CN107367083B - Triple-generation magnetic suspension water chilling unit - Google Patents
Triple-generation magnetic suspension water chilling unit Download PDFInfo
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- CN107367083B CN107367083B CN201710756947.9A CN201710756947A CN107367083B CN 107367083 B CN107367083 B CN 107367083B CN 201710756947 A CN201710756947 A CN 201710756947A CN 107367083 B CN107367083 B CN 107367083B
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- 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
- F25B6/00—Compression machines, plants or systems, with several condenser circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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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
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
- F01K27/02—Plants modified to use their waste heat, other than that of exhaust, e.g. engine-friction heat
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- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/14—Power generation using energy from the expansion of the refrigerant
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention relates to a triple-generation magnetic suspension water chilling unit, wherein a working medium outlet of a steam generator is communicated with an inlet of a steam turbine through a pipeline, the outlet of the steam turbine is communicated with a first working medium inlet of an evaporation condenser through a pipeline, the first working medium outlet of the evaporation condenser is communicated with an inlet of a water pump through a pipeline, an outlet of the water pump is communicated with the working medium inlet of the steam generator through a pipeline, and the steam turbine is connected with a first generator; the outlet of the magnetic suspension compressor is communicated with the inlet of the second condenser through a pipeline, the outlet of the second condenser is communicated with the inlet of the electronic expansion valve through a pipeline, the outlet of the electronic expansion valve is communicated with the inlet of the evaporator through a pipeline, the outlet of the evaporator is communicated with the inlet of the magnetic suspension compressor through a pipeline, and the permanent magnet synchronous motor is connected with the magnetic suspension compressor. The invention can convert a heat source into refrigerating capacity, and belongs to the technical field of water chilling units.
Description
Technical Field
The invention relates to the technical field of water chilling units, in particular to a triple-generation magnetic suspension water chilling unit.
Background
The existing water chiller generally consumes electric energy of a power grid, and then the electric energy drives a refrigerating system to finally output refrigerating capacity. In a place where a large amount of heat sources are present, the heat sources cannot be used to generate the cooling capacity. Moreover, the existing water chilling unit has the disadvantages of complex structure, severe noise and vibration, large size, complex lubricating oil system, large maintenance workload, high maintenance cost and low efficiency.
Disclosure of Invention
Aiming at the technical problems existing in the prior art, the invention aims at: the triple-generation magnetic suspension water chilling unit can convert a heat source into refrigerating capacity.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a triple-generation magnetic suspension water chilling unit comprises a steam generator, a water pump, a steam turbine, an evaporation condenser, a first generator, a working medium pump, a magnetic suspension expander, a first condenser, a second generator, a magnetic suspension compressor, a second condenser, an electronic expansion valve, an evaporator and a permanent magnet synchronous motor;
the working medium outlet of the steam generator is communicated with the inlet of the steam turbine through a pipeline, the outlet of the steam turbine is communicated with the first working medium inlet of the evaporative condenser through a pipeline, the first working medium outlet of the evaporative condenser is communicated with the inlet of the water pump through a pipeline, the outlet of the water pump is communicated with the working medium inlet of the steam generator through a pipeline, and the steam turbine is connected with the first generator;
the second working medium outlet of the evaporation condenser is communicated with the inlet of the magnetic suspension expansion machine through a pipeline, the outlet of the magnetic suspension expansion machine is communicated with the inlet of the first condenser through a pipeline, the outlet of the first condenser is communicated with the inlet of the working medium pump through a pipeline, the outlet of the working medium pump is communicated with the second working medium inlet of the evaporation condenser through a pipeline, and the magnetic suspension expansion machine is connected with the second generator;
the outlet of the magnetic suspension compressor is communicated with the inlet of the second condenser through a pipeline, the outlet of the second condenser is communicated with the inlet of the electronic expansion valve through a pipeline, the outlet of the electronic expansion valve is communicated with the inlet of the evaporator through a pipeline, the outlet of the evaporator is communicated with the inlet of the magnetic suspension compressor through a pipeline, and the permanent magnet synchronous motor is connected with the magnetic suspension compressor.
