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CN206582068U - A kind of non-afterburning compressed air electricity generation system of photo-thermal combined type - Google Patents

A kind of non-afterburning compressed air electricity generation system of photo-thermal combined type Download PDF

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Publication number
CN206582068U
CN206582068U CN201621219279.3U CN201621219279U CN206582068U CN 206582068 U CN206582068 U CN 206582068U CN 201621219279 U CN201621219279 U CN 201621219279U CN 206582068 U CN206582068 U CN 206582068U
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air
photo
compressed air
generation system
electricity generation
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梅生伟
薛小代
陈来军
卢强
陈晓弢
李�瑞
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Tsinghua University
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Tsinghua University
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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
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • Y02E10/46Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines

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Abstract

The utility model is related to compressed-air energy storage field, discloses a kind of non-afterburning compressed air electricity generation system of photo-thermal combined type, including:Solar energy hot cell, gas storage unit and high rate turbine generator unit;Solar energy hot cell includes low-temperature reservoir tank, high temperature oil storage tank, heat-conducting medium, pump, groove type heat collector, heater and oil gas heat exchanger.The non-afterburning compressed air electricity generation system of photo-thermal combined type that the utility model is provided, solar groove type heat collector and heater is used to provide high temperature heat source for pressure-air, the problem of avoiding the cost height of compensation combustion type compressed air energy storage technology presence in the prior art, have carbon emission, rely on natural gas, the pollution to environment is reduced, cost is saved.In addition, while using solar energy heat-storage, can also be heated by heater to heat-conducting medium, and then the heating to pressure-air is realized by oil gas heat exchanger, both improved system and released energy efficiency, stable operation of the system under different operating modes can be met again.

