CN101846406A - Trough type solar heat collector, manufacture method thereof and solar heat utilization system - Google Patents
Trough type solar heat collector, manufacture method thereof and solar heat utilization system Download PDFInfo
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- CN101846406A CN101846406A CN201010173595A CN201010173595A CN101846406A CN 101846406 A CN101846406 A CN 101846406A CN 201010173595 A CN201010173595 A CN 201010173595A CN 201010173595 A CN201010173595 A CN 201010173595A CN 101846406 A CN101846406 A CN 101846406A
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- collector
- solar heat
- trough type
- type solar
- reflecting surface
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
- F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
- F24S23/74—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with trough-shaped or cylindro-parabolic reflective surfaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
- F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
- F24S23/82—Arrangements for concentrating solar-rays for solar heat collectors with reflectors characterised by the material or the construction of the reflector
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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
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a trough type solar heat collector comprising a heat collecting tube, a reflector, a reflector strut member and a sun locating system. The reflector comprises a reflecting surface and a reflecting surface strut member, wherein the reflecting surface is attached on the reflecting surface strut member and is in an arc shape. The sun locating system is used for ensuring that the reflector focuses sunshine on the heat collecting tube. The reflecting surface strut member comprises a plurality of sticks. The invention also discloses a manufacture method of the trough type solar heat collector and a solar heat utilization system utilizing the trough type solar heat collector.
Description
Technical field
The present invention relates to a kind of solar thermal collector, more specifically relate to a kind of trough type solar heat-collector with reflector.The invention still further relates to a kind of Solar Energy Heat Utilization System of making the method for this trough type solar heat-collector and using this trough type solar heat-collector.
Background technology
Trough type solar heat-collector is a kind ofly to absorb solar radiation and with the thermal energy transfer that the produces device to heat-transfer working medium, be form various in the critical component of high temperature solar heat utilization systems.Trough type solar heat-collector generally comprises: thermal-collecting tube, reflector, sun locating system and bracing or strutting arrangement.Wherein reflector forms by the flute profile of focus type is parabolic, and thermal-collecting tube is positioned on the paraboloidal focal line, and sun locating system is used to guarantee that reflector accurately aims at the sun and sunshine is reflexed to thermal-collecting tube.
Trough type solar heat-collector of the prior art generally adopts the method manufacturing of global formation optically focused cambered surface (perhaps parabolic), yet according to the cambered surface forming technique cost height of this manufacture method, and the cambered surface easy deformation of global formation, poor stability.Therefore need seek a kind of low cost and cambered surface is not allowed yielding trough type solar heat-collector manufacturing technology.
Summary of the invention
An object of the present invention is to provide a kind of novel trough type solar heat-collector and manufacture method thereof, be used to solve one or more technical problem of the prior art.
Trough type solar heat-collector according to the present invention comprises thermal-collecting tube, reflector, reflector holder and sun locating system.Described reflector comprises reflecting surface and reflecting surface strut member, and described reflecting surface is attached on the described reflecting surface strut member, described reflecting surface be shaped as arc.Described sun locating system is used to guarantee that described reflector focuses sunshine is at described thermal-collecting tube.Wherein, described reflecting surface strut member is made of a plurality of bars.
According to a further aspect in the invention, the length of above-mentioned bar and the ratio of cross-sectional shape girth were more than or equal to 5: 1.
According to a further aspect in the invention, the length direction of above-mentioned bar is along the axis direction of described thermal-collecting tube.
According to a further aspect in the invention, the width of above-mentioned bar is less than or equal to 100 millimeters.
According to a further aspect in the invention, the combination of above-mentioned bar can bend to cambered surface to constitute described reflecting surface strut member.
According to a further aspect in the invention, above-mentioned bar has hollow structure.
According to a further aspect in the invention, above-mentioned reflector holder comprises the support portion of an arc, is used to limit the shape of described reflecting surface strut member.
According to a further aspect in the invention, the support portion of above-mentioned reflector holder is a draw-in groove.
According to a further aspect in the invention, the cross sectional shape of above-mentioned draw-in groove comprises " worker " font, U-shaped or T shape.
According to a further aspect in the invention, above-mentioned reflecting surface is made of the strip reverberation of a plurality of width less than the thermal-collecting tube diameter.
According to a further aspect in the invention, above-mentioned reflecting surface is the monoblock type reverberation attached to the flexibility on the reflecting surface strut member.
