CN200965356Y - Trough-type solar energy vacuum heat collecting tube - Google Patents
Trough-type solar energy vacuum heat collecting tube Download PDFInfo
- Publication number
- CN200965356Y CN200965356Y CNU2006201249578U CN200620124957U CN200965356Y CN 200965356 Y CN200965356 Y CN 200965356Y CN U2006201249578 U CNU2006201249578 U CN U2006201249578U CN 200620124957 U CN200620124957 U CN 200620124957U CN 200965356 Y CN200965356 Y CN 200965356Y
- Authority
- CN
- China
- Prior art keywords
- pipe
- metal tube
- type solar
- glass
- vacuum heat
- 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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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/40—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors
- F24S10/45—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors the enclosure being cylindrical
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
- F24S40/80—Accommodating differential expansion of solar collector elements
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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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Joining Of Glass To Other Materials (AREA)
Abstract
The utility model discloses a groove solar vacuum thermal-collecting tube, comprising a metal pipe with the surface covered with solar absorption coating, a flange disk fixed near two ends of the metal pipe, and a glass pipe sleeved on the outer part of the pipe, wherein two ends of the glass pipe are sealed and connected with the flange disk through an open alloy, and a vacuum layer is arranged between the glass pipe and the metal pipe. The utility model is characterized in that the outer sides of two flanges are connected with two ends of the metal pipe through an expansion joint, and a protective cover covering the expansion joint and the open alloy are fixed at two ends of the metal pipe. The utility model has the advantages that the focused light is prevented from irradiating the seal interface, the heat insulation performance is improved and the temperature demand for the groove solar electric power generation is met, by arranging the protective cover on the seal between the open alloy and the glass, which is improvable in structure, reasonable and simple in design, convenient in industry production of large scale, safe and reliable in performance, low in cost, and easy in popularization.
Description
Technical field
The utility model relates to a kind of vacuum heat collection pipe, and the architecture advances of vacuum heat collection pipe belongs to the solar energy heat collection pipe technical field in the especially a kind of trough type solar power generation system.
Background technology
The typical structure of existing glass-metal straight-through type solar energy vacuum heat collecting tube is: cover solar energy absorbing coating on the metal tube, the metal tube outer casing glass tube vacuumizes between glass tube and metal tube, and both adopt kovar alloy to melt envelope.
Facts have proved that this existing structure heat collector exists a major defect to be: kovar alloy melts the temperature requirement that envelope does not reach trough type solar power generation.
The utility model content
The purpose of this utility model is: the shortcoming at above prior art exists proposes a kind of groove type solar vacuum heat collection pipe that can guarantee to satisfy the trough type solar power generation temperature requirement.
In order to reach above purpose, groove type solar vacuum heat collection pipe of the present utility model comprises that the surface scribbles the metal tube (5) that absorbs sunshine coating (6), near the fixed flange described metal tube two ends, pipe overcoat glaze pipe (3); The two ends of described glass tube (3) are by kovar alloy (2) and ring flange sealing-in, be vacuum layer (4) between described glass tube (3) and metal tube (5), its improvements are: the described two flanges outside is connected with metal tube (5) two ends by expansion joint (1), the fixing protective cover (8) that hides expansion joint (1) and kovar alloy (2) in described metal tube (5) two ends.
The utility model has the advantages that: because the envelope of melting between kovar alloy and the glass adds protective cover, therefore can prevent that the focused ray direct irradiation from melting the sealing-in mouth, thereby improve heat resistance, satisfy the temperature requirement of trough type solar power generation.This architecture advances simplicity of design, reasonable is convenient to large-scale industrial production, performance safety, reliable, and cost is low, easily promotes.
