CN203584748U - Compressed air energy storage device - Google Patents
Compressed air energy storage device Download PDFInfo
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- CN203584748U CN203584748U CN201320788470.XU CN201320788470U CN203584748U CN 203584748 U CN203584748 U CN 203584748U CN 201320788470 U CN201320788470 U CN 201320788470U CN 203584748 U CN203584748 U CN 203584748U
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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
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
Abstract
The utility model discloses a novel compressed air energy storage device, and particularly relates to a compressed air energy storage device suitable for variable working condition operation. The compressed air energy storage device divides a variable working condition input power range of input electricity energy into a plurality of grades, and the power grades correspond to pressure grades of a compressed air energy storage system. When the input electricity energy is larger in power change, variable working condition operation is realized by changing the compressed air pressure grades of the compressed air energy storage system, and electricity energy is stored; when the input electricity energy is smaller in power change, the pressure grades of compressed air are kept unchanged, variable working condition operation is realized by adjusting flow rate of the compressed air, and electricity energy is stored. Compressed air of different pressures is respectively stored in a constant pressure storing manner. After the compressed air energy storage device is adopted for compressed air energy storage, main equipment of the system are enabled to be operated in a range of rated working condition all the time under the condition that the electricity energy input power substantially and frequently changes, so that the energy storage efficiency of the energy storage system is greatly improved.
Description
Technical field
The utility model relates to a kind of compression air energy-storing apparatus that uses, relate in particular to a kind of by the compressed-air actuated pressure of Comprehensive Control and flow, adapt to input the off design performance of electric energy, realize electrical energy storage device, be specially adapted to the input power situation of frequent variations on a large scale, such as wind-power electricity generation and solar electrical energy generation etc.
Background technique
Compressed air energy storage technology is a kind of electric power energy storage technology, and the principle of traditional compressed air energy storage technology is: in thermal energy storage process, electric energy drives air compressor pressurized air, is compressed-air actuated interior energy, and is stored in gas storage chamber electric energy conversion; In exoergic process, pressurized air is emitted in gas storage chamber, by air expander, expands, and air expander rotates and drive generator generating, thereby to external world's output electric energy.
Compressed air energy storage technology can solve the problem existing in current wind-power electricity generation.In recent years, wind-power electricity generation has obtained developing rapidly, but wind power output power changes during along with wind direction and intensity, and wave range is large, changes frequently, while causing its input electrical network, electrical network is produced to great impact.In order to protect the safe and reliable of large electrical network, limit wind-power electricity generation in a lot of places, has even occurred that wind-powered electricity generation does not allow the phenomenon of online, has hindered the development of wind-powered electricity generation.The wind-powered electricity generation that compressed air energy storage technology can storage power constantly changes, then power input electrical network to specify by it, thus solved the difficult problem that wind-powered electricity generation impacts electrical network.
Although traditional compressed-air energy storage can address the above problem, system effectiveness is still lower, mainly comes from two reasons.
First, when the power of thermal energy storage process input electric energy is significantly during frequent variations, air compressor is worked always under variable working condition condition, and away from nominal working conditions, device efficiency is low.When especially situation is serious, probably there is equipment cisco unity malfunction, the serious consequence of even damaging.
Secondly, compressed-air energy-storage system, often to the gas storage chamber storage air of a constant volume, causes its back pressure of air compressor in thermal energy storage process constantly to rise.This makes the air compressor working state in partial load all the time, can not be in stable operation under declared working condition, and cause the efficiency of equipment greatly to reduce.
Summary of the invention
In view of this, the utility model proposes a kind of Novel compressed air energy storage device of applicable variable working condition.Compared with traditional compressed-air energy storage method, each capital equipment that device of the present utility model can be realized in energy-storage system is worked in the course of the work all the time near declared working condition, thereby has greatly improved the energy storage efficiency of energy-storage system.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of compression air energy-storing apparatus, comprise air compressor unit and some level pressure memory devices, it is characterized in that, described air compressor unit comprises some air compressors, each air compressor is connected in series by pipeline according to design pressure order from low to high, the import of First air compressor communicates with atmosphere, and the import of every air compressor is thereafter communicated with the outlet of an air compressor above by main connecting tube; On connecting tube between adjacent two air compressors, be also provided with branch line, branch line is connected with the suction port of the level pressure gas storage equipment of corresponding pressure; The outlet of last air compressor is directly connected with the level pressure gas storage equipment of a corresponding pressure by pipeline.
Preferably, on the main connecting tube between adjacent two air compressors, be equipped with control valve, and described control valve is arranged on the main connecting tube in downstream of corresponding branch line tie point; On the pipeline being connected with each level pressure gas storage equipment, be also provided with control valve.
