CN214660403U - Coaxial integrated equipment for supercritical carbon dioxide power generation and replaceable energy storage system - Google Patents

Coaxial integrated equipment for supercritical carbon dioxide power generation and replaceable energy storage system Download PDF

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Publication number
CN214660403U
CN214660403U CN202121050291.7U CN202121050291U CN214660403U CN 214660403 U CN214660403 U CN 214660403U CN 202121050291 U CN202121050291 U CN 202121050291U CN 214660403 U CN214660403 U CN 214660403U
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storage loop
compressor
pressure storage
low
turbine
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李凯伦
李红智
姚明宇
张一帆
杨浦
蒋世希
张旭伟
张天宇
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Xian Thermal Power Research Institute Co Ltd
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Xian Thermal Power Research Institute Co Ltd
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Priority to DE202021105147.7U priority patent/DE202021105147U1/en
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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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/32—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines using steam of critical or overcritical pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas- turbine plants for special use
    • F02C6/14—Gas-turbine plants having means for storing energy, e.g. for meeting peak loads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2210/00—Working fluids
    • F05D2210/10—Kind or type
    • F05D2210/11—Kind or type liquid, i.e. incompressible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00—Application
    • F05D2220/70—Application in combination with
    • F05D2220/76—Application in combination with an electrical generator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/40—Transmission of power
    • F05D2260/402—Transmission of power through friction drives
    • F05D2260/4023—Transmission of power through friction drives through a friction clutch
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/40—Transmission of power
    • F05D2260/403—Transmission of power through the shape of the drive components
    • F05D2260/4031—Transmission of power through the shape of the drive components as in toothed gearing

Abstract

The utility model discloses a coaxial integrative equipment of supercritical carbon dioxide electricity generation and replacement formula energy storage system, including turbine, compressor and the integrative motor of starting, turbine, compressor and the integrative motor of starting are coaxial integrative and arrange the mode, arrange super speed clutch between turbine and the compressor, arrange the gearbox between compressor and the integrative motor of starting, wherein the integrative motor of starting plays the motor effect in the start-up stage, and the operation stage is as the generator and generates electricity; the high-pressure side of the turbine and the high-pressure side of the compressor are circularly connected with high-pressure storage loop equipment; and the low-pressure side of the turbine and the low-pressure side of the compressor are circularly connected with all equipment of the low-pressure storage loop. The utility model discloses saved the expense and the running cost of compressor motor, can effectually reach the energy storage and adjust the purpose of load.

Description

Coaxial integrated equipment for supercritical carbon dioxide power generation and replaceable energy storage system
Technical Field
The utility model relates to a supercritical carbon dioxide cyclic power generation technical field, in particular to coaxial integrative equipment of supercritical carbon dioxide electricity generation and replacement formula energy storage system.
Background
At present, circulating working media of large-scale power plants all over the world are water vapor, however, with the development of science and technology, people gradually find that the supercritical carbon dioxide is adopted as the circulating working media, and the circulating working media have the advantages of high circulating efficiency, compact equipment structure, low initial investment of capital construction and the like in a certain power range, so that the supercritical carbon dioxide circulating power generation system and the energy storage system thereof are a circulating mode with great technical prospects. Under the existing technical conditions, how to further improve the operating efficiency and the safety of carbon dioxide cycle power generation through the arrangement mode of equipment and a system is a key point and a difficulty in the field at present.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide a coaxial integrated equipment and a replaceable energy storage system for supercritical carbon dioxide power generation, which are coaxially arranged through a turbine, a compressor and an initiation integrated motor in the carbon dioxide cyclic power generation, wherein the initiation integrated motor is used as a motor in the starting stage and used as a generator in the running stage, thereby saving the cost and the running cost of the compressor motor; the high-pressure side faces of the compressor and the turbine are arranged in a face-to-face mode, axial thrust is counteracted mutually, and the load of a thrust bearing is reduced; meanwhile, high-pressure and low-pressure liquid storage tanks are arranged in the circulation loop, and working media are stored in the high-pressure liquid tank or discharged into the low-pressure liquid tank along with the change of electricity price or power generation load, so that the purposes of storing energy and adjusting load are achieved.
In order to realize the purpose, the utility model discloses a technical scheme is:
a supercritical carbon dioxide power generation coaxial integrated device and a replacement type energy storage system comprise a turbine 1, a compressor 3 and a starting integrated motor 5, wherein the turbine 1, the compressor 3 and the starting integrated motor 5 are coaxially and integrally arranged, a super-speed clutch 2 is arranged between the turbine 1 and the compressor 3, and a gearbox 4 is arranged between the compressor 3 and the starting integrated motor 5, wherein the starting integrated motor 5 plays a role of a motor in a starting stage, and the running stage serves as a generator to generate power;
the high-pressure side of the turbine 1 and the high-pressure side of the compressor 3 are connected with high-pressure storage loop equipment;
the low-pressure side of the turbine 1 and the low-pressure side of the compressor 3 are connected with each device of a low-pressure storage loop.
The high-pressure side of the turbine 1 is arranged opposite to the high-pressure side of the compressor 3.
In the system starting stage, when the rotating speed of the turbine 1 is lower than that of the compressor 3, the overspeed clutch 2 is disengaged; in the unit operation stage, when the rotating speed of the turbine 1 is higher than that of the compressor 3, the overspeed clutch 2 is engaged; the overrunning clutch 2 is capable of withstanding axial thrust.
The high-pressure storage loop equipment comprises a high-pressure storage loop inlet regulating valve 8, a high-pressure storage loop inlet check valve 9, a high-pressure storage loop cooler 10, a high-pressure storage loop liquid storage tank 11, a high-pressure storage loop outlet heater 12 and a high-pressure storage loop outlet check valve 13 which are sequentially connected, wherein an inlet of the high-pressure storage loop inlet regulating valve 8 is connected with the high-pressure side of the compressor 3, an outlet of the high-pressure storage loop outlet regulating valve 14 is connected with the high-pressure side of the turbine 1, and a main loop heater 6 is directly connected between an inlet of the high-pressure storage loop inlet regulating valve 8 and an outlet of the high-pressure storage loop outlet regulating valve 14.
Each device of the low-pressure storage loop comprises a low-pressure storage loop inlet regulating valve 15, a low-pressure storage loop inlet check valve 16, a low-pressure storage loop cooler 17, a low-pressure storage loop liquid storage tank 18, a low-pressure storage loop outlet heater 19, a low-pressure storage loop outlet check valve 20 and a low-pressure storage loop outlet regulating valve 21 which are connected in sequence, and each device of the low-pressure storage loop and the main loop cooler 7 are arranged in parallel.
A running method of a supercritical carbon dioxide power generation coaxial integrated device and a displacement type energy storage system comprises the following steps;
