CN104005802B - Compressed-air energy-storage system - Google Patents
Compressed-air energy-storage system Download PDFInfo
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- CN104005802B CN104005802B CN201310061963.8A CN201310061963A CN104005802B CN 104005802 B CN104005802 B CN 104005802B CN 201310061963 A CN201310061963 A CN 201310061963A CN 104005802 B CN104005802 B CN 104005802B
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- 238000004146 energy storage Methods 0.000 title claims abstract description 99
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 91
- 230000001914 calming effect Effects 0.000 claims abstract description 16
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims 9
- 239000002918 waste heat Substances 0.000 claims 1
- 238000000034 method Methods 0.000 description 18
- 238000007906 compression Methods 0.000 description 17
- 230000008569 process Effects 0.000 description 16
- 230000006835 compression Effects 0.000 description 13
- 238000010438 heat treatment Methods 0.000 description 8
- 230000005611 electricity Effects 0.000 description 6
- 230000002441 reversible effect Effects 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 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
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Abstract
The invention provides 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: caisson is the seal container of prestoring water.Water pump, is arranged at water source on the pipeline of caisson.Energy storage component comprises: motor; Calm the anger unit, comprise at least 1 gas compressor, its rotating shaft is connected with the rotating shaft of motor, and its air outlet is connected with the suction port of caisson by valve.Release and can comprise by assembly: generator; Expansion unit, comprises at least 1 decompressor, and its rotating shaft is connected with the rotating shaft of generator, and its suction port is connected with the air outlet of caisson by valve.In compressed-air energy-storage system of the present invention, expansion unit and unit of calming the anger are all work at constant pressure, and energy-storage system efficiency is high, Security good.
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 machine set in China's electric power network is on the increase, and the own power regulating power of electric power system is restricted, and the peak-to-valley ratio of system loading constantly increases, and in order to ensure power grid security, run economically, must build electric energy storing system.Particularly wind-powered electricity generation extensive development, due to its intermittent feature, makes the safety of electrical network be on the hazard, and in order to the renewable energy sources such as efficiency utilization wind energy more, must possess electric energy storing system and match.
At present, extensive electric energy storing system technology is drawn water energy storage and compressed-air energy storage, the energy storage technology that draws water is subject to landform restriction, and pressure is change 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 loss.
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, a kind of compressed-air energy-storage system is provided.This compressed-air energy-storage system comprises: energy storage component, caisson, water pump and release can assembly, wherein: caisson is the seal container of prestoring water; Water pump, is arranged at water source on the pipeline of caisson; Energy storage component comprises: motor; To calm the anger unit, 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, air is pressed into caisson and stores by this unit of calming the anger, and the water in caisson is expelled to water source by pressurized air; 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 is by decompressor acting also drive electrical generators generating, water injects in caisson by water pump simultaneously, fills up the volume that pressurized air is discharged.
(3) beneficial effect
As can be seen from technique scheme, compressed-air energy-storage system of the present invention has following beneficial effect:
(1) the water rate control caisson inner pressure constant in caisson is utilized, energy-storage system is calmed the anger in thermal energy storage process and exoergic process under unit and expansion unit be operated in constant voltage environment always, thus solve the problem of pressure change in caisson in the energy storage of conventional compression air, because expansion unit and unit of calming the anger are all work at constant pressure, so energy-storage system efficiency is high, Security good;
(2) utilize cascade EDFA device to cool compressor air inlet machine, the air inlet of inter-stage heating devices heat decompressor, reduce compression process wasted work, increase inflation process and go out merit, improve system effectiveness;
(3) advantages such as this compressed-air energy-storage system also has the energy storage cycle unrestricted, is applicable to various types of power supply, 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 clearly understand, 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 describe, similar or identical part all uses identical figure number.The implementation not illustrating in accompanying drawing or describe is form known to a person of ordinary skill in the art in art.In addition, although herein can providing package containing the demonstration of the parameter of particular value, should be appreciated that, parameter without the need to definitely equaling corresponding value, but can be similar to corresponding value in acceptable error margin or design constraints.
Air, when electric power low ebb, renewable energy power generation redundancy, is pressed into caisson by gas compressor by compressed-air energy-storage system of the present invention, is discharged by water in caisson simultaneously and keeps caisson constant voltage, thus be can store in air by electric energy conversion; When peak of power consumption, electric power accident, renewable energy power generation are undesirable, generated electricity by decompressor drive electrical generators after caisson mesohigh air absorbs heat in the heater, inject caisson with pump handle water constant with the pressure maintaining gas storage chamber simultaneously, thus it is high to provide a kind of efficiency, the energy-storage system that Security is high.
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, cascade EDFA and double expansion, inter-stage heating, comprise: 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 unit of calming the anger.Low pressure compressor 2 is connected with high-pressure compressor 6 with pipeline 5 through pipeline 3, cooler 4.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 with pipeline 26 through pipeline 24, valve 25.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) in an initial condition, be full of high pressure water in caisson, when hydraulic pressure stores with caisson, pressure is identical.Or have partial high pressure water and partial high pressure air in caisson, and pressure when both pressure are the storage of caisson;
(2) during energy storage, valve 10,25 is opened, valve 14,29 is closed, motor 1 utilizes trough-electricity to drive unit of calming the anger, air compresses increasing temperature and pressure at low pressure compressor 2, air after compression enters cooler 4 through pipeline 3 and cools, and cooled air enters high-pressure compressor 6 through pipeline 5 and continues compression and increasing temperature and pressure, and its outlet air enters caisson 12 through pipeline 7, cooler 8, pipeline 9, valve 10 and pipeline 11 and stores.The water of caisson 12 discharges to keep constant pressure in caisson 12 through pipeline 24, valve 25 and pipeline 26, and energy storage terminates, 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 be to compression after air cool.
The present embodiment compressed-air energy-storage system can regulate energy storage capacity by control gas compressor flow and cascade EDFA 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, discharges the flow of water in caisson according to the flow control of gas compressor.Specifically: volume V total in caisson
totbe constant, equal the volume V of high-pressure air
gaswith the volume V of 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, then δ V
gas=δ V
water, δ V
gasdetermined by the flow of gas compressor, δ V
watercan determine the flow of discharging water, be therefore the flow being controlled to get rid of water by the flow of gas compressor.
(3) when 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 through pipeline 17 and to expand cooling, and the outlet air of high pressure expansion machine 18 enters heater 20 through pipeline 19, and the air after being heated by heater 20 enters low-pressure expansion machine 22 through pipeline 21 and continues expansion work.The shaft work drive electrical generators 23 that low-pressure expansion machine and high pressure expansion machine export generates electricity.Release and can terminate, valve 14,29 is closed.
Air inlet temperature in expansion work process is higher, and the shaft work externally exported is larger.Therefore, in expansion work process, the Main Function of heater 16,20 is heat up to the air entering decompressor.
By controlling decompressor flow and inter-stage heating-up temperature adjustment 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 realized by start-stop demi-inflation machine or adjustment 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: volume V total in caisson
totbe constant, equal the volume V of high-pressure air
gaswith the volume V of 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, then δ V
water=δ V
gas, δ V
gasdetermined by the flow of decompressor, δ V
watercan determine that water pump injects the flow of discharging water, be therefore to control the flow that water pump injects water by the flow of decompressor.
Generally, carry out when energy storage is different with exoergic process, during energy storage, valve 10,25 is opened simultaneously, and valve 14,29 is closed, and the aperture of valve 25 is by unit flow control of calming the anger.Release can time, valve 10,25 close, valve 14,29 is opened, pump capacity by unit flow control of expanding, to keep constant voltage in caisson 12.Valve 25 effect keeps constant voltage in caisson in the energy storage stage, and water pump effect is releasing and the stage can keep storage device constant voltage.Constant force value is determined by energy storage density, and is limited to the pressure maximum etc. that the operating range of gas compressor, the operating range of decompressor and caisson can bear.
Known by illustrating above, in the present embodiment, by water pump and valve regulated, gas compressor and decompressor can be made to work all under constant pressure, the working efficiency of gas compressor and decompressor can be improved, avoid gas compressor and decompressor works thus 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, additionally 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 water discharge pipe line to add a hydraulic generator 31 in caisson.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.The energy of high pressure water can be reclaimed by this hydraulic generator 31.
