CN118309560A - Multifunctional gas-steam combined cycle power plant - Google Patents

Abstract

The invention provides a multifunctional combined cycle power device carrying the same gas and steam, belonging to the technical field of thermal power. The outside is provided with a low-grade fuel channel which is communicated with a combustion chamber, the outside is provided with a medium-grade fuel channel which is communicated with a heating furnace, the outside is provided with an air channel which is communicated with the heating furnace through a heat source heat regenerator, the heating furnace is provided with a fuel gas channel which is communicated with the outside through a heat source heat regenerator, the outside is provided with an air channel which is communicated with a compressor, the compressor is provided with a first air channel which is communicated with the outside through a heat regenerator, an expander and an evaporator, the compressor is provided with a second air channel which is communicated with the combustion chamber, and the combustion chamber is provided with a fuel gas channel which is communicated with the outside through the heating furnace, a nuclear reactor, a fuel gas turbine, the heat regenerator and the evaporator; the condenser is communicated with the steam turbine through the booster pump and the evaporator, and the steam turbine is communicated with the condenser; the condenser is also communicated with the outside through a cooling medium channel to form a multifunctional combined cycle power device carrying the same gas and steam.

Description

Multifunctional gas-steam combined cycle power plant

Technical field:

The invention belongs to the technical field of thermodynamics and thermal dynamics.

The background technology is as follows:

nuclear energy, conventional fuel and photo-thermal can realize thermal work; different system devices are constructed by adopting the same or different thermal power principles, and corresponding construction cost is paid, so that nuclear energy, conventional fuel or photo-thermal conversion into mechanical energy is realized; from a global point of view of power production, it is important to try to reduce the number of thermal power devices.

The method is limited by factors such as working principle, working medium property, material property and safety, and the like, the irreversible temperature difference loss exists in the nuclear energy or photo-thermal power application process, the irreversible temperature difference loss exists in the fuel combustion process, and the irreversible temperature difference loss increases along with the increase of the temperature of a heat source.

In order to increase the thermal efficiency, it is necessary to bring the circulating medium to as high a temperature as possible after the high-temperature load is obtained; however, at this time, the temperature of the circulating working medium discharged by the high-temperature expander is increased, the heat discharge is increased, and the heat transfer temperature difference loss in the thermodynamic system is increased, which has an adverse effect on the improvement of the heat-variable work efficiency.

The invention provides a multi-energy co-gas-steam combined cycle power device which realizes cascade carrying between nuclear energy, medium-grade fuel and low-grade fuel or between nuclear energy, photo-heat and low-grade fuel, has reasonable flow, simple structure, small irreversible loss of systematic temperature difference of a thermal power device and reasonable thermodynamic perfection and high cost performance based on the principle of simply, actively, safely and efficiently utilizing energy to obtain power.

The invention comprises the following steps:

the invention mainly aims to provide a multifunctional portable gas-steam combined cycle power plant, and the specific invention is described in the following items:

1. The multifunctional gas-steam combined cycle power plant mainly comprises a compressor, an expander, a gas turbine, a combustion chamber, a heating furnace, a heat source regenerator, a nuclear reactor, a regenerator, an evaporator, a steam turbine, a booster pump and a condenser; the outside is provided with a low-grade fuel channel which is communicated with a combustion chamber, the outside is provided with a medium-grade fuel channel which is communicated with a heating furnace, the outside is provided with an air channel which is communicated with the heating furnace through a heat source heat regenerator, the heating furnace is provided with a fuel gas channel which is communicated with the outside through a heat source heat regenerator, the outside is provided with an air channel which is communicated with a compressor, the compressor is provided with a first air channel which is communicated with an expander through a heat regenerator, the expander is provided with an air channel which is communicated with the outside through an evaporator, the compressor is provided with a second air channel which is communicated with the combustion chamber, the combustion chamber is provided with a fuel gas channel which is communicated with a fuel gas turbine through the heating furnace and a nuclear reactor, and the fuel gas turbine is provided with a fuel gas channel which is communicated with the outside through the heat regenerator and the evaporator; the condenser is provided with a condensate pipeline which is communicated with the evaporator through a booster pump, then the evaporator is provided with a steam channel which is communicated with a steam turbine, and the steam turbine is also provided with a low-pressure steam channel which is communicated with the condenser; the condenser is also provided with a cooling medium channel which is communicated with the outside, and the gas turbine is connected with the compressor and transmits power to form the multi-energy gas-steam combined cycle power plant.

2. The multifunctional gas-steam combined cycle power plant mainly comprises a compressor, an expander, a gas turbine, a combustion chamber, a heating furnace, a heat source regenerator, a nuclear reactor, a regenerator, an evaporator, a steam turbine, a booster pump and a condenser; the outside has low-grade fuel channel to communicate with combustion chamber, the outside has medium-grade fuel channel to communicate with heating furnace, the outside has air channel to communicate with heating furnace through the heat source regenerator, the heating furnace has gas channel to communicate with outside through the heat source regenerator, the outside has air channel to communicate with compressor, the compressor has first air channel to communicate with expander through the regenerator, the expander has air channel to communicate with outside through the evaporator, the compressor has second air channel to communicate with combustion chamber, the combustion chamber has gas channel to communicate with gas turbine through heating furnace and nuclear reactor, the gas turbine has gas channel to communicate with outside through the evaporator after the gas turbine has gas channel to communicate with oneself through the regenerator; the condenser is provided with a condensate pipeline which is communicated with the evaporator through a booster pump, then the evaporator is provided with a steam channel which is communicated with a steam turbine, and the steam turbine is also provided with a low-pressure steam channel which is communicated with the condenser; the condenser is also provided with a cooling medium channel which is communicated with the outside, and the gas turbine is connected with the compressor and transmits power to form the multi-energy gas-steam combined cycle power plant.

3. The multi-energy combined cycle power device with the same fuel gas and steam mainly comprises a compressor, an expander, a fuel gas turbine, a combustion chamber, a heating furnace, a heat source regenerator, a nuclear reactor, a regenerator, an evaporator, a steam turbine, a booster pump, a condenser and a second regenerator; the outside is provided with a low-grade fuel channel which is communicated with a combustion chamber, the outside is provided with a medium-grade fuel channel which is communicated with a heating furnace, the outside is provided with an air channel which is communicated with the heating furnace through a heat source heat regenerator, the heating furnace is provided with a fuel gas channel which is communicated with the outside through a heat source heat regenerator, the outside is provided with an air channel which is communicated with a compressor, the compressor is provided with a first air channel which is communicated with an expander through a heat regenerator, the expander is provided with an air channel which is communicated with the outside through an evaporator, the compressor is provided with a second air channel which is communicated with the combustion chamber through a second heat regenerator, the combustion chamber is provided with a fuel gas channel which is communicated with a fuel gas turbine through the heating furnace and a nuclear reactor, and the fuel gas turbine is provided with the outside through the second heat regenerator, the heat regenerator and the evaporator; the condenser is provided with a condensate pipeline which is communicated with the evaporator through a booster pump, then the evaporator is provided with a steam channel which is communicated with a steam turbine, and the steam turbine is also provided with a low-pressure steam channel which is communicated with the condenser; the condenser is also provided with a cooling medium channel which is communicated with the outside, and the gas turbine is connected with the compressor and transmits power to form the multi-energy gas-steam combined cycle power plant.

