CN105781741A - Compressed air energy-storing and peak-shaving power generation system - Google Patents
Compressed air energy-storing and peak-shaving power generation system Download PDFInfo
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- CN105781741A CN105781741A CN201610199171.0A CN201610199171A CN105781741A CN 105781741 A CN105781741 A CN 105781741A CN 201610199171 A CN201610199171 A CN 201610199171A CN 105781741 A CN105781741 A CN 105781741A
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- holding vessel
- air
- compressed air
- energy
- generation system
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas- turbine plants for special use
- F02C6/14—Gas-turbine plants having means for storing energy, e.g. for meeting peak loads
- F02C6/16—Gas-turbine plants having means for storing energy, e.g. for meeting peak loads for storing compressed air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas- turbine plants for special use
- F02C6/18—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas- turbine plants for special use using the waste heat of gas-turbine plants outside the plants themselves, e.g. gas-turbine power heat plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F1/00—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped
- F04F1/06—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped the fluid medium acting on the surface of the liquid to be pumped
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/95—Preventing corrosion
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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 invention discloses a compressed air energy-storing and peak-shaving power generation system which comprises a compressed air storing tank used for storing trough electric power, and a sealed liquid storing tank. The compressed air storing tank stores energy in an electric power trough and releases energy to generate power through a gas turbine in an electric power crest. Sealed liquid located in the sealed liquid storing tank is input into the compressed air storing tank through the sealed liquid storing tank, and therefore a liquid sealing layer between a sealed air interface and a stored water interface in the compressed air storing tank is formed. The amount of volatizing stored water entering compressed air is reduced, and corrosion and damage to subsequent parts are avoided.
Description
Technical field
The present invention relates to a kind of energy-storage generating apparatus, be especially for meeting the gas turbine energy-storing and power-generating system that peak load regulates.
Background technology
Power industry as social foundation's industry, is one of the lifeblood industry of national development.Along with China's economic society high speed development, electricity needs is growing, and China electric power industry construction enters fast-developing period.Along with the promotion of scientific and technological progress and social need, electrical network just from traditional defeated, become, distribution accelerate to meet social resources distribute rationally the energy into major function carry, the platform evolution of energy game.Under the overall background of Energy restructuring, along with power system is more and more high to the requirement of the conditions such as safe efficient, stable operation, a brand-new stage intelligent grid is stepped in the development of China's electrical network gradually.Therefore, build usefulness height, invest the intelligent grid of strain low, safe and reliable, flexible and become the developing direction of China's electrical network.
Intelligent grid is a hybrid system having gathered multiple contemporary advanced, these technology include Power Electronic Technique, information technology, energy storage technology, sensing measurement technology etc., and energy storage technology is a wherein vital ring, it is significant in intelligent grid: 1) can effectively smooth load curve and peak-valley difference round the clock, it is achieved dsm；2) regulate mains frequency, stabilize the fluctuation of load, safeguards system stable operation；3) user side accessory power supply, improves the quality of power supply and power supply reliability；4) optimize the configuration using of regenerative resource, promote regenerative resource exploitation.
Compressed air energy storage technology is a kind of energy storage technology of current relatively broad application, its cardinal principle utilizes the dump power of power system load low-valley interval to be compressed air operation, and it is stored in high pressure sealing facility, discharge to drive gas turbine power generation in the load peak period.The advantages such as it is low that compressed air energy storage technology has cost, and safety is higher, reliable, life-span length.
Typical compressed-air energy-storage system in prior art, such as the patent of invention of 200710098467.4, including compressor, gas storage, combustor, gas turbine and electromotor；When electric load low ebb, utilizing electrical network electrical energy drive motor, motor driven compressor compression air sends into gas storage；When electric load peak, gas storage the compression air discharged combustion gas after combustion chambers burn enters gas turbines driving generators generating, and electric energy is sent into electrical network.But, such compressed-air energy-storage system, along with the discharge of gas storage compressed air, its air pressure is gradually lowered, thus causing that the efficiency of gas turbine declines.Improvement as prior art, 200780031109.X propose the compressed air energy storage power generating system of a kind of constant voltage, its air accumulator includes two air accumulators connected by hydraulic pump/motor, between two air accumulators, storage water is set, store water by hydraulic pump control to flow between two air accumulators, thus changing the volume of aerofluxus air accumulator to ensure that pressure is stable, thus ensure that the stabilised efficiency of gas turbine.But, in the technical scheme of this improvement, owing to introducing storage water in air accumulator, it is likely to volatilization in exhaust process, thus increasing compressed-air actuated moisture, cause corrosion or degeneration that downstream gas turbine, heat exchanger, tubing or instrument cause due to moisture.
In order to solve above-mentioned technical problem, earlier application proposes the compressed-air energy-storage system of a kind of improvement, the sealing isolated element that can move freely is set between the compression air and storage water termination of constant-pressure gas storage tank, thus reducing storage water to be volatized into the infringement that compression air causes.But, in order to better completely cut off moisture, sealing isolated element needs to be fully contacted with constant-pressure gas storage tank, there is friction thus causing sealing, affecting compressed-air actuated compression effectiveness between isolated element needs and constant-pressure gas storage tank；And if reduction seals the sealing area of isolated element, then it is likely to affect the sealing for moisture.Accordingly, as further improvement, the present invention proposes a kind of compressed air energy-storing electricity electricity generation system, it is possible to solve the problems referred to above of prior art.
Summary of the invention
As one aspect of the present invention, it is provided that compressed air energy-storing electricity electricity generation system, including compressor, it is compressed by motor-driven and by atmospheric air when energy storage；First holding vessel, it is constant-pressure gas storage device, arranges by air intake and air outlet slit, can be accepted the compression air of compressor by air intake, can be discharged by compression air by air outlet slit；Second holding vessel, it is transformation caisson, is connected with described first holding vessel by connecting pipeline；Described first holding vessel and the second holding vessel accommodate storage water, so that described second holding vessel is airtight sealing；Hydraulic pump/motor, it is arranged at described connecting pipeline, hydraulic pump/motor according to the pressure operation of described first holding vessel, so that described first holding vessel keeps constant voltage；Electromotor, its compression air utilizing the first holding vessel discharge and the burning gases after fuel combustion are to drive turbine, and are generated electricity by the driving of this turbine；Liquid impervious layer is set between described first holding vessel compressed air interface and storage water termination, thus avoiding described storage water to be volatized into compression air.
Preferably, use silicone oil as liquid impervious layer.
Preferably, arranging dehydrating unit between air outlet slit and the described turbine of described first holding vessel, the moisture in the compression air discharged from the first holding vessel can be got rid of by described dehydrating unit.
Preferably, described dehydrating unit includes at least one in desiccant or ethylene glycol.
Preferably, described dehydrating unit includes condenser, removes the moisture in compression air by the mode condensed.
Preferably, also include the sealing liquid storage tank communicated with described first holding vessel by the first valve, when the thickness of described sealant is lower than specific threshold, the sealing liquid in described sealing liquid storage tank is added to described sealant；The entrance height of described sealing liquid is higher than described sealant.
Preferably, described sealing liquid storage tank is communicated with described compressor by the second valve, when requiring supplementation with sealing liquid, first opening described second valve makes the air pressure of described sealing liquid storage tank increase, when the air pressure of described sealing liquid storage tank is equal to the air pressure of described first holding vessel, open described first valve, the sealing liquid in described sealing liquid storage tank is added to described sealant.
Preferably, also include the thickness transducer being arranged at the first holding vessel top, for measuring the height of described sealant, thus the height according to described sealant supplements sealing liquid.
As another aspect of the present invention, it is provided that a kind of power system load energy storage dispatching patcher, it includes above-mentioned compressed air energy-storing electricity electricity generation system.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the compressed air energy-storing electricity electricity generation system of the embodiment of the present invention.
Detailed description of the invention
According to specific exemplary embodiment, invention has been described herein.Carrying out suitable replacement without departing from the scope of the invention or amendment will be apparent to one skilled in the art.Exemplary embodiment is merely illustrative, rather than the restriction to the scope of the present invention, and the scope of the present invention be defined by the appended.
The compressed air energy-storing electricity electricity generation system of the embodiment of the present invention, referring to Fig. 1, including compressor 1, cooler 2, first holding vessel 3, hydraulic pump/motor 4, the second holding vessel 5, dehydrating unit 6, heat exchanger 7, combustor 8, gas turbine 9, electromotor 10 and sealing liquid storage tank 11.
Extraneous air is compressed thus storing electric power by compressor 1, when power load low ebb, utilizes low ebb electrically-driven compressors 1 to operate by motor, thus storing the energy in compression air.Compressor 1 can be single compressor or the compressor bank including compound compressor.
