CN201203279Y - High temperature vacuum thermal-collecting tube - Google Patents
High temperature vacuum thermal-collecting tube Download PDFInfo
- Publication number
- CN201203279Y CN201203279Y CNU2008200328694U CN200820032869U CN201203279Y CN 201203279 Y CN201203279 Y CN 201203279Y CN U2008200328694 U CNU2008200328694 U CN U2008200328694U CN 200820032869 U CN200820032869 U CN 200820032869U CN 201203279 Y CN201203279 Y CN 201203279Y
- Authority
- CN
- China
- Prior art keywords
- pipe
- tube
- inner metal
- vacuum
- metal tube
- 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
- F24S40/40—Preventing corrosion; Protecting against dirt or contamination
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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
- F24S40/40—Preventing corrosion; Protecting against dirt or contamination
- F24S40/46—Maintaining vacuum, e.g. by using getters
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S25/00—Arrangement of stationary mountings or supports for solar heat collector modules
- F24S25/60—Fixation means, e.g. fasteners, specially adapted for supporting solar heat collector modules
- F24S2025/6012—Joining different materials
- F24S2025/6013—Joining glass with non-glass 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)
- Thermal Insulation (AREA)
Abstract
The utility model relates to a field of solar heat collection pipe, disclosing a high temperature vacuum heat collection pipe, which comprises an outer glass pipe and an inner metal pipe, the outer glass pipe is sleeved on the inner metal pipe, the inner metal pipe is externally provided with a solar heat absorption layer, a corrugated pie is respectively arranged at both ends of the inner metal pipe, one end of the corrugated pipe is connected hermetically with the inner metal pipe, the other end of the corrugated pipe is connected hermetically with the outer glass pipe, protective cover is respectively arranged at the interface between the corrugated pipe and the inner metal and at the interface between the corrugated pipe and the outer glass pipe, so that the interfaces can be protected properly, thereby prolonging service life of vacuum pipe. A vacuum layer is between the inner metal pipe and the corrugated pipe and between the inner metal pipe and the outer glass pipe, a getter can be placed in the vacuum layer to keep vacuum degree, a self-centering support is arranged between the middle part of the metal pipe and the glass pipe, a fin is also arranged on the metal pipe, the fin is provided with a solar heat absorption layer, so as to increase available area of the solar energy absorption in no need of adding pipe diameter of the heat collection pipe, reduce the weight of the vacuum pipe, save the material and be easy for installation.
Description
Technical field
The utility model relates to the Application of Solar Energy field, relates in particular to a kind of structure that is applied in the vacuum heat collection pipe in the Solar Energy Heat Utilization System.
Background technology
Present domestic glass-metal straight-through type solar energy vacuum heat collecting tube generally adopts and covers solar energy absorbing coating on the metal tube, and the metal tube outer casing glass tube vacuumizes between glass tube and metal tube.In order to compensate the back glass tube that heats up less than the swell increment of metal tube, bellows commonly used comes the compensate for dilatation amount poor, adopts the kovar alloy transition to connect between bellows and the glass.
The patent No. that application on July 25th, 2006 is delivered in retrieval is ZL 200620075347.3, the patent of outer expanded-type solar vacuum heat-collecting pipe by name, thermal-collecting tube 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, 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, the other end of described bellows is connected with metal tube, and the sealing by fusing interface adds protective cover.This thermal-collecting tube has two major defects: the one, and the glass tube bellows outer with being enclosed within metal tube equally passes through the kovar alloy sealing by fusing, increased operation easier; The 2nd, requirement concentrator optically focused hot spot is narrow, and it is big that the endothermic tube caliber in the thermal-collecting tube is wanted, otherwise energy has part to overflow the endothermic tube absorption region behind the optically focused.
Summary of the invention
The purpose of this utility model is: at the kovar alloy sealing by fusing operating difficulties of prior art existence, to the demanding shortcoming of concentrator, a kind of high-temperature vacuum heat-collecting tube has been proposed, this thermal-collecting tube has sufficient intensity and rigidity, connect reliably, it is bigger to absorb the solar energy effective area.
