CN104005802A - Compressed air energy storage system - Google Patents
Compressed air energy storage system Download PDFInfo
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- CN104005802A CN104005802A CN201310061963.8A CN201310061963A CN104005802A CN 104005802 A CN104005802 A CN 104005802A CN 201310061963 A CN201310061963 A CN 201310061963A CN 104005802 A CN104005802 A CN 104005802A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 94
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 89
- 230000001914 calming effect Effects 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims 7
- 239000002440 industrial waste Substances 0.000 claims 1
- 239000002918 waste heat Substances 0.000 claims 1
- 238000003860 storage Methods 0.000 abstract description 17
- 238000007906 compression Methods 0.000 description 20
- 238000000034 method Methods 0.000 description 18
- 230000006835 compression Effects 0.000 description 16
- 230000008569 process Effects 0.000 description 16
- 238000010438 heat treatment Methods 0.000 description 11
- 230000002441 reversible effect Effects 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 235000019628 coolness Nutrition 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The invention provides a compressed air energy storage system. The compressed air energy storage system comprises an energy storage assembly, an air storage device, a water pump and an energy releasing assembly; the air storage device is a closed container for prestoring water; the water pump is arranged on a pipeline of the gas storage device; the energy storage assembly comprises an electromotor and a compressed unit which is provided with at least one compressor; a rotary shaft of the compressed unit is connected with a rotary shaft of the electromotor; an air outlet of the compressed unit is connected with an air inlet of the air storage device through a valve; the energy releasing assembly comprises an electric generator and an expansion unit which is provided with at least one expansion machine; a rotary shaft of the expansion unit is connected with a rotary shaft of the electric generator; an air inlet of the expansion unit is connected with an air outlet of the gas storage device through a valve. According to the compressed air energy storage system, the expansion unit and the compressed unit work under constant pressure and the energy storage system is high in efficiency and good in safety.
Description
Technical field
The present invention relates to electrical power storage technical field, particularly a kind of compressed-air energy-storage system.
Background technique
In recent years, the large-scale unit in China's electric power network is on the increase, and self power adjustments ability of electric power system is restricted, and the peak-to-valley ratio of system loading constantly increases, and in order to guarantee power grid security, operation economically, must build electric energy storing system.Particularly wind-powered electricity generation develops on a large scale, due to its intermittent feature, the safety of electrical network is on the hazard, and in order more efficiently to utilize the renewable energy sourcess such as wind energy, must possess electric energy storing system and match.
At present, extensive electric energy storing system technology draw water energy storage and compressed-air energy storage, the energy storage technology that draws water is subject to landform restriction, and pressure changes in the caisson of conventional compression air energy storage technology, in compression process, caisson pressure constantly increases, and pressure constantly declines in inflation process, make gas compressor and decompressor be difficult to stable operation, and cause a large amount of energy losses.
Summary of the invention
(1) technical problem that will solve
For solving above-mentioned one or more problems, the invention provides a kind of compressed-air energy-storage system.
(2) technological scheme
According to an aspect of the present invention, provide a kind of compressed-air energy-storage system.This compressed-air energy-storage system comprises: energy storage component, caisson, water pump and release can assembly, wherein: the seal container that caisson is prestoring water; Water pump, is arranged at water source to the pipeline of caisson; Energy storage component comprises: motor; The unit of calming the anger, comprise at least 1 gas compressor, its rotating shaft is connected with the rotating shaft of motor, its air outlet is connected with the suction port of caisson by valve, under the driving of motor, this unit of calming the anger is pressed into caisson by air and stores, and the compressed Bas Discharged of water in caisson is to water source; Release and can comprise by assembly: generator; Expansion unit, comprise at least 1 decompressor, its rotating shaft is connected with the rotating shaft of generator, its suction port is connected with the air outlet of caisson by valve, the pressurized air of caisson does work by decompressor and drives generator to generate electricity, water pump injects water in caisson simultaneously, fills up the volume that pressurized air is discharged.
