CN113931694A - Comprehensive utilization water pumping energy storage system based on deep well - Google Patents

Comprehensive utilization water pumping energy storage system based on deep well Download PDF

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Publication number
CN113931694A
CN113931694A CN202111173019.2A CN202111173019A CN113931694A CN 113931694 A CN113931694 A CN 113931694A CN 202111173019 A CN202111173019 A CN 202111173019A CN 113931694 A CN113931694 A CN 113931694A
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China
Prior art keywords
water
deep well
storage system
turbine
pumping device
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CN202111173019.2A
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Chinese (zh)
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CN113931694B (en
Inventor
肖立业
张京业
邱清泉
聂子攀
王粟
唐文冰
郭文勇
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Institute of Electrical Engineering of CAS
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Institute of Electrical Engineering of CAS
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
    • E21F17/16—Modification of mine passages or chambers for storage purposes, especially for liquids or gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/06—Stations or aggregates of water-storage type, e.g. comprising a turbine and a pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B15/00—Controlling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2220/00—Application
    • F05B2220/70—Application in combination with
    • F05B2220/706—Application in combination with an electrical generator
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids

Abstract

The invention belongs to the technical field of mechanical energy storage, and aims to solve the problems that the existing water pumping energy storage system is difficult to build and cannot be popularized, in particular to a comprehensive utilization water pumping energy storage system based on a deep well, which comprises a control center, an above-ground water storage system, a deep well system, a water pumping device, a water turbine and a transformer, wherein the water pumping device and the water turbine are connected with the low-voltage side of the above-ground transformer; when electricity is needed, the water turbine is started, water flowing from the overground water storage system to the deep well system drives the water turbine to generate electricity, and electric energy is transmitted to a power grid through a transformer; when the electricity consumption is low, the control center starts the water pumping device to pump water in the deep well system to the ground water storage system so as to store gravitational potential energy; when the water in the deep well system is lowered to a preset height, the water turbine is closed; the system has the advantages of large energy storage capacity, small occupied area, distributable construction, environment friendliness, flexible site selection and suitability for large-scale popularization.

Description

Comprehensive utilization water pumping energy storage system based on deep well
Technical Field
The invention belongs to the technical field of mechanical energy storage, and particularly relates to a deep well-based comprehensive utilization water pumping energy storage system.
Background
The rapid development of renewable energy and the realization of clean energy revolution are important ways for realizing carbon peak reaching and carbon neutralization. The new energy power generation is influenced by weather conditions, so that the fluctuation is high, and the large-scale grid connection of the new energy power generation influences the stability of a power grid, so that the electricity abandoning phenomenon is generated. The energy storage technology is an important technical approach for effectively solving the grid-connected stability of new energy, is an important guarantee for large-scale efficient development and utilization of green and environment-friendly new energy and realizing green sustainable development strategy in the energy field of China.
The physical energy storage technologies such as water pumping energy storage, compressed air energy storage and the like have the advantages of safety, reliability, large-scale production, environmental friendliness, no pollution, good economy and the like, and the water pumping energy storage technology is mature and is widely applied. Firstly, the water pumping and energy storage is seriously dependent on the terrain and the topography, sufficient water resources and large terrain fall are required to be built for constructing upstream and downstream reservoirs, and the geographical resources for building the water pumping and energy storage in China are extremely limited and the site selection is difficult; the large-area upstream and downstream reservoirs are constructed, so that the ecological environment is greatly damaged, and a local ecological system is influenced; the above characteristics lead to the inability of wide application of pumped storage systems.
In the prior patent scheme, various forms of water pumping and energy storing systems are proposed by using abandoned mines. However, the site selection of the abandoned mine is limited, and only places with abandoned mines can be selected, and the national control of abandoned mines such as coal mines and the like is strict due to problems such as safety and the like; underground construction of abandoned mines is difficult and expensive due to problems of water seepage and soaking.
Disclosure of Invention
In order to solve the problems in the prior art, namely the problems that the existing water pumping energy storage system is difficult to build a site and cannot be popularized on a large scale, the invention provides a comprehensive utilization water pumping energy storage system based on a deep well, which comprises a control center, an above-ground water storage system, a deep well system, a water pumping device, a water turbine and a transformer, wherein the above-ground water storage system, the deep well system, the water pumping device, the water turbine and the transformer are in signal connection with the control center;
the water pumping device and the water turbine are connected with the low-voltage side of the transformer through cables; the transformer is arranged on the ground, the capacity and the low-voltage side voltage level of the transformer are matched with the rated voltages of the pumping device and the water turbine, and the high-voltage side voltage level of the transformer is matched with the voltage of a power grid;
the water pumping device is communicated with the overground water storage system and the deep well system through a water conveying pipeline system;
when electricity is needed, the control center starts the water turbine, water flowing to the bottom of the deep well system from the overground water storage system drives the water turbine to generate electricity, and electric energy is transmitted to a power grid through the transformer; when the water in the deep well system rises to a first set height, the water turbine is closed, and the energy storage system finishes discharging;
when the electricity consumption is low, the control center starts the water pumping device to pump the water in the deep well system to the ground water storage system so as to store the gravitational potential energy; and when the water in the deep well system is lowered to a second set height, the water turbine is closed, and the energy storage system is charged.
In some preferred embodiments, a water-free independent chamber is arranged below the deep well system, and the water pumping device and the water turbine are arranged in the chamber;
the water conveying pipeline system comprises a first water conveying pipeline and a second water conveying pipeline, the first water conveying pipeline is arranged between the deep well system and the cavity, and the second water conveying pipeline is arranged between the overground water storage system and the cavity;
the bottom of the deep well system is provided with a first opening and closing port communicated with the first water conveying pipeline; the bottom of the overground water storage system is provided with a second opening and closing port communicated with the second water conveying pipeline; the first opening and closing port and the second opening and closing port are in signal connection with the control center;
when electricity is needed, the control center starts the water turbine, and water flowing out of the first water conveying pipeline drives the water turbine to generate electricity.
