CN108194153A - Promote the method and device of compressed-air energy-storage system energy conversion efficiency - Google Patents

Promote the method and device of compressed-air energy-storage system energy conversion efficiency Download PDF

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Publication number
CN108194153A
CN108194153A CN201810160585.1A CN201810160585A CN108194153A CN 108194153 A CN108194153 A CN 108194153A CN 201810160585 A CN201810160585 A CN 201810160585A CN 108194153 A CN108194153 A CN 108194153A
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CN
China
Prior art keywords
energy
heat source
storage system
air
heat pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810160585.1A
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Chinese (zh)
Inventor
赵俊东
王磊
王楠
王铁
张正秋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gezhouba Dam Zhongke Energy Storage Technology Co Ltd
Original Assignee
Gezhouba Dam Zhongke Energy Storage Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gezhouba Dam Zhongke Energy Storage Technology Co Ltd filed Critical Gezhouba Dam Zhongke Energy Storage Technology Co Ltd
Priority to CN201810160585.1A priority Critical patent/CN108194153A/en
Publication of CN108194153A publication Critical patent/CN108194153A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K3/00Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
    • F01K3/14Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having both steam accumulator and heater, e.g. superheating accumulator
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K7/00Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/02Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of multiple-expansion type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B30/00Heat pumps
    • F25B30/06Heat pumps characterised by the source of low potential heat

Abstract

The invention discloses the method and devices for promoting compressed-air energy-storage system energy conversion efficiency,Compressor is connect with cooler group,One end of cooler group is connect with caisson,Caisson is connect with one end of reheater group,Reheater group is connect with expanding machine,Reheater group is connect with high-grade heat source system,One end of high-grade heat source system and heat pump system connects,The other end of heat pump system is connected with low-grade heat source,Air is stored after compressor compresses into caisson,Low-grade heat source is converted by high-grade heat source by heat pump system,The air of high-grade heat source heating expander inlet for auxiliary or individually,The heated rear expanding machine that enters of pressure-air in caisson does work,By in compressed-air energy-storage system,Add heat pump system,For obtaining the energy transfer of low-grade heat source to another heat source compared with high-grade heat source,And to being utilized compared with high-grade heat source,To promote the complex energy transformation efficiency of compressed-air energy-storage system.