(3) beneficial effect
From technique scheme, can find out, compressed-air energy-storage system of the present invention has following beneficial effect:
(1) utilize the water yield in caisson to control caisson inner pressure constant, calm the anger in thermal energy storage process and exoergic process unit and expansion unit of energy-storage system is operated under constant voltage environment always, thereby solve the problem that in the energy storage of conventional compression air, in caisson, pressure changes, because expansion unit is all to work under constant voltage with the unit of calming the anger, so energy-storage system efficiency is high, Security good;
(2) utilize the cooling compressor air inlet machine of inter-stage cooling unit, the air inlet of inter-stage heating equipment heating decompressor, reduce compression process wasted work, increase inflation process and go out merit, improve system effectiveness;
(3) advantages such as it is unrestricted that this compressed-air energy-storage system also has the energy storage cycle, is applicable to various types of power supplys, environmentally friendly, have wide prospect of the application.
Accompanying drawing explanation
Fig. 1 is the structural representation of first embodiment of the invention compressed-air energy-storage system;
Fig. 2 is the structural representation of second embodiment of the invention compressed-air energy-storage system;
Fig. 3 is the structural representation of third embodiment of the invention compressed-air energy-storage system;
Fig. 4 is the structural representation of fourth embodiment of the invention compressed-air energy-storage system.
[primary component symbol description of the present invention]
1-motor; 12-caisson;
28-water pump; 23-generator;
2-low pressure compressor; 6-high-pressure compressor;
18-high pressure expansion machine; 22-low-pressure expansion machine;
31-hydraulic generator; 35-Reversible Pump-Turbine group;
37-low pressure compressor; 41-intermediate pressure compressor; 45-high-pressure compressor;
52-high pressure expansion machine; 56-middle-pressure expansion machine; 60-low-pressure expansion machine;
4,8,39,43-cooler; 16,20,54,58-heater
10,14,25,29,33-valve
3,5,7,9,11,13,15,17,19,21,24,26,27,30-pipeline;
32,34,36-pipeline; 38,40,42,44,53,55,57,59-pipeline.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.It should be noted that, in accompanying drawing or specification description, similar or identical part is all used identical figure number.The implementation that does not illustrate in accompanying drawing or describe is form known to a person of ordinary skill in the art in affiliated technical field.In addition, although the demonstration of the parameter that comprises particular value can be provided herein, should be appreciated that, parameter is without definitely equaling corresponding value, but can in acceptable error margin or design constraints, be similar to corresponding value.
Compressed-air energy-storage system of the present invention, when electric power low ebb, renewable energy power generation redundancy, is pressed into caisson by gas compressor by air, and water in caisson is discharged and kept caisson constant voltage simultaneously, thus interior can the storing that is air by electric energy conversion; When peak of power consumption, electric power accident, renewable energy power generation are undesirable, caisson mesohigh air drives generator to generate electricity by decompressor after absorbing heat in heater, with pump handle water, inject caisson constant to maintain the pressure of gas storage chamber simultaneously, thereby provide the energy-storage system that a kind of efficiency is high, safe.
In first exemplary embodiment of the present invention, provide a kind of compressed-air energy-storage system.Please refer to Fig. 1, this compressed-air energy-storage system adopts two stage compression, inter-stage is cooling and double expansion, inter-stage heat, and comprising: motor 1, low pressure compressor 2, high-pressure compressor 6, high pressure expansion machine 18, low-pressure expansion machine 22, cooler (4,8), heater (16,20), valve (10,14,25,29), pipeline (3,5,7,9,11,13,15,17,19,21,24,26,27,30), caisson 12, generator 23, water pump 28.
The driving power of motor 1 is conventional power plant trough-electricity, nuclear power, wind-powered electricity generation, solar electrical energy generation, water power or tidal power generation one or more combination wherein.
The total propeller shaft couplings of motor 1 and the unit of calming the anger.Low pressure compressor 2 is connected with high-pressure compressor 6 through pipeline 3, cooler 4 and pipeline 5.High-pressure compressor 6 is connected with caisson 12 through pipeline 7, cooler 8, pipeline 9, valve 10 and pipeline 11.
