CN207999295U - A kind of compressed air electric energy storing system - Google Patents
A kind of compressed air electric energy storing system Download PDFInfo
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- CN207999295U CN207999295U CN201721484112.4U CN201721484112U CN207999295U CN 207999295 U CN207999295 U CN 207999295U CN 201721484112 U CN201721484112 U CN 201721484112U CN 207999295 U CN207999295 U CN 207999295U
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Abstract
The utility model discloses a kind of compressed air electric energy storing system, including constant-pressure gas storage device, high pressure device for storing liquid, energy storage component and release can component.Under energy storage state, energy storage component converts electrical energy into air internal energy and is sequentially stored in constant-pressure gas storage unit, and withdrawal liquid constant by the pressure of hydraulic pump and Hydraulic Motor Generator group adjusting constant-pressure gas storage device;Under de-energized state, high pressure gas in constant-pressure gas storage unit drives electrical power generators by expanding unit acting, while high pressure device for storing liquid injects liquid into constant-pressure gas storage unit and maintains its pressure constant, and complete to release the liquid in the gas storage unit of energy using hydraulic pressure pump group recycling.The utility model by highly pressurised liquid recycle realize the constant pressure energy storage of compressed air electric energy storing system and release can, can effectively reduce extensive power energy storage Capacity Cost, raising compressed air electric energy storing system economy.
Description
Technical field
The utility model is related to electrical power conversion and technical field of memory, especially a kind of compressed air electric energy storing system.
Background technology
Increasingly prominent background the problems such as traditional fossil energy faces soaring cost, resource exhaustion and environmental pollution
Under, the clean reproducible energies such as wind-power electricity generation, photovoltaic generation power generation in recent years is fast-developing, and will gradually replace conventional fossil energy
Source becomes following one of the main energy sources supply.With the ratio with randomness, intermittent renewable power supply in power grid
Gradually increase, limited by the Self-regulation ability of electric system, electric energy supply and the uncertain of consumption increase, in order to excellent
First ensure the safe and stable operation of power grid, annual a large amount of wind-powered electricity generation, photoelectricity is abandoned to surf the Internet, and a large amount of Wind turbines are in
Idle state.Power energy storage technology can move the energy of fluctuation, intermittence on time dimension, be that solution fluctuation can
The grid-connected quality problems of renewable power supply improve the effective means of renewable energy utilization rate.
Water-storage and compressed-air energy storage are to be suitable for the most economical feasible two kinds of technologies of extensive power energy storage at present.
Wherein, water-storage technology maturation is most widely used, but the construction of hydroenergy storage station is constrained by geographical conditions, and to week
It encloses ecological environment and will produce great influence.Compressed air energy storage technology is developed based on gas turbine power generation technology, and electricity consumption is low
Electric energy is stored in the form of pressure-air interior energy when paddy, high pressure air drives gas turbine power generation when peak of power consumption.Pressure
The caisson of contracting air energy-accumulating power station can be the cavern of large capacity, mine etc., can also be the steel of flexible arrangement
Pressure vessel, pipeline, opposite hydroenergy storage station have that energy storage density is big, the construction period is short, it is excellent not limited etc. by geographical conditions
Point, and specific investment cost cost and water-storage quite it is even lower.
Existing compressed air energy storage technology exists following insufficient:
(1)Simple in structure, inexpensive constant volume caisson gas storage pressure in energy storage and exoergic process is constantly to change
, on the one hand lead to compressor set and expand unit that design conditions that are efficient, stablizing cannot be operated in, makes the energy of energy-storage system
Transformation efficiency is affected;On the other hand cause energy storage density relatively low, stored energy capacitance cost is excessively high, the economy of energy-storage system
Difference.
