator and the high-temperature heat exchanger, a steam channel of the expansion machine is communicated with a mixed evaporator through a medium-temperature evaporator and is adjusted to be communicated with the mixed evaporator through the low-temperature heat regenerator and the medium-temperature evaporator, and the multiple combined cycle power device is formed.
30. A multiple combined circulation power device is characterized in that a third circulating pump, a fourth circulating pump, a heat regenerator and a second heat regenerator are added in any one of the multiple combined circulation power devices 1-29, a condenser with a condensate pipeline is communicated with a mixed evaporator through the circulating pump and adjusted to be communicated with the heat regenerator through the condenser with the condensate pipeline through the circulating pump, the middle temperature evaporator is communicated with a second expander through a steam channel after the condenser with the condensate pipeline is communicated with the middle temperature evaporator through the second circulating pump and adjusted to be communicated with the second expander through the condensate pipeline through the second circulating pump, a steam extraction channel is additionally arranged on the third expander and communicated with the heat regenerator, a condensate pipeline is also communicated with the mixed evaporator through the third circulating pump, a steam channel is additionally arranged on the middle temperature evaporator and communicated with the second expander through the condensate pipeline after the condensate pipeline is communicated with the middle temperature evaporator through the fourth circulating pump Forming a multiple combined cycle power plant.
31. A multi-combined cycle power plant, which is characterized in that a preheater and a second preheater are added in any one of the multi-combined cycle power plants 1-29, a condenser with a condensate pipeline communicated with a mixed evaporator through a circulating pump is adjusted to be communicated with the mixed evaporator through the circulating pump and the preheater, a medium temperature evaporator is communicated with a second expander after the condenser with the condensate pipeline communicated with the medium temperature evaporator through the second circulating pump, the condenser is adjusted to be communicated with the medium temperature evaporator through the condensate pipeline communicated with the medium temperature evaporator through the second circulating pump and the second preheater, a medium temperature evaporator is communicated with the second expander through the steam channel, and the preheater and the second preheater are respectively communicated with the outside through a heat medium channel to form the multi-combined cycle power plant.
32. A multi-combined cycle power plant, wherein in any one of the multi-combined cycle power plants described in item 31, a condenser with a condensate pipeline is communicated with a mixed evaporator through a circulating pump and a preheater, and the condenser with the condensate pipeline is communicated with a medium temperature evaporator through a second circulating pump and a second preheater, and the condenser is adjusted to be divided into two paths after the condensate pipeline passes through the circulating pump and the preheater, wherein the first path is directly communicated with the mixed evaporator, and the second path is communicated with the medium temperature evaporator through the second circulating pump and the second preheater, so that the multi-combined cycle power plant is formed.
33. A multi-combined cycle power plant, wherein in any one of the multi-combined cycle power plants 1-32, an intermediate reheater is added, a medium temperature evaporator is provided with a steam passage communicated with a second expander and a second expander is provided with a steam passage communicated with a condenser, the medium temperature evaporator is provided with a steam passage communicated with the second expander, the second expander is also provided with an intermediate reheater steam passage communicated with the second expander through the intermediate reheater and the second expander is also provided with a steam passage communicated with the condenser, and the intermediate reheater is also provided with a heat medium passage communicated with the outside, so as to form the multi-combined cycle power plant.
34. A multiple combined cycle power plant, wherein in any one of the multiple combined cycle power plants 1-29, a second condenser is added, a second expander is communicated with the condenser through a steam channel, the second expander is communicated with the second condenser through a steam channel, the condenser is communicated with a medium temperature evaporator through a second circulating pump through a condensate pipeline, the second condenser is communicated with the medium temperature evaporator through the second circulating pump through a condensate pipeline, and the second condenser is also communicated with the outside through a cooling medium channel, so that the multiple combined cycle power plant is formed.
35. A multiple combined cycle power plant, wherein a fifth expander, a newly-added intermediate temperature evaporator and a newly-added circulating pump are added in any one of the multiple combined cycle power plants of items 1-34, a condensate pipeline is additionally arranged on a condenser and is communicated with the newly-added intermediate temperature evaporator through the newly-added circulating pump, then the newly-added intermediate temperature evaporator is communicated with the fifth expander through a steam channel, the fifth expander is also communicated with the condenser through a steam channel, the expander is communicated with a mixed evaporator through the intermediate temperature evaporator and is adjusted to be communicated with the mixed evaporator through the steam channel of the expander, the steam channel of the expander is communicated with the mixed evaporator through the newly-added intermediate temperature evaporator and the intermediate temperature evaporator, the newly-added intermediate temperature evaporator or a heat medium channel is communicated with the outside, and the fifth expander is connected with the outside and outputs power to form the multiple.
36. A multiple combined cycle power plant, in any of the multiple combined cycle power plants of items 1-34, a fifth expander, a newly-added intermediate-temperature evaporator, a newly-added circulating pump and a newly-added preheater are added, a condensate pipeline is additionally arranged on a condenser and is communicated with the newly-added intermediate-temperature evaporator through the newly-added circulating pump and the newly-added preheater, then the newly-added intermediate-temperature evaporator is communicated with the fifth expander through a steam channel, the fifth expander is also communicated with the condenser through a steam channel, the expander is communicated with a mixed evaporator through the intermediate-temperature evaporator and adjusted to be communicated with the mixed evaporator through the steam channel, the newly-added preheater is also communicated with the outside through a heat medium channel, the newly-added intermediate-temperature evaporator or the heat medium channel is communicated with the outside, and the fifth expander is connected with the outside and outputs power to form a multi-combined cycle power device.
Description of the drawings:
FIG. 1 is a schematic 1 st principal thermodynamic system diagram of a multiple combined cycle power plant according to the present invention.
FIG. 2 is a schematic thermodynamic system diagram of the 2 nd principle of a multiple combined cycle power plant according to the present invention.
FIG. 3 is a schematic thermodynamic system diagram of the 3 rd embodiment of a multiple combined cycle power plant according to the present invention.
FIG. 4 is a diagram of a 4 th principal thermodynamic system of a multiple combined cycle power plant according to the present invention.
FIG. 5 is a diagram of a 5 th principal thermodynamic system of a multiple combined cycle power plant according to the present invention.
FIG. 6 is a schematic 6 th principal thermodynamic system diagram of a multiple combined cycle power plant according to the present invention.
FIG. 7 is a 7 th principal thermodynamic system diagram of a multiple combined cycle power plant provided in accordance with the present invention.
FIG. 8 is a diagram of an 8 th principle thermodynamic system of a multiple combined cycle power plant according to the present invention.
FIG. 9 is a diagram of a 9 th principal thermodynamic system of a multiple combined cycle power plant according to the present invention.
FIG. 10 is a 10 th principal thermodynamic system diagram of a multiple combined cycle power plant provided in accordance with the present invention.
FIG. 11 is a schematic 11 th principal thermodynamic system diagram of a multiple combined cycle power plant according to the present invention.
FIG. 12 is a 12 th principal thermodynamic system diagram of a multiple combined cycle power plant provided in accordance with the present invention.
FIG. 13 is a schematic 13 th principal thermodynamic system diagram of a multiple combined cycle power plant provided in accordance with the present invention.
FIG. 14 is a 14 th principal thermodynamic system diagram of a multiple combined cycle power plant provided in accordance with the present invention.
FIG. 15 is a diagram of a 15 th principal thermodynamic system of a multiple combined cycle power plant provided in accordance with the present invention.
FIG. 16 is a 16 th principal thermodynamic system diagram of a multiple combined cycle power plant provided in accordance with the present invention.
FIG. 17 is a diagram of a 17 th principal thermodynamic system of a multiple combined cycle power plant provided in accordance with the present invention.
In the figure, 1-compressor, 2-expander, 3-second expander, 4-third expander, 5-circulating pump, 6-second circulating pump, 7-high temperature heat exchanger, 8-condenser, 9-hybrid evaporator, 10-medium temperature evaporator, 11-second compressor, 12-fourth expander, 13-second high temperature heat exchanger, 14-high temperature regenerator, 15-combustion chamber, 16-third compressor, 17-low temperature regenerator, 18-third circulating pump, 19-fourth circulating pump, 20-regenerator, 21-second regenerator, 22-preheater, 23-second preheater, 24-intermediate reheater, 25-second condenser, 26-fifth expander; a-a newly-added compressor, B-a newly-added high-temperature heat exchanger, C-a newly-added expansion machine, D-a newly-added medium-temperature evaporator, E-a newly-added circulating pump and F-a newly-added preheater.
The specific implementation mode is as follows:
it is to be noted that, in the description of the structure and the flow, the repetition is not necessary; obvious flow is not described. The invention is described in detail below with reference to the figures and examples.
The multiple combined cycle power plant of FIG. 1 is implemented as follows:
(1) structurally, the system mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander and a second high-temperature heat exchanger; the condenser 8 is provided with a condensate pipeline which is communicated with a mixed evaporator 9 through a circulating pump 5, the expander 2 is provided with a steam channel which is communicated with the mixed evaporator 9 through a medium temperature evaporator 10, the mixed evaporator 9 and the steam channel are respectively communicated with the compressor 1 and the third expander 4, the compressor 1 and the steam channel are communicated with the expander 2 through a high temperature heat exchanger 7, and the third expander 4 and the steam channel are communicated with the condenser 8; the condenser 8 is also provided with a condensate pipeline which is communicated with the medium temperature evaporator 10 through a second circulating pump 6, then the medium temperature evaporator 10 is provided with a steam channel which is communicated with the second expander 3, and the second expander 3 is also provided with a steam channel which is communicated with the condenser 8; the external part is provided with a working medium channel which is communicated with the second compressor 11, the second compressor 11 is also provided with a working medium channel which is communicated with the fourth expander 12 through a second high-temperature heat exchanger 13, the fourth expander 12 is also provided with a working medium channel which is communicated with the external part through a high-temperature heat exchanger 7, the second high-temperature heat exchanger 13 is also provided with a heat source medium channel which is communicated with the external part, the condenser 8 is also provided with a cooling medium channel which is communicated with the external part, the expander 2 is connected with the compressor 1 and transmits power, the fourth expander 12 is connected with the second compressor 11 and transmits power, and the expander 2, the second expander 3, the third expander 4 and the fourth expander 12 are connected with the external part and output power.
(2) In the process, steam discharged by the compressor 1 flows through the high-temperature heat exchanger 7 and absorbs heat, flows through the expander 2 and performs decompression work, flows through the medium-temperature evaporator 10 and releases heat and cools, and then enters the mixing evaporator 7 to be mixed with condensate from the condenser 8 and releases heat and cools; the condensate of the condenser 8 is divided into two paths, wherein the first path is pressurized by the circulating pump 5 and enters the mixing evaporator 7 to absorb heat and vaporize, and the second path is pressurized by the second circulating pump 6 and enters the medium temperature evaporator 10 to absorb heat and vaporize; the steam released by the mixed evaporator 7 enters the compressor 1 to increase the pressure and temperature and enters the third expansion machine 4 to reduce the pressure and do work, and the steam discharged by the third expansion machine 4 enters the condenser 8 to release heat and condense; the steam released by the medium temperature evaporator 10 flows through the second expansion machine 3 to reduce the pressure and do work, and then enters the condenser 8 to release heat and condense; the external working medium flows through the second compressor 11 to increase the pressure and the temperature, flows through the second high-temperature heat exchanger 13 to absorb heat, flows through the fourth expander 12 to reduce the pressure and do work, and then flows through the high-temperature heat exchanger 7 to release heat and is discharged to the outside; the heat source medium provides a driving heat load through the second high-temperature heat exchanger 13, the cooling medium takes away a low-temperature heat load through the condenser 8, a part of work output by the expander 2 is provided for the compressor 1 to be used as power, a part of work output by the fourth expander 12 is provided for the second compressor 11 to be used as power, and the expander 2, the second expander 3, the third expander 4 and the fourth expander 12 jointly provide power (driving a working machine or a generator) to the outside to form a multiple combined cycle power device.
