CN201705599U - Trough type solar energy thermal power generation system - Google Patents
Trough type solar energy thermal power generation system Download PDFInfo
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- CN201705599U CN201705599U CN2010201587744U CN201020158774U CN201705599U CN 201705599 U CN201705599 U CN 201705599U CN 2010201587744 U CN2010201587744 U CN 2010201587744U CN 201020158774 U CN201020158774 U CN 201020158774U CN 201705599 U CN201705599 U CN 201705599U
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- heat
- heat accumulation
- steam generator
- fused salt
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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 utility model relates to a solar energy thermal power generation system, which mainly comprises a trough type solar energy light condensation and heat collection device, and a first heat accumulation device, wherein heat collection pipes filled with fused salt are arranged in the position of an optical focus of the light condensation and heat collection device, and the fused salt is used for storing solar heat energy; the first heat accumulation device is connected with the heat collection pipes and stores fused salt heated by sunlight; the first heat accumulation device is connected with a steam generator, is transduced with water in the steam generator, and changes the water into saturated steam to enter a turbine for work application; the steam generator is connected with a second heat accumulation device; the second heat accumulation device is connected with the heat collection pipes; and the fused salt transduced in the steam generator enters the heat collection pipes via the second heat accumulation device to form circulation. The utility model has the characteristics of high efficiency, good heat accumulation performance, good continuity, low cost and the like.
Description
Technical field
The utility model relates to a kind of solar heat power generation system, relates to a kind of trough type solar power generation system particularly.
Background technique
One of major impetus of advancing as civilized society, energy utilization technology occupies critical role in human social development, in the century in the past, the prelude of big industrial age has been opened in the development and utilization of fossil energies such as coal, oil, rock gas, after death, human total year energy supply amount has increased by 10 times.Yet, the using energy source of immoderate development of resources and poor efficiency has caused a large amount of wastings of resources and serious day by day ecological environmental pollution, the human existence space has been subjected to very big threat, in new century, energy science is had to simultaneously in the face of the dual-pressure of shortage of resources and environmental pollution, and people turn to sight in the utilization of renewable energy sources gradually.In recent years, solar energy is with the unlimitedness of its energy, the generality of existence, and the spatter property of development and use makes many developed countries all rise to renewable energy sourcess such as solar energy from the original additional energy status of the strategy alternatives energy.Copenhagen meeting, Chinese government's solemn commitment significantly energy-saving and emission-reduction reach more than 40% and (compared in 2005), and clean energy resourcies such as nuclear energy, wind energy, solar energy will become the main contents of national energy strategy.
Solar energy thermal-power-generating is meant solar energy collecting and is translated into the high temperature heat of working fluid, the technology that converts thereof into electric energy of hot machine or other generation technology by routine then, and this notion just proposed as far back as 19th century; Developed countries such as the U.S., Germany, Japan, Israel build up various dissimilar experiment and demonstration devices and commercialized running device in succession since the eighties in 20 century, promoted the development of solar energy thermal-power-generating technology, and China almost still is blank out in this technical field.
This technology is compared the characteristics that have table 1 listed with at present main in the world clean energy resource nuclear energy, wind energy, photovoltaic solar.
By table 1 as can be seen, solar energy thermal-power-generating has remarkable advantages in clean energy resource.
The model utility content
The purpose of this utility model is to provide a kind of trough type solar power generation system, to utilize the heat energy of solar energy fully.
For achieving the above object, the solar heat power generation system that the utility model provides mainly consists of:
The groove type solar light-condensing and heat-collecting device has inside to be filled with the heat build-up pipe of fused salt in the optical focus positional alignment of this light-condensing and heat-collecting device, and this fused salt is used to store the heat energy of the sun;
The first heat accumulation equipment is connected with the heat build-up pipe, stores the fused salt that is heated by sunlight;
This first heat accumulation equipment connects steam generator, and the outlet pipe of this steam generator and return pipe are connected to steam turbine respectively, with the water transducing in the steam generator, water is become saturated vapour enter the turbine expansion acting;
This steam generator connects the second heat accumulation equipment;
The second heat accumulation equipment is connected with the heat build-up pipe;
Fused salt in steam generator behind the transducing enters the heat build-up pipe through the second heat accumulation equipment, forms circulation.
Described solar heat power generation system wherein is provided with pump between the first heat accumulation equipment and the steam generator, and the fused salt in the first heat accumulation equipment is pumped into steam generator; Be provided with pump between the steam generator and the second heat accumulation equipment, the fused salt after the fused salt in the steam generator is cooled pumps into the second heat accumulation equipment.
Described solar heat power generation system, wherein fused salt is a kind of or mixture of sodium nitrate and potassium nitrate.
Described solar heat power generation system, wherein the temperature of fused salt is 450 ℃-550 ℃ in the first heat accumulation equipment, the temperature of fused salt is 200 ℃-300 ℃ in the second heat accumulation equipment.
