CN113701380B - CO based on supersonic speed rotational flow two-phase expansion system2Multi-energy complementary distributed energy station - Google Patents
CO based on supersonic speed rotational flow two-phase expansion system2Multi-energy complementary distributed energy station Download PDFInfo
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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
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
- F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide
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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
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
- F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
- F01K25/103—Carbon dioxide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D15/00—Other domestic- or space-heating systems
- F24D15/04—Other domestic- or space-heating systems using heat pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water heaters
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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
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
- F25J1/0228—Coupling of the liquefaction unit to other units or processes, so-called integrated processes
- F25J1/0235—Heat exchange integration
- F25J1/0237—Heat exchange integration integrating refrigeration provided for liquefaction and purification/treatment of the gas to be liquefied, e.g. heavy hydrocarbon removal from natural gas
- F25J1/0239—Purification or treatment step being integrated between two refrigeration cycles of a refrigeration cascade, i.e. first cycle providing feed gas cooling and second cycle providing overhead gas cooling
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- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
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Abstract
The invention provides CO based on a supersonic speed rotational flow two-phase expansion system2The multi-energy complementary distributed energy station comprises a power generation system, a heating system and a refrigerating system, wherein the power generation system is used for receiving heat energy and converting the heat energy into mechanical energy to generate electricity; the heating system is connected with the power generation system and comprises a plurality of heat exchangers for heating; the refrigerating system is connected with the heating system and is arranged on one side of the heating system far away from the power generation system, the refrigerating system comprises a plurality of supersonic speed rotational flow two-phase expanders which are arranged in parallel, a refrigerating unit is connected to the liquid outlet side of each supersonic speed rotational flow two-phase expander for refrigeration, and the gas outlet side of each supersonic speed rotational flow two-phase expander returns to the inlet side of the heating system to participate in circulation. Therefore, the CO based on the supersonic speed rotational flow two-phase expansion system provided by the invention2The multi-energy complementary distributed energy station can perform cascade utilization on heat energy, realizes cold, heat and electricity cogeneration and carbon dioxide capture, utilization and sequestration, achieves zero emission, and improves the utilization rate of energy.
Description
Technical Field
The invention relates to the technical field of energy utilization, in particular to CO based on a supersonic speed rotational flow two-phase expansion system2A multi-energy complementary distributed energy station.
Background
The traditional centralized energy system has a plurality of problems, the fuel grade loss is large in the combustion process, the conversion and utilization fault of the heat energy in the middle-temperature section and the low-temperature section can cause large-amount heat energy emission loss and serious pollution to the ecological environment, and the simple extensive utilization of the single high-grade energy input and the single low-grade energy output seriously restricts the improvement of the energy conversion efficiency. The traditional distributed energy system is a supplement to the traditional centralized energy system, but the traditional distributed energy system also utilizes chemical energy of fossil fuels in modes of direct combustion and the like, so that a large amount of available energy is lost and various pollutants are discharged, and the traditional distributed energy system becomes a bottleneck restricting further improvement of energy utilization efficiency and clean utilization.
In the twenty-first century, the sustainable development of energy, resources and environment has become the focus of common attention all over the world. The compatibility of the efficient utilization of energy and the coordination of the environment is the key for realizing the sustainable development of the economic society, and the multi-energy complementary distributed energy system is taken as the hotspot direction of the innovative development of the energy technology, has the advantages of high efficiency, environmental protection, economy, reliability and the like, is also the key research field for promoting the technical change of energy utilization and the transformation development of energy, and has very important significance for implementing the strategy of energy conservation and emission reduction in China and constructing a clean, low-carbon, safe and efficient energy system.
Disclosure of Invention
The embodiment of the invention provides CO based on a supersonic speed rotational flow two-phase expansion system2The utility model provides a distributed energy station of multipotency complementation for solve the energy station available energy loss is big among the prior art, environmental pollution is serious and energy conversion efficiency is low technical problem.