The multiple combined cycle power plant of FIG. 2 is implemented as follows:
(1) structurally, the system mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander, a second high-temperature heat exchanger and a high-temperature heat regenerator; the condenser 8 is provided with a condensate pipeline which is communicated with a mixed evaporator 9 through a circulating pump 5, the expander 2 is provided with a steam channel which is communicated with the mixed evaporator 9 through a medium temperature evaporator 10, the mixed evaporator 9 and the steam channel are respectively communicated with the compressor 1 and the third expander 4, the compressor 1 and the steam channel are communicated with the expander 2 through a high temperature heat exchanger 7, and the third expander 4 and the steam channel are communicated with the condenser 8; the condenser 8 is also provided with a condensate pipeline which is communicated with the medium temperature evaporator 10 through a second circulating pump 6, then the medium temperature evaporator 10 is provided with a steam channel which is communicated with the second expander 3, and the second expander 3 is also provided with a steam channel which is communicated with the condenser 8; the external part is provided with a working medium channel which is communicated with the second compressor 11, the second compressor 11 is also provided with a working medium channel which is communicated with the fourth expander 12 through a high-temperature heat regenerator 14 and a second high-temperature heat exchanger 13, the fourth expander 12 is also provided with a working medium channel which is communicated with the external part through the high-temperature heat regenerator 14 and the high-temperature heat exchanger 7, the second high-temperature heat exchanger 13 and the high-temperature heat exchanger 7 are also respectively provided with a heat source medium channel which is communicated with the external part, the condenser 8 is also provided with a cooling medium channel which is communicated with the external part, the expander 2 is connected with the compressor 1 and transmits power, the fourth expander 12 is connected with the second compressor 11 and transmits power, and the expander 2, the second expander 3, the third expander 4 and the fourth expander 12 are connected.
(2) In the process, steam discharged by the compressor 1 flows through the high-temperature heat exchanger 7 and absorbs heat, flows through the expander 2 and performs decompression work, flows through the medium-temperature evaporator 10 and releases heat and cools, and then enters the mixing evaporator 7 to be mixed with condensate from the condenser 8 and releases heat and cools; the condensate of the condenser 8 is divided into two paths, wherein the first path is pressurized by the circulating pump 5 and enters the mixing evaporator 7 to absorb heat and vaporize, and the second path is pressurized by the second circulating pump 6 and enters the medium temperature evaporator 10 to absorb heat and vaporize; the steam released by the mixed evaporator 7 enters the compressor 1 to increase the pressure and temperature and enters the third expansion machine 4 to reduce the pressure and do work, and the steam discharged by the third expansion machine 4 enters the condenser 8 to release heat and condense; the steam released by the medium temperature evaporator 10 flows through the second expansion machine 3 to reduce the pressure and do work, and then enters the condenser 8 to release heat and condense; the external working medium flows through the second compressor 11 to increase the pressure and the temperature, flows through the high-temperature heat regenerator 14 and the second high-temperature heat exchanger 13 to absorb heat gradually, flows through the fourth expander 12 to reduce the pressure and do work, and then flows through the high-temperature heat regenerator 14 and the high-temperature heat exchanger 7 to release heat gradually and discharge the heat outwards; the heat source medium provides a driving heat load through the second high-temperature heat exchanger 13 and the high-temperature heat exchanger 7, the cooling medium takes away a low-temperature heat load through the condenser 8, a part of work output by the expander 2 is provided for the compressor 1 as power, a part of work output by the fourth expander 12 is provided for the second compressor 11 as power, and the expander 2, the second expander 3, the third expander 4 and the fourth expander 12 jointly provide power for the outside to form a multiple combined cycle power device.
The multiple combined cycle power plant shown in FIG. 3 is implemented as follows:
(1) structurally, the system mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander and a combustion chamber; the condenser 8 is provided with a condensate pipeline which is communicated with a mixed evaporator 9 through a circulating pump 5, the expander 2 is provided with a steam channel which is communicated with the mixed evaporator 9 through a medium temperature evaporator 10, the mixed evaporator 9 and the steam channel are respectively communicated with the compressor 1 and the third expander 4, the compressor 1 and the steam channel are communicated with the expander 2 through a high temperature heat exchanger 7, and the third expander 4 and the steam channel are communicated with the condenser 8; the condenser 8 is also provided with a condensate pipeline which is communicated with the medium temperature evaporator 10 through a second circulating pump 6, then the medium temperature evaporator 10 is provided with a steam channel which is communicated with the second expander 3, and the second expander 3 is also provided with a steam channel which is communicated with the condenser 8; an air channel is arranged outside and communicated with the second compressor 11, the second compressor 11 is also provided with an air channel and communicated with a combustion chamber 15, a fuel channel is also arranged outside and communicated with the combustion chamber 15, the combustion chamber 15 is also provided with a fuel channel and communicated with a fourth expander 12, the fourth expander 12 is also provided with a fuel channel and communicated with the outside through a high-temperature heat exchanger 7, a condenser 8 is also provided with a cooling medium channel and communicated with the outside, the expander 2 is connected with the compressor 1 and transmits power, the fourth expander 12 is connected with the second compressor 11 and transmits power, and the expander 2, the second expander 3, the third expander 4 and the fourth expander 12 are connected with the outside and output power.
(2) In the process, steam discharged by the compressor 1 flows through the high-temperature heat exchanger 7 and absorbs heat, flows through the expander 2 and performs decompression work, flows through the medium-temperature evaporator 10 and releases heat and cools, and then enters the mixing evaporator 7 to be mixed with condensate from the condenser 8 and releases heat and cools; the condensate of the condenser 8 is divided into two paths, wherein the first path is pressurized by the circulating pump 5 and enters the mixing evaporator 7 to absorb heat and vaporize, and the second path is pressurized by the second circulating pump 6 and enters the medium temperature evaporator 10 to absorb heat and vaporize; the steam released by the mixed evaporator 7 enters the compressor 1 to increase the pressure and temperature and enters the third expansion machine 4 to reduce the pressure and do work, and the steam discharged by the third expansion machine 4 enters the condenser 8 to release heat and condense; the steam released by the medium temperature evaporator 10 flows through the second expansion machine 3 to reduce the pressure and do work, and then enters the condenser 8 to release heat and condense; the external air flows through the second compressor 11, is subjected to pressure rise and temperature rise and then enters the combustion chamber 15, and the external fuel enters the combustion chamber 15 to be mixed with the air and burnt into high-temperature fuel gas; the fuel gas flows through the fourth expander 12 to reduce the pressure and do work, flows through the high-temperature heat exchanger 7 to release heat, and then is discharged outwards; the fuel provides driving heat load through combustion, the cooling medium takes away low-temperature heat load through the condenser 8, a part of work output by the expansion machine 2 is provided for the compressor 1 to be used as power, a part of work output by the fourth expansion machine 12 is provided for the second compressor 11 to be used as power, and the expansion machine 2, the second expansion machine 3, the third expansion machine 4 and the fourth expansion machine 12 jointly provide power outwards to form a multiple combined cycle power device.
The multiple combined cycle power plant shown in FIG. 4 is implemented as follows:
(1) structurally, the system mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander, a combustion chamber and a high-temperature heat regenerator; the condenser 8 is provided with a condensate pipeline which is communicated with a mixed evaporator 9 through a circulating pump 5, the expander 2 is provided with a steam channel which is communicated with the mixed evaporator 9 through a medium temperature evaporator 10, the mixed evaporator 9 and the steam channel are respectively communicated with the compressor 1 and the third expander 4, the compressor 1 and the steam channel are communicated with the expander 2 through a high temperature heat exchanger 7, and the third expander 4 and the steam channel are communicated with the condenser 8; the condenser 8 is also provided with a condensate pipeline which is communicated with the medium temperature evaporator 10 through a second circulating pump 6, then the medium temperature evaporator 10 is provided with a steam channel which is communicated with the second expander 3, and the second expander 3 is also provided with a steam channel which is communicated with the condenser 8; an air channel is arranged outside and communicated with a second compressor 11, the second compressor 11 is also provided with an air channel which is communicated with a combustion chamber 15 through a high-temperature heat regenerator 14, a fuel channel is also arranged outside and communicated with the combustion chamber 15, the combustion chamber 15 is also provided with a fuel gas channel which is communicated with a fourth expander 12, the fourth expander 12 is also provided with a fuel gas channel which is communicated with the outside through the high-temperature heat regenerator 14 and a high-temperature heat exchanger 7, a condenser 8 is also provided with a cooling medium channel which is communicated with the outside, a medium-temperature evaporator 10 and a mixed evaporator 9 are also provided with a heat medium channel which is communicated with the outside respectively, the expander 2 is connected with the compressor 1 and transmits power, the fourth expander 12 is connected with the second compressor 11 and transmits power, and the expander 2, the second expander 3, the third expander 4 and the fourth expander 12 are connected with the.
(2) In the process, steam discharged by the compressor 1 flows through the high-temperature heat exchanger 7 and absorbs heat, flows through the expander 2 and performs decompression work, flows through the medium-temperature evaporator 10 and releases heat and cools, and then enters the mixing evaporator 7 to be mixed with condensate from the condenser 8 and releases heat and cools; the condensate of the condenser 8 is divided into two paths, wherein the first path is pressurized by the circulating pump 5 and enters the mixing evaporator 7 to absorb heat and vaporize, and the second path is pressurized by the second circulating pump 6 and enters the medium temperature evaporator 10 to absorb heat and vaporize; the steam released by the mixed evaporator 7 enters the compressor 1 to increase the pressure and temperature and enters the third expansion machine 4 to reduce the pressure and do work, and the steam discharged by the third expansion machine 4 enters the condenser 8 to release heat and condense; the steam released by the medium temperature evaporator 10 flows through the second expansion machine 3 to reduce the pressure and do work, and then enters the condenser 8 to release heat and condense; the external air flows through the second compressor 11 to increase the pressure and the temperature, flows through the high-temperature regenerator 14 to absorb heat, and then enters the combustion chamber 15; external fuel enters a combustion chamber 15 to be mixed with air and is combusted into high-temperature fuel gas, the fuel gas flows through a fourth expander 12 to reduce pressure and do work, flows through a high-temperature heat regenerator 14 and a high-temperature heat exchanger 7 to gradually release heat, and then is discharged outwards; the fuel provides driving heat load by combustion, the heat medium-gas flowing through the high temperature heat exchanger 5 or other heat source capable of providing heat load-provides driving heat load by the mixing evaporator 9 and the medium temperature evaporator 10, the cooling medium takes away the low temperature heat load by the condenser 8, a part of work output by the expansion machine 2 is provided for the compressor 1 as power, a part of work output by the fourth expansion machine 12 is provided for the second compressor 11 as power, and the expansion machine 2, the second expansion machine 3, the third expansion machine 4 and the fourth expansion machine 12 jointly provide power for the outside, thus forming the multiple combined cycle power device.
