CN106014508A - Compressed air energy storage system - Google Patents
Compressed air energy storage system Download PDFInfo
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- CN106014508A CN106014508A CN201610546070.6A CN201610546070A CN106014508A CN 106014508 A CN106014508 A CN 106014508A CN 201610546070 A CN201610546070 A CN 201610546070A CN 106014508 A CN106014508 A CN 106014508A
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- Prior art keywords
- air
- tank body
- heat
- compressed
- storage tank
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/02—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of multiple-expansion type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B25/00—Multi-stage pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B41/00—Pumping installations or systems specially adapted for elastic fluids
- F04B41/02—Pumping installations or systems specially adapted for elastic fluids having reservoirs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D2020/0065—Details, e.g. particular heat storage tanks, auxiliary members within tanks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention provides a compressed air energy storage system. The compressed air energy storage system comprises a compressor set, an expander set, and a constant-temperature thermal insulation air storage device arranged between the compressor set and the expander set; the constant-temperature thermal insulation air storage device includes an air storage tank body with a storage air cavity, and a thermal insulation layer wrapped on the outer surface of the air storage tank body; and an air inlet and an air outlet are formed in the air storage tank body. The compressed air energy storage system uses the storage air cavity of the air storage tank body for storing high-pressure and high-temperature compressed air produced in the energy storage phase, uses the thermal insulation layer for preventing heat in the air storage tank body from dissipating in the environment, can reduce heat dissipation of air in the air storage device to the external, reduces the influence of the environment temperature change to the temperature of the air in the air storage device, and improves the energy storage efficiency.
Description
Technical field
The present invention relates to compressed-air energy storage technical field of power generation, more particularly, it relates to a kind of compression sky
Gas energy storage system.
Background technology
Compressed-air energy storage refers to the rich electric power on low power consumption period electrical network or the ripple such as wind-powered electricity generation, solar energy
The electric power that dynamic property is violent is sealed in caisson for compressed air, the pressure-air after compressing,
Discharge compressed air when needing, promote air turbine to drive the energy storage mode of electrical power generators.Existing pressure
In contracting air energy storage systems, caisson generally uses underground gas storage room or artificial air accumulator.
Underground gas storage room has the advantages such as cost is low, gas storage capacity is big, is mainly used in large-scale compression air
Energy-storage system.However it is necessary that the specific geological environment of selection, and in system operation, in air storage chamber
Air would generally carry out heat exchange with wall, causes thermal loss, makes the energy storage efficiency of system reduce.Due to
Gas storage room air is less with the convection transfer rate of wall, and gas storage and deflation course differ with isothermal process
Farther out, therefore gas storage indoor temperature change generated in case is big, causes rate of pressure change quickly.At specific air storage chamber
In pressure range, system operation time shortens, and causes energy storage density to reduce.
Artificial air accumulator is easily manufactured, and the requirement to place is low, and gas storage pressure is higher simultaneously, but gas storage is held
Measuring relatively small, cost is the most of a relatively high, is mainly used in middle-size and small-size compressed-air energy-storage system.To pass
When the cylinder of steel of system is as air accumulator, owing to the heat conductivility of cylinder of steel is preferable, ambient temperature can be in air accumulator
Air themperature produce impact.Such as in the winter that ambient temperature is relatively low, the air in air accumulator can be outwards
Dissipated heat, causes air themperature to reduce, and air enthalpy reduces, the air acting ability fall of unit mass
Low, that system is overall energy storage efficiency decline.
In sum, how to reduce air heat radiation outwardly in caisson, to reduce ambient temperature change
Change the impact of air themperature in caisson, and then the energy storage efficiency of raising compressed-air energy-storage system,
It is current those skilled in the art technical problems urgently to be resolved hurrily.
Summary of the invention
In view of this, it is an object of the invention to provide a kind of compressed-air energy-storage system, to reduce gas storage
Air heat radiation outwardly in device, thus reduce variation of ambient temperature to air themperature in caisson
Impact, and then improve the energy storage efficiency of compressed-air energy-storage system.