4. The multi-energy combined cycle power device with the same fuel gas and steam mainly comprises a compressor, an expander, a fuel gas turbine, a combustion chamber, a heating furnace, a heat source regenerator, a nuclear reactor, a regenerator, an evaporator, a steam turbine, a booster pump, a condenser and a second regenerator; the outside has low-grade fuel channel to communicate with combustion chamber, the outside has medium-grade fuel channel to communicate with heating furnace, the outside has air channel to communicate with heating furnace through the heat source regenerator, the heating furnace has gas channel to communicate with outside through the heat source regenerator, the outside has air channel to communicate with compressor, the compressor has first air channel to communicate with expander through the regenerator, the expander has air channel to communicate with outside through the evaporator, the compressor has second air channel to communicate with combustion chamber through the second regenerator, the combustion chamber has gas channel to communicate with gas turbine through heating furnace and nuclear reactor, the gas turbine has gas channel to communicate with outside through the evaporator after the gas channel is communicated with oneself through the second regenerator and regenerator; the condenser is provided with a condensate pipeline which is communicated with the evaporator through a booster pump, then the evaporator is provided with a steam channel which is communicated with a steam turbine, and the steam turbine is also provided with a low-pressure steam channel which is communicated with the condenser; the condenser is also provided with a cooling medium channel which is communicated with the outside, and the gas turbine is connected with the compressor and transmits power to form the multi-energy gas-steam combined cycle power plant.

5. The multi-energy combined cycle power device with the same fuel gas and steam mainly comprises a compressor, an expander, a fuel gas turbine, a combustion chamber, a heating furnace, a heat source regenerator, a nuclear reactor, a regenerator, an evaporator, a steam turbine, a booster pump, a condenser and a second regenerator; the outside has low-grade fuel channel to communicate with combustion chamber, the outside has middle-grade fuel channel to communicate with heating furnace, the outside has air channel to communicate with heating furnace through the heat source regenerator, the heating furnace has gas channel to communicate with outside through the heat source regenerator, the outside has air channel to communicate with compressor, the compressor has first air channel to communicate with expander through the regenerator, the expander has air channel to communicate with outside through the evaporator, the compressor has second air channel to communicate with oneself through the second regenerator, the compressor has air channel to communicate with combustion chamber again after the second air channel is communicated with oneself, the combustion chamber has gas channel to communicate with gas turbine through heating furnace and nuclear reactor, the gas turbine has gas channel to communicate with outside through the second regenerator, regenerator and evaporator; the condenser is provided with a condensate pipeline which is communicated with the evaporator through a booster pump, then the evaporator is provided with a steam channel which is communicated with a steam turbine, and the steam turbine is also provided with a low-pressure steam channel which is communicated with the condenser; the condenser is also provided with a cooling medium channel which is communicated with the outside, and the gas turbine is connected with the compressor and transmits power to form the multi-energy gas-steam combined cycle power plant.

6. The multi-energy combined cycle power device with the same fuel gas and steam mainly comprises a compressor, an expander, a fuel gas turbine, a combustion chamber, a heating furnace, a heat source regenerator, a nuclear reactor, a regenerator, an evaporator, a steam turbine, a booster pump, a condenser and a second regenerator; the outside is provided with a low-grade fuel channel which is communicated with a combustion chamber, the outside is provided with a medium-grade fuel channel which is communicated with a heating furnace, the outside is provided with an air channel which is communicated with the heating furnace through a heat source heat regenerator, the heating furnace is provided with a gas channel which is communicated with the outside through a heat source heat regenerator, the outside is provided with an air channel which is communicated with a compressor, the compressor is provided with a first air channel which is communicated with an expander through a heat regenerator, the expander is provided with an air channel which is communicated with the outside through an evaporator, the compressor is provided with a second air channel which is communicated with the compressor through a second heat regenerator, the compressor is provided with an air channel which is communicated with the combustion chamber, the combustion chamber is provided with a gas channel which is communicated with a gas turbine through the heating furnace and a nuclear reactor, and the gas turbine is provided with a gas channel which is communicated with the compressor through the second heat regenerator and the evaporator; the condenser is provided with a condensate pipeline which is communicated with the evaporator through a booster pump, then the evaporator is provided with a steam channel which is communicated with a steam turbine, and the steam turbine is also provided with a low-pressure steam channel which is communicated with the condenser; the condenser is also provided with a cooling medium channel which is communicated with the outside, and the gas turbine is connected with the compressor and transmits power to form the multi-energy gas-steam combined cycle power plant.

7. The multi-energy co-gas-steam combined cycle power plant is characterized in that a diffuser pipe and a second evaporator are added in any one of the multi-energy co-gas-steam combined cycle power plants in the 1 st to the 6 th, the communication between an air channel of the evaporator and the outside is adjusted to be that the air channel of the evaporator is communicated with the outside through the second evaporator, and the communication between the air channel of the evaporator and the outside is adjusted to be that the air channel of the evaporator is communicated with the outside through the second evaporator; the pressure boosting pump is communicated with the evaporator through a condensate pipeline, and is adjusted to be communicated with the second evaporator through a condensate pipeline, and then the second evaporator is communicated with the evaporator through a wet steam channel through a diffusion pipe, so that the multifunctional gas-steam combined cycle power device with the same function is formed.

8. The multi-energy co-gas-steam combined cycle power plant is characterized in that a second booster pump and a low-temperature heat regenerator are added in any one of the multi-energy co-gas-steam combined cycle power plants in the 1 st to the 7 th, a condenser condensate pipe is communicated with the booster pump and is adjusted to be communicated with the low-temperature heat regenerator through the second booster pump, a steam turbine is additionally provided with a steam extraction channel and is communicated with the low-temperature heat regenerator, and the low-temperature heat regenerator is further communicated with the booster pump through the condensate pipe, so that the multi-energy co-gas-steam combined cycle power plant is formed.

9. The multi-energy co-gas-steam combined cycle power plant is formed by adding an expansion speed increaser and replacing a steam turbine in any multi-energy co-gas-steam combined cycle power plant in the 7 th aspect.

10. The multi-energy co-gas-steam combined cycle power plant is formed by adding an expansion speed increaser to replace a steam turbine, adding a new diffusion pipe and replacing a booster pump in any one of the multi-energy co-gas-steam combined cycle power plants of the 1-8.

