CN207795526U - A kind of compressed-air energy-storage system forcing precooling suitable for peak load regulation network band - Google Patents
A kind of compressed-air energy-storage system forcing precooling suitable for peak load regulation network band Download PDFInfo
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Abstract
The utility model is related to a kind of compressed-air energy-storage systems forcing precooling suitable for peak load regulation network band, including air compressor unit, energy storage device, expansion unit and cooling system；Air compressor unit includes heat exchanger between heat exchanger and the third level between heat exchanger, the second level between heat exchanger, the first order after motor, stage compressor, split-compressor, three-stage blower, four-stage compressor, forecooler, the first aerial cooler, the second aerial cooler, third aerial cooler, grade, cooling system includes compressor, throttle valve, condenser and evaporator, and expansion unit includes generator, high pressure expansion machine, low-pressure expansion machine, first-class heat exchanger and secondary heat exchanger.Compared with prior art, the utility model has the characteristics that efficient, environmental protection.
Description
Technical field
The utility model is related to a kind of compressed-air energy-storage systems forcing precooling suitable for peak load regulation network band.
Background technology
The continuous growth of energy demand, efficiently utilizing for the energy is imperative, but the problem causes when operation of power networks
Great waste and destruction.Energy storage technology can improve electric power quality, maintain power system stability；Overcome regenerative resource
The intermittent feature of (wind energy, solar energy etc.) gets up the energy such as wind energy, solar energy " splicing " using energy storage technology, can be with shape
At stable supply of electric power to user on demand, continued power；Energy-storage units can form the unit of schedulable, according to the paddy of electricity price
Peak value carrys out energy storing-releasing, improves the economic benefit of electric power.Wherein, the economical good, load ranges of compressed air accumulation of energy CAES it is big,
The advantages that longevity of service, more charge and discharge cycles.
CAES includes compressor, expanding machine, caisson, motor and generator, combustion chamber and heat exchanger and control
System and ancillary equipment etc..CAES is to carry out power energy storage in the form of storing highly compressed air：In the low power consumption period,
Extra electric energy or wind-powered electricity generation, solar energy from power grid etc. are not easy the electric power stored for drive motor, drive compressor, compression
Air into storage is in air storage chamber, in case peak hours is for generating electricity.When gas discharges, pushed after the heating of certain link swollen
Swollen machine acting power generation.Traditional CAES is combined with gas turbine technology, that is, the high pressure gas discharged enters the combustion of gas turbine
Room is burnt, is heated up by being realized with fuel co-fire, it can be voluminous one times raw compared with the gas turbine engine systems for consuming same fuel
Above electric power.
Traditional CAES is inefficient, and in the link of calming the anger in energy storage stage, a large amount of heat of compression is lost in environment, causes
System energy loss is bigger than normal, and system still has larger space at energy saving aspect.2, the raising of shortage and the environmental requirement of fossil fuel
So that traditional CAES applications of consumption combustion gas are limited, zero fuel, free of contamination novel C AES are needed to be studied.
Compressed-air energy-storage system AA-CAES with heat accumulation is to substitute combustion chamber using hot memory, is received by thermal storage device
Collect the process heat of air compression process, and the compressed air of cryogenic high pressure is heated in system power phase, increases the defeated of expanding machine
Go out work(.Due to not using fossil fuel heat sources so that the energy density of system is low, needs the air storage chamber of bigger, takes up a large area,
To greatly limit its application range.
In consideration of it, inventor furthers investigate the above problem, there is this case generation then.
Utility model content
The purpose of this utility model is to provide one kind capable of improving system effectiveness, environmental protection, can be suitably used for peak load regulation network band
Force the compressed-air energy-storage system of precooling.
In order to achieve the above object, the utility model uses such technical solution：
A kind of compressed-air energy-storage system forcing precooling suitable for peak load regulation network band, including air compressor unit, energy storage
Device, expansion unit and cooling system；Air compressor unit includes motor, stage compressor, split-compressor, three-level pressure
It exchanges heat after contracting machine, four-stage compressor, forecooler, the first aerial cooler, the second aerial cooler, third aerial cooler, grade
Heat exchanger, motor, stage compressor, two-stage compression between heat exchanger and the third level between heat exchanger, the second level between device, the first order
Machine, three-stage blower and four-stage compressor are sequentially connected successively, and the outlet side of forecooler and the inlet end of stage compressor connect
It connects, the inlet end in the outlet side of stage compressor and split-compressor is arranged in heat exchanger between the first aerial cooler and the first order
Between, the air inlet in the outlet side of split-compressor and three-stage blower is arranged in heat exchanger between the second aerial cooler and the second level
Between end, between three-level aerial cooler and the third level heat exchanger be arranged the outlet side of three-stage blower and four-stage compressor into
Between gas end, the inlet end of heat exchanger connects behind the outlet side of four-stage compressor and grade, the inlet end of heat exchanger and energy storage after grade
The inlet end of device connects, and the outlet side of energy storage device is connect with the inlet end of expansion unit, and cooling system includes compressor, section
Flow valve, condenser and evaporator, forecooler, the first aerial cooler, the second aerial cooler, third aerial cooler, the
Heat exchanger constitutes the evaporator of cooling system between heat exchanger and the third level between heat exchanger, the second level between level-one, expands unit packet
Include generator, high pressure expansion machine, low-pressure expansion machine, first-class heat exchanger and secondary heat exchanger, generator, high pressure expansion machine and
Low-pressure expansion machine is sequentially connected successively, and the inlet end of first-class heat exchanger is connect with the outlet side of the energy storage device, level-one heat exchange
The outlet side of device and the inlet end of high pressure expansion machine connect, and secondary heat exchanger is arranged swollen with low pressure in the outlet side of high pressure expansion machine
Between the inlet end of swollen machine.
As a kind of preferred embodiment of the utility model, the energy storage device is air accumulator, the outlet side of air accumulator and institute
It states and is equipped with control valve between the inlet end of first-class heat exchanger.
As a kind of preferred embodiment of the utility model, changed between the condensate liquid input end of the forecooler, the first order
Between the condensate liquid input end of hot device, the second level between the condensate liquid input end and the third level of heat exchanger heat exchanger it is cold
Lime set input end is connect by throttle valve with the condenser.
As a kind of preferred embodiment of the utility model, the motor, the stage compressor, the two-stage compression
Machine, the three-stage blower and the four-stage compressor are coaxially connected.
As a kind of preferred embodiment of the utility model, the generator, high pressure expansion machine and low-pressure expansion machine are coaxial
Series connection.
After the technical solution of the utility model, inlet air is cooled down by air compressor unit, makes acquisition
The wasted work of the identical pressure-air of acting ability is reduced, and system effectiveness significantly improves, and air compressor unit is compressed using level Four, profit
Cool down compressor air inlet with cascade EDFA device, ensure that compressor compression work under constant temperature, and the low-temperature receiver of cascade EDFA by
Normal temperature air and refrigeration system provide, and the primary of compressed air is pre-chilled in the use of normal temperature air, saves refrigeration system wasted work,
Pressure-air after cooling down simultaneously can save air compressor unit process wasted work, improve the efficiency of compressor.Refrigeration system disappears
A small amount of electric energy is consumed, a large amount of cold energy is obtained from air, it is empty that the electric energy that refrigeration system is consumed will be less than compressor set compression
The electric energy that gas is saved；The compressed-air energy-storage system of the utility model also has the energy storage period unrestricted, is suitable for various types of
The power supply of type, it is environmentally friendly the advantages that, have wide prospect of the application.Energy process is filled, the driving power of interior generator is
It is one or more in conventional power plant trough-electricity, nuclear power, wind-powered electricity generation, solar power generation, water power, it is used with effectively solving current height
Electricity consumption pressure change problem caused by electric peak.Heat exchanger sets at the air inlet of high pressure expansion machines and low-pressure expansion machine at different levels
It sets, even more considers endothermic thermal event of the gas in release of pressure itself；By the lasting heat supply of heat exchanger, gas can be effectively ensured
Can be absorbed heat rapidly release of pressure, and to further increase the unit working medium output power of expanding machine, heat source is industrial waste heat, too
The waste heat of positive energy heat or engine fuel realizes that clean energy efficiently utilizes by recycling waste heat.The utility model does not fire
Burn room, be not necessarily to consumption of fossil fuels, for the Green System of local zero-emission, compared with prior art, the present invention have efficiently,
The feature of environmental protection.
Description of the drawings
Fig. 1 be the utility model in air compressor unit, energy storage device and cooling system structure principle chart；
Fig. 2 is energy storage device and expansion unit structure principle chart in the utility model；
In figure：
10- motor 11- stage compressors
12- split-compressor 13- three-stage blowers
Heat exchanger between the 14- four-stage compressor 21- first order
Heat exchanger between the heat exchanger 23- third level between the second level 22-
30- forecoolers the first aerial coolers of 31-
32- the second aerial cooler 33- third aerial coolers
Heat exchanger after 34- grades
40- energy storage device 50- compressors
51- condenser 52- throttle valves
60- generator 61- high pressure expansion machines
62- low-pressure expansion machine 63- first-class heat exchangers
64- secondary heat exchanger 65- control valves
Specific implementation mode
In order to which the technical solution of the utility model is explained further, it is described in detail below in conjunction with the accompanying drawings.
Referring to figs. 1 to Fig. 2, a kind of compressed-air energy-storage system forcing precooling suitable for peak load regulation network band, including air
Compressor set, energy storage device 40, expansion unit and cooling system.
Air compressor unit includes motor 10, stage compressor 11, split-compressor 12, three-stage blower 13, level Four
It exchanges heat after compressor 14, forecooler 30, the first aerial cooler 31, the second aerial cooler 32, third aerial cooler 33, grade
Heat exchanger 23, motor 10, one stage of compression between heat exchanger 22 and the third level between heat exchanger 21, the second level between device 34, the first order
Machine 11, split-compressor 12, three-stage blower 13 and four-stage compressor 14 are sequentially connected successively, the outlet side of forecooler 30 with
The inlet end of stage compressor 11 connects, and heat exchanger 21 is arranged in stage compressor 11 between the first aerial cooler 31 and the first order
Outlet side and the inlet end of split-compressor 12 between, the specifically outlet side of stage compressor 11 and the first aerial cooler
31 inlet end connection, the inlet end connection of heat exchanger 21, the first order between the outlet side and the first order of the first aerial cooler 31
Between the outlet side of heat exchanger 21 connect with the inlet end of split-compressor 12.Heat exchanger between second aerial cooler 32 and the second level
22 be arranged between the outlet side of split-compressor 12 and the inlet end of three-stage blower 13, and specifically split-compressor 12 goes out
Gas end is connect with the inlet end of the second aerial cooler 32, heat exchanger 22 between the outlet side and the second level of the second air cooling 32
Inlet end connects, and the outlet side of heat exchanger 22 is connect with three-stage blower 13 between the second level.Similarly, 33 He of three-level aerial cooler
Heat exchanger 23 is arranged between the outlet side of three-stage blower 13 and the inlet end of four-stage compressor 14 between the third level, to from three-level
The air that compressor 13 comes out is cooled down.The inlet end connection of heat exchanger 34, grade behind the outlet side of four-stage compressor 14 and grade
The inlet end of heat exchanger 34 is connect with the inlet end of energy storage device 40 afterwards, the air inlet of the outlet side and expansion unit of energy storage device 40
End connection.
The effect of air compressor unit is to convert the electric energy of different capacity to the pressure of compressed air in the utility model
Energy.Air compressor unit includes several air compressors, and each compressor passes through pipe according to the sequence of design pressure from low to high
Road is connected in series with, and air can be compressed to the pressure of corresponding different capacity grade.The import of First air compressor design
Pressure is atmospheric pressure, and the inlet pressure of every air compressor design is the outlet pressure of the air compressor of front one thereafter
Power.The outlet pressure of last air compressor is maximum pressure level；According to different electric energy input power grades, start phase
The air compressor of number of units is answered, after air is by these compressors, you can obtain the pressure etc. of corresponding inputing power power grade
The compressed air of grade, obtained compressed air introduce energy storage device 40.Compressor set, the air to cool down after input heat exchange, output
Compressed air.The air to cool down after each low pressure compressor entrance input heat exchange, exports low-pressure air, low-pressure air is again
High pressure compressor is inputted, compressed air is exported from high pressure compressor.
In the utility model, cooling system includes compressor 50, throttle valve 52, condenser 51 and evaporator, forecooler
30, heat exchanger 21, the second level between the first aerial cooler 31, the second aerial cooler 32, third aerial cooler 33, the first order
Between between heat exchanger 22 and the third level heat exchanger 23 constitute cooling system evaporator.
The energy storage device of the utility model, when for inputting compressed air when energy storage, or release energy stored by output
Compressed air.Its specific working method is：According to the size of input power grade, the pressure for the compressed air for needing to store is determined
Power grade.By the electrical energy drive of input, several grades of the corresponding front of power grade air compressor, air pass sequentially through this therewith
A little compressors can obtain the compressed air under the power grade.
The cooling system includes four compressor 50, throttle valve 52, condenser 51, evaporator basic element of character compositions.It
Between be sequentially connected with pipeline, form closed system, refrigerant constantly circulates in systems.Liquid refrigerant exists
It is absorbed respectively in evaporator by after the heat of compressed air, is vaporized into the steam of low-temp low-pressure, sucked by compressor 50,
It is discharged into condenser 51 after being compressed into the steam of high pressure-temperature, to air heat release in condenser 51, is condensed into highly pressurised liquid, warp knuckle
The stream throttling of valve 52 is the refrigerant of low-pressure low-temperature, is again introduced into evaporator heat absorption vaporization, achievees the purpose that circularly cooling.Wherein,
Refrigeration system parameter is selected using each cooler outlet temperature as selection gist, and the determination of cooler outlet temperature is with compressor set
Inlet temperature, pressure ratio, cooler coefficient of efficiency, environment temperature be foundation.Evaporator in cooling system is air compression
The heat exchanger group of unit.It is equipped with aerial cooler before heat exchanger between per level-one, compressed high temperature and pressure air first passes through
It enters back into after aerial cooler cooling between grade and exchanges heat with refrigerant in heat exchanger, the air that output cools down after exchanging heat.Air
Heat exchanger cools down high temperature compressed gas between cooler and grade, and the low-temperature receiver of wherein aerial cooler is that normal temperature air carries
For, and heat exchanger includes high temperature side and low temperature side between grade, high temperature side is passed through the compressed gas after precooling, the import of low temperature side
Refrigerant after throttling for cooling system, the outlet of low temperature side is connected to the compressor 50 of cooling system.
In the utility model, expansion unit includes generator 60, high pressure expansion machine 61, low-pressure expansion machine 62, level-one heat exchange
Device 63 and secondary heat exchanger 64, generator 60, high pressure expansion machine 61 and low-pressure expansion machine 62 are sequentially connected successively, and level-one is changed
The inlet end of hot device 63 is connect with the outlet side of the energy storage device 40, outlet side and the high pressure expansion machine 61 of first-class heat exchanger 63
Inlet end connection, secondary heat exchanger 64 be arranged the outlet side of high pressure expansion machine 61 and low-pressure expansion machine 62 inlet end it
Between.
Pressure-air in the utility model is swollen unit in caisson 40 drops to a level pressure under the action of control valve 65
Enter the heat absorbed in heat exchanger in waste heat after power, temperature enters expanding machine after increasing and works, and drives electrical power generators.Due to
Heat in heat exchanger is provided by waste heat, is recycled to waste heat while without consuming fuel.Wherein, generator with it is swollen
Swollen machine connection, for driving electrical power generators when expanding machine does work.
The type of the utility model air compressor and expanding machine is unlimited, can be piston type, axial-flow type, centrifugal, spiral shell
Rod-type etc. can also be different types of combination.Heat exchanger is bushing type, shell-and-tube, jacket type, heat accumulating type, fin-tube type or plate
Wing formula.
In thermal energy storage process, motor 10 drives compressor set, air to enter one after forecooler 30 using trough-electricity
Grade compressor 11, in forecooler 30, air is cooled, and refrigeration working medium absorbs air heat energy, and air after cooling is in level-one pressure
Contracting machine 11 compresses increasing temperature and pressure, and compressed air enters the first aerial cooler 31 by the road, pressure-air after heat exchange into
Enter and continue to be cooled in heat exchanger 21 between the first order, air after cooling continues to compress and rise into split-compressor 11 by the road
Temperature boosting, and so on, pressure-air through four-stage compressor 14 compression after enter grade after heat exchanger 34 be down to room temperature by the road into
Enter in air accumulator, energy storage terminates.Air temperature in compression process can increase, and higher temperature can make compression process motor
10 wasted work increases, and reduces energy storage efficiency.Therefore in thermal energy storage process, forecooler 30 mainly carries out unpressed air cold
But cool down, and between aerial cooler, grade after heat exchanger and grade heat exchanger mainly to be cooled down to compressed air.And
Precooling during energy storage, cascade EDFA and grade postcooling provide cold by the refrigeration working medium in normal temperature air and cooling system.
In exoergic process, gas is in high pressure in high pressure tank, pressure-air through 65 reducing pressure by regulating flow of control valve extremely
Constant pressure, the gas after the heating of first-class heat exchanger 63 enter expansion work in high pressure expansion machine 61, high pressure expansion machine 61
Exhaust enters the expansion of low-pressure expansion machine 62 after the heating of secondary heat exchanger 64 and continues to do work, two expansion units and 60 phase of generator
Even, generator 60 is driven to generate electricity when the acting of expansion unit.It is right since inlet temperature is higher during expansion work for air
The shaft work of outer output is bigger.Therefore during expansion work, the main function of heat exchanger is the air to entering expanding machine
It heats up.The wherein heat source of first-class heat exchanger 63 and secondary heat exchanger 64 is provided by waste heat.
The product form of the utility model is not limited to this case diagram and embodiment, anyone carries out it similar thinking
Appropriate changes or modifications all should be regarded as the patent category for not departing from the utility model.
Claims (5)
1. a kind of compressed-air energy-storage system forcing precooling suitable for peak load regulation network band, it is characterised in that：It is compressed including air
Unit, energy storage device, expansion unit and cooling system；Air compressor unit includes motor, stage compressor, two-stage compression
Machine, three-stage blower, four-stage compressor, forecooler, the first aerial cooler, the second aerial cooler, third aerial cooler,
Heat exchanger between heat exchanger and the third level between heat exchanger, the second level between heat exchanger, the first order after grade, motor, stage compressor,
Split-compressor, three-stage blower and four-stage compressor are sequentially connected successively, the outlet side of forecooler and stage compressor
Inlet end connects, and heat exchanger is arranged in the outlet side of stage compressor and split-compressor between the first aerial cooler and the first order
Inlet end between, heat exchanger is arranged in the outlet side of split-compressor and three stage compression between the second aerial cooler and the second level
Between the inlet end of machine, heat exchanger is arranged in the outlet side of three-stage blower and level Four pressure between three-level aerial cooler and the third level
Between the inlet end of contracting machine, the inlet end of heat exchanger connects behind the outlet side of four-stage compressor and grade, the air inlet of heat exchanger after grade
End is connect with the inlet end of energy storage device, and the outlet side of energy storage device is connect with the inlet end of expansion unit, and cooling system includes
Compressor, throttle valve, condenser and evaporator, forecooler, the first aerial cooler, the second aerial cooler, third air
Heat exchanger constitutes the evaporator of cooling system between heat exchanger and the third level between heat exchanger, the second level between cooler, the first order, swollen
Swollen unit includes generator, high pressure expansion machine, low-pressure expansion machine, first-class heat exchanger and secondary heat exchanger, and generator, high pressure are swollen
Swollen machine and low-pressure expansion machine are sequentially connected successively, and the inlet end of first-class heat exchanger is connect with the outlet side of the energy storage device,
The outlet side of first-class heat exchanger and the inlet end of high pressure expansion machine connect, and secondary heat exchanger is arranged in the outlet side of high pressure expansion machine
Between the inlet end of low-pressure expansion machine.
2. a kind of compressed-air energy-storage system forcing precooling suitable for peak load regulation network band as described in claim 1, feature
It is：The energy storage device is air accumulator, and control is equipped between the outlet side of air accumulator and the inlet end of the first-class heat exchanger
Valve.
3. a kind of compressed-air energy-storage system forcing precooling suitable for peak load regulation network band as described in claim 1, feature
It is：It is changed between the condensate liquid input end of heat exchanger, the second level between the condensate liquid input end of the forecooler, the first order
The condensate liquid input end of heat exchanger passes through throttle valve and the condenser between the condensate liquid input end and the third level of hot device
Connection.
4. a kind of compressed-air energy-storage system forcing precooling suitable for peak load regulation network band as described in claim 1, feature
It is：The motor, the stage compressor, the split-compressor, the three-stage blower and level Four compression
Machine is coaxially connected.
5. a kind of compressed-air energy-storage system forcing precooling suitable for peak load regulation network band as described in claim 1, feature
It is：The generator, high pressure expansion machine and low-pressure expansion machine are coaxially connected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721704616.2U CN207795526U (en) | 2017-12-08 | 2017-12-08 | A kind of compressed-air energy-storage system forcing precooling suitable for peak load regulation network band |
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| CN201721704616.2U CN207795526U (en) | 2017-12-08 | 2017-12-08 | A kind of compressed-air energy-storage system forcing precooling suitable for peak load regulation network band |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488573A (en) * | 2019-01-07 | 2019-03-19 | 重庆大学 | A kind of advanced adiabatic compression air energy storage systems with electrical heat tracing sleeve |
| CN111504001A (en) * | 2019-01-31 | 2020-08-07 | 中石化石油工程技术服务有限公司 | Skid-mounted single-cycle mixed refrigeration natural gas liquefaction device and method |
| CN112229092A (en) * | 2020-10-19 | 2021-01-15 | 中国科学院理化技术研究所 | Liquid air energy storage cold and hot air combined supply system |
| CN112254361A (en) * | 2020-10-19 | 2021-01-22 | 中国科学院理化技术研究所 | Liquid air energy storage system adopting electric drive for air inlet precooling |
| CN112254369A (en) * | 2020-10-19 | 2021-01-22 | 中国科学院理化技术研究所 | Liquid air energy storage system adopting absorption type air inlet precooling |
| CN114322619A (en) * | 2022-03-07 | 2022-04-12 | 西子清洁能源装备制造股份有限公司 | Multi-tank molten salt energy storage system based on energy gradient utilization |
| CN116241436A (en) * | 2023-03-17 | 2023-06-09 | 中国电力工程顾问集团中南电力设计院有限公司 | Compressed air energy storage system and method for constant-parameter operation of all-weather compressor inlet |
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2017
- 2017-12-08 CN CN201721704616.2U patent/CN207795526U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488573A (en) * | 2019-01-07 | 2019-03-19 | 重庆大学 | A kind of advanced adiabatic compression air energy storage systems with electrical heat tracing sleeve |
| CN111504001A (en) * | 2019-01-31 | 2020-08-07 | 中石化石油工程技术服务有限公司 | Skid-mounted single-cycle mixed refrigeration natural gas liquefaction device and method |
| CN111504001B (en) * | 2019-01-31 | 2022-02-11 | 中石化石油工程技术服务有限公司 | Skid-mounted single-cycle mixed refrigeration natural gas liquefaction device and method |
| CN112229092A (en) * | 2020-10-19 | 2021-01-15 | 中国科学院理化技术研究所 | Liquid air energy storage cold and hot air combined supply system |
| CN112254361A (en) * | 2020-10-19 | 2021-01-22 | 中国科学院理化技术研究所 | Liquid air energy storage system adopting electric drive for air inlet precooling |
| CN112254369A (en) * | 2020-10-19 | 2021-01-22 | 中国科学院理化技术研究所 | Liquid air energy storage system adopting absorption type air inlet precooling |
| CN114322619A (en) * | 2022-03-07 | 2022-04-12 | 西子清洁能源装备制造股份有限公司 | Multi-tank molten salt energy storage system based on energy gradient utilization |
| CN116241436A (en) * | 2023-03-17 | 2023-06-09 | 中国电力工程顾问集团中南电力设计院有限公司 | Compressed air energy storage system and method for constant-parameter operation of all-weather compressor inlet |
| CN116241436B (en) * | 2023-03-17 | 2024-04-16 | 中国电力工程顾问集团中南电力设计院有限公司 | Compressed air energy storage system and method for constant-parameter operation of all-weather compressor inlet |
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