In order to achieve the above object, the present invention provides following technical scheme:
A kind of compressed-air energy-storage system, including compressor bank, expands unit, also includes being arranged on described
Constant temperature heat insulating caisson between compressor bank and described expansion unit, described constant temperature heat insulating caisson
Including:
There is the gas storage tank body of storage air cavity, described gas storage tank body is provided with air intlet and air outlet slit；
It is wrapped in the insulation heat insulation layer of described air accumulator external surface.
Preferably, in above-mentioned compressed-air energy-storage system, described constant temperature heat insulating caisson also includes arranging
Phase-transition heat-storage tube bank in described air accumulator body, is filled with phase-transition heat-storage in the tube bank of described phase-transition heat-storage and is situated between
Matter.
Preferably, in above-mentioned compressed-air energy-storage system, on every heat accumulation pipe of described phase-transition heat-storage tube bank
All being arranged with annular plate, described annular plate is perpendicular to the axis of described heat accumulation pipe.
Preferably, in above-mentioned compressed-air energy-storage system, described annular plate is multiple, and along described storage
Axially being uniformly distributed of heat pipe.
Preferably, in above-mentioned compressed-air energy-storage system, described heat accumulation pipe is elliptical tube, described circumferential rib
Plate outer peripheral face is circular, and the inner peripheral surface of described annular plate is fitted with described heat accumulation pipe.
Preferably, in above-mentioned compressed-air energy-storage system, described phase-change heat accumulation medium is sodium acetate.
Preferably, in above-mentioned compressed-air energy-storage system, described air intlet is two, is arranged at institute
State one end of gas storage tank body；
Described air outlet slit is two, is arranged at the other end of described gas storage tank body.
Preferably, in above-mentioned compressed-air energy-storage system, the line of two described air intlets is by described
Gas storage tank body axle center, the line of two described air outlet slits is by described gas storage tank body axle center, and two institutes
The line stating air intlet is parallel to the line of two described air outlet slits.
Preferably, in above-mentioned compressed-air energy-storage system, described gas storage tank body is additionally provided with relief valve.
Preferably, in above-mentioned compressed-air energy-storage system, described gas storage tank body is steel tank, described guarantor
Temperature heat insulation layer is glass cotton layer.
From above-mentioned technical scheme it can be seen that the compressed-air energy-storage system that the present invention provides includes compression
Unit, expand unit, be arranged on compressor bank and the constant temperature heat insulating caisson expanded between unit, permanent
The adiabatic caisson of temperature includes having the gas storage tank body of storage air cavity and be wrapped in the guarantor of air accumulator external surface
Temperature heat insulation layer, gas storage tank body is provided with air intlet and air outlet slit.
The present invention utilizes the compression sky of the high pressure-temperature of the storage air cavity storage energy storage stage production of gas storage tank body
Gas, and utilize insulation heat insulation layer to prevent the heat in air accumulator body to be lost in environment, it is possible to reduce
Air heat radiation outwardly in caisson, thus reduce variation of ambient temperature to air in caisson
The impact of temperature, and then improve the energy storage efficiency of compressed-air energy-storage system.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality
Execute the required accompanying drawing used in example or description of the prior art to be briefly described, it should be apparent that below,
Accompanying drawing in description is some embodiments of the present invention, for those of ordinary skill in the art, not
On the premise of paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 be the embodiment of the present invention provide compressed-air energy-storage system constant temperature heat insulating caisson just
Pseudosection；
Fig. 2 is the side of the constant temperature heat insulating caisson of the compressed-air energy-storage system that the embodiment of the present invention provides
Pseudosection；
Fig. 3 is the structural representation of the compressed-air energy-storage system that the embodiment of the present invention provides.
Detailed description of the invention
Embodiments provide a kind of compressed-air energy-storage system, it is possible to reduce air in caisson
Heat radiation outwardly, thus reduce variation of ambient temperature to the impact of air themperature in caisson, and then
Improve the energy storage efficiency of compressed-air energy-storage system.
