CN202630489U - Straight-through-type solar vacuum heat collecting pipe - Google Patents
Straight-through-type solar vacuum heat collecting pipe Download PDFInfo
- Publication number
- CN202630489U CN202630489U CN 201220304744 CN201220304744U CN202630489U CN 202630489 U CN202630489 U CN 202630489U CN 201220304744 CN201220304744 CN 201220304744 CN 201220304744 U CN201220304744 U CN 201220304744U CN 202630489 U CN202630489 U CN 202630489U
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- Prior art keywords
- pipe
- vacuum
- heat collecting
- straight
- type solar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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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- Thermal Insulation (AREA)
Abstract
The utility model discloses a straight-through-type solar vacuum heat collecting pipe which comprises a metal pipe, wherein the outer wall of the metal pipe is provided with a solar energy absorption coating; a vacuum glass pipe is sleeved out of the metal pipe; a seal ring is arranged on a position between the metal pipe and the vacuum glass pipe and close to two ends, and an annular sealed cavity is formed. According to the straight-through-type solar vacuum heat collecting pipe, by adopting the structure, the heat collecting effect of the heat collecting pipe is improved effectively; the structure of the vacuum pipe is adopted to replace the structure of a single-layer glass pipe, the temperature preservation performance is improved effectively; vacuum is not required to be formed in the sealed cavity, and thus nitrogen can be filled, the solar energy absorption coating at the outer layer of the metal pipe is protected effectively, the coating attenuation is slowed down, and the vacuum pipe is convenient to machine on a large scale; and compared with the relatively high seal technology in the prior art, for the straight-through-type solar vacuum heat collecting pipe, the whole production difficulty is also lowered.
Description
Technical field
The utility model relates to a kind of vacuum heat collection pipe, particularly a kind of straight-through type solar energy vacuum heat collecting tube.
Background technology
Vacuum heat collection pipe extensively applies in the solar steam generating etc. elevated temperature heat and utilizes the field, and existing technology is at a glass tube of metal tube overcoat (individual layer), adopts unique Sealing Technology that glass tube and metal tube are fixed, and vacuum layer is processed in the centre.But receive the difference of metal, glass and seal member material properties and their thermal coefficient of expansions, cause vacuum not high also unstable, and production cost is high especially, is not suitable for large-scale promotion application.
Summary of the invention
The utility model technical problem to be solved provides a kind of straight-through type solar energy vacuum heat collecting tube, can significantly improve the Heat-collecting effect of thermal-collecting tube, further, can effectively protect the outer solar energy absorbing coating of metal tube.
For solving the problems of the technologies described above; The technical scheme that the utility model adopted is: a kind of straight-through type solar energy vacuum heat collecting tube; Comprise metal tube, the metal tube outer wall is provided with solar energy absorbing coating, and metal tube is with glass tube with vacuum outward; Position near two ends between metal tube and the glass tube with vacuum is provided with sealing ring, and forms the closed cavity of an annular.
Be filled with nitrogen in the described closed cavity.
Also be provided with a plurality of buffering spacers between described metal tube and the glass tube with vacuum.
A kind of straight-through type solar energy vacuum heat collecting tube that the utility model provides through adopting above-mentioned structure, has effectively promoted the Heat-collecting effect of thermal-collecting tube.Adopted the structure of the alternative single-glass pipe of structure of vacuum tube, effectively improved heat-insulating property, because need not in closed cavity, form vacuum again; Thereby can fill nitrogen; Effectively protected the solar energy absorbing coating of metal tube outer wall, delayed the coating decay, and vacuum tube is convenient to processing in enormous quantities; Higher sealing technology requirement in the prior art has also reduced whole production difficulty.
The utility model can be applied to that high temperature utilizes the field in the solar energy.Need perhaps adopt stainless steel tube to substitute the thickening of aluminum metal tube tube wall, to increase the compression strength of metal tube.Also can be applied to the solar water heater industry.Through changing the prior solar water heater circulation theory; Promptly adopt the systemic circulation after water is heated to replace original partial circulating (hydrocone type circulation), significantly improve the heating performance of water heater, simultaneously; Washing away of recirculated water; Well solved the problem of vacuum tube fouling, and incrustation scale can be easy to be eliminated through the bottom water tank.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is described further:
Fig. 1 is the structural representation of the utility model, has adopted simplified painting among the figure, because of two-end structure is identical, only draws the structure of an end.
Among the figure: metal tube 1, sealing ring 2, annular groove 3, glass tube with vacuum 4, closed cavity 5, buffering spacer 6.
The specific embodiment
In Fig. 1, a kind of straight-through type solar energy vacuum heat collecting tube comprises metal tube 1, and the metal tube 1 in this example adopts aluminum, and the inwall of metal tube 1 has carried out oxidation or coating film treatment, and metal tube 1 outer wall is provided with solar energy absorbing coating.The coating that adopts in this example is " aluminium-nitrogen/aluminium solar selectively absorbing coating ", adopts aluminum metal tube heat conductivility good; Through magnetron sputtering technique, be easy to plate " aluminium-nitrogen/aluminium solar selectively absorbing coating ".The aluminum metal aboundresources is easy to processing, and cost and cost are cheap relatively.It is higher that the aluminum metal pipe is recycled value, and reusable.Certainly, in some occasion, for example higher to bearing requirements occasion also can adopt stainless steel.
The metal tube 1 outer glass tube with vacuum 4 that is with; Position near two ends between metal tube 1 and the glass tube with vacuum 4 is provided with sealing ring 2; Shown in figure; Usually at metal tube 1 outer wall one annular groove 3 is set, sealing ring 2 places in the annular groove 3, and between the inwall of metal tube 1 outer wall and glass tube with vacuum 4, forms the closed cavity 5 of an annular.
Be filled with nitrogen in the described closed cavity 5.The nitrogen of filling can effectively be protected " aluminium-nitrogen/aluminium solar selectively absorbing coating ", delays the rate of decay of solar energy absorbing coating.
Also be provided with a plurality of buffering spacers 6 between described metal tube 1 and the glass tube with vacuum 4.Buffering spacer 6 in this example adopts wire quality, is used for load-bearing.
Claims (3)
1. straight-through type solar energy vacuum heat collecting tube; Comprise metal tube (1); Metal tube (1) outer wall is provided with solar energy absorbing coating; It is characterized in that: metal tube (1) is outer to be with glass tube with vacuum (4), and the position near two ends between metal tube (1) and the glass tube with vacuum (4) is provided with sealing ring, and forms the closed cavity (5) of an annular.
2. a kind of straight-through type solar energy vacuum heat collecting tube according to claim 1 is characterized in that: described closed cavity is filled with nitrogen in (5).
3. a kind of straight-through type solar energy vacuum heat collecting tube according to claim 1 is characterized in that: also be provided with a plurality of buffering spacers (6) between described metal tube (1) and the glass tube with vacuum (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220304744 CN202630489U (en) | 2012-06-28 | 2012-06-28 | Straight-through-type solar vacuum heat collecting pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220304744 CN202630489U (en) | 2012-06-28 | 2012-06-28 | Straight-through-type solar vacuum heat collecting pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202630489U true CN202630489U (en) | 2012-12-26 |
Family
ID=47383684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220304744 Expired - Fee Related CN202630489U (en) | 2012-06-28 | 2012-06-28 | Straight-through-type solar vacuum heat collecting pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202630489U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315808A (en) * | 2014-10-10 | 2015-01-28 | 无锡环特太阳能科技有限公司 | Large-diameter through heat collection pipe type solar drying machine |
-
2012
- 2012-06-28 CN CN 201220304744 patent/CN202630489U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315808A (en) * | 2014-10-10 | 2015-01-28 | 无锡环特太阳能科技有限公司 | Large-diameter through heat collection pipe type solar drying machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20150628 |
|
| EXPY | Termination of patent right or utility model |