CN201666682U - Medium- and high-temperature solar vacuum heat collecting tube - Google Patents
Medium- and high-temperature solar vacuum heat collecting tube Download PDFInfo
- Publication number
- CN201666682U CN201666682U CN201020167039XU CN201020167039U CN201666682U CN 201666682 U CN201666682 U CN 201666682U CN 201020167039X U CN201020167039X U CN 201020167039XU CN 201020167039 U CN201020167039 U CN 201020167039U CN 201666682 U CN201666682 U CN 201666682U
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- tube
- metal inner
- pipe
- vacuum heat
- metal
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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 medium- and high-temperature solar vacuum heat collecting tube which comprises a metal inner tube and a glass cover tube; the metal inner tube is sleeved in the glass cover tube; the end of the glass cover tube is sealed and connected with the metal inner tube; and a closed cavity is formed between the metal inner tube and the glass cover tube. The sealing and connecting part of the glass cover tube and the metal inner tube is provided with a metal bellow and a Kovar alloy tube; and the Kovar alloy tube can connect the glass cover tube and the metal inner tube and forms a closed vacuum space. A high temperature resistant absorbing coating is plated on the metal inner tube, and both ends thereof are provided with connecting flanges. The medium- and high-temperature solar vacuum heat collecting tube combines the advantages of a glass tube and a metal tube, resists high temperature and high pressure, has the highest use temperature up to 600 to 800 DEG C, can bear 0.1 to 2MPa working pressure in tubes, has wide scope of application and can be conveniently connected with other equipment or pipelines.
Description
Technical field
The utility model relates to a kind of device that utilizes solar energy heating, relates in particular to a kind of middle high temperature solar vacuum heat collection pipe.
Background technology
Along with the raising of development of science and technology and people's environmental consciousness, people are more and more general to the utilization of solar energy.At present, Chang Yong solar energy heat collector is mainly by solar energy heat collection pipe.The solar energy heat collection pipe that occurs on the market mainly contains all-glass vacuum thermal-collecting tube, the heat pipe-two kinds of forms of glass combined type thermal-collecting tube that uses under the normal temperature.For all-glass vacuum thermal-collecting tube and heat pipe-glass combined type thermal-collecting tube, because the restriction and the coating technology of glass material itself can't be operated under the state of high temperature, high pressure, the maximum operation (service) temperature of heat sink is 400 ℃～450 ℃.Generally all use in hot-water heating system, the output medium temperature is low, thereby has greatly limited the range of application of solar energy.
Summary of the invention
The purpose of this utility model provides a kind of high temperature resistant, high pressure, and the middle high temperature solar vacuum heat collection pipe of applied range.
A kind of middle high temperature solar vacuum heat collection pipe of the present utility model, comprise metal inner pipe, glass enclosure tube, described metal inner pipe is inserted among the glass enclosure tube, the end of glass enclosure tube is connected by metal bellows with metal inner pipe, form closed cavity between metal inner pipe and the glass enclosure tube, be provided with the kovar alloy pipe between metal bellows and the glass enclosure tube, the part of metal bellows is positioned among the sealed cavity.
Advantage of the present utility model is, high temperature solar vacuum heat collection pipe in described, metal inner pipe is inserted among the glass enclosure tube, the end and the metal inner pipe of glass enclosure tube are tightly connected, form closed cavity between metal inner pipe and the glass enclosure tube, the utility model integrates the advantage of glass tube and metal tube, high temperature resistant, high pressure, maximum operation (service) temperature can reach 600～800 ℃, and the interior operating pressure of the pipe that can bear 0.1～2MPa, applied range also can make things convenient for and being connected of other equipment or pipeline.
Description of drawings
Fig. 1 is the structural representation of high temperature solar vacuum heat collection pipe in the utility model.
Among the figure:
1-metal inner pipe 2-metal bellows 3-kovar alloy pipe 4-metal sleeve
The long-acting getter 8-of 5-glass enclosure tube 6-bleeding point 7-closed cavity
9-is high temperature resistant absorber coatings 10-adpting flange
The specific embodiment
The preferable specific embodiment of solar vacuum heat-collecting pipe of the present utility model as shown in Figure 1, comprise metal inner pipe 1, glass enclosure tube 5, described metal inner pipe 1 is inserted among the glass enclosure tube 5, the end of glass enclosure tube 5 and metal inner pipe 1 are tightly connected, form closed cavity 8 between metal inner pipe 1 and the glass enclosure tube 5, the two ends of metal inner pipe 1 are provided with adpting flange 10, are used for being connected with other equipment or pipeline.
When middle high temperature solar vacuum heat collection pipe is worked, the thermal-arrest medium flows in metal inner pipe 1, sunshine sees through glass enclosure tube 5 and shines on the metal inner pipe 1, metal inner pipe 1 absorbs solar energy and is converted into heat energy, pass to the thermal-arrest medium, glass enclosure tube 5 plays insulation effect with closed cavity 7, in order to make closed cavity 8 play effective insulation effect, be preferably vacuum in the closed cavity 8, so on glass enclosure tube 5, be provided with bleeding point 6, be used to take away closed cavity 8 gas inside, make closed cavity 8 be vacuum, bleed after the end, bleeding point 6 is sealed.
To keep higher vacuum in the closed cavity 8 in order making, to reduce the atmospheric density in the closed cavity 8, reduce the convection current heat waste, be provided with long-acting getter 7 in the closed cavity 8, long-acting getter 7 is fixed on the metal inner pipe 1, is mainly used to absorb the thermal-collecting tube gas inside.
Described metal inner pipe 1 is provided with metal bellows 2 with the junction of glass enclosure tube 5, metal bellows 2 is welded on the metal inner pipe 1, metal bellows 2 is connected with kovar alloy pipe 3 by metal sleeve 4, the other end of kovar alloy pipe 3 and glass enclosure tube 5 sealing-ins, the part of metal bellows 2 is in closed cavity 4 inside, utilize the seal and the scalability of metal bellows 2, keep the vacuum in the closed cavity 8 and offset part because the stress that expands with heat and contract with cold and produce.The main effect of kovar alloy pipe 3 is the coupling welding transition that realize glass and metal, and guarantees the seal of thermal-collecting tube, and this kind transient mode can strengthen the bond strength of metal-glass, improves the service life and the security of this thermal-collecting tube greatly.Glass enclosure tube 5 used materials described in the utility model are the medicinal Pyrex of a kind of neutrality, because the thermal coefficient of expansion of its thermal coefficient of expansion and kovar alloy pipe 3 is close, so directly sealing-in has not needed middle transition glass.
Preferably scribble high temperature resistant absorber coatings 9 on the metal inner pipe 1, high-temperature-resistant selective absorber coatings 9 is coated with and is plated on the metal inner pipe 1, the maximum operating temperature of high temperature resistant absorber coatings 9 far above existing coating serviceability temperature, can make the thermal-arrest medium produce higher temperature at 600 ℃～800 ℃.
Metal inner pipe 1 adopts corrosion-resistant, high thermal conductance and the metal material manufacturing of high life, can bear 600 ℃～800 ℃ high temperature, and can bear the thermal-arrest medium of the pressure of 0.1～2MPa, applied range.
The utility model is a kind of solar vacuum heat-collecting pipe of metal-glass composite construction, the advantage that integrates glass tube and metal tube, maximum operation (service) temperature can reach 600～800 ℃, and the interior operating pressure of the pipe that can bear 0.1～2MPa, applied range, also can make things convenient for and being connected of other equipment or pipeline, the characteristics that the utility model is different from general thermal-collecting tube are, the sealing-in of metal and glass is matched seal, glass belong to a kind of special material can with the direct sealing-in of kovar alloy, do not needed transitional glass, the part of metal bellows 2 is positioned at closed cavity 8 in the utility model, has improved the utilization rate of thermal-collecting tube homogeneous tube to a certain extent.