11. The multi-energy co-gas-steam combined cycle power plant is formed by adding a solar heat collection system and replacing a heating furnace in any one of the multi-energy co-gas-steam combined cycle power plants of 1-10, eliminating a medium grade fuel channel communicated with the heating furnace from outside, eliminating an air channel communicated with the heating furnace from outside through a heat source regenerator, eliminating a gas channel communicated with the outside through the heat source regenerator from the heating furnace, eliminating the heat source regenerator, and adding a solar heat collection system to replace the heating furnace.

Description of the drawings:

FIG. 1 is a schematic thermodynamic system diagram of a multi-energy co-fuel gas-steam combined cycle power plant according to the present invention.

FIG. 2 is a schematic thermodynamic system diagram of a multi-energy co-fuel gas-steam combined cycle power plant according to the present invention.

FIG. 3 is a schematic thermodynamic system diagram of a multi-energy co-fuel gas-steam combined cycle power plant according to the present invention.

FIG. 4 is a schematic thermodynamic system diagram of a multi-energy co-fuel gas-steam combined cycle power plant according to the present invention, no. 4.

FIG. 5 is a schematic thermodynamic system diagram of a multi-energy co-fuel gas-steam combined cycle power plant according to the present invention.

FIG. 6 is a schematic thermodynamic system diagram of a multi-energy co-fuel gas-steam combined cycle power plant according to the present invention.

FIG. 7 is a schematic thermodynamic system diagram of a multi-energy portable gas-steam combined cycle power plant according to the present invention.

FIG. 8 is a schematic thermodynamic system diagram of a multi-energy portable gas-steam combined cycle power plant according to the present invention.

FIG. 9 is a schematic thermodynamic system diagram of a multi-energy co-fuel gas-steam combined cycle power plant according to the present invention, FIG. 9.

FIG. 10 is a schematic thermodynamic system diagram of a multi-energy portable gas-steam combined cycle power plant according to the present invention.

In the figure, a 1-compressor, a 2-expander, a 3-gas turbine, a 4-combustion chamber, a 5-heating furnace, a 6-heat source regenerator, a 7-nuclear reactor, an 8-regenerator, a 9-evaporator, a 10-turbine, an 11-booster pump, a 12-condenser, a 13-second regenerator, a 14-diffuser pipe, a 15-second evaporator, a 16-second booster pump, a 17-low temperature regenerator and an 18-solar heat collection system; a-expansion speed increaser, B-newly added diffuser pipe.

The low-grade fuel, the medium-grade fuel, and the high-grade fuel are briefly described here:

(1) Low grade fuel: refers to a fuel in which it is difficult for combustion products to form a high-temperature heat source of a relatively high temperature.

(2) High grade fuel: refers to a fuel in which the combustion products are able to form a higher temperature heat source.

(3) For the fuel which needs to provide driving heat load for the circulating working medium through indirect means, the fuel which enables the circulating working medium to reach higher temperature is high-grade fuel, and the fuel which enables the circulating working medium to reach lower temperature is low-grade fuel.

(4) Medium grade fuel: refers to a fuel in which the heat source temperature that the combustion products can form is between the highest temperatures that the combustion products of the high grade fuel and the low grade fuel can form.

(5) For solid fuels, the gaseous species of the combustion products are the core of the heat source and are an important component of the thermodynamic system; the solid substances in the combustion products are not listed separately, and their roles are not stated separately.

(6) In the invention, nuclear energy is converted into heat energy to provide high-temperature heat load for the circulating working medium, and the nuclear fuel is equivalent to high-grade fuel.

The following brief description is given here for nuclear energy and nuclear reactor:

the nuclear reactor in the present application is a heating device for directly or indirectly providing a high-temperature heat load to a working medium by using nuclear energy, and generally comprises two cases:

(1) The nuclear fuel directly provides the circulating working medium flowing through the nuclear reactor with heat energy released by nuclear reaction.

(2) The heat energy released by the nuclear reaction of the nuclear fuel is first supplied to a circuit cooling medium, which is then supplied by natural or forced convection through a heat exchanger to the circulating medium flowing through the nuclear reactor-meaning that both the circuit and the heat exchanger are considered as components of the nuclear reactor 7.

The following brief description is given here about the photo-thermal and solar heat collection system:

(1) Solar heat collection systems, also known as solar heating systems, refer to heating systems that utilize a heat collector to convert solar radiant energy into high temperature heat (simply referred to as photo-thermal), which can be used to provide a driving heat load to a thermodynamic cycle system; it is mainly composed of heat collector and related necessary auxiliary facilities.

(2) Types of solar energy collection systems include, but are not limited to: ① The concentrating solar heat collection system mainly comprises a groove type system, a tower type system and a butterfly type system at present; ② The non-concentrating solar heat collecting system has solar pond, solar chimney and other systems.

(3) There are two main types of heat supply modes of solar heat collection systems at present: ① The high-temperature heat energy converted by solar energy is directly supplied to a heated medium flowing through a solar heat collection system; ② The high-temperature heat energy converted from solar energy is firstly supplied to the working medium of the self-circulation loop, and then the working medium is supplied to the heated medium flowing through the solar heat collection system through the heat exchanger.

The brief description of the drawings and related expressions of the subject matter is as follows:

drawing with respect to the drawings: taking fig. 1 as an example, for simplifying drawing, the "expander 2 and air channel are communicated with the outside through the evaporator 9" and the "gas turbine 3 and gas channel are communicated with the outside through the regenerator 8 and the evaporator 9" are shown in a drawing mode that the air channel and the gas channel share one channel in fig. 1; it is also stated that it is an alternative to combine air and fuel gas before entering the evaporator 9 or to combine fuel gas after flowing through the evaporator 9 separately.

The specific embodiment is as follows:

It should be noted that the description of the structure and the flow is not repeated if necessary, and the obvious flow is not described. The invention is described in detail below with reference to the drawings and examples.

The multi-energy co-fuel gas-steam combined cycle power plant shown in fig. 1 is realized by:

(1) Structurally, it mainly comprises a compressor, an expander, a gas turbine, a combustion chamber, a heating furnace, a heat source regenerator, a nuclear reactor, a regenerator, an evaporator, a steam turbine, a booster pump and a condenser; the outside is provided with a low-grade fuel channel which is communicated with the combustion chamber 4, the outside is provided with a medium-grade fuel channel which is communicated with the heating furnace 5, the outside is provided with an air channel which is communicated with the heating furnace 5 through the heat source regenerator 6, the heating furnace 5 is provided with a gas channel which is communicated with the outside through the heat source regenerator 6, the outside is provided with an air channel which is communicated with the compressor 1, the compressor 1 is provided with a first air channel which is communicated with the expander 2 through the regenerator 8, the expander 2 is provided with an air channel which is communicated with the outside through the evaporator 9, the compressor 1 is provided with a second air channel which is communicated with the combustion chamber 4, the combustion chamber 4 is provided with a gas channel which is communicated with the gas turbine 3 through the heating furnace 5 and the nuclear reactor 7, and the gas turbine 3 is provided with the outside through the regenerator 8 and the evaporator 9; the condenser 12 is provided with a condensate pipeline which is communicated with the evaporator 9 through a booster pump 11, the evaporator 9 is further provided with a steam channel which is communicated with the steam turbine 10, and the steam turbine 10 is also provided with a low-pressure steam channel which is communicated with the condenser 12; the condenser 12 is also provided with a cooling medium passage communicating with the outside, and the gas turbine 3 is connected to the compressor 1 and transmits power.