According to a further aspect in the invention, above-mentioned monoblock type reverberation comprises that thickness is less than or equal to 3 millimeters glass mirror, reflectance coating, aluminium mirror, bronze mirror or stainless steel mirror.
According to a further aspect in the invention, above-mentioned arc comprises parabola shaped.
According to a further aspect in the invention, above-mentioned sun locating system comprises drive system and control system, and described drive system comprises oil cylinder and hydraulic power unit, and described control system comprises heat collector position sensor and logic controller.
According to a further aspect in the invention, single above-mentioned hydraulic power unit can drive a plurality of oil cylinders respectively, the heat collector row that each oil cylinder can drive single described trough type solar heat-collector or is in series by a plurality of described trough type solar heat-collectors.
According to a further aspect in the invention, described heat collector position sensor comprises rotary encoder, obliquity sensor or grating chi.
According to a further aspect in the invention, carry out signal from described heat collector position sensor signal with frame for movement and amplify, be used to improve the settled date precision of described trough type solar heat-collector.
According to a further aspect in the invention, described frame for movement is made of the drive of different-diameter.
The present invention also provides a kind of method of making above-mentioned trough type solar heat-collector, comprises the steps: 1) form a plurality of bars of described reflecting surface strut member; 2) a plurality of bars are spliced into described reflecting surface strut member; 3) with described reflecting surface attached on the reflecting surface strut member that constitutes by a plurality of bars to form described reflector; 4) described reflector is installed on the support portion of arc of described reflector holder, the support portion of the arc by reflector holder is defined as the arcuate shape consistent with described support portion with the shape of reflector; 5) described thermal-collecting tube is positioned on the focal line of cambered surface of described reflector; 6) described sun locating system is installed.
According to a further aspect in the invention, in the step 4) of said method, by bonding or crimping described reflector is installed on the support portion of arc of described reflector holder.
The present invention also provides a kind of Solar Energy Heat Utilization System that comprises above-mentioned trough type solar heat-collector, and this Solar Energy Heat Utilization System can comprise solar refrigeration and heating system, solar energy domestic water system, solar heat power generation system etc.
According to the present invention,, the distortion that global formation optically focused cambered surface brings and the problem of poor stability have been avoided because the reflector of trough type solar heat-collector is spliced by a plurality of bars.And bar can be made by modes such as extrusion modlings, need be in the global formation technology equipment and the mould of required costliness, can significantly reduce manufacturing cost.
Description of drawings
Fig. 1 shows a general assembly schematic diagram according to trough type solar heat-collector of the present invention.
Fig. 2 is the partial enlarged view at A place among Fig. 1.
Fig. 3 is the local structure schematic diagram according to reflector of the present invention.
Fig. 4 is the shape schematic diagram of the reflector according to one embodiment of the present invention when not being installed on the reflector holder.
Fig. 5 is the schematic diagram of reflector shown in Figure 4 shape when being installed on the reflector holder.
Fig. 6 is the schematic diagram of the shape of the reflector of another embodiment according to the present invention when being installed on the reflector holder.
Fig. 7 is the partial enlarged view at the reflector B place of Fig. 6.
Fig. 8-19 shows the part type according to the cross sectional shape of the bar of reflecting surface strut member of the present invention.
Figure 20 utilizes according to the solar airconditioning of trough type solar heat-collector of the present invention and the schematic diagram of heating system or solar energy domestic water system.
Figure 21 is the schematic diagram that utilizes according to the solar heat power generation system of trough type solar heat-collector of the present invention.
The specific embodiment
Engaging accompanying drawing below describes in detail according to the specific embodiment of the present invention.By the detailed description that is hereinafter provided also in conjunction with the accompanying drawings, other applications of the present invention will become clearer.Should be appreciated that these are described in detail and specific embodiment only is to be used for explaining rather than being used for limiting scope of the present invention.
Fig. 1 shows the schematic diagram according to the trough type solar heat-collector 1 of one embodiment of the present invention.As shown in Figure 1, trough type solar heat-collector 1 according to the present invention can comprise: thermal-collecting tube 10, reflector 20, reflector holder 30 and sun locating system 40.
Thermal-collecting tube 10 shown in Figure 1 can be a vacuum heat collection pipe, and for example all-glass vacuum thermal-collecting tube, hot pipe type vacuum heat collection pipe etc. also can be the thermal-collecting tubes of other types.
