CN103939306A - Two-loop type solar thermal power generation system - Google Patents
Two-loop type solar thermal power generation system Download PDFInfo
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- CN103939306A CN103939306A CN201410145572.9A CN201410145572A CN103939306A CN 103939306 A CN103939306 A CN 103939306A CN 201410145572 A CN201410145572 A CN 201410145572A CN 103939306 A CN103939306 A CN 103939306A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G5/00—Devices for producing mechanical power from muscle energy
- F03G5/06—Devices for producing mechanical power from muscle energy other than of endless-walk type
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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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- Combustion & Propulsion (AREA)
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- Engine Equipment That Uses Special Cycles (AREA)
Abstract
A two-loop type solar thermal power generation system comprises a first-loop solar heat collecting subsystem and a second-loop steam power generation subsystem. The first-loop solar heat collecting subsystem obtains high-temperature working media by the way of heating low-temperature working media through solar energy and stores the high-temperature working media. The second-loop steam power generation subsystem is used for generating various kinds of steam with different pressures and temperatures by the way of heating water and steam by the high-temperature working media to drive a steam turbine generator unit to generate power. The heated high-temperature working media lowers to be low-temperature working media and are conveyed back to the first-loop solar heat collecting subsystem to be continuously heated. The solar heat collecting subsystem and the steam power generation subsystem operate independently and do not affect each other. The two-loop solar thermal power generation system can be used for removing system fluctuations caused by uncontrollable factors of solar radiation strength variation, cloud shielding and the like, adjusting of the power generation power of the steam turbine generator unit and continuous and stable power generation can be achieved, and the power generation efficiency of the solar thermal power generation system is improved.
Description
Technical field
The invention belongs to solar energy thermal-power-generating technical field, particularly a kind of two loop-type solar heat power generation systems.
Background technique
Distribution of solar energy is extensive, reserves are huge, is a kind of clean renewable energy sources, has broad application prospects.Solar energy generation technology mainly contains photovoltaic generation and two kinds of forms of solar energy thermal-power-generating at present.Photovoltaic generation is to utilize the photovoltaic effect of semiconductor devices that solar energy is converted into electric energy, has the advantages such as reliability is high, convenient for installation and maintenance, but photovoltaic generation is with high costs, and the efficiency of photoelectric conversion is not high.Solar energy thermal-power-generating is to utilize condenser to assemble solar energy, after adsorber absorbs, changes into heat energy, produces high-temperature steam or gas and enters Turbo-generator Set generation electric energy.Compared with photovoltaic generation, the solar heat power generation system quality of power supply is good, reliable.
At present solar energy thermal-power-generating technology mainly contains slot type, Fresnel, tower and dish formula, wherein slot type, Fresnel and towerly all realized commercialized running, and dish formula is in the experiment and demonstration stage.
Existing solar heat power generation system generally adopts a kind of steam of parameter to enter steam turbine power generation, and the average endothermic temperature of thermal-arrest is high, has increased thermal loss; Working medium gateway has a narrow range of temperature, and has increased flow and the power consumption of pump, has finally affected the generating efficiency of solar heat power generation system, has increased operating cost.
Intensity of solar radiation is affected by environment larger, and the factors such as day alternates with night, weather and cloud block all can affect the solar energy of collecting, and causes solar heat power generation system generated output uncontrollable in running, affects stability and the reliability of system operation.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of two loop-type solar heat power generation systems, solve the uncontrollable problem of generated output in solar heat power generation system running, improved the generating efficiency of solar heat power generation system.
To achieve these goals, the technical solution used in the present invention is:
A kind of two loop-type solar heat power generation systems, comprising:
A loop solar thermal-arrest subtense angle that utilizes solar energy heating cryogenic fluid to obtain high temperature refrigerant and store; And
Utilize described high temperature refrigerant heating water and steam, produce the secondary circuit steam power power generation sub-system of the steam driven Turbo-generator Set generating of multiple different pressures and temperature, the high temperature refrigerant cooling after heating continues heating for cryogenic fluid is recycled to a loop solar thermal-arrest subtense angle.
A described loop solar thermal-arrest subtense angle comprises low-temperature storage tank 1, high temperature storage tank 4 and is connected in the solar energy heat-collection field 3 between the two.
Between described low-temperature storage tank 1 and solar energy heat-collection field 3, be provided with pump 2, heat in order to cryogenic fluid is pumped into solar energy heat-collection field 3.