(2) In the flow, the external air enters the compressor 1 to be boosted and heated to a certain extent and then is divided into two paths, wherein the first path is subjected to heat absorption and heating through the heat regenerator 8, is subjected to depressurization and work through the expander 2 and is discharged outwards after heat release and cooling through the evaporator 9, and the second path is subjected to continuous boosting and heating and then enters the combustion chamber 4 to participate in combustion; the external low-grade fuel enters the combustion chamber 4, the fuel and the compressed air are mixed in the combustion chamber 4 and combusted to generate initial fuel gas with higher temperature, and the initial fuel gas is gradually absorbed in heat and increased in temperature through the heating furnace 5 and the nuclear reactor 7 and then is provided for the gas turbine 3; the external medium grade fuel enters the heating furnace 5, the external air enters the heating furnace 5 after absorbing heat and raising temperature through the heat source regenerator 6, the fuel and the air are mixed and combusted in the heating furnace 5 to generate high temperature fuel gas, the high temperature fuel gas releases heat from the initial fuel gas flowing through the high temperature fuel gas, and then the high temperature fuel gas releases heat and lowers the temperature through the heat source regenerator 6 and is discharged to the outside; the initial gas after temperature rise is subjected to depressurization and work by the gas turbine 3, gradually releases heat and reduces temperature by the heat regenerator 8 and the evaporator 9, and is discharged outwards; the condensate discharged by the condenser 12 is boosted by the booster pump 11, is heated and vaporized by the heat absorption of the evaporator 9, is decompressed and works by the steam turbine 10, and then enters the condenser 12 to be cooled and condensed; the low-grade fuel provides a driving heat load through the combustion chamber 4, the medium-grade fuel provides a driving heat load through the heating furnace 5, the nuclear fuel provides a driving heat load through the nuclear reactor 7, the cooling medium takes away the low-temperature heat load through the condenser 12, and the air and the fuel gas take away the discharging heat load through the inlet and outlet heating furnace 5 and the inlet and outlet system respectively; the work output by the expander 2, the gas turbine 3 and the steam turbine 10 is provided for the compressor 1 and external power, or the work output by the expander 2, the gas turbine 3 and the steam turbine 10 is provided for the compressor 1, the booster pump 11 and external power, so that the multifunctional combined cycle power plant with the gas and the steam is formed.

The multi-energy co-fuel gas-steam combined cycle power plant shown in fig. 2 is realized by:

(1) Structurally, it mainly comprises a compressor, an expander, a gas turbine, a combustion chamber, a heating furnace, a heat source regenerator, a nuclear reactor, a regenerator, an evaporator, a steam turbine, a booster pump and a condenser; the outside has low-grade fuel channel to communicate with combustion chamber 4, the outside has middle-grade fuel channel to communicate with heating furnace 5, the outside has air channel to communicate with heating furnace 5 through the heat source regenerator 6, heating furnace 5 has gas channel to communicate with outside through the heat source regenerator 6, the outside has air channel to communicate with compressor 1, the compressor 1 has first air channel to communicate with expander 2 through the regenerator 8, expander 2 has air channel to communicate with outside through the evaporator 9, the compressor 1 has second air channel to communicate with combustion chamber 4, combustion chamber 4 has gas channel to communicate with gas turbine 3 through heating furnace 5 and nuclear reactor 7, gas turbine 3 has gas channel to communicate with outside through evaporator 9 after the gas turbine 3 has gas channel to communicate with oneself through the regenerator 8; the condenser 12 is provided with a condensate pipeline which is communicated with the evaporator 9 through a booster pump 11, the evaporator 9 is further provided with a steam channel which is communicated with the steam turbine 10, and the steam turbine 10 is also provided with a low-pressure steam channel which is communicated with the condenser 12; the condenser 12 is also provided with a cooling medium passage communicating with the outside, and the gas turbine 3 is connected to the compressor 1 and transmits power.

(2) In terms of flow, compared with the multi-energy portable gas-steam combined cycle power plant shown in fig. 1, the difference is that: the high-temperature gas discharged by the nuclear reactor 7 enters the gas turbine 3 to perform depressurization and work, flows through the regenerator 8 to release heat and cool to a certain extent, then enters the gas turbine 3 to continue depressurization and work, flows through the evaporator 9 to release heat and cool and is discharged to the outside, and the multifunctional combined cycle power device with the same gas and steam is formed.

The multi-energy co-fuel gas-steam combined cycle power plant shown in fig. 3 is realized by:

(1) Structurally, the device mainly comprises a compressor, an expander, a gas turbine, a combustion chamber, a heating furnace, a heat source regenerator, a nuclear reactor, a regenerator, an evaporator, a steam turbine, a booster pump, a condenser and a second regenerator; the outside is provided with a low-grade fuel channel which is communicated with the combustion chamber 4, the outside is provided with a medium-grade fuel channel which is communicated with the heating furnace 5, the outside is provided with an air channel which is communicated with the heating furnace 5 through the heat source heat regenerator 6, the heating furnace 5 is provided with a gas channel which is communicated with the outside through the heat source heat regenerator 6, the outside is provided with an air channel which is communicated with the compressor 1, the compressor 1 is provided with a first air channel which is communicated with the expander 2 through the heat regenerator 8, the expander 2 is provided with an air channel which is communicated with the outside through the evaporator 9, the compressor 1 is provided with a second air channel which is communicated with the combustion chamber 4 through the second heat regenerator 13, the combustion chamber 4 is provided with a gas channel which is communicated with the gas turbine 3 through the heating furnace 5 and the nuclear reactor 7, and the gas turbine 3 is provided with the outside through the second heat regenerator 13, the heat regenerator 8 and the evaporator 9; the condenser 12 is provided with a condensate pipeline which is communicated with the evaporator 9 through a booster pump 11, the evaporator 9 is further provided with a steam channel which is communicated with the steam turbine 10, and the steam turbine 10 is also provided with a low-pressure steam channel which is communicated with the condenser 12; the condenser 12 is also provided with a cooling medium passage communicating with the outside, and the gas turbine 3 is connected to the compressor 1 and transmits power.

(2) In terms of flow, compared with the multi-energy portable gas-steam combined cycle power plant shown in fig. 1, the difference is that: the second path of air discharged by the compressor 1 flows through the second heat regenerator 13 to absorb heat and raise temperature, and then enters the combustion chamber 4 to participate in combustion; the gas discharged by the gas turbine 3 is gradually released and cooled through the second heat regenerator 13, the heat regenerator 8 and the evaporator 9, and then is discharged to the outside, so that the multifunctional portable gas-steam combined cycle power device is formed.

