CN106014891B - A kind of groove type solar association circulating power generation system - Google Patents

A kind of groove type solar association circulating power generation system Download PDF

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Publication number
CN106014891B
CN106014891B CN201610324407.9A CN201610324407A CN106014891B CN 106014891 B CN106014891 B CN 106014891B CN 201610324407 A CN201610324407 A CN 201610324407A CN 106014891 B CN106014891 B CN 106014891B
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heat
type solar
groove type
generator
steam
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CN106014891A (en
Inventor
邴旖旎
王军
刘婷婷
蒋川
周元兴
黄秀勇
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Southeast University
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Southeast University
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03GSPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G6/00Devices for producing mechanical power from solar energy
    • F03G6/06Devices for producing mechanical power from solar energy with solar energy concentrating means
    • F03G6/064Devices for producing mechanical power from solar energy with solar energy concentrating means having a gas turbine cycle, i.e. compressor and gas turbine combination
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D15/00Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F01D15/10Adaptations for driving, or combinations with, electric generators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K25/00Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
    • F01K25/08Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
    • F01K25/10Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
    • F01K25/103Carbon dioxide
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00Solar heat collectors using working fluids
    • F24S10/30Solar heat collectors using working fluids with means for exchanging heat between two or more working fluids
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S60/00Arrangements for storing heat collected by solar heat collectors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02GHOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G2250/00Special cycles or special engines
    • F02G2250/03Brayton cycles
    • 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
    • Y02E10/44Heat exchange systems
    • 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
    • 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
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/14Combined heat and power generation [CHP]
    • 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
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/16Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]

Abstract

The present invention relates to solar energy thermal-power-generating fields, disclose a kind of groove type solar association circulating power generation system.The system includes mainly groove type solar heat collector, heat storage and exchange device, Closed Brayton Power Cycle power generator and Rankine cycle power generator.Solar radiant energy is converted into thermal energy using groove type solar heat collector, through heat storage and exchange device heat is provided for Closed Brayton Power Cycle power generator, being done work in gas-turbine as cycle fluid using supercritical carbon dioxide drives generator to produce electricl energy, and heat storage and exchange device is connected with steam turbine, the rotation of Steam Actuation steam turbine is generated, electrical power generators are passed through.The present invention can provide regulated power, improve generating efficiency.