(2)Existing constant-pressure gas storage device, such as " a kind of two-part energy-storage system based on constant-pressure gas storage "(Patent application
Number:201710096017.5)" compressed air electric energy storing system "(License notification number:CN 104121049 B)Respectively
A kind of constant-pressure gas storage scheme based on air pressure-Hydraulic coupling is disclosed, but needs to configure the high pressure with gas storage capacity same size
Liquid storage capacity increases stored energy capacitance cost;" a kind of water seal bilayer constant-pressure gas storage system "(Number of patent application:
201610942999.0)Disclose a kind of constant-pressure gas storage system being made of the air accumulator of special construction, the original of constant-pressure gas storage
Reason is also the coupling of air pressure-hydraulic pressure, but it can be gone out using liquid driving device output work in constant pressure in constant-pressure gas storage
Liquid driving device requires the expenditure of energy when gas, and the energy flow direction with compressed-air energy-storage system is on the contrary, can lead to system
The reduction of energy storage density and energy trans-utilization rate.
Invention content
In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a kind of compressed air electric energy storing system,
It should be based on more gas storage unit parallel connection constant-pressure gas storages and the recycling of energy is realized by conversion between air energy and electric energy and cycle
With recycle.
Technical solution is used by the utility model solves above-mentioned technical problem:A kind of compressed air power energy storage system
System, including:
Constant-pressure gas storage device is made of pressure vessel, and pressure vessel Nei Qinei prestores liquid;
High pressure device for storing liquid, including high-pressure bottle, the high-pressure bottle are connected to the non-pressure vessel in constant-pressure gas storage device;
Energy storage component, including motor and air compressor unit, air compressor unit is by motor drive, air compression
The exhaust outlet of unit is connected to the oral area of pressure vessel;Under energy storage state, motor driven air compressor group is empty by normal pressure
Gas is compressed and is delivered in pressure vessel, and the liquid to prestore in it is expelled in high-pressure bottle to maintain it by pressure vessel
Pressure itself is constant, and when pressure reduction in pressure vessel, high-pressure bottle recharges liquid to it;
Energy component is released, including generator and expansion unit, expansion unit drive generator operation, the air inlet of the expansion unit
Mouth is connected to the oral area of pressure vessel;Under de-energized state, pressure vessel discharges air therein to expansion unit, passes through expansion
Unit expansion work drive electrical power generators, while high-pressure bottle to pressure vessel filling liquid to maintain its pressure constant, complete to release
Remaining liq is injected high-pressure bottle by the pressure vessel of energy.
Further, constant-pressure gas storage device includes at least one pressure vessel, when pressure vessel is multiple, these constant pressures
Container is connected in parallel on energy storage component and release can be between component.
Further, which includes connection air compressor, multiple pressure vessels and expansion unit
The first valve, air inlet of first pipeline in expansion unit is arranged in the exhaust ports of air compressor in first pipeline, the first pipeline
Mouthful the second valve of place's setting, multiple pressure vessels are by the third valve in parallel that respectively matches on the first pipeline.
Further, the second pipeline for discharging liquid is equipped between pressure vessel and high-pressure bottle and for recharging liquid
The third pipeline of body, the second pipeline be equipped with hydraulic pump and the 4th valve, third pipeline be equipped with Hydraulic Motor Generator group and
5th valve.
Further, the outlet of multiple pressure vessels respectively with the second pipeline and third pipeline connection.
Further, three-way valve is arranged in the outlet of multiple pressure vessels, and the outlet end of three-way valve is connected in parallel on the second pipe
On the road, the liquid feeding end of triple valve is connected in parallel on third pipeline;
Under energy storage state, the outlet end of the three-way valve in the pressure vessel exit in inflated condition is opened, and is passed through
Liquid therein is expelled in high-pressure bottle by the second pipeline and hydraulic pump, meanwhile, the three-way valve of pressure vessel to be inflated
Liquid feeding end open, the liquid in high-pressure bottle passes through Hydraulic Motor Generator group and third pipeline filling liquid thereto;Releasing energy
Under state, the liquid feeding end of the pressure vessel exit three-way valve in de-energized state is opened, and the liquid in high-pressure bottle passes through
Hydraulic Motor Generator group and third pipeline filling liquid thereto, meanwhile, be completed release can pressure vessel exit triple valve
The outlet end of door is opened, and liquid therein is expelled in high-pressure bottle by the second pipeline and hydraulic pump.