The multi-energy co-fuel gas-steam combined cycle power plant shown in fig. 4 is implemented as follows:

(1) Structurally, the device mainly comprises a compressor, an expander, a gas turbine, a combustion chamber, a heating furnace, a heat source regenerator, a nuclear reactor, a regenerator, an evaporator, a steam turbine, a booster pump, a condenser and a second regenerator; the outside is provided with a low-grade fuel channel which is communicated with the combustion chamber 4, the outside is provided with a medium-grade fuel channel which is communicated with the heating furnace 5, the outside is provided with an air channel which is communicated with the heating furnace 5 through the heat source regenerator 6, the heating furnace 5 is provided with a gas channel which is communicated with the outside through the heat source regenerator 6, the outside is provided with an air channel which is communicated with the compressor 1, the compressor 1 is provided with a first air channel which is communicated with the expander 2 through the regenerator 8, the expander 2 is provided with an air channel which is communicated with the outside through the evaporator 9, the compressor 1 is provided with a second air channel which is communicated with the combustion chamber 4 through the second regenerator 13, the combustion chamber 4 is provided with a gas channel which is communicated with the gas turbine 3 through the heating furnace 5 and the nuclear reactor 7, and the gas turbine 3 is provided with a gas channel which is communicated with the outside through the evaporator 9 after the second regenerator 13 and the regenerator 8 are communicated with the gas turbine 3; the condenser 12 is provided with a condensate pipeline which is communicated with the evaporator 9 through a booster pump 11, the evaporator 9 is further provided with a steam channel which is communicated with the steam turbine 10, and the steam turbine 10 is also provided with a low-pressure steam channel which is communicated with the condenser 12; the condenser 12 is also provided with a cooling medium passage communicating with the outside, and the gas turbine 3 is connected to the compressor 1 and transmits power.

(2) In terms of flow, compared with the multi-energy portable gas-steam combined cycle power plant shown in fig. 1, the difference is that: the second path of air discharged by the compressor 1 flows through the second heat regenerator 13 to absorb heat and raise temperature, and then enters the combustion chamber 4 to participate in combustion; the high-temperature gas discharged by the nuclear reactor 7 enters the gas turbine 3 to perform depressurization and work, flows through the second heat regenerator 13 and the heat regenerator 8 to gradually release heat and cool to a certain extent, then enters the gas turbine 3 to continue depressurization and work, and then flows through the evaporator 9 to release heat and cool and discharge to the outside to form the multifunctional portable gas-steam combined cycle power device.

The multi-energy co-fuel gas-steam combined cycle power plant shown in fig. 5 is implemented as follows:

(1) Structurally, the device mainly comprises a compressor, an expander, a gas turbine, a combustion chamber, a heating furnace, a heat source regenerator, a nuclear reactor, a regenerator, an evaporator, a steam turbine, a booster pump, a condenser and a second regenerator; the outside is provided with a low-grade fuel channel which is communicated with the combustion chamber 4, the outside is provided with a medium-grade fuel channel which is communicated with the heating furnace 5, the outside is provided with an air channel which is communicated with the heating furnace 5 through the heat source heat regenerator 6, the heating furnace 5 is provided with a fuel gas channel which is communicated with the outside through the heat source heat regenerator 6, the outside is provided with an air channel which is communicated with the compressor 1, the compressor 1 is provided with a first air channel which is communicated with the expander 2 through the heat regenerator 8, the expander 2 is provided with an air channel which is communicated with the outside through the evaporator 9, the compressor 1 is provided with a second air channel which is communicated with the compressor 1 after being communicated with the compressor 1 through the second heat regenerator 13, the combustion chamber 4 is provided with a fuel gas channel which is communicated with the gas turbine 3 through the heating furnace 5 and the nuclear reactor 7, and the gas turbine 3 is provided with a fuel gas channel which is communicated with the outside through the second heat regenerator 13, the heat regenerator 8 and the evaporator 9; the condenser 12 is provided with a condensate pipeline which is communicated with the evaporator 9 through a booster pump 11, the evaporator 9 is further provided with a steam channel which is communicated with the steam turbine 10, and the steam turbine 10 is also provided with a low-pressure steam channel which is communicated with the condenser 12; the condenser 12 is also provided with a cooling medium passage communicating with the outside, and the gas turbine 3 is connected to the compressor 1 and transmits power.

(2) In terms of flow, compared with the multi-energy portable gas-steam combined cycle power plant shown in fig. 1, the difference is that: the external air enters the compressor 1 to be boosted and heated to a certain extent and then is divided into two paths, wherein the first path flows through the heat absorption and heating of the heat regenerator 8 and then enters the expander 2 to be decompressed and acted, and the second path continuously boosts and heats to a certain extent and then enters the second heat regenerator 13 to absorb heat and heat; the air discharged by the second heat regenerator 13 enters the compressor 1 to continuously boost and heat, and then enters the combustion chamber 4 to participate in combustion; the gas discharged by the gas turbine 3 is gradually released and cooled through the second heat regenerator 13, the heat regenerator 8 and the evaporator 9, and then is discharged outwards, so that the multifunctional portable gas-steam combined cycle power device is formed.

The multi-energy co-fuel gas-steam combined cycle power plant shown in fig. 6 is implemented as follows:

(1) Structurally, the device mainly comprises a compressor, an expander, a gas turbine, a combustion chamber, a heating furnace, a heat source regenerator, a nuclear reactor, a regenerator, an evaporator, a steam turbine, a booster pump, a condenser and a second regenerator; the outside is provided with a low-grade fuel channel which is communicated with the combustion chamber 4, the outside is provided with a medium-grade fuel channel which is communicated with the heating furnace 5, the outside is provided with an air channel which is communicated with the heating furnace 5 through the heat source regenerator 6, the heating furnace 5 is provided with a gas channel which is communicated with the outside through the heat source regenerator 6, the outside is provided with an air channel which is communicated with the compressor 1, the compressor 1 is provided with a first air channel which is communicated with the expander 2 through the regenerator 8, the expander 2 is provided with an air channel which is communicated with the outside through the evaporator 9, the compressor 1 is provided with a second air channel which is communicated with the compressor 1 through the second regenerator 13, the air channel is communicated with the combustion chamber 4, the combustion chamber 4 is provided with a gas channel which is communicated with the gas turbine 3 through the heating furnace 5 and the nuclear reactor 7, and the gas turbine 3 is provided with a gas channel which is communicated with the outside through the regenerator 8 and the evaporator 9; the condenser 12 is provided with a condensate pipeline which is communicated with the evaporator 9 through a booster pump 11, the evaporator 9 is further provided with a steam channel which is communicated with the steam turbine 10, and the steam turbine 10 is also provided with a low-pressure steam channel which is communicated with the condenser 12; the condenser 12 is also provided with a cooling medium passage communicating with the outside, and the gas turbine 3 is connected to the compressor 1 and transmits power.

