CN2929574Y - External expansion groove type solar energy vacuum heat collector - Google Patents
External expansion groove type solar energy vacuum heat collector Download PDFInfo
- Publication number
- CN2929574Y CN2929574Y CNU2006200753473U CN200620075347U CN2929574Y CN 2929574 Y CN2929574 Y CN 2929574Y CN U2006200753473 U CNU2006200753473 U CN U2006200753473U CN 200620075347 U CN200620075347 U CN 200620075347U CN 2929574 Y CN2929574 Y CN 2929574Y
- Authority
- CN
- China
- Prior art keywords
- pipe
- metal tube
- fusing
- glass
- sealing
- 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 relates to an external expansion groove typed solar vacuum collector which belongs to the solar collector technological field. The heat collector comprises a metal pipe coated with solar absorption layer on the surface, wherein a glass pipe is coated outside the metal pipe, a vacuum layer is formed between the glass pipe and the metal pipe, the improved point is that ends of the glass pipe and one end of an accordion pipe which is also coated outside the metal pipe are fused and sealed open alloys, the other end of the accordion pipe is connected with the metal pipe, and a protecting cover is added outside the fusing and sealing connecter. The fusing and sealing between the glass pipe and the open alloys makes the connecter is heat resistant, the adoption of fusing and sealing between the accordion pipe equipped outside and the glass can resist the temperature of the connecter, and the adding of the protecting cover outside further prevents focused lights from radiating on the fusing and sealing connecter, thereby the adoption of the utility model structure can make the vacuum collector with a fine heat resistant and meet the temperature requirements of heat generating. And the structure of the utility model is simple and reasonable which is convenient for a large scale industrial production with a safe and reliable feature, low cost and easy to be spread.
Description
Technical field
The utility model relates to a kind of vacuum heat collection pipe that is used in the trough type solar power generation system, and especially a kind of architecture advances of groove type solar vacuum heat collection pipe belongs to the solar energy heat collection pipe technical field.
Background technology
Understand according to the applicant, the conventional structure of present domestic glass-metal straight-through type solar energy vacuum heat collecting tube is to cover solar energy absorbing coating on the metal tube, and the metal tube outer casing glass tube vacuumizes between glass tube and metal tube, adopts kovar alloy to melt envelope between the two.In order to compensate the swell increment of intensification back glass tube, be everlasting and between metal tube and the glass tube bellows be installed less than metal tube.A major defect of this structure is: the hear resistance that kovar alloy melts envelope does not reach the temperature requirement of trough type solar power generation.
The utility model content
The technical problem that will solve of the present utility model is: the shortcoming at above prior art exists proposes a kind of outer expanded-type solar vacuum heat-collecting pipe that can satisfy the trough type solar power generation temperature requirement.
In order to solve above technical problem, outer expanded-type solar vacuum heat-collecting pipe of the present utility model comprises the metal tube of surface coverage solar energy absorbing coating, described metal tube is with glass tube outward, form vacuum layer between described glass tube and the metal tube, its improvements are, one end of the bellows that described glass pipe end is outer with being enclosed within metal tube equally is by the kovar alloy sealing by fusing, and the other end of described bellows is connected with metal tube by flange.
Like this, sealing by fusing makes the interface energy high temperature resistant between glass tube and the kovar alloy.Kovar alloy sealing by fusing place directly is not connected with the metal tube that produces high temperature between external bellows and glass tube, therefore can avoid the sealing by fusing place to produce high temperature to a certain extent.For more effective inhibition high temperature, the sealing by fusing interface adds protective cover, to prevent that the focused ray direct irradiation is at the sealing by fusing interface.
