CN104359234B - For the fused salt heat absorber system in the tower photo-thermal of secondary reflection power station - Google Patents
For the fused salt heat absorber system in the tower photo-thermal of secondary reflection power station Download PDFInfo
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- CN104359234B CN104359234B CN201410626739.3A CN201410626739A CN104359234B CN 104359234 B CN104359234 B CN 104359234B CN 201410626739 A CN201410626739 A CN 201410626739A CN 104359234 B CN104359234 B CN 104359234B
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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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Abstract
The invention discloses a kind of fused salt heat absorber system for the tower photo-thermal of secondary reflection power station, described heat dump is arranged in ground, is divided into east, two symmetrical circuit systems of west. Circuit system includes heat dump header, heating surface tube panel and corresponding connecting pipe; Wherein, heat dump header comprises that an import distributes header, No. two imports to distribute header, and the middle reallocation header of mixing; Two imports distribute header to adopt erecting by overhang to hang on respectively in east, west side insulated wall fluting, and the middle reallocation header of mixing, between two loops, is fixed on ground by support; Heating surface tube panel is arranged in import and distributes header and mix between reallocation header, is divided into phototropic face and shady face. The present invention adopts ground configuration, by the optimal design of the adjustment to heat dump installation site and structure, has improved the heat dump thermal efficiency in performance, has reduced economically equipment investment and has reduced auxiliary power consumption.
Description
Technical field
The present invention relates to a kind of fused salt heat absorber system for the tower photo-thermal of secondary reflection power station, belong to fused salt heat dumpTechnical field.
Background technology
The tower photo-thermal power generation technology of fused salt be using fused salt as heat absorption, the technology pattern of heat accumulation and heat-transfer working medium. With respect toOther adopts if device of working medium, conduction oil or air etc. are as the system of working media, salt melting system have system pressure little,Working medium without phase transformation, can bear high heat flux and possess compared with elevated operating temperature, the thermal efficiency and year more high many advantages of utilization rate.Therefore, the tower photo-thermal power generation of fused salt becomes one of mainstream technology of photo-thermal power generation industry gradually.
At present, tower solar-thermal generating system for the collection and the reflection primary event principles that adopt, i.e. heat absorption of sunshine moreDevice is positioned on high tower top, accepts the directly sunshine of reflection of heliostat. For the heat dump that adopts this kind of arrangementExist following problem: 1. affected by high-altitude high wind, heat dump outer surface convection current heat waste is larger, and the thermal efficiency is lower; 2. heightEmpty layout, needs the high-lift circulating pump of configuration, and equipment cost and auxiliary power consumption increase; 3. working medium pipeline is longer, and system complex increasesLeakage possibility; 4. along with the amplification of power plant scale, heat dump volume and layout highly also need be along with liftings, directly cause inhalingThe increasing of the installation in early stage of hot device and later stage O&M difficulty and risk.
For above problem, lot of domestic and foreign expert or mechanism have started traditional tower system to improve, and openSend secondary reflection tower system technology, by arrange secondary reflection device on the pylon of high-altitude, by sunshine through heliostatAfter secondary reflection device reflection, then focus on the heat dump that is arranged in ground, so can overcome tower solar-thermal generating systemThe great number of issues existing is arranged in middle heat dump high-altitude.
Secondary reflection tower-type electricity generation system is for traditional tower system, and topmost difference is on pylon twoThe improvement of the increase of secondary reflection device and heat dump arrangement and structure. Wherein, for secondary reflection device, existing phase at presentClose enterprise and carried out further investigation, and propose numerous patents. But to being applied to the ground that is arranged in extensive tower photo-thermal power stationHeat absorber system or the research of structure but rarely have and mention.
Summary of the invention
The object of the invention is to: provide a kind of and be arranged in ground, inhale for the fused salt in the tower photo-thermal of secondary reflection power stationHot device system, adopts heat dump high-altitude to arrange that caused installation O&M difficulty, system become to solve existing tower photo-thermal power stationThe problems such as this height and auxiliary power consumption are large, thus above-mentioned problems of the prior art can effectively be solved.
The object of the invention realizes by following technical proposals: a kind of fused salt for the tower photo-thermal of secondary reflection power station is inhaledHot device system, described heat dump is arranged in ground, is divided into east, two symmetrical circuit systems of west; Circuit system includesHeat dump header, heating surface tube panel and corresponding connecting pipe; Wherein, heat dump header comprises and being connected with fused salt inlet ductworkAn import distributes header and No. two imports to distribute header, and the middle reallocation collection that mixes being connected with fused salt outlet conduitCase; Heating surface tube panel comprises symmetrical a loop tube panel and No. two loop tube panels, and wherein a loop tube panel is arranged inAn import distributes header and middle mixing between reallocation header, No. two loop tube panels be arranged in No. two imports distribute header andMiddle mixing between reallocation header.
This heat dump is arranged in ground, but not adopts the high-altitude tower top in traditional tower power station to arrange, so not only can subtractThe convection current heat waste of little heat dump under the high wind effect of high-altitude, improves the thermal efficiency, is convenient to again installation, operation and the dimension of system and equipmentProtect, can avoid again choosing of high-lift molten salt circulating pump, in reducing equipment investment, reduce auxiliary power consumption.
As preferably, the inside of heat dump header is provided with dividing plate, and heating surface tube panel is divided into several little tube panels by dividing plate, adjacentBetween two little tube panels, connect by connecting pipe.
As preferably, an import distribute header and No. two imports distribute header respectively by erecting by overhang hang on east,In west side insulated wall fluting, the middle reallocation header of mixing is fixed on ground by supporting seat, and be positioned at heating surface tube panel itUnder.
An import distributes header and No. two imports to distribute header to hang on respectively in east, west side insulated wall fluting, centreMix reallocation header between two loops, in fused salt flows heating process, it is play and mixes reallocation effect, so haveHelp reduce two loops thermal deviation to each other.
As preferably, a loop tube panel and No. two loop tube panels are divided into phototropic face and shady face, and phototropic face connects upwardBe subject to secondary reflection light beam irradiates, shady face lays heat-insulation layer.
Heating surface tube panel phototropic face, is accepted the direct irradiation of secondary reflection light beam upward, and realization is heated.
As preferably, a loop tube panel and No. two loop tube panels are provided with mounting inclination angle. Be provided with mounting inclination angle, withEnsure that fused salt relies on deadweight to realize quick drain under special operation condition; Inclination angle size is large according to secondary reflection hot spot and apertureLittle adjustment.
As preferably, the bottom of a loop tube panel and No. two loop tube panels is provided with supporting steel frame, supporting steel frame withBetween loop tube panel, supporting steel frame and No. two loop tube panels, be equipped with backing plate.
As preferably, heat dump surrounding is provided with insulated wall, and insulated wall is followed successively by refractory brick, insulating brick and common from inside to outsideBrick.
Insulated wall, for reducing heat dump and extraneous heat loss through convection, to improve the thermal efficiency.
As preferably, heat dump header outside is provided with incubator, and inside arranges accompanies heat protection to heat dump headerRadiant type electrical heating elements.
As preferably, low-temperature molten salt enters heat dump by fused salt inlet ductwork, after heating, is flowed out by fused salt outlet conduit.
Compared with prior art, beneficial effect of the present invention: the present invention is applicable to the fused salt in the tower power station of secondary reflection and inhalesHot device system, adopts ground configuration, by the adjustment to heat dump installation site, has improved the heat dump thermal efficiency in performance;Reduce economically equipment investment, reduced auxiliary power consumption; Meanwhile, be convenient to installation, the operation and maintenance of system, have largerPractical significance and promotional value.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is heat absorber system schematic flow sheet of the present invention.
Wherein: an import distributes header-1, No. two imports distribute header-2, middle mixing reallocation header-3, No. oneTube panel-4, loop, tube panel-5, No. two loops, fused salt inlet ductwork-6, fused salt outlet conduit-7, incubator-8, erecting by overhang-9,Supporting seat-10, supporting steel frame-11, backing plate-12, refractory brick-13, insulation brick-14, common brick-15, dividing plate-16.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment, to the present inventionBe further elaborated. Should be appreciated that specific embodiment described herein is only in order to explain the present invention, and be not used inLimit the present invention.
Disclosed all features in this description, or step in disclosed all methods or process, except mutual repulsionSpeciality and/or step beyond, all can combine by any way, unless narration especially all can or have a class by other equivalencesAlternative features like object is replaced, that is, unless narration especially, one in a series of equivalences of each feature or similar characteristicsIndividual embodiment.
Embodiment 1
For the fused salt heat absorber system in the tower photo-thermal of secondary reflection power station, working media adopts fused salt; Main suitableFor secondary reflection tower photo-thermal power station. This heat dump is arranged in ground, but not adopts the high-altitude tower top in traditional tower power station to arrange,As shown in Figure 1, 2. So, both can reduce the convection current heat waste of heat dump under the high wind effect of high-altitude, improve the thermal efficiency, be convenient to againThe installation of system and equipment, operation and maintenance, can avoid again choosing of high-lift molten salt circulating pump, reducing equipment investmentReduce auxiliary power consumption simultaneously.
This heat dump is divided into east, two symmetrical circuit systems of west, and circuit system comprises heat dump header, heating surfaceTube panel and corresponding connecting pipe, heating surface tube panel is divided into phototropic face and shady face, phototropic face upward, in order to accept secondary reflectionThe irradiation of light beam, lays insulation in backlight side, to reduce heating surface heat radiation, improves heat dump efficiency. Heat dump header comprise withThe import that fused salt inlet ductwork 6 is connected distributes header 1 and No. two imports to distribute header 2, and with fused salt outlet conduit 7 phasesIn the middle of connecting, mix reallocation header 3; An import distributes header 1 and No. two imports to distribute header 2 to hang on respectively east, west sideIn insulated wall fluting, middle mixing reallocated header 3 between a loop and No. two loops, and is arranged at ground; MiddleMix reallocation header, in fused salt heating process, fused salt is played to the reallocation effect of mixing, to reduce fused salt in two circuit systemsThermal deviation.
The inside of heat dump header is provided with dividing plate 16, and heat dump header is divided into several little tube panels by dividing plate 16, adjacent twoBetween little tube panel, connect by connecting pipe, little tube panel refers to header is divided into several less unit, and little tube panel is returning separatelyIn the system of road, by connecting pipe, realize series connection on the whole.
An import distributes 4, No. two imports of a header 1 corresponding loop tube panel to distribute the corresponding No. two loop tube panels of header 25, numbers loop tube panels 4 and No. two loop tube panels 5 arrange mounting inclination angle, and its main purpose is to ensure that heat dump is at accident conditionsOr inner fused salt can rely on self gravitation to realize quick drain while stopping transport; The large I in its inclination angle according to secondary reflection hot spot andThe size of aperture is adjusted.
The bottom of a loop tube panel 4 and No. two loop tube panels 5 is provided with supporting steel frame 11, supporting steel frame 11 and No. oneBetween loop tube panel 4, supporting steel frame 11 and No. two loop tube panels 5, be equipped with backing plate 12. Supporting steel frame is used for supporting tube panel weight,And avoid tube panel that downward dislocation distortion occurs under fused salt Action of Gravity Field in deadweight and pipe owing to being heated.
Heat dump surrounding is provided with insulated wall, for reducing the heat loss through convection of heat dump and external environment, to improve its thermal effectRate. Insulated wall is followed successively by refractory brick 13, insulating brick 14 and common brick 15 from inside to outside; That insulated wall plays is fire-resistant, the effect of insulation.
In addition, a loop header 1 and No. two loop headers 2 hang on east, west side insulated wall by erecting by overhang 9 respectivelyFluting in, to avoid the direct irradiation of secondary reflection light beam. Intermediate header 3 is fixed on ground by supporting seat 10, and positionIn the bottom of a loop tube panel 4 and No. two loop tube panels 5, utilize loop tube panel 4 and blocking of No. two loop tube panels 5 to keep awayExempt from the direct irradiation of light beam, reduce the radiation loss bringing due to illumination.
Heat dump header outside is provided with incubator 8, prevents scattering and disappearing of temperature, and the inside of heat dump header arranges heat dumpHeader is accompanied the radiant type electrical heating elements of heat protection, plays the protective effect to heat dump header.
Low-temperature molten salt is sent in heat dump east, west two circuit systems by fused salt inlet ductwork simultaneously, through corresponding loop pipeIn the middle of entering, mixes by screen reallocation header. Specifically, low-temperature molten salt distributes the north side of headers to enter from two imports simultaneously, passes throughIn the middle of entering, mixes by the corresponding little tube panel in loop reallocation header, after the fused salt in two loops mixes therein, then by connectingPipeline is sent in adjacent little tube panel, is finally back to two imports again and distributes header, so round, realizes between each little tube panelSeries connection, the fused salt after final heating mixes after mixing in reallocation header and is flowed out by outlet conduit in centre.
In heat dump, north side hot-fluid is the highest, and temperature of molten salt is minimum, otherwise southern side heat flow density is minimum, but temperature of molten saltThe highest; Fused salt enters southern side by north side and flows out the security that has improved to a great extent heat dump work.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all in essence of the present inventionAny amendment of doing within god and principle, be equal to replacement and improvement etc., within protection scope of the present invention all should be included in.
Claims (9)
1. for the fused salt heat absorber system in the tower photo-thermal of secondary reflection power station, it is characterized in that: described heat dump is arrangedIn ground, be divided into east, two symmetrical circuit systems of west; Circuit system include heat dump header, heating surface tube panel andCorresponding connecting pipe; Wherein, heat dump header comprises that the import being connected with fused salt inlet ductwork (6) distributes header (1)Distribute header (2) with No. two imports, and the middle reallocation header (3) of mixing being connected with fused salt outlet conduit (7); Heating surfaceTube panel comprises a symmetrical loop tube panel (4) and No. two loop tube panels (5), and wherein a loop tube panel (4) is arranged inAn import distributes header (1) and middle mixing between reallocation header (3), and No. two loop tube panels (5) are arranged in No. two importsDistribute header (2) and middle mixing between reallocation header (3).