in a low electricity price period or when the power generation load needs to be reduced, sequentially opening a low-pressure storage loop outlet heater 19, a low-pressure storage loop outlet regulating valve 21, a high-pressure storage loop inlet regulating valve 8 and a high-pressure storage loop cooler 10, reducing the power of a main loop heater 6, simultaneously reducing the power generation load of a starting integrated motor 5, keeping the rotating speeds of a turbine 1, a compressor 3 and the starting integrated motor 5 constant, and storing a low-pressure storage loop liquid storage tank 18 in a high-pressure storage loop liquid storage tank 11 after increasing the pressure;
in a high electricity price period or when the power generation load needs to be increased, sequentially opening a high-pressure storage loop outlet heater 12, a high-pressure storage loop outlet regulating valve 14, a low-pressure storage loop inlet regulating valve 15 and a low-pressure storage loop cooler 17 to increase the power of a main loop heater 6, simultaneously increasing the power generation load of a starting integrated motor 5, keeping the rotating speed of a turbine 1, a compressor 3 and the starting integrated motor 5 constant, and discharging the liquid storage tank 11 stored in the high-pressure storage loop into a low-pressure storage loop liquid storage tank 18 after the liquid storage tank works through the main loop;
the starting integrated motor 5 is provided with a frequency converter speed regulating system, the frequency converter is adopted for soft starting in the starting stage, when the rotating speed of the turbine 1 is higher than that of the compressor 3, the overspeed clutch 2 is in a meshing state, the frequency converter exits, the unit enters the normal operation stage, the turbine 1 drives the compressor 3 and the starting integrated motor 5 to do work, and therefore energy loss of the compressor 3 driving motor and the frequency converter speed regulating system is reduced.
The utility model has the advantages that:
the utility model discloses a coaxial integrative arrangement mode of supercritical carbon dioxide circulation turbine power generation compression and high-low pressure fluid reservoir displacement energy storage system have that axial thrust is little, save capital construction equipment investment, improve advantages such as generated energy when energy storage, high price of electricity when low price of electricity, have very strong practicality and higher system operating efficiency.
Drawings
Fig. 1 is a schematic diagram of the system structure of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1: as a novel power generation technology, the supercritical carbon dioxide cyclic power generation has the advantages of high cyclic efficiency, compact equipment structure, low capital investment and the like in a certain power range, so that the supercritical carbon dioxide cyclic power generation system and the energy storage system thereof are a cyclic mode with great technical prospects.
1) The turbine 1, the compressor 3 and the starting integrated motor 5 are coaxially arranged, the overspeed clutch 2 is arranged between the turbine 1 and the compressor 3, and the gearbox 4 is arranged between the compressor 3 and the starting integrated motor 5; the high-pressure side of the turbine 1 and the high-pressure side of the compressor 3 are arranged in a face-to-face mode, so that the axial forces of the turbine and the compressor are mutually counteracted, the axial thrust of the unit is reduced, the load of a thrust bearing is reduced, and the structural safety of the unit is improved;
2) in the system, a generator and a motor adopt a starting integrated motor 5, the starting integrated motor serves as the motor to provide power for a compressor 3 in a starting stage, the rotating speed of a turbine 1 is lower than that of the compressor 3, an overspeed clutch 2 is in a disengaged state, and the starting integrated motor 5 does not apply work to the turbine 1; in the operation stage, a high-temperature and high-pressure working medium drives the turbine 1 to do work, the rotating speed of the turbine 1 is higher than that of the compressor 3, the overspeed clutch 2 is in a meshing state at the moment, the turbine 1 drives the compressor 3 and the starting integrated motor 5 to rotate and do work outwards, the generator and the motor are combined into a whole, and the initial investment of equipment is saved;
3) in the starting stage of the unit, the frequency converter is used as a speed regulating system to provide a soft starting mode for the compressor 3, when the rotating speed of the turbine 1 is higher than that of the compressor 3, the overspeed clutch 2 is engaged, the frequency converter exits, the unit enters a normal operation stage, the turbine 1 drives the compressor 3 and the starting integrated motor 5 to rotate and apply work to the outside, and therefore energy loss of a driving motor of the compressor 3 and the energy loss of the frequency-conversion speed regulating system are reduced;
4) when the unit is in a normal operation state, the unit is in a constant rotating speed operation state, when power generation load adjustment is needed, only the inlet and outlet regulating valves, the heaters and the coolers of the high-pressure and low-pressure storage loop system need to be opened or closed, high-pressure working media are injected into the high-pressure storage loop liquid storage tank 11 or discharged into the low-pressure storage loop liquid storage tank 18, the power of the main loop heater 6 is adjusted, and the power generation load of the integrated motor 5 is initiated, so that the purpose of load adjustment of the unit in the constant rotating speed state is achieved.
Aiming at the above supercritical carbon dioxide power generation coaxial integrated equipment and the displacement type energy storage system, the principle of the equipment in the starting and running stages is as follows:
aiming at the arrangement mode of the existing carbon dioxide power generation system, firstly, high-pressure storage loop equipment (a storage loop inlet regulating valve 8, a storage loop inlet check valve 9, a storage loop cooler 10, a storage loop liquid storage tank 11, a storage loop outlet heater 12, a storage loop outlet check valve 13 and a storage loop outlet regulating valve 14) is connected in parallel with an inlet pipeline and an outlet pipeline of a main loop heater 6; secondly, low-pressure storage loop inlet regulating valve 15, low-pressure storage loop inlet check valve 16, low-pressure storage loop cooler 17, low-pressure storage loop liquid storage tank 18, low-pressure storage loop outlet heater 19, low-pressure storage loop outlet check valve 20 and low-pressure storage loop outlet regulating valve 21 are connected in parallel with the inlet and outlet pipelines of the main loop cooler 7; and thirdly, the turbine 1, the compressor 3 and the starting integrated motor 5 are coaxially arranged, an overspeed clutch 2 is arranged between the turbine 1 and the compressor 3, and a gearbox 4 is arranged between the compressor 3 and the starting integrated motor 5.
When the unit is started, the variable frequency speed control system supplies power to the starting integrated motor 5, the starting integrated motor 5 drives the compressor 3 to start and slowly accelerate, carbon dioxide working media sequentially pass through the compressor 3, the main loop heater 6, the turbine 1 and the main loop cooler 7 and then return to the inlet of the compressor 3, meanwhile, the low-pressure storage loop outlet heater 19 and the low-pressure storage loop outlet check valve 20 are opened to continuously supplement the working media into the main loop system, at the moment, although the working media drive the turbine 1 to operate, the rotating speed of the turbine 1 is lower than that of the compressor 3, and the overspeed clutch 2 is in a disengaged state, namely, at the moment, the starting integrated motor 5 only drives the compressor 3 to do work as a motor.
Along with the increase of the rotating speed of the compressor 3 and the power of the main loop heater 6, the temperature and the pressure of a carbon dioxide working medium at the inlet of the turbine 1 are gradually increased, meanwhile, the rotating speed and the output power of the turbine 1 are also increased, when the rotating speed of the turbine 1 is higher than that of the compressor 3, the overrunning clutch 2 is engaged, the turbine 1 drives the compressor 3 and the starting integrated motor 5 to rotate, and at the moment, the starting integrated motor 5 serves as a generator and starts to output electric power outwards.
When the unit is in a designed power generation load, the high-pressure storage loop inlet regulating valve 8, the high-pressure storage loop cooler 10, the high-pressure storage loop outlet heater 12, the high-pressure storage loop outlet regulating valve 14, the low-pressure storage loop inlet regulating valve 15, the low-pressure storage loop cooler 17, the low-pressure storage loop outlet heater 19 and the low-pressure storage loop outlet regulating valve 21 are all in a closed or stopped state, at the moment, carbon dioxide working medium is compressed by the compressor 3 to increase pressure, heated by the main loop heater 6 to increase temperature, expanded by the turbine 1 to do work externally, and cooled by the main loop cooler 7 and then returns to the inlet of the compressor 3, so that a work cycle is completed.
During the low electricity price period, or the unit further reduces the power generation load on the basis of the design working condition, keeps the rotating speed of the turbine 1, the compressor 3 and the starting integrated motor 5 constant, and the system working medium is still in a normal circulation state, and sequentially opens the low-pressure storage loop outlet heater 19, the low-pressure storage loop outlet regulating valve 21, the high-pressure storage loop inlet regulating valve 8 and the high-pressure storage loop cooler 10, reduces the power generation load of the starting integrated motor 5 and the power of the main loop heater 6, and stores the working medium in the low-pressure storage loop liquid storage tank 18 in the high-pressure storage loop liquid storage tank 11 after increasing the pressure;
in a high electricity price period, or the unit needs to further increase the power generation load on the basis of a design working condition, the rotating speed of the turbine 1, the compressor 3 and the starting integrated motor 5 is kept constant, the working medium of the system is still in a normal circulation state, the high-pressure storage loop outlet heater 12, the high-pressure storage loop outlet regulating valve 14, the low-pressure storage loop inlet regulating valve 15 and the low-pressure storage loop cooler 17 are sequentially opened, the power generation load of the starting integrated motor 5 and the power of the main loop heater 6 are improved, the rotating speed of the turbine 1, the compressor 3 and the starting integrated motor 5 is kept constant, the working medium stored in the high-pressure storage loop liquid storage tank 11 is released into the low-pressure storage loop liquid storage tank 18 after acting through the main loop, and the purpose of improving the generated energy of the unit is achieved at the same time.

Claims (5)

1. A supercritical carbon dioxide power generation coaxial integrated device and a replacement type energy storage system are characterized by comprising a turbine (1), a compressor (3) and a starting integrated motor (5), wherein the turbine (1), the compressor (3) and the starting integrated motor (5) are coaxially and integrally arranged, a super-speed clutch (2) is arranged between the turbine (1) and the compressor (3), a gearbox (4) is arranged between the compressor (3) and the starting integrated motor (5), the starting integrated motor (5) plays a role of a motor in a starting stage, and the running stage serves as a generator to generate power;
the high-pressure side of the turbine (1) and the high-pressure side of the compressor (3) are connected with high-pressure storage loop equipment;
and the low-pressure side of the turbine (1) and the low-pressure side of the compressor (3) are connected with each device of the low-pressure storage loop.
2. The supercritical carbon dioxide power generation coaxial integrated apparatus and displacement energy storage system according to claim 1, wherein the high pressure side of the turbine (1) is arranged opposite to the high pressure side of the compressor (3).
3. The supercritical carbon dioxide power generation coaxial integrated equipment and the displacement type energy storage system according to claim 1, characterized in that in the unit starting stage, when the rotating speed of the turbine (1) is lower than that of the compressor (3), the overspeed clutch (2) is disengaged; in the unit operation stage, when the rotating speed of the turbine (1) is higher than that of the compressor (3), the overspeed clutch (2) is engaged; the overrunning clutch (2) can bear axial thrust.
4. The supercritical carbon dioxide power generation coaxial integrated equipment and the replacement type energy storage system according to claim 1, it is characterized in that the high-pressure storage loop equipment comprises a high-pressure storage loop inlet regulating valve (8), a high-pressure storage loop inlet check valve (9), a high-pressure storage loop cooler (10), a high-pressure storage loop liquid storage tank (11), a high-pressure storage loop outlet heater (12), a high-pressure storage loop outlet check valve (13) and a high-pressure storage loop outlet regulating valve (14) which are connected in sequence, the inlet of the high-pressure storage loop inlet adjusting valve (8) is connected with the high-pressure side of the compressor (3), the outlet of the high-pressure storage loop outlet adjusting valve (14) is connected with the high-pressure side of the turbine (1), and a main loop heater (6) is directly connected between the inlet of the high-pressure storage loop inlet adjusting valve (8) and the outlet of the high-pressure storage loop outlet adjusting valve (14).
5. The supercritical carbon dioxide power generation coaxial integrated equipment and the displacement energy storage system according to claim 1, wherein each equipment of the low-pressure storage loop comprises a low-pressure storage loop inlet regulating valve (15), a low-pressure storage loop inlet check valve (16), a low-pressure storage loop cooler (17), a low-pressure storage loop liquid storage tank (18), a low-pressure storage loop outlet heater (19), a low-pressure storage loop outlet check valve (20) and a low-pressure storage loop outlet regulating valve (21) which are connected in sequence, and each equipment of the low-pressure storage loop is arranged in parallel with the main loop cooler (7).
CN202121050291.7U 2021-05-17 2021-05-17 Coaxial integrated equipment for supercritical carbon dioxide power generation and replaceable energy storage system Active CN214660403U (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202121050291.7U CN214660403U (en) 2021-05-17 2021-05-17 Coaxial integrated equipment for supercritical carbon dioxide power generation and replaceable energy storage system
DE202021105147.7U DE202021105147U1 (en) 2021-05-17 2021-09-24 Coaxial integrated device for supercritical carbon dioxide power generation and exchangeable energy storage system

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Application Number Priority Date Filing Date Title
CN202121050291.7U CN214660403U (en) 2021-05-17 2021-05-17 Coaxial integrated equipment for supercritical carbon dioxide power generation and replaceable energy storage system

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GB2611041A (en) * 2021-09-22 2023-03-29 Abdul Qayum Dual-input motor
CN114111413B (en) * 2021-11-25 2023-10-27 青岛科技大学 Compression energy storage system adopting carbon dioxide mixed working medium and working method thereof
CN114991897B (en) * 2022-06-09 2024-01-19 西安热工研究院有限公司 Multistage expanded liquid carbon dioxide mixture energy storage system and pressure regulating method
CN115559792A (en) * 2022-10-09 2023-01-03 势加透博(成都)科技有限公司 Supercritical gas power generation device

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