Description

Promote the method and device of compressed-air energy-storage system energy conversion efficiency
Technical field
The present invention relates to energy storage field, it particularly relates to a kind of promotion compressed-air energy-storage system energy conversion The method and device of efficiency.
Background technology
Currently by regenerative resource change based on one of " the third time industrial revolution " breeding in development, energy storage make For one of " the third time industrial revolution " five big mainstay, will play a significant role in this industrial revolution.Energy storage technology can It is the weight of reasonable, the efficient clean utilization energy to adjust energy supply and demand in time, space, intensity and modal mismatch Want means, be ensure safety, reliably, the important technology of quality supply support.Energy storage technology can not only support extensive concentration Formula renewable energy power generation is sent out and consumption, additionally it is possible to and promote distribution type renewable energy power generation flexible access and efficiently utilize, And power supply reliability and power quality are remarkably improved, and Study on Power Grid Planning and management mode will be pushed to become Leather.
Compressed air energy storage technology is to be acknowledged as being suitble to one of technology of extensive power energy storage, has stored energy capacitance Greatly, many advantages, such as energy storage period is long, long lifespan and specific investment cost are small.Traditional compressed-air energy-storage system is based on combustion gas wheel A kind of energy-storage system that machine technology grows up, operation principle are in low power consumption, and air is stored in storage after compressor compresses In device of air, electric energy is made to be converted into air internal energy and is stored;In peak of power consumption, pressure-air is discharged from caisson, into Enter gas-turbine combustion chamber with one combust of fuel, then drive turbine power generation.Advanced adiabatic compression air energy storage systems be On the basis of conventional compression air energy storage systems, the heat of compression that air generates in compression process is recycled, is broken away from Limitations of the conventional compression air energy storage systems to fossil fuel.Both compressed air energy storage technologies and at present it is other various Improved compressed air energy storage technology, due to the tow taste heat to being generated in system, such as system petrol station cooling heat, motor Generator cooling heat, machine cascade EDFA heat and grade postcooling heat etc. is partially compressed in cooling heat, does not carry out abundant profit With, but be lost in environment indirectly after the cooling of supercooling medium, this causes the actual efficiency of each compressed-air energy-storage system Compared with corresponding highest theoretical efficiency, still have a certain upgrade space.
For the problems in the relevant technologies, currently no effective solution has been proposed.
Invention content
For the above-mentioned technical problem in the relevant technologies, the present invention proposes that a kind of promotion compressed-air energy-storage system energy turns Change the method and device of efficiency, above-mentioned technical problem can be solved.
To realize the above-mentioned technical purpose, the technical proposal of the invention is realized in this way:
A kind of method for promoting compressed-air energy-storage system energy conversion efficiency, includes the following steps:
S1. air is stored after compressor compresses into caisson;
S2. low-grade heat source is converted by high-grade heat source by heat pump system;
S3. high-grade heat source heats the air of expander inlet for auxiliary or individually;
S4. the heated rear expanding machine that enters of pressure-air in caisson does work.
Further, the compressed-air energy-storage system in the method, including but not limited to conventional compression air energy storage system System, advanced adiabatic compression air energy storage systems, liquefied air energy-storage system.
Further, the low-grade heat source include energy-storage system self-operating during generate low-grade heat source and/ Or the low-grade heat source outside energy-storage system.
Further, the low-grade heat source generated during the energy-storage system self-operating includes but not limited to cooler Each petrol station cooling medium of cooling medium, energy-storage system, motor cooling medium, the generator cooling medium of group.
Further, the low-grade heat source outside the energy-storage system include but not limited to air, the earth, surface water, Lower water, low-grade industrial exhaust heat.
Further, the heat pump system be selected from, but not limited to, steam compression heat pump, absorption heat pump, chemical heat pump, Any one of steam jet heat pump, single-stage heat pump, multi-stage heat pump, cascade type heat pump.
Further, the compressor is selected from, but not limited to, reciprocating compressor, centrifugal compressor, axial-flow type compression Machine, helical-lobe compressor it is any.
It is a kind of promoted compressed-air energy-storage system energy conversion efficiency device, including compressor, the compressor with it is cold But device group connects, and one end of the cooler group is connect with caisson, and the caisson is connect with one end of reheater group, The reheater group is connect with expanding machine, and the reheater group is connect with high-grade heat source system, the high-grade heat source system It is connect with one end of heat pump system, the other end of the heat pump system is connected with low-grade heat source.