Further is: the steam turbine is connected to the first generator through a rotating shaft.
Further is: the magnetic suspension expansion machine is provided with a worm wheel, the worm wheel is connected with the second generator through a magnetic suspension rotating shaft, a magnetic bearing is sleeved on the magnetic suspension rotating shaft, and the worm wheel, the magnetic suspension rotating shaft, the second generator and the magnetic bearing are arranged in the same semi-closed shell.
Further is: the water chilling unit further comprises a bearing control system and a position sensor, wherein the position sensor is arranged on the magnetic bearing and is in signal connection with the bearing control system.
In general, the invention has the following advantages:
the invention organically combines the steam turbine generator set, the magnetic suspension waste heat generator set and the magnetic suspension water chilling unit to realize the processes of utilizing a heat source to generate electricity by the steam turbine generator set and the magnetic suspension waste heat generator set, and then transmitting the generated electricity to the magnetic suspension water chilling unit for preparing chilled water to realize heat energy, waste heat recovery, electric energy and refrigerating capacity. The magnetic suspension expander and the magnetic suspension compressor adopted by the invention have the characteristics of high frequency conversion speed, quite small volume, stable and reliable operation, small maintenance workload and low maintenance cost. The magnetic suspension expander and the magnetic suspension compressor eliminate the traditional high friction loss and mechanical abrasion and the high maintenance cost of the lubricating oil system.
Drawings
Fig. 1 is a schematic diagram of a chiller according to the present invention.
Fig. 2 is a schematic diagram of the water chiller of the present invention, omitting some reference numerals.
Wherein 1 is a steam generator, 2 is a water pump, 3 is a steam turbine, 4 is an evaporation condenser, 5 is a first generator, 6 is a working medium pump, 7 is a magnetic suspension expander, 8 is a first condenser, 9 is a second generator, 10 is a magnetic suspension compressor, 11 is a second condenser, 12 is an electronic expansion valve, 13 is an evaporator, 14 is a power grid system, 15 is a permanent magnet synchronous motor, 16 is a working medium inlet of the steam generator, 17 is a working medium outlet of the steam generator, 18 is an inlet of the steam turbine, 19 is an outlet of the steam turbine, 20 is a first working medium inlet of the evaporation condenser, 21 is a first working medium outlet of the evaporation condenser, 22 is a second working medium outlet of the evaporation condenser, 23 is a second working medium inlet of the evaporation condenser, 24 is an inlet of the water pump, 25 is an outlet of the magnetic suspension expander, 26 is an inlet of the magnetic suspension expander, 27 is an outlet of the magnetic suspension expander, 28 is an inlet of the first condenser, 29 is an outlet of the first condenser, 30 is an inlet of the working medium pump, 31 is an outlet of the pump, 32 is an outlet of the compressor, 21 is an outlet of the second working medium inlet of the evaporation condenser, 33 is an outlet of the electronic expansion valve, 34 is an outlet of the electronic expansion valve, 37 is an outlet of the evaporation valve, and 37 is an outlet of the electronic expansion valve.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description.
The triple-generation magnetic suspension water chilling unit comprises a steam generator, a water pump, a steam turbine, an evaporation condenser, a first generator, a working medium pump, a magnetic suspension expander, a first condenser, a second generator, a magnetic suspension compressor, a second condenser, an electronic expansion valve, an evaporator and a permanent magnet synchronous motor. The steam generator is provided with a working medium inlet and a working medium outlet, and is also provided with other channels for the heat source to enter; the evaporation condenser is provided with a first working medium inlet, a first working medium outlet, a second working medium inlet and a second working medium outlet.