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with this
Accompanying drawing in bright embodiment, is clearly and completely described the technical scheme in the embodiment of the present invention,
Obviously, described embodiment is a part of embodiment of the present invention rather than whole embodiments.Based on
Embodiment in the present invention, those of ordinary skill in the art are obtained under not making creative work premise
The every other embodiment obtained, broadly falls into the scope of protection of the invention.
Refer to accompanying drawing 1-3, the compressed-air energy-storage system that the embodiment of the present invention provides includes compressor bank
03, expand unit 06, also include the constant temperature heat insulating being arranged on compressor bank 03 and expanding between unit 06
Caisson 01, constant temperature heat insulating caisson 01 includes gas storage tank body 1 and the bag with storage air cavity 11
It is rolled in the insulation heat insulation layer 2 of gas storage tank body 1 outer surface, gas storage tank body 1 is provided with air intlet 3 and sky
Gas outlet 6.
Concrete, the compressed-air energy-storage system of the present invention includes compressor bank 03, expansion unit 06, changes
Hot device 02, heater 07, hot tank 05, cold tank 08, generator motor 04, actuating device, it is arranged on
Constant temperature heat insulating caisson 01 between compressor bank 03 and expansion unit 06 and corresponding control system,
Generator motor 04 is connected by clutch and compressor bank 03 and expansion unit 06 respectively.Compressor
Group 03 employing compound compressor is arranged, arranges heat exchange between compressors at different levels and after final compressor
Device 02, cooling medium and hot-air carry out heat exchange in heat exchanger 02, reduce air themperature, by the heat of compression
It is stored in hot tank 05.Expanding unit 06 uses multiple expansion engine to arrange, with each before chopped-off head decompressor
Heater 07, the pressure-air that the thermal medium in hot tank 05 discharges is arranged with air accumulator between level decompressor
Carry out heat exchange, add hot-air, the heat of compression is returned to air.
The present invention utilizes the storage air cavity 11 of gas storage tank body 1 to store the pressure of the high pressure-temperature that the energy storage stage produces
Contracting air, and utilize insulation heat insulation layer 2 to prevent the heat in gas storage tank body 1 to be lost in environment (generally
In caisson, the temperature of air can be higher than ambient temperature), it is possible to reduce in caisson air to
Extraneous heat radiation, thus reduce variation of ambient temperature to the impact of air themperature in caisson, and then
Improve the energy storage efficiency of compressed-air energy-storage system.
Preferably in technical scheme, constant temperature heat insulating caisson 01 also includes being arranged in gas storage tank body 1
Phase-transition heat-storage tube bank 4, is filled with phase-change heat accumulation medium in phase-transition heat-storage tube bank 4.The caisson of the present invention
Internal layout phase-transition heat-storage tube bank 4, by setting suitable phase-change heat accumulation medium in phase-transition heat-storage tube bank 4
Consumption, it is ensured that the variations in temperature of air is the least in thermal energy storage process, close to isothermal process.
The phase-change heat accumulation medium of above-mentioned phase-transition heat-storage tube bank 4 filling is during gas storage, it is possible to absorb high pressure
The heat that air is brought into, is stored in the heat of air in the phase-change heat accumulation medium of phase-transition heat-storage tube bank 4,
Make the air themperature in caisson close to constant, maintain the temperature constant state within caisson.In like manner exist
In deflation course, air can expand cooling, and phase-change heat accumulation medium releases heat so that temperature in caisson
Degree remains stable.Due to maintain air themperature in steady statue, therefore can slow down air rate of pressure change,
Thus improve the energy storage density of system.
In application process, compound compressor is connected together by transmission main shaft, generator motor 04 and transmission
Main shaft connects, and drives compressor to rotate together.Air initially enters first order compressor, after overcompression,
Air themperature raises, and cools subsequently into first order heat exchanger 02, and the heat of compression is stored in cooling
In medium, and it is summarised in hot tank 05.In like manner, air flows through compound compressor and heat exchanger 02.High pressure
The air of middle temperature enters caisson, is provided with phase-transition heat-storage tube bank 4 in caisson, and heat is transmitted by air
To the phase-change heat accumulation medium in phase-transition heat-storage tube bank 4, thus maintain the temperature of air in caisson basic
Constant.Meanwhile, the insulation heat insulation layer 2 of caisson outer wrap, it is possible to stop the heat of air to be lost to
In external environment, it is ensured that air maintains steady temperature.