Further, the high-grade heat source system includes the room temperature being connect with heat pump system cooling medium tank and high temperature Medium tank is cooled down, the room temperature cools down the medium tank other end and the other end of High-temperature cooling medium tank respectively connects with reheater group It is logical.
Further, the low-grade heat source includes cooling water equipped with reserved cooling system, the reserved cooling system Pond, the cooling pond connect respectively with cooling tower and low-grade heat source, the cooling pond by water circulating pump with it is low-grade Heat source connects, and low-grade heat source connects respectively with cooling tower and heat pump system.
Beneficial effects of the present invention:By in compressed-air energy-storage system, adding heat pump system, for by low-grade heat The energy transfer in source is obtained compared with high-grade heat source, and to another heat source to being utilized compared with high-grade source, empty to promote compression The complex energy transformation efficiency of gas energy storage system.
Description of the drawings
It in order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the present invention Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings Obtain other attached drawings.
Fig. 1 is a kind of device of the promotion compressed-air energy-storage system energy conversion efficiency described according to embodiments of the present invention Recycling energy-storage system compressor cooler heat flow chart;
Fig. 2 is a kind of returning for the device of the promotion compressed-air energy-storage system energy conversion efficiency described according to embodiments of the present invention Receive the flow chart of energy-storage system subsidiary engine cooler heat;
Fig. 3 is a kind of returning for the device of the promotion compressed-air energy-storage system energy conversion efficiency described according to embodiments of the present invention Receive the flow chart that external waste heat is used for compressed-air energy-storage system;
Fig. 4 is a kind of returning for the device of the promotion compressed-air energy-storage system energy conversion efficiency described according to embodiments of the present invention Store up the flow chart that energy system compressors cooler heat is used for external heat supply.
In figure:1. compressor;2. caisson;3. expanding machine;4. heat pump system;5. room temperature cools down medium tank;6. High-temperature cooling medium tank;7. cooling pond;8. cooling tower;9. water circulating pump.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art's all other embodiments obtained belong to what the present invention protected Range.
As shown in Figs 1-4, a kind of promotion compressed-air energy-storage system energy conversion effect according to embodiments of the present invention The method of rate, includes the following steps:
S1. during air is stored after the compression of compressor 1 to caisson 2;
S2. low-grade heat source is converted by high-grade heat source by heat pump system 4;
S3. high-grade heat source heats the air of expander inlet for auxiliary or individually;
S4. it does work after pressure-air in caisson 2 is heated into expanding machine 3.
Compressed-air energy-storage system in the method, including but not limited to conventional compression air energy storage systems, it is advanced absolutely Hot compressed air energy-storage system, liquefied air energy-storage system.
The low-grade heat source includes the low-grade heat source and/or energy-storage system that are generated during energy-storage system self-operating External low-grade heat source.
The low-grade heat source generated during the energy-storage system self-operating includes but not limited to the cooling of cooler group Each petrol station cooling medium of medium, energy-storage system, motor cooling medium, generator cooling medium.
Low-grade heat source outside the energy-storage system includes but not limited to air, the earth, surface water, underground water, low product Position industrial exhaust heat.
The heat pump system 4 is selected from, but not limited to, steam compression heat pump, absorption heat pump, chemical heat pump, steam injection Any one of formula heat pump, single-stage heat pump, multi-stage heat pump, cascade type heat pump.
The compressor 1 is selected from, but not limited to, reciprocating compressor, centrifugal compressor, Axial Flow Compressor, screw rod pressure Contracting machine it is any.
The compressor 1 is connect with cooler group, and one end of the cooler group is connect with caisson 2, the gas storage Device 2 is connect with one end of reheater group, and the reheater group is connect with expanding machine 3, the reheater group and high-grade heat source System connects, and the high-grade heat source system is connect with one end of heat pump system 4, the other end and the low product of the heat pump system 4 Position heat source connection.
The high-grade heat source system includes the room temperature being connect with heat pump system 4 cooling medium tank 5 and High-temperature cooling is situated between The other end of matter tank 6, room temperature cooling 5 other end of medium tank and High-temperature cooling medium tank 6 is respectively connected with reheater group.
For the low-grade heat source equipped with reserved cooling system, the reserved cooling system includes cooling pond 7, described cold But pond 7 connects respectively with cooling tower 8 and low-grade heat source, and the cooling pond 7 is connected by water circulating pump 9 and low-grade heat source Logical, low-grade heat source connects respectively with cooling tower 8 and heat pump system 4.
In order to facilitate understand the present invention above-mentioned technical proposal, below by way of in specifically used mode to the present invention it is above-mentioned Technical solution is described in detail.