The magnetic suspension water chilling unit provided by the invention is provided with three circulating systems, and the three circulating systems are described in detail below:
the first circulation system, namely a first co-supply: the working medium outlet of the steam generator is communicated with the inlet of the steam turbine through a pipeline, the outlet of the steam turbine is communicated with the first working medium inlet of the evaporative condenser through a pipeline, the first working medium outlet of the evaporative condenser is communicated with the inlet of the water pump through a pipeline, the outlet of the water pump is communicated with the working medium inlet of the steam generator through a pipeline, and the steam turbine is connected with the first generator. The working medium is water which flows in the pipeline of the first circulation system, and the working medium is converted into liquid and gas in the circulation flow process.
The second circulation system, namely the second co-supply: the second working medium outlet of the evaporation condenser is communicated with the inlet of the magnetic suspension expansion machine through a pipeline, the outlet of the magnetic suspension expansion machine is communicated with the inlet of the first condenser through a pipeline, the outlet of the first condenser is communicated with the inlet of the working medium pump through a pipeline, the outlet of the working medium pump is communicated with the second working medium inlet of the evaporation condenser through a pipeline, and the magnetic suspension expansion machine is connected with the second generator. The pipeline of the second circulation system is circulated with an organic working medium, and the organic working medium is converted into liquid and gas in the circulating flow process.
A third circulation system, namely third co-generation: the outlet of the magnetic suspension compressor is communicated with the inlet of the second condenser through a pipeline, the outlet of the second condenser is communicated with the inlet of the electronic expansion valve through a pipeline, the outlet of the electronic expansion valve is communicated with the inlet of the evaporator through a pipeline, the outlet of the evaporator is communicated with the inlet of the magnetic suspension compressor through a pipeline, and the permanent magnet synchronous motor is connected with the magnetic suspension compressor. The refrigerant flows through the pipes of the third circulation system. The magnetic suspension compressor is provided with a centrifugal impeller, the permanent magnet synchronous motor is connected with the centrifugal impeller through a magnetic suspension rotating shaft, the magnetic suspension rotating shaft is sleeved with a magnetic bearing, and the permanent magnet synchronous motor, the magnetic suspension rotating shaft, the centrifugal impeller and the magnetic bearing are arranged in the same semi-closed shell.
The working principle of three circulation systems is described below with a specific example:
first circulation system: 2000kW of heat is input into the steam generator 1, the steam generator generates water steam, the generated steam flows out of a working medium outlet of the steam generator, then the steam flows in a pipeline, the steam flows into the steam turbine from an inlet of the steam turbine, the steam drives the steam turbine 3 to operate, the steam turbine drives the first generator 5 to generate electricity through a rotating shaft, the first generator generates 220kW of electric energy, then the steam flows out of an outlet of the steam turbine, then the steam flows in the pipeline, the steam enters the evaporation condenser 4 from a first working medium inlet of the evaporation condenser, the working medium is condensed into a liquid state from a gaseous state of the steam, and the working medium flows out of a first working medium outlet of the evaporation condenser and then returns to the steam generator 1 through the water pump 2, so that the working medium continuously circulates. The first circulation system is a steam turbine generator set.
The second circulation system: the organic working medium in the second circulation system enters the evaporation condenser from the second working medium inlet of the evaporation condenser, then comes out from the second working medium outlet of the evaporation condenser, in the evaporation condenser 4, the organic working medium in the second circulation system absorbs the heat of the water in the first circulation system, after the organic working medium in the second circulation system absorbs the waste heat, the organic working medium changes into the gaseous state of steam from the liquid state, then the steam enters the magnetic suspension expansion machine 7, the magnetic suspension expansion machine drives the second generator 9 to operate, the second generator generates 220kW of electric energy, then the steam enters the first condenser 8 to be condensed into the liquid state, after passing through the first condenser, the organic working medium is condensed into the liquid state from the gaseous state of the steam, and then the organic working medium returns to the evaporation condenser 4 from the second working medium inlet of the evaporation condenser through the working medium pump 6, so that the circulation is continued. The second circulation system is a magnetic suspension waste heat generator set.