Claims (8)
1. high temperature solar vacuum heat collection pipe in a kind, it is characterized in that, comprise metal inner pipe, glass enclosure tube, described metal inner pipe is inserted among the glass enclosure tube, the end of glass enclosure tube is connected by metal bellows with metal inner pipe, form closed cavity between metal inner pipe and the glass enclosure tube, be provided with the kovar alloy pipe between metal bellows and the glass enclosure tube, the part of metal bellows is positioned among the sealed cavity.
2. high temperature solar vacuum heat collection pipe in according to claim 1 is characterized in that metal bellows is welded on the metal inner pipe.
3. high temperature solar vacuum heat collection pipe in according to claim 1 is characterized in that described metal bellows is connected with the kovar alloy pipe by metal sleeve, the other end of kovar alloy pipe and glass enclosure tube sealing-in.
4. high temperature solar vacuum heat collection pipe in according to claim 3 is characterized in that described kovar alloy pipe and the direct sealing-in of glass enclosure tube, no middle transition glass.
5. high temperature solar vacuum heat collection pipe in according to claim 1 is characterized in that described glass enclosure tube is provided with bleeding point, is vacuum in the described closed cavity.
6. high temperature solar vacuum heat collection pipe in according to claim 1 is characterized in that, is provided with long-acting getter in the described closed cavity.
7. high temperature solar vacuum heat collection pipe in according to claim 1 is characterized in that described metal inner pipe two ends are respectively equipped with adpting flange.
8. according to each described middle high temperature solar vacuum heat collection pipe of claim 1 to 7, it is characterized in that, scribble high temperature resistant absorber coatings on the described metal inner pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020167039XU CN201666682U (en) | 2010-04-19 | 2010-04-19 | Medium- and high-temperature solar vacuum heat collecting tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020167039XU CN201666682U (en) | 2010-04-19 | 2010-04-19 | Medium- and high-temperature solar vacuum heat collecting tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201666682U true CN201666682U (en) | 2010-12-08 |
Family
ID=43267641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020167039XU Expired - Lifetime CN201666682U (en) | 2010-04-19 | 2010-04-19 | Medium- and high-temperature solar vacuum heat collecting tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201666682U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022848A (en) * | 2010-12-23 | 2011-04-20 | 顺德中山大学太阳能研究院 | Medium and high temperature solar evacuator collector tube |
| CN102305484A (en) * | 2011-10-11 | 2012-01-04 | 李德杰 | Solar collector tube with light trapping structure |
| CN102878714A (en) * | 2011-07-12 | 2013-01-16 | 杨志勇 | Turnup inverse sealing type glass metal vacuum heat collecting pipe |
-
2010
- 2010-04-19 CN CN201020167039XU patent/CN201666682U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022848A (en) * | 2010-12-23 | 2011-04-20 | 顺德中山大学太阳能研究院 | Medium and high temperature solar evacuator collector tube |
| CN102022848B (en) * | 2010-12-23 | 2013-04-10 | 顺德中山大学太阳能研究院 | Medium and high temperature solar evacuator collector tube |
| CN102878714A (en) * | 2011-07-12 | 2013-01-16 | 杨志勇 | Turnup inverse sealing type glass metal vacuum heat collecting pipe |
| CN102305484A (en) * | 2011-10-11 | 2012-01-04 | 李德杰 | Solar collector tube with light trapping structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING TIANRUIXING VACUUM TECHNOLOGY DEVELOPMENT Free format text: FORMER OWNER: BEIJING KANGTUO SCIENCE +. TECHNOLOGY DEVELOPMENT CORP. Effective date: 20110210 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100190 NO.61, ZHICHUN ROAD, HAIDIAN DISTRICT, BEIJING TO: 100080 NO.16, SOUTH STREET 3, ZHONGGUANCUN, HAIDIAN DISTRICT, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110210 Address after: 100080 No. 16, South Third Street, Haidian District, Beijing, Zhongguancun Patentee after: Beijing Tianruxing Vacuum Technology Development Co., Ltd. Address before: 100190 No. 61, Haidian District, Beijing, Zhichun Road Patentee before: Beijing Kangtuo Science &. Technology Development Corp. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20101208 |
|
| CX01 | Expiry of patent term |