Further, first outlet and second outlet is respectively set on multiple pressure vessels, first outlet passes through liquid valve
Door the second pipeline of connection, second outlet are connected to third pipeline by liquid flowing valve;
Under energy storage state, the liquid valve door of the pressure vessel in inflated condition is opened, and is managed by hydraulic pump and second
Liquid therein is expelled in high-pressure bottle by road, meanwhile, the liquid flowing valve of pressure vessel to be inflated from upstream to downstream according to
Secondary opening, liquid in high-pressure bottle pass through Hydraulic Motor Generator group and third pipeline filling liquid thereto;Under de-energized state,
The liquid flowing valve of pressure vessel in de-energized state is opened, and the liquid in high-pressure bottle passes through Hydraulic Motor Generator group and the
Three pipelines filling liquid thereto, meanwhile, be completed release can the liquid valve door of pressure vessel opened successively from downstream to upstream, pass through
Liquid therein is expelled in high-pressure bottle by hydraulic pump and the second pipeline.
Further, under energy storage state, the pressure vessel in inflated condition is expelled to the fluid flow of high-pressure bottle
The flow that the gas of constant-pressure gas storage device is pressed by air compressor unit determines;High-pressure bottle is filled to pressure vessel to be inflated
Flow quantity should be equal to the fluid flow that the pressure vessel in inflated condition is discharged into high-pressure bottle;
Under de-energized state, filling liquid flow from high-pressure bottle to the pressure vessel in de-energized state by constant-pressure gas storage device
Gas flow into expansion unit expansion work determines;Be completed release can pressure vessel be expelled to the liquid flow of high-pressure bottle
Amount should be equal to fluid flow of the high-pressure bottle to the pressure vessel filling liquid in de-energized state.
Compared with prior art, the utility model has the advantages that:
(1)By multiple independent pressure vessels(Gas storage unit)Parallel connection is used as constant-pressure gas storage device, by controlling each storage
Liquid volume in gas unit makes it in energy storage and keeps pressure constant during release energy so that compressed air power energy storage system
System in energy storage and compressor set and expands under the conditions of unit operates in rated pressure always during release energy, to overcome tradition
Gas storage pressure constantly system capacity transformation efficiency caused by variation is low in energy storage and exoergic process for constant volume caisson, works not
The problems such as stablizing improves energy storage efficiency;On the other hand, the realization of constant volume gas storage substantially increases energy storage density, to improve
The economy of energy-storage system.
(2)By being built between high pressure device for storing liquid and the constant-pressure gas storage device composed in parallel by multiple independent gas storage units
Vertical hydraulic pump recycles circuit with Hydraulic Motor Generator group, and large capacity constant pressure is realized using low capacity high pressure device for storing liquid
Gas storage, to substantially reduce based on steel pressure vessel, pipeline etc. can flexible arrangement ground caisson energy storage cost;Separately
On the one hand, during liquid circulation flows, the generated energy of the Hydraulic Motor Generator group of synchronous operation can be with basic neutralisation liquid
The power consumption of press pump, to improve the integral energy trans-utilization rate of system.
The utility model realizes the constant pressure energy storage of compressed air electric energy storing system by recycling for highly pressurised liquid
With release can, can effectively reduce extensive power energy storage Capacity Cost, improve compressed air electric energy storing system economy, have
Wide application prospect.
Description of the drawings
Fig. 1 is the structural schematic diagram of embodiment 1.
Fig. 2 is the structural schematic diagram of embodiment 2.
The utility model main element symbol description:
1- motor;2- air compressor units;The exhaust outlet of 3- air compressor units, the first valves of 4-, the first pipelines of 5-,
6- third valves, 7- constant-pressure gas storage devices, 7-a, 7-b, 7-c, 7-d ..., the more a pressure vessels of 7-n-, the second valves of 8-, 9-
The air inlet of expansion unit, 10- expansion units, 11- generators, 12- three-way valves, the second pipelines of 13-, 14- third pipelines,
15- Hydraulic Motor Generator groups, the 5th valves of 16-, 17- hydraulic pumps, the 4th valves of 18-, 19- high-pressure bottles, 20- liquid feed valves
Door, 21- liquid valve doors.