Third circulation system: the first generator and the second generator are electrically connected with a power grid system, and the power grid system is electrically connected with the permanent magnet synchronous motor. The first generator 5 and the second generator 9 generate 440kW of electric energy together, the 440kW of electric energy is transmitted to a power grid system, then the power grid system inputs the electric energy to a permanent magnet synchronous motor, the permanent magnet synchronous motor drives a magnetic levitation compressor 10 to work, the magnetic levitation compressor changes a refrigerant into a high-temperature high-pressure gas state and then transmits the gas state to a second condenser 11, the second condenser condenses the refrigerant into a high-temperature high-pressure liquid state and then transmits the high-temperature high-pressure liquid state to an electronic expansion valve, the electronic expansion valve 12 throttles the refrigerant into a low-temperature low-pressure gas-liquid two-phase mixture and then enters an evaporator, the gas-liquid two-phase mixture enters the evaporator 13 and then evaporates, and the 4400kW of refrigerating capacity is generated and output. The third circulation system is a magnetic suspension water chilling unit.
The steam turbine is connected to the first generator through a rotating shaft. The water vapor enters the steam turbine to expand and do work, and then drives the first generator to work through the rotating shaft to generate electric energy.
The magnetic suspension expansion machine is provided with a worm wheel, the worm wheel is connected with the second generator through a magnetic suspension rotating shaft, a magnetic bearing is sleeved on the magnetic suspension rotating shaft, and the worm wheel, the magnetic suspension rotating shaft, the second generator and the magnetic bearing are arranged in the same semi-closed shell. The organic steam enters a magnetic suspension expansion machine to expand and do work, and then drives a second generator to work through a magnetic suspension rotating shaft to generate electric energy.
The generated electric energy is transmitted to a permanent magnet synchronous motor, the permanent magnet synchronous motor does work, and then the magnetic suspension rotating shaft drives the magnetic suspension compressor to work so as to compress refrigerant vapor and perform vapor compression refrigeration cycle.
The water chilling unit further comprises a bearing control system and a position sensor, wherein the position sensor is arranged on the magnetic bearing and is in signal connection with the bearing control system.
The invention utilizes the heat source to input 2000kW of heat, can generate 4400kW of refrigerating capacity, and can reach an energy efficiency ratio of 2.2.
In the non-refrigeration season, the operation of the magnetic suspension water chilling unit can be stopped, and electric energy is output. When the heat is insufficient, electric energy can be input into the magnetic suspension water chilling unit from the power grid system, so that the magnetic suspension water chilling unit can generate enough refrigerating capacity.
The invention adopts the magnetic suspension expander, the magnetic suspension rotating shaft, the magnetic bearing and the second generator, and has higher technical efficiency than the traditional radial turbine or screw expander using lubricating oil. The magnetic suspension expander has the characteristics of high frequency conversion speed (reaching 45000 RPM), quite small volume, quiet running, stability and reliability. The dedicated magnetic bearings replace the conventional lube bearings, eliminating high friction losses and mechanical wear and high maintenance costs of the lube system. This oil-free design gives the magnetic levitation expander excellent efficiency. The magnetic suspension expansion machine comprises a main movable component (a magnetic suspension rotating shaft and a turbine), wherein the magnetic suspension rotating shaft is suspended and rotated through a numerical control magnetic bearing system, and a position sensor on the magnetic bearing feeds back signals to a bearing control system in real time at the frequency of 10 ten thousand times per second, so that the movable component is always suspended at the central position. The steam enters the magnetic suspension expansion machine to expand and do work, so that the efficiency and the generated energy are greatly improved, and the effective waste heat and low-level heat energy can be recovered and managed to the maximum extent.
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.