When specifically used, a kind of dress for promoting compressed-air energy-storage system energy conversion efficiency according to the present invention It puts, by using heat pump system, the heat of the generation low-grade heat source in energy-storage system operational process is transferred to energy-storage system Internal another heat source and obtain compared with high-grade heat source, it is transformed for compressed-air energy-storage system self-energy compared with high-grade heat source Journey.
In thermal energy storage process, air is successively by the compressor first order of compound compressor 1, the compressor second level, compressor After the third level, the compressor fourth stage, compressor level V, the 6th grade 7 of compressor, store to caisson 2;In exoergic process, Pressure-air is successively by the expanding machine first order of multiple expansion engine 3, the expanding machine second level, the expanding machine third level, expanding machine the After the 6th grade of level Four, expanding machine level V, expanding machine grade acting, air is drained into.Heat can be generated in air step by step compression process Amount, hot-air is respectively through subcooler group, that is, compressor first order interstage cooler, compressor second level interstage cooler, compression Machine third level interstage cooler, compressor fourth stage interstage cooler, compressor level V interstage cooler, the 6th grade of compressor Interstage cooler cools;In air step by step expansion process, pressure-air passes through expanding machine first order reheat in stage respectively Device, expanding machine second level reheat in stage device, expanding machine third level reheat in stage device, expanding machine fourth stage reheat in stage device, expansion The 6th grade of machine level V reheat in stage device, expanding machine reheat in stage device absorb heat.
The method that compressed-air energy-storage system energy conversion efficiency is promoted in the present embodiment is by compressed-air energy storage Heat pump system 4 is added in system.The low-grade cooling medium of three-level cooler is as low-temperature heat source after compressor, in thermal energy storage process In by heat pump system 4, room temperature is cooled down to the medium heating in medium tank 5 and becomes to deposit to High-temperature cooling after High-temperature cooling medium to be situated between In matter tank 6.In exoergic process, the High-temperature cooling medium in High-temperature cooling medium tank 6 heats for auxiliary or individually at different levels The air of expander inlet.In order to enhance system reliability, back-up circuit when heat pump system maintenance or failure is increased.Storage By water circulating pump 9, cooling tower 8 is returned to after cooling down compressor after three-level cooler for cooling medium in cooling pond 7.
In another embodiment, by heat pump system 4, by external low-grade heat source(Air-source, water source, source etc.)Heat Amount after promoting the medium temperature in room temperature cooling medium tank 5, is stored into high temperature medium reservoirs 6, is obtained compared with high-grade heat Source.In exoergic process, by the High-temperature cooling medium in High-temperature cooling medium tank 6, expansions at different levels are heated for auxiliary or individually The air of machine entrance.It realizes and external low-grade heat source is efficiently used, improve the comprehensive utilization ratio of the energy.
In another embodiment, in the compressed-air energy-storage system of the present embodiment, the compressor fourth stage, compressor the 5th Grade, the 6th grade of compressor compressed air, by compressor fourth stage interstage cooler, compressor level V interstage cooler, The 6th grade of grade aftercooler of compressor cools down, and the cooling water for being used for cooling air passes through heat after heat exchange heats up Pumping system 4 is used for external heating after promoting energy taste.The deep exploitation to low-grade heat source is realized, improves the energy Comprehensive utilization ratio.
Wherein, compressed-air energy storage, including conventional compression air energy storage systems, advanced adiabatic compression air energy storage systems, Liquefied air energy-storage system and in these system-baseds evolving development all types of compressed-air energy-storage systems.Heat pump system 4 include but not limited to steam compression heat pump, absorption heat pump, chemical heat pump, steam jet heat pump, single-stage heat pump, multistage Heat pump, cascade type heat pump.
For heat pump compared with the heating combined equipments such as boiler, electric heater, outstanding feature is to consume a small amount of electric energy or fuel energy, A large amount of required thermal energy can be obtained.The heating efficiency of heat pump is always larger than 1, and the thermal energy total amount that user is obtained is always greater than institute The electric energy or fuel energy of consumption.It is combined, can realized to low product with heat pump techniques by the way that absolutely empty gas energy storage technology will be compressed The recycling of position heat source, reduces system energy loss, improves the energy conversion efficiency of energy-storage system.
In conclusion by means of the above-mentioned technical proposal of the present invention, by compressed-air energy-storage system, adding heat pump System, for obtaining the energy transfer of low-grade heat source to another heat source compared with high-grade heat source, and to compared with high-grade source into Row utilizes, to promote the complex energy transformation efficiency of compressed-air energy-storage system.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.