Preferably, every air compressor drives by motor, and each motor is all furnished with frequency variator.
Preferably, the rated flow of all air compressors is consistent.
Preferably, the corresponding minimum electric energy input power grade of rated power of First air compressor, the corresponding second electric energy input power grade of rated power sum of front two air compressors ... by that analogy, the corresponding maximum power input power of all air compressor rated power sums grade; The inlet pressure of First air compressor design is atmospheric pressure, the inlet pressure of every air compressor design is thereafter the outlet pressure of an air compressor above, the outlet pressure of First air compressor is the first pressure rating, the outlet pressure of second air compressor is the second pressure rating ... by that analogy, the outlet pressure of last air compressor is maximum pressure level; According to different electric energy input power grades, start the air compressor of corresponding number of units, air, by after these air compressors, can obtain the pressurized air of the pressure rating of corresponding input electric energy power level, and the pressurized air obtaining is introduced the level pressure gas storage equipment of corresponding pressure grade.
Preferably, when the electric energy power of input changes greatly, when the inter-stages such as different capacity change, by the pressure rating that changes air compressor unit, carry out storage of electrical energy.
Preferably, less when the electric energy power variation of input, while changing in same power level, keep the pressure rating of air compressor unit constant, by adjusting compressed-air actuated flow, carry out storage of electrical energy.
Preferably, described air compressor is a kind of or its combination in piston compressor, Axial Flow Compressor, centrifugal compressor or screw compressor.
Preferably, described level pressure gas storage equipment is level pressure gas storage holder, or employing can guarantee the air liquefying apparatus that back pressure is stable.
The beneficial effects of the utility model are: 1. can store the significantly electric energy of frequent variations of input power, be particularly suitable for the storage of wind-power electricity generation and solar electrical energy generation; 2. each capital equipment of device moves all the time near declared working condition, and the energy storage efficiency of device improves greatly.
Accompanying drawing explanation
Fig. 1 is the structural representation of compression air energy-storing apparatus of the present utility model.
1. main air compressors in figure, 2. one-level frequency variator, 3. one-level level pressure caisson, 4. double stage compressor, 5. secondary frequency variator, 6. secondary level pressure caisson, 7. three-stage air compressor, 8. three grades of frequency variators, 9. three grades of level pressure caissons, 10-14. valve.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearer, referring to the accompanying drawing embodiment that develops simultaneously, the utility model is further described.It should be noted that, the following stated is only preferred embodiment of the present utility model, does not therefore limit protection domain of the present utility model.
This embodiment is a medium scale compression air energy-storing apparatus, and this device can be realized each capital equipment and near declared working condition, work all the time in energy storage power range.The input power range of this device is 42.5-297.5kW, is divided into three power levels.Wherein, the first input power grade is 85kW, and power range is between 42.5-127.5kW, and corresponding compressed-air actuated pressure is 0.85MPa, i.e. the first pressure rating; The second input power grade is 170kW, and power range is between 127.5-212.5kW, and corresponding compressed-air actuated pressure is 7MPa, i.e. the second pressure rating; The 3rd input power grade is 255kW, and power range is between 212.5-297.5kW, and corresponding compressed-air actuated pressure is 32MPa, i.e. the 3rd pressure rating.Corresponding three grades of input powers, device is provided with three air compressors, being respectively main air compressor 1, double stage compressor 4, three-stage air compressor 7, and three level pressure gas storage equipment, is respectively one-level level pressure caisson 3, secondary level pressure caisson 6, three grades of level pressure caissons 9. Air compressor 1,4,7 comprises respectively one-level frequency variator 2, secondary frequency variator 5, three grades of frequency variators 8.Three air compressors 1,4,7 are connected successively according to the ascending order of design pressure, and serial pipe is provided with lateral, and lateral is connected with the suction port of the level pressure gas storage equipment 3,6,9 of corresponding pipeline pressure.Pipeline is provided with valve 10-14, by the compressed-air actuated flow direction of valve control.
In air compressor unit, the rated input power of main air compressor 1 is 85kW, and air demand is 850Nm
3/ h, suction pressure is normal pressure, exhaust pressure is 0.85MPa.Main air compressor 1 is piston compressor, is divided into two-stage and compresses.The rated input power of double stage compressor 4 is 85kW, and air demand is 850Nm
3/ h, suction pressure is 0.85MPa, exhaust pressure is 7MPa.Double stage compressor 4 is piston compressor, is divided into two-stage and compresses.The rated input power of three-stage air compressor 7 is 85kW, and air demand is 850Nm
3/ h, suction pressure is 7MPa, exhaust pressure is 32MPa.Three-stage air compressor 7 is piston compressor, is divided into two-stage and compresses.