Described secondary circuit steam power power generation sub-system comprises steam turbine 15, vapour condenser 14, condensation water heater 9, oxygen-eliminating device 10, low pressure feed water pump 11, high pressure water pump 12, low-pressure steam generator 8, preheater 7 and high pressure steam generator 6, one loop high temperature refrigerant enters high pressure steam generator 6 by high temperature storage tank 4, enter again low-pressure steam generator in parallel 8 and preheater 7, enter again condensation water heater 9, finally become cryogenic fluid and be back to low-temperature storage tank 1; The water in oxygen-eliminating device 10 is delivered to preheater 7 by high pressure water pump 12, and the high-pressure feed water that goes out preheater 7 enters high pressure steam generator 6, produces the superheated vapor of High Temperature High Pressure, and the main steam mouth of introducing steam turbine 15 drives generating; The water in oxygen-eliminating device 10 is delivered to low-pressure steam generator 8 by low pressure feed water pump 11, produces low-pressure superheated steam, and the low pressure filling mouth of introducing steam turbine 15 drives generating; The exhaust steam that goes out steam turbine 15 enters vapour condenser 14, condenses into therein water and delivers to condensation water heater 9, in condensation water heater 9, after heating, sends into oxygen-eliminating device 10.
One loop working medium pump 5 is set between described high pressure steam generator 6 and high temperature storage tank 4; Between described vapour condenser 14 and condensation water heater 9, condensate pump 13 is set.
The working medium of a described loop solar thermal-arrest subtense angle is conduction oil or fused salt.
Described solar energy heat-collection field 3 is groove type solar heat collecting field, Fresnel solar energy heat-collection field or tower type solar heat collecting field.
Described condensation water heater 9 and preheater 7 are shell-and-tube heat exchanger.
Described low-pressure steam generator 8 is direct current spiral-type, Horizontal U-shaped pipe natural recirculating type or vertical U-shaped pipe natural recirculating type; Described high pressure steam generator 6 is direct current spiral-type, Horizontal U-shaped pipe natural recirculating type or vertical U-shaped pipe natural recirculating type.
The steam of described different pressures and temperature is 2 kinds or two or more.
Compared with prior art, solar heat power generation system is divided into two loops by the present invention, one loop solar thermal-arrest subtense angle and secondary circuit steam power power generation sub-system, these two subtense angles independent operating separately, be independent of each other, the variation of intensity of solar radiation only affects a loop solar thermal-arrest subtense angle, and the generated output of secondary circuit steam power power generation sub-system is completely controlled, is not subject to the impact in a loop.By solar energy field and the high temperature storage tank of different capabilities are set in a loop, can realize the heat accumulation of different time, extend the generating dutation of system, increase operation rate; The steam that secondary circuit produces multiple different pressures and temperature is incorporated to steam turbine, has improved thermoelectrical efficiency, has reduced operating cost.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Embodiment
Describe embodiments of the present invention in detail below in conjunction with drawings and Examples.
As shown in Figure 1, the present invention's two loop-type solar heat power generation systems, this system comprises a loop solar thermal-arrest subtense angle and secondary circuit steam power power generation sub-system.Solar energy heating subtense angle heats the working medium in a loop by solar energy heat-collection field 3 focusing sunlight, and the high temperature refrigerant obtaining is stored in high temperature storage tank 4, for secondary circuit; Secondary circuit steam power power generation sub-system is used the loop working medium heating water and steam in high temperature storage tank 4, produce the steam of multiple different pressures and temperature, be incorporated to steam turbine 15, the generating of driving steam turbine generator set, the loop working medium after cooling is stored in low-temperature storage tank 1.One loop solar thermal-arrest subtense angle and secondary circuit steam power power generation sub-system independent operating separately, be independent of each other.
One loop solar thermal-arrest subtense angle comprises low-temperature storage tank 1, high temperature storage tank 4, solar energy heat-collection field 3, pump 2 and a loop working medium.Its workflow is that the loop working medium storing in low-temperature storage tank 1 is pumped into solar energy heat-collection field 3 by pump 2, and solar energy heat-collection field 3 focusing sunlight heat working medium wherein, and the high temperature refrigerant after heating is stored in high temperature storage tank 4.
Secondary circuit steam power power generation sub-system comprises steam turbine 15, vapour condenser 14, condensate pump 13, condensation water heater 9, oxygen-eliminating device 10, low pressure feed water pump 11, high pressure water pump 12, low-pressure steam generator 8, preheater 7, high pressure steam generator 6 and a loop working medium pump 5.Its workflow is that the high temperature one loop working medium storing in high temperature storage tank 4 is pumped into high pressure steam generator 6 by a loop working medium pump 5, high temperature one loop working medium is divided into two-part after high pressure steam generator 6 coolings, a part enters low-pressure steam generator 8, another part enters preheater 7, preheating high-pressure feed water, after high-pressure feed water preheating, enter high pressure steam generator 6, two-part one loop working medium from low-pressure steam generator 8 and preheater 7 coolings enters condensation water heater 9, heat-setting water, a loop working medium after cooling is got back in low-temperature storage tank 1, complete the circulation of a loop working medium, water of condensation is pumped into condensation water heater 9 by condensate pump 13, water of condensation after heating enters oxygen-eliminating device 10, feedwater is pumped into low-pressure steam generator 8 by low pressure feed water pump 11, produce the superheated vapor of low pressure, introduce the low pressure filling mouth of steam turbine 15, the generating of driving Turbo-generator Set, feedwater is pumped into preheater 7 by high pressure water pump 12, feedwater after preheating enters high pressure steam generator 6, produce the superheated vapor of High Temperature High Pressure, introduce the main steam mouth of steam turbine 15, the generating of driving Turbo-generator Set, exhaust steam after steam does work in steam turbine 15 enters vapour condenser 14, in vapour condenser 14, condense into water, complete the circulation of secondary circuit working medium.
In embodiment, a loop working medium can be conduction oil or fused salt.Solar energy heat-collection field 3 can be groove type solar heat collecting field, Fresnel solar energy heat-collection field or tower type solar heat collecting field.Condensation water heater and preheater are shell-and-tube heat exchanger.Low-pressure steam generator 8 and high pressure steam generator 6 can be all direct current spiral-type, Horizontal U-shaped pipe natural recirculating type or vertical U-shaped pipe natural recirculating type.
In above-mentioned specific embodiment, steam power power generation sub-system produces the steam of 2 kinds of different pressures and temperature, but the invention is not restricted to 2 kinds, according to the parameter of a loop working medium, can produce the steam of 2 kinds, 3 kinds, 4 kinds or more kinds of different pressures and temperature.
Claims (10)
1. two loop-type solar heat power generation systems, is characterized in that, comprising:
A loop solar thermal-arrest subtense angle that utilizes solar energy heating cryogenic fluid to obtain high temperature refrigerant and store; And
Utilize described high temperature refrigerant heating water and steam, produce the secondary circuit steam power power generation sub-system of the steam driven Turbo-generator Set generating of multiple different pressures and temperature, the high temperature refrigerant cooling after heating continues heating for cryogenic fluid is recycled to a loop solar thermal-arrest subtense angle.
2. two loop-type solar heat power generation systems according to claim 1, is characterized in that, a described loop solar thermal-arrest subtense angle comprises low-temperature storage tank (1), high temperature storage tank (4) and is connected in the solar energy heat-collection field (3) between the two.
3. two loop-type solar heat power generation systems according to claim 2, is characterized in that, between described low-temperature storage tank (1) and solar energy heat-collection field (3), are provided with pump (2), in order to cryogenic fluid is pumped into solar energy heat-collection field (3) heating.
4. two loop-type solar heat power generation systems according to claim 2, it is characterized in that, described secondary circuit steam power power generation sub-system comprises steam turbine (15), vapour condenser (14), condensation water heater (9), oxygen-eliminating device (10), low pressure feed water pump (11), high pressure water pump (12), low-pressure steam generator (8), preheater (7) and high pressure steam generator (6), one loop high temperature refrigerant enters high pressure steam generator (6) by high temperature storage tank (4), enter again low-pressure steam generator in parallel (8) and preheater (7), enter again condensation water heater (9), finally become cryogenic fluid and be back to low-temperature storage tank (1), the water in oxygen-eliminating device (10) is delivered to preheater (7) by high pressure water pump (12), and the high-pressure feed water that goes out preheater (7) enters high pressure steam generator (6), produces the superheated vapor of High Temperature High Pressure, and the main steam mouth of introducing steam turbine (15) drives generating, the water in oxygen-eliminating device (10) is delivered to low-pressure steam generator (8) by low pressure feed water pump (11), produces low-pressure superheated steam, and the low pressure filling mouth of introducing steam turbine (15) drives generating, the exhaust steam that goes out steam turbine (15) enters vapour condenser (14), condenses into therein water and delivers to condensation water heater (9), in condensation water heater (9), after heating, sends into oxygen-eliminating device (10).
5. two loop-type solar heat power generation systems according to claim 4, is characterized in that, a loop working medium pump (5) is set between described high pressure steam generator (6) and high temperature storage tank (4); Between described vapour condenser (14) and condensation water heater (9), condensate pump (13) is set.
6. according to two loop-type solar heat power generation systems described in the arbitrary claim of claim 1-5, it is characterized in that, the working medium of a described loop solar thermal-arrest subtense angle is conduction oil or fused salt.
7. according to two loop-type solar heat power generation systems described in the arbitrary claim of claim 2-5, it is characterized in that, described solar energy heat-collection field (3) is groove type solar heat collecting field, Fresnel solar energy heat-collection field or tower type solar heat collecting field.
8. according to two loop-type solar heat power generation systems described in claim 4 or 5, it is characterized in that, described condensation water heater (9) and preheater (7) are shell-and-tube heat exchanger.
9. according to two loop-type solar heat power generation systems described in claim 4 or 5, it is characterized in that, described low-pressure steam generator (8) is direct current spiral-type, Horizontal U-shaped pipe natural recirculating type or vertical U-shaped pipe natural recirculating type; Described high pressure steam generator (6) is direct current spiral-type, Horizontal U-shaped pipe natural recirculating type or vertical U-shaped pipe natural recirculating type.
10. according to two loop-type solar heat power generation systems described in claim 4 or 5, it is characterized in that the steam of described different pressures and temperature is 2 kinds or two or more.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410145572.9A CN103939306B (en) | 2014-04-11 | 2014-04-11 | A kind of two loop-type solar heat power generation systems |
| PCT/CN2015/073993 WO2015154600A1 (en) | 2014-04-11 | 2015-03-11 | Two-loop solar thermal energy power generation system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410145572.9A CN103939306B (en) | 2014-04-11 | 2014-04-11 | A kind of two loop-type solar heat power generation systems |
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| CN103939306A true CN103939306A (en) | 2014-07-23 |
| CN103939306B CN103939306B (en) | 2017-10-10 |
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Cited By (8)
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| CN104653419A (en) * | 2015-02-09 | 2015-05-27 | 南京瑞柯徕姆环保科技有限公司 | Closed Brayton tower solar thermal power generation method and system |
| CN104653420A (en) * | 2015-02-09 | 2015-05-27 | 南京瑞柯徕姆环保科技有限公司 | Tower solar thermal power generation method and system using closed Brayton cycle |
| WO2015154600A1 (en) * | 2014-04-11 | 2015-10-15 | 中国华能集团清洁能源技术研究院有限公司 | Two-loop solar thermal energy power generation system |
| CN105162107A (en) * | 2015-09-25 | 2015-12-16 | 蔡泮敏 | Power supply and distribution micro-grid system based on energy storage of industrialized salt making pond |
| CN105626402A (en) * | 2014-11-06 | 2016-06-01 | 中国电力工程顾问集团华北电力设计院工程有限公司 | Molten salt heat storage solar thermal power generation system |
| CN105697250A (en) * | 2016-03-16 | 2016-06-22 | 绍兴文理学院 | Tower type solar synthetic ammonia system |
| CN113931709A (en) * | 2021-09-26 | 2022-01-14 | 国核电力规划设计研究院有限公司 | Solar-assisted pressurized water reactor nuclear power station secondary circuit power generation system and method |
| WO2024037027A1 (en) * | 2022-08-17 | 2024-02-22 | 西安热工研究院有限公司 | Solar-coal hybrid steam turbine system based on cascade utilization of energy, and power generation system |
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| CN113931709A (en) * | 2021-09-26 | 2022-01-14 | 国核电力规划设计研究院有限公司 | Solar-assisted pressurized water reactor nuclear power station secondary circuit power generation system and method |
| CN113931709B (en) * | 2021-09-26 | 2024-04-09 | 国核电力规划设计研究院有限公司 | Solar-assisted pressurized water reactor nuclear power station secondary loop power generation system and method |
| WO2024037027A1 (en) * | 2022-08-17 | 2024-02-22 | 西安热工研究院有限公司 | Solar-coal hybrid steam turbine system based on cascade utilization of energy, and power generation system |
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| Publication number | Publication date |
|---|---|
| WO2015154600A1 (en) | 2015-10-15 |
| CN103939306B (en) | 2017-10-10 |
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