Claims (13)

  1. A kind of 1. method for promoting compressed-air energy-storage system energy conversion efficiency, which is characterized in that include the following steps:
    S1. air passes through compressor(1)It is stored after compression to caisson(2)In;
    S2. pass through heat pump system(4)Low-grade heat source is converted into high-grade heat source;
    S3. high-grade heat source heats the air of expander inlet for auxiliary or individually;
    S4. caisson(2)In pressure-air it is heated after enter expanding machine(3)Acting.
  2. 2. a kind of method for promoting compressed-air energy-storage system energy conversion efficiency according to claim 1, which is characterized in that Compressed-air energy-storage system in the method, including but not limited to conventional compression air energy storage systems, advanced adiabatic compression are empty Gas energy storage system, liquefied air energy-storage system.
  3. 3. a kind of method for promoting compressed-air energy-storage system energy conversion efficiency according to claim 1, which is characterized in that The low-grade heat source includes low outside the low-grade heat source and/or energy-storage system that are generated during energy-storage system self-operating Grade heat source.
  4. 4. a kind of method for promoting compressed-air energy-storage system energy conversion efficiency according to claim 3, which is characterized in that The low-grade heat source generated during the energy-storage system self-operating includes but not limited to the cooling medium of cooler group, energy storage Each petrol station cooling medium of system, motor cooling medium, generator cooling medium.
  5. 5. a kind of method for promoting compressed-air energy-storage system energy conversion efficiency according to claim 3, which is characterized in that Low-grade heat source outside the energy-storage system include but not limited to air, the earth, surface water, underground water, it is low-grade industry more than Heat.
  6. 6. a kind of method for promoting compressed-air energy-storage system energy conversion efficiency according to claim 1, which is characterized in that The heat pump system(4)Be selected from, but not limited to, steam compression heat pump, absorption heat pump, chemical heat pump, steam jet heat pump, Any one of single-stage heat pump, multi-stage heat pump, cascade type heat pump.
  7. 7. a kind of method for promoting compressed-air energy-storage system energy conversion efficiency according to claim 1, which is characterized in that The compressor(1)It is selected from, but not limited to, reciprocating compressor, centrifugal compressor, Axial Flow Compressor, helical-lobe compressor It is any.
  8. 8. a kind of device for promoting compressed-air energy-storage system energy conversion efficiency, which is characterized in that including compressor(1), institute State compressor(1)It is connect with cooler group, one end of the cooler group and caisson(2)Connection, the caisson(2) It is connect with one end of reheater group, the reheater group and expanding machine(3)Connection, the reheater group and high-grade heat source system Connection, the high-grade heat source system and heat pump system(4)One end connection, the heat pump system(4)The other end and low product Position heat source connection.
  9. 9. a kind of device for promoting compressed-air energy-storage system energy conversion efficiency according to claim 8, which is characterized in that The high-grade heat source system is included and heat pump system(4)The room temperature cooling medium tank of connection(5)With High-temperature cooling medium tank (6), the room temperature cooling medium tank(5)The other end and High-temperature cooling medium tank(6)The other end respectively with reheater group connect It is logical.
  10. 10. a kind of device for promoting compressed-air energy-storage system energy conversion efficiency, feature exist according to claim 8 In the low-grade heat source includes cooling pond equipped with reserved cooling system, the reserved cooling system(7), the cooling Pond(7)Respectively with cooling tower(8)It is connected with low-grade heat source, the cooling pond(7)Pass through water circulating pump(9)With it is low-grade Heat source connect, low-grade heat source respectively with cooling tower(8)And heat pump system(4)Connection.
CN201810160585.1A 2018-02-27 2018-02-27 Promote the method and device of compressed-air energy-storage system energy conversion efficiency Pending CN108194153A (en)

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CN201810160585.1A CN108194153A (en) 2018-02-27 2018-02-27 Promote the method and device of compressed-air energy-storage system energy conversion efficiency

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Application Number Priority Date Filing Date Title
CN201810160585.1A CN108194153A (en) 2018-02-27 2018-02-27 Promote the method and device of compressed-air energy-storage system energy conversion efficiency

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CN108194153A true CN108194153A (en) 2018-06-22

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111082435A (en) * 2019-12-13 2020-04-28 葛洲坝中科储能技术有限公司 Output control system and method for wind power and compressed air energy storage
WO2022027844A1 (en) * 2020-08-07 2022-02-10 西安西热节能技术有限公司 Liquefied air energy storage peak regulation system and method based on intermediate suction of compressor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111082435A (en) * 2019-12-13 2020-04-28 葛洲坝中科储能技术有限公司 Output control system and method for wind power and compressed air energy storage
WO2022027844A1 (en) * 2020-08-07 2022-02-10 西安西热节能技术有限公司 Liquefied air energy storage peak regulation system and method based on intermediate suction of compressor

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