CN216429702U - Gravity compressed air energy storage system based on coal yard of thermal power plant - Google Patents
Gravity compressed air energy storage system based on coal yard of thermal power plant Download PDFInfo
- Publication number
- CN216429702U CN216429702U CN202123115335.2U CN202123115335U CN216429702U CN 216429702 U CN216429702 U CN 216429702U CN 202123115335 U CN202123115335 U CN 202123115335U CN 216429702 U CN216429702 U CN 216429702U
- Authority
- CN
- China
- Prior art keywords
- stage
- heat exchanger
- outlet
- coal yard
- inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a gravity compressed air energy storage system based on a coal yard of a thermal power plant, wherein a bearing plate of the coal yard is hermetically connected with the upper end of an air storage chamber; the input ends of the first-stage compressor and the second-stage compressor are connected with a motor, the outlet of the first-stage compressor is connected with the heat inlet of the first-stage intermediate heat exchanger, and the heat outlet of the first-stage intermediate heat exchanger is connected with the inlet of the second-stage compressor; the outlet of the secondary compressor is connected with the heat inlet of the first-stage rear heat exchanger, and the heat outlet of the first-stage rear heat exchanger is communicated with the air storage chamber; the output ends of the first-stage expansion machine and the second-stage expansion machine are connected with a generator, and the outlet of the air storage chamber is connected with the cold inlet of the second-stage front heat exchanger; the inlet of the first-stage expansion machine is connected with the cold outlet of the second front heat exchanger, the outlet of the first-stage expansion machine is connected with the cold inlet of the second intermediate heat exchanger, and the inlet of the second-stage expansion machine is connected with the cold outlet of the interstage heat exchanger; the inlets and outlets of the heat storage tank and the cold storage tank are connected with the heat exchangers. The utility model discloses two kinds of energy storage technologies of gravity and compressed air have been coupled.
Description
Technical Field
The utility model belongs to the technical field of energy storage, concretely relates to gravity compressed air energy storage system based on coal yard of thermal power plant.
Background
In recent years, with the acceleration of global energy structure to renewable energy transformation and the proposal of double-carbon targets in China, new energy is gradually developing to a main power supply, and according to estimation, the proportion of the generated energy of the clean energy in 2060 year is estimated to reach 93%. High proportion renewable energy puts forward higher requirement to the electric wire netting and adjusts the flexibility, and energy storage system demand breach is huge. On the other hand, in the future, a large number of low-parameter small thermal power units face fate which is gradually shut down and eliminated, and high-parameter large thermal power units face deep peak regulation, flexible operation and other problems.
At present, the energy storage technologies applied in large scale mainly comprise pumped storage, compressed air storage, electrochemical storage, gravity storage and the like. Due to poor safety of electrochemical energy storage, accidents of lithium battery energy storage power stations occur frequently in recent years; pumped storage is greatly limited by geographical conditions and has unpredictable influence on the ecological environment; the gravity energy storage system has the advantages of high energy storage efficiency, high response speed, low construction cost and long operation time, but the gravity energy storage system has low energy density and overlarge construction scale, and has no commercial application at present. The traditional compressed air energy storage system has the advantages of large energy storage capacity, high energy density, low construction and operation cost and long operation time, but has low efficiency and is greatly limited by geographical conditions, and is difficult to apply to thermal power plants.
SUMMERY OF THE UTILITY MODEL
In order to overcome above-mentioned prior art's shortcoming, the utility model aims to provide a gravity compressed air energy storage system based on thermal power plant's coal yard, this system and method have coupled two kinds of energy storage techniques and have carried out the organic combination with thermal power plant, have energy storage energy density height and arrange nimble characteristics, can realize thermal power plant's flexibility operation, the regulation flexibility when reinforcing electric wire netting absorbs renewable energy.