Below introduce thermal energy storage process and the exoergic process of the present embodiment compressed-air energy-storage system:
(1) in an initial condition, be full of high pressure water in caisson, when hydraulic pressure and caisson store gas, pressure is identical.Or have partial high pressure water and partial high pressure air in caisson, and pressure when both pressure are the storage of caisson;
(2) during energy storage, open valve 10, 25, throttle down 14, 29, motor 1 utilizes trough-electricity to drive unit of calming the anger, air compresses increasing temperature and pressure at low pressure compressor 2, air after compression enters cooler 4 through pipeline 3, cooled air enters high-pressure compressor 6 through pipeline 5 and continues compression and increasing temperature and pressure, its outlet air is through cooler 8, valve 10 and pipeline 7, 9, 11 enter caisson 12 stores, 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 acting, then discharge through pipeline 26, energy storage terminates, throttle down 10, 25.
(3) when 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 through pipeline 17 and to expand cooling, and its outlet air enters heater 20 through pipeline 19, and the air after heating enters low-pressure expansion machine 22 through pipeline 21 and continues expansion work and drive electrical generators 21 generates electricity.Release and can terminate, valve 14,29 is closed.
Known by illustrating above, in the present embodiment, by hydraulic turbine generator unit, the energy of high pressure water can be reclaimed, thus energy-storage system efficiency can be improved.
So far, second embodiment of the invention compressed-air energy-storage system is introduced complete.
In the 3rd exemplary embodiment of the present invention, additionally 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) in an initial condition, be full of high pressure water in caisson, when hydraulic pressure and caisson store gas, pressure is identical.Or have partial high pressure water and partial high pressure air in caisson, and pressure when both pressure are the storage of caisson.
(2) during energy storage, open valve 10, 33, throttle down 14, motor 1 utilizes trough-electricity to drive unit of calming the anger, air compresses increasing temperature and pressure at low pressure compressor 2, air after compression enters cooler 4 through pipeline 3, cooled air enters high-pressure compressor 6 through pipeline 5 and continues compression and increasing temperature and pressure, its outlet air is through cooler 8, valve 10 and pipeline 7, 9, 11 enter caisson 12 stores, the water of caisson 12 is through pipeline 32 simultaneously, 34, valve 33 enters the energy that high pressure water is reclaimed in Reversible Pump-Turbine group 35 acting, then discharge through pipeline 36, energy storage terminates, throttle down 10, 33,
(3) when releasing energy, start Reversible Pump-Turbine group 35, open valve 33, water is injected caisson 12, throttle down 10, open 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 through pipeline 17 and to expand cooling, and its outlet air enters heater 20 through pipeline 19, and the air after heating enters low-pressure expansion machine 22 through pipeline 21 and continues expansion work and drive electrical generators 23 generates electricity.Release and can terminate, valve 14,33 is closed.
Known by illustrating above, in the present embodiment, by Reversible Pump-Turbine group, water pump and turbine-generator units two-way pipeline can merge into a road, thus system can be made 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, additionally 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 its adopt two stage compression, cascade EDFA and double expansion in three stage compression, cascade EDFA and three grades of expansion, inter-stage heating replacement first embodiment, inter-stage heats.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) in an initial condition, be full of high pressure water in caisson, when hydraulic pressure and caisson store gas, pressure is identical.Or have partial high pressure water and partial high pressure air in caisson, and pressure when both pressure are the storage of caisson;
(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 terminates, throttle down 10,25;
(3) when 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 work, then enter heater 54 by pipeline 53 to heat, enter middle-pressure expansion machine 56 by pipeline 55 again to do work, then enter heater 58 through pipeline 57 to heat, air after heating enters low-pressure expansion machine 60 through pipeline 59 and does work, water is through pipeline 27 simultaneously, water pump 28, valve 29 and pipeline 30 enter the volume that high-pressure air discharge filled up by caisson 12, to keep constant voltage in caisson 12.
Known by illustrating above, in the present embodiment, by three stage compression, cascade EDFA and three grades of expansions, the pressure of pressurized gas can be improved, thus the energy density of energy-storage system can be increased.
So far, fourth embodiment of the invention compressed-air energy-storage system is introduced complete.
By the explanation of above-mentioned four embodiments, those skilled in the art should have compressed-air energy-storage system of the present invention and have clearly been familiar with.
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 piston type, axial flow, diagonal flow type, centrifugal, screw type one or more combination wherein.The gas compressor of cascade or decompressor are coaxial cascade 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 unit of calming the anger in the number of gas compressor, expansion unit the number of decompressor can be 1 or multiple stage.