The cross sectional shape of bar 23 shown in Figure 3 is the rectangle of hollow, yet the shape of bar of the present invention is not limited thereto.Fig. 8-19 shows some examples of the cross sectional shape that can be applicable to bar of the present invention, and these shapes comprise circle, square, rectangle, U-shaped, " mountain " font, " worker " font and other cross sectional shapes that jog is arranged at side.The shape of the existing hollow of cross sectional shape of the bar shown in the figure (shown in Fig. 8-17) also has the cross sectional shape (shown in Figure 18-19) of non-hollow.The present invention preferably adopts the cross sectional shape of hollow, because this cross sectional shape can alleviate the weight of bar, the intensity of increase bar, and can reduce the distortion of the reflecting surface strut member that is made of bar thus.
Reflecting surface 20 shown in Fig. 3,4 and 5 is the monoblock type reverberation of single flexible, its by bonding or other modes attached on the reflecting surface strut member 22 that constitutes by bar 23.The monoblock type reverberation is preferably glass mirror, reflectance coating, aluminium mirror, bronze mirror or the stainless steel mirror that thickness is less than or equal to 3 millimeters.Preferably low iron glass mirror of above-mentioned glass mirror or ultra-clear glasses mirror.Yet shown in Fig. 6 and 7, reflecting surface 20 also can be made of a plurality of strip reverberations.In the embodiment shown in Fig. 6 and 7, preferably the width of each strip reverberation is less than the diameter of thermal-collecting tube 10.The width of each strip reverberation can be identical with the width of bar 23, also can be inequality.
As illustrated in fig. 1 and 2, trough type solar heat-collector 1 also comprises the reflector holder 30 that is used for supporting reflex device 20.Reflector holder 30 comprises the arc of the shape that is used to limit flexible reflector 20 or parabola shaped support portion 31.In Fig. 1 and 2, support portion 31 is the arc or the parabola shaped draw-in groove at the position that is arranged on reflector holder 30 and contacts with reflector.The cross sectional shape that partial enlarged view among Fig. 2 shows draw-in groove is " worker " font, however the shape of draw-in groove be not limited thereto, also can be U-shaped or T shape or other shapes.Support portion 31 according to the present invention also is not limited to the draw-in groove form, but can comprise any supporting form that the shape of reflector 20 can be defined as parabolic shape.
In trough type solar heat-collector shown in Figure 11, four less reflectors 20 have been formed a bigger reflector, yet in the present invention, the compound mode of reflector is not limited thereto, it can comprise more multiple reflection device, also can be made of single reflector on the contrary.In addition, a plurality of trough type solar heat-collectors 1 also can make up by series connection or parallel way.
Sun locating system 40 shown in Figure 1 comprises drive system (not shown) and control system (not shown), described drive system comprises oil cylinder (not shown) and hydraulic power unit (not shown), and described control system comprises heat collector position sensor (not shown) and logic controller (not shown).Wherein logic controller can be according to longitude and latitude and the date and the position that calculates the sun constantly of locality, drive system can be regulated trough type solar heat-collector according to the positional information of the sun that calculates, make the flute profile parabola can accurately aim at the sun, the incident light with the sun focuses on the paraboloidal focal line by reflector thus.
Preferably, single above-mentioned hydraulic power unit can drive a plurality of oil cylinders respectively, the heat collector row that each oil cylinder can drive single described trough type solar heat-collector or is in series by a plurality of described trough type solar heat-collectors.Preferably, the heat collector position sensor comprises rotary encoder, obliquity sensor or grating chi.Preferably, can carry out signal with frame for movement from the signal of described heat collector position sensor and amplify, be used to improve the settled date precision of described trough type solar heat-collector.Preferably, above-mentioned frame for movement is made of the drive with different-diameter.
The present invention also provides a kind of method of making above-mentioned trough type solar heat-collector 1, comprises the steps: to form a plurality of bars 23 of reflecting surface strut member 22; A plurality of bars 23 are spliced into reflecting surface strut member 22; With reflecting surface 21 attached on the reflecting surface strut member 22 that constitutes by a plurality of bars 23 to form reflector 20; Reflector 20 is installed on the support portion 31 of arc of reflector holder 30, the support portion 31 of the arc by reflector holder 30 is defined as the arcuate shape consistent with support portion 31 with the shape of reflector 20; Thermal-collecting tube 10 is positioned on the focal line of cambered surface of reflector 20; Sun locating system 40 is installed.
In the step of a plurality of bars 23 of above-mentioned formation reflecting surface strut member 22, can form bar 23 by extruding forming method with specific sectional shape.Above-mentioned with reflecting surface 21 attached to the reflecting surface strut member 22 that constitutes by a plurality of bars 23 on the step that forms reflector 20 in, can be by bonding, crimping or other connected modes with reflecting surface 21 attached on the reflecting surface strut member 22.
Figure 20 shows solar refrigeration heating and the domestic water system of a utilization according to trough type solar heat-collector of the present invention.As shown in figure 20, this solar refrigeration heating and domestic water system comprise 41, one air-conditioner hosts of a heat collector 42, heating and heat exchange equipment 43, domestic hot-water's heat storage can 44, a thermal source pump 45 and an expansion drum 46.Heat collector 41 is collected solar energy and is heated heat-transfer working medium, heat-transfer working medium is supplied with air-conditioner host 42 and heating and heat exchange equipment 43 respectively after expansion drum 46 bufferings, flow through after heat-transfer working medium does work in air-conditioner host 42 and heating and heat exchange equipment 43 domestic hot-water's heat storage can 44 and thermal source pump 45 return heat collector 41 then and finish a circulation.Air-conditioner host 42 all is connected with a return pipe b with a feed pipe a with heating and heat exchange equipment 43.
Figure 21 shows the solar heat power generation system of a utilization according to trough type solar heat-collector of the present invention.As shown in figure 21, this solar heat power generation system comprises a heat collector 51, heat generating heat storage can 52, a thermal source pump 53 and an expansion drum 54.Heat collector 51 is collected solar energy and is heated heat-transfer working medium, heat-transfer working medium is sent into heat generating heat storage can 52 after expansion drum 54 bufferings, the heat that heat generating heat storage can 52 stores produces steam and promotes the generating of Turbo-generator Set (not shown) by the heat exchanger (not shown) subsequently.Heat-transfer working medium after the acting returns heat collector 51 and finishes a circulation through thermal source pump 53.
Figure 20,21 only shows utilization some embodiment according to the Solar Energy Heat Utilization System of trough type solar heat-collector of the present invention, but Solar Energy Heat Utilization System is not limited to these embodiment shown in the figure.
Claims (22)
1. trough type solar heat-collector, comprise thermal-collecting tube, reflector, reflector holder and sun locating system, described reflector comprises reflecting surface and reflecting surface strut member, described reflecting surface is attached on the described reflecting surface strut member, described reflecting surface be shaped as arc, described sun locating system is used to guarantee that described reflector focuses sunshine at described thermal-collecting tube, is characterized in that, described reflecting surface strut member is made of a plurality of bars.
2. trough type solar heat-collector as claimed in claim 1 is characterized in that, the ratio of the length of described bar and cross-sectional shape girth was more than or equal to 5: 1.
3. trough type solar heat-collector as claimed in claim 1 is characterized in that the length direction of described bar is along the axis direction of described thermal-collecting tube.
4. trough type solar heat-collector as claimed in claim 2 is characterized in that, the width of described bar is less than or equal to 100 millimeters.
5. trough type solar heat-collector as claimed in claim 1 is characterized in that, described bar is a hollow structure.
6. trough type solar heat-collector as claimed in claim 1 is characterized in that, the combination of described bar can bend to cambered surface to constitute described reflecting surface strut member.
7. trough type solar heat-collector as claimed in claim 1 is characterized in that described reflector holder comprises the support portion of an arc, is used to limit the shape of described reflecting surface strut member.
8. trough type solar heat-collector as claimed in claim 7 is characterized in that, the support portion of described reflector holder is a draw-in groove.
9. trough type solar heat-collector as claimed in claim 8 is characterized in that, the cross sectional shape of described draw-in groove comprises " worker " font, U-shaped or T shape.
10. trough type solar heat-collector as claimed in claim 1 is characterized in that, described reflecting surface is made of the strip reverberation of a plurality of width less than the thermal-collecting tube diameter.
11. trough type solar heat-collector as claimed in claim 1 is characterized in that, described reflecting surface is the monoblock type reverberation attached to the flexibility on the reflecting surface strut member.
12. trough type solar heat-collector as claimed in claim 11 is characterized in that, described monoblock type reverberation comprises that thickness is less than or equal to 3 millimeters glass mirror, reflectance coating, aluminium mirror, bronze mirror or stainless steel mirror.
13., it is characterized in that described arc comprises parabola shaped as each described trough type solar heat-collector among the claim 1-12.
14. as each described trough type solar heat-collector among the claim 1-12, it is characterized in that, described sun locating system comprises drive system and control system, and described drive system comprises oil cylinder and hydraulic power unit, and described control system comprises heat collector position sensor and logic controller.
15. trough type solar heat-collector as claimed in claim 14, it is characterized in that, single described hydraulic power unit can drive a plurality of oil cylinders respectively, the heat collector row that each oil cylinder can drive single described trough type solar heat-collector or is in series by a plurality of described trough type solar heat-collectors.
16. trough type solar heat-collector as claimed in claim 14 is characterized in that, described heat collector position sensor comprises rotary encoder, obliquity sensor or grating chi.
17. trough type solar heat-collector as claimed in claim 16 is characterized in that, carries out signal from described heat collector position sensor signal with frame for movement and amplifies, and is used to improve the settled date precision of described trough type solar heat-collector.
18. trough type solar heat-collector as claimed in claim 17 is characterized in that, described frame for movement is made of the different drive of diameter.
19. the method for each described trough type solar heat-collector comprises the steps: among manufacturing such as the claim 1-18
1) a plurality of bars of the described reflecting surface strut member of formation;
2) a plurality of bars are spliced into described reflecting surface strut member;
3) with described reflecting surface attached on the reflecting surface strut member that constitutes by a plurality of bars to form described reflector;
4) described reflector is installed on the support portion of arc of described reflector holder, the support portion of the arc by reflector holder is defined as the arcuate shape consistent with described support portion with the shape of reflector;
5) described thermal-collecting tube is positioned on the focal line of cambered surface of described reflector;
6) described sun locating system is installed.
20. method as claimed in claim 19 is characterized in that, in above-mentioned steps 5) in, by bonding or crimping described reflector is installed on the support portion of arc of described reflector holder.
21. a Solar Energy Heat Utilization System is characterized in that, comprises as each described trough type solar heat-collector among the claim 1-18.
22. Solar Energy Heat Utilization System as claimed in claim 21 is characterized in that, described Solar Energy Heat Utilization System comprises solar refrigeration and heating system, solar energy domestic water system, solar heat power generation system.
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| CN201010173595A CN101846406A (en) | 2010-05-17 | 2010-05-17 | Trough type solar heat collector, manufacture method thereof and solar heat utilization system |
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| CN201010173595A CN101846406A (en) | 2010-05-17 | 2010-05-17 | Trough type solar heat collector, manufacture method thereof and solar heat utilization system |
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Cited By (8)
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| CN102116470A (en) * | 2011-02-18 | 2011-07-06 | 南京科远自动化集团股份有限公司 | Solar energy steam superheater |
| CN102213815A (en) * | 2011-05-20 | 2011-10-12 | 中国科学院电工研究所 | Reflector bracket of slotted solar thermal collector |
| CN102298192A (en) * | 2011-08-19 | 2011-12-28 | 中广核太阳能开发有限公司 | Forming process for reflecting mirror of trench type solar thermal collector and product thereof |
| CN102298191A (en) * | 2011-08-19 | 2011-12-28 | 中广核太阳能开发有限公司 | Reflecting mirror of trench type solar thermal collector and forming process thereof |
| CN104176373A (en) * | 2014-08-01 | 2014-12-03 | 湖南红太阳新能源科技有限公司 | Supporting frame for flexible thin-film materials |
| CN106016793A (en) * | 2016-07-08 | 2016-10-12 | 张正文 | Trough type solar support based on principle of gravity and mounting method of support |
| CN106595078A (en) * | 2016-12-20 | 2017-04-26 | 何斌 | Solar-tracking-free panel-concentrating solar heat collector capable of storing heat and method for fixing reflection plate of solar-tracking-free panel-concentrating solar heat collector capable of storing heat |
| CN107830644A (en) * | 2017-11-05 | 2018-03-23 | 彭忠祥 | A kind of slot type uniform condensing mirror system |
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| CN106016793A (en) * | 2016-07-08 | 2016-10-12 | 张正文 | Trough type solar support based on principle of gravity and mounting method of support |
| CN106016793B (en) * | 2016-07-08 | 2018-08-07 | 张正文 | A kind of groove type solar holder and its installation method based on gravity principle |
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