The utility model adopts the technical scheme as follows:
a gravity compressed air energy storage system based on a coal yard of a thermal power plant comprises a primary compressor, a secondary compressor, a primary expander, a secondary expander, a first inter-stage heat exchanger, a first post-stage heat exchanger, a second pre-stage heat exchanger, a second inter-stage heat exchanger, a heat storage tank, a cold storage tank and a gravity compressed air energy storage unit of the coal yard of the thermal power plant;
the gravity compressed air energy storage unit of the coal yard of the thermal power plant comprises an air storage chamber and a coal yard bearing plate for placing raw coal stacks, wherein the coal yard bearing plate is connected with the upper end of the air storage chamber in a sealing manner and can move up and down relative to the air storage chamber;
the power input ends of the first-stage compressor and the second-stage compressor are connected with motors, the outlet of the first-stage compressor is connected with the heat inlet of the first inter-stage heat exchanger through a gas pipeline, and the heat outlet of the first inter-stage heat exchanger is connected with the inlet of the second-stage compressor through a gas pipeline; the outlet of the secondary compressor is connected with the heat inlet of the first-stage rear heat exchanger through a pipeline, and the heat outlet of the first-stage rear heat exchanger is communicated with the air storage chamber;
the power output ends of the secondary expander and the primary expander are connected with a generator, the outlet of the air storage chamber is connected with the cold inlet of the second-stage front heat exchanger through a pipeline, and the pipeline is provided with a pressure regulating valve; the inlet of the first-stage expansion machine is connected with the cold outlet of the second front heat exchanger, the outlet of the first-stage expansion machine is connected with the cold inlet of the second intermediate heat exchanger, and the inlet of the second-stage expansion machine is connected with the cold outlet of the interstage heat exchanger;
cold outlets of the first-stage intermediate heat exchanger and the first-stage rear heat exchanger are both connected with an inlet of the heat storage tank, and cold inlets of the first-stage intermediate heat exchanger and the first-stage rear heat exchanger are both connected with an outlet of the cold storage tank;
the heat inlets of the first-stage front heat exchanger and the second-stage intermediate heat exchanger are connected with the outlet of the heat storage tank, and the heat outlets of the first-stage front heat exchanger and the second-stage intermediate heat exchanger are connected with the inlet of the cold storage tank.
Preferably, the gravity compressed air energy storage unit of the coal yard of the thermal power plant comprises a plurality of air storage chambers, and each air storage chamber is correspondingly provided with a coal yard bearing plate.
Preferably, the edge of the upper end of the gas storage chamber and the edge of the coal yard bearing plate are both provided with a coal baffle plate, and a door is arranged on the coal baffle plate.
Preferably, the air storage chamber and the coal yard bearing plate form a cylinder-piston system, and a sealing device is arranged between the inner wall of the air storage chamber and the outer wall of the coal yard bearing plate.
Preferably, the heat storage tank is arranged in a single-tank arrangement or a double-tank arrangement; the cold storage tanks are arranged in a single-tank arrangement mode or a double-tank arrangement mode.
Preferably, the inlet and the outlet of the heat storage tank are both provided with a circulating pump, and the inlet and the outlet of the cold storage tank are both provided with a circulating pump.
Preferably, the primary compressor and the secondary compressor are arranged coaxially or in split-shaft arrangement.
Preferably, the first-stage expander and the second-stage expander are arranged coaxially or in a split-shaft manner.
Compared with the prior art, the utility model discloses following profitable technological effect has:
the utility model discloses when the gravity compressed air energy storage system based on coal yard of thermal power plant is specifically operated, organically combine two kinds of energy storage techniques of compressed air energy storage, gravity energy storage to with this facility coupling of coal fired power plant coal yard, compare with traditional compressed air energy storage system, the gas pressure can keep invariable in the gas receiver of the utility model, has effectively reduced valve throttling loss, and the gas receiver energy storage density is high; the volume of the air storage chamber can be obviously reduced, and flexible partition arrangement can be performed according to the size of a coal yard; compare in gravity energy storage system, the utility model discloses a release the energy source and had more compressed air ability, and the pouring weight can be for the coal yard bearing plate rather than the raw coal stack that bears, has further reduced system material cost. In addition, the heat conducting working medium absorbs the heat released by the compressed air in the energy storage stage and is stored in the heat storage tank, and the heat conducting working medium enters the heat exchanger to heat the compressed air and then returns to the cold storage tank in the energy release stage, so that the compressed air is further heated and expanded to do work, the fire using loss of the system is reduced, and the overall efficiency of the system is improved. The utility model discloses a gravity compressed air energy storage system based on coal yard of thermal power plant has that energy storage capacity is big, than investment low, long service life, efficient, system security is good, response speed is fast, with advantages such as coal-fired power plant compatibility is good, can further exert coal-fired unit peak regulation effect, reinforcing electric wire netting flexibility delays coal-fired unit retirement time.