Air temperature after being compressed raises, and cooler 2 is for the air cooling-down after will heat up, thus being pressed into compressed air storage tank.Compressed air storage tank includes the first holding vessel 3, hydraulic pump/motor 4 and the second holding vessel 5.First holding vessel 3 and the second holding vessel 5 are rigid container, compressed air storage tank accommodates storage water simultaneously, it is by pressure differential or hydraulic pump drive between the second holding vessel 5 and the first holding vessel 3, it is thus possible to flow between the second holding vessel 5 and the first holding vessel 3, keep the constant pressure of the first holding vessel 3.
First holding vessel 3 has compressed air inlet 31 and compressed air outlet 32.In the electricity consumption trough energy storage stage, when the first holding vessel 3 receives compression air by compressed air inlet 31, hydraulic pump uses trough electricity as the energy source of fluid power motor, storage water is transported in the second holding vessel 5, thus the accommodation compression volume of air increased in the first holding vessel 3, keep the pressure in the first holding vessel 3 constant.The energy stage is released at electricity consumption crest, compression air is discharged by compressed air outlet 32 at the first holding vessel 3, by the pressure differential between the second holding vessel 5 and the first holding vessel 3, storage water is transported in the first holding vessel 3, thus the accommodation compression volume of air reduced in the first holding vessel 3, keep the pressure in the first holding vessel 3 constant；Storage water simultaneously drives electromotor in moving process and generates electricity.Can pass through to monitor the atmospheric pressure in the first holding vessel 3, thus controlling hydraulic pump/motor 4.
Seal liquid storage tank 11 to be used for storing sealing liquid, the liquid outlet sealing liquid storage tank 11 is communicated with the first holding vessel 3 by the first valve 12, input the first holding vessel 3 will be located in sealing liquid therein, air and the confining bed 33 stored between water is sealed in first holding vessel 3 thus being formed, thus reducing storage water to be volatized into compression air, it is to avoid for corrosion and the damage of subsequent parts.Sealing liquid can select density less than water, and water-fast liquid, for instance silicone oil is as sealing liquid.
Owing to the compression atmospheric pressure in the first holding vessel 3 is relatively big, the fluid input mode of routine is used to be inputted in the first holding vessel 3 by the sealing liquid sealed in liquid storage tank 11.Preferably, the top sealing liquid storage tank 11 is communicated with the compressed air outlet of cooler 2 by the second valve 13.When requiring supplementation with sealing liquid, first opening the second valve 13 makes the air pressure of sealing liquid storage tank 11 increase, when the air pressure of this sealing liquid storage tank 11 is more than or equal to the air pressure of the first holding vessel 3, open the first valve 12, the sealing liquid sealed in liquid storage tank 11 is added to sealant 33.Preferably, in order to avoid the reduction of sealant thickness is for the impact of sealing effectiveness, it is possible to arrange thickness transducer at the first holding vessel 3 top, for instance sonac, for measuring the height of sealant 33, thus the height according to sealant 33 supplements sealing liquid；When the thickness of sealant 33 is lower than specific threshold, the sealing liquid sealed in liquid storage tank 11 is added to sealant 33.
Dehydrating unit 6 is arranged at the rear end pipeline of the air outlet slit 32 of the first bin 3, for removing the moisture in compression air further, thus ensureing that subsequent parts is not affected by moisture.Dehydrating unit 6 can use at least one included in desiccant or ethylene glycol；Optionally, dehydrating unit 6 includes condenser, removes the moisture in compression air by the mode condensed.
When crest generates electricity, heat exchanger 7 communicates with the weary gas output stream of compression air flow circuit and gas turbine respectively, by the output of gas turbine weary gas, compression air is heated wherein, thus improving the efficiency of combustor.After combustor 8 is arranged at heat exchanger 7, compression air burns in combustor 8 with fuel, thus exporting combustion gas.Output combustion gas is transported to gas turbine 9, drives gas turbine 9 to make coupled electromotor 10 generate electricity.
Below being only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment, and all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.For those skilled in the art, some improvements and modifications without departing from the principles of the present invention, should be regarded as falling into protection scope of the present invention.
