CN102607203A - Chained high-temperature solar collector tube - Google Patents
Chained high-temperature solar collector tube Download PDFInfo
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- CN102607203A CN102607203A CN2012100554499A CN201210055449A CN102607203A CN 102607203 A CN102607203 A CN 102607203A CN 2012100554499 A CN2012100554499 A CN 2012100554499A CN 201210055449 A CN201210055449 A CN 201210055449A CN 102607203 A CN102607203 A CN 102607203A
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- storage unit
- heat
- thermal storage
- chain type
- vacuum glass
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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 relates to a chained high-temperature solar collector tube. Two end bases (3) are disposed at two ends of a double-layer vacuum glass tube (2) respectively. A flange (4) is disposed at the outer end of each end base (3). An extension round tube (5) is disposed at the outer end of each flange (4). Metal support bars (6) penetrate through the double-layer vacuum glass tube (2), the end bases (3), the flanges (4) and the extension round tubes (5). Two ends of each metal support bar (6) are fastened to the outer ends of the extension round tubes (5) through nuts and bolts (7). A heat-storage unit section (1) is fastened in the double-layer vacuum glass tube (2) by using three metal support bars (6) as a guide. By using the chained high-temperature solar collector tube, the technical problem of sealing of anisotropic glassy metal of a traditional high-temperature collector tube is solved. The high temperature of more than 380 DEG C can be obtained, and the shortages of solar high-temperature utilization are made up.
Description
Technical field
The invention belongs to a kind of solar energy utilization technique, specifically is to propose a kind of high-temperature heat-collection pipe that adopts chain structure.
Background technology
The trough type solar power generation technology is a kind of solar energy thermal-power-generating technology of main flow, and solar energy heat collection pipe is the key device in the business-like core technology of trough type solar power generation technology.
The solar collector pipe kind is numerous, but can be used for the hot technical field of power generation of solar groove type, has only metal absorber vacuum tube, because this kind thermal-collecting tube should high temperature resistant environment, has the performance of pressure-bearing again.The structure main feature of this metal absorber vacuum heat-pipe is to adopt the metal tube of dual-end, and the metal tube outer wall has the high-temperature selective solar energy absorbing coating, is high vacuum between metal tube and the outer layer glass tube.But because the thermal coefficient of expansion of metal and glass differs bigger, the stress that they are produced in environmental change is also different, and the attaching parts between metal tube and the glass are easy to damage like this, and therefore high temperature resistant problem is a difficult point of thermal-collecting tube technical development.
In addition, under the high-temperature condition about 400 ℃, when adopting conduction oil to be heat-transfer working medium, the vacuum reliability of this thermal-collecting tube and actual life variation because can occur oozing the hydrogen phenomenon, destroyed the vacuum of thermal-collecting tube at the thermal-arrest tube wall.With water as the difficult high temperature that reaches 400 ℃ of heat-transfer working medium.For the research of metal absorber thermal-collecting tube, though existing abroad certain achievement, domestic imitated, exploration, the experimental stage of also being in.
Summary of the invention
Technical problem:The purpose of this invention is to provide a kind of novel chain type solar energy high-temperature heat collection pipe, this design has avoided high-temperature heat-collection pipe in the tradition need face the technical barrier of this unlike material sealing-in of glass metal.Guarantee to reach the high temperature more than 380 ℃, remedy solar energy in the deficiency of high temperature aspect utilizing.
Technical scheme:Chain type high-temperature heat-collection pipe of the present invention comprises thermal storage unit joint, dual-layer vacuum glass pipe, end seat, ring flange, extension pipe section, metallic support rod, nut and bolt; Wherein, Be respectively equipped with an end seat at the two ends of dual-layer vacuum glass pipe; Outer end in end seat is provided with ring flange, is provided with in the outer end of ring flange to extend the pipe section, and metallic support rod is passed dual-layer vacuum glass pipe, end seat, ring flange, extension pipe section; Its two ends are by nut and the outer end that is bolted to extension pipe section, and the thermal storage unit joint is fixed in the dual-layer vacuum glass pipe as guide rail by three metallic support rod.
Described thermal storage unit joint comprises metal tube, heat storage medium, metal end, is respectively equipped with a metal end at the two ends of metal tube, in metal tube, is provided with heat storage medium.
Described thermal storage unit joint is emitted between three metallic support rod by a plurality of thermal storage unit joints in proper order to be formed.
The length of described each thermal storage unit joint is 30cm, and the outer surface of thermal storage unit joint has enhancing to the absorption of sunshine and the coating that reduces to reflect.