The technical solution of the utility model is that a kind of high-temperature vacuum heat-collecting tube comprises outer layer glass tube and inner layer metal pipe, this outer layer glass tube is sleeved on the inner layer metal pipe, metal tube is provided with the solar energy heat absorbing layer outward, the two ends of metal tube are respectively equipped with bellows, one end and the metal tube of this bellows are tightly connected, the other end can be tightly connected by kovar alloy and glass tube, is provided with protective cover at the interface of described bellows and metal tube and glass tube.Like this can the better protection interface, prolong the service life of vacuum tube.It between metal tube and bellows and the glass tube vacuum layer, can place getter in the described vacuum layer to keep vacuum, self-centering is housed between the middle part of metal tube and the glass tube to be supported, also be provided with fin on this metal tube, this fin is provided with the solar energy heat absorbing layer, has increased the effective area of solar absorbing layer greatly, do not need to increase the caliber of thermal-collecting tube, lowered the weight of vacuum tube, saved material, be easier to install.
The wherein said fin of above-mentioned high-temperature vacuum heat-collecting tube can be yi word pattern, cross or screw type.In the utility model, bellows can be directly to be connected with metal tube, also can be to be connected with metal tube by flange.
The beneficial effects of the utility model are: 1. be easy to install, increase the effective absorbing area of solar energy.Owing to also have fin on this metal tube, this fin is provided with the solar energy heat absorbing layer, during work, sunshine sees through glass tube and passes vacuum layer, shines on the metal absorption tube and fin that is coated with heat absorbing coating, thereby export after the working medium in the heating metal pipe, increase the effective area of solar absorbing layer greatly, do not needed to increase the caliber of thermal-collecting tube, lowered the weight of vacuum tube, saved material, be easier to install.
2. properly settled glass and thermal expansion metal difference of coefficients problem, and intensity height, good rigidly, connection are reliable, can keep long term seal, thereby satisfy the needs of high-power applications occasion.Owing to external bellows is housed on the metal tube, therefore can digest the swell increment of metal tube, and bellows and glass tube be tightly connected by kovar alloy directly greater than glass tube, reduced the weld seam number, improved sealing; Because interior pipe based on metal tube, under the cooperation that self-centering is supported, even length is long again, also can have enough intensity and rigidity, the system of being convenient to installs integrated simultaneously, thereby can satisfy the needs of high-power thermal-arrest.
3. not fragile, add protective cover after, can prevent that the focused ray direct irradiation from interface, guaranteeing its heat resistance, be particularly suitable for solar energy thermal-power-generating and other medium and high temperature Application of Solar Energy occasion.
Description of drawings
Fig. 1 is the structural representation of the pipe of yi word pattern fin of the present utility model,
Among the figure 1 is flange, the 2nd, bellows, the 3rd, glass tube, the 4th, vacuum layer, the 5th, metal absorption tube, the 6th, fin, the 7th, solar energy heat absorbing layer, the 8th, hold-down support, the 9th, protective cover, the 10th, getter.
Fig. 2 is the structural representation of the pipe of spiral fins of the present utility model.
Fig. 3 be Fig. 2 pipe C-C to sectional view.
Fig. 4 be Fig. 1 pipe C-C to sectional view.
Fig. 5 is another kind of distortion of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described.
The outer expanded-type solar vacuum heat-collecting pipe of present embodiment as shown in Figure 1, wherein glass tube 3 is enclosed within outside the metal tube 5, forms vacuum layer 4 between the two, can place getter 10 in the vacuum layer, with reach and holding tube in vacuum.Metal tube 5 and fin 6 can adopt yi word pattern, cross, screw type as shown in Figures 2 and 3, and metal tube 5 and fin 6 surfaces scribble the solar energy heat absorbing layer 7 that absorbs sunshine.The two ends of metal tube 5 can be connected by the flange 1 bellows 2 outer end seal weldings outer with being enclosed within metal tube respectively, the inner of bellows 2 and glass tube 3 direct sealing-ins, the sealing structure of formation flange 1+ bellows 2+ glass tube 3.In addition, outside metal tube 5, can install the self-centering that is supported between metal tube 5 and the glass tube 3 additional and support 8, make metal tube 5 and glass tube 3 more reliable location.As shown in Figure 4, wherein self-centering support 8 can be to be made of circular arc supporting seat, elasticity support sheet, the head of conflicting, the arc radius of circular arc supporting seat and metal tube 5 external diameters match, be fixed on outside the metal tube 5, elasticity support sheet is by stretching to both sides on the circular arc supporting seat, and the conflict head by the end is resisted against in the glass outer tube locatees.During assembling, two one group of support member is separately fixed at glass tube bilateral symmetry place.Protective cover 9 covers are contained in interface and locate outward, can prevent that the focused ray direct irradiation from interface, can prolong the service life of pipe.
The distortion of the another kind of present embodiment can be as shown in Figure 5, described bellows is connected with metal tube directly all the other are constant.