Specific implementation mode
With reference to specific embodiment, and with reference to attached drawing, the utility model is described in further detail.It should be noted that attached
Similar or identical part is annotated using same figure number in figure;The realization method not described is known in technical field
Form.
The utility model provides a kind of compressed air electric energy storing system based on more gas storage unit constant-pressure gas storages.The pressure
Contracting air electric energy storing system by caisson by carrying out the form that modularization is decomposed into several independent gas storage unit parallel connections, profit
Several liquid circulations are formed with high pressure device for storing liquid and each gas storage unit and utilize circuit, are realized to liquid volume in each gas storage unit
Control to maintain each gas storage unit pressure in energy storage and exoergic process constant so that compressed air electric energy storing system is storing up
Compressor set operates under the conditions of rated pressure always with expansion unit during capable of and releasing energy, to solve traditional constant volume storage
Device of air gas storage pressure variation issue and existing constant-pressure gas storage device underaction, cost in energy storage and exoergic process is excessively high
The problem of.
Two kinds of embodiments of the utility model are provided in this part, those skilled in the art are it is to be understood that embodiment is only
Statement to one or more of embodiments of the utility model, it is new its purpose is to more clearly be specifically described this practicality
The content of type is not intended to limit the scope of protection of the utility model.
Embodiment 1, with reference to attached drawing 1.
Embodiment 1 provides a kind of compressed air electric energy storing system based on more gas storage unit constant-pressure gas storages of mode.
As shown in Fig. 1, the compressed air electric energy storing system of the present embodiment includes:Motor 1, air compressor unit 2,
Constant-pressure gas storage device 7, three-way valve component 12, high pressure device for storing liquid 19, expansion unit 10 and generating set 11.Wherein, electric
The driving power of motivation 1 includes but not limited to the combination of the one or more of which such as grid power, nuclear power, wind-powered electricity generation, solar power generation.
Air compressor unit 2 is directly or indirectly driven by motor 1, and air inlet is communicated with surrounding air, exhaust outlet 3
It is connected to the first pipeline 5, the pressure vessel 7- being parallel on the first pipeline 5 in multiple constant-pressure gas storage devices 7 by the first valve 4
A, 7-b, 7-c, 7-d ..., 7-n, each pressure vessel is connected into the first pipeline 5 by third valve 6.
In the present embodiment, air compressor unit is the compound compressor being made of 2 or 2 or more air compressors
Cooling heat exchanger is arranged to each between adjacent air compressor and after final stage air compressor in multi-stage air compressor group in group
The outlet air of grade air compressor cools down, to realize that approximate isotherm compression reduces compressor set unit work consumptiom,
It can also be achieved the recycling to the heat of compression simultaneously.
The other end of first pipeline 5 is connected to the air inlet 9 of expansion unit 10 by the second valve 8, when closing the first valve
When door 4 and the second valve 8 of opening, expansion unit 10 is just connected to by the first pipeline 5 with constant-pressure gas storage device 7, when opening first
When valve 4 and the second valve 8 of closing, air compressor unit 2 is just connected to by the first pipeline 5 with constant-pressure gas storage device 7.
In the present embodiment, expansion unit is the multiple expansion unit being made of 2 or 2 or more expanding machines, multistage swollen
Temperature rise heat exchanger is set between adjacent expanding machine and before chopped-off head expanding machine in swollen unit, heat temperature raising is carried out to compressed air, from
And it realizes approximate isothermal expansion and improves the output work of unit compressed air.The heat source of temperature rise heat exchanger can be the recycling of energy storage stage
The regenerative resources heating such as the heat of compression, electrical heating, solar energy in one or more combinations.
The exit of each pressure vessel passes through three-way valve 12 and 19 liquid in-out mouth of high-pressure bottle point in constant-pressure gas storage device 7
It is not connected to, wherein the liquid outlet of three-way valve 12 is connected to the inlet of high-pressure bottle 19 by the second pipeline 13, in the second pipe
Hydraulic pump 17 is set on road 13, the 4th valve 18 is set at the inlet of high-pressure bottle 19, the inlet of three-way valve 12 is logical
The liquid outlet that third pipeline 14 is connected to high-pressure bottle 19 is crossed, Hydraulic Motor Generator group 15 is set on third pipeline 14,
The 5th valve 16 is arranged in the liquid outlet of high-pressure bottle 19, in this way, the second pipeline 13, third pipeline 14 are connected with high-pressure bottle 19
Liquid circulation loop is formed, carrying out pressure control to each pressure vessel makes it keep constant pressure work.
In the present embodiment, the energy storage state of the compressed air electric energy storing system based on more gas storage unit constant-pressure gas storages and release
Energy state is as follows:
Under energy storage state, the first valve 4 is opened, from upstream to downstream(I.e. by air compressor unit end to expanding set end)
The outlet end and the 4th of each pressure vessel corresponding third valve 6 and three-way valve 12 in constant-pressure gas storage device 7 is opened successively
Valve 18, closes the second valve 8, and motor 1 drives air compressor unit 2 to work;Ambient air enters air compressor
Group 2 passes through multi-stage compression and cascade EDFA, then passes through the exit 3 of air compressor unit 2, the first valve 4, the first pipeline 5
And third valve 6 sequentially enters the corresponding each pressure vessel of constant-pressure gas storage device 7 and is stored;Pass through hydraulic pump 17 simultaneously
Outlet end, second pipe of the liquid in the pressure vessel of inflated condition by three-way valve 12 will be in constant-pressure gas storage device 7
Line 13 and the 4th valve 18 inject high-pressure bottle 19, to keep the pressure of each pressure vessel in constant-pressure gas storage device 7 constant;It
Afterwards, the 5th valve 16 is opened, and successively by downstream to upstream(I.e. by expansion set end to air compressor unit end)Open constant pressure
The liquid feeding end of the corresponding three-way valve of pressure vessel to be inflated 12 in caisson 7, liquid in high-pressure bottle 19 is by the
Five valves 16 are generated electricity by Hydraulic Motor Generator group 15, then pass through the liquid feeding end injection of third pipeline 14 and three-way valve 12
In constant-pressure gas storage device 7 in pressure vessel to be inflated, to realize liquid recycling in thermal energy storage process;Energy storage terminates,
Close the corresponding third valve of each pressure vessel in the first valve 4, the 5th valve 16, the 4th valve 18 and constant-pressure gas storage device 7
Door 6 and three-way valve 12.
Under de-energized state, the second valve 8 is opened, has downstream to upstream to open each constant pressure in constant-pressure gas storage device 7 successively and holds
The liquid feeding end and the 5th valve 16 of the corresponding third valve 6 of device, three-way valve 12 close the first valve 4;Constant-pressure gas storage device
Pressure-air in 7 in each pressure vessel is by third valve 6, the first pipeline 5, the second valve 8 and the air inlet 9 for expanding unit
It is heated between carrying out grade into expansion unit 10 and multiple expansion does work, to drive generator 11 to generate electricity;Meanwhile high-pressure bottle 19
In liquid drive Hydraulic Motor Generator group 15 to generate electricity by the 5th valve 16, then pass through third pipeline 14 and in releasing energy
In the liquid feeding end injection constant-pressure gas storage device 7 of the three-way valve 12 of the pressure vessel of state in corresponding pressure vessel, to keep
The pressure of each pressure vessel is constant in constant-pressure gas storage device 7;Then, the 4th valve 18 is opened, and is beaten successively by upstream to downstream
Open be completed in constant-pressure gas storage device 7 release can the corresponding three-way valve of pressure vessel 12 outlet end, passing through hydraulic pump 17 will
The liquid being completed in constant-pressure gas storage device 7 in the pressure vessel for releasing energy passes through outlet end, the second pipeline 13 of three-way valve 12
High-pressure bottle 19 is injected with the 4th valve 18, to realize liquid recycling in thermal energy storage process;Releasing can terminate, and close second
The corresponding third valve 6 of each pressure vessel and threeway in valve 8, the 5th valve 16, the 4th valve 18 and constant-pressure gas storage device 7
Valve 12.
Under normal circumstances, it is deposited when the energy storage state of the utility model compressed air electric energy storing system and de-energized state difference
.Under energy storage state, the flow of hydraulic pump 17 and Hydraulic Motor Generator group 15 by air compressor unit 2 flow control,
To keep the blowing pressure of constant-pressure gas storage device 7 constant and the pressure stability of high-pressure bottle 19;Under de-energized state, hydraulic pump 17
With the flow of Hydraulic Motor Generator group 15 by the flow control of expansion unit 10, to keep releasing for constant-pressure gas storage device 7 that can press
The constant pressure stability with high-pressure bottle 19 of power.
Embodiment 2, with reference to attached drawing 2.
Embodiment 2 provides the compressed air electric energy storing system based on more gas storage unit constant-pressure gas storages of another way.
The structure composition of the present embodiment is similar with first embodiment, differs only in each constant pressure in constant-pressure gas storage device 7 and holds
Connection relation between device and high-pressure bottle 19.
As shown in Fig. 2, each pressure vessel is connected by 20 and first pipeline 13 of corresponding liquid valve door in constant-pressure gas storage device 7
It connects, and is connect with the second pipeline 14 by corresponding liquid flowing valve 21, it is right to form liquid circulation loop with high-pressure bottle 19
Each pressure vessel, which carries out pressure control, makes it keep constant pressure work, that is to say, that in the present embodiment, three-way valve 12 is replaced
At liquid valve door 20 and liquid flowing valve 21, other embodiment is same as Example 1.
In the present embodiment, the energy storage state of the compressed air electric energy storing system based on more gas storage unit constant-pressure gas storages and release
Energy state is as follows:
Under energy storage state, the first valve 4 is opened, each constant pressure in constant-pressure gas storage device 7 is opened successively from upstream to downstream and holds
The corresponding third valve 6 of device, liquid valve door 20 and the 4th valve 18 close the second valve 8;Motor 1 drives air compression
Unit 2 works;Ambient air enters air compressor unit 2 and passes through multi-stage compression and cascade EDFA, then passes through air pressure
It is corresponding that the exit 3 of contracting unit 2, the first valve 4, the first pipeline 5 and third valve 6 sequentially enter constant-pressure gas storage device 7
Pressure vessel stores;Meanwhile the liquid that will be in constant-pressure gas storage device 7 in the pressure vessel of inflated condition by hydraulic pump 17
High-pressure bottle 19 is injected by liquid valve door 20, the second pipeline 13 and the 4th valve 18, to keep constant pressure in constant-pressure gas storage device 7
The pressure of container is constant;Then, the 5th valve 16 is opened, and has downstream to upstream to open successively in constant-pressure gas storage device 7 and waits filling
The corresponding liquid flowing valve 21 of pressure vessel of gas, the liquid in high-pressure bottle 19 are generated electricity by the 5th valve 16 by hydraulic motor
Unit 15 generates electricity, and then passes through third pipeline 14 and liquid flowing valve 21 injects pressure vessel to be inflated in constant-pressure gas storage device 7
In, to realize liquid recycling in thermal energy storage process;Energy storage terminates, and closes the first valve 4, the 5th valve 16, the 4th valve
The corresponding third valve 6 of each pressure vessel, liquid valve door 20 and liquid flowing valve 21 in door 18 and constant-pressure gas storage device 7.
Under de-energized state, the second valve 8 is opened, each constant pressure in constant-pressure gas storage device 7 is opened by downstream to upstream successively and is held
The corresponding third valve 6 of device, liquid flowing valve 21 and the 5th valve 16 close the first valve 4;Each perseverance in constant-pressure gas storage device 7
Pressure-air in pressure vessel enters swollen by the air inlet 9 of third valve 6, the first pipeline 5, the second valve 8 and expansion unit
Swollen unit 10 carries out heating and multiple expansion acting between grade, to drive generator 11 to generate electricity;Meanwhile the liquid in high-pressure bottle 19
Body drives Hydraulic Motor Generator group 15 to generate electricity by the 5th valve 16, then passes through third pipeline 14 and in de-energized state
The liquid flowing valve 21 of pressure vessel injects in constant-pressure gas storage device 7 in corresponding pressure vessel, to keep in constant-pressure gas storage device 7
The pressure of each pressure vessel is constant;Then, the 4th valve 18 is opened, and constant-pressure gas storage device 7 is opened by upstream to downstream successively
In be completed release can the corresponding liquid valve door 20 of pressure vessel, will be completed and released in constant-pressure gas storage device 7 by hydraulic pump 17
Liquid in the pressure vessel of energy injects high-pressure bottle 19 by liquid valve door 20, the first pipeline 13 and the 4th valve 18, with reality
Existing liquid recycling in thermal energy storage process;Releasing can terminate, close the second valve 8, the 5th valve 16, the 4th valve 18 and
The corresponding third valve 6 of each pressure vessel, liquid valve door 20 and liquid flowing valve 21 in constant-pressure gas storage device 7.
So far, it is empty to compression of two embodiments of the utility model based on more gas storage unit constant-pressure gas storages to have been combined attached drawing
Gas electric energy storing system is described in detail.
Particular embodiments described above has carried out into one the purpose of this utility model, technical solution and advantageous effect
Step is described in detail, it should be understood that the foregoing is merely specific embodiment of the utility model, is not limited to this
Utility model, within the spirit and principle of the utility model, any modification, equivalent substitution, improvement and etc. done should all wrap
Containing being within the protection scope of the utility model.
Claims (8)
1. a kind of compressed air electric energy storing system, characterized in that including:
Constant-pressure gas storage device is made of pressure vessel, and pressure vessel Nei Qinei prestores liquid;
High pressure device for storing liquid, including high-pressure bottle, the high-pressure bottle are connected to the non-pressure vessel in constant-pressure gas storage device;
Energy storage component, including motor and air compressor unit, air compressor unit is by motor drive, the air compressor unit
Exhaust outlet be connected to the oral area of pressure vessel;Under energy storage state, motor driven air compressor group by atmospheric air into
Row is compressed and is delivered in pressure vessel, and the liquid to prestore in it is expelled in high-pressure bottle to maintain its own by pressure vessel
Pressure is constant, and when pressure reduction in pressure vessel, high-pressure bottle recharges liquid to it;
Release can component, including generator and expansion unit, expansion unit drive generator operation, the air inlet of the expansion unit with
The oral area of pressure vessel is connected to;Under de-energized state, pressure vessel discharges air therein to expansion unit, by expanding unit
Expansion work drive electrical power generators, while high-pressure bottle to pressure vessel filling liquid to maintain its pressure constant, complete release can
Remaining liq is injected high-pressure bottle by pressure vessel.
2. compressed air electric energy storing system according to claim 1, characterized in that constant-pressure gas storage device includes at least one
A pressure vessel, when pressure vessel is multiple, these pressure vessels are connected in parallel on energy storage component and release can be between component.
3. compressed air electric energy storing system according to claim 2, characterized in that the electric energy storing system includes connection
Air compressor, multiple pressure vessels and the first pipeline for expanding unit, exhaust ports of first pipeline in air compressor
First valve is set, and the second valve is arranged in the first pipeline at the air inlet of expansion unit, and multiple pressure vessels pass through respective phase
The third valve in parallel matched is on the first pipeline.
4. compressed air electric energy storing system according to claim 2, characterized in that between pressure vessel and high-pressure bottle
Equipped with the second pipeline for discharging liquid and the third pipeline for recharging liquid, the second pipeline is equipped with hydraulic pump and the 4th
Valve, third pipeline are equipped with Hydraulic Motor Generator group and the 5th valve.
5. compressed air electric energy storing system according to claim 4, characterized in that distinguish the outlet of multiple pressure vessels
With the second pipeline and third pipeline connection.