(2) In terms of flow, compared with the multi-energy portable gas-steam combined cycle power plant shown in fig. 1, the difference is that: the external air enters the compressor 1 to be boosted and heated to a certain extent and then is divided into two paths, wherein the first path flows through the heat absorption and heating of the heat regenerator 8 and then enters the expander 2 to be decompressed and acted, and the second path continuously boosts and heats to a certain extent and then enters the second heat regenerator 13 to absorb heat and heat; the air discharged by the second heat regenerator 13 enters the compressor 1 to continuously boost and heat, and then enters the combustion chamber 4 to participate in combustion; the high-temperature gas discharged by the nuclear reactor 7 enters the gas turbine 3 to perform depressurization and work, flows through the second heat regenerator 13 to release heat and cool to a certain extent, then enters the gas turbine 3 to continue depressurization and work, and then flows through the heat regenerator 8 and the evaporator 9 to release heat and cool gradually and discharge the heat to the outside, so that the multifunctional portable gas-steam combined cycle power device is formed.

The multi-energy co-fuel gas-steam combined cycle power plant shown in fig. 7 is implemented as follows:

(1) In the structure, in the multi-energy gas-steam combined cycle power plant shown in fig. 1, a diffusion pipe and a second evaporator are added, the air channel of the evaporator 9 is communicated with the outside through the second evaporator 15, and the gas channel of the evaporator 9 is communicated with the outside through the second evaporator 15; the pressure-boosting pump 11 is communicated with the evaporator 9 through a condensate pipeline, so that after the pressure-boosting pump 11 is communicated with the second evaporator 15 through the condensate pipeline, the second evaporator 15 is communicated with the evaporator 9 through a diffusion pipe 14 through a wet steam channel.

(2) In terms of flow, compared with the multi-energy portable gas-steam combined cycle power plant shown in fig. 1, the difference is that: the air discharged from the expander 2 is gradually released and cooled through the evaporator 9 and the second evaporator 15, and then discharged to the outside; the fuel gas discharged by the heat regenerator 8 flows through the evaporator 9 and the second evaporator 15 to release heat and cool gradually, and then is discharged to the outside; condensate discharged by the condenser 12 is boosted by the booster pump 11, is subjected to heat absorption, temperature rise, partial vaporization and speed increase by the second evaporator 15, is subjected to speed reduction, pressure boosting by the diffuser pipe 14, and then enters the evaporator 9 to be subjected to heat absorption and vaporization, so that the multifunctional gas-steam combined cycle power plant with the same function is formed.

The multi-energy co-fuel gas-steam combined cycle power plant shown in fig. 8 is implemented as follows:

(1) In the structure, in the multi-energy gas-steam combined cycle power plant shown in fig. 1, a second booster pump and a low-temperature heat regenerator are added, a condensate pipe of the condenser 12 is communicated with the booster pump 11, the condensate pipe of the condenser 12 is communicated with the low-temperature heat regenerator 17 through the second booster pump 16, a steam turbine 10 is additionally provided with a steam extraction channel which is communicated with the low-temperature heat regenerator 17, and the low-temperature heat regenerator 17 is further communicated with the booster pump 11 through the condensate pipe.

(2) In terms of flow, compared with the multi-energy portable gas-steam combined cycle power plant shown in fig. 1, the difference is that: the condensate discharged by the condenser 12 flows through the second booster pump 16 to be boosted and then enters the low-temperature regenerator 17 to be mixed with the extracted steam from the steam turbine 10, absorbs heat and heats up, and the extracted steam is released to form condensate; condensate of the low-temperature heat regenerator 17 is boosted by the booster pump 11, is subjected to heat absorption, temperature rise and vaporization by the evaporator 9, and then enters the steam turbine 10 to be subjected to pressure reduction and work; the steam entering the steam turbine 10 is decompressed and acted, and is divided into two paths after reaching a certain degree, wherein the first path is provided for the low-temperature heat regenerator 17, and the second path is continuously decompressed and acted, enters the condenser 12 to release heat and condense, so that the multifunctional gas-steam combined cycle power plant with the same function is formed.

The multi-energy co-fuel gas-steam combined cycle power plant shown in fig. 9 is implemented as follows:

(1) Structurally, in the multi-energy gas-steam combined cycle power plant shown in fig. 1, an expansion speed increaser a is added to replace a steam turbine 10, and a new diffuser pipe B is added to replace a booster pump 11.

(2) In terms of flow, compared with the multi-energy portable gas-steam combined cycle power plant shown in fig. 1, the difference is that: the condensate of the condenser 12 flows through a newly added diffuser pipe B to be reduced in speed and increased in pressure, flows through an evaporator 9 to absorb heat and evaporate, flows through an expansion speed increaser A to be reduced in pressure and increased in speed, and then enters the condenser 12 to be cooled and condensed; the work output by the expander 2, the gas turbine 3 and the expansion speed increaser A is provided for the compressor 1 and external power to form a multifunctional portable gas-steam combined cycle power device.

The multi-energy co-fuel gas-steam combined cycle power plant shown in fig. 10 is implemented as follows:

In the multi-energy combined cycle power plant with fuel gas and steam shown in fig. 1, a middle grade fuel channel communicated with the heating furnace 5 from outside is omitted, an air channel communicated with the heating furnace 5 from outside through the heat source regenerator 6 is omitted, a fuel gas channel communicated with the heating furnace 5 from outside through the heat source regenerator 6 is omitted, a solar heat collecting system 18 is added and the heating furnace 5 is replaced; solar energy is provided to drive a heat load through the solar heat collection system 18 to form a multi-energy co-fuel gas-steam combined cycle power plant.

The invention has the effect that the technology can realize, namely the multifunctional gas-steam combined cycle power plant with the same function has the following effects and advantages:

(1) The nuclear energy, the medium grade fuel and the low grade fuel or the nuclear energy, the photo-thermal and the low grade fuel share the integrated thermal power system, so that the performance price ratio is high.

(2) The utilization degree of the temperature difference in the back heating link between the gases is high, and the heat change work efficiency is improved; and in the regenerative link between the gas working medium and the liquid working medium, the flow rate of the gas working medium is large, the temperature change interval is relatively narrow, the irreversible loss of the temperature difference is reduced, and the heat-changing work efficiency is improved.

(3) The driving energy provides driving heat load links, the temperature difference loss of the section is small, and the thermodynamic perfection is high.

(4) The low-grade fuel plays a larger role by means of the medium-grade fuel, so that the utilization value of converting the medium-grade fuel into mechanical energy is improved; or the low-grade fuel plays a larger role by means of photo-heat, and the utilization value of the photo-heat converted into mechanical energy is improved.

(5) The medium grade fuel plays a larger role by means of nuclear energy, or the photo-thermal plays a larger role by means of nuclear energy, so that the utilization value of nuclear energy converted into mechanical energy is improved.

(6) The nuclear energy, the medium grade fuel and the low grade fuel or the nuclear energy, the photo-thermal and the low grade fuel can be carried across types and grades, the temperature difference loss is small, and the thermodynamic perfection is high.