2. the fused salt heat absorber system for the tower photo-thermal of secondary reflection power station as claimed in claim 1, is characterized in that: inhaleThe inside of hot device header is provided with dividing plate (16), and heating surface tube panel is divided into several little tube panels by dividing plate (16), adjacent two little tube panelsBetween connect by connecting pipe.
3. the fused salt heat absorber system for the tower photo-thermal of secondary reflection power station as claimed in claim 1, is characterized in that: oneNumber import distributes header (1) and No. two imports distribution header (2) to hang on east, west side insulated wall by erecting by overhang (9) respectivelyIn fluting, the middle reallocation header (3) of mixing is fixed on ground by supporting seat (10), and is positioned under heating surface tube panel.
4. the fused salt heat absorber system for the tower photo-thermal of secondary reflection power station as claimed in claim 1, is characterized in that: oneNumber loop tube panel (4) and No. two loop tube panels (5) are divided into phototropic face and shady face, and phototropic face is accepted secondary reflection light beam upwardIrradiate, shady face lays heat-insulation layer.
5. the fused salt heat absorber system for the tower photo-thermal of secondary reflection power station as claimed in claim 4, is characterized in that: oneNumber loop tube panel (4) and No. two loop tube panels (5) are provided with mounting inclination angle.
6. the fused salt heat absorber system for the tower photo-thermal of secondary reflection power station as claimed in claim 5, is characterized in that: oneThe bottom of number loop tube panel (4) and No. two loop tube panels (5) is provided with supporting steel frame (11), and supporting steel frame (11) returns with No. oneBetween road tube panel (4), supporting steel frame (11) and No. two loop tube panels (5), be equipped with backing plate (12).
7. the fused salt heat absorber system for the tower photo-thermal of secondary reflection power station as claimed in claim 1, is characterized in that: inhaleHot device surrounding is provided with insulated wall, and insulated wall is followed successively by refractory brick (13), insulating brick (14) and common brick (15) from inside to outside.
8. the fused salt heat absorber system for the tower photo-thermal of secondary reflection power station as claimed in claim 1, is characterized in that: inhaleHot device header outside is provided with incubator (8), and inside arranges the radiant type electrical heating elements of heat dump header being accompanied to heat protection.
9. the fused salt heat absorber system for the tower photo-thermal of secondary reflection power station as claimed in claim 1, is characterized in that: lowTemperature molten salt enters heat dump by fused salt inlet ductwork (6), after heating, is flowed out by fused salt outlet conduit (7).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410626739.3A CN104359234B (en) | 2014-11-10 | 2014-11-10 | For the fused salt heat absorber system in the tower photo-thermal of secondary reflection power station |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410626739.3A CN104359234B (en) | 2014-11-10 | 2014-11-10 | For the fused salt heat absorber system in the tower photo-thermal of secondary reflection power station |
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| CN104359234B true CN104359234B (en) | 2016-05-11 |
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| CN104776615B (en) * | 2015-04-22 | 2016-10-05 | 上海晶电新能源有限公司 | Direct endothermic solar heat collector based on Opticai Concentrating System With Secondary Reflection |
| CN109489271A (en) * | 2018-11-22 | 2019-03-19 | 上海电气集团股份有限公司 | A kind of solar energy thermal-power-generating heat-absorption device temperature regulating device and its operation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6736134B2 (en) * | 2001-09-05 | 2004-05-18 | The Boeing Company | Thin wall header for use in molten salt solar absorption panels |
| CN100362292C (en) * | 2004-06-03 | 2008-01-16 | 许虎良 | Rigging non-tracting focusing vacuum piping solar water heater |
| CN102155806A (en) * | 2011-03-28 | 2011-08-17 | 杭州立扬聚光蓄热科技有限公司 | Salt-melting heat-storing warehouse |
| CN103857906B (en) * | 2011-09-06 | 2016-12-21 | 巴斯夫欧洲公司 | Tubing and the method being used for emptying tubing |
| CN102852742B (en) * | 2012-08-30 | 2014-12-03 | 中国科学院电工研究所 | Tower type solar thermal power generation system for heat absorber of vacuum heat absorption pipes |
| CN203454433U (en) * | 2013-08-30 | 2014-02-26 | 内蒙古电力勘测设计院 | Novel nitrogen system of photo-thermal solar power station |
| CN204285843U (en) * | 2014-11-10 | 2015-04-22 | 东方电气集团东方锅炉股份有限公司 | For the fused salt heat absorber system in the tower photo-thermal power station of secondary reflection |
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