The embodiment of the invention provides CO based on a supersonic speed rotational flow two-phase expansion system2A multi-energy complementary distributed energy station comprising: the power generation system is used for receiving heat energy and converting the heat energy into mechanical energy to generate power;
the heating system is connected with the power generation system and comprises a plurality of heat exchangers for heating;
the refrigerating system is connected with the heating system and arranged on one side of the heating system far away from the power generation system, the refrigerating system comprises a plurality of supersonic speed rotational flow two-phase expanders which are arranged in parallel, a refrigerating unit is connected to the liquid outlet side of each supersonic speed rotational flow two-phase expander for refrigeration, and the gas outlet side of each supersonic speed rotational flow two-phase expander returns to the inlet side of the heating system to participate in circulation.
CO based supersonic cyclonic two-phase expansion system according to one embodiment of the present invention2The multi-energy complementary distributed energy station comprises a power generation system, a heat storage system, a heat conversion system, a power turbine and a generator, wherein the heat storage system is connected with the heat conversion system;
the heat storage system is used for receiving heat energy and transmitting the heat energy to the heat conversion system, the heat conversion system is used for converting the heat energy into mechanical energy to be output and acting on the power turbine, and the power turbine transmits the generated mechanical work to the generator to generate electricity.
CO based on supersonic cyclonic two-phase expansion system according to one embodiment of the present invention2The multi-energy complementary distributed energy source station further comprises a power grid system for receiving the electric energy generated by the generators.
CO based on supersonic cyclonic two-phase expansion system according to one embodiment of the present invention2The multi-energy complementary distributed energy station is characterized in that the working medium of the power turbine is carbon dioxide.
CO based on supersonic cyclonic two-phase expansion system according to one embodiment of the present invention2A multi-energy complementary distributed energy source station,
the heating system comprises a compressor, a first heat exchanger connected with the compressor and a second heat exchanger connected with the first heat exchanger;
one side of the first heat exchanger is connected with a first heat receiving system, one side of the second heat exchanger is connected with a second heat receiving system, and a heat exchange temperature zone of the first heat receiving system is higher than a heat exchange temperature zone of the heat receiving system.
CO based supersonic cyclonic two-phase expansion system according to one embodiment of the present invention2Complementary distribution of multiple energiesAnd the compressor is connected with the generator and is used for receiving the electric energy generated by the generator.
CO based supersonic cyclonic two-phase expansion system according to one embodiment of the present invention2The refrigeration unit is one or a combination of a dry ice system, an ice and snow shop system, an air conditioning system and a refrigerator system.
CO based supersonic cyclonic two-phase expansion system according to one embodiment of the present invention2And the air outlet side of the supersonic rotational flow two-phase expander is connected with a residual pressure utilization system.
CO based supersonic cyclonic two-phase expansion system according to one embodiment of the present invention2A multi-energy complementary distributed energy station, an output side of the refrigeration unit merging with an output side of the excess pressure utilization system and flowing to an inlet side of the heating system.
CO based supersonic cyclonic two-phase expansion system according to one embodiment of the present invention2The supersonic speed rotational flow two-phase expansion machine comprises a rotational flow device, a spray pipe, a rotational flow separation section, a liquid discharge structure and a diffuser which are sequentially connected, wherein one end, far away from the spray pipe, of the rotational flow device corresponds to the air inlet side of the supersonic speed rotational flow two-phase expansion machine, the liquid discharge port of the liquid discharge structure corresponds to the liquid outlet side of the supersonic speed rotational flow two-phase expansion machine, and one side, far away from the rotational flow separation section, of the diffuser corresponds to the air outlet side of the supersonic speed rotational flow two-phase expansion machine.