(7) The driving heat load realizes graded utilization, the irreversible loss of the temperature difference of the system is small, and the heat change work efficiency and the thermodynamic perfection are high.

(8) The low-grade fuel can be used for or is beneficial to reducing the top circulation boosting ratio, improving the circulation working medium flow, and being beneficial to constructing a large-load multi-energy co-gas-steam combined cycle power device.

(9) By utilizing the characteristics of working media, the temperature difference utilization level in the heat transfer process is improved by adopting a simple technical means, and the heat efficiency is improved.

(10) And a plurality of heat regeneration technical means are provided, so that the coordination of the device in the aspects of power, thermal efficiency, step-up ratio and the like is effectively improved.

(11) The flow is reasonable, the structure is simple, and the scheme is rich; is beneficial to improving the energy utilization level and expanding the application range of the multifunctional gas-steam combined cycle power plant.

Claims (11)

1. The multifunctional gas-steam combined cycle power plant mainly comprises a compressor, an expander, a gas turbine, a combustion chamber, a heating furnace, a heat source regenerator, a nuclear reactor, a regenerator, an evaporator, a steam turbine, a booster pump and a condenser; the outside is provided with a low-grade fuel channel which is communicated with a combustion chamber (4), the outside is provided with a medium-grade fuel channel which is communicated with a heating furnace (5), the outside is provided with an air channel which is communicated with the heating furnace (5) through a heat source heat regenerator (6), the heating furnace (5) is provided with a fuel gas channel which is communicated with the outside through the heat source heat regenerator (6), the outside is provided with an air channel which is communicated with a compressor (1), the compressor (1) is provided with a first air channel which is communicated with an expander (2) through a heat regenerator (8), the expander (2) is provided with an air channel which is communicated with the outside through an evaporator (9), the compressor (1) is provided with a second air channel which is communicated with the combustion chamber (4), the combustion chamber (4) is provided with a fuel gas channel which is communicated with a fuel gas turbine (3) through the heating furnace (5) and a nuclear reactor (7), and the fuel gas turbine (3) is provided with a fuel gas channel which is provided with the heat regenerator (8) and the evaporator (9); the condenser (12) is provided with a condensate pipeline which is communicated with the evaporator (9) through a booster pump (11), the evaporator (9) is further provided with a steam channel which is communicated with the steam turbine (10), and the steam turbine (10) is also provided with a low-pressure steam channel which is communicated with the condenser (12); the condenser (12) is also communicated with the outside through a cooling medium channel, and the gas turbine (3) is connected with the compressor (1) and transmits power to form a multifunctional gas-steam combined cycle power plant.

2. The multifunctional gas-steam combined cycle power plant mainly comprises a compressor, an expander, a gas turbine, a combustion chamber, a heating furnace, a heat source regenerator, a nuclear reactor, a regenerator, an evaporator, a steam turbine, a booster pump and a condenser; the outside is provided with a low-grade fuel channel which is communicated with a combustion chamber (4), the outside is provided with a medium-grade fuel channel which is communicated with a heating furnace (5), the outside is provided with an air channel which is communicated with the heating furnace (5) through a heat source heat regenerator (6), the heating furnace (5) is provided with a gas channel which is communicated with the outside through the heat source heat regenerator (6), the outside is provided with an air channel which is communicated with a compressor (1), the compressor (1) is provided with a first air channel which is communicated with an expander (2) through a heat regenerator (8), the expander (2) is provided with an air channel which is communicated with the outside through an evaporator (9), the compressor (1) is provided with a second air channel which is communicated with the combustion chamber (4), the combustion chamber (4) is provided with a gas channel which is communicated with a gas turbine (3) through the heating furnace (5) and a nuclear reactor (7), and the gas turbine (3) is provided with a gas channel which is communicated with the outside through the evaporator (9) after the gas channel is provided with the heat regenerator (8); the condenser (12) is provided with a condensate pipeline which is communicated with the evaporator (9) through a booster pump (11), the evaporator (9) is further provided with a steam channel which is communicated with the steam turbine (10), and the steam turbine (10) is also provided with a low-pressure steam channel which is communicated with the condenser (12); the condenser (12) is also communicated with the outside through a cooling medium channel, and the gas turbine (3) is connected with the compressor (1) and transmits power to form a multifunctional gas-steam combined cycle power plant.

3. The multi-energy combined cycle power device with the same fuel gas and steam mainly comprises a compressor, an expander, a fuel gas turbine, a combustion chamber, a heating furnace, a heat source regenerator, a nuclear reactor, a regenerator, an evaporator, a steam turbine, a booster pump, a condenser and a second regenerator; the outside is provided with a low-grade fuel channel which is communicated with a combustion chamber (4), the outside is provided with a medium-grade fuel channel which is communicated with a heating furnace (5), the outside is provided with an air channel which is communicated with the heating furnace (5) through a heat source heat regenerator (6), the heating furnace (5) is provided with a fuel gas channel which is communicated with the outside through the heat source heat regenerator (6), the outside is provided with an air channel which is communicated with a compressor (1), the compressor (1) is provided with a first air channel which is communicated with an expander (2) through a heat regenerator (8), the expander (2) is provided with an air channel which is communicated with the outside through an evaporator (9), the compressor (1) is provided with a second air channel which is communicated with the combustion chamber (4) through a second heat regenerator (13), the combustion chamber (4) is provided with a fuel gas channel which is communicated with a fuel gas turbine (3) through the heating furnace (5) and a nuclear reactor (7), and the fuel gas channel is provided with the outside through a second heat regenerator (8) and the evaporator (9); the condenser (12) is provided with a condensate pipeline which is communicated with the evaporator (9) through a booster pump (11), the evaporator (9) is further provided with a steam channel which is communicated with the steam turbine (10), and the steam turbine (10) is also provided with a low-pressure steam channel which is communicated with the condenser (12); the condenser (12) is also communicated with the outside through a cooling medium channel, and the gas turbine (3) is connected with the compressor (1) and transmits power to form a multifunctional gas-steam combined cycle power plant.

4. The multi-energy combined cycle power device with the same fuel gas and steam mainly comprises a compressor, an expander, a fuel gas turbine, a combustion chamber, a heating furnace, a heat source regenerator, a nuclear reactor, a regenerator, an evaporator, a steam turbine, a booster pump, a condenser and a second regenerator; the outside is provided with a low-grade fuel channel which is communicated with a combustion chamber (4), the outside is provided with a medium-grade fuel channel which is communicated with a heating furnace (5), the outside is provided with an air channel which is communicated with the heating furnace (5) through a heat source heat regenerator (6), the heating furnace (5) is provided with a gas channel which is communicated with the outside through the heat source heat regenerator (6), the outside is provided with an air channel which is communicated with a compressor (1), the compressor (1) is provided with a first air channel which is communicated with an expander (2) through a heat regenerator (8), the expander (2) is provided with an air channel which is communicated with the outside through an evaporator (9), the compressor (1) is provided with a second air channel which is communicated with the combustion chamber (4) through a second heat regenerator (13), the combustion chamber (4) is provided with a gas channel which is communicated with a gas turbine (3) through the heating furnace (5) and a nuclear reactor (7), and the gas channel which is provided with the gas turbine (3) is provided with the evaporator (9) after the gas channel is communicated with the compressor (1) through the second heat regenerator (8); the condenser (12) is provided with a condensate pipeline which is communicated with the evaporator (9) through a booster pump (11), the evaporator (9) is further provided with a steam channel which is communicated with the steam turbine (10), and the steam turbine (10) is also provided with a low-pressure steam channel which is communicated with the condenser (12); the condenser (12) is also communicated with the outside through a cooling medium channel, and the gas turbine (3) is connected with the compressor (1) and transmits power to form a multifunctional gas-steam combined cycle power plant.

5. The multi-energy combined cycle power device with the same fuel gas and steam mainly comprises a compressor, an expander, a fuel gas turbine, a combustion chamber, a heating furnace, a heat source regenerator, a nuclear reactor, a regenerator, an evaporator, a steam turbine, a booster pump, a condenser and a second regenerator; the outside is provided with a low-grade fuel channel which is communicated with a combustion chamber (4), the outside is provided with a medium-grade fuel channel which is communicated with a heating furnace (5), the outside is provided with an air channel which is communicated with the heating furnace (5) through a heat source heat regenerator (6), the heating furnace (5) is provided with a fuel gas channel which is communicated with the outside through the heat source heat regenerator (6), the outside is provided with an air channel which is communicated with a compressor (1), the compressor (1) is provided with a first air channel which is communicated with an expander (2) through a heat regenerator (8), the expander (2) is provided with an air channel which is communicated with the outside through an evaporator (9), the compressor (1) is provided with an air channel which is communicated with the combustion chamber (4) after the compressor (1) is provided with the air channel which is communicated with the heating furnace (13), the combustion chamber (4) is provided with a fuel gas channel which is communicated with a gas turbine (3) through the heating furnace (5) and a nuclear reactor (7), and the gas turbine (3) is provided with a fuel gas channel which is provided with the outside through a second heat regenerator (13), the evaporator (8) and the evaporator (9); the condenser (12) is provided with a condensate pipeline which is communicated with the evaporator (9) through a booster pump (11), the evaporator (9) is further provided with a steam channel which is communicated with the steam turbine (10), and the steam turbine (10) is also provided with a low-pressure steam channel which is communicated with the condenser (12); the condenser (12) is also communicated with the outside through a cooling medium channel, and the gas turbine (3) is connected with the compressor (1) and transmits power to form a multifunctional gas-steam combined cycle power plant.

6. The multi-energy combined cycle power device with the same fuel gas and steam mainly comprises a compressor, an expander, a fuel gas turbine, a combustion chamber, a heating furnace, a heat source regenerator, a nuclear reactor, a regenerator, an evaporator, a steam turbine, a booster pump, a condenser and a second regenerator; the outside is provided with a low-grade fuel channel which is communicated with a combustion chamber (4), the outside is provided with a medium-grade fuel channel which is communicated with a heating furnace (5), the outside is provided with an air channel which is communicated with the heating furnace (5) through a heat source heat regenerator (6), the heating furnace (5) is provided with a gas channel which is communicated with the outside through the heat source heat regenerator (6), the outside is provided with an air channel which is communicated with a compressor (1), the compressor (1) is provided with a first air channel which is communicated with an expander (2) through a heat regenerator (8), the expander (2) is provided with an air channel which is communicated with the outside through an evaporator (9), the compressor (1) is provided with an air channel which is communicated with the combustion chamber (4) after the compressor (1) is communicated with the compressor (1) through a second heat regenerator (13), the combustion chamber (4) is provided with a gas turbine (3) through the heating furnace (5) and the gas regenerator (7), and the gas turbine (3) is provided with a gas channel which is provided with the heat regenerator (8) and the evaporator (9) after the gas channel is provided with the second heat regenerator (13) is communicated with the gas turbine; the condenser (12) is provided with a condensate pipeline which is communicated with the evaporator (9) through a booster pump (11), the evaporator (9) is further provided with a steam channel which is communicated with the steam turbine (10), and the steam turbine (10) is also provided with a low-pressure steam channel which is communicated with the condenser (12); the condenser (12) is also communicated with the outside through a cooling medium channel, and the gas turbine (3) is connected with the compressor (1) and transmits power to form a multifunctional gas-steam combined cycle power plant.

7. In the multi-energy co-gas-steam combined cycle power plant, a diffuser pipe and a second evaporator are added in any one of the multi-energy co-gas-steam combined cycle power plants in claims 1-6, the air channel of the evaporator (9) is communicated with the outside and is adjusted to be communicated with the outside through the second evaporator (15), and the gas channel of the evaporator (9) is communicated with the outside and is adjusted to be communicated with the outside through the second evaporator (15); the condensate pipeline of the booster pump (11) is communicated with the evaporator (9) and is adjusted to be that after the condensate pipeline of the booster pump (11) is communicated with the second evaporator (15), the second evaporator (15) is further communicated with the evaporator (9) through the diffusion pipe (14) so as to form the multifunctional gas-steam combined cycle power device.

8. A multi-energy co-gas-steam combined cycle power plant is characterized in that a second booster pump and a low-temperature heat regenerator are added in any one of the multi-energy co-gas-steam combined cycle power plants in claims 1-7, a condensate pipe of a condenser (12) is communicated with a booster pump (11) and is adjusted to be communicated with a low-temperature heat regenerator (17) through a second booster pump (16), a steam turbine (10) is additionally provided with a steam extraction channel which is communicated with the low-temperature heat regenerator (17), and the low-temperature heat regenerator (17) is further communicated with the booster pump (11) through a condensate pipe, so that the multi-energy co-gas-steam combined cycle power plant is formed.

9. The multi-energy co-gas-steam combined cycle power plant is formed by adding an expansion speed increaser (A) and replacing a steam turbine (10) in any multi-energy co-gas-steam combined cycle power plant of claim 7.

10. The multi-energy co-gas-steam combined cycle power plant is characterized in that an expansion speed increaser (A) is added to replace a steam turbine (10), a new diffusion pipe (B) is added to replace a booster pump (11) in any one of the multi-energy co-gas-steam combined cycle power plants in claims 1-8, so that the multi-energy co-gas-steam combined cycle power plant is formed.

11. The multi-energy co-gas-steam combined cycle power plant is formed by eliminating a middle-grade fuel channel which is externally communicated with a heating furnace (5), eliminating an air channel which is externally communicated with the heating furnace (5) through a heat source regenerator (6), eliminating a gas channel which is externally communicated with the heating furnace (5) through the heat source regenerator (6), eliminating the heat source regenerator (6), adding a solar heat collection system (18) and replacing the heating furnace (5) in any one of the multi-energy co-gas-steam combined cycle power plants in claims 1-10.