Described solar heat power generation system, wherein the groove type solar light-condensing and heat-collecting device connects a tracking adjustment hydraulic piston device.
The utlity model has following characteristics:
1) efficient height;
2) have the heat accumulation function;
3) thermal storage performance is good;
4) continuity is good;
5, cost is low.
Description of drawings
Fig. 1 is a connection diagram of the present utility model.
Fig. 2 is the schematic appearance of the utility model groove type solar light-condensing and heat-collecting device.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in detail.Just provided critical piece in the accompanying drawing, all the other known technologies or known equipment are not drawn in the accompanying drawings.
See also Fig. 1, solar heat power generation system of the present invention is made up of two loops substantially.Wherein groove type solar light-condensing and heat-collecting device 1, the first heat accumulation equipment 2, the second heat accumulation equipment 3 and steam generator 4 are formed first loop; With Turbo-generator Set is second loop 5.
Reflector 11 by groove type solar light-condensing and heat-collecting device 1 is reflected into sunlight on a line, solar energy heat build-up pipe 12 is installed on the optical focus of this line strip, be filled with fused salt in this solar energy heat build-up pipe 12, sunlight heats (can be heated to 450 ℃-550 ℃) by the groove type solar light-condensing and heat-collecting device with the fused salt in the heat build-up pipe, fused salt enters into the first heat accumulation equipment 2 by a pump, in the first heat accumulation equipment 2, carry out heat accumulation, the first heat accumulation equipment 2 utilizes pump that a part of fused salt is introduced steam generator 4, utilize steam generator 4 that heat is passed to water in second loop, make water become saturated vapour, this fused salt also is cooled simultaneously.Cooled fused salt is returned the second heat accumulation equipment 3 (the first heat accumulation equipment 2 in the present embodiment and the second heat accumulation equipment 3 are the heat vessel of jar shape) by pump, enter in the solar energy heat build-up pipe 12 in the groove type solar light-condensing and heat-collecting device 1 by the second heat accumulation equipment 3 again, so move in circles, form the heat absorption of a sealing and the cyclic process of heat release.
The saturated vapour that is produced by steam generator 4 in first loop enters the acting of expanding in the Turbo-generator Set 5 in second loop, and the heat energy that the steam enthalpy is discharged changes the mechanical energy of turbine rotor rotation into.Turbine rotor and engine rotor diaxon are rigidly connected, so steam turbine directly drives generator for electricity generation, and mechanical energy is converted to electric energy.
As for comprising also in second loop 5 that separator, condenser, condensate pump, low-pressure heater, oxygen-eliminating device, main feed pump and high-pressure heater etc. are formed the steam turbine loop and recirculating cooling water system is formed.Because this part belongs to known technology, and the emphasis of neither the utility model discussing, so the utility model is not described in detail this part, only provides a recapitulative schematic representation yet.
Be example with 100kw experiment power station below, for a more detailed description to the utility model.
Present embodiment is made up of 100 meters long photo-thermal loop, fused salt wherein adopts sodium nitrate and potassium nitrate (60%, 40%), utilize the groove type solar light-condensing and heat-collecting device that temperature of molten salt is heated to 550 ℃ and circulate from 290 ℃ system, system design transmission of heat flow velocity 3.0-7.5kg/s, design pressure 8.5bar, fused salt consumption 25m
3(47500kg), maximum heat energy 2500kW; Vacuum heat build-up pipe can heat fused salt to 550 ℃, and the heat accumulation time can 72 hours, and in heat storage can 24 hours thermal loss only 1%, a part of heat is stored in by fused salt and is used for the generating at night in the jar; Another part fused salt feeds water heat transfer by steam generator, the temperature of water is heated to be 530 ℃, the 60bar water vapor, water vapour enters second loop and promotes the generating of 100kw steam turbine generator, this generator set is generation load 85% when having sunlight, when loseing sunlight is under 30% the situation, can realize uninterruptable power generation 72 hours, unit efficiency can reach 30-41%, all the time moves considerably beyond present solar energy cogeneration power plant in the world according to the time continuously.And this power station has peak regulating function, when being incorporated into the power networks, if electric weight surplus in the electrical network, this system can say that unnecessary electric weight is converted into the heat in the heat storage can, store by fused salt, when electric load is high, be electric energy with thermal power transfer, realize the peak regulating function in power station by the technological scheme system.
Groove type solar light-condensing and heat-collecting device of the present utility model is adjusted the lighting angle that it receives sunlight by known tracking regulating device, to receive sunlight to greatest extent.
The utility model is compared with present known slot type photo-thermal power generation technology has following characteristics:
1) efficient height: the loop temperature operating temperature of the utility model solar groove type photo-thermal power generation technology is between 450 ℃-550 ℃, apparently higher than 250 ℃-400 ℃ of other technology loop works temperature.
2) with heat storage function: the utility model is to adopt to melt the salt heat accumulation, and the heat accumulation time can be greater than 17 hours, and the efficient height in heat storage can.