In level pressure gas storage equipment, one-level level pressure gas storage equipment 3 is used constant voltage storage tank to store, and storage pressure is 0.85MPa, and maximum gas storage volume is 2000m
3; Secondary level pressure gas storage equipment 6 is constant voltage storage tank, and storage pressure is 7MPa, and maximum gas storage volume is 200m
3; Three grades of level pressure gas storage equipment 9 are for being constant voltage storage tank, and storage pressure is 32MPa, and maximum gas storage volume is 40m
3.
According to compressed-air energy storage method of the present utility model, the specific works process of this compression air energy-storing apparatus is as follows:
In the power range that is 42.5-127.5kW in extraneous electric energy input power, start main air compressor 1, throttle down 10, open valve 11, after air compresses by air one stage compressor 1, pressure is increased to 0.85MPa, is introduced into one-level level pressure gas storage equipment 3 and stores.When input power changes in this power range, compressed air outlet pressure stability, at 0.85MPa, regulates the flow of air compressor 1 to adapt to the variation of power by one-level frequency variator 2.To excursion that should power, compressed-air actuated air demand is at 425-1275Nm
3in the scope of/h, change.In the power range that is 127.5-212.5kW in extraneous electric energy input power, start main air compressor 1,4, throttle down 11,12,14, open valve 10,13, air is successively by after main air compressor 1, double stage compressor 4 compressions, pressure is increased to 7MPa, is introduced into secondary level pressure gas storage equipment 6.When input power changes in this power range, compressed air outlet pressure stability, at 7MPa, regulates the flow of main air compressor 1, double stage compressor 4 to adapt to the variation of power by one-level frequency variator 2, secondary frequency variator 5.To excursion that should power level, compressed-air actuated air demand is at 637.5-1062.5Nm
3in the scope of/h, change.In the power range that is 212.5-297.5kW in extraneous electric energy input power, start main air compressor 1, double stage compressor 4, three-stage air compressor 7, throttle down 11,13, open valve 10,12,14, air by after main air compressor 1, double stage compressor 4, three-stage air compressor 7 compressions, is introduced into three grades of level pressure gas storage equipment 9 successively.When extraneous electric energy input power changes in this power range, compressed air outlet pressure remains on 32MPa, by one-level frequency variator 2, secondary frequency variator 5, three grades of frequency variators 8, regulates the flow of main air compressor 1, double stage compressor 4, three-stage air compressor 7 to adapt to the variation of power.To excursion that should power level, compressed-air actuated air demand is at 705.5-991.7Nm
3in the scope of/h, change.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., within all should being included in scope of the present utility model.
Claims (9)
1. a compression air energy-storing apparatus, comprise air compressor unit and some level pressure memory devices, it is characterized in that, described air compressor unit comprises some air compressors, each air compressor is connected in series by pipeline according to design pressure order from low to high, the import of First air compressor communicates with atmosphere, and the import of every air compressor is thereafter communicated with the outlet of an air compressor above by main connecting tube; On connecting tube between adjacent two air compressors, be also provided with branch line, branch line is connected with the suction port of the level pressure gas storage equipment of corresponding pressure; The outlet of last air compressor is directly connected with the level pressure gas storage equipment of a corresponding pressure by pipeline.
2. compression air energy-storing apparatus according to claim 1, it is characterized in that: on the main connecting tube between adjacent two air compressors, be equipped with control valve, and described control valve is arranged on the main connecting tube in downstream of corresponding branch line tie point; On the pipeline being connected with each level pressure gas storage equipment, be also provided with control valve.
3. compression air energy-storing apparatus according to claim 1, is characterized in that: every air compressor drives by motor, and each motor is all furnished with frequency variator.
4. according to the compression air energy-storing apparatus described in claims 1 to 3 any one, it is characterized in that: the rated flow of all air compressors is consistent.
5. compression air energy-storing apparatus according to claim 4, it is characterized in that: the corresponding minimum electric energy input power grade of rated power of First air compressor, the corresponding second electric energy input power grade of rated power sum of front two air compressors ... by that analogy, the corresponding maximum power input power of all air compressor rated power sums grade; The inlet pressure of First air compressor design is atmospheric pressure, the inlet pressure of every air compressor design is thereafter the outlet pressure of an air compressor above, the outlet pressure of First air compressor is the first pressure rating, the outlet pressure of second air compressor is the second pressure rating ... by that analogy, the outlet pressure of last air compressor is maximum pressure level; According to different electric energy input power grades, start the air compressor of corresponding number of units, air, by after these air compressors, can obtain the pressurized air of the pressure rating of corresponding input electric energy power level, and the pressurized air obtaining is introduced the level pressure gas storage equipment of corresponding pressure grade.