In some preferred embodiments, the energy storage system further comprises a floating vessel floatingly disposed inside the deep well system;
the water pumping device and the water turbine are arranged in the floating container;
one end of a water suction pipeline of the water pumping device is positioned below the water surface of the deep well system, and the other end of the water suction pipeline is communicated with the overground water storage system;
one end of the water outlet end of the water turbine is positioned above the water surface of the deep well system, and the other end of the water outlet end of the water turbine is communicated with the overground water storage system.
In some preferred embodiments, the water pumping device and the water turbine are communicated with the above-ground water storage system through a pipeline shared by a three-way valve.
In some preferred embodiments, the above-ground water storage system is a landscape pool or pond in a city.
In some preferred embodiments, the above-ground water storage system is a swimming pool of a preset size, and a horizontal protective net is arranged at a preset height inside the swimming pool.
In some preferred embodiments, the preset height is 1.8 meters.
In some preferred embodiments, the size of the energy storage of the deep well system is matched with the capacity of the aboveground water storage system.
In some preferred embodiments, the water pumping device comprises one or more water pumps;
when the number of the water pumps is multiple, the multiple water pumps work cooperatively.
In some preferred embodiments, the number of the water turbines is multiple;
when the number of the water turbines is multiple, the multiple water turbines work in a coordinated mode.
The invention provides a deep well-based comprehensive utilization water pumping energy storage system, which has the characteristics of large energy storage capacity, small floor area, distributable construction and the like, is organically combined with urban landscape water or swimming pools to realize comprehensive utilization, and has the advantages of environmental friendliness, intrinsically safe system, no pollution, flexible site selection and the like. The invention can be implemented in places such as city roadside, park corner and the like where deep wells can be drilled, has flexible site selection, is suitable for large-scale popularization in new energy concentrated areas in China, and is also suitable for distributed application in urban areas with dense population and short land.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic structural diagram of a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second embodiment of the present invention.
Description of reference numerals: 1. an above-ground water storage system; 2. a deep well system; 3. a water pump; 4. a water turbine; 5. a transformer; 6. a cable; 7. a power grid; 8. a water pipe system; 9. a protective net; 10. a control center; 11. a floating vessel.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
The invention is further illustrated by the following examples with reference to the accompanying drawings.
Referring to the attached drawings 1 and 2, the invention provides a deep well-based comprehensive utilization water pumping energy storage system, which comprises a control center 10, an overground water storage system 1, a deep well system 2, a water pumping device, a water turbine 4 and a transformer 5, wherein the overground water storage system 1, the deep well system 2, a water pump 3, the water turbine 4 and the transformer 5 are in signal connection with the control center 10; the water pump 3 and the water turbine 4 are connected with the low-voltage side of the transformer 5 through a cable 6; the transformer 5 is arranged on the ground, the capacity and the low-voltage side voltage level of the transformer 5 are matched with the rated voltage of the water pump 3 and the water turbine 4, and the high-voltage side voltage level of the transformer 5 is matched with the voltage of the power grid 7;
the water pump 3 is communicated with the overground water storage system 1 and the deep well system 2 through a water pipeline system 8;
when electricity is needed, the control center 10 starts the water turbine 4, water flowing from the overground water storage system 1 to the bottom of the deep well system 2 drives the water turbine 4 to generate electricity, and electric energy is transmitted to the power grid 7 through the transformer 5; when the water in the deep well system 2 rises to a first set height, the water turbine 4 is closed, and the energy storage system finishes discharging;
when the electricity consumption is low, the control center starts the water pump 3 to pump water in the deep well system 1 to the ground water storage system 2 so as to store gravitational potential energy; when the water in the deep well system 1 is lowered to a second set height, the water turbine 4 is turned off, and the energy storage system is charged.
Referring to fig. 1, in a first embodiment of the present invention, a water-free independent chamber is provided below a deep well system, and a water pump 3 and a water turbine 4 are provided in the chamber; the water pipeline system 8 comprises a first water pipeline and a second water pipeline, the first water pipeline is arranged between the deep well system 2 and the chamber, and the second water pipeline is arranged between the overground water storage system 1 and the chamber; the bottom of the deep well system 2 is provided with a first opening and closing port communicated with a first water conveying pipeline;
the bottom of the overground water storage system 1 is provided with a second opening and closing port communicated with a second water conveying pipeline; the first opening and closing port and the second opening and closing port are in signal connection with the control center 10; when electricity is needed, the control center 10 starts the water turbine 4, and the water flowing out of the first water conveying pipeline drives the water turbine 4 to generate electricity. In the invention, the control center 10 is used for controlling the start and stop of the energy storage system, the start and stop of the water pump 3 and the water turbine 4 and the rotating speed.
In the embodiment, the water pump 3 and the water turbine 4 are fixedly arranged at the bottom of the deep well 2; an anhydrous independent space is built at the bottom of a deep well 2, a water pump 3 and a water turbine 4 are fixedly installed, the water pump 3 and the water turbine 4 are communicated with the bottom of the deep well system 2 through pipelines, the other end of the water pump is communicated with an overground water storage system 1, and the water pump 3 and the water turbine 4 are connected with the low-voltage side of an overground transformer 5 through cables.
In the initial state, the overground water storage system 1 is full of water, and the invention is in a full-charge state.
When a power grid or a user needs to generate power by the system, the water turbine 4 is started through the control center 10, water flows into the underground deep well system 2 from the overground water storage system 1 through the water conveying pipeline 8, the water turbine 4 is driven to generate power, and electric energy is conveyed to the power grid through the transformer 5; and when the water in the deep well system reaches the set water level, the water turbine is closed, and the energy storage system finishes discharging.
When a power grid or a new energy power station needs to charge the system, a control center starts a water pump, the water pump pumps water in a deep well system into an above-ground water storage system through a water conveying pipeline, and electric energy is converted into gravitational potential energy of the water in the above-ground water storage system 1; and when the water in the deep well system 2 reaches the set water level, the water pump 3 is closed, and the energy storage system is charged.
Referring to fig. 2, in a second embodiment of the present invention, the energy storage system further comprises a floating container 11, which is floated on the water surface inside the deep well system; the water pumping device and the water turbine are arranged in the floating container; one end of a water suction pipeline of the water pumping device is always positioned below the water surface of the deep well system, and the other end of the water suction pipeline is communicated with an above-ground water storage system; one end of the water outlet end of the water turbine is always positioned above the water surface of the deep well system, and the other end of the water outlet end of the water turbine is communicated with the overground water storage system. In this embodiment, the charging and discharging principle and process of the energy storage system are the same as those of the first embodiment.
Preferably, the water pumping device and the water turbine share one pipeline to be communicated with the ground water storage system through a three-way valve.
Further, the above-ground water storage system can be a landscape pool or pond in a city, and has ornamental and leisure value.
Or the ground water storage system is a swimming pool with a preset scale, and a horizontal protective net 9 is arranged at a preset height inside the swimming pool; the depth of the swimming pool is set according to the stored energy.
Wherein the preset height is 1.8 meters.
Preferably, the scale of the energy storage of the deep well system is matched with the capacity of the ground water storage system.
Preferably, the water pumping means comprise one or more water pumps 3; when the number of the water pumps is multiple, the multiple water pumps work cooperatively and are used for pumping water in the deep well system into the ground water storage system and converting electric energy into gravitational potential energy of the water.
Preferably, the number of the water turbines is multiple; when the number of the water turbines is multiple, the multiple water turbines work in a coordinated mode; when water in the overground water storage system flows to the deep well system through the water conveying pipeline, the water turbine is driven to generate electricity, and the gravitational potential energy of the water is converted into electric energy.
While the invention has been described with reference to a preferred embodiment, various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention, and particularly, features shown in the various embodiments may be combined in any suitable manner without departing from the scope of the invention. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings, which are for convenience of description only, and do not indicate or imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting 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.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The terms "comprises," "comprising," or any other similar term are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.