Description of drawings
Fig. 1 is the utility model groove type solar vacuum heat collection pipe structural representation.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
Embodiment
The groove type solar vacuum heat collection pipe of present embodiment as shown in Figure 1.Wherein, the surface scribbles near fixed flange metal tube 5 two ends that absorb sunshine coating 6, pipe overcoat glaze pipe 3, the two ends of glass tube 3 are by kovar alloy 2 and ring flange sealing-in, form vacuum layer 4 between glass tube 3 and the metal tube 5, place getter in the pipe, with reach and holding tube in 10
-2Pa vacuum, the two flanges outside is connected with metal tube 5 two ends by expansion joint 1, the swell increment of back glass tube is less than metal tube thereby compensation heats up.For bonding strength and the rigidity that improves metal tube and glass tube, be fixed with the ring-type hold-down support 7 of support glass pipe on the metal tube 5, this bearing plays a supportive role between metal tube 5 and glass tube 3.The fixing protective cover 8 that hides expansion joint 1 and kovar alloy 2 in metal tube 5 two ends, the longitudinal section of protective cover 8 is c-shaped, can effectively cover expansion joint 1 and kovar alloy 2.The focused ray direct irradiation that can prevent the trough type solar power generation system is like this melting on the sealing-in mouth, thereby improves heat resistance, makes it satisfy the temperature requirement of trough type solar power generation.
During work, sunshine sees through the vacuum layer between glass tube and metal tube, is radiated to be coated with on the metal tube that absorbs the sunshine coating, after coated surface absorbs, and the working medium in the heating metal pipe.Experiment shows that the present embodiment minor structure is simple, reasonable, is convenient to suitability for industrialized production, serviceability safety, reliable, and cost economy is convenient to promote.
In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (4)
1, a kind of groove type solar vacuum heat collection pipe comprises that the surface scribbles the metal tube (5) that absorbs sunshine coating (6), the two ends fixed flange of metal tube (5), pipe overcoat glaze pipe (3); The two ends of glass tube (3) are by kovar alloy (2) and ring flange sealing-in, be vacuum layer (4) between glass tube (3) and metal tube (5), it is characterized in that: the described two flanges outside is connected with metal tube (5) two ends by expansion joint (1), the fixing protective cover (8) that hides expansion joint (1) and kovar alloy (2) in described metal tube (5) two ends.
2, according to the described groove type solar vacuum heat collection pipe of claim 1, it is characterized in that: place getter in the vacuum layer (4) between described glass tube (3) and the metal tube (5).
3, according to claim 1 or 2 described groove type solar vacuum heat collection pipes, it is characterized in that: the ring-type hold-down support (7) that is fixed with the support glass pipe on the described metal tube (5).
4, according to the described groove type solar vacuum heat collection pipe of claim 3, it is characterized in that: the longitudinal section of described protective cover (8) is c-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201249578U CN200965356Y (en) | 2006-11-07 | 2006-11-07 | Trough-type solar energy vacuum heat collecting tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201249578U CN200965356Y (en) | 2006-11-07 | 2006-11-07 | Trough-type solar energy vacuum heat collecting tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200965356Y true CN200965356Y (en) | 2007-10-24 |
Family
ID=38869371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201249578U Expired - Fee Related CN200965356Y (en) | 2006-11-07 | 2006-11-07 | Trough-type solar energy vacuum heat collecting tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200965356Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466349A (en) * | 2010-11-09 | 2012-05-23 | 杨志勇 | Spoke type solar vacuum metal heat collection tube |
| CN104976791A (en) * | 2015-07-20 | 2015-10-14 | 无锡环特太阳能科技有限公司 | Pressure-bearing stagnation type vacuum tube water heater |
| CN107192144A (en) * | 2016-03-14 | 2017-09-22 | 南京桑立瑞新能源科技有限公司 | A kind of groove type solar receiver with secondary condensation |
-
2006
- 2006-11-07 CN CNU2006201249578U patent/CN200965356Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466349A (en) * | 2010-11-09 | 2012-05-23 | 杨志勇 | Spoke type solar vacuum metal heat collection tube |
| CN102466349B (en) * | 2010-11-09 | 2015-02-25 | 杨志勇 | Spoke type solar vacuum metal heat collection tube |
| CN104976791A (en) * | 2015-07-20 | 2015-10-14 | 无锡环特太阳能科技有限公司 | Pressure-bearing stagnation type vacuum tube water heater |
| CN107192144A (en) * | 2016-03-14 | 2017-09-22 | 南京桑立瑞新能源科技有限公司 | A kind of groove type solar receiver with secondary condensation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |