CN106677969A - Energy storage device - Google Patents

Energy storage device Download PDF

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Publication number
CN106677969A
CN106677969A CN201710098879.1A CN201710098879A CN106677969A CN 106677969 A CN106677969 A CN 106677969A CN 201710098879 A CN201710098879 A CN 201710098879A CN 106677969 A CN106677969 A CN 106677969A
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CN
China
Prior art keywords
tank
water
pressure
air
valve
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CN201710098879.1A
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Chinese (zh)
Inventor
王政玉
王超颖
岑陈
张玉芹
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Individual
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Individual
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Priority to CN201710098879.1A priority Critical patent/CN106677969A/en
Publication of CN106677969A publication Critical patent/CN106677969A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03BMACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/06Stations or aggregates of water-storage type, e.g. comprising a turbine and a pump
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K25/00Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
    • F01K25/08Plants 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K27/00Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B41/00Pumping installations or systems specially adapted for elastic fluids
    • F04B41/02Pumping installations or systems specially adapted for elastic fluids having reservoirs
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B45/00Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
    • F04B45/04Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
    • F04B45/053Pumps having fluid drive
    • F04B45/0536Pumps having fluid drive the actuating fluid being controlled by one or more valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/02Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
    • F28D20/025Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat the latent heat storage material being in direct contact with a heat-exchange medium or with another heat storage material
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/20Hydro energy
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14Thermal energy storage
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/16Mechanical energy storage, e.g. flywheels or pressurised fluids

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

The invention provides an energy storage device. The energy storage device comprises a power pump, an air pressure tank, a water turbine generator set, a water storage tank, a phase change energy storage device, pipelines, valves and the like. Diaphragms are both installed in the air pressure tank and the water storage tank. A high-pressure air cavity of the air pressure tank and a low-pressure air cavity of the water storage tank further communicate with the phase change energy storage device. The phase change energy storage device comprises a high-pressure working medium storage tank, a low-pressure working medium storage tank, a compressor, a phase change working medium and the like. The energy storage device has the functions of water lifting, water storage, water heating, water pumping and compressed air energy storage power generation, phase change heat storage power generation or has the above multiple functions at the same time and is large in energy storage density, convenient to install and use and especially suitable for distributed energy resources and microgrids.

Description

A kind of energy storage device
Technical field
The invention belongs to heating power and fluid machinery category, it is related to energy storage technology, energy storage of particularly drawing water, compressed air storage Can, heating power phase-change accumulation energy and for generating electricity, heating water, cooling and the system of water supply.
Background technology
Currently, power energy storage is primarily to problem of both solving, one is to solve daytime and evening and due to season The power supply and demand on power network that the change of section property is caused is uneven.Two is to solve to be subject to natural conditions due to renewable energy power generation Influence, the power supply instability and intermittent power supply for causing.Imbalance problem between these generated energy and power consumption, to power system Safe operation cause very big trouble, also substantially reduce the effective rate of utilization of energy.In order to solve these problems, people Energy storage technology peak load shifting is taken, excessive generated energy is stored, power network is supplemented in when power consumption demand is big.Supplying Electric aspect, energy storage technology is able to maintain that power system stability is run, it is to avoid because impact of the power consumption fluctuation to power network, reduces electricity Net consumption.In terms of electricity consumption, user can select the storage and release of electric energy according to the peak-to-valley value of electricity price, improve the economy of electricity consumption Benefit.Meanwhile, the key technology of energy-storage system or distributed energy resource system, distributed formula energy resource system uses great quantity of small Distributed energy resource system replaces conventional large centralised energy resource system, also, because the capacity of system is smaller, the ripple of system loading It is dynamic also to increase considerably, therefore, as load equalizer it is that distributed energy resource system must be examined using energy storage system The measure of worry.
Current existing energy storage technology includes draw water energy storage, compressed-air energy storage, batteries to store energy, superconducting energy storage, flywheel Energy storage and ultracapacitor energy storage, phase-change thermal storage energy storage etc., but due to capacity, the energy storage cycle, energy density, efficiency for charge-discharge, The factor influences such as life-span, investment operating cost, environmental protection, natural conditions, that has been run in large scale business system at present only takes out Two kinds of water energy storage and compressed-air energy storage.
Energy-accumulating power station system of drawing water has the advantages that technology maturation, efficiency high, capacity are big, is current most widely used storage Can electricity generation system.But the energy-storing and power-generating system that draws water needs special geographical conditions to build reservoir and dam, and addressing is difficult, while Construction period is long, investment is big, ambient influnence is big, therefore suffers from many limitations.
Compressed air energy storage power generating system, technology is simultaneously uncomplicated, but generally needs suitable cave or mine to store height Pressure air, this greatly limits the development of air energy storage;Additionally, compressed air pressure during release constantly reduces, it is Ensure expanding machine stable operation, it is necessary to be used after stable-pressure device is by pressure-air reducing pressure by regulating flow, or it is steady to ensure turbine Fixed operation, burning, regulation output power are mixed together by fuel and compressed air Mixed design gas turbine.Or these processes Substantial amounts of compression energy is wasted, otherwise can also cause environmental pollution.
Propose that " one kind is drawn water compressed-air energy storage system in the application documents of Chinese invention Application No. 201110137038 Water is pressed into air pressure tank by system ", the system by water pump in low power consumption from tank, is compressed gas in tank, so that The interior energy for converting electrical energy into air is stored;In peak of power consumption, air pressure tank mesohigh air goes out hydraulic pressure, through water-supply-pipe Road drives the hydraulic turbine and drives electrical power generators.The system is particularly well-suited to distributed small-sized energy-storage system, but the system stored energy Density is relatively low and does not add hot water function etc..
According to another report, German has invented one kind and has been referred to as water conservancy rock energy storage technology, and its general principle is:Use cylinder The rock of piston shape is embedded in shape identical tank, when having rich electric power, during hydraulic pressure can be entered tank by pump, and now rock Stone piston will be lifted by hydraulic pressure, will electric energy be converted into gravitional force.And when power network requires supplementation with electric energy and supplies, gate Can open, now rock piston can decline, the water in extruding tank flows through the hydraulic turbine to generate electricity, by transform gravitational energy into electricity Energy.The energy storage capacity of the system depends on the density of rock piston, size, quality and is elevated pieces of height etc., due to rock Density is not high, and the size of rock piston can be very big, if maximization, construction and installation all exist many difficult.In addition, piston energy Elevated height is preferably at most the half of its own, can otherwise be rolled.
A kind of " forward and reverse organic Rankine bottoming cycle storage is proposed in the application documents of Chinese invention Application No. 201310088097 Can method and system ", the system is to utilize phase-change accumulation energy, and energy storage density is big, can steady and continuous realize electrical power storage and release; But, this system does not account for effective utilization of the low grade heat energy and cold in thermodynamic cycle process.
The content of the invention
The technical problem to be solved in the present invention is:There is provided that a kind of energy storage density is high, energy loss is small, by geographical environmental condition Influence is small, construction and installation are convenient, can heat accumulation generating, compressed gas of drawing water energy storing and electricity generating, heating cold water, cooling, many work(of water supply Can energy storage and energy conversion system.
To reach above-mentioned purpose and solving above-mentioned technical problem, technical scheme proposed by the present invention is:
A kind of energy storage device, including kinetic pump, air pressure tank, turbine-generator units, water tank, pipeline, valve etc., kinetic pump Water inlet is connected with water feeding one-way valve by threeway, and the water inlet of water feeding one-way valve is connected with inlet pipeline, water inlet pipe mouth and water Source connects, and the delivery port of kinetic pump connects by pipe valve with the water inlet of air pressure tank, the power delivery port of air pressure tank pass through pipeline, Valve is connected with the water inlet of turbine-generator units, delivery port the entering by pipeline, valve and water tank of turbine-generator units The mouth of a river is connected, and the water return outlet or delivery port of water tank are also connected by pipeline, valve with the water inlet of kinetic pump;Air pressure tank is built-in There is rolling diaphragm, air pressure tank is separated into high pressure air cavity and high-pressure water chamber by barrier film, water inlet, power are installed on high-pressure water chamber and The mouth of a river;Water tank is separated into low pressure water cavity and low pressure air cavity by water tank built with rolling diaphragm, barrier film, is installed on low pressure water cavity There are water inlet, water return outlet or delivery port;Switch valve and breather check valve are housed on the high pressure air cavity of air pressure tank;The high pressure of air pressure tank Water cavity inner bottom part is equipped with First Heat Exchanger, the second heat exchanger and connects heat exchange with external heat source respectively, is also equipped with high-pressure water chamber Hot water effluent's pipeline, valve, outlet pipeline, valve are also equipped with the low pressure water cavity of water tank;Air pressure tank, water tank are coated with Heat-insulating material, barrier film is heat-insulated barrier film;
Phase-change energy storage device, phase-change energy storage device bag are also parallel with the high pressure air cavity of air pressure tank and the low pressure air cavity of water tank Include:High-pressure working medium storage tank, low pressure working fluid storage tank, compressor, pipeline, valve, phase-change working substance;High-pressure working medium storage tank is by an adiabatic guarantor Adiabator cladding tank body, be placed in the endoceliac high temperature phase change material (pcm) of tank, phase-change working substance composition, be provided with high-pressure working medium storage tank into Gas outlet;Tank body that low pressure working fluid storage tank is coated by a heat-insulating material, it is placed in the endoceliac low-temperature phase-change material of tank, phase transformation Working medium and be placed in low pressure working fluid storage tank and with tank body outside working medium circulation device UNICOM heat exchanger composition, low pressure working fluid storage Air inlet/outlet is provided with tank;The air inlet of compressor is connected by pipe valve with the air inlet/outlet of low pressure working fluid storage tank, while low pressure The air inlet/outlet of working medium storage tank is also connected by pipe valve with the low pressure air cavity of water tank, and the gas outlet of compressor is by pipe valve and height The air inlet/outlet connection of working medium storage tank is pressed, while the air inlet/outlet of high-pressure working medium tank is also by pipe valve and the high pressure air cavity of air pressure tank Connection.
After the working medium circulation device UNICOM outside heat exchanger and tank body in low pressure working fluid storage tank, when being connected with external heat source It is capable of achieving to conveying heat in storage tank;When being connected with external boiler, cold can be provided for outside.
Pipe valve described here includes pipeline and valve, and valve includes:Switch valve, flow control valve, pressure-control valve etc., this In it is described enter escaping pipe refer to air inlet pipe, escaping pipe be same pipeline, be here the fluid include air-flow and liquid stream or gas-liquid Two phase flow.It refers to that heat exchanger can be with solar energy or spent hot water or used heat that First Heat Exchanger described here connects heat exchange with external heat source Gas or biomass thermal etc. carry out various heat exchanges.Second heat exchanger described here connects heat exchange with external heat source, including:Heat exchange Device is swapped with the heat energy in phase-change thermal storage electricity generation system, the heat of such as compressor outlet or expanding machine gas outlet it is remaining Heat;Heat energy in other environment, such as solar energy, biomass energy, industrial exhaust heat etc..The power resources of the kinetic pump can be Grid power, or regenerative resource, overbottom pressure, waste heat and conventional trough-electricity etc..The system has following mode of operation:(1) The direct water lift water supply pattern of kinetic pump;(2)Water lift compressed-air energy storage power generation mode;(3)Grid power phase-change thermal storage generating mould Formula;(4)Water lift compressed-air energy storage+external heater heating water water supply pattern;(5)Phase-change thermal storage generating+hot water water supply pattern; (6)Water lift compressed-air energy storage generating+phase-change thermal storage power generation mode;(7)Compressed-air energy storage generating+phase-change thermal storage generates electricity+adds Hot-water mode;(8)The heat accumulation power generation mode that regenerative resource drives;(9)Water lift compressed energy-storage+cooling mode;(10)Cool and thermal power Coproduction pattern etc..
A kind of above-mentioned energy storage device, alternative technology scheme is:It is air inlet/outlet in high-pressure working medium storage tank, low Press and expanding machine is parallel with by pipe valve between the air inlet/outlet of working medium storage tank, the flow inlet of expanding machine by pipeline and switch valve with High-pressure working medium storage tank air inlet/outlet connection or connect with the high pressure air cavity of air pressure tank, expanding machine go out head piece pass through pipeline with it is low Press the air inlet/outlet connection of working medium storage tank or connected with the low pressure air cavity of water tank.
A kind of above-mentioned energy storage device, improved technical scheme is:Enter with low pressure working fluid storage tank in the air inlet of compressor Heat absorbing heat exchanger is serially connected between gas outlet.Heat absorbing heat exchanger can absorb the heat in environment and biography gives working medium, according to ring The difference of border condition, heat absorbing heat exchanger can be gas-to-gas heat exchanger, water-gas heat exchanger, solar heat exchanger etc..
A kind of above-mentioned energy storage device, improved technical scheme is:Enter with low pressure working fluid storage tank in the air inlet of compressor Expansion valve is serially connected between gas outlet.Concatenated when low pressure working fluid storage tank working medium out carries certain liquid or gas-liquid mixture Expansion valve is necessary.
A kind of above-mentioned energy storage device, alternative technology scheme is:The compressor is reversible compression/expansion one Body machine.Reversible compression/expansion all-in-one is a motor compressor and the machine integrated device of expansion power generation.
A kind of above-mentioned energy storage device, alternative technology scheme is:In high-pressure working medium storage tank and low pressure working fluid storage tank Between indirect heat pump is housed, the evaporator of indirect heat pump is placed in low pressure working fluid storage tank, and the condenser of indirect heat pump is placed in high pressure In working medium storage tank, the air inlet of the compressor of indirect heat pump is with the gas outlet of evaporator by pipeline connection, the pressure of indirect heat pump With the air inlet of condenser by pipeline connection, the head piece that goes out of condenser is connected with the flow inlet of expansion valve for the gas outlet of contracting machine, The gas outlet of expansion valve connects with the flow inlet of evaporator.
A kind of above-mentioned energy storage device, alternative technology scheme is:The hydrogenerator is reversible electric water Pump/turbine-generator units.Kinetic pump and related pipe valve can be removed during using this scheme, investment is more saved.
A kind of above-mentioned energy storage device, preferred technical scheme is:The diaphragm is rolling diaphragm.
Alternative another energy storage device, including kinetic pump, air pressure tank, turbine-generator units, water tank, pipeline, Valve etc., the water inlet of kinetic pump is connected with water feeding one-way valve by threeway, and the water inlet of water feeding one-way valve is connected with water inlet pipe Road, water inlet pipe mouth is connected with water source, and the delivery port of kinetic pump is connected by pipe valve with the water inlet of air pressure tank, the power of air pressure tank Delivery port is connected by pipeline, valve with the water inlet of turbine-generator units, and the delivery port of turbine-generator units passes through pipeline, valve Door is connected with the water inlet of water tank, and the water return outlet of water tank is also connected by pipeline, valve with the water inlet of kinetic pump;It is special Levy and be:Built with barrier film, air pressure tank is separated into high pressure air cavity and high-pressure water chamber to air pressure tank by barrier film, high-pressure water chamber be provided with into Head piece, power delivery port;Water tank is separated into low pressure water cavity and low pressure air cavity, low pressure water by water tank built with barrier film, barrier film Chamber is provided with water inlet, delivery port or delivery port;Switch valve and breather check valve are housed on the high pressure air cavity of air pressure tank;Air pressure tank High-pressure water chamber is built with First Heat Exchanger, the second heat exchanger and connects heat exchange with external heat source respectively, also filled on high-pressure water chamber There are hot water effluent's pipeline, valve, outlet pipeline, valve are also equipped with the low pressure water cavity of water tank;Air pressure tank, water tank outer cladding There is heat-insulating material, barrier film is heat-insulated barrier film;And
Air pressure tank high pressure air cavity built with high temperature phase change material (pcm) and phase-change working substance, water tank low pressure air cavity built with low Warm phase-change material, phase-change working substance and the heat exchanger with the working medium circulation device UNICOM of tank body, in high pressure air cavity and the storage of air pressure tank Compressor is communicated with by pipe valve between the low pressure air cavity of water pot, the air inlet of compressor is by pipe valve and the low pressure gas of water tank Chamber is connected, and the gas outlet of compressor is connected by pipe valve with the high pressure air cavity of air pressure tank.
A kind of above-mentioned energy storage device, alternative technology scheme is:In the high pressure air cavity and water tank of air pressure tank Expanding machine is parallel with by pipe valve between low pressure air cavity, the flow inlet of expanding machine is by pipeline and the high pressure of switch valve and air pressure tank The air inlet/outlet connection of air cavity, the head piece that goes out of expanding machine is connected by pipeline with the air inlet/outlet of the low pressure air cavity of water tank.
A kind of above-mentioned energy storage device, alternative technology scheme is:The power of the compressor uses renewable energy Source.
A kind of above-mentioned energy storage device, improved technical scheme is:In the high pressure air cavity and the low pressure of water tank of air pressure tank Return line and switch valve are installed, switch valve is arranged in return line between air cavity.Return line and switch valve can be used for Release.
A kind of above-mentioned energy storage device, can use as the high-pressure water of desalinization or other water treatment systems.
A kind of above-mentioned energy storage device, the freezing point of the low-temperature phase-change material between -10 °C ~ 32 °C, the high temperature The freezing point of phase-change material is between 110 °C ~ 160 °C.
The low pressure air cavity of the high pressure air cavity, high-pressure water chamber and water tank of above-mentioned air pressure tank, " high pressure " of low pressure water cavity, " low Pressure " refers to the relative pressure between two air cavitys, water cavity.The high-pressure working medium storage tank, " high pressure " of low pressure working fluid storage tank, " low pressure " It refer to the relative pressure between working medium storage tank.
Beneficial effect:A kind of energy storage device of the invention, one is many functions, with water lift, water storage, heating water, cooling, take out Water compressed air energy storing and electricity generating, phase-change thermal storage generating have above multiple function simultaneously;Two is big energy storage density, is used Phase-change accumulation energy has energy storage density higher with the mode that compressed-air energy storage generating of drawing water is combined than pure air energy storage;Three are Can be used for grid power energy storage, it can also be used to regenerative resource energy storage;Four is easy to install, and energy storing devices are to mounting condition It is less demanding, and conveniently moving, it is particularly suitable for distributed energy and micro-capacitance sensor is used.
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
Brief description of the drawings:
Fig. 1 is a kind of energy storage device system schematic of the invention.
Fig. 2 is another energy storage device system schematic of the invention.
Specific embodiment
Embodiment 1:A kind of energy storage device system shown in accompanying drawing 1, including kinetic pump 1, air pressure tank 2, turbine-generator units 3rd, water tank 4, pipeline 5,16,22,18 etc., valve 6-1 to 6-10 and 14,17,19,21,23,25 etc., high-pressure working medium storage tank 7, Low pressure working fluid storage tank 8, compressor 9, expanding machine 10, First Heat Exchanger 12, second heat exchanger 13 etc. are constituted.Air pressure tank 2 is by thermal insulation The compositions such as tank body 2-1, adiabatic rolling diaphragm 2-2;Water tank 4 is made up of adiabatic tank body 4-1, adiabatic rolling diaphragm 4-2 etc.;High pressure Tank body 7-1 that working medium storage tank 7 is coated by a heat-insulating material, it is placed in the endoceliac high temperature phase change material (pcm) 7-2 of tank, phase-change working substance 7-3 etc. is constituted, and air inlet/outlet 7-4 is provided with high-pressure working medium storage tank;The tank that low pressure working fluid storage tank 8 is coated by a heat-insulating material Body 8-1, it is placed in the endoceliac low-temperature phase-change material 8-2 of tank, phase-change working substance 8-3 and is placed in low pressure working fluid storage tank and and tank body The heat exchanger 8-5 compositions of external heat source UNICOM, are provided with air inlet/outlet 8-4 on low pressure working fluid storage tank.The water inlet of kinetic pump 1 is by pipe Road is connected with water feeding one-way valve 11, and the water inlet of water feeding one-way valve 11 is connected with inlet pipeline 5, and water inlet pipe mouth is connected with water source, The delivery port of kinetic pump 1 is connected by pipeline and valve 25 with the water inlet of air pressure tank 2, and the power delivery port of air pressure tank 2 passes through Pipeline, valve 6-10 are connected with the water inlet of turbine-generator units 3, and the delivery port of turbine-generator units 3 passes through pipeline and water storage The water inlet connection of tank 4, the water return outlet of water tank 4 is connected by the water inlet of water return pipeline 16, valve 17 also with kinetic pump 1; Air pressure tank is separated into high pressure air cavity 2-3 and high-pressure water chamber 2-4 by air pressure tank 2 built with rolling diaphragm 2-2, rolling diaphragm 2-2;Storage Water tank 4 is separated into low pressure water cavity 4-3 and low pressure air cavity 4-4 by water pot 4 built with rolling diaphragm 4-2, rolling diaphragm 4-2;Gas Press and switch valve 14 and breather check valve 15 are housed on the high pressure air cavity 2-3 of tank 2;The high-pressure water chamber 2-4 of air pressure tank 2 is built with first Heat exchanger 12, the second heat exchanger 13 simultaneously connect heat exchange with external heat source respectively, and hot water effluent's pipeline is also equipped with high-pressure water chamber 2 18th, valve 19, are also equipped with outlet pipeline 20, valve 21 on the low pressure water cavity of water tank;The delivery port of kinetic pump 1 passes through threeway also Cold water outlet pipe 22 and valve 23 are communicated with, air pressure tank 2, water tank 4 are coated with heat-insulating material, rolling diaphragm 2-2,4- 2 is heat-insulated barrier film, and kinetic pump 1 uses centrifugal high pressure water pump, compressor 9 to use screw compressor, and expanding machine 10 is swollen using turbine Swollen machine, turbine-generator units 3 use bulb-type hydraulic generating set.
High-pressure working medium storage tank 7 is linked with by pipe valve on the high pressure air cavity 2-3 of air pressure tank 2, in the low pressure gas of water tank 4 Low pressure working fluid storage tank 8 is linked with by pipe valve on the 4-4 of chamber, the air inlet of compressor 9 is by pipeline, valve 6-5,6-7 and low pressure Working medium storage tank 8 air inlet/outlet 8-4 connection, while the air inlet/outlet 8-4 of low pressure working fluid storage tank 8 also by pipeline, valve 6-7, 6-6 is connected with the low pressure air cavity 4-4 of water tank 4, and the gas outlet of compressor 8 passes through pipeline, valve 6-4 and high-pressure working medium storage tank 7 Air inlet/outlet 7-4 connection.The air inlet of expanding machine 10 by pipeline, valve 6-2,6-4 also with the turnover of high-pressure working medium storage tank 7 Gas port 7-4 is connected.The gas outlet of expanding machine 10 is connected by pipeline, valve 6-8 with the air inlet of the second heat exchanger 13, and second changes The gas outlet of hot device 13 connects with the low pressure air cavity 4-4 of water tank 4.First Heat Exchanger 12 is connected with a solar water heater(Figure In be not drawn into).
The working medium and phase-change material used in the embodiment 1, first scheme is:Organic working medium is R245fa, low temperature phase change Material selection phase transition temperature is 32 °C of capric acid, and high temperature phase change material (pcm) selects low-melting alloy, 160 °C of phase transition temperature, high pressure work Pressure is the working medium saturation pressure 3.9MPa under high temperature phase change material (pcm) phase transition temperature in matter storage tank 7.Pressure in low pressure working fluid storage tank 8 It is the working medium saturation pressure 0.19MPa under low-temperature phase-change material phase transition temperature.
The working medium and phase-change material used in the embodiment 1, alternative plan is:Organic working medium is iso-butane, low temperature phase change Material selection phase transition temperature is -10 °C of glycol water, and high temperature phase change material (pcm) selects polyester thermal capacitance cotton, 110 ° of phase transition temperature C.Pressure is the working medium saturation pressure 1.8MPa under high temperature phase change material (pcm) phase transition temperature in high-pressure working medium storage tank 7.Low pressure working fluid is stored up Pressure is the working medium saturation pressure 0.07MPa under low-temperature phase-change material phase transition temperature in tank 8.
The system has following mode of operation:(1)Direct water lift pattern:Closing switch valve 25, kinetic pump 1 by suction hose 5, Check valve 11 supplies water directly from the water lift of water source 24 through valve 23, pipeline 22.(2)Draw water compressed-air energy storage pattern:Close valve 6-1,23,19,6-1 etc., open valve 25, kinetic pump 1 from the water lift of water source 24 or the low pressure water storage cavity 4-3 backwater from water tank 4, The air energy storage in compression rolling diaphragm 2-2 and air cavity 2-3 in the high-pressure water chamber 2-4 of air pressure tank 2 is injected, then opens valve 6-10, Generate electricity or drive other work mechanisms by the high-pressure water chamber 2-4 driving hydraulic turbines 3 that discharge water;(3)Draw water energy storage+phase-change accumulation energy mould Formula:Shutoff valve 23,19, opens valve 25, kinetic pump 1 to the internal pump water of air pressure tank 2, while open valve 6-1,6-2,6-4,6-5,6-6, 6-7, shutoff valve 6-3,6-8,6-9, compressor 9 is opened, and from the interior pumping of low pressure working fluid storage tank 8, is compressed to high-pressure working medium storage tank 7 It is interior, in this compression process, on the one hand, the liquid phase cryogenic fluid in low pressure working fluid storage tank 8 evaporates to keep low pressure working fluid storage tank 8 Interior pressure stability, while the low-temperature phase-change material 8-2 condensation heats in low pressure working fluid storage tank 8, and adjusts heat exchanger 8-5 Heating power flow, can keep temperature stabilization in low pressure working fluid tank 8;On the other hand, the high pressure vapor working medium after being compressed through compressor 9 is entered Enter high-pressure working medium storage tank 7, liquid working substance is condensed into wherein to keep the pressure stability in high-pressure working medium storage tank 7, while high pressure The high temperature phase-change material 7-2 of working medium storage tank 7 melts heat absorption, to keep the temperature stabilization in high-pressure working medium storage tank 7.During this It is high temperature phase change material (pcm) and the heat of transformation of high pressure organic working medium that the electrical power storage of compressor will be driven;In power generation process:It is a kind of Mode can be directly to open valve 6-10, and the water under high pressure direct drive hydrogenerator 3 in the high-pressure water chamber of air pressure tank 2 generates electricity. The second way is to close valve 6-9,6-10, opens valve 6-3,6-8, and expansion power generator 10 is opened, and high-pressure working medium tank 7 is gentle High pressure vapor working medium in pressure tank 2 high pressure air cavity 2-3 promotes expansion power generator 10 to run, in this power generation process, on the one hand, liquid Pressure stability of the phase working medium 7-3 evaporations to keep in high-pressure working medium storage tank 7 and in high pressure air cavity 2-3, while high-pressure working medium storage tank 7 In high temperature phase change material (pcm) 7-2 condensation heats, to keep in high-pressure working medium storage tank temperature stabilization in 7 and high pressure air cavity 2-3;It is another Aspect, high pressure vapor working medium is done work into expanding machine 10, and its waste heat enters the He of low pressure working fluid tank 8 after being exchanged heat through the second heat exchanger 13 The low pressure air cavity 4-4 of water tank 4, condenses into liquid to keep pressure stability in low pressure working fluid storage tank 8, together in low pressure working fluid tank When low pressure working fluid storage tank 8 in low-temperature phase-change material 8-2 melt heat absorption, and heating power flow can keep in adjusting heat exchanger 8-5 Temperature stabilization in low pressure working fluid storage tank 8, this power generation process will can be stored in high temperature phase change material (pcm) and high pressure organic working medium The heat of transformation is converted into the electric power of the output of expansion power generator 10.In this power generation process, the waste heat of expansion power generator discharge can be through Water in the high-pressure water chamber 2-4 of the heating air accumulator 2 of the second heat exchanger 13, hot water can flow out from pipeline 18 or pipeline 22.(4)Water lift Compressed-air energy storage+external heater heating water water supply pattern:Shutoff valve 6-10,23, kinetic pump 1 from water source 24 by the road 5, it is single To high-pressure water chamber 2-4 water fillings from valve 11 to air pressure tank 2, at the same time First Heat Exchanger 12 and external solar energy or other heating power sources Communication loop, the water in heating high-pressure water chamber 2-4, hot water is exported by pipeline 18, valve 19.(5)The fluctuation energy draws water+phase transformation Heat accumulation power generation mode:Fluctuation driven by energy kinetic pump 1 draws water and saves in the high-pressure water chamber 2-4 of air pressure tank 2, conventional valley power Electric power is changed into the heat of transformation by compressor 9 to be stored in high-pressure working medium tank 7.When needing, valve 6-10 is opened, control constant pressure The water under high pressure of power promotes hydrogenerator to generate electricity.(6)Draw water compressed-air energy storage generating+phase-change thermal storage power generation mode:On the one hand, The compressed-air energy storage that draws water generate electricity be kinetic pump 1 drawn water from the low pressure water cavity of water tank 4 or from water source 24 injection air pressure tank 2 High-pressure water chamber 2-4 in energy storage, it is necessary to when, high pressure water-driven turbine-generator units generate electricity;On the other hand, phase-change accumulation energy is compression Machine 9 by unnecessary electric power can be converted into thermal energy storage in high-pressure working medium storage tank, it is necessary to when the expanded machine 10 of hot high pressure strength body Drive electrical power generators or with the cogeneration of turbine-generator units 3.The characteristic of each functional unit according to the system can be with It is combined into the combination of other functions.
Embodiment 2:Accompanying drawing 2 show the apparatus system that another energy storing and electricity generating heating water of the invention supplies water, with implementation Example 1 is differed only in:Remove the tank body 7-1 of Fig. 1 mesohighs working medium storage tank 7, and by the high-temperature-phase in high-pressure working medium storage tank 7 Become in the high pressure air cavity 2-3 of the equivalent air pressure tanks being transplanted in Fig. 1 of material 7-2 and phase-change working substance 7-3;Remove Fig. 1 mesolow works The tank body 8-1 of matter storage tank 8, and by the low-temperature phase-change material 8-2 in low pressure working fluid storage tank 8, phase-change working substance 8-3 and with tank body outside The heat exchanger 8-5 of thermal source UNICOM is equivalent to be transplanted in the low pressure air cavity 4-4 of water tank 4.Expansion power generation unit 10 can also be removed, And with the substitute generation of turbine-generator units 3.The phase-change material and phase-change working substance used in embodiment 2 are except using in embodiment 1 It is outer, or:Organic working medium is pentane, and low-temperature phase-change material is the paraffin that phase transition temperature is 21 °C, high temperature phase change material (pcm) It is the high density polyethylene (HDPE) that phase transition temperature is 13 °C.Now, the working medium saturation pressure under high temperature phase change material (pcm) phase transition temperature 1.1MPa.Working medium saturation pressure 0.06MPa under low-temperature phase-change material phase transition temperature.During energy storage, the consumption electric energy of compressor 9 will Working medium pressure-increasing unit in the low pressure air cavity 4-4 of water tank 4 in the high pressure air cavity 2-3 of air accumulator 2, during generating, high pressure air cavity High-pressure working medium in 2-3 promotes the water-driven hydraulic turbine 3 in rolling diaphragm 2-2 and high-pressure water chamber 2-4 to generate electricity.Other functions and fortune Row process is same as Example 1 to be repeated no more here.
Although combined preferred embodiment describes device of the invention, the invention is not restricted to as herein described Concrete form, conversely, can naturally be fallen into the scope of the invention that described claims are limited its object is to cover Various alternatives, remodeling, the recombinant of various features key element and derivative Combination nova and equivalents.

Claims (10)

1. a kind of energy storage device, including kinetic pump, air pressure tank, turbine-generator units, water tank, pipeline, valve etc., kinetic pump Water inlet be connected with water feeding one-way valve, the water inlet of water feeding one-way valve is connected with inlet pipeline, and water inlet pipe mouth is connected with water source, The delivery port of kinetic pump is connected by pipe valve with the water inlet of air pressure tank, the power delivery port of air pressure tank by pipeline, valve with The water inlet connection of turbine-generator units, the delivery port of turbine-generator units is connected by the water inlet of pipeline, valve and water tank Logical, the water return outlet of water tank is also connected by pipeline, valve with the water inlet of kinetic pump;It is characterized in that:Air pressure tank built with Air pressure tank is separated into high pressure air cavity and high-pressure water chamber by barrier film, barrier film, and the water inlet and power delivery port of air pressure tank are mounted in high pressure On water cavity;Built with barrier film, water tank is separated into low pressure water cavity and low pressure air cavity to water tank by barrier film, the water inlet of water tank and Water return outlet or delivery port are incorporated on low pressure water cavity;Switch valve and breather check valve are housed on the high pressure air cavity of air pressure tank;Air pressure The high-pressure water chamber of tank is built with First Heat Exchanger, the second heat exchanger and connects heat exchange with external heat source respectively, on high-pressure water chamber also Equipped with hot water effluent's pipeline, valve, outlet pipeline, valve are also equipped with the low pressure water cavity of water tank;Air pressure tank, water tank outsourcing Heat-insulating material is covered with, barrier film is heat-insulated barrier film;And
Phase-change energy storage device, phase-change energy storage device bag are also communicated with the high pressure air cavity of air pressure tank and the low pressure air cavity of water tank Include:High-pressure working medium storage tank, low pressure working fluid storage tank, compressor, pipeline, valve, phase-change working substance;High-pressure working medium storage tank is by an adiabatic guarantor Adiabator cladding tank body, be placed in the endoceliac high temperature phase change material (pcm) of tank and phase-change working substance composition, be provided with high-pressure working medium storage tank Air inlet/outlet;Tank body that low pressure working fluid storage tank is coated by a heat-insulating material, it is placed in the endoceliac low-temperature phase-change material of tank, phase Become working medium and be placed in low pressure working fluid storage tank and with tank body outside working medium circulation device UNICOM heat exchanger composition, low pressure working fluid Air inlet/outlet is provided with storage tank;The air inlet of compressor is connected by pipe valve with the air inlet/outlet of low pressure working fluid storage tank, while low Press the air inlet/outlet of working medium storage tank also to be connected with the low pressure air cavity of water tank by pipe valve, the gas outlet of compressor pass through pipe valve and The air inlet/outlet connection of high-pressure working medium storage tank, while gas outlet is also connected by pipe valve with the high pressure air cavity of air pressure tank.
2. a kind of energy storage device according to claim 1, it is characterised in that:It is air inlet/outlet in high-pressure working medium storage tank, low Press and expanding machine is parallel with by pipe valve between the air inlet/outlet of working medium storage tank, the flow inlet of expanding machine by pipeline and switch valve with The air inlet/outlet connection of high-pressure working medium storage tank, the head piece that goes out of expanding machine is connected by pipeline with the air inlet/outlet of low pressure working fluid storage tank It is logical.
3. a kind of energy storage device according to claim 1, it is characterised in that:In the air inlet and low pressure working fluid of compressor Heat absorbing heat exchanger is serially connected between storage tank air inlet/outlet.
4. a kind of energy storage device according to claim 1, it is characterised in that:In the air inlet and low pressure working fluid of compressor Expansion valve is serially connected between storage tank air inlet/outlet.
5. a kind of energy storage device according to claim 1, it is characterised in that:The compressor is reversible compression-expansion one Body machine.
6. a kind of energy storage device according to claim 1, it is characterised in that:Stored up in high-pressure working medium storage tank and low pressure working fluid Indirect heat pump is housed, the evaporator of indirect heat pump is placed in low pressure working fluid storage tank, and the condenser of indirect heat pump is placed in height between tank In pressure working medium storage tank, the air inlet of the compressor of indirect heat pump passes through pipeline connection with the gas outlet of evaporator, indirect heat pump With the air inlet of condenser by pipeline connection, the head piece that goes out of condenser connects with the flow inlet of expansion valve for the gas outlet of compressor Logical, the gas outlet of expansion valve connects with the flow inlet of evaporator.
7. a kind of energy storage device according to claim 1, it is characterised in that:The hydrogenerator is reversible electric Water pump/turbine-generator units.
8. a kind of energy storage device according to claim 1, it is characterised in that:Affiliated diaphragm is rolling diaphragm.
9. a kind of energy storage device, including kinetic pump, air pressure tank, turbine-generator units, water tank, pipeline, valve etc., kinetic pump Water inlet be connected with water feeding one-way valve, the water inlet of water feeding one-way valve is connected with inlet pipeline, and water inlet pipe mouth is connected with water source, The delivery port of kinetic pump is connected by pipe valve with the water inlet of air pressure tank, the power delivery port of air pressure tank by pipeline, valve with The water inlet connection of turbine-generator units, the delivery port of turbine-generator units is connected by the water inlet of pipeline, valve and water tank Logical, the water return outlet or delivery port of water tank are also connected by pipeline, valve with the water inlet of kinetic pump;It is characterized in that:Air pressure Air pressure tank is separated into high pressure air cavity and high-pressure water chamber by tank built with barrier film, barrier film, is gone out equipped with water inlet, power on high-pressure water chamber The mouth of a river;Built with barrier film, water tank is separated into low pressure water cavity and low pressure air cavity to water tank by barrier film, the water inlet of water tank and is returned The mouth of a river or delivery port are incorporated on low pressure water cavity;Switch valve and breather check valve are housed on the high pressure air cavity of air pressure tank;Air pressure tank High-pressure water chamber is built with First Heat Exchanger, the second heat exchanger and connects heat exchange with external heat source respectively, also filled on high-pressure water chamber There are hot water effluent's pipeline, valve, outlet pipeline, valve are also equipped with the low pressure water cavity of water tank;Air pressure tank, water tank outer cladding There is heat-insulating material, barrier film is heat-insulated barrier film;And
Air pressure tank high pressure air cavity built with high temperature phase change material (pcm) and phase-change working substance, water tank low pressure air cavity built with low Warm phase-change material, phase-change working substance and with tank body outside working medium circulation device UNICOM heat exchanger, air pressure tank high pressure air cavity with Compressor is communicated with by pipe valve between the low pressure air cavity of water tank, the air inlet of compressor is by pipe valve and the low pressure of water tank Air cavity is connected, and the gas outlet of compressor is connected by pipe valve with the high pressure air cavity of air pressure tank.
10. a kind of energy storage device according to claim 9, it is characterised in that:In the high pressure air cavity and water tank of air pressure tank Low pressure air cavity between expanding machine is parallel with by pipe valve, the height that the flow inlet of expanding machine passes through pipeline and switch valve and air pressure tank Calm the anger the air inlet/outlet connection in chamber, the head piece that goes out of expanding machine connected by pipeline with the air inlet/outlet of the low pressure air cavity of water tank.
CN201710098879.1A 2017-02-23 2017-02-23 Energy storage device Withdrawn CN106677969A (en)

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108131128A (en) * 2017-12-19 2018-06-08 中国地质大学(武汉) A kind of method of determining blowing production well occurrence
CN108317058A (en) * 2018-03-28 2018-07-24 天津融渌众乐科技有限公司 A kind of heat source of temperature difference driving utilizes system
CN109306933A (en) * 2018-05-31 2019-02-05 大连真源海洋新能源科技有限公司 Ocean energy of flow gas storage device
CN110425630A (en) * 2019-08-07 2019-11-08 临沂智慧新能源科技有限公司 A kind of mobile accumulation of heat vehicle of the big temperature difference and its supply control method for heat
CN110645136A (en) * 2019-10-25 2020-01-03 国网湖南省电力有限公司 Power generation system
CN111058910A (en) * 2019-12-12 2020-04-24 西安交通大学 Pressurized-water heat storage and energy storage system and energy storage and release method
CN111238919A (en) * 2020-02-25 2020-06-05 蓝箭航天技术有限公司 Double-medium pressure test device
CN111413205A (en) * 2020-02-25 2020-07-14 蓝箭航天技术有限公司 Double-medium pressure test system and method
CN112119213A (en) * 2018-04-16 2020-12-22 麦哲伦&巴伦支私人有限公司 Pump type hydroelectric energy storage system and method
CN112554984A (en) * 2020-11-24 2021-03-26 西安交通大学 Constant-pressure water-pumping compressed air energy storage system with heat storage function and operation method
FR3112600A1 (en) * 2020-07-17 2022-01-21 Pierre Gilliard Method and system for thermomechanical energy storage
US11359597B2 (en) * 2018-10-04 2022-06-14 Gaylord Olson Combined pumped hydro and thermal energy storage
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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108131128A (en) * 2017-12-19 2018-06-08 中国地质大学(武汉) A kind of method of determining blowing production well occurrence
CN108317058A (en) * 2018-03-28 2018-07-24 天津融渌众乐科技有限公司 A kind of heat source of temperature difference driving utilizes system
CN112119213A (en) * 2018-04-16 2020-12-22 麦哲伦&巴伦支私人有限公司 Pump type hydroelectric energy storage system and method
CN112119213B (en) * 2018-04-16 2022-11-04 麦哲伦&巴伦支私人有限公司 Pump type hydroelectric energy storage system and method
CN109306933A (en) * 2018-05-31 2019-02-05 大连真源海洋新能源科技有限公司 Ocean energy of flow gas storage device
US11359597B2 (en) * 2018-10-04 2022-06-14 Gaylord Olson Combined pumped hydro and thermal energy storage
CN110425630A (en) * 2019-08-07 2019-11-08 临沂智慧新能源科技有限公司 A kind of mobile accumulation of heat vehicle of the big temperature difference and its supply control method for heat
CN110645136A (en) * 2019-10-25 2020-01-03 国网湖南省电力有限公司 Power generation system
CN111058910B (en) * 2019-12-12 2021-08-13 西安交通大学 Pressurized-water heat storage and energy storage system and energy storage and release method
CN111058910A (en) * 2019-12-12 2020-04-24 西安交通大学 Pressurized-water heat storage and energy storage system and energy storage and release method
CN111413205A (en) * 2020-02-25 2020-07-14 蓝箭航天技术有限公司 Double-medium pressure test system and method
CN111413205B (en) * 2020-02-25 2021-03-02 蓝箭航天空间科技股份有限公司 Double-medium pressure test system and method
CN111238919A (en) * 2020-02-25 2020-06-05 蓝箭航天技术有限公司 Double-medium pressure test device
FR3112600A1 (en) * 2020-07-17 2022-01-21 Pierre Gilliard Method and system for thermomechanical energy storage
FR3112601A1 (en) * 2020-07-17 2022-01-21 Pierre Gilliard Method and system for thermomechanical energy storage
EP3943864A1 (en) * 2020-07-17 2022-01-26 Pierre Gilliard Process and system for thermomechanical energy storage
CN112554984A (en) * 2020-11-24 2021-03-26 西安交通大学 Constant-pressure water-pumping compressed air energy storage system with heat storage function and operation method
CN112554984B (en) * 2020-11-24 2021-09-07 西安交通大学 Constant-pressure water-pumping compressed air energy storage system with heat storage function and operation method
WO2022217758A1 (en) * 2021-04-16 2022-10-20 浙江大学 Combined heat and power generation system based on high temperature and low temperature thermal storage media

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Application publication date: 20170517