6. compression air energy-storing apparatus according to claim 5, is characterized in that: when the electric energy power of input changes greatly, when the inter-stages such as different capacity change, by the pressure rating that changes air compressor unit, carry out storage of electrical energy.
7. compression air energy-storing apparatus according to claim 5, it is characterized in that: when the electric energy power of input changes less, while changing in same power level, keep the pressure rating of air compressor unit constant, by adjusting compressed-air actuated flow, carry out storage of electrical energy.
8. compression air energy-storing apparatus according to claim 5, is characterized in that, described air compressor is a kind of or its combination in piston compressor, Axial Flow Compressor, centrifugal compressor or screw compressor.
9. compression air energy-storing apparatus according to claim 5, is characterized in that, described level pressure gas storage equipment is level pressure gas storage holder, or employing can guarantee the air liquefying apparatus that back pressure is stable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320788470.XU CN203584748U (en) | 2013-12-03 | 2013-12-03 | Compressed air energy storage device |
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| CN201320788470.XU CN203584748U (en) | 2013-12-03 | 2013-12-03 | Compressed air energy storage device |
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| CN203584748U true CN203584748U (en) | 2014-05-07 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644095A (en) * | 2013-12-03 | 2014-03-19 | 中国科学院工程热物理研究所 | Compressed air energy storage method and device suitable for variable working condition operation |
| CN107975392A (en) * | 2017-11-20 | 2018-05-01 | 清华大学 | A kind of compressed-air energy storage multi-stage compression method |
| CN109084498A (en) * | 2018-08-15 | 2018-12-25 | 中国科学院工程热物理研究所 | A kind of adiabatic compression air-high temperature difference pump coupled heat system |
| WO2021048829A1 (en) | 2019-09-14 | 2021-03-18 | Cheesecake Energy Ltd | Constant pressure gas storage in containments with mitigation for gas dissolution problems |
| CN113673868A (en) * | 2021-08-20 | 2021-11-19 | 广东鑫钻节能科技股份有限公司 | Air compression station electric energy management method based on Internet of things |
| CN114352504A (en) * | 2021-12-31 | 2022-04-15 | 华北电力大学（保定） | Multi-stage compression storage structure for reducing heat release temperature of Brayton cycle and application |
| CN116667399A (en) * | 2023-08-01 | 2023-08-29 | 九州绿能科技股份有限公司 | Series energy storage system, energy storage method and power generation method |
-
2013
- 2013-12-03 CN CN201320788470.XU patent/CN203584748U/en not_active Withdrawn - After Issue
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644095A (en) * | 2013-12-03 | 2014-03-19 | 中国科学院工程热物理研究所 | Compressed air energy storage method and device suitable for variable working condition operation |
| CN103644095B (en) * | 2013-12-03 | 2016-05-18 | 中国科学院工程热物理研究所 | A kind of method of compressed-air energy storage of applicable variable parameter operation and device |
| CN107975392A (en) * | 2017-11-20 | 2018-05-01 | 清华大学 | A kind of compressed-air energy storage multi-stage compression method |
| CN107975392B (en) * | 2017-11-20 | 2018-10-30 | 清华大学 | A kind of compressed-air energy storage multi-stage compression method |
| CN109084498A (en) * | 2018-08-15 | 2018-12-25 | 中国科学院工程热物理研究所 | A kind of adiabatic compression air-high temperature difference pump coupled heat system |
| WO2021048829A1 (en) | 2019-09-14 | 2021-03-18 | Cheesecake Energy Ltd | Constant pressure gas storage in containments with mitigation for gas dissolution problems |
| CN113673868A (en) * | 2021-08-20 | 2021-11-19 | 广东鑫钻节能科技股份有限公司 | Air compression station electric energy management method based on Internet of things |
| CN113673868B (en) * | 2021-08-20 | 2024-03-05 | 广东鑫钻节能科技股份有限公司 | Air compression station electric energy management method based on Internet of things |
| CN114352504A (en) * | 2021-12-31 | 2022-04-15 | 华北电力大学（保定） | Multi-stage compression storage structure for reducing heat release temperature of Brayton cycle and application |
| CN114352504B (en) * | 2021-12-31 | 2023-05-05 | 华北电力大学（保定） | Multistage compression storage structure for reducing brayton cycle exothermic temperature and application |
| CN116667399A (en) * | 2023-08-01 | 2023-08-29 | 九州绿能科技股份有限公司 | Series energy storage system, energy storage method and power generation method |
| CN116667399B (en) * | 2023-08-01 | 2023-09-29 | 九州绿能科技股份有限公司 | Series energy storage system, energy storage method and power generation method |
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Granted publication date: 20140507 Effective date of abandoning: 20160518 |
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