CN202630479U - Vacuum degree-variable empty drying protection straight-through vacuum heat collecting element - Google Patents
Vacuum degree-variable empty drying protection straight-through vacuum heat collecting element Download PDFInfo
- Publication number
- CN202630479U CN202630479U CN 201220229515 CN201220229515U CN202630479U CN 202630479 U CN202630479 U CN 202630479U CN 201220229515 CN201220229515 CN 201220229515 CN 201220229515 U CN201220229515 U CN 201220229515U CN 202630479 U CN202630479 U CN 202630479U
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- CN
- China
- Prior art keywords
- glass tube
- inner glass
- vacuum heat
- adsorption material
- vacuum
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- 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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Abstract
The utility model discloses a vacuum degree-variable empty drying protection straight-through vacuum heat collecting element. The vacuum degree-variable empty drying protection straight-through vacuum heat collecting element is made of an inner glass tube of which the two ends are molten and sealed and a cover glass tube, and is characterized in that the non-light-facing surface of the inner glass tube is connected with an adsorption material in a low thermal resistance way; above a certain temperature, the adsorption material desorbs and emits gases; and below a certain temperature, the adsorption material adsorbs and absorbs the gases. The non-light-facing surface in the circumferential angle region of 140+/-5 degrees on the inner glass tube (2) is connected with an activated carbon fiber adsorption material (4) with the length of 200+/-10 mm in the low thermal resistance way by a steel wire clamp spring. When heat is collected normally, the surface temperature of the inner glass tube (2) does not exceed 90 DEG C, and the adsorption material avoids desorption. When the glass tube is in empty drying, the surface temperature of the inner glass tube (2) is very high, the adsorption material (4) desorbs and emits the gases, the vacuum degree of a vacuum heat insulation layer (3) is reduced, and heat is released to the environment through the gas in the vacuum heat insulation layer (3).
Description
Technical field
The utility model relates to the empty protection straight-through type vacuum heat collecting element that shines of variable vacuum.
Background technology
The logical all-glass vacuum thermal-collecting tube in existing a kind of two, is made with the mode of one section spring glass tube bridge joint at the other end because the excessive stresses that temperature contrast forms adopts cover glass tube and inner glass tube are at one end melted envelope for overcoming inner glass tube and cover glass tube.But spring glass tube bridge joint difficulty is high and stop up because of fouling easily.
Summary of the invention
The purpose of the utility model is to provide variable vacuum the empty protection straight-through type vacuum heat collecting element that shines.
The utility model solves the technical scheme that its technical problem is taked: through melt envelope inner glass tube and cover glass tube at two ends, process an empty protection straight-through type vacuum heat collecting element that shines of variable vacuum.Non-side to light low thermal resistance at said inner glass tube connects a sorbing material, perhaps some sorbing materials; Said sorbing material is reversible, and promptly when being higher than uniform temperature, said sorbing material generation desorb is also sent gas; When being lower than uniform temperature, absorption takes place and absorbs gas in said sorbing material.
Agreement: side to light is meant on the hard-wired solar collection element inner glass tube zone that can be shone by direct sunlight; Zone on the solar collection element inner glass tube except that side to light all is non-side to light.
The beneficial effect of the utility model: the non-side to light low thermal resistance at the all-glass vacuum thermal-collecting tube inner glass tube connects one or some sorbing materials; When sky shone, said sorbing material generation desorb was also sent gas, and the vacuum of heat collecting element vacuum heat-insulating layer is reduced, and inner glass tube passes through the interior gas of vacuum heat-insulating layer to environment release portion heat energy.Thereby limited the temperature difference of inner glass tube and cover glass tube, and the stress that makes inner glass tube and cover glass tube form because of temperature contrast is restricted.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1 is an empty composite construction sketch map that shines protection straight-through type vacuum heat collector tube pipe of variable vacuum.
1. cover glass tubes among the figure; 2. inner glass tube; 3. vacuum heat-insulating layer; 4. sorbing material.
The specific embodiment
Fig. 1 provides an embodiment of the utility model.
Among Fig. 1, embed with one heart with inner glass tube 2 with cover glass tube 1 and to install, and melt envelope in the two-port alignment and form a chuck, the interlayer of said chuck is vacuumized form a vacuum heat-insulating layer 3; Deposit selective absorbing film on the inner glass tube 2; The non-side to light in 140 ± 5 degree angles of circumference zones on inner glass tube 2 connects the activated carbon fiber adsorbing material 4 of 200 ± 10 millimeters of block lengths with the wire circlip low thermal resistance, processes empty a solarization of variable vacuum and protects the straight-through type vacuum heat collecting element.
The operation principle of Fig. 1 embodiment: sunlight passes cover glass tube 1 and on inner glass tube 2 retes, converts heat energy into, and these heat energy pass to the water in the pipe through the tube wall of inner glass tube 2.During normal thermal-arrest, the surface temperature of inner glass tube 2 is no more than 90 ℃, and desorb does not take place sorbing material.During empty the solarization, inner glass tube 2 surface temperatures are very high, and at this moment, sorbing material 4 desorbs are emitted gas and caused the vacuum of vacuum heat-insulating layer 3 to descend.Inner glass tube 2 through the gas in the vacuum heat-insulating layer 3 to environment release portion heat energy.
Claims (2)
1. the empty protection straight-through type vacuum heat collecting element that shines of variable vacuum is processed through melt envelope inner glass tube and cover glass tube at two ends, it is characterized in that connecting a sorbing material, perhaps some sorbing materials at the non-side to light low thermal resistance of said inner glass tube; Said sorbing material is reversible, and promptly when being higher than uniform temperature, said sorbing material generation desorb is also sent gas; When being lower than uniform temperature, absorption takes place and absorbs gas in said sorbing material.
2. the empty protection straight-through type vacuum heat collecting element that shines of variable vacuum according to claim 1; The non-side to light that it is characterized in that on inner glass tube 140 ± 5 degree angles of circumference zones contains the activated carbon fiber adsorbing material of 200 ± 10 millimeters of block lengths that useful wire circlip low thermal resistance connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220229515 CN202630479U (en) | 2012-05-18 | 2012-05-18 | Vacuum degree-variable empty drying protection straight-through vacuum heat collecting element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220229515 CN202630479U (en) | 2012-05-18 | 2012-05-18 | Vacuum degree-variable empty drying protection straight-through vacuum heat collecting element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202630479U true CN202630479U (en) | 2012-12-26 |
Family
ID=47383674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220229515 Expired - Fee Related CN202630479U (en) | 2012-05-18 | 2012-05-18 | Vacuum degree-variable empty drying protection straight-through vacuum heat collecting element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202630479U (en) |
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2012
- 2012-05-18 CN CN 201220229515 patent/CN202630479U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20140518 |