Drawings
Fig. 1 is the utility model discloses gravity compressed air energy storage system's structural schematic based on thermal power plant's coal yard.
Wherein, 1 is a primary compressor, 2 is a secondary compressor, 3 is a primary expander, 4 is a secondary expander, 5 is a first-stage heat exchanger, 6 is a first-stage rear heat exchanger, 7 is a second-stage front heat exchanger, 8 is a second-stage heat exchanger, 9 is a circulating pump, 10 is a heat storage tank, 11 is a cold storage tank, 12 is a gas storage chamber, 13 is a sealing device, 14 is a coal yard bearing plate, 15 is a raw coal stack, and 16 is a pressure regulating valve.
Detailed Description
In order to make the technical solution of the present invention better understood, the following figures in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments, and do not limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
A schematic structural diagram according to an embodiment of the present disclosure is shown in the drawings. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity of presentation. The shapes of various regions, layers and their relative sizes and positional relationships shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, according to actual needs.
Referring to fig. 1, the utility model discloses gravity compressed air energy storage system based on coal yard of thermal power plant includes primary compressor 1, secondary compressor 2, primary expander 3, secondary expander 4, first grade heat exchanger 5, first grade rear heat exchanger 6, second grade front heat exchanger 7, second grade heat exchanger 8, heat storage tank 10, cold storage tank 11 and coal yard gravity compressed air energy storage unit of thermal power plant; the gravity compressed air energy storage unit for the coal yard of the thermal power plant comprises an air storage chamber 12 and a coal yard bearing plate 14 used for placing a raw coal stack 15, wherein the coal yard bearing plate 14 is connected with the upper end of the air storage chamber 12 in a sealing manner, and the coal yard bearing plate 14 can move up and down relative to the air storage chamber 12; the power input ends of the primary compressor 1 and the secondary compressor 2 are connected with motors, the inlet of the primary compressor 1 is communicated with the atmosphere, the outlet of the primary compressor 1 is connected with the heat inlet of the first inter-stage heat exchanger 5 through a gas pipeline, and the heat outlet of the first inter-stage heat exchanger 5 is connected with the inlet of the secondary compressor 2 through a gas pipeline; the outlet of the secondary compressor 2 is connected with the heat inlet of the first-stage rear heat exchanger 6 through a pipeline, and the heat outlet of the first-stage rear heat exchanger 6 is communicated with the air storage chamber 12; the power output ends of the secondary expansion machine 4 and the primary expansion machine 3 are connected with a generator, the outlet of the air storage chamber 12 is connected with the cold inlet of the secondary front heat exchanger 7 through a pipeline, and the pipeline is provided with a pressure regulating valve 16; an inlet of the first-stage expansion machine 3 is connected with a cold outlet of the second front-stage heat exchanger 7, an outlet of the first-stage expansion machine 3 is connected with a cold inlet of the second intermediate heat exchanger 8, an inlet of the second-stage expansion machine 4 is connected with a cold outlet of the interstage heat exchanger 8, and an outlet of the second-stage expansion machine 4 is discharged to the atmosphere; cold outlets of the first-stage intermediate heat exchanger 5 and the first-stage rear heat exchanger 6 are both connected with an inlet of the heat storage tank 10, and cold inlets of the first-stage intermediate heat exchanger 5 and the first-stage rear heat exchanger 6 are both connected with an outlet of the cold storage tank 11; the heat inlets of the second-stage front heat exchanger 7 and the second-stage intermediate heat exchanger 8 are connected with the outlet of the heat storage tank 10, and the heat outlets of the second-stage front heat exchanger 7 and the second-stage intermediate heat exchanger 8 are connected with the inlet of the cold storage tank 11.