3) thermal storage performance is good: melt the salt heat accumulation in heat storage can 24 hours heat loss only 1% that the utility model adopts, and other known technology is to adopt water or oil, the oily salt mixed mode of employing is also arranged, the heat accumulation time of water was less than 30 minutes, the heat accumulation time of oil, the operating temperature of oily salt mixed mode was low less than 2 hours.
4) have the peak load stations function: of the present invention can be in the situation of night electric weight surplus area or daytime institute's generated energy affluence by thermal storage device, electricity directly heats fused salt, and the form of electric energy with heat energy is stored up; Be electric energy by the present invention with thermal power transfer again when needing the high load capacity electricity consumption, reach the function of peak load stations.
5) continuity is good: the water in the known technology and oil are intermittent work, and its annual utilization hours is lower than 2500 hours/year; And when the heat accumulation time of salt be more than 17 hours after, its system is 24 continuous throughout the twenty-four hour24s, during less than 100 days, annual utilization hours can reach 6000 hours/year at overcast and rainy days.
6) cost is low: because above-mentioned characteristic, its integrated cost is also just low, and cost is suitable with construction of nuclear power station cost, and operation cost is lower than the nuclear power station operation cost, has large-scale promotion value.
Table 1
Claims (4)
1. a solar heat power generation system is characterized in that, mainly consists of:
The groove type solar light-condensing and heat-collecting device has inside to be filled with the heat build-up pipe of fused salt in the optical focus positional alignment of this light-condensing and heat-collecting device;
The first heat accumulation equipment is connected with the heat build-up pipe;
This first heat accumulation equipment connects steam generator;
The outlet pipe of this steam generator and return pipe are connected to steam turbine respectively;
This steam generator connects the second heat accumulation equipment;
The second heat accumulation equipment is connected with the heat build-up pipe.
2. solar heat power generation system according to claim 1 is characterized in that, is provided with pump between the first heat accumulation equipment and the steam generator.
3. solar heat power generation system according to claim 1 is characterized in that, is provided with pump between the steam generator and the second heat accumulation equipment.
4. solar heat power generation system according to claim 1 is characterized in that, the groove type solar light-condensing and heat-collecting device connects one and follows the tracks of the adjustment hydraulic piston device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201587744U CN201705599U (en) | 2010-03-23 | 2010-03-23 | Trough type solar energy thermal power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201587744U CN201705599U (en) | 2010-03-23 | 2010-03-23 | Trough type solar energy thermal power generation system |
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| Publication Number | Publication Date |
|---|---|
| CN201705599U true CN201705599U (en) | 2011-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010201587744U Expired - Fee Related CN201705599U (en) | 2010-03-23 | 2010-03-23 | Trough type solar energy thermal power generation system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537912A (en) * | 2012-02-29 | 2012-07-04 | 江苏太阳宝新能源有限公司 | Method and system for generating high-temperature sterilized steam by using solar thermal and molten salt storage energy |
| CN102937379A (en) * | 2012-11-16 | 2013-02-20 | 宁夏光合能源科技有限公司 | Method and device for recycling and storing ferroalloy furnace flue waste heat for generating power |
| CN103620303A (en) * | 2011-02-17 | 2014-03-05 | 西门子公司 | Method for operating a directly heated, solar-thermal steam generator |
| CN107288693A (en) * | 2017-08-14 | 2017-10-24 | 合肥耀世同辉科技有限公司 | Low-temperature generating system and electricity-generating method in solar energy |
| CN108019325A (en) * | 2018-01-11 | 2018-05-11 | 深圳市爱能森科技有限公司 | A kind of groove type solar solar-thermal generating system of fishing light complementation |
-
2010
- 2010-03-23 CN CN2010201587744U patent/CN201705599U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103620303A (en) * | 2011-02-17 | 2014-03-05 | 西门子公司 | Method for operating a directly heated, solar-thermal steam generator |
| CN103620303B (en) * | 2011-02-17 | 2016-04-13 | 西门子公司 | For running the method for direct-fired sun hot type steam generator |
| US9568216B2 (en) | 2011-02-17 | 2017-02-14 | Siemens Aktiengesellschaft | Method for operating a directly heated, solar-thermal steam generator |
| CN102537912A (en) * | 2012-02-29 | 2012-07-04 | 江苏太阳宝新能源有限公司 | Method and system for generating high-temperature sterilized steam by using solar thermal and molten salt storage energy |
| CN102937379A (en) * | 2012-11-16 | 2013-02-20 | 宁夏光合能源科技有限公司 | Method and device for recycling and storing ferroalloy furnace flue waste heat for generating power |
| CN107288693A (en) * | 2017-08-14 | 2017-10-24 | 合肥耀世同辉科技有限公司 | Low-temperature generating system and electricity-generating method in solar energy |
| CN108019325A (en) * | 2018-01-11 | 2018-05-11 | 深圳市爱能森科技有限公司 | A kind of groove type solar solar-thermal generating system of fishing light complementation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110112 Termination date: 20130323 |