CN202419988U - Black steel solar heat collection pipe - Google Patents
Black steel solar heat collection pipe Download PDFInfo
- Publication number
- CN202419988U CN202419988U CN 201120504466 CN201120504466U CN202419988U CN 202419988 U CN202419988 U CN 202419988U CN 201120504466 CN201120504466 CN 201120504466 CN 201120504466 U CN201120504466 U CN 201120504466U CN 202419988 U CN202419988 U CN 202419988U
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- CN
- China
- Prior art keywords
- black steel
- layer
- solar collector
- heat collection
- absorbed layer
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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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Abstract
The utility model provides a heat collection pipe which is stable in structure, black in appearance and long in service life, is made of multiple composite materials and is used for a selective solar absorption coating. A black steel solar heat collection pipe comprises a glass vacuum pipe which mainly comprises an inner glass pipe and a cover glass pipe and the selective solar absorption coating which takes the inner glass pipe as a matrix; the heat collection pipe is characterized in that the selective solar absorption coating comprises a pure metal bottom layer, an absorption layer and an antireflection layer which are plated sequentially; the pure metal bottom layer is a structural layer which is plated by a nonreactive sputtering process in which a Cu target is used as a sputtering cathode; and the antireflection layer is an ALNXCYHZ multi-component homogeneous medium film which is plated by taking Al as the sputtering cathode under the condition of matched amounts of nitrogen, active gases and argon. The selective solar absorption coating is stable in structure, and heat efficiency is improved; a preparation method is simple, the heat collection pipe is low in production cost and high in production efficiency; and appearance is easy to control.
Description
Technical field
The utility model relates to a kind of black steel solar collector pipe that has with the composite preparation of many negative electrodes magnetron sputtering technology, multiple solar selectively absorbing coating composition, that have longer life, belongs to solar energy optical-thermal conversion using field.
Background technology
Along with the development of human sciences's technology and the raising of the level of the productive forces, the energy starved problem comes out gradually.The exhaustion day by day of traditional energy such as oil, natural gas etc. has limited human continuation development and progress.Nervous under the new situation at the global energy, exploitation solar energy not only economy but also environmental protection are to alleviate the energy-intensive new way.
Solar selectively absorbing coating is used to absorb the solar radiation of incident, and is converted into heat energy through the resonance spectrum transformation of metal and fine particle.The coating for selective absorption of thermal-collecting tube should be able to bear the temperature of higher temperatures; And ability long-term stable operation; (wavelength 0.3 ~ 2.5 μ m) has higher absorptance in the solar energy spectral limit, and (wavelength is 2.5 ~ 5.0 μ m) keeps lower heat emission ratio in infrared range of spectrum simultaneously.
What present domestic application was wider is the disclosed Al-N/Al graded films of Chinese patent CN85100142, and the characteristics of this coating are, adopts single Al target magnetically controlled DC sputtering plated film, and the absorptivity of coating can reach α ≈ 0.92, emissivity ≈ 0.06 (80 ℃).But it adopts grading structure, and the emissivity of coating is higher, and the temperature resistant capability of coating is relatively poor.
Be applied to the solar selectively absorbing coating of solar thermal utilization industry now; The inteferometer coating structures that adopt many negative electrodes magnetic control sputtering systems to prepare two-layer absorbed layer produce interference effect mutually because of the proportioning of metal ingredient is different between the two membranes more, have realized than higher absorptance of graded films and lower emission ratio; Be typically and utilize sputtering method to be coated with the Cu/SS-AlN/AlN coating for selective absorption; Like Chinese patent number is 96102331.7 patent, its absorptance α ≈ 0.92, emissivity ≈ 0.05 (100 ℃); But because the AlN deposition is lower, the plated film time is longer.
The thermal-collecting tube sealed-off technology that current most domestic manufacturer uses only limits at room temperature artificial sealed-off; Therefore the laminated vacuum during sealed-off shows that the interior vacuum of (about 100 ℃) interlayer has a long way to go when normally using with thermal-collecting tube; Be " virtual height " situation, can not guarantee the vacuum quality in the thermal-collecting tube use; And artificial sealed-off can not guarantee the quality stability that thermal-collecting tube is produced in batches because of bad phenomenon such as Personal Skills and the different easy generation batch mass discrepancies of qualification.
Summary of the invention
For the performance that improves current solar selectively absorbing coating, improve sputtering yield, shorten the production cycle, reduce production costs, guarantee the heat-collecting pipe vacuum quality and improve the presentation quality of thermal-collecting tube; It is a kind of constitutionally stable that the utility model provides, and has the thermal-collecting tube of appearance of black, multiple composite solar selectively absorbing coating that form, that have longer life.
The utility model completes like this:
A kind of black steel solar collector pipe; Comprise mainly the glass-vacuum tube that constitutes by inner glass tube and cover glass tube and be the slective solar energy absorbing coating of matrix with the inner glass tube; It is characterized in that: said slective solar energy absorbing coating comprises simple metal bottom, absorbed layer and the antireflection layer that is coated with successively, and wherein above-mentioned simple metal bottom is to be the structure sheaf that the non-reactive sputtering process of sputter cathode is coated with the Cu target; Antireflection layer is to be the ALN that sputter cathode is coated with under nitrogen, active gases and the argon gas condition of coupling amount with AL
XC
YH
ZMulticomponent homogeneous medium film.
Among the utility model embodiment, said absorbed layer is to be sputter cathode at the active gases of coupling amount and the argon gas SS-SS C that forms of sputtering sedimentation simultaneously with SS target and SS target
XH
YMetal-ceramic type selective absorbing film.
Among the utility model embodiment, said absorbed layer is that the low metal volume fraction absorbed layer by high metal volume fraction absorbed layer and its upper strata constitutes.
Among the utility model embodiment, active gases is methane or acetylene.
Among the utility model embodiment, metal back layer thickness is not less than 0.15 * 10
-6M, absorber thickness 0.06 * 10
-6M-0.15 * 10
-6M., antireflection layer thickness 0.05 * 10
-6M-0.1 * 10
-6M.
Among the utility model embodiment, also comprise the support that is positioned at sealed end, and on support, be provided with getter, and be provided with air-breathing minute surface at the sealed end medial surface.
Comprise that also being positioned at being used on the cover glass tube sidewall detects the vacuum gauge of vacuum interlayer vacuum.
The beneficial effect of the utility model:
1, this coating adopts Cu also to cooperate with absorbed layer as metal back layer, and anti-reflection layer adopts Al common reactive sputtering ALN in argon gas, active gases, nitrogen
XC
YH
ZMulticomponent homogeneous medium film is compared with gradual change coatings such as traditional Al-N/Al, SS-C/Cu, and this coating adopts double-deck interference coatings, has effectively reduced the emission ratio, compares the Al anti-reflection layer to have shortened 50-60%;
2, Al and hydrocarbon reaction obviously improve than Al-N deielectric-coating sedimentation rate, and coating process technology is easier to control, have improved the refractive index of coating simultaneously, and extinction coefficient is good than the a-CH film;
3, utilize the solar selectively absorbing coating absorptance of the method preparation can reach 0.94-0.96, emission is than ε≤0.05 (80 ℃); The vacuum long term maintenance is 3.0-5.0 * 10 in the interlayer
-3Pa (30 ℃); Appearance color is distinct reddish black.
4, coating structure is stable, and the thermal efficiency improves, and the preparation method is simple, low production cost, and production efficiency is high, and outward appearance is easy to control.
The utility model is advantage further:
Absorbed layer adopts the sputter under hydrocarbon gas and argon gas response situation of SS target to produce SS-SS C
XH
YMetal-ceramic type selective absorbing film is compared with traditional C u, SS, Al three target coatings, and absorbed layer adopts the single target sputter of SS, has introduced CH gas simultaneously as reacting gas, has improved the coating deposition efficiency.
Description of drawings
Fig. 1 is the structural representation of the black steel solar collector pipe of black steel of the utility model:
Fig. 2 is the structural representation of the slective solar energy absorbing coating of the utility model.
The specific embodiment
Understand for the ease of those skilled in the art, the utility model is done further explain below in conjunction with accompanying drawing and specific embodiment.
With reference to accompanying drawing 1; A kind of black steel solar collector pipe; Comprise mainly the glass-vacuum tube that constitutes by inner glass tube 1 and cover glass tube 4 and be the slective solar energy absorbing coating 2 of matrix with inner glass tube 1; Said slective solar energy absorbing coating comprises simple metal bottom 11, absorbed layer and the antireflection layer 12 that is coated with successively, and wherein above-mentioned simple metal bottom is to be the structure sheaf that the non-reactive sputtering process of sputter cathode is coated with the Cu target; Said absorbed layer is to be sputter cathode at the active gases of coupling amount and the argon gas SS-SS C that forms of sputtering sedimentation simultaneously with SS target and SS target
XH
YMetal-ceramic type selective absorbing film; Antireflection layer is to be the ALN that sputter cathode is coated with under nitrogen, active gases and the argon gas condition of coupling amount with AL
XC
YH
ZMulticomponent homogeneous medium film.