Description

A kind of groove type solar association circulating power generation system
Technical field
The present invention relates to a kind of groove type solar association circulating power generation systems, belong to technical field of new energy utilization.
Background technology
The existence of the energy and the mankind are closely related, it is to uplift the people's living standard, and develop the material base of world civilization. Existing energy resource structure there are fossil energy supply pressures it is big, carbon emission amount is big the problems such as.In order to alleviate environmental pressure, meet day The energy demand that benefit increases realizes that sustainable development, Renewable Energy Development are just particularly important.With regenerative resource and original Substitution fossil resource is the important outlet for solving energy crisis to material comprehensively.Solar energy is distributed on the earth most extensively, using most clear It is clean, while being also that exhaust nexhaustible regenerative resource be ideal alternative energy source.
Trough type solar power generation technology is compared more ripe with other several solar energy thermal-power-generating technologies.As complete A kind of complete commercialized system, whole investment is minimum, and economic benefit is best, thus is realized first in three kinds of light collecting power generations It is commercialized and is used widely all over the world.
Invention content
Technical problem:In view of the deficiencies of the prior art, the present invention provides a kind of groove type solar association circulating power generation systems.
Since the intensity of solar radiation moment is changing, to overcome in solar energy thermal-power-generating since morning and evening or rainy weather etc. are made At intermittence, it is necessary to heat accumulation measure is taken, to provide the high-quality electric energy of continuous-stable.
Supercritical carbon dioxide Brayton cycle electricity generation system is a kind of advanced power circulatory system, compact-sized, volume It is smaller, it saves cost and space.It uses carbon dioxide as working media, in closed Bretton thermodynamic cycle Acting, conversion efficiency of thermoelectric far above using steam as working media conventional vapor turbine and using combustion gas as the combustion gas wheel of medium Machine.
Electricity generation system of the present invention uses working medium of the supercritical carbon dioxide as Brayton cycle, compact-sized, with the sun It can be heat source, eliminate fuel.Using heat storage and exchange device and two kinds of endless form cogenerations, number when extending power generation improves Generating efficiency.
Technical solution:In order to solve the above technical problems, the present invention provides a kind of groove type solar combined cycle generation systems System, including groove type solar heat collector, hot tank, cold tank, heat exchanger, regenerator;Wherein, groove type solar heat collector is connected to Hot tank, hot tank are respectively communicated with heat exchanger and regenerator, and heat exchanger returns to connection slot type solar energy heat collector, heat exchange by cold tank Device;Solar radiant energy is converted to thermal energy storage in heat-storing device by the groove type solar heat collector, is enclosed Bretton Circulation electric generating apparatus, which provides heat and generates steam with water heat exchange, enters steam electric power generator, completes power generation process.
The regenerator is connected to gas-turbine, cooler and compressor and is formed into a loop, and gas-turbine is equipped with the first power generation Machine.
The heat-exchanging loop of heat exchanger includes the steam turbine, condenser and feed pump being sequentially communicated.Steam turbine is equipped with Second generator.
The groove type solar heat collector, thermal energy is converted to by solar radiant energy, is filled by condenser, thermal-collecting tube and tracking Set composition;Sun light reflection is converged to high-temperature vacuum collection by condenser using tracking technique in the groove type solar heat collector On heat pipe, the heat-transfer working medium using fuse salt as groove type solar heat collector, in the high temperature of groove type solar heat collector After being heated in evacuated collector tube by heat storage in heat-storing device.In the high-temperature vacuum heat-collecting tube of groove type solar heat collector After interior heating by heat storage in heat-storing device.
Heat-storing device of the present invention is the hot tank and cold tank, and wherein heat-storage medium is fuse salt, the extraction unit in hot tank Point high-temperature fusion salt heats overcritical Brayton cycle working medium in regenerator, part high-temperature fusion salt in heat exchanger with water into Row heat exchange.The Closed Brayton Power Cycle power generator uses supercritical carbon dioxide to be carried out for media implementation Brayton cycle Power generation, be made of compressor, regenerator, gas-turbine, cooler, the first generating set at;Closed Brayton Power Cycle power generator, Supercritical carbon dioxide enters after compressor compresses and enters expansion work in gas-turbine in regenerator after heating, drives coaxial First electrical power generators, the working medium after acting enter cooling in cooler, are again introduced into compressor, complete cycle.
The Rankine cycle power generator uses vapor to complete to carry out power generation process for media implementation Rankine cycle, by Steam turbine, condenser, feed pump, the second generating set at.Rankine cycle power generator, the Steam Actuation come out through heat exchanger Steam turbine rotates, and the second electrical power generators, the steam after acting is driven to enter after condenser condensation and enter heat exchange through feed pump Device generates steam completion and recycles again.
A kind of groove type solar association circulating power generation system of the present invention, using groove type solar heat collector by solar energy Thermal energy storage is converted in heat-storing device, heat is provided for Brayton cycle using heat-storing device, exchanges heat and generates with heat exchanger Steam, and then complete power generation process.
Advantageous effect:
1), the arrangement achieves continuous and stable electric generations, improve solar energy generating efficiency and power generation quality.
2), the arrangement achieves fuel is not consumed, water resource is saved.
3), the arrangement achieves solar combined power generatings, improve energy conversion efficiency.
4), the arrangement achieves using only fuse salt as heat transfer heat storage medium, reduce secondary heat exchanger, simplify and be System, reduces cost.
5) environmentally safe, the arrangement achieves merely with solar energy.
Description of the drawings
Fig. 1 is the groove type solar association circulating power generation system structural schematic diagram of the present invention.
Specific implementation mode
Below in conjunction with the accompanying drawings, the present invention will be further described.
Have in Fig. 1:Groove type solar heat collector 1, hot tank 2, cold tank 3, heat exchanger 4, regenerator 5, gas-turbine 6, cooling Device 7, compressor 8, the first generator 9, steam turbine 10, condenser 11, feed pump 12, the second generator 13.
As shown in Figure 1, a kind of groove type solar association circulating power generation system provided by the invention, the system include:Slot type Solar energy heat collector 1, hot tank 2, cold tank 3, heat exchanger 4, regenerator 5, gas-turbine 6, cooler 7, compressor 8, first generate electricity Machine 9, steam turbine 10, condenser 11, feed pump 12, the second generator 13.
Sun light reflection is converged to thermal-collecting tube by condenser using tracking technique in above-mentioned groove type solar heat collector 1 On, low temperature molten salt in heating tube.Its tracking mode tracks for polar axis, can reduce the influence of sun altitude, improves optically focused Collecting efficiency, condenser section are paraboloid, and thermal-arrest inner tube layer is coated with coating for selective absorption, and outer layer is the glass for having anti-reflection film It manages, is vacuumized between ectonexine, both ends have expansion joint.
Above-mentioned heat-storing device is heat-storage medium using fuse salt, which has moisture-absorption characteristics, there is good heat transfer and stream Liquid flowability energy, while having the advantages that low cost, safety, environmental sound.When sun abundance on daytime, low temperature molten salt is from cold Extraction enters slot type vacuum tube collector in tank 3, becomes high-temperature fusion salt and enter in hot tank 2 to store, while will be in hot tank 2 Extraction section high-temperature fusion salt, which enters in regenerator 5, heats supercritical carbon dioxide, and part high-temperature fusion salt adds in heat exchanger 4 Hot water generates vapor driving steam turbine power generation, and high-temperature fusion salt becomes low-temperature molten salt after heat release and flows into cold tank 3.In morning When evening or rainy weather, extraction high-temperature fusion salt exchanges heat directly from hot tank 2, is flowed into after heat exchange in cold tank 3.
In above-mentioned Closed Brayton Power Cycle power generator, using supercritical carbon dioxide as working medium, supercritical carbon dioxide exists Density is larger and without phase-change within the scope of certain operating parameter.Enter gas after being heated into regenerator 5 after the compression of compressor 8 Expansion work in turbine 6 drives the first coaxial generator 9 to generate electricity, and the supercritical carbon dioxide after acting enters in cooler 7 It is cooling, it is again introduced into compressor 8, completes cycle.
In above-mentioned Rankine cycle power generator, the steam that heat exchanger 4 generates enters steam turbine 10, and steam turbine 10 rotates The power generation of the second generator 13, exhaust is driven to enter the condensation of condenser 11 feed pump 12 after and completed into the generation steam of heat exchanger 4 Cycle.
The present invention devises a kind of groove type solar association circulating power generation system, and system energy-provision way is:Groove type solar Solar radiant energy is converted to thermal energy by heat collector, and by thermal energy storage in hot tank.Hot tank is connect with regenerator, is enclosed cloth Thunder circulation electric generating apparatus provides heat, and the drawing generator that does work in gas-turbine using supercritical carbon dioxide as cycle fluid produces Raw electric energy.Hot tank generates Steam Actuation steam turbine with heat exchanger heat exchange and rotates and drive electrical power generators.Medium after heat exchange It flows back in cold tank and is again introduced into groove type solar thermal-collecting tube and heated, complete cycle.The present invention is provided merely with solar energy Steady and continuous electric energy does not consume fuel, environmentally safe.
Description and application of the invention herein are illustrative, as long as those of ordinary skill in the art are taken off according to the present invention Show equivalent modification or variation made by content, should be included in the scope of the protection described in the claims.

Claims (1)

1. a kind of groove type solar association circulating power generation system, it is characterised in that:Including groove type solar heat collector (1), heat Tank (2), cold tank (3), heat exchanger (4) and regenerator (5);
Wherein, groove type solar heat collector (1) is connected to hot tank (2), and hot tank (2) is respectively communicated with heat exchanger (4) and regenerator (5), heat exchanger (4) returns to connection slot type solar energy heat collector (1), heat exchanger (4) by cold tank (3);
Solar radiant energy is converted to thermal energy storage in heat-storing device by the groove type solar heat collector (1), is enclosed cloth Thunder circulation electric generating apparatus, which provides heat and generates steam with water heat exchange, enters steam electric power generator, completes power generation process;
Regenerator (5) the connection gas-turbine (6), cooler (7) and compressor (8) are to be formed into a loop, on gas-turbine (6) Equipped with the first generator (9);
The heat-exchanging loop of heat exchanger (4) includes the steam turbine (10), condenser (11) and feed pump (12) being sequentially communicated;
Steam turbine (10) is equipped with the second generator (13);
Heat-transfer working medium using fuse salt as groove type solar heat collector (1), the height in groove type solar heat collector (1) After being heated in warm evacuated collector tube by heat storage in heat-storing device;
Heat-storing device is the hot tank (2) and cold tank (3), and wherein heat-storage medium is fuse salt, the extraction section in hot tank (2) High-temperature fusion salt overcritical Brayton cycle working medium of heating in the regenerator (5), part high-temperature fusion salt in heat exchanger (4) with Water exchanges heat;
Working medium of the supercritical carbon dioxide as Closed Brayton Power Cycle power generator enters backheat after compressor (8) compression Enter expansion work in gas-turbine (6) in device (5) after heating, drives coaxial the first generator (9) to generate electricity, the working medium after acting It is again introduced into compressor (8) into after being cooled down in cooler (7);
Steam Actuation steam turbine (10) rotation drives the second generator (13) to generate electricity, and it is cold to enter condenser (11) for steam after acting It is solidifying to enter heat exchanger (4) generation steam completion cycle through feed pump (12) to constitute Rankine cycle power generator.
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CN107084103A (en) * 2017-06-22 2017-08-22 哈尔滨锅炉厂有限责任公司 It is a kind of using carbon dioxide as heat accumulation and do work working medium tower type solar solar-thermal generating system
CN107023446B (en) * 2017-06-22 2019-02-15 哈尔滨锅炉厂有限责任公司 It is a kind of using carbon dioxide as heat accumulation and do work working medium Fresnel solar light-heat power-generation system
CN107084102A (en) * 2017-06-22 2017-08-22 哈尔滨锅炉厂有限责任公司 It is a kind of using carbon dioxide as heat accumulation and do work working medium groove type solar solar-thermal generating system
CN208578679U (en) * 2017-06-29 2019-03-05 深圳市爱能森科技有限公司 A kind of improvement Bretton solar-thermal generating system based on tower heliostat
CN108413367B (en) * 2018-03-21 2019-10-29 中国科学院电工研究所 A kind of supercritical water and fuse salt heat exchanger apparatus
CN109113821A (en) * 2018-08-01 2019-01-01 王闯业 A kind of wide width energy cycle engine
CN110500248A (en) * 2019-08-19 2019-11-26 西北工业大学 A kind of steam circulation generator with solar thermal collector and Helical recuperator

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