CN105091356A - Solar concentrating heat collection and conventional energy source coupling power generation system - Google Patents
Solar concentrating heat collection and conventional energy source coupling power generation system Download PDFInfo
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- CN105091356A CN105091356A CN201510413295.XA CN201510413295A CN105091356A CN 105091356 A CN105091356 A CN 105091356A CN 201510413295 A CN201510413295 A CN 201510413295A CN 105091356 A CN105091356 A CN 105091356A
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
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Abstract
The invention relates to a solar concentrating heat collection and conventional energy source coupling power generation system. The system is characterized in that a solar concentrating heat collection device comprises a solar concentrating heat collection panel, an oil pump and a heat exchanger; the heat energy output end of the solar concentrating heat collection panel is connected with the heat energy input end of the heat exchanger, and the low-temperature heat conducting oil output end of the heat exchanger is connected with the low-temperature heat conducting oil input end of the solar concentrating heat collection plate through the oil pump; the steam output end of the heat exchanger is connected with the low-pressure steam input end of a steam turbine, and the dead steam output end of the steam turbine is connected with the input end of a water feed pump through a condenser; the output end of the water supply pump is connected with the return water input end of a steam generator and the return water input end of the heat exchanger; the high-pressure steam output end of the steam generator is connected with the high-pressure steam input end of the steam turbine, and the low-pressure steam output end of the steam generator is connected with the low-pressure steam input end of the steam turbine; and the solar concentrating heat collection and conventional energy source coupling power generation system is formed. The system has the beneficial effects that the number of heat storage equipment is decreased, energy is saved, and environment friendliness is achieved.
Description
Technical field
The present invention relates to a kind of solar generating system, especially relate to a kind of solar energy light gathering and heat collecting and conventional energy resource coupled electricity-generation system.Belong to solar energy generation technology field.
Background technology
At present, in Solar use, the theory and technology of light-heat transfer is the most ripe, applies also extensive.Solar energy thermal-power-generating refers to: in the mode of optical focus, solar radiant energy is converted to high temperature heat, then heats water generates steam by heat trnasfer thus drive Turbo-generator Set generating.Compared with photovoltaic cell, solar energy thermal-power-generating technology has front equipment end manufacture and pollutes little, easy large-scale, can provide electric power and heat supply, heat accumulation and can extend generating dutation, impacts the advantages such as little to electrical network.But the energy profile density of solar energy impinges is little, the available energy of acquisition and the four seasons, the meteorological condition such as round the clock and are rain or shine relevant, and the production supply of electric power and user demand are often asynchronous in time.Therefore, in solar heat power generation system, usually all a set of heat reservoir can be set, cause system investments to increase.
Photo-thermal power generation, refers to and with light-condensing and heat-collecting device, solar energy collecting to be got up certain working medium of heating, thus drive heat engine drive electrical generators to generate electricity.First its conversion process of energy is convert solar radiant energy to heat energy, and then thermal power transfer is mechanical energy, is finally converted to electric energy by mechanical energy again.
In prior art, solar energy light gathering and heat collecting electricity generation system is provided with heat-storing device, usually adopts fused salt accumulation of heat.When solar energy is sufficient in the daytime, a part of heat-conducting oil heating condensation water generates steam, drives steam turbine power generation; Another part high temperature heat conductive oil enters heat reservoir, heating fused salt.Night, time without sunshine, high-temperature molten salt heat release heating conduction oil, conduction oil produced steam by heat exchange, ensures that electricity generation system continues generating.In prior art, its shortcoming is as follows:
(1) because solar energy is unstable, do not continue, need in system to arrange energy-storage system, its Capacity Cost 200-300 dollar/kW, operating cost 3-50 dollar/kWh, cost of investment is high.
(2) system adds thermal storage equipment, adds the conversion times of energy, and heat storage efficiency is 30-60%, is equivalent to decrease capacity usage ratio.
(3) system adds thermal storage equipment, complex structure, and fault rate improves.For common fused salt accumulation of heat, need to ensure good fused salt transmission loop, prevent fused salt from revealing and fused salt frozen plug pipeline.In addition, because the operating temperature of fused salt is higher, binary nitrate reaches as high as 565 DEG C, and double carbonate reaches as high as 850 DEG C, and the Flange joint of pipeline must consider the problem of expanding with heat and contract with cold under large temperature difference condition, thus adds maintenance cost.
(4) add thermal storage equipment, take up an area and increase.