Above-described specific embodiment; object of the present invention, technological scheme and beneficial effect are further described; be 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 amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (21)
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, and it is connected with water source with the first valve (25) through pipeline;
Described water pump, be arranged at water source on the pipeline of caisson, its one end is connected to water source through pipeline, and the other end is connected with described caisson with pipeline through the second valve (29);
Described energy storage component comprises: motor; To calm the anger unit, comprise at least 1 gas compressor, its rotating shaft is connected with the rotating shaft of described motor, its air outlet is connected by the suction port of valve with described caisson, under the driving of described motor, air is pressed into described caisson and stores by this unit of calming the anger, and the water in described caisson is expelled to water source by pressurized air;
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 by the air outlet of valve with described caisson, the pressurized air of caisson is by decompressor acting also drive electrical generators generating, water injects in caisson by water pump simultaneously, fills up the volume that pressurized air is discharged;
Wherein, during energy storage, the first valve (25) is opened, and the second valve (29) is closed, the aperture of the first valve (25) by unit flow control of calming the anger, to keep constant voltage in caisson in the energy storage stage; Release can time, the first valve (25) is closed, and the second valve (29) is opened, pump capacity by unit flow control of expanding, to release and the stage can keep caisson constant voltage.
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, and this cooler is sent into caisson after being cooled by the pressurized air that unit of calming the anger exports;
Heater, is arranged between described caisson and expansion unit, after the air that caisson exports heats by this heater, sends into expansion unit.
3. compressed-air energy-storage system according to claim 1, is characterized in that, described in unit of calming the anger comprise at least 2 gas compressors connected with coaxial cascade or split axle parallel form.
4. compressed-air energy-storage system according to claim 3, is characterized in that, described gas compressor is the controlled gas compressor of load and rotating speed.
5. compressed-air energy-storage system according to claim 3, is characterized in that, described in unit of calming the anger comprise at least 2 gas compressors connected with coaxial cascade, 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 connected with coaxial cascade 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, described expansion unit comprises at least 2 decompressors connected with coaxial cascade, arranges the controlled heater of heating-up temperature between 2 adjacent decompressors.
10. compressed-air energy-storage system as claimed in claim 7, it 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:
Turbine-generator units, is arranged on the pipeline between caisson and water source.
12. compressed-air energy-storage systems according to claim 2 or 9, it is characterized in that, the thermal source of described heater is waste heat or heat-stored device.
13. compressed-air energy-storage systems according to claim 2,5 or 9, it is characterized in that, cooler or heater are one or more combination in following group: double pipe heat exchanger, shell-and-tube heat exchanger, jacketed type exchanger, heat regenerator, direct contact heat exchanger and immerged coil heat exchanger.
14. compressed-air energy-storage systems according to any one of claim 1 to 11, it is characterized in that, described caisson is: airtight cave.
15. compressed-air energy-storage systems according to any one of claim 1 to 11, it is characterized in that, described caisson is: artificial pressure container.
16. compressed-air energy-storage systems according to any one of claim 1 to 11, it is characterized in that, described gas compressor is with one or more combination in Types Below: piston compressor, axial-flow compressor, diagonal flow type gas compressor, centrifugal-flow compressor and rotary screw compressor.
17. compressed-air energy-storage systems according to any one of claim 1 to 11, it is characterized in that, described decompressor is with one or more combination in Types Below: piston expansion engine, axial flow decompressor, diagonal flow type decompressor, centrifugal decompressor and screw type expansion machine.
18. compressed-air energy-storage systems according to any one of claim 1 to 11, it is characterized in that, described water source is: sea, lake, reservoir, river or river.
19. compressed-air energy-storage systems according to any one of claim 1 to 11, it is characterized in that, described water source is: artificial pond.
20. compressed-air energy-storage systems according to any one of claim 1 to 11, it is characterized in that, described water pump is: impeller pump;
Described impeller pump is one or more the combination wherein of axial-flow pump, mixed-flow pump or centrifugal pump.
21. compressed-air energy-storage systems according to any one of claim 1 to 11, it is characterized in that, described water pump is: positive displacement 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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| CN201310061963.8A CN104005802B (en) | 2013-02-27 | 2013-02-27 | Compressed-air energy-storage system |
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