Claims (4)
1. The utility model provides a trigeminy supplies magnetic suspension cooling water set which characterized in that: the device comprises a steam generator, a water pump, a steam turbine, an evaporation condenser, a first generator, a working medium pump, a magnetic suspension expander, a first condenser, a second generator, a magnetic suspension compressor, a second condenser, an electronic expansion valve, an evaporator and a permanent magnet synchronous motor;
the working medium outlet of the steam generator is communicated with the inlet of the steam turbine through a pipeline, the outlet of the steam turbine is communicated with the first working medium inlet of the evaporative condenser through a pipeline, the first working medium outlet of the evaporative condenser is communicated with the inlet of the water pump through a pipeline, the outlet of the water pump is communicated with the working medium inlet of the steam generator through a pipeline, and the steam turbine is connected with the first generator;
the second working medium outlet of the evaporation condenser is communicated with the inlet of the magnetic suspension expansion machine through a pipeline, the outlet of the magnetic suspension expansion machine is communicated with the inlet of the first condenser through a pipeline, the outlet of the first condenser is communicated with the inlet of the working medium pump through a pipeline, the outlet of the working medium pump is communicated with the second working medium inlet of the evaporation condenser through a pipeline, and the magnetic suspension expansion machine is connected with the second generator;
the outlet of the magnetic suspension compressor is communicated with the inlet of the second condenser through a pipeline, the outlet of the second condenser is communicated with the inlet of the electronic expansion valve through a pipeline, the outlet of the electronic expansion valve is communicated with the inlet of the evaporator through a pipeline, the outlet of the evaporator is communicated with the inlet of the magnetic suspension compressor through a pipeline, and the permanent magnet synchronous motor is connected with the magnetic suspension compressor.
2. The triple co-generation magnetic suspension water chilling unit according to claim 1, wherein: the steam turbine is connected to the first generator through a rotating shaft.
3. The triple co-generation magnetic suspension water chilling unit according to claim 1, wherein: the magnetic suspension expansion machine is provided with a worm wheel, the worm wheel is connected with the second generator through a magnetic suspension rotating shaft, and a magnetic bearing is sleeved on the magnetic suspension rotating shaft.
4. A triple co-generation magnetic levitation water chilling unit according to claim 3, wherein: the water chilling unit further comprises a bearing control system and a position sensor, wherein the position sensor is arranged on the magnetic bearing and is in signal connection with the bearing control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710756947.9A CN107367083B (en) | 2017-08-29 | 2017-08-29 | Triple-generation magnetic suspension water chilling unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710756947.9A CN107367083B (en) | 2017-08-29 | 2017-08-29 | Triple-generation magnetic suspension water chilling unit |
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| CN107367083A CN107367083A (en) | 2017-11-21 |
| CN107367083B true CN107367083B (en) | 2023-05-05 |
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| CN113790089A (en) * | 2021-08-24 | 2021-12-14 | 鑫磊压缩机股份有限公司 | Low-temperature waste heat power generation system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011092895A2 (en) * | 2010-01-28 | 2011-08-04 | Ebara Corporation | Power generating system |
| CN103175276A (en) * | 2013-04-12 | 2013-06-26 | 南京佳力图空调机电有限公司 | Air-cooling direct-current frequency-conversion magnetic levitation nature cold source water chilling unit |
| CN106438165A (en) * | 2015-08-11 | 2017-02-22 | 詹平治 | Hydraulic energy magnetic levitation heat pump cold and heat draught fan set and power generating device thereof |
| CN207162998U (en) * | 2017-08-29 | 2018-03-30 | 广州番禺速能冷暖设备有限公司 | A kind of trilogy supply magnetic suspension handpiece Water Chilling Units |
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2017
- 2017-08-29 CN CN201710756947.9A patent/CN107367083B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011092895A2 (en) * | 2010-01-28 | 2011-08-04 | Ebara Corporation | Power generating system |
| CN103175276A (en) * | 2013-04-12 | 2013-06-26 | 南京佳力图空调机电有限公司 | Air-cooling direct-current frequency-conversion magnetic levitation nature cold source water chilling unit |
| CN106438165A (en) * | 2015-08-11 | 2017-02-22 | 詹平治 | Hydraulic energy magnetic levitation heat pump cold and heat draught fan set and power generating device thereof |
| CN207162998U (en) * | 2017-08-29 | 2018-03-30 | 广州番禺速能冷暖设备有限公司 | A kind of trilogy supply magnetic suspension handpiece Water Chilling Units |
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