Caisson 12 is connected with water source through pipeline 24, valve 25 and pipeline 26.One end of water pump 28 is connected to water source through pipeline 27, and the other end is connected with caisson 12 through valve 29, pipeline 30.
Caisson 12 is connected to high pressure expansion machine 18 through pipeline 13, valve 14, pipeline 15, heater 16, pipeline 17, and high pressure expansion machine 18 is connected to low-pressure expansion machine 22 through pipeline 19, heater 20, pipeline 21.The total propeller shaft couplings of generator 23 and expansion unit (high pressure expansion machine 18 and low-pressure expansion machine 22).
Below introduce thermal energy storage process and the exoergic process of the present embodiment compressed-air energy-storage system:
(1) under original state, in caisson, be full of high pressure water, when hydraulic pressure is stored with caisson, pressure is identical.Or have part high pressure water and part high-pressure air in caisson, and pressure during the storage that is caisson of both pressure;
(2) during energy storage, valve 10,25 is opened, valve 14,29 is closed, motor 1 utilizes trough-electricity to drive the unit of calming the anger, air is in low pressure compressor 2 compression increasing temperature and pressure, air after compression enters cooler 4 through pipeline 3 and carries out coolingly, and cooled air enters high-pressure compressor 6 through pipeline 5 and continues compression increasing temperature and pressure, and its outlet air enters caisson 12 storages through pipeline 7, cooler 8, pipeline 9, valve 10 and pipeline 11.The water of caisson 12 discharges to keep constant pressure in caisson 12 through pipeline 24, valve 25 and pipeline 26, and energy storage finishes, throttle down 10,25.
Air temperature in compression process can raise.And the higher air of temperature can make the wasted work of compression process motor increase, reduce energy storage efficiency.Therefore in thermal energy storage process, the Main Function of cooler 4,8 is to carry out cooling to the air after compression.
The present embodiment compressed-air energy-storage system can regulate energy storage capacity by controlling gas compressor flow and inter-stage chilling temperature.Specifically: gas compressor (2,6) is load and the controlled gas compressor of rotating speed.Cooler (4,8) is the controlled cooler of chilling temperature.Controlling gas compressor flow, is by regulating gas compressor load, start-stop part gas compressor or regulating rotating speed of gas compressor to realize.
The present embodiment compressed-air energy-storage system, when energy storage, is discharged the flow of water in caisson according to the flow control of gas compressor.Specifically: total volume V in caisson
totbe constant, equal the volume V of high-pressure air
gasvolume V with high pressure water
watersum, within a certain period of time, the volume of pressurized gas increases δ V
gas, the volume of high pressure water reduces δ V
water, in order to keep gas storage chamber constant voltage, δ V
gas=δ V
water, δ V
gasto be determined by the flow of gas compressor, δ V
watercan determine the flow of discharging water, be therefore to control by the flow of gas compressor the flow of getting rid of water.
(3) while releasing energy, water pump 28 starts, valve 14,29 is opened, valve 10,25 is closed, high-pressure air in caisson 12 enters heater 16 through pipeline 13, valve 14 and pipeline 15, high-pressure air after being heated by heater 16 enters high pressure expansion machine 18 expansion coolings through pipeline 17, and the outlet air of high pressure expansion machine 18 enters heater 20 through pipeline 19, enters low-pressure expansion machine 22 continuation expansions do work by the air after heater 20 heating through pipeline 21.The shaft work of low-pressure expansion machine and high pressure expansion machine output drives generator 23 generatings.Release and can finish, valve 14,29 is closed.
Air inlet temperature in expansion acting process is higher, and externally the shaft work of output is just larger.Therefore in expansion acting process, the Main Function of heater 16,20 is for to heat up to entering the air of decompressor.
By controlling decompressor flow and inter-stage heating-up temperature, regulate generating capacity.Specifically: decompressor (18,22) is the controlled decompressor of rotating speed.Heater (16,20) is the controlled heater of heating-up temperature.Controlling decompressor flow, is to realize by start-stop demi-inflation machine or adjusting decompressor rotating speed.
The present embodiment compressed-air energy-storage system, when releasing energy, injects the flow of caisson water according to the flow control water pump of decompressor.Specifically: total volume V in caisson
totbe constant, equal the volume V of high-pressure air
gasvolume V with high pressure water
watersum, within a certain period of time, the volume δ V that pressurized gas are got rid of
gas, the high pressure water volume δ V that water pump injects
water, in order to keep gas storage chamber constant voltage, δ V
water=δ V
gas, δ V
gasto be determined by the flow of decompressor, δ V
watercan determine that water pump injects the flow of discharging water, be therefore by the flow of decompressor, to be controlled the flow of water pump injected water.
Generally, when energy storage is different with exoergic process, carry out, during energy storage, valve 10,25 is opened simultaneously, and valve 14,29 is closed, and the aperture of valve 25 is by the unit flow control of calming the anger.While releasing energy, valve 10,25 is closed, and valve 14,29 is opened, and pump capacity is by the unit flow control of expanding, to keep the interior constant voltage of caisson 12.Valve 25 effects are to keep constant voltage in caisson in the energy storage stage, and water pump effect is to release and can the stage keep storage device constant voltage.Constant force value is determined by energy storage density, and is limited to the operating range of gas compressor, the pressure maximum that the operating range of decompressor and caisson can bear etc.
Known by above explanation, in the present embodiment, by water pump and valve regulated, can so that gas compressor and decompressor all under constant pressure, work, can improve the working efficiency of gas compressor and decompressor, thereby avoided gas compressor and decompressor to work, can improve working efficiency and the stability of energy-storage system under variable working condition
So far, first embodiment of the invention compressed-air energy-storage system is introduced complete.
In second exemplary embodiment of the present invention, also provide another kind of compressed-air energy-storage system.Please refer to Fig. 2, the agent structure of the present embodiment compressed-air energy-storage system is identical with embodiment 1, and difference is only on water discharge pipe line, to have increased in caisson a hydraulic generator 31.Caisson 12 is connected with hydraulic generator 31 through pipeline 24, valve 25, and hydraulic generator 31 is connected with water source through pipeline 26.By this hydraulic generator 31, can reclaim the energy of high pressure water.
Below introduce thermal energy storage process and the exoergic process of the present embodiment compressed-air energy-storage system:
(1) under original state, in caisson, be full of high pressure water, when hydraulic pressure is stored gas with caisson, pressure is identical.Or have part high pressure water and part high-pressure air in caisson, and pressure during the storage that is caisson of both pressure;
(2) during energy storage, open valve 10, 25, throttle down 14, 29, motor 1 utilizes trough-electricity to drive the unit of calming the anger, air is in low pressure compressor 2 compression increasing temperature and pressure, air after compression enters cooler 4 through pipeline 3, cooled air enters high-pressure compressor 6 through pipeline 5 and continues compression increasing temperature and pressure, its outlet air is through cooler 8, valve 10 and pipeline 7, 9, 11 enter caisson 12 storages, the water of caisson 12 is through pipeline 24 simultaneously, valve 25 enters the energy that high pressure water is reclaimed in hydraulic generator 26 actings, then through pipeline 26, discharge, energy storage finishes, throttle down 10, 25.
(3) while releasing energy, start water pump 28, open valve 14,29, throttle down 10,25, high-pressure air in caisson 12 enters heater 16 through pipeline 13,15 and valve 14, high-pressure air after heating enters high pressure expansion machine 18 expansion coolings through pipeline 17, and its outlet air enters heater 20 through pipeline 19, and the air after heating enters low-pressure expansion machine 22 continuation expansions through pipeline 21 and does work and drive generator 21 generatings.Release and can finish, valve 14,29 is closed.
Known by above explanation, in the present embodiment, by hydraulic turbine generator unit, can reclaim the energy of high pressure water, thereby can improve energy-storage system efficiency.
So far, second embodiment of the invention compressed-air energy-storage system is introduced complete.