Description

A kind of non-afterburning compressed air electricity generation system of photo-thermal combined type
Technical field
The utility model is related to compressed-air energy storage field, more particularly to a kind of non-afterburning compressed air of photo-thermal combined type Electricity generation system.
Background technology
With increasingly sharpening for environmental problem and flourishing for renewable energy power generation, regenerative resource how is tackled such as Fluctuation and uncertainty that wind-powered electricity generation, photo-voltaic power supply are produced, the outstanding problem as current electric power industry development.Energy storage technology is Solve this very corn of a subject technology.
Existing energy storage mode mainly has:Water-storage and Caes.Water-storage is to realize extensive energy storage Major way, shared installed capacity is maximum in international energy storage market, but due to its power station build a station to geology, manage bar Part, water source etc. require harsh, and power station is built a station and is often limited, therefore compressed-air energy storage starts to be widely studied.Compressed air is stored up The operation principle of energy electricity generation system and water-storage are similar, when the electricity consumption of power system is at a low ebb, and system stored energy is utilized Electricity more than needed in system, driven compressor air compressor is stored in energy in the form of compressed air with compressed air In air storage chamber;When power system power load peaks generated energy deficiency, system releases energy, and air storage chamber is by gas storage space Compressed air is discharged, and is driven electrical power generators, is completed electric energy-air potential energy-electricity transformation of energy.Compressed-air energy storage To geographical and geological conditions without particular/special requirement, cavern, barren beach, abandoned mine, or even seabeach, seabed can, gas storage can be adopted With the buried underground of pipe line steel, hardly land occupation, it would however also be possible to employ the high pressure storage tank of steel is empty as the storage of gases at high pressure Between;Energy storage is carried out using the air of nature as working medium, air-breathing and exhaust all in ambient air, will not bring pollution and raw State problem, is a kind of energy storage mode for really being able to realize that zero-emission is environment-friendly.
In the prior art, in order to improve the conversion ratio of electric energy, compressed-air energy-storage system also includes interstage cooler, natural Gas combustion-compensating device and heat-storing device, in thermal energy storage process, air is carried out multi-stage compression, the compression that compressed gas is produced by compressor Normal temperature compressed air by being stored in air storage chamber by heat after cascade EDFA;During system releases energy, compressed air enters Natural gas afterburning chamber, the heated rear compressed air for forming HTHP enters steam turbine and drives electrical power generators.Prior art Have that cost is high, heat accumulation effect is poor, produce the problem of carbon emission pollutes environment using natural gas afterburning.
Utility model content
(1) technical problem to be solved
The purpose of this utility model is to provide a kind of non-afterburning compressed air electricity generation system of photo-thermal combined type, existing to solve Cost present in compensation combustion type compressed air energy storage technology is high, the problem of have carbon emission, rely on natural gas.
(2) technical scheme
In order to solve the above-mentioned technical problem, the utility model, which provides a kind of non-afterburning compressed air of photo-thermal combined type and generated electricity, is System, including:Solar energy hot cell, gas storage unit and high rate turbine generator unit;
The solar energy hot cell include low-temperature reservoir tank, high temperature oil storage tank, heat-conducting medium, pump, groove type heat collector, plus Hot device and oil gas heat exchanger;It is connected between the output end of the low-temperature reservoir tank and the groove type heat collector input described Pump, for the heat-conducting medium to be pumped into the groove type heat collector from the low-temperature reservoir tank, the groove type heat collector profit With heat-conducting medium described in solar energy heating;Connect between the input of the output end of the groove type heat collector and the high temperature oil storage tank Heater is connect, oil gas heat exchanger is connected between the input of the low-temperature reservoir tank and the output end of the high temperature oil storage tank;Institute The liquid passage inlet for stating oil gas heat exchanger connects the output end of the gas storage unit, the high pressure for heating the gas storage unit output Air, the pressure-air after heating inputs the high rate turbine generator unit and generated electricity.
Wherein, the gas storage unit includes motor, air compressor and air storage chamber;The air compressor passes through described Motor drives, and the output end of the air compressor connects the import of the air storage chamber.
Wherein, the inlet and outlet of the air storage chamber sets control valve respectively, for control input and output air storage chamber The flow of gas.
Wherein, the air compressor uses two-stage compression, and every grade of compression outlet is equipped with cooler, for cooling down compression Gas afterwards.
Wherein, the high rate turbine generator unit includes air expansion turbine, high-speed power generation unit and electronic power conversion Device, the electronic power convertor is used for the conversion that high-frequency alternating current is realized to AC-DC-exchange.
Wherein, the high rate turbine generator unit includes control device.
Wherein, the high rate turbine generator unit includes electronic power convertor control device, the electronic power conversion Device control device adjusts control parameter according to the rotating speed of turbine under different operating modes, for the electric energy matter for ensureing to export after frequency conversion Amount.
Wherein, it is equipped with nitrogen protection device in the low-temperature reservoir tank and the high temperature oil storage tank.
Wherein, the low-temperature reservoir tank and the high temperature oil storage tank appearance are surrounded by insulation material.
(3) beneficial effect
The non-afterburning compressed air electricity generation system of photo-thermal combined type that the utility model is provided, by using solar groove type collection Hot device and heater to provide high temperature heat source for pressure-air, it is to avoid compensation combustion type compressed air energy storage technology is deposited in the prior art Cost it is high, have carbon emission, rely on natural gas the problem of, reduce the pollution to environment, save cost.In addition, passing through Groove type heat collector and heater are set simultaneously so that while using solar energy heat-storage, heat conduction can be also situated between by heater Matter is heated, and then realizes the heating to pressure-air by oil gas heat exchanger, had both been improved system and has been released energy efficiency, and can expire again Stable operation of the pedal system under different operating modes.
Brief description of the drawings
Fig. 1 is the non-afterburning compressed air electricity generation system schematic diagram of photo-thermal combined type;
Fig. 2 is solar energy optical-thermal cell schematics;
In figure, 1, motor;2nd, air compressor;3rd, high pressure tank;4th, oil gas heat exchanger;5th, solar energy optical-thermal list Member;6th, high rate turbine generator unit;7th, the first control valve;8th, the second control valve;9th, the 3rd control valve;10th, the 4th control valve; 51st, low-temperature reservoir tank;52nd, pump;53rd, groove type heat collector;54th, heater;55th, high temperature oil storage tank.
Embodiment
With reference to the accompanying drawings and examples, embodiment of the present utility model is described in further detail.Below Example is used to illustrate the utility model, but is not limited to scope of the present utility model.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly Connection;Can be mechanical connection or electrical connection;Can be joined directly together, can also be indirectly connected to by intermediary, It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition Concrete meaning of the language in the utility model.
Fig. 1 is the non-afterburning compressed air electricity generation system schematic diagram of photo-thermal combined type, and Fig. 2 is heat reservoir schematic diagram.This reality With the non-afterburning compressed air electricity generation system of the photo-thermal combined type of new offer, including solar energy hot cell 5, gas storage unit and height Fast turbine power generation unit 6.As depicted in figs. 1 and 2, solar energy hot cell 5 includes low-temperature reservoir tank 51, high temperature oil storage tank 55th, heat-conducting medium, pump 52, groove type heat collector 53, heater 54 and oil gas heat exchanger 4.Low-temperature reservoir tank 51 is used to hold low temperature Heat-conducting medium, the heat-conducting medium in such as the present embodiment uses conduction oil.The output end and groove type heat collector of low-temperature reservoir tank 51 Pump 52 is connected between 53 inputs, when needing to carry out energy storage to solar energy hot cell 5, pump 52 is by low temperature conduction oil from low temperature Oil storage tank 51 is pumped into groove type heat collector 53, and groove type heat collector 53 is paramount by low temperature heat-conducting oil heating using the solar energy being collected into Temperature, then high temperature heat conductive oil is pressed into high temperature oil storage tank 55 by pump 52.Oil circuit is flowed to as shown in filled arrows in figure.In slot type Heater 54 is also associated between the output end of heat collector 53 and the input of high temperature oil storage tank 55, heater 54 is added using electricity Hot device, when sunlight irradiation degree is less than design load or rainy weather, heat accumulation process is needed to start electric heater, and conduction oil is entered It is stored in after row heating in high temperature oil storage tank 55.Between the input of low-temperature reservoir tank 51 and the output end of high temperature oil storage tank 55 Oil gas heat exchanger 4 is connected, oil gas heat exchanger 4 has gas circuit and oil circuit two passes, high-temperature heat-conductive is realized in oil gas heat exchanger 4 Heat conduction between oil and pressure-air.The liquid passage inlet of oil gas heat exchanger 4 connects the output end of gas storage unit, for heating The pressure-air of gas storage unit output, the pressure-air input high rate turbine generator unit 6 after heating is generated electricity, air flow As shown in hollow arrow in Fig. 1.
The non-afterburning compressed air electricity generation system of photo-thermal combined type that the utility model is provided, by using solar groove type collection Hot device and heater to provide high temperature heat source for pressure-air, it is to avoid compensation combustion type compressed air energy storage technology is deposited in the prior art Cost it is high, have carbon emission, rely on natural gas the problem of, reduce the pollution to environment, save cost.In addition, passing through Groove type heat collector and heater are set simultaneously so that while using solar energy heat-storage, heat conduction can be also situated between by heater Matter is heated, and then realizes the heating to pressure-air by oil gas heat exchanger, had both been improved system and has been released energy efficiency, and can expire again Stable operation of the pedal system under different operating modes.
Wherein, gas storage unit includes motor 1, air compressor 2 and air storage chamber.Air compressor 2 is driven by motor 1 It is dynamic, using abandoning wind-powered electricity generation, abandoning photoelectricity or low ebb electric drive, air is compressed, exported in the form of pressure-air;Air compresses The output end of machine 2 connects the import of air storage chamber, and air storage chamber can be used in high pressure tank 3 or other forms, the present embodiment High pressure tank 3.The liquid passage inlet of the outlet connection oil gas heat exchanger 4 of high pressure tank 3, pressure-air is through high-temperature heat-conductive After oil heating, it is changed into HTHP air, exports output from the gas circuit of oil gas heat exchanger 4, and input to connected high speed Turbine power generation unit 6, progress is released and can generated electricity.
Wherein, it is provided with the import of high pressure tank 3 for controlling the first control valve 7 into tolerance, exit is set The second control valve 8 for controlling output tolerance is equipped with, by setting control valve so that high pressure tank internal environment is easier Control.
Wherein, air compressor 2 uses two-stage compression, and every grade of compression outlet is equipped with cooler, for cooling down after compression Gas.When air is after first order compressor compresses, the cooler carried by compressor is to the gas cooling after compression, so After enter back into the second level compression, after being cooled down through cooler, realize that pressure-air enters air storage chamber with normal temperature.By using two grades of pressures Contracting, improves air compression efficiency, saves the energy, adiabatic compression air energy storage has been broken away from the dependence to high temperature compressor.
Wherein, high rate turbine generator unit 6 includes air expansion turbine, high-speed power generation unit and electronic power convertor, The HTHP air input air expansion turbine exported from oil gas heat exchanger 4, the operating generating of high-speed power generation unit can be driven by releasing, High-frequency alternating current is rectified into direct current by electronic power convertor, then accesses electricity after being transformed to 50Hz industrial-frequency alternating currents through inverter Net.The application is engaged using high-speed power generation unit and electronic power convertor, is not only solved and is mechanically connected in the prior art The problem of bringing big operation noise and poor reliability, and cause the electric energy flexibility sent to access power network, greatly improve generating The friendly of system access power network.
Wherein, the high rate turbine generator unit 6 includes control device, to realize the stable fortune under different operating modes Turn.
Wherein, the high rate turbine generator unit 6 includes electronic power convertor control device, the electronic power conversion Device control device adjusts control parameter according to the rotating speed of turbine under different operating modes, for the electric energy matter for ensureing to export after frequency conversion Amount, it is ensured that the quality of power supply of output meets grid-connected requirement.In addition, between high rate turbine generator unit 6 and oil gas heat exchanger 4 also The 3rd control valve 9 is provided with, the flow of the HTHP air for controlling to enter turbine.
Wherein, the temperature into the compressed air of high-speed engine group after heat exchange is 250 DEG C~300 DEG C.Air storage chamber Pressure is not more than 8.8Mpa.In oil gas heat exchanger 4 and at a high speed in heat storage units downstream, i.e. oil gas heat exchanger 4 and high temperature oil storage tank Between 55, the 4th control valve 10 is additionally provided with, the flow of the conduction oil for controlling to enter oil gas heat exchanger 4.
Wherein, nitrogen protection device is provided with low-temperature reservoir tank and the high temperature oil storage tank, for preventing conduction oil by oxygen Change, prolonging service life of heat transfer oil.Low-temperature reservoir tank and high temperature oil storage tank appearance are surrounded by insulation material, and 24 hours oil tanks can be achieved Interior temperature change is no more than ± 1 DEG C, it is ensured that the stabilization of environment in oil tank.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc. should be included in the utility model Protection domain within.

Claims (9)

1. a kind of non-afterburning compressed air electricity generation system of photo-thermal combined type, including:Solar energy hot cell, gas storage unit and high speed Turbine power generation unit, it is characterised in that
The solar energy hot cell includes low-temperature reservoir tank, high temperature oil storage tank, heat-conducting medium, pump, groove type heat collector, heater And oil gas heat exchanger;The pump is connected between the output end of the low-temperature reservoir tank and the groove type heat collector input, is used It is pumped into by the heat-conducting medium from the low-temperature reservoir tank in the groove type heat collector, the groove type heat collector utilizes the sun Can the heating heat-conducting medium;Heating is connected between the input of the output end of the groove type heat collector and the high temperature oil storage tank Oil gas heat exchanger is connected between the output end of device, the input of the low-temperature reservoir tank and the high temperature oil storage tank;The oil gas The liquid passage inlet of heat exchanger connects the output end of the gas storage unit, the pressure-air for heating the gas storage unit output, The pressure-air after heating inputs the high rate turbine generator unit and generated electricity.
2. the non-afterburning compressed air electricity generation system of photo-thermal combined type as claimed in claim 1, it is characterised in that the gas storage list Member includes motor, air compressor and air storage chamber;The air compressor is driven by the motor, the air compression The output end of machine connects the import of the air storage chamber.
3. the non-afterburning compressed air electricity generation system of photo-thermal combined type as claimed in claim 2, it is characterised in that the air storage chamber Inlet and outlet control valve is set respectively, for control input and output air storage chamber gas flow.
4. the non-afterburning compressed air electricity generation system of photo-thermal combined type as claimed in claim 3, it is characterised in that the air pressure Contracting machine uses two-stage compression, and every grade of compression outlet is equipped with cooler, for cooling down the gas after compression.
5. the non-afterburning compressed air electricity generation system of photo-thermal combined type as claimed in claim 1, it is characterised in that the high speed is saturating Flat generator unit includes air expansion turbine, high-speed power generation unit and electronic power convertor, and the electronic power convertor is used In the conversion that high-frequency alternating current is realized to AC-DC-exchange.
6. the non-afterburning compressed air electricity generation system of photo-thermal combined type as claimed in claim 5, it is characterised in that the high speed is saturating Flat generator unit includes control device.
7. the non-afterburning compressed air electricity generation system of photo-thermal combined type as claimed in claim 6, it is characterised in that the high speed is saturating Flat generator unit includes electronic power convertor control device, and the electronic power convertor control device is according under different operating modes The rotating speed of turbine adjusts control parameter, for ensureing the quality of power supply exported after frequency conversion.
8. the non-afterburning compressed air electricity generation system of photo-thermal combined type as described in claim any one of 1-7, it is characterised in that institute State in low-temperature reservoir tank and the high temperature oil storage tank and be equipped with nitrogen protection device.
9. the non-afterburning compressed air electricity generation system of photo-thermal combined type as described in claim any one of 1-7, it is characterised in that institute State low-temperature reservoir tank and the high temperature oil storage tank appearance is surrounded by insulation material.
CN201621219279.3U 2016-11-10 2016-11-10 A kind of non-afterburning compressed air electricity generation system of photo-thermal combined type Active CN206582068U (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106499599A (en) * 2016-11-10 2017-03-15 清华大学 A kind of non-afterburning compressed air electricity generation system of photo-thermal combined type
CN107701406A (en) * 2017-10-31 2018-02-16 清华大学 A kind of adiabatic compression air energy storage systems of tail gas backheat
CN108151368A (en) * 2018-01-05 2018-06-12 山东大学 A kind of energy storage type high-efficiency air source heat pump heating system and method
CN111578537A (en) * 2020-04-28 2020-08-25 中国建筑科学研究院有限公司 Combined energy source coupling energy supply and energy storage integrated device
CN112994001A (en) * 2021-04-26 2021-06-18 南昌五钜信息科技有限公司 Power equipment control system based on energy internet platform
CN114243071A (en) * 2021-12-17 2022-03-25 上海鲲华新能源科技有限公司 Compressed air energy storage and solid oxide fuel cell combined high-efficiency energy storage method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106499599A (en) * 2016-11-10 2017-03-15 清华大学 A kind of non-afterburning compressed air electricity generation system of photo-thermal combined type
CN107701406A (en) * 2017-10-31 2018-02-16 清华大学 A kind of adiabatic compression air energy storage systems of tail gas backheat
CN108151368A (en) * 2018-01-05 2018-06-12 山东大学 A kind of energy storage type high-efficiency air source heat pump heating system and method
CN111578537A (en) * 2020-04-28 2020-08-25 中国建筑科学研究院有限公司 Combined energy source coupling energy supply and energy storage integrated device
CN111578537B (en) * 2020-04-28 2021-11-09 中国建筑科学研究院有限公司 Combined energy source coupling energy supply and energy storage integrated device
CN112994001A (en) * 2021-04-26 2021-06-18 南昌五钜信息科技有限公司 Power equipment control system based on energy internet platform
CN114243071A (en) * 2021-12-17 2022-03-25 上海鲲华新能源科技有限公司 Compressed air energy storage and solid oxide fuel cell combined high-efficiency energy storage method

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