CO based on supersonic speed rotational flow two-phase expansion system provided by embodiment of the invention2The multi-energy complementary distributed energy station utilizes a power generation system to convert heat energy into mechanical energy to generate power so as to realize the generation and utilization of electric energy, then utilizes a plurality of heat exchangers to utilize the heat energy in multiple stages through a heating system, and realizes refrigeration through a supersonic speed rotational flow two-phase expander. Namely CO based on supersonic speed rotational flow two-phase expansion system provided by the invention2The multi-energy complementary distributed energy station can carry out cascade utilization on heat energy, and realizes cold, heat and electricity cogeneration and zero emission of carbon dioxideAnd the utilization rate of energy is greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 shows a CO based supersonic cyclonic two-phase expansion system according to an embodiment of the present invention2The structural schematic diagram of the multi-energy complementary distributed energy source station;
FIG. 2 is a schematic structural view of the supersonic cyclonic two-phase expander shown in FIG. 1;
reference numerals:
10. a power generation system; 110. a thermal storage system; 120. a heat conversion system; 130. a power turbine; 140. a generator; 150. a grid system;
20. a heating system; 210. a heat exchanger; 220. a compressor; 230. a first heat exchanger; 240. A second heat exchanger; 250. a first heat receiving system; 260. a second heat receiving system;
30. a refrigeration system; 310. a supersonic rotational flow two-phase expander; 3110. a swirling device; 3120. A nozzle; 3130. a cyclone separation section; 3140. a liquid discharge structure; 3150. a diffuser; 320. A refrigeration unit; 3210. a dry ice system; 3220. ice and snow museum systems; 3230. a refrigerator system; 3240. an air conditioning system; 330. and a residual pressure utilization system.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring now to FIGS. 1 and 2, embodiments of the present invention provide a CO based supersonic cyclonic two-phase expansion system2CO of multi-energy complementary distributed energy station based on supersonic speed rotational flow two-phase expansion system2The multi-energy complementary distributed energy station comprises a power generation system 10, a heating system 20 and a refrigerating system 30, wherein the power generation system 10 is used for receiving heat energy and converting the heat energy into mechanical energy to generate electricity; the heating system 20 is connected with the power generation system 10, and the heating system 20 comprises a plurality of heat exchangers 210 for heating; the refrigerating system 30 is connected with the heating system 20 and is arranged on one side of the heating system 20 far away from the power generation system 10, the refrigerating system 30 comprises an supersonic speed rotational flow two-phase expander 310, a liquid outlet side of the supersonic speed rotational flow two-phase expander 310 is connected with a refrigerating unit 320 for refrigerating, and a gas outlet side of the supersonic speed rotational flow two-phase expander 310 returns to an inlet side of the heating system 20 to participate in circulation.
For the power generation system 10, the power generation system 10 includes a thermal storage system 110, a thermal conversion system 120 coupled to the thermal storage system 110, a power turbine 130 coupled to the thermal conversion system 120, and a generator 140 coupled to the power turbine 130; the thermal storage system 110 is configured to receive thermal energy and transfer the thermal energy to the thermal conversion system 120, the thermal conversion system 120 is configured to convert the thermal energy into a mechanical energy output, the mechanical energy output acts on the power turbine 130, and the power turbine 130 transfers the generated mechanical work to the generator 140 to generate electricity. The generator 140 is also connected to a power grid system 150 for receiving the electric power generated by the generator 140. For the power turbine 130, the working fluid employed is carbon dioxide.
For the heating system 20, the heating system 20 includes a compressor 220, a first heat exchanger 230 connected to the compressor 220, and a second heat exchanger 240 connected to the first heat exchanger 230; one side of the first heat exchanger 230 is connected with a first heat receiving system 250, one side of the second heat exchanger 240 is connected with a second heat receiving system 260, and a heat exchange temperature zone of the first heat receiving system 250 is higher than a heat exchange temperature zone of the second heat receiving system 260. In a possible embodiment of the present invention, such as the one illustrated in fig. 1, the first heat receiving system 250 may be a water heater system, the second heat receiving system 260 may be a heating system, and in other embodiments, the first heat receiving system 250 and the second heat receiving system 260 may also be other possible thermal energy receiving systems, which is not limited herein. The compressor 220 is connected to the generator 140 for receiving the electric power generated by the generator 140.