Summary of the invention
Object of the present invention, it is the problem that solar power system exists complex structure, conversion times is many, energy utilization rate is low and fault rate improves in order to solve prior art, a kind of solar energy light gathering and heat collecting and conventional energy resource coupled electricity-generation system are provided, have the advantages that cost of electricity-generating is low, Solar use efficiency is high, system failure rate is low and system footprint is few.
Object of the present invention can realize by taking following technical scheme:
A kind of solar energy light gathering and heat collecting and conventional energy resource coupled system, comprise solar light-condensing and heat-collecting device and generating set, it is characterized in that: solar light-condensing and heat-collecting device comprises solar energy light gathering and heat collecting plate, oil pump and heat exchanger, generating set comprises steam turbine, steam turbine generator, condenser, feed pump and steam generator, and steam generator comprises waste heat boiler and conventional energy resource feed mechanism; The heat energy output end of solar energy light gathering and heat collecting plate connects the thermal input of heat exchanger, the low temperature conduction oil output of heat exchanger connects the low temperature conduction oil input of solar energy light gathering and heat collecting plate by oil pump, the steam output end of heat exchanger connects the low-pressure steam input of steam turbine; The exhaust steam output of steam turbine connects the input of feed pump through condenser, feed pump is booster, and feedwater delivery side of pump is divided into two-way, and a road connects the backwater input of steam generator, and another road connects the backwater input of heat exchanger; The high steam output of steam generator connects the high steam input of steam turbine, and the low-pressure steam output of steam generator connects the low-pressure steam input of steam turbine; Form solar energy light gathering and heat collecting and conventional energy resource coupled system.
Object of the present invention can also realize by taking following technical scheme:
Further, described heat exchanger is connected to form successively by preheater, steam generator and superheater; The water inlet end of described preheater connects feedwater delivery side of pump, and the water side of preheater connects the input of steam generator; The output of described steam generator connects the low-pressure steam input of steam turbine by superheater; The high temperature oil input of described superheater connects the high temperature oil output of solar energy light gathering and heat collecting plate, the high temperature oil output of superheater connects the heat exchange medium loop input of preheater by the heat exchange medium loop of steam generator, the low temperature conduction oil output of described preheater connects the low temperature conduction oil output for heat exchanger, is connected the low-temperature oil input of solar energy light gathering and heat collecting plate by oil pump; Form the heat exchanger closed circuit of solar light-condensing and heat-collecting device.
Further, described conventional energy resource feed mechanism is made up of the compressor of fuel engine power generation unit, combustion chamber and gas turbine, the inlet end of compressor is communicated with the air input of air, connection combustion chamber, outlet side, the external natural gas of combustion gas input of combustion chamber, the high-temperature flue gas output of combustion chamber connects the input of gas turbine, and the clutch end of gas turbine connects the power intake of fuel engine power generation machine, to drive fuel engine power generation machine to generate electricity; The high-temperature flue gas output of gas turbine connects the gas input of waste heat boiler, forms conventional energy resource supply circuit; The high steam output of waste heat boiler connects the high steam input of steam turbine, and the low-pressure steam output of waste heat boiler connects the low-pressure steam input of steam turbine; The recirculated water input of waste heat boiler connects feedwater delivery side of pump, forms the backwater input of steam generator.
Further, the flue gas output of described waste heat boiler connects the flue gas input of chimney, forms toxic emission structure.
Further, described conventional energy resource feed mechanism is made up of fossil-fuel-fired mechanism and boiler, and the heat energy output end of fossil-fuel-fired mechanism connects the thermal input of boiler, forms conventional energy resource supply circuit; The high steam output of boiler connects the high steam input of steam turbine, and the recirculated water input of boiler connects feedwater delivery side of pump, forms the backwater input of steam generator.
Further, the flue gas output of described boiler connects the flue gas input of chimney, forms toxic emission structure.
The present invention has following outstanding beneficial effect:
1, the heat energy output end of solar heat-collection plate of the present invention connects the thermal input of heat exchanger, the low temperature conduction oil output of heat exchanger connects the low temperature conduction oil input of solar heat-collection plate by oil pump, the steam output end of heat exchanger connects the low-pressure steam input of steam turbine; The exhaust steam output of steam turbine connects the input of feed pump through condenser, feed pump is booster, and feedwater delivery side of pump is divided into two-way, and a road connects the backwater input of steam generator, and another road connects the backwater input of heat exchanger; The high steam output of steam generator connects the high steam input of steam turbine, and the low-pressure steam output of steam generator connects the low-pressure steam input of steam turbine; Form solar energy light gathering and heat collecting and conventional energy resource coupled system, therefore, the problem that solar power system exists complex structure, conversion times is many, energy utilization rate is low and fault rate improves of prior art can be solved, there is the beneficial effect that cost of electricity-generating is low, Solar use efficiency is high, system failure rate is low and system footprint is few.
2, the present invention adopts solar energy light gathering and heat collecting and conventional energy resource coupled electricity-generation, eliminate the energy storage device in conventional solar energy light gathering and heat collecting system, the steam that heat exchanger in solar energy light gathering and heat collecting system is produced is directly used in generating, decrease power conversion number of times, add energy utilization efficiency.Owing to decreasing energy storage device, thus equipment and system failure rate reduce, and decrease the occupation of land of solar energy thermal-power-generating part.The steam produced by solar energy light gathering and heat collecting introduces the steam turbine filling generating in conventional energy resource utilization, takes full advantage of renewable energy solar energy, reduces generating specific energy consumption, saved the energy and decreased environmental pollution simultaneously.The present invention also reduces the investment of this aspect by reducing solar energy thermal-power-generating part energy storage device, thus increases economic efficiency.
Accompanying drawing explanation
Fig. 1 is the system architecture schematic diagram of the specific embodiment of the invention 1
Fig. 2 is the system architecture schematic diagram of the specific embodiment of the invention 2
1-solar energy light gathering and heat collecting plate; 2-oil pump; 3-superheater; 4-evaporimeter; 5-preheater; 6-steam turbine; 7-turbine generator; 8-condenser; 9-feed pump; 201-compressor; 202-combustion chamber; 203-gas turbine; 204-fuel engine power generation machine; 205-waste heat boiler; 301-boiler; 12-chimney; 10-high steam; 11-low-pressure steam.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail:
Specific embodiment 1:
As shown in Figure 1, the present embodiment comprises solar light-condensing and heat-collecting device and generating set, solar light-condensing and heat-collecting device comprises solar energy light gathering and heat collecting plate 1, oil pump 2 and heat exchanger, generating set comprises steam turbine 6, steam turbine generator 7, condenser 8, feed pump 9 and steam generator, and steam generator comprises waste heat boiler and conventional energy resource feed mechanism; The heat energy output end of solar energy light gathering and heat collecting plate 1 connects the thermal input of heat exchanger, the low temperature conduction oil output of heat exchanger connects the low temperature conduction oil input of solar heat-collection plate by oil pump 2, the steam output end of heat exchanger connects the low-pressure steam input of steam turbine 6; The exhaust steam output of steam turbine 6 connects the input of feed pump 9 through condenser 8, feed pump 9 is booster, and the output of feed pump 9 is divided into two-way, and a road connects the backwater input of steam generator, and another road connects the backwater input of heat exchanger; The high steam output of steam generator connects the high steam input of steam turbine 6, and the low-pressure steam output of steam generator connects the low-pressure steam input of steam turbine 6; Form solar energy light gathering and heat collecting and conventional energy resource coupled system.
In the present embodiment:
Described heat exchanger is connected to form successively by preheater 5, steam generator 4 and superheater 3; The water inlet end of described preheater 5 connects the output of feed pump 9, and the water side of preheater 5 connects the input of steam generator 4; The output of described steam generator 4 connects the low-pressure steam input of steam turbine 6 by superheater 3; The high temperature oil input of described superheater 3 connects the high temperature oil output of solar energy light gathering and heat collecting plate 1, the high temperature oil output of superheater 3 connects the heat exchange medium loop input of preheater 5 by the heat exchange medium loop of steam generator 4, the low temperature conduction oil output of described preheater 5 connects the low temperature conduction oil output for heat exchanger, is connected the low-temperature oil input of solar energy light gathering and heat collecting plate 1 by oil pump 2; Form the heat exchanger closed circuit of solar light-condensing and heat-collecting device.
Further, described conventional energy resource feed mechanism is made up of the compressor 201 of fuel engine power generation unit, combustion chamber 202 and gas turbine 203, the inlet end of compressor 201 is communicated with the air input of air, connection combustion chamber, outlet side 202, the external natural gas of combustion gas input of combustion chamber 202, the high-temperature flue gas output of combustion chamber 202 connects the input of gas turbine 203, and the clutch end of gas turbine 203 connects the power intake of fuel engine power generation machine 204, to drive fuel engine power generation machine 204 to generate electricity; The high-temperature flue gas output of gas turbine 203 connects the gas input of waste heat boiler 205, forms conventional energy resource supply circuit; The high steam output of waste heat boiler 205 connects the high steam input of steam turbine 6, and the low-pressure steam output of waste heat boiler 205 connects the low-pressure steam input of steam turbine 6; The recirculated water input of waste heat boiler 205 connects the output of feed pump 9, forms the backwater input of steam generator.The flue gas output of described waste heat boiler 205 connects the flue gas input of chimney 12, forms toxic emission structure.
Specific embodiment 1 operation principle is as follows:
Air, through compressor 201, produces high-temperature flue gas with combustion of natural gas, enters gas turbine 203 in combustion chamber 202, drives fuel engine power generation machine 204 to generate electricity.High-temperature flue gas enters waste heat boiler 205, and heating high-pressure feeds water, and produces high steam 10 and low-pressure steam 11, enters steam turbine 6, drives steam turbine generator 7 to generate electricity.Exhaust steam in steam turbine 6 after acting is after condenser 8 cools, and after feed pump 9 boosts, be divided into two-way, a road enters waste heat boiler 205, and a road enters preheater 5.The feedwater entering preheater 5 is preheating to uniform temperature in preheater 5, enters in steam generator 4, produces saturated vapor, then enters superheater 3, produces low-pressure steam, enters steam turbine 6 filling generate electricity with the low-pressure steam of waste heat boiler 205 after mixing.High temperature heat conductive oil after heat release, becomes low temperature conduction oil successively in superheater 3, steam generator 4 and preheater 5, gets back in solar energy light gathering and heat collecting plate 1 again heat up through oil pump 2.
Specific embodiment 2:
As shown in Figure 2, the feature of this specific embodiment 2 is: described conventional energy resource feed mechanism is made up of fossil-fuel-fired mechanism and boiler 301, and the heat energy output end of fossil-fuel-fired mechanism connects the thermal input of boiler 301, forms conventional energy resource supply circuit; The high steam output of boiler 301 connects the high steam input of steam turbine 6, and the recirculated water input of boiler 301 connects the output of feed pump 9, forms the backwater input of steam generator.The flue gas output of described boiler 301 connects the flue gas input of chimney 12, forms toxic emission structure.All the other structures are with specific embodiment 1.
Specific embodiment 2 operation principle is as follows:
Fossil fuel burn in the combustion chamber of boiler 301, produce high temperature heat (or flue gas), and heating enters the feedwater of boiler 301, and flue gas waste gas enters air through chimney 12.Feedwater from feed pump 9 is divided into two-way, and a road enters the high steam 10 that boiler 301 produces, and enter steam turbine 6 and generate electricity, a road enters preheater 5.Enter the feedwater of preheater 5 successively after steam generator 4 and superheater 3, produce low-pressure steam 11, enter steam turbine 6 filling generating.Exhaust steam in steam turbine 6 after acting, after condenser 8 cools, is boosted through feed pump 9, is again entered boiler 301 and preheater 5.High temperature heat conductive oil after heat release, becomes low temperature conduction oil successively in superheater 3, steam generator 4 and preheater 5, gets back in solar energy light gathering and heat collecting plate 1 again heat up through oil pump 2.
The solar energy light gathering and heat collecting that the present invention relates to and conventional energy resource coupled electricity-generation system, solar energy light gathering and heat collecting and conventional energy resource coupled system is adopted to generate electricity, have on the basis solving solar energy instability, cancel the heat accumulation equipment of groove type solar, reduce cost for solar power generation, the feature of stable, reliable, environmental protection.
The above; be only the present invention's preferably specific embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with this technical staff in the scope that the present invention discloses; be equal to according to technical solution of the present invention and inventive concept thereof and replace or change, all belonged to protection scope of the present invention.In the present invention, the content of not concrete explanation is state of the art scope.
Claims (6)
1. a solar energy light gathering and heat collecting and conventional energy resource coupled electricity-generation system, comprise solar light-condensing and heat-collecting device and generating set, it is characterized in that: solar light-condensing and heat-collecting device comprises solar energy light gathering and heat collecting plate (1), oil pump (2) and heat exchanger, generating set comprises steam turbine (6), steam turbine generator (7), condenser (8), feed pump (9) and steam generator, and steam generator comprises waste heat boiler and conventional energy resource feed mechanism; The heat energy output end of solar heat-collection plate (1) connects the thermal input of heat exchanger, the low temperature conduction oil output of heat exchanger connects the low temperature conduction oil input of solar energy light gathering and heat collecting plate by oil pump (2), the steam output end of heat exchanger connects the low-pressure steam input of steam turbine (6); The exhaust steam output of steam turbine (6) connects the input of feed pump (9) through condenser (8), feed pump (9) is booster, the output of feed pump (9) is divided into two-way, and a road connects the backwater input of steam generator, and another road connects the backwater input of heat exchanger; The high steam output of steam generator connects the high steam input of steam turbine (6), and the low-pressure steam output of steam generator connects the low-pressure steam input of steam turbine (6); Form solar energy light gathering and heat collecting and conventional energy resource coupled system.
2. a kind of solar energy light gathering and heat collecting according to claim 1 and conventional energy resource coupled electricity-generation system, is characterized in that: described heat exchanger is connected to form successively by preheater (5), steam generator (4) and superheater (3); The water inlet end of described preheater (5) connects the output of feed pump (9), and the water side of preheater (5) connects the input of steam generator (4); The output of described steam generator (4) connects the low-pressure steam input of steam turbine (6) by superheater (3); The high temperature oil input of described superheater (3) connects the high temperature oil output of solar energy light gathering and heat collecting plate (1), the high temperature oil output of superheater (3) connects the heat exchange medium loop input of preheater (5) by the heat exchange medium loop of steam generator (4), the low temperature conduction oil output of described preheater (5) connects the low temperature conduction oil output for heat exchanger, is connected the low-temperature oil input of solar energy light gathering and heat collecting plate (1) by oil pump (2); Form the heat exchanger closed circuit of solar light-condensing and heat-collecting device.
3. a kind of solar energy light gathering and heat collecting according to claim 1 and 2 and conventional energy resource coupled electricity-generation system, it is characterized in that: described conventional energy resource feed mechanism is by the compressor (201) of fuel engine power generation unit, combustion chamber (202) and gas turbine (203) are formed, the inlet end of compressor (201) is communicated with air, the air input of connection combustion chamber, outlet side (202), the external natural gas of combustion gas input of combustion chamber (202), the high-temperature flue gas output of combustion chamber (202) connects the input of gas turbine (203), the clutch end of gas turbine (203) connects the power intake of fuel engine power generation machine (204), generate electricity to drive fuel engine power generation machine (204), the high-temperature flue gas output of gas turbine (203) connects the gas input of waste heat boiler (205), forms conventional energy resource supply circuit, the high steam output of waste heat boiler (205) connects the high steam input of steam turbine (6), and the low-pressure steam output of waste heat boiler (205) connects the low-pressure steam input of steam turbine (6), the recirculated water input of waste heat boiler (205) connects the output of feed pump (9), forms the backwater input of steam generator.
4. a kind of solar energy light gathering and heat collecting according to claim 3 and conventional energy resource coupled electricity-generation system, is characterized in that: the flue gas output of described waste heat boiler (205) connects the flue gas input of chimney (12), forms toxic emission structure.
5. a kind of solar energy light gathering and heat collecting according to claim 1 and 2 and conventional energy resource coupled electricity-generation system, it is characterized in that: described conventional energy resource feed mechanism is made up of fossil-fuel-fired mechanism and boiler (301), the heat energy output end of fossil-fuel-fired mechanism connects the thermal input of boiler (301), forms conventional energy resource supply circuit; The high steam output of boiler (301) connects the high steam input of steam turbine (6), and the recirculated water input of boiler (301) connects the output of feed pump (9), forms the backwater input of steam generator.
6. a kind of solar energy light gathering and heat collecting according to claim 5 and conventional energy resource coupled electricity-generation system, is characterized in that: the flue gas output of described boiler (301) connects the flue gas input of chimney (12), forms toxic emission structure.
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| CN106837719A (en) * | 2017-03-31 | 2017-06-13 | 西部国际绿色能源斯特林(贵州)智能装备制造有限公司 | A kind of heat storage type voltage stabilizing Stirling electricity generation system |
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| CN110220177A (en) * | 2019-06-26 | 2019-09-10 | 东方电气集团东方锅炉股份有限公司 | The water side system and operation method of solar light-heat power-generation fused salt steam generating system |
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Application publication date: 20151125 |