Furthermore, after the coal yard bearing plate 14 stacks the raw coal stacks 15, the gas storage units formed by the gas storage chamber 12, the coal yard bearing plate 14 and the raw coal stacks 15 can be divided into a plurality of units according to the construction scale. The coal yard bearing plate 14 and the raw coal stack 15 together form a gravity module, which is positioned at the top of the gas storage chamber 12 and forms a cylinder-piston system, and a sealing device 13 is arranged between the inner wall of the gas storage chamber 12 and the outer wall of the coal yard bearing plate 14. The cylinder-piston type structure is relatively simple and reliable, and the compressed air storage capacity is large. Coal blocking plates are arranged on the edge of the upper end of the gas storage chamber 12 and the edge of the coal yard bearing plate 14, so that coal on the coal yard bearing plate 14 is prevented from falling into a space between the gas storage chamber 12 and the coal yard bearing plate 14, and normal up-and-down movement of the coal yard bearing plate 14 is prevented from being influenced. The coal baffle is provided with a door, so that normal coal conveying operation can be ensured.
Further, in the technical scheme of the present invention, according to the actual requirement, both the heat storage tank 10 and the cold storage tank 11 can be arranged in a single tank or in double tanks; and circulating pumps 9 are arranged at the inlets and outlets of the heat storage tank 10 and the cold storage tank 11 to ensure the circulation of the heat-conducting medium.
Furthermore, according to the technical scheme of the utility model, the primary compressor 1 and the secondary compressor 2 can be arranged coaxially or in a split-shaft manner and then driven by the motor to do work according to the actual requirement; the first-stage expander 3 and the second-stage expander 4 can be arranged coaxially or in a split-shaft mode, and then the generators are driven to generate electricity.
The working method of the gravity compressed air energy storage system based on the coal yard of the thermal power plant comprises the following stages:
in the energy storage stage, the electric motor is driven by utilizing the valley electricity of a power grid or the peak power regulation of a thermal power plant to drive the primary compressor 1 and the secondary compressor 2 to start compression and work, high-temperature and high-pressure gas enters the gas storage chamber 12 for storage after being cooled by the interstage heat exchanger 5 and the post-stage heat exchanger 6, and the height of a gravity module consisting of a coal yard bearing plate 14 and a raw coal stack 15 is raised. The heat-conducting medium is pumped out from the cold storage tank 11, absorbs the heat of the compressed air in the first-stage intermediate heat exchanger 5 and the first-stage rear heat exchanger 6 and is stored in the heat storage tank 10;
in the energy release stage, at the peak power consumption stage or peak power consumption stage of the power grid, the height of a gravity module formed by the coal yard bearing plate 14 and the raw coal stack 15 is reduced, meanwhile, after the pressure of high-pressure air in the air storage chamber 12 is constant through the pressure regulating valve 16, the high-pressure air is heated step by step through the second-stage front heat exchanger 7 and the second-stage intermediate heat exchanger 8 to become high-temperature high-pressure air, and then the high-temperature high-pressure air is expanded through the first-stage expander 3 and the second-stage expander 4 to do work to drive the generator to generate electricity. The high-temperature heat-conducting medium in the heat storage tank 10 is released in the heat exchanger and then enters the cold storage tank 11 for storage.
The present invention is further explained below with reference to a specific embodiment:
the pressure of the air storage chamber of the gravity compressed air energy storage system is 11.6MPa, and in order to realize the 4h energy storage scale of 30MW/120MWh, the total area of the air storage chamber 12 (which can be constructed in a partitioning way) is20000m2The ground height is 1m, the underground height is 2m, the weight of the bearing plate 14 of the coal yard is about 5 ten thousand tons, and the weight of the raw coal stack 15 is about 1 ten thousand tons. The two-stage compressor is adopted for compression energy storage, the two-stage expander is adopted for expansion work power generation, the gravity compressed air energy storage system can keep the air storage chamber in a constant pressure state when working, throttling loss is reduced, the efficiency of the whole energy storage and release stage can reach 72%, and the energy storage efficiency of the system can reach 67% after the unavoidable fire loss is considered. Has large energy storage capacity (30-100 MW) and low specific investment (<7000 yuan/KW), long service life (30-40 years), high efficiency (about 65%), good system safety, high response speed, good compatibility with coal-fired power stations and the like.