In a possible embodiment of the invention, the refrigeration unit 320 is a combination of one or more of a dry ice system 3210, a snow and ice museum system 3220, an air conditioning system 3240, and a refrigerator system 3230. The outlet side of the supersonic cyclonic two-phase expander 310 is connected to a residual pressure utilization system 330. The output side of the refrigeration unit 320 is merged with the output side of the excess pressure utilization system 330 and flows to the inlet side of the heating system 20. For the supersonic speed swirling two-phase expander 310, the supersonic speed swirling two-phase expander 310 comprises a swirling device 3110, a spray pipe 3120, a swirling separation section 3130, a drainage structure 3140 and a diffuser 3150 which are connected in sequence, one end of the swirling device 3110, which is far away from the spray pipe 3120, corresponds to an air inlet side of the supersonic speed swirling two-phase expander 310, a drainage port of the drainage structure 3140 corresponds to a liquid outlet side of the supersonic speed swirling two-phase expander 310, and one side of the diffuser 3150, which is far away from the swirling separation section 3130, corresponds to an air outlet side of the supersonic speed swirling two-phase expander 310.
That is, when the energy station is in operation, firstly, the heat energy in renewable energy sources such as solar energy, geothermal energy and biomass energy is stored in the heat storage system 110, then the stored heat energy is converted into mechanical energy through the heat conversion system 120 to be output, the mechanical energy acts on the power turbine 130, the working medium is carbon dioxide, the heat energy generated by the solar energy, the geothermal energy and the biomass energy in the renewable energy sources can be stored in the heat storage system 110, liquid carbon dioxide can be arranged in the heat conversion system 120, when the heat energy is received from the heat storage system 110, the heat energy can heat the liquid carbon dioxide into a gas state to be changed into high-temperature gaseous carbon dioxide, then the high-temperature gaseous carbon dioxide is transmitted to the power turbine 130, the rotating blades in the power turbine 130 are pushed to drive the generator 140 to cut magnetic induction lines to generate electricity, and the redundant heat energy can be returned to the heat storage system 110 to be stored. The mechanical energy is converted into electrical energy by the generator 140 and output, and a part of the generated electrical energy is merged into the power grid system 150 together with electrical energy obtained by wind power generation and solar power generation in renewable energy sources, and the other part is provided to the compressor 220. In the heating system 20, the compressor 220 compresses the carbon dioxide working medium, the pressure and the temperature of the carbon dioxide are greatly increased, and a large temperature slip exists in the heat release process of the carbon dioxide, for example, the common slip temperature range of the heat release of the carbon dioxide can be from 120 ℃ to 20 ℃, so that a plurality of heat exchangers 210 can be arranged for heat exchange. For example, a first heat exchanger 230 and a second heat exchanger 240 may be provided, a first heat receiving system 250 is disposed on one side of the first heat exchanger 230 to utilize heat energy, a second heat receiving system 260 is disposed on one side of the second heat exchanger 240 to utilize heat energy, so that the heat energy can be fully utilized in a cascade manner, and a heating function is realized, the first heat receiving system 250 is described by taking a water heater system as an example, the water heater system may pass a cold water pipe through the first heat exchanger 230 to exchange heat, so as to obtain high-temperature hot water, and further, the heat energy can be utilized, the second heat receiving system 260 is described by taking a heating system as an example, and the heating system may transmit the cold water pipe to the second heat exchanger 240 to exchange heat, so as to obtain higher-temperature hot water. In the refrigeration system 30, high-pressure room-temperature carbon dioxide enters the supersonic speed rotational flow two-phase expander 310, the carbon dioxide generates centrifugal force under the action of the rotational flow device 3110, and then is subjected to entropy expansion, temperature reduction and pressure reduction in the spray pipe 3120 to generate low-temperature effect, after the temperature is reduced, a part of carbon dioxide gas is condensed and nucleated to generate liquid drops and further grow, when the expansion depth is below the carbon dioxide three-phase point, solid-phase carbon dioxide, namely dry ice, is generated and enters the dry ice system 