Here description of the present utility model and application are illustrative, are not to want with scope restriction of the present utility model in the above-described embodiments.Here the distortion of disclosed embodiment and change are possible, and the various parts of the actual replacement of embodiment and equivalence are known for those those of ordinary skill in the art.Those skilled in the art are noted that under the situation that does not break away from spirit of the present utility model or substantive characteristics, and the utility model can be with other forms, structure, layout, ratio, and realize with other elements, material and parts.Under the situation that does not break away from the scope of the invention and spirit, can carry out other distortion and change here to disclosed embodiment.
Claims (6)
1. a high-temperature vacuum heat-collecting tube comprises outer layer glass tube and inner layer metal pipe, this outer layer glass tube is sleeved on the inner layer metal pipe, metal tube is provided with the solar energy heat absorbing layer outward, the two ends of metal tube are respectively equipped with bellows, one end and the metal tube of this bellows are tightly connected, the other end and glass tube are tightly connected, interface at described bellows and metal tube and glass tube is respectively equipped with protective cover, it between metal tube and bellows and the glass tube vacuum layer, self-centering is housed between the middle part of metal tube and the glass tube to be supported, it is characterized in that also be provided with fin on the metal tube, this fin is provided with the solar energy heat absorbing layer.
2. high-temperature vacuum heat-collecting tube as claimed in claim 1 is characterized in that described fin is a yi word pattern.
3. high-temperature vacuum heat-collecting tube as claimed in claim 1 is characterized in that described fin is cross.
4. high-temperature vacuum heat-collecting tube as claimed in claim 1 is characterized in that described fin is a screw type.
5. high-temperature vacuum heat-collecting tube as claimed in claim 1 is characterized in that described bellows directly is connected with metal tube.
6. high-temperature vacuum heat-collecting tube as claimed in claim 1 is characterized in that described bellows is connected with metal tube by flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200328694U CN201203279Y (en) | 2008-03-11 | 2008-03-11 | High temperature vacuum thermal-collecting tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200328694U CN201203279Y (en) | 2008-03-11 | 2008-03-11 | High temperature vacuum thermal-collecting tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201203279Y true CN201203279Y (en) | 2009-03-04 |
Family
ID=40425592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200328694U Expired - Fee Related CN201203279Y (en) | 2008-03-11 | 2008-03-11 | High temperature vacuum thermal-collecting tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201203279Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011042578A1 (en) * | 2009-10-05 | 2011-04-14 | Abengoa Solar New Technologies, S.A. | Vacuum-enhancing system, or non-evaporable getter |
| WO2011039281A3 (en) * | 2009-09-29 | 2012-04-12 | Schott Solar Ag | Absorber pipe |
| CN102721215A (en) * | 2012-07-10 | 2012-10-10 | 朱雷 | Metal vacuum high-temperature heat collection pipe |
| ES2598602A1 (en) * | 2016-04-14 | 2017-01-27 | Jorge CIVANTOS CAPELLA | Smart linear thermal solar captator with low environmental impact (Machine-translation by Google Translate, not legally binding) |
-
2008
- 2008-03-11 CN CNU2008200328694U patent/CN201203279Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011039281A3 (en) * | 2009-09-29 | 2012-04-12 | Schott Solar Ag | Absorber pipe |
| CN103471267A (en) * | 2009-09-29 | 2013-12-25 | 肖特太阳能控股公司 | Absorber pipe |
| EP2581684A3 (en) * | 2009-09-29 | 2014-02-26 | SCHOTT Solar AG | Absorber pipe |
| CN103471267B (en) * | 2009-09-29 | 2015-09-30 | 肖特太阳能控股公司 | absorption tube |
| US9939176B2 (en) | 2009-09-29 | 2018-04-10 | Rioglass Solar Holding, S.A. | Absorber pipe |
| WO2011042578A1 (en) * | 2009-10-05 | 2011-04-14 | Abengoa Solar New Technologies, S.A. | Vacuum-enhancing system, or non-evaporable getter |
| ES2360326A1 (en) * | 2009-10-05 | 2011-06-03 | Abengoa Solar New Technologies, S.A. | Vacuum-enhancing system, or non-evaporable getter |
| CN102721215A (en) * | 2012-07-10 | 2012-10-10 | 朱雷 | Metal vacuum high-temperature heat collection pipe |
| ES2598602A1 (en) * | 2016-04-14 | 2017-01-27 | Jorge CIVANTOS CAPELLA | Smart linear thermal solar captator with low environmental impact (Machine-translation by Google Translate, not legally binding) |
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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: 20090304 Termination date: 20130311 |