Claims (10)

1. A comprehensive utilization water pumping energy storage system based on a deep well is characterized by comprising a control center, an above-ground water storage system, a deep well system, a water pumping device, a water turbine and a transformer, wherein the above-ground water storage system, the deep well system, the water pumping device, the water turbine and the transformer are in signal connection with the control center;
the water pumping device and the water turbine are connected with the low-voltage side of the transformer through cables; the transformer is arranged on the ground, the capacity and the low-voltage side voltage level of the transformer are matched with the rated voltages of the pumping device and the water turbine, and the high-voltage side voltage level of the transformer is matched with the voltage of a power grid;
the water pumping device is communicated with the overground water storage system and the deep well system through a water conveying pipeline system;
when electricity is needed, the control center starts the water turbine, water flowing to the bottom of the deep well system from the overground water storage system drives the water turbine to generate electricity, and electric energy is transmitted to a power grid through the transformer; when the water in the deep well system rises to a first set height, the water turbine is closed, and the energy storage system finishes discharging;
when the electricity consumption is low, the control center starts the water pumping device to pump the water in the deep well system to the ground water storage system so as to store the gravitational potential energy; and when the water in the deep well system is lowered to a second set height, the water turbine is closed, and the energy storage system is charged.
2. The deep well-based comprehensive utilization pumped storage system according to claim 1, wherein a water-free independent chamber is arranged below the deep well system, and the pumping device and the water turbine are arranged in the chamber;
the water conveying pipeline system comprises a first water conveying pipeline and a second water conveying pipeline, the first water conveying pipeline is arranged between the deep well system and the cavity, and the second water conveying pipeline is arranged between the overground water storage system and the cavity;
the bottom of the deep well system is provided with a first opening and closing port communicated with the first water conveying pipeline; the bottom of the overground water storage system is provided with a second opening and closing port communicated with the second water conveying pipeline; the first opening and closing port and the second opening and closing port are in signal connection with the control center;
when electricity is needed, the control center starts the water turbine, and water flowing out of the first water conveying pipeline drives the water turbine to generate electricity.
3. The deep well based comprehensive utilization pumped storage system according to claim 1, further comprising a floating container, wherein the floating container is arranged inside the deep well system in a floating manner;
the water pumping device and the water turbine are arranged in the floating container;
one end of a water suction pipeline of the water pumping device is positioned below the water surface of the deep well system, and the other end of the water suction pipeline is communicated with the overground water storage system;
one end of the water outlet end of the water turbine is positioned above the water surface of the deep well system, and the other end of the water outlet end of the water turbine is communicated with the overground water storage system.
4. The deep well-based comprehensive utilization pumped storage system according to claim 3, wherein the pumping device and the water turbine share a pipeline to communicate with the above-ground water storage system through a three-way valve.
5. The deep well based comprehensive utilization pumped storage system according to claim 1, wherein the above-ground water storage system is a landscape pool or pond in a city.
6. The deep well-based comprehensive utilization pumped storage system according to claim 1, wherein the above-ground water storage system is a swimming pool of a preset size, and a horizontal protective net is arranged at a preset height inside the swimming pool.
7. The deep well based comprehensive utilization pumped storage system according to claim 6, wherein the preset height is 1.8 meters.
8. The deep well based comprehensive utilization pumped storage system according to claim 1, wherein the scale of the energy storage of the deep well system is matched with the capacity of the aboveground water storage system.
9. The deep well based energy storage system for comprehensive utilization of pumped water according to claim 1, wherein the pumping means comprises one or more water pumps;
when the number of the water pumps is multiple, the multiple water pumps work cooperatively.
10. The deep well-based comprehensive utilization pumped storage system according to claim 1, wherein the number of the water turbines is one;
when the number of the water turbines is multiple, the multiple water turbines work in a coordinated mode.
CN202111173019.2A 2021-10-08 2021-10-08 Comprehensive utilization water pumping energy storage system based on deep well Active CN113931694B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1040181A (en) * 1962-02-17 1966-08-24 Gaz De France Improvements in or relating to underground gas storage tanks
CN108716447A (en) * 2018-05-04 2018-10-30 中国神华能源股份有限公司 Power-generation energy-storage peak regulation system and method
CN108895017A (en) * 2018-07-09 2018-11-27 中国矿业大学 A kind of multistage constant pressure compression air energy-storing apparatus
CN108916105A (en) * 2018-07-09 2018-11-30 中国矿业大学 A kind of constant pressure compression air energy-storing apparatus
CN112065633A (en) * 2020-08-14 2020-12-11 西安交通大学 Underground pumped storage system and method with abandoned mine as energy storage container

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1040181A (en) * 1962-02-17 1966-08-24 Gaz De France Improvements in or relating to underground gas storage tanks
CN108716447A (en) * 2018-05-04 2018-10-30 中国神华能源股份有限公司 Power-generation energy-storage peak regulation system and method
CN108895017A (en) * 2018-07-09 2018-11-27 中国矿业大学 A kind of multistage constant pressure compression air energy-storing apparatus
CN108916105A (en) * 2018-07-09 2018-11-30 中国矿业大学 A kind of constant pressure compression air energy-storing apparatus
CN112065633A (en) * 2020-08-14 2020-12-11 西安交通大学 Underground pumped storage system and method with abandoned mine as energy storage container

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