The multiple combined cycle power plant shown in FIG. 5 is implemented as follows:
(1) structurally, the system mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander, a combustion chamber and a third compressor; the condenser 8 is provided with a condensate pipeline which is communicated with a mixed evaporator 9 through a circulating pump 5, the expander 2 is provided with a steam channel which is communicated with the mixed evaporator 9 through a medium temperature evaporator 10, the mixed evaporator 9 and the steam channel are respectively communicated with the compressor 1 and the third expander 4, the compressor 1 and the steam channel are communicated with the expander 2 through a high temperature heat exchanger 7, and the third expander 4 and the steam channel are communicated with the condenser 8; the condenser 8 is also provided with a condensate pipeline which is communicated with the medium temperature evaporator 10 through a second circulating pump 6, then the medium temperature evaporator 10 is provided with a steam channel which is communicated with the second expander 3, and the second expander 3 is also provided with a steam channel which is communicated with the condenser 8; an air channel is arranged outside and communicated with the second compressor 11, the second compressor 11 is also provided with an air channel and communicated with a combustion chamber 15, a gaseous fuel channel is also arranged outside and communicated with the combustion chamber 15 through a third compressor 16, the combustion chamber 15 is also provided with a fuel gas channel and communicated with a fourth expander 12, the fourth expander 12 is also provided with a fuel gas channel and communicated with the outside through a high-temperature heat exchanger 7, a condenser 8 is also provided with a cooling medium channel and communicated with the outside, the expander 2 is connected with the compressor 1 and transmits power, the fourth expander 12 is connected with the second compressor 11 and the third compressor 16 and transmits power, and the expander 2, the second expander 3, the third expander 4 and the fourth expander 12 are connected with the outside and output power.
(2) In the process, steam discharged by the compressor 1 flows through the high-temperature heat exchanger 7 and absorbs heat, flows through the expander 2 and performs decompression work, flows through the medium-temperature evaporator 10 and releases heat and cools, and then enters the mixing evaporator 7 to be mixed with condensate from the condenser 8 and releases heat and cools; the condensate of the condenser 8 is divided into two paths, wherein the first path is pressurized by the circulating pump 5 and enters the mixing evaporator 7 to absorb heat and vaporize, and the second path is pressurized by the second circulating pump 6 and enters the medium temperature evaporator 10 to absorb heat and vaporize; the steam released by the mixed evaporator 7 enters the compressor 1 to increase the pressure and temperature and enters the third expansion machine 4 to reduce the pressure and do work, and the steam discharged by the third expansion machine 4 enters the condenser 8 to release heat and condense; the steam released by the medium temperature evaporator 10 flows through the second expansion machine 3 to reduce the pressure and do work, and then enters the condenser 8 to release heat and condense; the external air enters the combustion chamber 15 after being boosted and heated by flowing through the second compressor 11, the external gaseous fuel enters the combustion chamber 15 after being boosted by flowing through the third compressor 16, is mixed with the air and is combusted into high-temperature fuel gas, the fuel gas flows through the fourth expander 12 to be reduced in pressure and do work, flows through the high-temperature heat exchanger 7 to release heat, and then is discharged outwards; the fuel provides driving heat load through combustion, the cooling medium takes away low-temperature heat load through the condenser 8, a part of work output by the expansion machine 2 is provided for the compressor 1 to be used as power, a part of work output by the fourth expansion machine 12 is provided for the second compressor 11 and the third compressor 16 to be used as power, and the expansion machine 2, the second expansion machine 3, the third expansion machine 4 and the fourth expansion machine 12 jointly provide power for the outside to form a multiple combined cycle power device.
The multiple combined cycle power plant of FIG. 6 is implemented as follows:
(1) structurally, the system mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander, a combustion chamber, a third compressor and a high-temperature heat regenerator; the condenser 8 is provided with a condensate pipeline which is communicated with a mixed evaporator 9 through a circulating pump 5, the expander 2 is provided with a steam channel which is communicated with the mixed evaporator 9 through a medium temperature evaporator 10, the mixed evaporator 9 and the steam channel are respectively communicated with the compressor 1 and the third expander 4, the compressor 1 and the steam channel are communicated with the expander 2 through a high temperature heat exchanger 7, and the third expander 4 and the steam channel are communicated with the condenser 8; the condenser 8 is also provided with a condensate pipeline which is communicated with the medium temperature evaporator 10 through a second circulating pump 6, then the medium temperature evaporator 10 is provided with a steam channel which is communicated with the second expander 3, and the second expander 3 is also provided with a steam channel which is communicated with the condenser 8; an air channel is arranged outside and communicated with a second compressor 11, the second compressor 11 is also provided with an air channel which is communicated with a combustion chamber 15 through a high-temperature heat regenerator 14, a gaseous fuel channel is also arranged outside and communicated with the combustion chamber 15 through a third compressor 16 and the high-temperature heat regenerator 14, the combustion chamber 15 is also provided with a gas channel which is communicated with a fourth expander 12, the fourth expander 12 is also provided with a gas channel which is communicated with the outside through the high-temperature heat regenerator 14 and a high-temperature heat exchanger 7, a condenser 8 is also provided with a cooling medium channel which is communicated with the outside, the expander 2 is connected with the compressor 1 and transmits power, the fourth expander 12 is connected with the second compressor 11 and the third compressor 16 and transmits power, and the expander 2, the second expander 3, the third expander 4 and the fourth expander 12 are connected with the outside and output power.
(2) In the process, steam discharged by the compressor 1 flows through the high-temperature heat exchanger 7 and absorbs heat, flows through the expander 2 and performs decompression work, flows through the medium-temperature evaporator 10 and releases heat and cools, and then enters the mixing evaporator 7 to be mixed with condensate from the condenser 8 and releases heat and cools; the condensate of the condenser 8 is divided into two paths, wherein the first path is pressurized by the circulating pump 5 and enters the mixing evaporator 7 to absorb heat and vaporize, and the second path is pressurized by the second circulating pump 6 and enters the medium temperature evaporator 10 to absorb heat and vaporize; the steam released by the mixed evaporator 7 enters the compressor 1 to increase the pressure and temperature and enters the third expansion machine 4 to reduce the pressure and do work, and the steam discharged by the third expansion machine 4 enters the condenser 8 to release heat and condense; the steam released by the medium temperature evaporator 10 flows through the second expansion machine 3 to reduce the pressure and do work, and then enters the condenser 8 to release heat and condense; the outside air passes through the second compressor 11 to be boosted and heated, passes through the high temperature heat exchanger 11 to absorb heat, and then enters the combustion chamber 15; the external gaseous fuel flows through the third compressor 16, is pressurized, flows through the high temperature regenerator 14, absorbs heat, and then enters the combustion chamber 15; the gas fuel and the air are mixed and burned into high-temperature fuel gas, the fuel gas discharged from the combustion chamber 15 flows through the fourth expander 12 to reduce the pressure and do work, flows through the high-temperature heat regenerator 14 and the high-temperature heat exchanger 7 to gradually release heat, and then is discharged outwards; the fuel provides driving heat load through combustion, the cooling medium takes away low-temperature heat load through the condenser 8, a part of work output by the expansion machine 2 is provided for the compressor 1 to be used as power, a part of work output by the fourth expansion machine 12 is provided for the second compressor 11 and the third compressor 16 to be used as power, and the expansion machine 2, the second expansion machine 3, the third expansion machine 4 and the fourth expansion machine 12 jointly provide power for the outside to form a multiple combined cycle power device.
The multiple combined cycle power plant of FIG. 7 is implemented as follows:
(1) structurally, in the multiple combined cycle power plant shown in fig. 3, a low-temperature heat regenerator is added, a steam channel of the compressor 1 is communicated with the expander 2 through a high-temperature heat exchanger 7 and adjusted to be that the steam channel of the compressor 1 is communicated with the expander 2 through a low-temperature heat regenerator 17 and the high-temperature heat exchanger 7, and a steam channel of the expander 2 is communicated with the mixed evaporator 9 through a medium-temperature evaporator 10 and adjusted to be that the steam channel of the expander 2 is communicated with the mixed evaporator 9 through the low-temperature heat regenerator 17 and the medium-temperature evaporator 10.
(2) Compared with the circulation flow of the multiple combined cycle power plant shown in fig. 3, the difference in the flow is that the steam discharged from the compressor 1 flows through the low-temperature heat regenerator 17 and the high-temperature heat exchanger 7 and gradually absorbs heat, flows through the expander 2 and reduces pressure to do work, flows through the low-temperature heat regenerator 17 and the medium-temperature evaporator 10 and gradually releases heat, and then enters the hybrid evaporator 9 to form the multiple combined cycle power plant.
The multiple combined cycle power plant of FIG. 8 is implemented as follows:
(1) structurally, in the multiple combined cycle power plant shown in fig. 3, a newly added compressor and a newly added high temperature heat exchanger are added, a steam channel of the compressor 1 is communicated with the expander 2 through the high temperature heat exchanger 7 and adjusted to be a steam channel of the compressor 1 which is communicated with the newly added compressor a through the high temperature heat exchanger 7, a steam channel of the newly added compressor a is communicated with the expander 2 through the newly added high temperature heat exchanger B, a gas channel of the fourth expander 12 is communicated with the outside through the high temperature heat exchanger 7 and adjusted to be a gas channel of the fourth expander 12 which is communicated with the outside through the newly added high temperature heat exchanger B and the high temperature heat exchanger 7, and the expander 2 is connected with the newly added compressor a and transmits power.
(2) Compared with the circulation flow of the multiple combined cycle power plant shown in the figure 3, the difference of the flow is that the steam discharged by the compressor 1 flows through the high-temperature heat exchanger 7 and absorbs heat, and then enters the newly-added compressor A to increase the pressure and the temperature; the steam discharged by the newly-added compressor A flows through the newly-added high-temperature heat exchanger B and absorbs heat, and then enters the expander 2 to reduce the pressure and do work; the expander 2 provides power for the added compressor A, and the fuel gas discharged by the fourth expander 12 flows through the added high-temperature heat exchanger B and the high-temperature heat exchanger 7 and gradually releases heat to form a multiple combined cycle power device.
The multiple combined cycle power plant of FIG. 9 is implemented as follows:
(1) structurally, in the multiple combined cycle power plant shown in fig. 3, a new expansion machine and a new high temperature heat exchanger are added, a steam channel of a compressor 1 is communicated with an expansion machine 2 through the high temperature heat exchanger 7 and adjusted to be that the compressor 1 is communicated with a steam channel of the new expansion machine C through the high temperature heat exchanger 7, the steam channel of the new expansion machine C is communicated with the expansion machine 2 through the new high temperature heat exchanger B, a gas channel of a fourth expansion machine 12 is communicated with the outside through the high temperature heat exchanger 7 and adjusted to be that the gas channel of the fourth expansion machine 12 is communicated with the outside through the new high temperature heat exchanger B and the high temperature heat exchanger 7, and the new expansion machine C is connected with the compressor 1 and transmits power.
(2) Compared with the circulation flow of the multiple combined cycle power plant shown in FIG. 3, the difference is that the steam discharged from the compressor 1 flows through the high temperature heat exchanger 7 and absorbs heat, and then enters the new expansion machine C to reduce pressure and do work; the steam discharged by the newly-increased expansion machine C flows through the newly-increased high-temperature heat exchanger B and absorbs heat, and then enters the expansion machine 2 to reduce the pressure and do work; the work output by the new expansion machine C is provided for the compressor 1 as power or is provided to the outside, and the fuel gas discharged by the fourth expansion machine 12 flows through the new high-temperature heat exchanger B and the high-temperature heat exchanger 7 and gradually releases heat to form a multiple combined cycle power device.
The multiple combined cycle power plant of FIG. 10 is implemented as follows:
(1) structurally, in the multiple combined cycle power plant shown in fig. 8, a low-temperature heat regenerator is added, a steam channel of the compressor 1 is communicated with the newly added compressor a through a high-temperature heat exchanger 7 and adjusted to be communicated with the compressor 1 through a steam channel of the compressor 1 through a low-temperature heat regenerator 17 and the high-temperature heat exchanger 7, and a steam channel of the expander 2 is communicated with the mixed evaporator 9 through a medium-temperature evaporator 10 and adjusted to be communicated with the mixed evaporator 9 through a steam channel of the expander 2 through the low-temperature heat regenerator 17 and the medium-temperature evaporator 10.
(2) Compared with the circulation flow of the multiple combined cycle power plant shown in fig. 8, the difference in the flow is that the steam discharged from the compressor 1 flows through the low-temperature heat regenerator 17 and the high-temperature heat exchanger 7 and gradually absorbs heat to raise the temperature, and the steam discharged from the expander 2 flows through the low-temperature heat regenerator 17 and the medium-temperature evaporator 10 to gradually release heat to lower the temperature and then enters the hybrid evaporator 9, so as to form the multiple combined cycle power plant.
The multiple combined cycle power plant of FIG. 11 is implemented as follows:
(1) structurally, in the multiple combined cycle power plant shown in fig. 3, a third circulation pump, a fourth circulation pump, a heat regenerator and a second heat regenerator are added, a condenser 8 with a condensate pipeline communicated with a mixed evaporator 9 through a circulation pump 5 is adjusted to be that the condenser 8 with the condensate pipeline communicated with the heat regenerator 20 through the circulation pump 5, the condenser 8 with the condensate pipeline communicated with a medium temperature evaporator 10 through a second circulation pump 6 is adjusted to be that the condenser 8 with the condensate pipeline communicated with the second heat regenerator 21 through the second circulation pump 6, a third expander 4 with an additional steam extraction channel communicated with the heat regenerator 20 is added, a second expander 3 with an additional steam extraction channel communicated with the second heat regenerator 21 is added, the heat regenerator 8 with the mixed evaporator 9 through a third circulation pump 18 is added with the condensate pipeline, the second heat regenerator 21 with the condensate pipeline communicated with the medium temperature evaporator 10 through a fourth circulation pump 19 is added with the medium temperature evaporator 10 The steam passage communicates with the second expander 3.
(2) Compared with the circulation flow of the multiple combined cycle power plant shown in fig. 3, the difference is that a part of the condensate of the condenser 8 flows through the circulation pump 5 and enters the heat regenerator 20 after being boosted, and the other part of the condensate enters the second heat regenerator 21 after being boosted by the second circulation pump 6; the steam entering the second expander 3 is decompressed to work to a certain pressure and then divided into two paths, wherein the first path continues to be decompressed to work and enters the condenser 8, and the second path enters the second heat regenerator 21 through the steam extraction channel to be mixed with the condensate for heat release and condensation; the steam entering the third expander 4 is decompressed to work to a certain pressure and then divided into two paths, wherein the first path continues to be decompressed to work and enters the condenser 8, and the second path enters the heat regenerator 20 through the steam extraction channel to be mixed with the condensate to release heat and condense; the condensate of the heat regenerator 20 is boosted by the third circulating pump 18 and then enters the hybrid evaporator 9, and the condensate of the second heat regenerator 21 is boosted by the fourth circulating pump 19 and then enters the medium temperature evaporator 10, so that the multiple combined cycle power device is formed.
The multiple combined cycle power plant of FIG. 12 is implemented as follows:
(1) structurally, in the multiple combined cycle power plant shown in fig. 3, a preheater and a second preheater are added, a condensate pipeline of a condenser 8 is communicated with a mixing evaporator 9 through a circulating pump 5 and adjusted to be that the condenser 8 is communicated with the mixing evaporator 9 through the circulating pump 5 and the preheater 22, a steam channel of a medium temperature evaporator 10 is communicated with a second expander 3 after the condenser 8 is communicated with the medium temperature evaporator 10 through the second circulating pump 6 and the condensate pipeline is adjusted to be that the steam channel of the medium temperature evaporator 10 is communicated with the second expander 3 after the condenser 8 is communicated with the medium temperature evaporator 10 through the second circulating pump 6 and the second preheater 23, and the steam channel of the medium temperature evaporator 10 is communicated with the second expander 3, and the preheater 22 and the second preheater 23 are also respectively communicated with a heat medium channel and the outside.
(2) Compared with the circulation flow of the multiple combined cycle power plant shown in fig. 3, the difference in the flow is that a part of condensate of the condenser 8 enters the mixing evaporator 9 after flowing through the circulating pump 5 to be boosted and flowing through the preheater 22 to absorb heat and be heated, and the other part of condensate of the condenser 8 enters the medium temperature evaporator 10 after flowing through the second circulating pump 6 to be boosted and flowing through the second preheater 23 to absorb heat and be heated, so that the multiple combined cycle power plant is formed.
The multiple combined cycle power plant of FIG. 13 is implemented as follows:
in the multiple combined cycle power plant shown in fig. 12, the condenser 8 with a condensate pipeline is communicated with the mixed evaporator 9 through the circulating pump 5 and the preheater 22, and the condenser 8 with a condensate pipeline is communicated with the medium temperature evaporator 10 through the second circulating pump 6 and the second preheater 23, and the two ways are adjusted together, namely the condenser 8 with a condensate pipeline is divided into two ways after passing through the circulating pump 5 and the preheater 22, the first way is directly communicated with the mixed evaporator 9, and the second way is communicated with the medium temperature evaporator 10 through the second circulating pump 6 and the second preheater 23; the condensate of the condenser 8 is divided into two paths after flowing through the circulating pump 5 for pressure increase and flowing through the preheater 22 for heat absorption and temperature increase, wherein the first path directly enters the mixing evaporator 9, and the second path enters the medium temperature evaporator 10 after flowing through the second circulating pump 6 for pressure increase and flowing through the second preheater 23 for heat absorption and temperature increase, so as to form the multiple combined cycle power device.
The multiple combined cycle power plant of FIG. 14 is implemented as follows:
in the multiple combined cycle power plant shown in fig. 3, an intermediate reheater is added, and the intermediate temperature evaporator 10 having a steam passage communicating with the second expander 3 and the second expander 3 having a steam passage communicating with the condenser 8 are adjusted such that the intermediate temperature evaporator 10 having a steam passage communicating with the second expander 3, the second expander 3 having an intermediate reheater steam passage communicating with the second expander 3 via the intermediate reheater 24 and the second expander 3 having a steam passage communicating with the condenser 8, and the intermediate reheater 19 having a heat medium passage communicating with the outside; when the steam entering the second expansion machine 3 is decompressed and does work to a certain pressure, all the steam is led out and flows through the intermediate reheater 24 through the intermediate reheated steam channel to absorb heat and raise temperature, then enters the second expansion machine 3 to be decompressed and does work continuously, and then enters the condenser 8 to release heat and condense, so that the multiple combined cycle power device is formed.
The multiple combined cycle power plant of FIG. 15 is implemented as follows:
(1) structurally, in the multiple combined cycle power plant shown in fig. 3, a second condenser is added, the second expander 3 is adjusted to have a steam passage to communicate with the condenser 8, the second expander 3 has a steam passage to communicate with the second condenser 25, the condenser 8 has a condensate pipeline to communicate with the medium temperature evaporator 10 through the second circulating pump 6, the second condenser 18 has a condensate pipeline to communicate with the medium temperature evaporator 10 through the second circulating pump 6, and the second condenser 18 also has a cooling medium passage to communicate with the outside.
(2) Compared with the multiple combined cycle power plant shown in fig. 3, the difference in the flow is that the steam discharged from the second expander 3 enters the second condenser 25 to release heat to the cooling medium and condense, the condensate of the second condenser 25 flows through the second circulating pump 6 to increase the pressure and flows through the medium temperature evaporator 10 to absorb heat and vaporize, and then flows through the second expander 3 to reduce the pressure and do work, thereby forming the multiple combined cycle power plant.
The multiple combined cycle power plant of FIG. 16 is implemented as follows:
(1) structurally, in the multiple combined cycle power plant shown in fig. 3, a fifth expander, a newly-added intermediate temperature evaporator and a newly-added circulating pump are added, a condensate pipeline is additionally arranged on a condenser 8 and is communicated with the newly-added intermediate temperature evaporator D through the newly-added circulating pump E, then the newly-added intermediate temperature evaporator D is communicated with a fifth expander 26 through a steam channel, the fifth expander 26 is communicated with the condenser 8 through a steam channel, the expander 2 is communicated with a mixed evaporator 9 through an intermediate temperature evaporator 10, the expander 2 is adjusted to be communicated with the mixed evaporator 9 through the newly-added intermediate temperature evaporator D and the intermediate temperature evaporator 10, and the fifth expander 26 is connected with the outside and outputs power.
(2) Compared with the circulation flow of the multiple combined cycle power plant shown in fig. 3, the difference is that the steam discharged by the expander 2 flows through the newly added intermediate temperature evaporator D and the intermediate temperature evaporator 10, gradually releases heat and cools, and then enters the mixing evaporator 9; part of condensate of the condenser 8 flows through a newly-added circulating pump E to be boosted and flows through a newly-added intermediate-temperature evaporator D to absorb heat and be vaporized, then the condensate enters a fifth expansion machine 26 to be decompressed and work, and steam discharged by the fifth expansion machine 26 enters the condenser 8 to release heat and be condensed; the expander 2, the second expander 3, the third expander 4, the fourth expander 12 and the fifth expander 26 output power to the outside to form a multiple combined cycle power plant.
The multiple combined cycle power plant of FIG. 17 is implemented as follows:
(1) structurally, in the multiple combined cycle power plant shown in fig. 12, a fifth expander, a newly added intermediate temperature evaporator, a newly added circulating pump and a newly added preheater are added, a condensate pipeline is additionally arranged on a condenser 8 and is communicated with the newly added intermediate temperature evaporator D through a newly added circulating pump E and a newly added preheater F, then a steam channel of the newly added intermediate temperature evaporator D is communicated with the fifth expander 26, the fifth expander 26 is also communicated with the condenser 8 through a steam channel, the steam channel of the expander 2 is communicated with a mixed evaporator 9 through an intermediate temperature evaporator 10, the steam channel of the expander 2 is adjusted to be communicated with the mixed evaporator 9 through the newly added intermediate temperature evaporator D and the intermediate temperature evaporator 10, the newly added preheater F is also communicated with the outside through a heat medium channel, and the fifth expander 26 is connected with the outside and outputs power.
(2) Compared with the circulation flow of the multiple combined cycle power plant shown in fig. 12, the difference is that the steam discharged by the expander 2 flows through the newly added intermediate temperature evaporator D and the intermediate temperature evaporator 10, gradually releases heat and cools, and then enters the mixing evaporator 9; part of condensate of the condenser 8 flows through a newly-added circulating pump E for pressure increase, flows through a newly-added preheater F for heat absorption and temperature increase, flows through a newly-added intermediate temperature evaporator D for heat absorption and vaporization, then enters a fifth expansion machine 26 for pressure reduction and work doing, steam discharged by the fifth expansion machine 26 enters the condenser 8 for heat release and condensation, and the expansion machine 2, the second expansion machine 3, the third expansion machine 4, the fourth expansion machine 12 and the fifth expansion machine 26 output power outwards to form a multiple combined cycle power device.
The effect that the technology of the invention can realize-the multiple combined cycle power device provided by the invention has the following effects and advantages:
(1) the original basic advantages of the traditional steam power cycle are kept, and the loss of the low-temperature heat load discharge link is small.
(2) The temperature difference loss of a high-temperature heating link of steam power circulation is reduced, and the heat efficiency is effectively improved.
(3) The graded evaporation realizes reasonable utilization of temperature difference, reduces irreversible loss of heat transfer and improves heat efficiency.
(4) The high-temperature heat load is utilized step by step, the flow is reasonable, the links are few, and the heat efficiency of the device is improved.
(5) The two circulation working mediums realize multiple circulation, reduce heat transfer links and reduce operation cost.
(6) On the premise of realizing high thermal efficiency, the steam power circulation operates at low pressure, and the operation safety of the device is improved.
(7) The high-efficiency utilization of high-quality fuel, non-high-quality fuel and nuclear fuel is realized, the power application values of various energy sources are exerted to the maximum extent, and the adverse effect on the environment is correspondingly reduced.

Claims (36)

1. The multi-combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander and a second high-temperature heat exchanger; the condenser (8) is provided with a condensate pipeline which is communicated with the mixed evaporator (9) through a circulating pump (5), the expander (2) is provided with a steam channel which is communicated with the mixed evaporator (9) through a medium temperature evaporator (10), the mixed evaporator (9) is also provided with a steam channel which is respectively communicated with the compressor (1) and the third expander (4), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through a high temperature heat exchanger (7), and the third expander (4) is also provided with a steam channel which is communicated with the condenser (8); the condenser (8) is also provided with a condensate pipeline which is communicated with the medium-temperature evaporator (10) through a second circulating pump (6), then a steam channel of the medium-temperature evaporator (10) is communicated with the second expander (3), and the second expander (3) is also provided with a steam channel which is communicated with the condenser (8); the external part is provided with a working medium channel which is communicated with a second compressor (11), the second compressor (11) is also provided with a working medium channel which is communicated with a fourth expander (12) through a second high-temperature heat exchanger (13), the fourth expander (12) is also provided with a working medium channel which is communicated with the external part through a high-temperature heat exchanger (7), the second high-temperature heat exchanger (13) is also provided with a heat source medium channel which is communicated with the external part, the high-temperature heat exchanger (7) or the heat source medium channel is also communicated with the external part, a condenser (8) is also provided with a cooling medium channel which is communicated with the external part, the expander (2) is connected with the compressor (1) and transmits power, the fourth expander (12) is connected with the second compressor (11) and transmits power, the expander (2) and, the third expander (4) and the fourth expander (12) are connected with the outside and output power, and a multiple combined cycle power device is formed.
2. The multi-combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander and a second high-temperature heat exchanger; the condenser (8) is provided with a condensate pipeline which is communicated with the mixed evaporator (9) through a circulating pump (5), the expander (2) is provided with a steam channel which is communicated with the mixed evaporator (9) through a medium temperature evaporator (10), the mixed evaporator (9) is also provided with a steam channel which is respectively communicated with the compressor (1) and the third expander (4), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through a high temperature heat exchanger (7), and the third expander (4) is also provided with a steam channel which is communicated with the condenser (8); the condenser (8) is also provided with a condensate pipeline which is communicated with the medium-temperature evaporator (10) through a second circulating pump (6), then a steam channel of the medium-temperature evaporator (10) is communicated with the second expander (3), and the second expander (3) is also provided with a steam channel which is communicated with the condenser (8); the external part is provided with a working medium channel which is communicated with a second compressor (11), the second compressor (11) is also provided with a working medium channel which is communicated with a fourth expander (12) through a second high-temperature heat exchanger (13), the fourth expander (12) is also provided with a working medium channel which is communicated with the external part through a high-temperature heat exchanger (7), the second high-temperature heat exchanger (13) is also provided with a heat source medium channel which is communicated with the external part, the high-temperature heat exchanger (7) or the heat source medium channel is also communicated with the external part, a condenser (8) is also provided with a cooling medium channel which is communicated with the external part, a medium-temperature evaporator (10) or a mixed evaporator (9) is also provided with a heat medium channel which is communicated with the external part, the expander (2) is connected with the compressor (1) and transmits power, the fourth expander (12) is connected with the second compressor (11) and transmits power, and the expander (2), the second expander (3), the third expander (4, forming a multiple combined cycle power plant.
3. The multi-combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander and a second high-temperature heat exchanger; the condenser (8) is provided with a condensate pipeline which is communicated with the mixed evaporator (9) through a circulating pump (5), the expander (2) is provided with a steam channel which is communicated with the mixed evaporator (9) through a medium temperature evaporator (10), the mixed evaporator (9) is also provided with a steam channel which is respectively communicated with the compressor (1) and the third expander (4), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through a high temperature heat exchanger (7), and the third expander (4) is also provided with a steam channel which is communicated with the condenser (8); the condenser (8) is also provided with a condensate pipeline which is communicated with the medium-temperature evaporator (10) through a second circulating pump (6), then a steam channel of the medium-temperature evaporator (10) is communicated with the second expander (3), and the second expander (3) is also provided with a steam channel which is communicated with the condenser (8); the external part is provided with a working medium channel which is communicated with a second compressor (11), the second compressor (11) is also provided with a working medium channel which is communicated with a fourth expander (12) through a second high-temperature heat exchanger (13), the fourth expander (12) is also provided with a working medium channel which is communicated with the external part through a high-temperature heat exchanger (7), the second high-temperature heat exchanger (13) is also provided with a heat source medium channel which is communicated with the external part, the high-temperature heat exchanger (7) or the heat source medium channel is communicated with the external part, a condenser (8) is also provided with a cooling medium channel which is communicated with the external part, a medium-temperature evaporator (10) and a mixed evaporator (9) are also provided with a heat medium channel which is communicated with the external part respectively, the expander (2) is connected with the compressor (1) and transmits power, the fourth expander (12) is connected with the second compressor (11) and transmits power, the expander (2), the second expander (3), the third expander (4) and the, forming a multiple combined cycle power plant.
4. The multiple combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander, a second high-temperature heat exchanger and a high-temperature heat regenerator; the condenser (8) is provided with a condensate pipeline which is communicated with the mixed evaporator (9) through a circulating pump (5), the expander (2) is provided with a steam channel which is communicated with the mixed evaporator (9) through a medium temperature evaporator (10), the mixed evaporator (9) is also provided with a steam channel which is respectively communicated with the compressor (1) and the third expander (4), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through a high temperature heat exchanger (7), and the third expander (4) is also provided with a steam channel which is communicated with the condenser (8); the condenser (8) is also provided with a condensate pipeline which is communicated with the medium-temperature evaporator (10) through a second circulating pump (6), then a steam channel of the medium-temperature evaporator (10) is communicated with the second expander (3), and the second expander (3) is also provided with a steam channel which is communicated with the condenser (8); the external part is provided with a working medium channel which is communicated with a second compressor (11), the second compressor (11) is also provided with a working medium channel which is communicated with a fourth expander (12) through a high-temperature regenerator (14) and a second high-temperature heat exchanger (13), the fourth expander (12) is also provided with a working medium channel which is communicated with the external part through the high-temperature regenerator (14) and the high-temperature heat exchanger (7), the second high-temperature heat exchanger (13) is also provided with a heat source medium channel which is communicated with the external part, the high-temperature heat exchanger (7) or the heat source medium channel is also communicated with the external part, a condenser (8) is also provided with a cooling medium channel which is communicated with the external part, the expander (2) is connected with the compressor (1) and transmits power, the fourth expander (12) is connected with the second compressor (11) and transmits power, the expander (2), the second expander (3), the third expander (4) and the fourth expander (12, forming a multiple combined cycle power plant.
5. The multiple combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander, a second high-temperature heat exchanger and a high-temperature heat regenerator; the condenser (8) is provided with a condensate pipeline which is communicated with the mixed evaporator (9) through a circulating pump (5), the expander (2) is provided with a steam channel which is communicated with the mixed evaporator (9) through a medium temperature evaporator (10), the mixed evaporator (9) is also provided with a steam channel which is respectively communicated with the compressor (1) and the third expander (4), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through a high temperature heat exchanger (7), and the third expander (4) is also provided with a steam channel which is communicated with the condenser (8); the condenser (8) is also provided with a condensate pipeline which is communicated with the medium-temperature evaporator (10) through a second circulating pump (6), then a steam channel of the medium-temperature evaporator (10) is communicated with the second expander (3), and the second expander (3) is also provided with a steam channel which is communicated with the condenser (8); the external part is provided with a working medium channel which is communicated with a second compressor (11), the second compressor (11) is also provided with a working medium channel which is communicated with a fourth expander (12) through a high-temperature regenerator (14) and a second high-temperature heat exchanger (13), the fourth expander (12) is also provided with a working medium channel which is communicated with the external part through the high-temperature regenerator (14) and a high-temperature heat exchanger (7), the second high-temperature heat exchanger (13) is also provided with a heat source medium channel which is communicated with the external part, the high-temperature heat exchanger (7) or the heat source medium channel are also communicated with the external part, a condenser (8) is also provided with a cooling medium channel which is communicated with the external part, a medium-temperature evaporator (10) or a mixed evaporator (9) is also provided with a heat medium channel which is communicated with the external part, the expander (2) is connected with the compressor (1) and transmits power, the fourth expander (12), The second expander (3), the third expander (4) and the fourth expander (12) are connected with the outside and output power, and a multiple combined cycle power device is formed.
6. The multiple combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander, a second high-temperature heat exchanger and a high-temperature heat regenerator; the condenser (8) is provided with a condensate pipeline which is communicated with the mixed evaporator (9) through a circulating pump (5), the expander (2) is provided with a steam channel which is communicated with the mixed evaporator (9) through a medium temperature evaporator (10), the mixed evaporator (9) is also provided with a steam channel which is respectively communicated with the compressor (1) and the third expander (4), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through a high temperature heat exchanger (7), and the third expander (4) is also provided with a steam channel which is communicated with the condenser (8); the condenser (8) is also provided with a condensate pipeline which is communicated with the medium-temperature evaporator (10) through a second circulating pump (6), then a steam channel of the medium-temperature evaporator (10) is communicated with the second expander (3), and the second expander (3) is also provided with a steam channel which is communicated with the condenser (8); the external part is provided with a working medium channel which is communicated with a second compressor (11), the second compressor (11) is also provided with a working medium channel which is communicated with a fourth expander (12) through a high-temperature heat regenerator (14) and a second high-temperature heat exchanger (13), the fourth expander (12) is also provided with a working medium channel which is communicated with the external part through the high-temperature heat regenerator (14) and a high-temperature heat exchanger (7), the second high-temperature heat exchanger (13) is also provided with a heat source medium channel which is communicated with the external part, the high-temperature heat exchanger (7) or the heat source medium channel is also communicated with the external part, a condenser (8) is also provided with a cooling medium channel which is communicated with the external part, a medium-temperature evaporator (10) and a mixed evaporator (9) are also provided with a heat medium channel which is communicated with the external part respectively, the expander (2) is connected with the compressor (1) and transmits power, the fourth expander (12, The second expander (3), the third expander (4) and the fourth expander (12) are connected with the outside and output power, and a multiple combined cycle power device is formed.
7. The multiple combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander and a combustion chamber; the condenser (8) is provided with a condensate pipeline which is communicated with the mixed evaporator (9) through a circulating pump (5), the expander (2) is provided with a steam channel which is communicated with the mixed evaporator (9) through a medium temperature evaporator (10), the mixed evaporator (9) is also provided with a steam channel which is respectively communicated with the compressor (1) and the third expander (4), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through a high temperature heat exchanger (7), and the third expander (4) is also provided with a steam channel which is communicated with the condenser (8); the condenser (8) is also provided with a condensate pipeline which is communicated with the medium-temperature evaporator (10) through a second circulating pump (6), then a steam channel of the medium-temperature evaporator (10) is communicated with the second expander (3), and the second expander (3) is also provided with a steam channel which is communicated with the condenser (8); an air channel is arranged outside and communicated with a second compressor (11), the second compressor (11) is also provided with an air channel and communicated with a combustion chamber (15), a fuel channel is also arranged outside and communicated with the combustion chamber (15), the combustion chamber (15) is also provided with a fuel channel and communicated with a fourth expander (12), the fourth expander (12) is also provided with a fuel channel and communicated with the outside through a high-temperature heat exchanger (7), a condenser (8) is also provided with a cooling medium channel and communicated with the outside, the expander (2) is connected with the compressor (1) and transmits power, the fourth expander (12) is connected with the second compressor (11) and transmits power, and the expander (2), the second expander (3), the third expander (4) and the fourth expander (12) are connected with the outside and output power to form a multiple combined cycle power device.
8. The multiple combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander and a combustion chamber; the condenser (8) is provided with a condensate pipeline which is communicated with the mixed evaporator (9) through a circulating pump (5), the expander (2) is provided with a steam channel which is communicated with the mixed evaporator (9) through a medium temperature evaporator (10), the mixed evaporator (9) is also provided with a steam channel which is respectively communicated with the compressor (1) and the third expander (4), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through a high temperature heat exchanger (7), and the third expander (4) is also provided with a steam channel which is communicated with the condenser (8); the condenser (8) is also provided with a condensate pipeline which is communicated with the medium-temperature evaporator (10) through a second circulating pump (6), then a steam channel of the medium-temperature evaporator (10) is communicated with the second expander (3), and the second expander (3) is also provided with a steam channel which is communicated with the condenser (8); an air channel is arranged outside and communicated with a second compressor (11), the second compressor (11) is also provided with an air channel and communicated with a combustion chamber (15), a fuel channel is also arranged outside and communicated with the combustion chamber (15), the combustion chamber (15) is also provided with a fuel gas channel and communicated with a fourth expander (12), the fourth expander (12) is also provided with a fuel gas channel and communicated with the outside through a high-temperature heat exchanger (7), a condenser (8) is also provided with a cooling medium channel and communicated with the outside, a medium-temperature evaporator (10) or a mixed evaporator (9) is also provided with a heat medium channel and communicated with the outside, an expander (2) is connected with the compressor (1) and transmits power, the fourth expander (12) is connected with the second compressor (11) and transmits power, the expander (2) and the second expander (3), the third expander (4) and the fourth expander (12) are connected with the outside and output power, and a multiple combined cycle power device is formed.
9. The multiple combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander and a combustion chamber; the condenser (8) is provided with a condensate pipeline which is communicated with the mixed evaporator (9) through a circulating pump (5), the expander (2) is provided with a steam channel which is communicated with the mixed evaporator (9) through a medium temperature evaporator (10), the mixed evaporator (9) is also provided with a steam channel which is respectively communicated with the compressor (1) and the third expander (4), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through a high temperature heat exchanger (7), and the third expander (4) is also provided with a steam channel which is communicated with the condenser (8); the condenser (8) is also provided with a condensate pipeline which is communicated with the medium-temperature evaporator (10) through a second circulating pump (6), then a steam channel of the medium-temperature evaporator (10) is communicated with the second expander (3), and the second expander (3) is also provided with a steam channel which is communicated with the condenser (8); an air channel is arranged outside and communicated with a second compressor (11), the second compressor (11) is also provided with an air channel and communicated with a combustion chamber (15), a fuel channel is also arranged outside and communicated with the combustion chamber (15), the combustion chamber (15) is also provided with a fuel channel and communicated with a fourth expander (12), the fourth expander (12) is also provided with a fuel channel and communicated with the outside through a high-temperature heat exchanger (7), a condenser (8) is also provided with a cooling medium channel and communicated with the outside, a medium-temperature evaporator (10) and a mixed evaporator (9) are also provided with a heat medium channel and communicated with the outside respectively, an expander (2) is connected with the compressor (1) and transmits power, the fourth expander (12) is connected with the second compressor (11) and transmits power, the expander (2) and the second expander (3), the third expander (4) and the fourth expander (12) are connected with the outside and output power, and a multiple combined cycle power device is formed.
10. The multiple combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander, a combustion chamber and a high-temperature heat regenerator; the condenser (8) is provided with a condensate pipeline which is communicated with the mixed evaporator (9) through a circulating pump (5), the expander (2) is provided with a steam channel which is communicated with the mixed evaporator (9) through a medium temperature evaporator (10), the mixed evaporator (9) is also provided with a steam channel which is respectively communicated with the compressor (1) and the third expander (4), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through a high temperature heat exchanger (7), and the third expander (4) is also provided with a steam channel which is communicated with the condenser (8); the condenser (8) is also provided with a condensate pipeline which is communicated with the medium-temperature evaporator (10) through a second circulating pump (6), then a steam channel of the medium-temperature evaporator (10) is communicated with the second expander (3), and the second expander (3) is also provided with a steam channel which is communicated with the condenser (8); an air channel is arranged outside and communicated with a second compressor (11), the second compressor (11) is also provided with an air channel which is communicated with a combustion chamber (15) through a high-temperature heat regenerator (14), a fuel channel is also arranged outside and communicated with the combustion chamber (15), the combustion chamber (15) is also provided with a fuel gas channel which is communicated with a fourth expander (12), the fourth expander (12) is also provided with a fuel gas channel which is communicated with the outside through the high-temperature heat regenerator (14) and a high-temperature heat exchanger (7), a condenser (8) is also provided with a cooling medium channel which is communicated with the outside, the expander (2) is connected with the compressor (1) and transmits power, the fourth expander (12) is connected with the second compressor (11) and transmits power, and the expander (2), the second expander (3), the third expander (4) and the fourth expander (12) are connected with the outside and output power, so that the multi-combined-cycle power device is formed.
11. The multiple combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander, a combustion chamber and a high-temperature heat regenerator; the condenser (8) is provided with a condensate pipeline which is communicated with the mixed evaporator (9) through a circulating pump (5), the expander (2) is provided with a steam channel which is communicated with the mixed evaporator (9) through a medium temperature evaporator (10), the mixed evaporator (9) is also provided with a steam channel which is respectively communicated with the compressor (1) and the third expander (4), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through a high temperature heat exchanger (7), and the third expander (4) is also provided with a steam channel which is communicated with the condenser (8); the condenser (8) is also provided with a condensate pipeline which is communicated with the medium-temperature evaporator (10) through a second circulating pump (6), then a steam channel of the medium-temperature evaporator (10) is communicated with the second expander (3), and the second expander (3) is also provided with a steam channel which is communicated with the condenser (8); an air channel is arranged outside and communicated with a second compressor (11), the second compressor (11) is also provided with an air channel which is communicated with a combustion chamber (15) through a high-temperature heat regenerator (14), a fuel channel is also arranged outside and communicated with the combustion chamber (15), the combustion chamber (15) is also provided with a fuel gas channel which is communicated with a fourth expander (12), the fourth expander (12) is also provided with a fuel gas channel which is communicated with the outside through the high-temperature heat regenerator (14) and a high-temperature heat exchanger (7), a condenser (8) is also provided with a cooling medium channel which is communicated with the outside, a medium temperature evaporator (10) or a mixed evaporator (9) is also provided with a heat medium channel which is communicated with the outside, the expander (2) is connected with the compressor (1) and transmits power, the fourth expander (12) is connected with the second compressor (11) and transmits power, the expander (2), the second expander (3), the third expander (4) and the fourth expander (12) are connected with the outside and output power, forming a multiple combined cycle power plant.
12. The multiple combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander, a combustion chamber and a high-temperature heat regenerator; the condenser (8) is provided with a condensate pipeline which is communicated with the mixed evaporator (9) through a circulating pump (5), the expander (2) is provided with a steam channel which is communicated with the mixed evaporator (9) through a medium temperature evaporator (10), the mixed evaporator (9) is also provided with a steam channel which is respectively communicated with the compressor (1) and the third expander (4), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through a high temperature heat exchanger (7), and the third expander (4) is also provided with a steam channel which is communicated with the condenser (8); the condenser (8) is also provided with a condensate pipeline which is communicated with the medium-temperature evaporator (10) through a second circulating pump (6), then a steam channel of the medium-temperature evaporator (10) is communicated with the second expander (3), and the second expander (3) is also provided with a steam channel which is communicated with the condenser (8); an air channel is arranged outside and communicated with a second compressor (11), the second compressor (11) is also provided with an air channel which is communicated with a combustion chamber (15) through a high-temperature heat regenerator (14), a fuel channel is also arranged outside and communicated with the combustion chamber (15), the combustion chamber (15) is also provided with a fuel gas channel which is communicated with a fourth expander (12), the fourth expander (12) is also provided with a fuel gas channel which is communicated with the outside through the high-temperature heat regenerator (14) and a high-temperature heat exchanger (7), a condenser (8) is also provided with a cooling medium channel which is communicated with the outside, a medium temperature evaporator (10) and a mixed evaporator (9) are also provided with a heat medium channel which is communicated with the outside respectively, the expander (2) is connected with the compressor (1) and transmits power, the fourth expander (12) is connected with the second compressor (11) and transmits power, the expander (2), the second expander (3), the third expander (4) and the fourth expander (12) are connected with the outside and output power, forming a multiple combined cycle power plant.
13. The multiple combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander, a combustion chamber and a third compressor; the condenser (8) is provided with a condensate pipeline which is communicated with the mixed evaporator (9) through a circulating pump (5), the expander (2) is provided with a steam channel which is communicated with the mixed evaporator (9) through a medium temperature evaporator (10), the mixed evaporator (9) is also provided with a steam channel which is respectively communicated with the compressor (1) and the third expander (4), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through a high temperature heat exchanger (7), and the third expander (4) is also provided with a steam channel which is communicated with the condenser (8); the condenser (8) is also provided with a condensate pipeline which is communicated with the medium-temperature evaporator (10) through a second circulating pump (6), then a steam channel of the medium-temperature evaporator (10) is communicated with the second expander (3), and the second expander (3) is also provided with a steam channel which is communicated with the condenser (8); an air channel is arranged outside and communicated with a second compressor (11), the second compressor (11) is also provided with an air channel and communicated with a combustion chamber (15), a gaseous fuel channel is also arranged outside and communicated with the combustion chamber (15) through a third compressor (16), the combustion chamber (15) is also provided with a gas channel and communicated with a fourth expander (12), the fourth expander (12) is also provided with a gas channel and communicated with the outside through a high-temperature heat exchanger (7), a condenser (8) is also provided with a cooling medium channel and communicated with the outside, the expander (2) is connected with the compressor (1) and transmits power, the fourth expander (12) is connected with the second compressor (11) and the third compressor (16) and transmits power, and the expander (2), the second expander (3), the third expander (4) and the fourth expander (12) are connected with the outside and output power, so that the multi-combined-cycle power device is formed.
14. The multiple combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander, a combustion chamber and a third compressor; the condenser (8) is provided with a condensate pipeline which is communicated with the mixed evaporator (9) through a circulating pump (5), the expander (2) is provided with a steam channel which is communicated with the mixed evaporator (9) through a medium temperature evaporator (10), the mixed evaporator (9) is also provided with a steam channel which is respectively communicated with the compressor (1) and the third expander (4), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through a high temperature heat exchanger (7), and the third expander (4) is also provided with a steam channel which is communicated with the condenser (8); the condenser (8) is also provided with a condensate pipeline which is communicated with the medium-temperature evaporator (10) through a second circulating pump (6), then a steam channel of the medium-temperature evaporator (10) is communicated with the second expander (3), and the second expander (3) is also provided with a steam channel which is communicated with the condenser (8); an air channel is arranged outside and communicated with a second compressor (11), the second compressor (11) is also provided with an air channel and communicated with a combustion chamber (15), a gaseous fuel channel is also arranged outside and communicated with the combustion chamber (15) through a third compressor (16), the combustion chamber (15) is also provided with a fuel gas channel and communicated with a fourth expander (12), the fourth expander (12) is also provided with a fuel gas channel and communicated with the outside through a high-temperature heat exchanger (7), a condenser (8) is also provided with a cooling medium channel and communicated with the outside, a medium-temperature evaporator (10) or a mixed evaporator (9) is also provided with a heat medium channel and communicated with the outside, the expander (2) is connected with the compressor (1) and transmits power, the fourth expander (12) is connected with the second compressor (11) and the third compressor (16) and transmits power, the expander (2), the second expander (3), the third expander (4) and the fourth expander (12) are connected with the outside and output power, forming a multiple combined cycle power plant.