Said absorbed layer is that the low metal volume fraction absorbed layer 9 by high metal volume fraction absorbed layer 10 and its upper strata constitutes; Through height metallic element rate variance; Can obtain visible spectrum differing absorption district; The high zone of energy in the absorption spectrum as far as possible, two absorb between the subgrades proportioning that realizes the different metal ratio through the flow of regulating active gases.
Said active gases is methane or acetylene, and it is water that oxidation produces accessory substance, and it is convenient to remove, and gaseous state contains carbide, makes structure more stable.
Said metal back layer thickness is not less than 0.15 * 10
-6M, absorber thickness 0.06 * 10
-6M-0.15 * 10
-6M., antireflection layer thickness 0.05 * 10
-6M-0.1 * 10
-6M.
Consider practicality, the utility model also comprises the support 5 that is positioned at sealed end, and on support 5, is provided with getter 6, and is provided with air-breathing minute surface 7 at the sealed end medial surface.
In order to detect developmental tube vacuum interlayer vacuum, the utility model is provided with the vacuum gauge 8 that is used to detect vacuum interlayer vacuum being positioned on the cover glass tube sidewall.
Above embodiment only be used to explain the utility model technical scheme but not to its restriction; Although the utility model is specified through embodiment; Under the field personnel should make amendment or the part technical characterictic is equal to replacement with reference to the concrete mode of the utility model; But under the spirit that does not break away from the utility model technical scheme, above-mentioned change or be equal to replacement and should belong in the technical scheme scope that the utility model asks for protection.
Claims (6)
1. black steel solar collector pipe; Comprise mainly the glass-vacuum tube that constitutes by inner glass tube and cover glass tube and be the slective solar energy absorbing coating of matrix with the inner glass tube; It is characterized in that: said slective solar energy absorbing coating comprises simple metal bottom, absorbed layer and the antireflection layer that is coated with successively, and wherein above-mentioned simple metal bottom is to be the structure sheaf that the non-reactive sputtering process of sputter cathode is coated with the Cu target; Antireflection layer is to be the ALN that sputter cathode is coated with AL
XC
YH
ZMulticomponent homogeneous medium film.
2. according to the said black steel solar collector pipe of claim 1, it is characterized in that: said absorbed layer is to be the SS-SS C that the sputter cathode sputtering sedimentation forms with SS target and SS target
XH
YMetal-ceramic type selective absorbing film.
3. according to the said black steel solar collector pipe of claim 1, it is characterized in that: said absorbed layer is that the low metal volume fraction absorbed layer by high metal volume fraction absorbed layer and its upper strata constitutes.
4. according to claim 1 or 2 or 3 said black steel solar collector pipes, it is characterized in that: the simple metal underlayer thickness is not less than 0.15 * 10
-6M, absorber thickness 0.06 * 10
-6M-0.15 * 10
-6M., antireflection layer thickness 0.05 * 10
-6M-0.1 * 10
-6M.
5. according to claim 1 or 2 or 3 said black steel solar collector pipes, it is characterized in that: also comprise the support that is positioned at sealed end, and on support, be provided with getter, and be provided with air-breathing minute surface at the sealed end medial surface.
6. according to claim 1 or 2 or 3 said black steel solar collector pipes, it is characterized in that: comprise that also being positioned at being used on the cover glass tube sidewall detects the vacuum gauge of vacuum interlayer vacuum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120504466 CN202419988U (en) | 2011-12-07 | 2011-12-07 | Black steel solar heat collection pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120504466 CN202419988U (en) | 2011-12-07 | 2011-12-07 | Black steel solar heat collection pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202419988U true CN202419988U (en) | 2012-09-05 |
Family
ID=46744745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120504466 Expired - Fee Related CN202419988U (en) | 2011-12-07 | 2011-12-07 | Black steel solar heat collection pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202419988U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109534667A (en) * | 2018-12-20 | 2019-03-29 | 沧州天瑞星光热技术有限公司 | A kind of device and method being connect for vacuum gauge with collector tube glass outer tube |
-
2011
- 2011-12-07 CN CN 201120504466 patent/CN202419988U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109534667A (en) * | 2018-12-20 | 2019-03-29 | 沧州天瑞星光热技术有限公司 | A kind of device and method being connect for vacuum gauge with collector tube glass outer tube |
| CN109534667B (en) * | 2018-12-20 | 2024-03-05 | 北京天瑞星光热技术有限公司 | Device and method for connecting vacuum gauge pipe with heat collecting pipe glass outer pipe |
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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: 20120905 Termination date: 20141207 |
|
| EXPY | Termination of patent right or utility model |