3210, and the carbon dioxide is captured, utilized and sealed. And when the expansion depth is not below the carbon dioxide three-phase point, no solid phase is generated, and the generated low-temperature liquid phase is discharged from the cyclone separation section 3130 through the liquid discharge structure 3140 under the tangential speed and centrifugal action generated by rotation, so that gas-liquid separation is realized. For example, the low-temperature liquid phase can be subjected to sufficient heat exchange in the ice and snow museum system 3220, the refrigerator system 3230 or the air-conditioning system 3240, so that a suitable refrigeration environment is generated for different systems to use, and the cold energy of the low-temperature carbon dioxide is utilized in a gradient manner, so that a refrigeration function is realized. The residual carbon dioxide gas phase is discharged after being decelerated, heated and pressurized by the diffuser 3150, most of the pressure energy is recovered, and then enters the residual pressure utilization system 330 to fully utilize the recovered pressure energy.
It should be noted that the supersonic cyclonic two-phase expander 310 may correspond to the dry ice system 3210, the ice and snow stadium system 3220, the air conditioning system 3240, and the refrigerator system 3230 one to one. For example, a single supersonic cyclone two-phase expander 310 corresponds to one refrigeration unit 320 of the dry ice system 3210, the ice and snow hall system 3220, the air conditioning system 3240 and the refrigerator system 3230, and a plurality of supersonic cyclone two-phase expanders 310 may also be provided, and respectively correspond to the dry ice system 3210, the ice and snow hall system 3220, the air conditioning system 3240 and the refrigerator system 3230, so that adaptability of the refrigeration system 30 to various working conditions is improved corresponding to different working conditions.
It should be noted that, for the dry ice system 3210, part of the carbon dioxide fixed as dry ice is sealed and used, that is, the carbon dioxide in the energy station is in a consumed state, and the whole energy station not only realizes zero emission of carbon dioxide, but also consumes carbon dioxide generated in other processes, thereby realizing an environmental protection effect. The carbon dioxide gas phase discharged from the dry ice system 3210, the ice and snow hall system 3220, the air conditioning system 3240, and the refrigerator system 3230 is mixed with the carbon dioxide gas phase discharged from the residual pressure utilization system 330, and reenters the compressor 220 to realize circulation.
In summary, the embodiment of the invention provides CO based on supersonic speed rotational flow two-phase expansion system2The multi-energy complementary distributed energy station can convert thermal energy into mechanical energy to generate electricity by using the power generation system 10, so as to generate and utilize electric energy, and then utilize the thermal energy in multiple stages by using a plurality of heat exchangers 210 through the heating system 20, and realize refrigeration through the supersonic speed rotational flow two-phase expander 310. Namely CO based on supersonic speed rotational flow two-phase expansion system provided by the invention2The multi-energy complementary distributed energy station can perform cascade utilization on heat energy, realizes cold, heat and electricity cogeneration and carbon dioxide capture, utilization and sequestration to achieve zero emission of carbon dioxide, and greatly improves the utilization rate of energy. Namely, the carbon dioxide multi-energy complementary distributed energy station of the supersonic rotational flow two-phase expansion system provided by the embodiment of the invention organically combines multi-level different-grade processes and power circulation, realizes comprehensive cascade utilization of energy, and can solve the problems of large available energy loss, serious environmental pollution, low energy conversion efficiency and the like of the traditional centralized energy system and the traditional distributed energy system. In addition, the carbon dioxide multi-energy complementary distributed energy station of the supersonic rotational flow two-phase expansion system finishes the capture, utilization and sealing of the carbon dioxide, and realizes the combined production of cold, heat and power and zero emission of the carbon dioxide. The supersonic speed rotational flow two-phase expander 310 has the outstanding advantages of high expansion refrigeration efficiency, simple and compact structure, safety, reliability, low energy consumption and the like, so that the utilization efficiency of energy is improved while the operation safety of the whole energy station is higher, the energy consumption is lower.