15. The multiple combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander, a combustion chamber and a third compressor; the condenser (8) is provided with a condensate pipeline which is communicated with the mixed evaporator (9) through a circulating pump (5), the expander (2) is provided with a steam channel which is communicated with the mixed evaporator (9) through a medium temperature evaporator (10), the mixed evaporator (9) is also provided with a steam channel which is respectively communicated with the compressor (1) and the third expander (4), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through a high temperature heat exchanger (7), and the third expander (4) is also provided with a steam channel which is communicated with the condenser (8); the condenser (8) is also provided with a condensate pipeline which is communicated with the medium-temperature evaporator (10) through a second circulating pump (6), then a steam channel of the medium-temperature evaporator (10) is communicated with the second expander (3), and the second expander (3) is also provided with a steam channel which is communicated with the condenser (8); an air channel is arranged outside and communicated with a second compressor (11), the second compressor (11) is also provided with an air channel and communicated with a combustion chamber (15), a gaseous fuel channel is also arranged outside and communicated with the combustion chamber (15) through a third compressor (16), the combustion chamber (15) is also provided with a fuel gas channel and communicated with a fourth expander (12), the fourth expander (12) is also provided with a fuel gas channel and communicated with the outside through a high-temperature heat exchanger (7), a condenser (8) is also provided with a cooling medium channel and communicated with the outside, a medium-temperature evaporator (10) and a mixed evaporator (9) are also respectively provided with a heat medium channel and communicated with the outside, the expander (2) is connected with the compressor (1) and transmits power, the fourth expander (12) is connected with the second compressor (11) and the third compressor (16) and transmits power, the expander (2), the second expander (3), the third expander (4) and the fourth expander (12) are connected with the outside and output power, forming a multiple combined cycle power plant.
16. The multiple combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander, a combustion chamber, a third compressor and a high-temperature heat regenerator; the condenser (8) is provided with a condensate pipeline which is communicated with the mixed evaporator (9) through a circulating pump (5), the expander (2) is provided with a steam channel which is communicated with the mixed evaporator (9) through a medium temperature evaporator (10), the mixed evaporator (9) is also provided with a steam channel which is respectively communicated with the compressor (1) and the third expander (4), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through a high temperature heat exchanger (7), and the third expander (4) is also provided with a steam channel which is communicated with the condenser (8); the condenser (8) is also provided with a condensate pipeline which is communicated with the medium-temperature evaporator (10) through a second circulating pump (6), then a steam channel of the medium-temperature evaporator (10) is communicated with the second expander (3), and the second expander (3) is also provided with a steam channel which is communicated with the condenser (8); an air channel is arranged outside and communicated with a second compressor (11), the second compressor (11) is also provided with an air channel which is communicated with a combustion chamber (15) through a high-temperature heat regenerator (14), a gaseous fuel channel is also arranged outside and communicated with the combustion chamber (15) through a third compressor (16) and the high-temperature heat regenerator (14), the combustion chamber (15) is also provided with a gas channel which is communicated with a fourth expander (12), the fourth expander (12) is also provided with a gas channel which is communicated with the outside through the high-temperature heat regenerator (14) and a high-temperature heat exchanger (7), a condenser (8) is also provided with a cooling medium channel which is communicated with the outside, the expander (2) is connected with the compressor (1) and transmits power, the fourth expander (12) is connected with the second compressor (11) and the third compressor (16) and transmits power, the expander (2), the second expander (3), the third expander (4) and the fourth expander (12) are connected with the outside and output power, forming a multiple combined cycle power plant.
17. The multiple combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander, a combustion chamber, a third compressor and a high-temperature heat regenerator; the condenser (8) is provided with a condensate pipeline which is communicated with the mixed evaporator (9) through a circulating pump (5), the expander (2) is provided with a steam channel which is communicated with the mixed evaporator (9) through a medium temperature evaporator (10), the mixed evaporator (9) is also provided with a steam channel which is respectively communicated with the compressor (1) and the third expander (4), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through a high temperature heat exchanger (7), and the third expander (4) is also provided with a steam channel which is communicated with the condenser (8); the condenser (8) is also provided with a condensate pipeline which is communicated with the medium-temperature evaporator (10) through a second circulating pump (6), then a steam channel of the medium-temperature evaporator (10) is communicated with the second expander (3), and the second expander (3) is also provided with a steam channel which is communicated with the condenser (8); an air channel is arranged outside and communicated with a second compressor (11), the second compressor (11) is also provided with an air channel which is communicated with a combustion chamber (15) through a high-temperature heat regenerator (14), a gaseous fuel channel is also arranged outside and communicated with the combustion chamber (15) through a third compressor (16) and the high-temperature heat regenerator (14), the combustion chamber (15) is also provided with a gas channel which is communicated with a fourth expander (12), the fourth expander (12) is also provided with a gas channel which is communicated with the outside through the high-temperature heat regenerator (14) and a high-temperature heat exchanger (7), a condenser (8) is also provided with a cooling medium channel which is communicated with the outside, a medium temperature evaporator (10) or a mixed evaporator (9) is also provided with a heat medium channel which is communicated with the outside, the expander (2) is connected with the compressor (1) and transmits power, the fourth expander (12) is connected with the second compressor (11) and the third compressor (16) and transmits power, and the expander (2, The second expander (3), the third expander (4) and the fourth expander (12) are connected with the outside and output power, and a multiple combined cycle power device is formed.
18. The multiple combined cycle power plant mainly comprises a compressor, an expander, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, a second compressor, a fourth expander, a combustion chamber, a third compressor and a high-temperature heat regenerator; the condenser (8) is provided with a condensate pipeline which is communicated with the mixed evaporator (9) through a circulating pump (5), the expander (2) is provided with a steam channel which is communicated with the mixed evaporator (9) through a medium temperature evaporator (10), the mixed evaporator (9) is also provided with a steam channel which is respectively communicated with the compressor (1) and the third expander (4), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through a high temperature heat exchanger (7), and the third expander (4) is also provided with a steam channel which is communicated with the condenser (8); the condenser (8) is also provided with a condensate pipeline which is communicated with the medium-temperature evaporator (10) through a second circulating pump (6), then a steam channel of the medium-temperature evaporator (10) is communicated with the second expander (3), and the second expander (3) is also provided with a steam channel which is communicated with the condenser (8); an air channel is arranged outside and communicated with a second compressor (11), the second compressor (11) is also provided with an air channel which is communicated with a combustion chamber (15) through a high-temperature heat regenerator (14), a gaseous fuel channel is also arranged outside and communicated with the combustion chamber (15) through a third compressor (16) and the high-temperature heat regenerator (14), the combustion chamber (15) is also provided with a gas channel which is communicated with a fourth expander (12), the fourth expander (12) is also provided with a gas channel which is communicated with the outside through the high-temperature heat regenerator (14) and a high-temperature heat exchanger (7), a condenser (8) is also provided with a cooling medium channel which is communicated with the outside, a medium temperature evaporator (10) and a mixed evaporator (9) are also provided with a heat medium channel which is communicated with the outside respectively, the expander (2) is connected with the compressor (1) and transmits power, the fourth expander (12) is connected with the second compressor (11) and the third compressor (16) and transmits power, the expander (2), the second expander (3), the third expander (4) and the fourth expander (12) are connected with the outside and output power, so that a multi-combined-cycle power device is formed.
19. A multi-combined cycle power device is characterized in that a low-temperature regenerator is added in any one of the multi-combined cycle power devices of claims 1 to 18, a steam channel of a compressor (1) is communicated with an expander (2) through a high-temperature heat exchanger (7) and adjusted to be that the compressor (1) is provided with a steam channel which is communicated with the expander (2) through a low-temperature regenerator (17) and the high-temperature heat exchanger (7), and the expander (2) is provided with a steam channel which is communicated with a hybrid evaporator (9) through a medium-temperature evaporator (10) and adjusted to be that the expander (2) is provided with a steam channel which is communicated with the hybrid evaporator (9) through the low-temperature regenerator (17) and the medium-temperature evaporator (10), so that the multi-combined cycle power device is formed.
20. A multi-combined-cycle power plant, in the multi-combined-cycle power plant of any one of claims 1 to 3, a newly added compressor and a newly added high-temperature heat exchanger are added, the compressor (1) is communicated with the expander (2) through the high-temperature heat exchanger (7) and is adjusted to be communicated with the newly added compressor (A) through the high-temperature heat exchanger (7) and the steam channel of the newly added compressor (A) is communicated with the expander (2) through the newly added high-temperature heat exchanger (B), the fourth expander (12) is communicated with the outside through the high-temperature heat exchanger (7) and is adjusted to be communicated with the outside through the high-temperature heat exchanger (7) and is provided with a working medium channel of the fourth expander (12) which is communicated with the outside through the newly added high-temperature heat exchanger (B) and the high-temperature heat exchanger (7), and the newly added high-temperature heat exchanger (B) or a heat source, the expander (2) is connected with the newly-added compressor (A) and transmits power to form a multi-combined-cycle power device.
21. A multi-combined cycle power plant, in the multi-combined cycle power plant of any claim 4-6, adding a new compressor and a new high temperature heat exchanger, adjusting the communication between the compressor (1) and the expander (2) through the high temperature heat exchanger (7) to the state that the compressor (1) has a steam passage communicated with the new compressor (A) through the high temperature heat exchanger (7), the new compressor (A) has a steam passage communicated with the expander (2) through the new high temperature heat exchanger (B), adjusting the communication between the fourth expander (12) and the outside through the high temperature regenerator (14) and the high temperature heat exchanger (7) to the state that the fourth expander (12) has a working medium passage communicated with the outside through the high temperature regenerator (14), the new high temperature heat exchanger (B) and the high temperature heat exchanger (7), and the new high temperature heat exchanger (B) or the heat source medium passage communicated with the outside, the expander (2) is connected with the newly-added compressor (A) and transmits power to form a multi-combined-cycle power device.
22. A multi-combined cycle power plant, which is characterized in that a newly-added compressor and a newly-added high-temperature heat exchanger are added in the multi-combined cycle power plant of any one of claims 7 to 9 and 13 to 15, a steam channel of the compressor (1) is communicated with the expander (2) through the high-temperature heat exchanger (7) and is adjusted to be communicated with the newly-added compressor (A) through the high-temperature heat exchanger (7), a steam channel of the newly-added compressor (A) is communicated with the expander (2) through the newly-added high-temperature heat exchanger (B), a gas channel of a fourth expander (12) is communicated with the outside through the high-temperature heat exchanger (7) and is adjusted to be communicated with the outside through the newly-added high-temperature heat exchanger (B) and the high-temperature heat exchanger (7), the expander (2) is connected with the newly-added compressor (A) and transmits power, forming a multiple combined cycle power plant.
23. A multi-combined cycle power plant, which is characterized in that a newly-added compressor and a newly-added high-temperature heat exchanger are added in the multi-combined cycle power plant of any one of claims 10 to 12 and 16 to 18, a steam channel of the compressor (1) is communicated with the expander (2) through the high-temperature heat exchanger (7) and is adjusted to be communicated with the newly-added compressor (A) through the high-temperature heat exchanger (7), a steam channel of the newly-added compressor (A) is communicated with the expander (2) through the newly-added high-temperature heat exchanger (B), a gas channel of the fourth expander (12) is communicated with the outside through the high-temperature regenerator (14) and the high-temperature heat exchanger (7) and is adjusted to be communicated with the outside through the high-temperature regenerator (14), the newly-added high-temperature heat exchanger (B) and the high-temperature heat exchanger (7), the expander (2) is connected with the newly-added compressor (A) and transmits power to form a multi-combined-cycle power device.
24. A multi-combined-cycle power plant, wherein a new expansion machine and a new high-temperature heat exchanger are added in the multi-combined-cycle power plant according to any one of claims 1 to 3, a steam passage of a compressor (1) is communicated with an expansion machine (2) through a high-temperature heat exchanger (7) and is adjusted to be communicated with a new expansion machine (C) through the high-temperature heat exchanger (7) and the steam passage of the new expansion machine (C) is communicated with the expansion machine (2) through the new high-temperature heat exchanger (B), a working medium passage of a fourth expansion machine (12) is communicated with the outside through the high-temperature heat exchanger (7) and is adjusted to be communicated with the outside through the high-temperature heat exchanger (7) and is communicated with the fourth expansion machine (12) through the new high-temperature heat exchanger (B) and the high-temperature heat exchanger (7), and the new high-temperature heat exchanger (B) or a heat source medium passage is communicated, the new expansion machine (C) is connected with the compressor (1) and transmits power to form a multiple combined cycle power device.
25. A multi-combined cycle power plant, in any one of the multi-combined cycle power plants of claims 4-6, a new expansion machine and a new high temperature heat exchanger are added, a steam channel of a compressor (1) is communicated with an expansion machine (2) through the high temperature heat exchanger (7) and is adjusted to be communicated with the new expansion machine (C) through the high temperature heat exchanger (7) and the steam channel of the new expansion machine (C) is communicated with the expansion machine (2) through the new high temperature heat exchanger (B), a working medium channel of a fourth expansion machine (12) is communicated with the outside through the high temperature regenerator (14) and the high temperature heat exchanger (7) and is adjusted to be communicated with the outside through the high temperature regenerator (14), the new high temperature heat exchanger (B) and the high temperature heat exchanger (7) and the new high temperature heat exchanger (B) or the heat source medium channel is communicated with the outside, the new expansion machine (C) is connected with the compressor (1) and transmits power to form a multiple combined cycle power device.
26. A multi-combined cycle power plant, in the multi-combined cycle power plant of any claim 7-9, 13-15, a new expansion machine and a new high temperature heat exchanger are added, the compressor (1) is provided with a steam channel which is communicated with the expansion machine (2) through the high temperature heat exchanger (7) and is adjusted to be provided with a steam channel which is communicated with the new expansion machine (C) through the high temperature heat exchanger (7), the new expansion machine (C) is provided with a steam channel which is communicated with the expansion machine (2) through the new high temperature heat exchanger (B), the fourth expansion machine (12) is provided with a gas channel which is communicated with the outside through the high temperature heat exchanger (7) and is adjusted to be provided with a gas channel which is communicated with the outside through the new high temperature heat exchanger (B) and the high temperature heat exchanger (7), the new expansion machine (C) is connected with the compressor (1) and transmits power, forming a multiple combined cycle power plant.
27. A multi-combined cycle power plant, which is characterized in that a new expansion machine and a new high temperature heat exchanger are added in the multi-combined cycle power plant of any one of claims 10 to 12 and 16 to 18, a steam channel of a compressor (1) is communicated with an expansion machine (2) through the high temperature heat exchanger (7) and is adjusted to be communicated with a new expansion machine (C) through the high temperature heat exchanger (7) and the steam channel of the new expansion machine (C) is communicated with the expansion machine (2) through the new high temperature heat exchanger (B), a gas channel of a fourth expansion machine (12) is communicated with the outside through the high temperature regenerator (14) and the high temperature heat exchanger (7) and is adjusted to be communicated with the outside through the high temperature regenerator (14), the new high temperature heat exchanger (B) and the high temperature heat exchanger (7) and is communicated with the outside through the fourth expansion machine (12), the new expansion machine (C) is connected with the compressor (1) and transmits power to form a multiple combined cycle power device.
28. A multi-combined cycle power plant, which is characterized in that in any one of the multi-combined cycle power plants of claims 20-23, a low-temperature heat regenerator is added, a steam channel of a compressor (1) is communicated with a newly-added compressor (A) through a high-temperature heat exchanger (7) and is adjusted to be communicated with the newly-added compressor (A) through a low-temperature heat regenerator (17) and the high-temperature heat exchanger (7), a steam channel of an expander (2) is communicated with a hybrid evaporator (9) through a medium-temperature evaporator (10) and is adjusted to be communicated with the hybrid evaporator (9) through the low-temperature heat regenerator (17) and the medium-temperature evaporator (10), and the multi-combined cycle power plant is formed.
29. A multi-combined cycle power plant, which is characterized in that in any one of the multi-combined cycle power plants of claims 24-27, a low-temperature regenerator is added, a steam channel of a compressor (1) is communicated with a new expansion machine (C) through a high-temperature heat exchanger (7) and is adjusted to be communicated with the new expansion machine (C) through the low-temperature regenerator (17) and the high-temperature heat exchanger (7), a steam channel of an expansion machine (2) is communicated with a mixed evaporator (9) through a medium-temperature evaporator (10) and is adjusted to be communicated with the mixed evaporator (9) through the low-temperature regenerator (17) and the medium-temperature evaporator (10), and thus the multi-combined cycle power plant is formed.
30. A multi-combined cycle power plant, which is characterized in that in any one of the multi-combined cycle power plants of claims 1-29, a third circulating pump, a fourth circulating pump, a heat regenerator and a second heat regenerator are added, a condenser (8) is communicated with a mixed evaporator (9) through a circulating pump (5) and adjusted into a state that the condenser (8) is communicated with the heat regenerator (20) through the circulating pump (5) and a condensate pipeline is communicated with a medium temperature evaporator (10) through a second circulating pump (6), then a steam channel of the medium temperature evaporator (10) is communicated with a second expander (3) and adjusted into a state that the condenser (8) is communicated with the second heat regenerator (21) through the second circulating pump (6) and a condensate pipeline is additionally arranged on the third expander (4) and communicated with the heat regenerator (20), and a steam extraction channel of the second expander (3) is additionally arranged and communicated with the second heat regenerator (21), the heat regenerator (8) is also provided with a condensate pipeline which is communicated with the mixed evaporator (9) through a third circulating pump (18), the second heat regenerator (21) is also provided with a condensate pipeline which is communicated with the medium temperature evaporator (10) through a fourth circulating pump (19), and then the medium temperature evaporator (10) is also provided with a steam channel which is communicated with the second expander (3), so that the multiple combined cycle power device is formed.
31. A multi-combined cycle power plant, in any one of the multi-combined cycle power plants of claims 1-29, a preheater and a second preheater are added, a condenser (8) is provided with a condensate pipeline which is communicated with a mixed evaporator (9) through a circulating pump (5) and is adjusted to be communicated with the mixed evaporator (9) through the circulating pump (5) and the preheater (22), the condenser (8) is provided with a condensate pipeline which is communicated with a medium temperature evaporator (10) through a second circulating pump (6), then a steam channel is arranged on the medium temperature evaporator (10) to be communicated with a second expander (3), the condenser (8) is adjusted to be communicated with the medium temperature evaporator (10) through the second circulating pump (6) and the second preheater (23), then a steam channel is arranged on the medium temperature evaporator (10) to be communicated with the second expander (3), the preheater (22) and the second preheater (23) are respectively provided with a heat medium channel which is communicated with the outside, forming a multiple combined cycle power plant.
32. A multiple combined cycle power plant, in any one of the multiple combined cycle power plants of claim 31, wherein a condenser (8) is provided with a condensate pipeline which is communicated with a mixed evaporator (9) through a circulating pump (5) and a preheater (22), and the condenser (8) is provided with a condensate pipeline which is communicated with a medium temperature evaporator (10) through a second circulating pump (6) and a second preheater (23), and the multiple combined cycle power plant is formed by adjusting the condenser (8) to be provided with a condensate pipeline which is divided into two paths after passing through the circulating pump (5) and the preheater (22), wherein the first path is directly communicated with the mixed evaporator (9), and the second path is communicated with the medium temperature evaporator (10) through the second circulating pump (6) and the second preheater (23).
33. A multi-combined-cycle power plant, wherein an intermediate reheater is added to the multi-combined-cycle power plant as defined in any one of claims 1 to 32, and the intermediate temperature evaporator (10) having a steam passage communicating with the second expander (3) and the second expander (3) having a steam passage communicating with the condenser (8) is adjusted such that the intermediate temperature evaporator (10) having a steam passage communicating with the second expander (3), the second expander (3) and also an intermediate reheater steam passage communicating with the second expander (3) via an intermediate reheater (24), the second expander (3) and also a steam passage communicating with the condenser (8), and the intermediate reheater (19) and also a heat medium passage communicating with the outside, thereby forming a multi-combined-cycle power plant.
34. The multiple combined cycle power plant, in any one of the multiple combined cycle power plants of claims 1-29, a second condenser is added, the second expander (3) is adjusted to have a steam passage communicated with the condenser (8), the second expander (3) has a steam passage communicated with the second condenser (25), the condenser (8) has a condensate pipeline communicated with the medium temperature evaporator (10) through a second circulating pump (6) is adjusted to have a condensate pipeline communicated with the medium temperature evaporator (10) through the second circulating pump (6), the second condenser (18) also has a cooling medium passage communicated with the outside, forming the multiple combined cycle power plant.
35. A multiple combined cycle power plant, in any one of the multiple combined cycle power plants of claims 1-34, a fifth expander, a newly added intermediate temperature evaporator and a newly added circulating pump are added, a condenser (8) is additionally provided with a condensate pipeline which is communicated with the newly added intermediate temperature evaporator (D) through the newly added circulating pump (E), then a steam channel of the newly added intermediate temperature evaporator (D) is communicated with the fifth expander (26), the fifth expander (26) is also communicated with the condenser (8) through a steam channel, the expander (2) is communicated with the mixed evaporator (9) through the intermediate temperature evaporator (10) and is adjusted to be that the expander (2) is provided with a steam channel which is communicated with the mixed evaporator (9) through the newly added intermediate temperature evaporator (D) and the intermediate temperature evaporator (10), the newly added intermediate temperature evaporator (D) or a heat medium channel is communicated with the outside, the fifth expander (26) is connected with the outside and outputs power, forming a multiple combined cycle power plant.
36. A multi-combined cycle power plant, which is characterized in that in any one of the multi-combined cycle power plants of claims 1 to 34, a fifth expander, a newly added intermediate temperature evaporator, a newly added circulating pump and a newly added preheater are added, a condenser (8) is additionally provided with a condensate pipeline which is communicated with the newly added intermediate temperature evaporator (D) through the newly added circulating pump (E) and the newly added preheater (F), then a steam channel of the newly added intermediate temperature evaporator (D) is communicated with the fifth expander (26), the fifth expander (26) is also communicated with the condenser (8) through a steam channel, the expander (2) is provided with a steam channel which is communicated with the mixed evaporator (9) through the intermediate temperature evaporator (10) and is adjusted to be that the expander (2) is provided with a steam channel which is communicated with the mixed evaporator (9) through the newly added intermediate temperature evaporator (D) and the intermediate temperature evaporator (10), and the newly added heat medium channel is also communicated with the outside, the newly-added intermediate temperature evaporator (D) or a heat medium channel is communicated with the outside, and the fifth expander (26) is connected with the outside and outputs power to form a multiple combined cycle power device.
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