In the 3rd exemplary embodiment of the present invention, also provide another kind of compressed-air energy-storage system.Please refer to Fig. 3, the airflow channel structure of the present embodiment compressed-air energy-storage system is identical with the first embodiment, and just caisson 12 is different from the flow channel structure between water source, only has a path between caisson 12 and water source.Caisson 12 is connected with valve 33 by pipeline 32, and valve 33 is connected with Reversible Pump-Turbine group 35 through pipeline 34, and Reversible Pump-Turbine group 35 is connected with water source through pipeline 36.
Below introduce thermal energy storage process and the exoergic process of the present embodiment compressed-air energy-storage system:
(1) under original state, in caisson, be full of high pressure water, when hydraulic pressure is stored gas with caisson, pressure is identical.Or have part high pressure water and part high-pressure air in caisson, and pressure during the storage that is caisson of both pressure.
(2) during energy storage, open valve 10, 33, throttle down 14, motor 1 utilizes trough-electricity to drive the unit of calming the anger, air is in low pressure compressor 2 compression increasing temperature and pressure, air after compression enters cooler 4 through pipeline 3, cooled air enters high-pressure compressor 6 through pipeline 5 and continues compression increasing temperature and pressure, its outlet air is through cooler 8, valve 10 and pipeline 7, 9, 11 enter caisson 12 storages, the water of caisson 12 is through pipeline 32 simultaneously, 34, valve 33 enters the energy that high pressure water is reclaimed in 35 actings of Reversible Pump-Turbine group, then through pipeline 36, discharge, energy storage finishes, throttle down 10, 33,
(3) while releasing energy, start Reversible Pump-Turbine group 35, open valve 33, water is injected to caisson 12, and throttle down 10, opens valve 14, high-pressure air in caisson 12 enters heater 16 through pipeline 13,15 and valve 14, high-pressure air after heating enters high pressure expansion machine 18 expansion coolings through pipeline 17, and its outlet air enters heater 20 through pipeline 19, and the air after heating enters low-pressure expansion machine 22 continuation expansions through pipeline 21 and does work and drive generator 23 generatings.Release and can finish, valve 14,33 is closed.
Known by above explanation, in the present embodiment, by Reversible Pump-Turbine group, can water pump and hydraulic generator unit two-way pipeline merge into a road, thereby can make system simpler.
So far, third embodiment of the invention compressed-air energy-storage system is introduced complete.
In the 4th exemplary embodiment of the present invention, also provide another kind of compressed-air energy-storage system.Please refer to Fig. 4, the agent structure of this compressed-air energy-storage system is identical with the first embodiment, but it adopt three grades of compressions, inter-stage is cooling and three grades of expansion, inter-stage heating replacement the first embodiment in the cooling and double expansion of two stage compression, inter-stage, inter-stage heat.The unit of calming the anger comprises: low pressure compressor 37, intermediate pressure compressor 41 and high-pressure compressor 45.Pipeline 38, cooler 39, pipeline 40 are set between low pressure compressor 37 and intermediate pressure compressor 41.Pipeline 42, cooler 43 and pipeline 44 are set between intermediate pressure compressor 41 and high-pressure compressor 45.Expansion unit comprises: high pressure expansion machine 52, middle-pressure expansion machine 56, low-pressure expansion machine 60.Pipeline 53, heater 54 and pipeline 55 are set between high pressure expansion machine 52 and middle-pressure expansion machine 56.Pipeline 57, heater 58 and pipeline 59 are set between middle-pressure expansion machine 56 and low-pressure expansion machine 60.