6. compressed air electric energy storing system according to claim 5, characterized in that the outlet of multiple pressure vessels is arranged
The outlet end of three-way valve, three-way valve is connected in parallel on the second pipeline, and the liquid feeding end of triple valve is connected in parallel on third pipeline;
Under energy storage state, the outlet end of the three-way valve in the pressure vessel exit in inflated condition is opened, and passes through second
Liquid therein is expelled in high-pressure bottle by pipeline and hydraulic pump, meanwhile, the three-way valve of pressure vessel to be inflated into
Liquid end is opened, and the liquid in high-pressure bottle passes through Hydraulic Motor Generator group and third pipeline filling liquid thereto;In de-energized state
Under, the liquid feeding end of the pressure vessel exit three-way valve in de-energized state is opened, and the liquid in high-pressure bottle passes through hydraulic pressure
Motor generator group and third pipeline filling liquid thereto, meanwhile, be completed release can pressure vessel exit three-way valve
Outlet end is opened, and liquid therein is expelled in high-pressure bottle by the second pipeline and hydraulic pump.
7. compressed air electric energy storing system according to claim 5, characterized in that be respectively set on multiple pressure vessels
First outlet and second outlet, first outlet are connected to the second pipeline by liquid valve door, and second outlet is connected to by liquid flowing valve
Third pipeline;
Under energy storage state, the liquid valve door of the pressure vessel in inflated condition is opened, will by hydraulic pump and the second pipeline
Liquid therein is expelled in high-pressure bottle, meanwhile, the liquid flowing valve of pressure vessel to be inflated is beaten successively from upstream to downstream
It opens, the liquid in high-pressure bottle passes through Hydraulic Motor Generator group and third pipeline filling liquid thereto;Under de-energized state, it is in
The liquid flowing valve of the pressure vessel of de-energized state is opened, and the liquid in high-pressure bottle passes through Hydraulic Motor Generator group and third pipe
Road direction wherein filling liquid, meanwhile, the liquid valve door that the pressure vessel for releasing energy is completed is opened successively from downstream to upstream, passes through hydraulic pressure
Liquid therein is expelled in high-pressure bottle by pump and the second pipeline.
8. compressed air electric energy storing system according to any one of claim 1 to 7, characterized in that
Under energy storage state, the pressure vessel in inflated condition is expelled to the fluid flow of high-pressure bottle by air compressor unit
The flow for being pressed into the gas of constant-pressure gas storage device determines;High-pressure bottle should be equal to place to the filling liquid flow of pressure vessel to be inflated
It is discharged into the fluid flow of high-pressure bottle in the pressure vessel of inflated condition;
Under de-energized state, high-pressure bottle is entered to the filling liquid flow of the pressure vessel in de-energized state by constant-pressure gas storage device
The gas flow for expanding unit expansion work determines;Be completed release can pressure vessel be expelled to the fluid flow of high-pressure bottle and answer
Equal to high-pressure bottle to the fluid flow of the pressure vessel filling liquid in de-energized state.
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| CN201721484112.4U CN207999295U (en) | 2017-11-09 | 2017-11-09 | A kind of compressed air electric energy storing system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107780989A (en) * | 2017-11-09 | 2018-03-09 | 浙江大学 | A kind of compressed air electric energy storing system |
| CN111550293A (en) * | 2020-04-20 | 2020-08-18 | 西安交通大学 | Efficient variable-working-condition compressed gas energy release system and method |
| CN112855495A (en) * | 2021-01-20 | 2021-05-28 | 北京航空航天大学 | Liquid-driven ultrahigh-pressure compressed air energy storage system and method thereof |
-
2017
- 2017-11-09 CN CN201721484112.4U patent/CN207999295U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107780989A (en) * | 2017-11-09 | 2018-03-09 | 浙江大学 | A kind of compressed air electric energy storing system |
| CN111550293A (en) * | 2020-04-20 | 2020-08-18 | 西安交通大学 | Efficient variable-working-condition compressed gas energy release system and method |
| CN112855495A (en) * | 2021-01-20 | 2021-05-28 | 北京航空航天大学 | Liquid-driven ultrahigh-pressure compressed air energy storage system and method thereof |
| CN112855495B (en) * | 2021-01-20 | 2021-11-05 | 北京航空航天大学 | Liquid-driven ultrahigh-pressure compressed air energy storage system and method thereof |
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