In embodiments of the invention, unless expressly stated or limited otherwise, a first feature may be "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediary. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. CO based on supersonic speed rotational flow two-phase expansion system2A multi-energy complementary distributed energy station, comprising:
the power generation system is used for receiving heat energy and converting the heat energy into mechanical energy to generate power;
the heating system is connected with the power generation system and comprises a plurality of heat exchangers for heating;
the refrigerating system is connected with the heating system and is arranged on one side of the heating system far away from the power generation system, the refrigerating system comprises a plurality of supersonic speed rotational flow two-phase expanders which are arranged in parallel, a refrigerating unit is connected to the liquid outlet side of each supersonic speed rotational flow two-phase expander for refrigeration, and the gas outlet side of each supersonic speed rotational flow two-phase expander returns to the inlet side of the heating system to participate in circulation; wherein,
the power generation system comprises a heat storage system, a heat conversion system connected with the heat storage system, a power turbine connected with the heat conversion system and a generator connected with the power turbine;
the heat storage system is used for receiving heat energy and transmitting the heat energy to the heat conversion system, the heat conversion system is used for converting the heat energy into mechanical energy to be output and acting on the power turbine, and the power turbine transmits the generated mechanical work to the generator to generate electricity;
the heating system comprises a compressor, a first heat exchanger connected with the compressor and a second heat exchanger connected with the first heat exchanger;
one side of the first heat exchanger is connected with a first heat receiving system, one side of the second heat exchanger is connected with a second heat receiving system, and a heat exchange temperature zone of the first heat receiving system is higher than a heat exchange temperature zone of the heat receiving system;
the refrigeration unit is one or more of a dry ice system, an ice and snow shop system, an air conditioning system and a refrigerator system.
2. CO based on supersonic cyclonic two-phase expansion system according to claim 12The multi-energy complementary distributed energy source station is characterized by further comprising a power grid system for receiving the electric energy generated by the generators.
3. CO based on supersonic cyclonic two-phase expansion system according to claim 12The multi-energy complementary distributed energy station is characterized in that the working medium of the power turbine is carbon dioxide.
4. CO based on supersonic cyclonic two-phase expansion system according to claim 12A multi-energy complementary distributed energy station, wherein said compressor is connected to said generator for receiving electrical energy generated by said generator.
5. CO based on supersonic cyclonic two-phase expansion system according to claim 12The multi-energy complementary distributed energy station is characterized in that the air outlet side of the supersonic speed rotational flow two-phase expansion machine is connected with an excess pressure utilization system.
6. CO based on supersonic cyclonic two-phase expansion system according to claim 52A multi-energy complementary distributed energy source station, wherein an output side of the refrigeration unit merges with an output side of the excess pressure utilization system and flows to an inlet side of the heating system.
7. CO based on supersonic cyclonic two-phase expansion system according to claim 12The multi-energy complementary distributed energy station is characterized in that the supersonic speed rotational flow two-phase expander comprises a rotational flow device, a spray pipe, a rotational flow separation section, a liquid discharge structure and a diffuser which are sequentially connected, wherein one end of the rotational flow device, which is far away from the spray pipe, corresponds to the air inlet side of the supersonic speed rotational flow two-phase expander, the liquid discharge port of the liquid discharge structure corresponds to the liquid outlet side of the supersonic speed rotational flow two-phase expander, and one side of the diffuser, which is far away from the rotational flow separation section, corresponds to the gas outlet side of the supersonic speed rotational flow two-phase expander.
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