Below introduce thermal energy storage process and the exoergic process of the present embodiment compressed-air energy-storage system:
(1) under original state, in caisson, be full of high pressure water, when hydraulic pressure is stored gas with caisson, pressure is identical.Or have part high pressure water and part high-pressure air in caisson, and pressure during the storage that is caisson of both pressure;
(2) during energy storage, throttle down 14,29, open valve 10,25, air enters caisson 12 through low pressure compressor 37, cooler 39, intermediate pressure compressor 41, cooler 43, high-pressure compressor 45, cooler 8, valve 10 and pipeline 38,40,42,44,7,9,11 and stores, in caisson 12, water is discharged through pipeline 24,26 and valve 25, energy storage finishes, throttle down 10,25;
(3) while releasing energy, throttle down 10, 25, open valve 14, 29, high-pressure air is through valve 14, heater 16 and pipeline 13, 15, 17 enter high pressure expansion machine 52 expansion actings, then by pipeline 53, enter heater 54 heating, by pipeline 55, enter middle-pressure expansion machine 56 actings again, then through pipeline 57, enter heater 58 heating, air after heating enters low-pressure expansion machine 60 actings through pipeline 59, water is through pipeline 27 simultaneously, water pump 28, valve 29 and pipeline 30 enter caisson 12 and fill up the volume that high-pressure air is discharged, to keep constant voltage in caisson 12.
Known by above explanation, in the present embodiment, by three grades of compressions, inter-stage is cooling and three grades of expansions, can improve the pressure of pressurized gas, thereby can increase the energy density of energy-storage system.
So far, fourth embodiment of the invention compressed-air energy-storage system is introduced complete.
By above-mentioned four embodiments' explanation, those skilled in the art should have clearly understanding to compressed-air energy-storage system of the present invention.
In the present invention, water source can be sea, lake, reservoir, river, river or artificial pond.Caisson, gas compressor, decompressor, cooler, heater, valve etc. are general parts.Caisson can be airtight cave or artificial pressure container.Gas compressor or decompressor are one or more the combination wherein of piston type, axial flow, diagonal flow type, centrifugal, screw type.The gas compressor of cascade or decompressor are coaxial series connection form or split axle parallel form.In split axle parallel form, split axle and the main driving axle of each gas compressor or decompressor are dynamically connected.Water pump is impeller pump or positive displacement pump.Impeller pump is one or more the combination wherein of axial flow, mixed-flow or centrifugal pump.Positive displacement pump is one or more the combination wherein of gear pump, screw pump, Roots pump or sliding vane pump.Cooler or heater are one or more combination in following group: bushing type, shell of pipe type, jacketed type, heat accumulating type, hybrid and immerse coil pipe type.And in the unit of calming the anger in the number of gas compressor, expansion unit the number of decompressor can be 1 or many.
Above-described specific embodiment; object of the present invention, technological scheme and beneficial effect are further described; institute is understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (18)
1. a compressed-air energy-storage system, is characterized in that, comprising: energy storage component, caisson, water pump and release can assembly, wherein:
Described caisson is the seal container of prestoring water;
Described water pump, is arranged at water source to the pipeline of caisson;
Described energy storage component comprises: motor; The unit of calming the anger, comprise at least 1 gas compressor, its rotating shaft is connected with the rotating shaft of described motor, its air outlet is connected with the suction port of described caisson by valve, under the driving of described motor, this unit of calming the anger is pressed into described caisson by air and stores, and the compressed Bas Discharged of water in described caisson is to water source;
Described releasing can comprise by assembly: generator; Expansion unit, comprise at least 1 decompressor, its rotating shaft is connected with the rotating shaft of described generator, its suction port is connected with the air outlet of described caisson by valve, the pressurized air of caisson does work by decompressor and drives generator to generate electricity, water pump injects water in caisson simultaneously, fills up the volume that pressurized air is discharged.
2. compressed-air energy-storage system according to claim 1, is characterized in that, also comprises:
Cooler, calms the anger described in being arranged between unit and caisson, this cooler by the pressurized air of the unit output of calming the anger carry out cooling after, sent into caisson;
Heater, is arranged between described caisson and expansion unit, and this heater is sent into expansion unit after the air of caisson output is heated.
3. compressed-air energy-storage system according to claim 1, is characterized in that, described in the unit of calming the anger comprise at least 2 gas compressors that connect with coaxial series connection form or split axle parallel form.
4. compressed-air energy-storage system according to claim 3, is characterized in that, described gas compressor is load and the controlled gas compressor of rotating speed.
5. compressed-air energy-storage system according to claim 3, is characterized in that, between 2 adjacent gas compressors, the controlled cooler of chilling temperature is set.
6. compressed-air energy-storage system as claimed in claim 3, is characterized in that, described in the number of gas compressor in unit of calming the anger be 2 or 3.
7. compressed-air energy-storage system according to claim 1, is characterized in that, described expansion unit comprises at least 2 decompressors that connect with coaxial series connection form or split axle parallel form.
8. compressed-air energy-storage system according to claim 7, is characterized in that, described decompressor is the controlled decompressor of rotating speed.
9. compressed-air energy-storage system according to claim 7, is characterized in that, between 2 adjacent decompressors, the controlled heater of heating-up temperature is set.
10. compressed-air energy-storage system as claimed in claim 7, is characterized in that, in described expansion unit, the number of decompressor is 2 or 3.
11. compressed-air energy-storage systems according to claim 1, is characterized in that, also comprise:
Hydraulic generator unit, is arranged on the pipeline between caisson and water source.
12. compressed-air energy-storage systems according to claim 1, is characterized in that, the pipeline between described caisson and water source is:
, a two-way pipeline, or
Article two, unidirectional pipeline, be respectively caisson to the unidirectional pipeline at water source and water source the unidirectional pipeline to caisson.
13. according to the compressed-air energy-storage system described in claim 2 or 9, it is characterized in that, the thermal source of described heater is industrial waste heat, waste heat, atmosphere environment, solar heat or heat-stored device.
14. according to the compressed-air energy-storage system described in claim 2,5 or 9, it is characterized in that, described cooler or heater are one or more combination in following group: bushing type, shell of pipe type, jacketed type, heat accumulating type, hybrid and immerse coil pipe type.
15. compressed-air energy-storage systems as described in any one in claim 1 to 12, is characterized in that, described caisson is: airtight cave or artificial pressure container.
16. compressed-air energy-storage systems as described in any one in claim 1 to 12, is characterized in that, described gas compressor or decompressor are with one or more combination in Types Below: piston type, axial flow, diagonal flow type, centrifugal and screw type.
17. compressed-air energy-storage systems as described in any one in claim 1 to 12, is characterized in that, described water source is: sea, lake, reservoir, river, river or artificial pond.
18. constant voltage compressed-air energy-storage systems as described in any one in claim 1 to 12, is characterized in that, described water pump is: impeller pump or positive displacement pump;
Described impeller pump is one or more the combination wherein of axial flow, mixed-flow or centrifugal pump;
Described positive displacement pump is one or more the combination wherein of gear pump, screw pump, Roots pump or sliding vane pump.
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| CN107489467A (en) * | 2017-08-03 | 2017-12-19 | 中国科学院理化技术研究所 | Compressed air water pumping energy storage system |
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| CN108953121A (en) * | 2018-06-29 | 2018-12-07 | 山东大学 | From back pressure constant pressure compressed-air energy-storage system and method |
| CN108999770A (en) * | 2018-07-06 | 2018-12-14 | 西安交通大学 | A kind of nonadiabatic isobaric twin containers compressed-air energy-storage system in sea and method |
| CN108930627A (en) * | 2018-07-06 | 2018-12-04 | 西安交通大学 | A kind of level pressure is drawn water compressed gas energy-storage system and energy storage method |
| CN108916105A (en) * | 2018-07-09 | 2018-11-30 | 中国矿业大学 | Constant-pressure compressed air energy storage device |
| CN110259625A (en) * | 2019-05-31 | 2019-09-20 | 西安交通大学 | A kind of draw water compressed air energy-storage system and method using underground reservoir |
| WO2021048829A1 (en) | 2019-09-14 | 2021-03-18 | Cheesecake Energy Ltd | Constant pressure gas storage in containments with mitigation for gas dissolution problems |
| CN113483352A (en) * | 2021-07-08 | 2021-10-08 | 山东劳动职业技术学院（山东劳动技师学院） | Air compression combustion system with variable compression ratio |
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| CN114151313A (en) * | 2021-12-02 | 2022-03-08 | 西安热工研究院有限公司 | Coupling compressed air energy storage system of gas generator set and operation method thereof |
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