Described two end seat are material with the pottery, select the SiO of ceramic material for use
2Content should be close with used dual-layer vacuum glass pipe, and is similar with the coefficient of expansion of glass because of pottery like this, avoided the high temperature problem of generation stress down.
Heat storage medium is heat storage medium with KCl-LiCl, and wherein the mass fraction of KCl is 62%.
Beneficial effect:
1. only used being connected of pottery and glass among the present invention, dealt with a glass that traditional solar energy heat collection pipe exists and the sealing-in difficult problem between metal tube, thereby improve hear resistance, remedied the deficiency of solar energy in the high temperature utilization.
2. adopt phase-change heat-storage material simultaneously, the heat that phase transformation absorbs is big, and with conduction oil that is adopted in the conventional art or water ratio, the density of heat-source energy also is improved.
3. the present invention has resistant to elevated temperatures character, has improved the heat-source energy quality of thermal-collecting tube, and the scope of application is wider.
Description of drawings
Fig. 1 is an overall structural representation of the present invention;
Fig. 2 is the vertical view of ceramic base;
Fig. 3 is the vertical view of ring flange;
Fig. 4 is the sketch map of thermal storage unit joint;
Have among the figure: thermal storage unit joint 1, metal tube 10, heat storage medium 11, metal end 12, dual-layer vacuum glass pipe 2, end seat 3, ring flange 4 extends pipe section 5, metallic support rod 6, nut and bolt 7.
The specific embodiment
The present invention is through realize like this; Metal tube is divided into some thermal storage unit joints 1; Encapsulation can be carried out the heat storage medium 11 of phase-transition heat-storage in every joint; Be used to absorb and store thermal-collecting tube outer wall coating and carry out the heat energy after sunlight heat transforms, again more piece thermal storage unit joint 1 is linked to be among the metallic support rod 6 that chain is positioned to be processed by three Metallic rod, can slide before and after it.Its external application dual-layer vacuum glass pipe 2 is made overcoat, guarantees good heat-insulating property.Use a thermal conductivity factor to fix two ends at last less than 0.6 λ/[W/mk] end seat 3; Two ends also are fixed on the metallic support rod 6 that Metallic rod is processed on the extension pipe section 5 of flange extension through screw and bolt 7 with ring flange 4 spacing chain type thermal storage unit joints 1 simultaneously.
After the design, under irradiation of sunlight, the metal tube 10 with coating absorbs heat more than adopting, and heat storage medium 11 heat absorptions undergo phase transition, and after device reaches required high temperature, an end is opened taking-up chain type thermal storage unit joint 1, puts into low-temperature receiver and carries out heat release.
Two end seat 3 of thermal-collecting tube are material with the pottery, to have avoided under the high temperature because of the different problems that produce stress of the coefficient of expansion.The outside of two ends ceramic base is equipped with ring flange 4 respectively with the fixing metal support bar.Metal guide rail is fixed on the flange by screw, its concrete technology such as following.Have the pipe of extension section 5 to stretch out in a side of flange, whenever on the pipe section 5 attacked screw thread at a distance from 120 ° extending, holing in the end of metal guide rail, has attacked internal thread in the hole, thus, links to each other through screw with metal guide rail in end flange.
Thermal storage unit saves 1 outside has coating to absorb, reduce reflection so that sunshine is strengthened, and inner heat storage medium 11 is selected the higher fused salt of fusing point for use, and as adopting KCl-LiCl as heat storage medium, wherein the mass fraction of KCl is 62%, and its phase transition temperature is 380 ℃.Thermal storage unit joint 1 adopts a section chain structure, after regenerator temperature reaches, the unit joint is fetched into outside heat release from thermal-collecting tube.
The invention belongs to a kind of solar energy utilization technique, specifically is to propose a kind of high-temperature heat-collection pipe that adopts chain structure.This chain type high-temperature heat-collection pipe is a heat storage medium with the KCl-LiCl of 380 ℃ of phase transition temperatures, with dual-layer vacuum glass pipe 2 in chemical composition SiO
2The end seat 3 that content is similar; Adopt chain structure; Metallic support rod 6 is fixed on the extension pipe section 5 of end seat 3 through nut and bolt 7; The thermal storage unit joint is placed on the metallic support rod 6, is taken out to the low-temperature receiver heat release after accumulation of heat finishes, and has realized accumulation of heat and the utilization of solar energy heat collection pipe under higher temperature.