Claims (4)
1. a compressed air energy-storing electricity electricity generation system, including compressor, it is compressed by motor-driven and by atmospheric air when energy storage；First holding vessel, it is constant-pressure gas storage device, arranges by air intake and air outlet slit, can be accepted the compression air of compressor by air intake, can be discharged by compression air by air outlet slit；Second holding vessel, it is transformation caisson, is connected with described first holding vessel by connecting pipeline；Described first holding vessel and the second holding vessel accommodate storage water, so that described second holding vessel is airtight sealing；Hydraulic pump/motor, it is arranged at described connecting pipeline, hydraulic pump/motor according to the pressure operation of described first holding vessel, so that described first holding vessel keeps constant voltage；Electromotor, its compression air utilizing the first holding vessel discharge and the burning gases after fuel combustion are to drive turbine, and are generated electricity by the driving of this turbine；It is characterized in that: between described first holding vessel compressed air interface and storage water termination, liquid impervious layer is set, thus avoiding described storage water to be volatized into compression air.
2. compressed air energy-storing electricity electricity generation system according to claim 1, it is characterised in that: described liquid impervious layer includes silicone oil.
3. compressed air energy-storing electricity electricity generation system according to claim 2, it is characterized in that: include the sealing liquid storage tank communicated by the first valve with described first holding vessel, when the thickness of described sealant is lower than specific threshold, the sealing liquid in described sealing liquid storage tank is added to described sealant；The entrance height of described sealing liquid is higher than described sealant.
4. a power system load energy storage dispatching patcher, it includes the compressed air energy-storing electricity electricity generation system that one of claim 1-3 is described.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610199171.0A CN105781741B (en) | 2016-04-02 | 2016-04-02 | A kind of compressed-air energy storage peaking generation system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610199171.0A CN105781741B (en) | 2016-04-02 | 2016-04-02 | A kind of compressed-air energy storage peaking generation system |
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| CN105781741A true CN105781741A (en) | 2016-07-20 |
| CN105781741B CN105781741B (en) | 2017-08-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300401A (en) * | 2016-10-24 | 2017-01-04 | 江苏峰谷源储能技术研究院有限公司 | A kind of compound energy-storing and power-generating system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2895937B2 (en) * | 1990-09-12 | 1999-05-31 | 株式会社日立製作所 | Air storage power plant |
| CN101289963A (en) * | 2007-04-18 | 2008-10-22 | 中国科学院工程热物理研究所 | Compressed-air energy-storage system |
| CN101506469A (en) * | 2006-08-21 | 2009-08-12 | 韩国机械研究院 | Compressed-air-storing electricity generating system and electricity generating method using the same |
| CN103221694A (en) * | 2010-04-09 | 2013-07-24 | 希普斯通公司 | System and method for energy storage and retrieval |
| CN103518050A (en) * | 2011-01-14 | 2014-01-15 | 通用压缩股份有限公司 | Compressed gas storage and recovery system and method of operation systems |
-
2016
- 2016-04-02 CN CN201610199171.0A patent/CN105781741B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2895937B2 (en) * | 1990-09-12 | 1999-05-31 | 株式会社日立製作所 | Air storage power plant |
| CN101506469A (en) * | 2006-08-21 | 2009-08-12 | 韩国机械研究院 | Compressed-air-storing electricity generating system and electricity generating method using the same |
| CN101289963A (en) * | 2007-04-18 | 2008-10-22 | 中国科学院工程热物理研究所 | Compressed-air energy-storage system |
| CN103221694A (en) * | 2010-04-09 | 2013-07-24 | 希普斯通公司 | System and method for energy storage and retrieval |
| CN103518050A (en) * | 2011-01-14 | 2014-01-15 | 通用压缩股份有限公司 | Compressed gas storage and recovery system and method of operation systems |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300401A (en) * | 2016-10-24 | 2017-01-04 | 江苏峰谷源储能技术研究院有限公司 | A kind of compound energy-storing and power-generating system |
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| CN105781741B (en) | 2017-08-11 |
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Inventor after: Zhang Lequn Inventor after: Zheng Guo Inventor after: Li Gao Inventor after: Deng Hebiao Inventor after: Zhang Mingyong Inventor after: You Jian Inventor before: Huang Youfeng |
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Effective date of registration: 20170714 Address after: 524099 No. 168 transfer road, Chikan District, Guangdong, Zhanjiang Applicant after: Zhanjiang Utilities Electric Co., Ltd. Address before: 350000 Fuzhou, Gulou District, Fujian City, the new right road, No. 29 Applicant before: Huang Youfeng |
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Inventor after: You Jian Inventor after: Zhang Lequn Inventor after: Zheng Guo Inventor after: Li Gao Inventor after: Deng Hebiao Inventor after: Zhang Mingyong Inventor before: Zhang Lequn Inventor before: Zheng Guo Inventor before: Li Gao Inventor before: Deng Hebiao Inventor before: Zhang Mingyong Inventor before: You Jian |
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