It can be seen that the utility model discloses combine two kinds of energy storage techniques of compressed air energy storage, gravity energy storage to with this facility coupling in coal fired power plant coal yard, have that energy storage capacity is big, than the investment low, the operation is longe-lived, efficient, the system security is good, response speed is fast, with advantages such as coal fired power plant compatibility is good, can further exert coal-fired unit peak regulation effect, reinforcing electric wire netting flexibility delays coal-fired unit retires time.
Claims (8)
1. A gravity compressed air energy storage system based on a coal yard of a thermal power plant is characterized by comprising a primary compressor (1), a secondary compressor (2), a primary expansion machine (3), a secondary expansion machine (4), a first inter-stage heat exchanger (5), a first post-stage heat exchanger (6), a second pre-stage heat exchanger (7), a second inter-stage heat exchanger (8), a heat storage tank (10), a cold storage tank (11) and a gravity compressed air energy storage unit of the coal yard of the thermal power plant;
the gravity compressed air energy storage unit for the coal yard of the thermal power plant comprises an air storage chamber (12) and a coal yard bearing plate (14) used for placing a raw coal stack (15), wherein the coal yard bearing plate (14) is connected with the upper end of the air storage chamber (12) in a sealing manner, and the coal yard bearing plate (14) can move up and down relative to the air storage chamber (12);
the power input ends of the first-stage compressor (1) and the second-stage compressor (2) are connected with motors, the outlet of the first-stage compressor (1) is connected with the heat inlet of the first inter-stage heat exchanger (5) through a gas pipeline, and the heat outlet of the first inter-stage heat exchanger (5) is connected with the inlet of the second-stage compressor (2) through a gas pipeline; an outlet of the secondary compressor (2) is connected with a heat inlet of the first-stage rear heat exchanger (6) through a pipeline, and a heat outlet of the first-stage rear heat exchanger (6) is communicated with the air storage chamber (12);
the power output ends of the secondary expander (4) and the primary expander (3) are connected with a generator, the outlet of the air storage chamber (12) is connected with the cold inlet of the second-stage front heat exchanger (7) through a pipeline, and the pipeline is provided with a pressure regulating valve (16); the inlet of the first-stage expansion machine (3) is connected with the cold outlet of the second front-stage heat exchanger (7), the outlet of the first-stage expansion machine (3) is connected with the cold inlet of the second inter-stage heat exchanger (8), and the inlet of the second-stage expansion machine (4) is connected with the cold outlet of the inter-stage heat exchanger (8);
cold outlets of the first-stage intermediate heat exchanger (5) and the first-stage rear heat exchanger (6) are connected with an inlet of the heat storage tank (10), and cold inlets of the first-stage intermediate heat exchanger (5) and the first-stage rear heat exchanger (6) are connected with an outlet of the cold storage tank (11);
the heat inlets of the second-stage front heat exchanger (7) and the second-stage intermediate heat exchanger (8) are connected with the outlet of the heat storage tank (10), and the heat outlets of the second-stage front heat exchanger (7) and the second-stage intermediate heat exchanger (8) are connected with the inlet of the cold storage tank (11).
2. The gravity compressed air energy storage system based on the coal yard of the thermal power plant as claimed in claim 1, characterized in that the gravity compressed air energy storage unit of the coal yard of the thermal power plant comprises a plurality of air storage chambers (12), and each air storage chamber (12) is correspondingly provided with a coal yard bearing plate (14).
3. The gravity compressed air energy storage system based on the coal yard of the thermal power plant as claimed in claim 1, characterized in that the edges of the upper end of the gas storage chamber (12) and the edges of the coal yard bearing plate (14) are provided with coal blocking plates, and the coal blocking plates are provided with doors.