Multiple expansion engine is connected with the electromotor of generator motor 04 by transmission main shaft, and decompressor drives to be sent out
Electric machine rotation produces electric energy.Heater 07 it was provided with, heat Jie in hot tank 05 before every one-level decompressor
Matter enters heater 07, and air and thermal medium carry out heat exchange in heater 07 thus improve Air Temperature
Degree.Air flows successively through heater 07 at different levels and decompressor, blood pressure lowering of doing work in decompressor, finally enters
Environment.After thermal medium flows through heater 07, temperature reduces, and finally collects in cold tank 08 in case following next time
Ring uses.
During air enters caisson, the most outwardly dissipated heat, and air themperature holding is basic
Constant；In caisson deflation course, along with deflation course is carried out, phase transformation in phase-transition heat-storage tube bank 4
In heat storage medium, the heat of storage can return to air, thus maintains air themperature constant.Therefore whole
In cyclic process, caisson air temperature remains stable all the time, thus forms the compression of adiabatic constant temperature
Air energy storage systems, improves energy storage efficiency and the energy storage density of compressed-air energy-storage system, thus improves
The economy that system is run.
The tube bank 4 of above-mentioned phase-transition heat-storage is bigger with the contact area of air, it is simple to ensure energy storage density, this
Bright can also be not provided with above-mentioned phase-transition heat-storage tube bank 4, or be replaced by other structures, as at gas storage tank body
The inner surface of 1 arranges phase-transition heat-storage layer, and the maintenance air themperature reaching same is constant, it is close to improve system stored energy
The effect of degree, this is no longer going to repeat them for the present invention.
Further, in the adiabatic caisson of temperature, the most sheathed on every heat accumulation pipe of phase-transition heat-storage tube bank 4
Annular plate 5, annular plate 5 is had to be perpendicular to the axis of heat accumulation pipe.Concrete, phase-transition heat-storage tube bank 4
Every heat accumulation pipe all axial arranged along gas storage tank body 1.The present invention utilizes annular plate 5 to add air
With the heat exchange area of heat accumulation pipe, improve the heat convection effect of air and tube wall, thus further enhance
The constant temperature effect that in caisson, air is overall.Certainly, above-mentioned annular plate 5 can also out of plumb store
The axis of heat pipe；The present invention can also be not provided with above-mentioned annular plate 5, by changing the outer surface of heat accumulation pipe
Shape or projection, groove are set；Also or by arranging the other types such as aciculiform rib, H-shaped fin rib
Fin reach the same effect increasing air and the heat exchange area of heat accumulation pipe.
In the constant temperature heat insulating caisson 01 that above-described embodiment provides, annular plate 5 is multiple, and along storing
Axially being uniformly distributed of heat pipe.This arrangement is easy to assembling, ensure that the uniformity of heat exchange simultaneously.
Above-mentioned annular plate 5 can also be random spaced apart or several are superimposed as one group and are fixed on same
Individual position.
In order to optimize technique scheme further, heat accumulation pipe is elliptical tube, and annular plate 5 outer peripheral face is
Circle, the inner peripheral surface of annular plate 5 is fitted with heat accumulation pipe.So, the outer peripheral face cross section of heat accumulation pipe
It is shaped as ellipse, it is possible to prevent phase-change heat accumulation medium from occurring to be separated, it is ensured that in phase-change heat accumulation medium
The heat-conducting effect in portion；Accordingly, the inner peripheral surface cross sectional shape of annular plate 5 is oval, annular plate 5
Can be welded on heat accumulation pipe and can also interference be set on heat accumulation pipe.Above-mentioned heat accumulation pipe can also be rectangle
Pipe, round tube or other shapes, annular plate 5 outer peripheral face can also be rectangle, ellipse etc., this
This is not specifically limited by invention.
Above-mentioned phase-change heat accumulation medium is sodium acetate, i.e. fills sodium acetate in phase-transition heat-storage tube bank 4.This enforcement
Phase-change heat accumulation medium selective freezing hydrated salt Materials Acetic acid sodium (CH3COONa 3H2O) of example,
This material has that latent heat of phase change is big, thermal conductivity is high, phase transformation time the advantage such as change in volume is little.Certainly, on
State phase-transition heat-storage tube bank 4 and can also fill the phase-change heat accumulation medium such as fuse salt, metal or alloy.
In the present invention one specific embodiment, air intlet 3 is two, is arranged at the one of gas storage tank body 1
End；Air outlet slit 6 is two, is arranged at the other end of gas storage tank body 1.The present invention is at gas storage tank body 1
One end two air intlets 3 are set, the other end arranges two air outlet slits 6, makes air intlet 3 and sky
The distance of gas outlet 6 is longer, it is possible to increase the mixed flow effect of air, thus improves in caisson
The uniformity of portion's air themperature distribution, strengthens the heat transfer effect of air and phase-change heat accumulation medium.Simultaneously this
Bright two air intlets 3 are set and two air outlet slits 6 can improve gas storage efficiency and venting efficiency.This
Air intlet 3 and the control outlet of invention can also be one or other numbers.
Further, the line of two air intlets 3 passes through gas storage tank body 1 axle center, two air outlet slits 6
Line by gas storage tank body 1 axle center, and the line of two air intlets 3 is parallel to two air outlet slits 6
Line.In the present embodiment, two air intlets 3 are oppositely arranged, and both wire lengths are air accumulator
The diameter of body 1；Two air outlet slits 6 are oppositely arranged, and both wire lengths are the straight of gas storage tank body 1
Footpath, and air intlet 3 and air outlet slit 6 be arranged on the same of gas storage tank body 1 the most correspondingly
On circumferencial direction, it is possible to ensure the uniformity of air turnover, simultaneously facilitate processing and assemble with miscellaneous part.
Certainly, above-mentioned two air intlet 3 can also be without being oppositely arranged, and makes both lines be positioned at gas storage tank body 1
The side of axis；Above-mentioned two air outlet slit 6 can not also be oppositely arranged, and makes both lines be positioned at
The side of the axis of gas storage tank body 1.
In order to optimize technique scheme further, gas storage tank body 1 is additionally provided with relief valve 7.Relief valve
7, for maintaining in proper range by the internal pressure of gas storage tank body 1, prevent the infringement that hypertonia causes.
The present invention can also arrange the piezometer of detection gas storage tank body 1 internal pressure, by the force value people obtained
The internal pressure of industry control gas storage tank body 1.
In order to improve intensity and the service life of gas storage tank body 1, gas storage tank body 1 is preferably steel tank.
Gas storage tank body 1 can also be other metal cans, such as aluminum alloy tank body etc..
In application process, in the energy storage stage, air enters gas storage by multistage compressor and heat exchanger 02 and fills
Putting, now air themperature is higher, and the entrance of air can make the temperature of inside raise.Fill along with gas storage simultaneously
Putting inner air quality to be continuously increased, air is gradually compressed, and also results in air themperature and raises.High temperature
Air and phase-transition heat-storage tube bank 4 and steel tank carry out heat convection, transfer heat to phase transformation and store
Thermal medium and steel tank.Owing to phase-change heat accumulation medium has the highest latent heat of phase change, steel tank is also
Having higher specific heat capacity, therefore during absorbing heat, own temperature increase is the least, and reaches
Purpose to air cooling-down.
Releasing the energy stage, the pressure-air in caisson flows into decompressor and produces mechanical energy.Along with air
Outflow, the air themperature in caisson can decline rapidly.Now phase-transition heat-storage tube bank 4 and steel
The heat of storage can be discharged by tank body, adds hot-air, thus slow down air temperature downward trend,
Increase the external work done of unit mass air, thus improve the energy storage efficiency of compressed-air energy-storage system
And energy storage density.
In the present invention one specific embodiment, insulation heat insulation layer 2 is glass cotton layer, the gas storage tank body 1 of the present invention
Outer wrap glass cotton layer, prevents heat to be lost in environment, and insulation effect is preferable.Above-mentioned insulation is adiabatic
Layer 2 can also use the heat-insulation materials such as asbestos, rock wool or expanded perlite.
In this specification, each embodiment uses the mode gone forward one by one to describe, and each embodiment stresses
Being the difference with other embodiments, between each embodiment, identical similar portion sees mutually.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses
The present invention.Multiple amendment to these embodiments will be aobvious and easy for those skilled in the art
See, generic principles defined herein can without departing from the spirit or scope of the present invention,
Realize in other embodiments.Therefore, the present invention is not intended to be limited to the embodiments shown herein,
And it is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (10)
1. a compressed-air energy-storage system, including compressor bank (03), expands unit (06), its
It is characterised by, also includes being arranged between described compressor bank (03) and described expansion unit (06)
Constant temperature heat insulating caisson (01), described constant temperature heat insulating caisson (01) including:
There is the gas storage tank body (1) of storage air cavity (11), described gas storage tank body (1) is arranged free
Gas import (3) and air outlet slit (6)；
It is wrapped in the insulation heat insulation layer (2) of described gas storage tank body (1) outer surface.
Compressed-air energy-storage system the most according to claim 1, it is characterised in that described constant temperature is exhausted
Hot caisson (01) also includes phase-transition heat-storage tube bank (4) being arranged in described gas storage tank body (1),
It is filled with phase-change heat accumulation medium in described phase-transition heat-storage tube bank (4).
Compressed-air energy-storage system the most according to claim 2, it is characterised in that described phase transformation stores
All being arranged with annular plate (5) on every heat accumulation pipe of heat pipe bundle (4), described annular plate (5) hangs down
Straight in the axis of described heat accumulation pipe.
Compressed-air energy-storage system the most according to claim 3, it is characterised in that described circumferential rib
Plate (5) is multiple, and being axially uniformly distributed along described heat accumulation pipe.
Compressed-air energy-storage system the most according to claim 4, it is characterised in that described heat accumulation pipe
For elliptical tube, described annular plate (5) outer peripheral face is circular, the inner peripheral surface of described annular plate (5)
Fit with described heat accumulation pipe.
6. according to the compressed-air energy-storage system described in any one of claim 2-5, it is characterised in that institute
Stating phase-change heat accumulation medium is sodium acetate.
Compressed-air energy-storage system the most according to claim 1, it is characterised in that described air enters
Mouth (3) is two, is arranged at one end of described gas storage tank body (1)；
Described air outlet slit (6) is two, is arranged at the other end of described gas storage tank body (1).
Compressed-air energy-storage system the most according to claim 7, it is characterised in that two described air
The line of import (3) is by described gas storage tank body (1) axle center, the company of two described air outlet slits (6)
Line is by described gas storage tank body (1) axle center, and the line of two described air intlets (3) is parallel to two
The line of individual described air outlet slit (6).
Compressed-air energy-storage system the most according to claim 1, it is characterised in that described air accumulator
Relief valve (7) it is additionally provided with on body (1).
Compressed-air energy-storage system the most according to claim 1, it is characterised in that described gas storage
Tank body (1) is steel tank, and described insulation heat insulation layer (2) is glass cotton layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610546070.6A CN106014508A (en) | 2016-07-12 | 2016-07-12 | Compressed air energy storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610546070.6A CN106014508A (en) | 2016-07-12 | 2016-07-12 | Compressed air energy storage system |
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| Publication Number | Publication Date |
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| CN106014508A true CN106014508A (en) | 2016-10-12 |
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ID=57108902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610546070.6A Pending CN106014508A (en) | 2016-07-12 | 2016-07-12 | Compressed air energy storage system |
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