Claims (6)
1. a chain type high-temperature heat-collection pipe is characterized in that this chain type high-temperature heat-collection pipe comprises thermal storage unit joint (1), dual-layer vacuum glass pipe (2), end seat (3), ring flange (4), extends pipe section (5), metallic support rod (6), nut and bolt (7); Wherein, Be respectively equipped with an end seat (3) at the two ends of dual-layer vacuum glass pipe (2); Be provided with ring flange (4) in the outer end of end seat (3); Be provided with extension pipe section (5) in the outer end of ring flange (4); Metallic support rod (6) is passed dual-layer vacuum glass pipe (2), end seat (3), ring flange (4), is extended pipe section (5), and its two ends are fixed on the outer end of extending pipe section (5) by nut and bolt (7), and thermal storage unit joint (1) is fixed in the dual-layer vacuum glass pipe (2) as guide rail by three metallic support rod (6).
2. chain type high-temperature heat-collection pipe according to claim 1; It is characterized in that described thermal storage unit joint (1) comprises metal tube (10), heat storage medium (11), metal end (12); Be respectively equipped with a metal end (12) at the two ends of metal tube (10), in metal tube (10), be provided with heat storage medium (11).
3. chain type high-temperature heat-collection pipe according to claim 2 is characterized in that described thermal storage unit joint (1) is emitted between three metallic support rod (6) by a plurality of thermal storage unit joints in proper order to form.
4. chain type high-temperature heat-collection pipe according to claim 3 is characterized in that the length of described each thermal storage unit joint (1) is 30cm, and the outer surface of thermal storage unit joint has enhancing to the absorption of sunshine and the coating that reduces to reflect.
5. chain type high-temperature heat-collection pipe according to claim 3 is characterized in that described two end seat (3) are material with the pottery, select the SiO of ceramic material for use
2Content should be close with used dual-layer vacuum glass pipe (2), and is similar with the coefficient of expansion of glass because of pottery like this, avoided the high temperature problem of generation stress down.
6. a kind of chain type high-temperature heat-collection pipe according to claim 2 is characterized in that: heat storage medium (11) is heat storage medium with KCl-LiCl, and wherein the mass fraction of KCl is 62%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100554499A CN102607203A (en) | 2012-03-06 | 2012-03-06 | Chained high-temperature solar collector tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100554499A CN102607203A (en) | 2012-03-06 | 2012-03-06 | Chained high-temperature solar collector tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102607203A true CN102607203A (en) | 2012-07-25 |
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ID=46524820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100554499A Pending CN102607203A (en) | 2012-03-06 | 2012-03-06 | Chained high-temperature solar collector tube |
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| Country | Link |
|---|---|
| CN (1) | CN102607203A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1321865A (en) * | 2001-05-29 | 2001-11-14 | 清华大学 | Glass-metal vacuum solar heat-collecting tube and its production method |
| CN2566193Y (en) * | 2002-07-12 | 2003-08-13 | 清华大学 | Double-through glass-metal vacuum solar heat collecting pipe with direct compensation internal pipe |
| CN2715054Y (en) * | 2004-08-06 | 2005-08-03 | 姜成华 | Glass vacuum solar heat collecting tube with metallic inner tube |
| JP2005257141A (en) * | 2004-03-10 | 2005-09-22 | Matsushita Electric Ind Co Ltd | Solar system and its operation method |
| CN201652954U (en) * | 2010-04-29 | 2010-11-24 | 南京嘉业新能源有限公司 | Trough solar vacuum collector tube with built-in expansion joints |
-
2012
- 2012-03-06 CN CN2012100554499A patent/CN102607203A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1321865A (en) * | 2001-05-29 | 2001-11-14 | 清华大学 | Glass-metal vacuum solar heat-collecting tube and its production method |
| CN2566193Y (en) * | 2002-07-12 | 2003-08-13 | 清华大学 | Double-through glass-metal vacuum solar heat collecting pipe with direct compensation internal pipe |
| JP2005257141A (en) * | 2004-03-10 | 2005-09-22 | Matsushita Electric Ind Co Ltd | Solar system and its operation method |
| CN2715054Y (en) * | 2004-08-06 | 2005-08-03 | 姜成华 | Glass vacuum solar heat collecting tube with metallic inner tube |
| CN201652954U (en) * | 2010-04-29 | 2010-11-24 | 南京嘉业新能源有限公司 | Trough solar vacuum collector tube with built-in expansion joints |
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Application publication date: 20120725 |