4. The gravity compressed air energy storage system based on the coal yard of the thermal power plant as claimed in claim 1, characterized in that the air storage chamber (12) and the coal yard bearing plate (14) form a cylinder-piston system, and a sealing device (13) is arranged between the inner wall of the air storage chamber (12) and the outer wall of the coal yard bearing plate (14).
5. The gravity compressed air energy storage system based on the coal yard of the thermal power plant is characterized in that the heat storage tank (10) is arranged in a single-tank arrangement or a double-tank arrangement; the cold storage tank (11) is arranged in a single-tank arrangement or a double-tank arrangement.
6. The gravity compressed air energy storage system based on the coal yard of the thermal power plant as claimed in claim 1, characterized in that the inlet and the outlet of the heat storage tank (10) are both provided with a circulating pump (9), and the inlet and the outlet of the cold storage tank (11) are both provided with a circulating pump (9).
7. The gravity compressed air energy storage system based on the coal yard of the thermal power plant is characterized in that the primary compressor (1) and the secondary compressor (2) are arranged coaxially or in a split shaft manner.
8. The gravity compressed air energy storage system based on the coal yard of the thermal power plant is characterized in that the primary expansion machine (3) and the secondary expansion machine (4) are arranged coaxially or in a split shaft mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123115335.2U CN216429702U (en) | 2021-12-10 | 2021-12-10 | Gravity compressed air energy storage system based on coal yard of thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123115335.2U CN216429702U (en) | 2021-12-10 | 2021-12-10 | Gravity compressed air energy storage system based on coal yard of thermal power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216429702U true CN216429702U (en) | 2022-05-03 |
Family
ID=81316820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123115335.2U Active CN216429702U (en) | 2021-12-10 | 2021-12-10 | Gravity compressed air energy storage system based on coal yard of thermal power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216429702U (en) |
-
2021
- 2021-12-10 CN CN202123115335.2U patent/CN216429702U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103225598B (en) | The method and system of a kind of pressurized air and heat-storage medium energy storage simultaneously | |
| CN114135349B (en) | Thermal power plant waste heat recycling method and energy storage power generation system coupled with thermal power plant | |
| CN102839995B (en) | Isothermal-isobaric compressed air energy storage system | |
| CN111255720B (en) | Temperature control variable working condition operation system based on heat accumulation type compressed air energy storage | |
| CN113006889B (en) | Adiabatic near-isothermal compressed air energy storage system and operation method thereof | |
| CN103410616A (en) | High-capacity compressed air energy storage efficient power generating system | |
| CN114087046A (en) | Gravity compressed air energy storage system and method based on coal yard of thermal power plant | |
| CN216381532U (en) | Compressed air energy storage system | |
| CN111412126B (en) | Compressed air energy storage system and energy storage method | |
| CN110578666A (en) | Hydraulic constant-pressure double-effect compressed air energy storage system | |
| CN102352777B (en) | Energy-storage and power-generation system and method of reversible single-screw compression expansion machine | |
| CN203892021U (en) | Compressed air energy storage system for integrated absorption type refrigeration | |
| CN114033517A (en) | Geothermal power generation and cold and heat supply system based on carbon dioxide compression energy storage and operation method | |
| CN202117718U (en) | Isothermal-isobaric compressed air energy storage system | |
| CN114352373A (en) | Regenerative energy storage power generation method and power generation system thereof | |
| CN113389713A (en) | Supercharged compressed air energy storage system | |
| CN106677988B (en) | Wind-solar energy storage system | |
| CN112780363A (en) | Underwater compressed air energy storage and peak regulation system and method driven by backpressure small steam turbine | |
| CN216429702U (en) | Gravity compressed air energy storage system based on coal yard of thermal power plant | |
| CN203272071U (en) | System with compressed air and heat storage media storing energy simultaneously | |
| CN114278535A (en) | Compressed air energy storage and salt cavern coupling system and utilization method | |
| CN114961910A (en) | Series-parallel connection combined type compressed air energy storage device system and method | |
| CN214944466U (en) | Compressed air-gas double-working medium combined cycle power generation system | |
| CN214303958U (en) | Underwater compressed air energy storage and peak regulation system driven by backpressure small steam turbine | |
| CN114893298A (en) | Closed refrigeration energy storage power generation system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |