CN103016152A - Supercritical air energy storage system with novel process - Google Patents

Supercritical air energy storage system with novel process Download PDF

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CN103016152A
CN103016152A CN2012105185221A CN201210518522A CN103016152A CN 103016152 A CN103016152 A CN 103016152A CN 2012105185221 A CN2012105185221 A CN 2012105185221A CN 201210518522 A CN201210518522 A CN 201210518522A CN 103016152 A CN103016152 A CN 103016152A
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heat
storage
air
energy
heat exchanger
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CN103016152B (en
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许剑
陈海生
盛勇
刘金超
谭春青
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Institute of Engineering Thermophysics of CAS
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Institute of Engineering Thermophysics of CAS
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/16Mechanical energy storage, e.g. flywheels or pressurised fluids
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E70/00Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30Systems combining energy storage with energy generation of non-fossil origin

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Abstract

本发明公开了一种新型流程的超临界空气储能/释能系统,它采用电站低谷(低价)电将空气压缩至超临界状态(同时存储压缩热),利用膨胀机使空气降温同时回收膨胀功驱动一级压缩机提高系统效率,并利用已存储的冷能将超临界空气冷却、液化并存储(储能);在用电高峰,液态空气经过加压、吸热至超临界(同时回收冷能),并在进一步吸收压缩热或其他工业余热、太阳能集中供热等后通过涡轮驱动发电机发电(释能)。本发明的系统具有能量密度高、效率高、不受储能周期和地理条件限制、适用于各种电站(包括风能等可再生能源电站)、对环境友好、可回收中低温(热值)废热等优点。

The invention discloses a supercritical air energy storage/energy release system with a new process, which compresses the air to a supercritical state (storing compression heat at the same time) by using the power station's trough (low price) electricity, and uses an expander to cool down the air and recover it at the same time The expansion work drives the first-stage compressor to improve the system efficiency, and uses the stored cold energy to cool, liquefy and store the supercritical air (energy storage); at the peak of power consumption, the liquid air is pressurized and absorbs heat to supercritical (at the same time Recover cold energy), and after further absorbing compression heat or other industrial waste heat, solar central heating, etc., drive a generator to generate electricity (energy release) through a turbine. The system of the present invention has high energy density, high efficiency, is not limited by the energy storage period and geographical conditions, is applicable to various power stations (including wind power and other renewable energy power stations), is environmentally friendly, and can recover medium and low temperature (calorific value) waste heat Etc.

Description

A kind of supercritical air energy storage system of novel flow process
Technical field
The present invention relates to that the supercritical air energy storage of energy storage technical field, particularly a kind of novel flow process/releasing can system.
Background technique
The electric power energy storage technology is the important means of adjusting at present the electrical network peak valley, improving power system economy and stability, being one of extensive most important bottleneck that utilizes of unstable, the step renewable energy sources of restriction, also is the key technology of distributed energy and intelligent grid.At present existing electric power energy storage technology comprises pumped storage power station, pressurized air, storage battery, superconduction magnetic energy, flywheel and electric capacity etc.But owing to reasons such as capacity, energy storage cycle, energy density, efficiency for charge-discharge, life-span, operating cost, environmental protection, only draw water two kinds of power station and the pressurized air that in the large scale business system, have moved at present.
Conventional compression air energy-storage system is based on a kind of energy-storage system of gas turbine technology exploitation.At low power consumption, air pressure contractd to be stored in the gas storage chamber, and making electric energy conversion is that the interior of air can store; In peak of power consumption, high-pressure air discharges from gas storage chamber, enters gas-turbine combustion chamber and burns together with fuel, then drives turbine power generation.Compressed-air energy-storage system has that stored energy capacitance is large, the energy storage cycle is long, efficient is high (50%~70%) and the advantage such as specific investment cost less, but, conventional compression air energy-storage system is not an independently technology, it must support the use with turbine power plant, can not be fit to other types, such as power stations such as coal fired power plant, nuclear power station, wind energy and solar energy, be not suitable for especially China take coal fired power generation as main, do not advocate the energy strategy of gas fuel generating.And, compressed-air energy-storage system still relies on combustion of fossil fuels thermal source is provided, face on the one hand that fossil fuel is petered out and the threat of rise in price, its burning still produces the pollutants such as nitride, sulphide and carbon dioxide on the other hand, does not meet green (zero-emission), reproducible energy development requirement.More fatal is, because energy storage density is low, compressed-air energy-storage system also needs specific geographical conditions to build large-scale gas storage chamber, such as rock cavity, Yan Dong, abandoned mine etc., thereby has greatly limited the application area of compressed-air energy-storage system.
The subject matter that faces for solving conventional compression air energy-storage system, particularly to the Dependence Problem of gas turbine, recent years Chinese scholars carried out respectively ground compressed-air energy-storage system (SVCAES), with the compressed-air energy-storage system (AACAES) of backheat, air vapor combined cycle compressed-air energy-storage system (CASH) etc., make compressed-air energy-storage system substantially can break away from the combustion of fossil fuel thermal source.But owing to do not adopt the fossil fuel thermal source, the energy density of compressed-air energy-storage system is lower, has more highlighted large-scale gas storage chamber is relied on, and efficient is also not high enough simultaneously, must find rational solution, just can make the air energy-storage system obtain more extensive and effectively utilize.
In recent years, Institute of Engineering Thernophysics, Academia Sinica has developed supercritical air energy storage system, and it utilizes the character under the super critical condition of air, solves the major technique bottleneck that the energy storage of conventional compression air exists.But large occupation of land is many, efficient is not high problem that still there is the reservoir vessel volume in supercritical air energy storage system, the irreversible loss of single dependence throttle valve liquefaction is larger, system flow is reasonable not, and energy utilizes insufficient, causes system effectiveness lower (approximately only having about 65%).
The present invention proposes a kind of supercritical air energy storage of novel flow process/release can system, further promotes the performance of air energy-storage system, reduces simultaneously cost.
Summary of the invention
The objective of the invention is to disclose a kind of supercritical air energy storage of novel flow process/release can system, and it utilizes the system flow innovation, promotes the supercritical air energy storage system performance, is suitable for all kinds power station and electrical network energy storage.After using the combination of decompressor or decompressor and throttle valve, can effectively utilize the pressure energy of gas, realize the comprehensive cascade utilization of high-grade energy, be conducive to improve the system liquid rate, break away from extraneous cold and replenish, thereby obviously improve system effectiveness.
For achieving the above object, technical solution of the present invention is:
The supercritical air energy storage of novel flow process/release and system to comprise compressor bank, accumulation of heat/heat exchanger package, cold-storage/heat exchanger package, expansion unit, low-temperature storage tank, valve, cryopump, turbines, generator, driver element and many pipelines.One of remarkable difference of it and supercritical air energy storage system is to replace throttle valve with the combination of decompressor or decompressor and throttle valve, decompressor is by gear-box or coupling drive compression machine, remarkable increase system efficiency, application by accumulation of heat and cold-storage heat-exchanger group reduces materials consumption, reduces system cost.Another is significantly distinguished and is that accumulation of heat/heat exchanger package comprises two accumulation of heat/heat exchangers that are under the different working pressures at least, and store and take from heat cold between compression system, and for turbines; And cold-storage/heat exchanger package comprises two cold-storage/heat exchangers that are under the different working pressures at least, stores the cold of energy storage and exoergic process, by the different pressures design, can economical with materials, and reduce system cost.
Compressor bank of the present invention comprises at least two compressors, mutually connects or is integrated into whole multistage compressor, and at least one compressor is directly driven by the expansion unit, to improve system effectiveness.Enter or directly enter behind the outlet of expansion unit afterbody access cold-storage/heat exchanger throttle valve a little decrease temperature and pressure can realize liquefaction.Compressor and decompressor all can be piston type, centrifugal, axial flow and combined type, its type and number of units viewing system parameter and decide; Decompressor and compressor can be designed to coaxial combination, and also can connect by gearbox provides compressor power, thereby improves system effectiveness and Economy.System layout is as follows:
Each stage compressor links to each other with accumulation of heat/heat exchanger package respectively through pipeline; Design according to the pressure coupling can reduce materials consumption, reduces system cost.High-pressure air after the store compressed heat enters decompressor or is introduced into decompressor after entering the cooling of cold-storage heat-exchanger group through pipeline, pass through again throttle valve (also can cancel) after the decrease temperature and pressure and enter low-temperature storage tank through pipeline, be provided with valve, at least one cryopump in pipeline, valve is positioned at the cryopump upstream; Accumulation of heat/heat exchanger combination superheater interlinks with turbines respectively through pipeline.
Its workflow is: during energy storage, utilize drive unit drives combined type compression unit, to supercritical state, every grade the heat of compression is recovered and is stored in accumulation of heat/heat exchanger with a certain amount of air compressing; Then the air of certain parameter enters in cold-storage/heat exchanger package and cools off, pass through again expansion unit expansion decrease temperature and pressure after, further by throttle valve or directly change liquid air into by decompressor and enter low-temperature storage tank storage; When releasing energy, cryopump liquid towards air pressurized is to certain pressure, the high-pressure liquid air is warming up to supercritical state and reclaims cold energy in cold-storage/heat exchanger package, absorbing the heat of compression in accumulation of heat/heat exchanger package and superheater further heats up air, then enter the turbines acting, drive the generator generating.
Described air energy-storage system, its described driver element is the motor that drives with electrical network or conventional power plant trough-electricity, nuclear power, wind-powered electricity generation, solar electrical energy generation, biomass power generation, water power or tidal power generation one or more power supplys wherein.
Described air energy-storage system, its thermal energy storage process is rationed the power supply or the quality of power supply is enabled when not meeting internet access request in electric power low ebb, renewable energy sources; Exoergic process is enabled when peak of power consumption, electric power accident, renewable energy power generation fluctuation.
Described air energy-storage system, its compression process comprises at least one decompressor, is used for making the pressurized air decrease temperature and pressure to be convenient to liquefaction and recovery expansion work, improves system effectiveness.
Described air energy-storage system, the medium that stores in the low-temperature storage tank is liquid air or other liquefiable working medium, when working medium is not air, the air bag that the low pressure compressor import is connected with low-pressure turbine by a constant voltage transfiguration connects, the realization working medium circulation utilizes, and liquid refrigerant stores under normal pressure or band certain pressure situation.
Described air energy-storage system, its described accumulation of heat superheater is provided with pipeline, and this pipeline and extraneous thermal source interlink, and extraneous thermal source can be solar thermal collector, industrial exhaust heat and all kinds of used heat.Described waste heat, used heat are waste heat, the used heat of power plant, cement industry, iron and steel metallurgical industry, chemical industry; Waste heat, used heat can be stored in accumulation of heat/heat exchanger, also can be stored in the special-purpose accumulation of heat superheater.
Described air energy-storage system, its described compressor bank; When being multiple compressors, multiple compressors is coaxial series connection form or split axle parallel form; In the parallel form, each split axle and main driving axle are dynamically connected; The exhaust of each stage compressor all cools through corresponding accumulation of heat/heat exchanger.
Described air energy-storage system, its described turbines, the final stage gas turbine exhaust is near normal pressure; When being many turbo machines, many turbo machines are coaxial series connection form or split axle parallel form; In the parallel form, each split axle and main driving axle are dynamically connected; Corresponding accumulation of heat/heat exchanger heat temperature raising is all passed through first in the air inlet of each stage turbine, or continues to heat up through the accumulation of heat superheater.
Described air energy-storage system, its described compressor and decompressor all can be piston type, centrifugal, axial flow, screw type or combined type.
Described air energy-storage system, it is described when multiple compressors, many decompressors, and multiple compressors, many decompressors are distributed on a live axle or the many live axles, connect by gearbox.
Described air energy-storage system, the accumulation of heat form of its described accumulation of heat/heat exchanger package is one or more that sensible heat, latent heat or chemical reaction are pined for; The heat storage medium that adopts is water, paraffin, bio-oil, mineral-type crystalline hydrate salt, fuse salt, metal and alloy, organic fatty acid, stone, rock or concrete, and heat storage medium is stored in the thermally insulated container.
Described air energy-storage system, its described cold-storage/heat exchanger, it is Kelvin temperature unit that air is cooled to 81K-150K(K), be a kind of or combination in sensible heat cold-storage or the solid-liquid phase change cold-storage; The sensible heat cool storage medium that adopts is one or more in sealing ice hockey, sandstone, concrete, aluminium strip dish or other metallics; The solid-liquid phase change cool storage medium is ammonia and the aqueous solution, salts solution, alkanes, olefines material and the compound thereof of solid-liquid phase change temperature between 81K~273K, one or more in alcohols and the aqueous solution thereof, and cool storage medium is stored in the thermally insulated container; Air in cold-storage/heat exchanger with cool storage medium direct contact heat transfer or non-direct contact heat transfer; During energy storage, cold-storage/heat exchanger further cools off air is convenient to liquefaction, and when releasing energy, cold-storage/heat exchanger reclaims and store the cold in the high-pressure liquid atmosphere temperature rising process.
Described air energy-storage system, its described low-temperature storage tank is Dewar storage tank or low temperature storing tank, liquid air stores under atmospheric pressure or under pressure power situation.
Described air energy-storage system during its energy storage, is regulated energy storage capacity by control first order compressor air inflow.Described air energy-storage system, its described control first order compressor air inflow is by regulating compressor load, valve opening, driving rotating speed, start-stop Partial shrinkage machine or regulating the control that pressure ratio realizes air inflow.When it releases energy, regulate generating capacity by control liquid air flow.
The invention has the advantages that: the decompressor that replaces throttle valve is coaxial or by the interconnected transmission of gear-box with compressor, energy storage efficiency than supercritical air system improve, system cost reduction about 10%, have wide prospect of the application.
Description of drawings
Fig. 1 is supercritical air energy storage system embodiment 1 structural representation of novel flow process of the present invention;
Fig. 2 is supercritical air energy storage system embodiment 2 structural representations of novel flow process of the present invention.
Embodiment
For making purpose of the present invention, technological scheme and advantage clearer, referring to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
The supercritical air energy storage system of novel flow process of the present invention, adopt power station low ebb (at a low price) electric energy with air compressing to supercritical state (simultaneously store compressed heat), then utilizing the expansion unit to make the air cooling-down step-down reclaim simultaneously expansion work raises the efficiency, decompressor is coaxial or interconnected by gear-box with compressor in this process, help to raise the efficiency the reduction cost, utilize the cold energy of having stored with pressure-air cooling, liquefaction and storage (energy storage); In peak of power consumption, the liquid air pressurization is absorbed heat to supercritical state (cold energy in the liquid air is recovered storage simultaneously), and driving generator generating (releasing energy) by turbines after the heat of compression of further absorption storage, some industrial waste heats can be recovered to improve system effectiveness in this process.
Embodiment:
Fig. 1 is the supercritical air energy storage system embodiment 1 of novel flow process of the present invention.Comprise compressor units C1, C2, accumulation of heat/heat exchanger package 2,5, expansion unit E1, E2, cold-storage/heat exchanger package 8,10, low-temperature storage tank 15, valve 13,17, cryopump 19, turbines T1, T2, generator 29, drive motor 32, pipeline A, 1,3,4,6,7,9,11,12,14,16,18,20,21,22,23,24,25,27,28 etc.
Drive motor 32 is affixed with the total transmission shaft of compressor bank C1, C2, and generator 29 is affixed with the total transmission shaft of turbines T1, T2.Compressor bank C1, C2 link to each other with accumulation of heat/heat exchanger package 2,5 respectively through pipeline 1,3,4,6.Low pressure compressor C1 entrance connects air.Through the supercritical air of accumulation of heat/heat exchanger 5 through pipeline 6,7,9,11 by cold-storage/heat exchanger package 8,10 and expansion unit E1, E2 decrease temperature and pressure, again through throttle valve 13 liquefaction.Accumulation of heat/heat exchanger package 2,5 links to each other with expansion unit T1, T2 respectively through pipeline 22,23,24,25,27 with accumulation of heat superheater 26, and the gas outlet of low-pressure turbine T1 leads to atmosphere.Accumulation of heat superheater 26 through pipeline 30,31 and extraneous thermal source interlink.
During energy storage, utilize driver element 32 drive compression unit C1, C2, to supercritical state, every grade the heat of compression is recovered and is stored in accumulation of heat/heat exchanger package 2,5 the corresponding tank body with a certain amount of air compressing; Then the air of certain parameter enters cooling in cold-storage/heat exchanger package 8,10, after passing through again expansion unit E1, E2 expansion decrease temperature and pressure, further through the cold-storage heat-exchanger group or directly by throttle valve 13 or directly change liquid air into by decompressor and enter low-temperature storage tank storage 15; When releasing energy, cryopump 19 liquid towards air pressurized are to certain pressure, the high-pressure liquid air is warming up to supercritical state and reclaims cold energy in cold-storage/heat exchanger package 8,10, accumulation of heat/heat exchanger package 2,5 and superheater 26 in absorb the heat of compression air further heated up, then enter turbines T1, T2 acting, drive generator 29 generatings.
Fig. 2 is the supercritical air energy storage system embodiment 2 of novel flow process of the present invention.Its structure is basic identical with embodiment 1, but decompressor all is positioned at before cold-storage/heat exchanger 8,10, enters through the Cryogenic air behind the expansion unit to enter throttle valve 13 after cold-storage/heat exchanger package cooling and further liquefy.Other workflows are similar with embodiment 1.
The above only is preferred embodiment of the present invention, does not therefore limit protection scope of the present invention.

Claims (10)

1.一种新型流程超临界空气储能/释能系统,包括动力驱动单元(32)、压缩机组(C1、C2)、低温储罐(15)、低温泵(19)、涡轮机组(T1、T2)、发电机(29),其特征在于:1. A new process supercritical air energy storage/energy release system, including power drive unit (32), compressor unit (C1, C2), cryogenic storage tank (15), cryopump (19), turbine unit (T1, T2), generator (29), is characterized in that: 所述系统还包括蓄热/换热器组(2、5),所述蓄热/换热器组(2、5)与压缩机组(C1、C2)和涡轮机组(T1、T2)相配套,至少包括两个蓄热/换热器,分别处于不同的工作压力下,系统储能时储存取自压缩机组(C1、C2)间冷的热量和末级排气热量,系统释能时用以加热涡轮机组(T1、T2)的工作气体;The system also includes a heat storage/heat exchanger group (2, 5), which is matched with a compressor group (C1, C2) and a turbine group (T1, T2) , including at least two heat storage/heat exchangers, which are under different working pressures. When the system stores energy, it stores the heat from the intercooler of the compressor unit (C1, C2) and the exhaust heat of the final stage. When the system releases energy, it uses To heat the working gas of the turbine units (T1, T2); 所述系统还包括蓄冷/换热器组(8、10),所述蓄冷/换热器组(8、10)与膨胀机组(E1、E2)和涡轮机组(T1、T2)相配套,至少包括两个蓄冷/换热器,分别处于不同的工作压力下,储存系统储能和释能过程的冷量;The system also includes a cold storage/heat exchanger group (8, 10), and the cold storage/heat exchanger group (8, 10) is matched with the expansion unit (E1, E2) and the turbine unit (T1, T2), at least It includes two cold storage/heat exchangers, which are respectively under different working pressures, to store the cooling capacity of the energy storage and energy release process of the system; 所述系统还包括膨胀机组(E1、E2),系统储能时所述压缩机组(C1、C2)将空气压缩至超临界状态后,通过所述膨胀机组(E1、E2)或所述膨胀机组(E1、E2)与节流阀(13)的组合将超临界空气降温降压至液态,液态空气储存至所述低温储罐(15)中;所述膨胀机组(E1、E2)与压缩机组(C1、C2)中的至少一台压缩机同轴连接,或通过变速箱(33)连接提供动力,或为其他设备供电或提供动力;The system also includes an expansion unit (E1, E2). When the system stores energy, the compressor unit (C1, C2) compresses the air to a supercritical state, and then passes through the expansion unit (E1, E2) or the expansion unit The combination of (E1, E2) and the throttle valve (13) lowers the temperature and pressure of the supercritical air to a liquid state, and the liquid air is stored in the low-temperature storage tank (15); the expansion unit (E1, E2) and the compressor unit At least one of the compressors in (C1, C2) is connected coaxially, or is connected to provide power through a gearbox (33), or supplies power or provides power to other equipment; 所述系统分为储能子系统和释能子系统:所述储能子系统中,所述驱动单元(32)、压缩机组(C1、C2)、蓄热/换热器组(2、5)、膨胀机组(E1、E2)、蓄冷/换热器组(8、10)、低温储罐(15)经一管线组(1、3、4、6、7、9、11、12、14)依次顺序联通;所述释能子系统中,所述低温储罐(15)、调节阀(17)、低温泵(19)、蓄冷/换热器组(8、10)、蓄热/换热器组(2、5)、涡轮机组(T1、T2)、发电机(29)经另一管线组(16、18、20、21、22、23、24、25、27、28)依次顺序联通;The system is divided into an energy storage subsystem and an energy release subsystem: in the energy storage subsystem, the drive unit (32), compressor unit (C1, C2), heat storage/heat exchanger group (2, 5 ), expansion unit (E1, E2), cold storage/heat exchanger group (8, 10), cryogenic storage tank (15) through a pipeline group (1, 3, 4, 6, 7, 9, 11, 12, 14 ) are connected sequentially; in the energy release subsystem, the cryogenic storage tank (15), regulating valve (17), cryogenic pump (19), cold storage/heat exchanger group (8, 10), heat storage/exchange Heater group (2, 5), turbine group (T1, T2), generator (29) through another pipeline group (16, 18, 20, 21, 22, 23, 24, 25, 27, 28) in sequence Unicom; 所述压缩机组(C1、C2)包括至少两台压缩机,单台压比在2~4之间,相互串联或集成为整体多级压缩机组,其中第一级压缩机(C1)的进气口接空气源(A),上一级压缩机出口经管线穿过对应压力的蓄热/换热器(2)后与下一级压缩机的进气口相连,最后一级压缩机的出气口经管线(4)穿过所述蓄热/换热器组的高压蓄热/换热器(5),先后进入膨胀机组(E1、E2)和蓄冷/换热器组(8、10)后经过管线(12、14)进入低温储罐(15);The compressor unit (C1, C2) includes at least two compressors, each with a pressure ratio between 2 and 4, which are connected in series or integrated into an overall multi-stage compressor unit, wherein the intake air of the first-stage compressor (C1) The port is connected to the air source (A), the outlet of the upper stage compressor passes through the heat storage/heat exchanger (2) of corresponding pressure through the pipeline, and then connects with the inlet port of the next stage compressor, and the outlet of the last stage compressor The gas port passes through the high-pressure heat storage/heat exchanger (5) of the heat storage/heat exchanger group through the pipeline (4), and enters the expansion unit (E1, E2) and the cold storage/heat exchanger group (8, 10) successively Then enter the cryogenic storage tank (15) through pipelines (12, 14); 所述涡轮机组(T1、T2)包括至少一台涡轮机,单台压比在2~6之间,相互串联或集成为整体多级涡轮机组,所述低温储罐(15)中的液态空气经管线依次通过调节阀(17)、低温泵(19)、蓄冷/换热器组(10、8)、蓄热/换热器组(5、2)转变为超临界状态的空气后通入涡轮机组,各级涡轮机中,上一级涡轮机的出气口经管线穿过所述蓄热/换热器组中的一个吸热后与下一级涡轮机的进气口相联通,最后一级涡轮机(T1)的出气口通大气,特别地,在涡轮机组的某些级,上一级涡轮机出气经过所述蓄热/换热器组(5、2)中的一个后还经过一个蓄热过热器(26)进入下一级涡轮机进口,进一步提高温度,增加做功能力。The turbine units (T1, T2) include at least one turbine with a single pressure ratio between 2 and 6, which are connected in series or integrated into an overall multi-stage turbine unit, and the liquid air in the cryogenic storage tank (15) is passed through The pipeline passes through the regulating valve (17), the cryopump (19), the cold storage/heat exchanger group (10, 8), and the heat storage/heat exchanger group (5, 2) in sequence to transform into supercritical air and then enters the turbine group, among the turbines at all levels, the gas outlet of the upper-stage turbine passes through a pipeline to absorb heat through one of the heat storage/heat exchanger groups and then communicates with the air inlet of the next-stage turbine, and the last-stage turbine ( The air outlet of T1) is open to the atmosphere, especially in some stages of the turbine unit, the exhaust gas of the upper stage turbine passes through one of the heat storage/heat exchanger groups (5, 2) and then passes through a heat storage superheater (26) Enter the inlet of the next-stage turbine to further increase the temperature and increase the working capacity. 2.根据权利要求1所述的空气储能/释能系统,其特征在于:所述膨胀机组(E1、E2)包括至少一台膨胀机,用于使压缩空气降温降压便于液化并回收膨胀功,提高系统效率;所述膨胀机组(E1、E2)可通过变速箱(33)直接驱动所述压缩机组(C1、C2)中的某一级;所述驱动单元(32)与压缩机组(C1、C2)的传动轴固接;所述发电机(29)与涡轮机组(T1、T2)的传动轴固接。2. The air energy storage/energy release system according to claim 1, characterized in that: the expansion unit (E1, E2) includes at least one expander, which is used to cool down the compressed air to facilitate liquefaction and recycle expansion work, improving system efficiency; the expansion unit (E1, E2) can directly drive a certain stage in the compressor unit (C1, C2) through the gearbox (33); the drive unit (32) and the compressor unit ( The drive shafts of C1, C2) are fixedly connected; the drive shafts of the generator (29) and the turbo-sets (T1, T2) are fixedly connected. 3.根据上述权利要求所述的空气储能/释能系统,其特征在于:所述低温储罐(15)为杜瓦储罐或低温储槽,储存的介质是液态空气或其他可液化工质,当工质不为空气时,涡轮机组(T1、T2)的出气口管线(28)和压缩机组(C1、C2)的进气口管线(A)通过一个恒压变容的气囊连接,实现工质循环利用,液态工质在常压或带一定压力状况下储存。3. The air energy storage/energy release system according to the above claims, characterized in that: the cryogenic storage tank (15) is a Dewar storage tank or a cryogenic storage tank, and the storage medium is liquid air or other liquefiable chemical When the working medium is not air, the outlet pipeline (28) of the turbine unit (T1, T2) and the inlet pipeline (A) of the compressor unit (C1, C2) are connected through a constant pressure variable capacity air bag, To realize the recycling of working fluid, the liquid working fluid is stored under normal pressure or with a certain pressure. 4.根据上述权利要求所述的空气储能/释能系统,其特征在于:所述蓄热/换热器组(2、5)为绝热保温容器,蓄热介质储存在容器中,超临界空气在其中与蓄热介质直接接触换热或非直接接触换热,蓄热方式为显热、潜热蓄热中的一种或组合;储能时,蓄热/换热器组(2、5)回收并储存压缩机产生的压缩热,释能时,加热进各级涡轮机前的压缩空气。4. The air energy storage/energy release system according to the above claims, characterized in that: the heat storage/heat exchanger group (2, 5) is a thermal insulation container, and the heat storage medium is stored in the container, and the supercritical The air is in direct contact with the heat storage medium for heat exchange or non-direct contact heat exchange, and the heat storage method is one or a combination of sensible heat and latent heat storage; when storing energy, the heat storage/heat exchanger group (2, 5 ) Recover and store the compression heat generated by the compressor, and heat the compressed air before entering the turbines at all levels when releasing energy. 5.根据上述权利要求所述的空气储能/释能系统,其特征在于:所述蓄冷/换热器组(8、10)为绝热保温容器,蓄冷介质存储在容器中,超临界空气或液态空气在其中与蓄冷介质直接接触换热或非直接接触换热,其蓄冷形式是显热蓄冷或固液相变蓄冷中的一种或组合;储能时,蓄冷/换热器(8、10)将超临界空气冷却至81K-150K,释能时,回收并储存液态空气升温过程中释放的冷量。5. The air energy storage/energy release system according to the above claims, characterized in that: the cold storage/heat exchanger group (8, 10) is a thermal insulation container, the cold storage medium is stored in the container, supercritical air or The liquid air is in direct contact with the cold storage medium for heat exchange or non-direct contact heat exchange, and the cold storage form is one or a combination of sensible heat storage or solid-liquid phase change cold storage; when storing energy, the cold storage/heat exchanger (8, 10) Cool the supercritical air to 81K-150K, and when the energy is released, recover and store the cold energy released during the heating process of the liquid air. 6.根据上述权利要求所述的空气储能/释能系统,其特征在于,其工作流程为:储能时,利用驱动单元(32)驱动压缩机组(2、5),将一定量的空气压缩至超临界状态,压缩热被回收并存储在蓄热/换热器组(2、5)中;压缩空气先后进入膨胀机组(E1、E2)和蓄冷/换热器组(8、10)中降温降压并回收膨胀功,低温空气通过节流阀(13)后完全或绝大部分液化,液态空气进入低温储罐(15)存储;释能时,低温泵(19)对液态空气加压至超临界压力,高压液态空气在蓄冷/换热器组(8、10)中升温至超临界状态并回收冷能,在蓄热/换热器组(2、5)中吸收压缩热将超临界空气加热,或再经过一个蓄热过热器(26)进一步升温,进入涡轮机组(T1、T2)膨胀做功,带动发电机(29)发电。6. The air energy storage/energy release system according to the above claims, characterized in that its working process is as follows: when storing energy, the drive unit (32) is used to drive the compressor unit (2, 5), and a certain amount of air Compressed to a supercritical state, the compression heat is recovered and stored in the heat storage/heat exchanger group (2, 5); the compressed air enters the expansion unit (E1, E2) and the cold storage/heat exchanger group (8, 10) successively The low-temperature air is completely or mostly liquefied after passing through the throttle valve (13), and the liquid air enters the low-temperature storage tank (15) for storage; when the energy is released, the cryogenic pump (19) energizes the liquid air pressure to supercritical pressure, the high-pressure liquid air is heated to a supercritical state in the cold storage/heat exchanger group (8, 10) and the cold energy is recovered, and the heat of compression is absorbed in the heat storage/heat exchanger group (2, 5). The supercritical air is heated, or the temperature is further raised through a thermal storage superheater (26), and enters the turbine unit (T1, T2) to expand and perform work, driving the generator (29) to generate electricity. 7.根据上述权利要求所述的空气储能/释能系统,其特征在于:所述驱动单元(32),是以电网或常规电站低谷电、核电、风电、太阳能发电、生物质发电、水电或潮汐发电其中的一种或多种电源带动的电机。7. The air energy storage/energy release system according to the above claims, characterized in that: the drive unit (32) is based on grid or conventional power station low-peak power, nuclear power, wind power, solar power, biomass power, hydropower Or a motor driven by one or more power sources in tidal power generation. 8.根据上述权利要求所述的空气储能/释能系统,其特征在于:所述蓄热过热器(26)还设有与外界热源相联通的管线(30、31),外界热源为太阳能集热器、工业余热或各种废热,可以增加系统出功。8. The air energy storage/energy release system according to the above claims, characterized in that: the heat storage superheater (26) is also provided with pipelines (30, 31) communicating with an external heat source, and the external heat source is solar energy Heat collectors, industrial waste heat or various waste heat can increase the power output of the system. 9.根据上述权利要求所述的空气储能/释能系统,其特征在于:所述蓄热/换热器组(2、5),采用蓄热介质是水、石蜡、生物质油、无机类结晶水合盐、熔融盐、金属及其合金、有机类脂肪酸、石头、岩石或混凝土。9. The air energy storage/energy release system according to the above claims, characterized in that: the heat storage/heat exchanger group (2, 5) uses water, paraffin, biomass oil, inorganic Crystalline hydrated salts, molten salts, metals and their alloys, organic fatty acids, stone, rock or concrete. 10.根据上述权利要求所述的空气储能/释能系统,其特征在于:所述蓄冷/换热器组(8、10),采用的显热蓄冷介质,是密封冰球、沙石子、混凝土、铝带盘或其它金属物质中的一种或几种;固液相变蓄冷介质,是固液相变温度在81K~273K之间的氨及其水溶液、盐类水溶液、烷烃类、烯烃类物质及其化合物,醇类及其水溶液中的一种或几种。10. The air energy storage/energy release system according to the above claims, characterized in that: the sensible heat storage medium used in the cold storage/heat exchanger groups (8, 10) is sealed ice balls, sand, gravel, One or more of concrete, aluminum tape, or other metal substances; solid-liquid phase change cold storage medium, which is ammonia and its aqueous solution, salt solution, alkanes, and olefins with a solid-liquid phase transition temperature between 81K and 273K One or more of substances and their compounds, alcohols and their aqueous solutions.
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