The utility model has the advantages that: it is high temperature resistant that sealing by fusing makes the interface energy between glass tube and the kovar alloy.Adopt the kovar alloy sealing by fusing can suppress the temperature of interface between external bellows and the glass.Prevented that further the focused ray direct irradiation is at the sealing by fusing interface and add protective cover.Therefore, adopt structure of the present utility model can make vacuum heat collection pipe have good hear resistance, satisfy the temperature requirement of heat generating.And, of the present utility model simple and reasonable for structure, be convenient to large-scale industrial production, performance safety, reliable, cost is low, easily promotes.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the structural representation of an embodiment of the utility model.Among the figure 1 is flange, the 2nd, bellows, the 3rd, and kovar alloy, the 4th, glass tube, the 5th, vacuum layer, the 6th, metal tube, the 7th absorbs sunshine coating, the 8th, hold-down support, the 9th, protective cover.
The specific embodiment
Embodiment one
The outer expanded-type solar vacuum heat-collecting pipe of present embodiment as shown in Figure 1, wherein glass tube 4 is enclosed within outside the metal tube 6, places getter between the two, with reach and holding tube in 10
-2Pa vacuum forms vacuum layer 5.The surface of metal tube scribbles and absorbs sunshine coating 7.The two ends of metal tube 6 are connected by the flange 1 bellows 2 outer end seal weldings outer with being enclosed within metal tube respectively, and the inner of bellows 2 and glass tube 4 adopt kovar alloy 3 sealing-ins, form the sealing structure of flange 1+ bellows 2+ kovar alloy 3+ glass tube 4.In addition, outside metal tube 6, install the hold-down support 8 that is supported between metal tube 6 and the glass tube 4 additional, make metal tube 6 and glass tube 4 more reliable location.Protective cover 9 covers are contained in the sealing by fusing interface and locate outward, can prevent that the focused ray direct irradiation is at the sealing by fusing interface.
During work, parabolic reflector in the trough type solar power generation system reflects sunshine, makes light see through vacuum 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, the working medium in the heating metal pipe.
Facts have proved, sealing by fusing makes the interface energy high temperature resistant to the outer expanded-type solar vacuum heat-collecting pipe of present embodiment between glass tube and the kovar alloy owing to adopting, and add protective cover, the temperature that therefore can effectively suppress the sealing by fusing interface, make vacuum heat collection pipe have good hear resistance, satisfy the temperature requirement of heat generating.
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. outer expanded-type solar vacuum heat-collecting pipe, the metal tube that comprises the surface coverage solar energy absorbing coating, described metal tube is with glass tube outward, form vacuum layer between described glass tube and the metal tube, it is characterized in that: an end of the bellows that described glass pipe end is outer with being enclosed within metal tube equally is by the kovar alloy sealing by fusing, and the other end of described bellows is connected with metal tube by flange.
2. according to the described outer expanded-type solar vacuum heat-collecting pipe of claim 1, it is characterized in that: the interface of described kovar alloy sealing by fusing adds protective cover.
3. according to the described outer expanded-type solar vacuum heat-collecting pipe of claim 2, it is characterized in that: described metal tube installs the hold-down support that is supported between metal tube and the glass tube outward additional.
4. according to the described outer expanded-type solar vacuum heat-collecting pipe of claim 3, it is characterized in that: the two ends of described metal tube are connected by the flange bellows outer end seal welding outer with being enclosed within metal tube respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200753473U CN2929574Y (en) | 2006-07-25 | 2006-07-25 | External expansion groove type solar energy vacuum heat collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200753473U CN2929574Y (en) | 2006-07-25 | 2006-07-25 | External expansion groove type solar energy vacuum heat collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2929574Y true CN2929574Y (en) | 2007-08-01 |
Family
ID=38307956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200753473U Expired - Fee Related CN2929574Y (en) | 2006-07-25 | 2006-07-25 | External expansion groove type solar energy vacuum heat collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2929574Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855312A (en) * | 2019-01-17 | 2019-06-07 | 河北道荣新能源科技有限公司 | Film photovoltaic power generation coupling selectivity absorber coatings solar energy heat collection pipe |
-
2006
- 2006-07-25 CN CNU2006200753473U patent/CN2929574Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855312A (en) * | 2019-01-17 | 2019-06-07 | 河北道荣新能源科技有限公司 | Film photovoltaic power generation coupling selectivity absorber coatings solar energy heat collection pipe |
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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: 20070801 Termination date: 20120725 |