CN201251301Y - Straight way type vacuum solar energy thermal-collecting tube - Google Patents
Straight way type vacuum solar energy thermal-collecting tube Download PDFInfo
- Publication number
- CN201251301Y CN201251301Y CNU2008201090255U CN200820109025U CN201251301Y CN 201251301 Y CN201251301 Y CN 201251301Y CN U2008201090255 U CNU2008201090255 U CN U2008201090255U CN 200820109025 U CN200820109025 U CN 200820109025U CN 201251301 Y CN201251301 Y CN 201251301Y
- Authority
- CN
- China
- Prior art keywords
- tube
- thermal
- metal
- heat absorption
- glass 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 - Lifetime
Links
- 239000002184 metal Substances 0.000 claims abstract description 54
- 239000011521 glass Substances 0.000 claims abstract description 30
- 230000007704 transition Effects 0.000 claims abstract description 12
- 239000011248 coating agent Substances 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims abstract description 4
- 238000010521 absorption reaction Methods 0.000 claims description 31
- 238000007731 hot pressing Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000005057 refrigeration Methods 0.000 abstract description 3
- 238000010612 desalination reaction Methods 0.000 abstract 1
- 230000005611 electricity Effects 0.000 abstract 1
- 239000013535 sea water Substances 0.000 abstract 1
- 239000006096 absorbing agent Substances 0.000 description 3
- 239000006059 cover glass Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/138—Water desalination using renewable energy
- Y02A20/142—Solar thermal; Photovoltaics
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/20—Climate change mitigation technologies for sector-wide applications using renewable energy
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The utility model relates to a straight way type vacuum solar energy thermal-collecting tube which comprises a glass tube, wherein a metal thermal absorbing tube is respectively heat-sealed at the two ends of the glass tube, a solar energy selective heat absorbing coating is applied on the outside surface of the metal thermal absorbing tube, and a vacuum exhaust opening is arranged on the wall of the glass tube. The straight way type vacuum solar energy thermal-collecting tube is characterized in that a sylphon bellows is respectively at the two ends of a gap between the glass tube and the metal heat absorbing tube, the outer end of each sylphon bellows is welded with the metal end closure at the end into a whole through a transition ring, the inner end of each sylphon bellows is connected with a transition tube which passes through the sylphon bellows, passes out of the metal end closure at the end and is welded at the outer end of the metal thermal-absorbing tube, and the space between the glass tube and the metal thermal-absorbing tube is pumped to be high vacuum through an exhaust pipe. The utility model effectively improves the thermal-collecting efficiency of the whole thermal-collecting tube and prolonging the service life, and can be widely applied to the fields of solar refrigeration, industrial heating, seawater desalination, solar power electricity generation, and the like.
Description
Technical field
The utility model relates to a kind of solar collection element, particularly about a kind of straight through type vacuum solar energy thermal-collecting tube.
Background technology
General solar vacuum heat-collecting pipe mainly comprises glass tube absorber vacuum tube and metallic plate absorber vacuum tube, and the serviceability temperature of these two kinds of vacuum tubes when solar energy heating is mostly below 100 ℃.Another kind has the straight through type vacuum solar energy thermal-collecting tube of metal tube absorber; one end outer surface of its metal tube is welded with a bellows; this bellows is positioned at the outside of glass tube port; this bellows can absorb the thermal expansion of metal tube, thereby plays the sealing-in of end cap between cover glass pipe and the metal tube.But this solar energy heat collection pipe that only has a bellows structure, its application of temperature are only below 250 ℃.And solar energy thermal-power-generating to the heat-collecting temperature of thermal-collecting tube require up to 300 ℃～400 ℃.Therefore, general solar vacuum heat-collecting pipe does not possess the requirement of bearing higher temperature at present, and therefore its range of application is restricted.
Summary of the invention
At the problems referred to above, it is good that the purpose of this utility model provides a kind of bellows compensation effect, resistant to elevated temperatures straight through type vacuum solar energy thermal-collecting tube.
For achieving the above object, the utility model is taked following technical scheme: a kind of straight through type vacuum solar energy thermal-collecting tube, it comprises a glass tube, the two ends of described glass tube are respectively by a metal end hot pressing front cover metal heat absorption tube, described metal heat absorption tube outer surface scribbles the solar selective heat-absorbing coating, described glass tube walls is provided with a vaccum exhaust outlet, it is characterized in that: the two ends in space are respectively arranged with a bellows between described glass tube and the described metal heat absorption tube, the outer end of each described bellows is integrally welded by the described metal end of a transition rings and this end, the inner of each described bellows connects a transition conduit, described transition conduit is passed in described bellows, and the metal end that passes this end is welded on the outer end of described metal heat absorption tube, is pumped into by blast pipe between described glass tube and the described metal heat absorption tube to be high vacuum.
The temperature of the thermal-arrest working medium in the described metal heat absorption tube is more than 300 ℃, and it is 3MPa that described metal heat absorption tube can bear pressure.
The utility model is owing to take above technical scheme; it has the following advantages: 1, the utility model is owing to the two ends in space between glass tube and metal heat absorption tube are provided with a bellows respectively; and the bellows two ends are connected metal end and metal heat absorption tube respectively by transition rings; therefore in endothermic process; can absorb the thermal expansion of metal heat absorption tube by bellows; buffering metal heat absorption tube thermal expansion stresses, the cover glass metal sealing.Make the utility model can bear high temperature about 400 ℃, satisfy the needs of solar energy thermal-power-generating.2, the utility model is owing to be arranged on bellows between glass tube and the metal heat absorption tube, therefore can prevent not only that bellows is exposed to the etching problem that cause the glass tube outside, and can prevent that bellows is arranged on the outer problem that the heat of metal heat absorption tube is is outwards scattered and disappeared of pipe.The utility model has improved the collecting efficiency and the service life of whole thermal-collecting tube effectively, make the utility model can bear thermal-arrest requirement about 400 ℃, and then be widely used in the fields such as solar refrigeration, industrial heating, desalinization and solar energy thermal-power-generating.
Description of drawings
Fig. 1 is a vertical section structure schematic diagram of the present utility model
Fig. 2 is a bellows syndeton schematic diagram of the present utility model
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
As shown in Figure 1 and Figure 2, the utility model comprises a glass tube 1, a sheathed metal heat absorption tube 2 in the glass tube 1, and glass tube 1 two ends are integral with the glass heat press seal by a metal end 3 respectively, and metal heat absorption tube 2 outer surfaces are coated with the solar selective heat-absorbing coating.The two ends in space are provided with a bellows 4 respectively between glass tube 1 and metal heat absorption tube 2, the outer end of each bellows 4 is integrally welded with the metal end 3 of this end by a transition rings 5, the inner of each bellows 4 connects a transition conduit 6, transition conduit 6 is passed in bellows 4, and the metal end 3 that passes this end is welded on the outer end of metal heat absorption tube 2.Glass tube 1 tube wall is provided with an exhaust outlet 7, and the space between glass tube 1 and the metal heat absorption tube 2 is evacuated by exhaust outlet 7.
The utility model can be applicable in the solar thermal collection system, particularly is applied in the solar thermal collection system of outer optically focused.During use, under the condenser system effect, the temperature of the thermal-arrest working medium in the metal heat absorption tube 2 is reached more than 300 ℃ outside optically focused compares greater than 50 solar energy, metal heat absorption tube 2 can bear the pressure of 3Mpa, can satisfy the needs of present solar energy thermal-power-generating.
In the utility model, after being heated, bellows 4 can absorb the thermal expansion of metal heat absorption tube 2, reach the effect of the pressure of buffering metal heat absorption tube 2 thermal expansions, the sealing-in between cover glass pipe 1 and the metal end 3 is not destroyed.Bellows 4 is installed in glass tube inside, can reduce corrosion and heat dissipation problem that bellows 4 occurs when glass tube is outside.
In the utility model, the external diameter of glass tube 1 is 100mm～120mm, and the external diameter of metal heat absorption tube 2 is 38～70mm.Whole thermal-collecting tube total length 1.8m～4.2m.
Because the heat-conducting work medium in the metal heat absorption tube 2 of the present utility model can reach about 400 ℃, therefore can widen application of the present utility model greatly, particularly can be widely used in fields such as solar refrigeration, industrial heating, desalinization and solar energy thermal-power-generating.
Claims (2)
1, a kind of straight through type vacuum solar energy thermal-collecting tube, it comprises a glass tube, the two ends of described glass tube are respectively by a metal end hot pressing front cover metal heat absorption tube, described metal heat absorption tube outer surface scribbles the solar selective heat-absorbing coating, described glass tube walls is provided with a vaccum exhaust outlet, it is characterized in that: the two ends in space are respectively arranged with a bellows between described glass tube and the described metal heat absorption tube, the outer end of each described bellows is integrally welded by the described metal end of a transition rings and this end, the inner of each described bellows connects a transition conduit, described transition conduit is passed in described bellows, and the metal end that passes this end is welded on the outer end of described metal heat absorption tube, is pumped into by blast pipe between described glass tube and the described metal heat absorption tube to be high vacuum.
2, a kind of straight through type vacuum solar energy thermal-collecting tube as claimed in claim 1 is characterized in that: the temperature of the thermal-arrest working medium in the described metal heat absorption tube is more than 300 ℃, and it is 3MPa that described metal heat absorption tube can bear pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201090255U CN201251301Y (en) | 2008-07-03 | 2008-07-03 | Straight way type vacuum solar energy thermal-collecting tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201090255U CN201251301Y (en) | 2008-07-03 | 2008-07-03 | Straight way type vacuum solar energy thermal-collecting tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201251301Y true CN201251301Y (en) | 2009-06-03 |
Family
ID=40746974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201090255U Expired - Lifetime CN201251301Y (en) | 2008-07-03 | 2008-07-03 | Straight way type vacuum solar energy thermal-collecting tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201251301Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660848B (en) * | 2009-08-31 | 2011-02-16 | 王来雨 | Straight-through type solar energy vacuum heat collecting tube |
| CN108167797A (en) * | 2018-02-08 | 2018-06-15 | 广州聚能太阳能科技有限公司 | A kind of straight-through type solar energy steam generating system |
-
2008
- 2008-07-03 CN CNU2008201090255U patent/CN201251301Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660848B (en) * | 2009-08-31 | 2011-02-16 | 王来雨 | Straight-through type solar energy vacuum heat collecting tube |
| CN108167797A (en) * | 2018-02-08 | 2018-06-15 | 广州聚能太阳能科技有限公司 | A kind of straight-through type solar energy steam generating system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101498517B (en) | Solar high-temperature vacuum heat-collecting tube | |
| CN101307957A (en) | Straight through type vacuum solar energy thermal-collecting tube | |
| CN101275785A (en) | High temperature heat pipe central receiver for tower solar thermal power generation | |
| CN101387444A (en) | High-efficiency scaleless leak-proof pipe type solar heat collector | |
| CN201251301Y (en) | Straight way type vacuum solar energy thermal-collecting tube | |
| CN101387451B (en) | Closed-loop capillary pipe plate type solar heat collector | |
| CN101737965B (en) | Vacuum-tube sleeve combined dual-purpose solar heater | |
| CN201945073U (en) | Intermediate-temperature solar vacuum heat-collecting pipe | |
| CN101806504B (en) | Novel coupling type solar high-temperature heating pipe | |
| CN207083239U (en) | Electric heater sealing structure | |
| CN218469321U (en) | Linear Fresnel type high-temperature and high-pressure heat collecting pipe | |
| CN203719203U (en) | Internal condensation single-ended solar energy middle-high temperature heat gathering pipe | |
| CN101737966A (en) | Vacuum-tube heat-pipe combined high-temperature high-pressure steam solar heater | |
| CN103277927B (en) | Unspaced fin type solar heat collecting pipe | |
| CN202853139U (en) | Novel high-efficiency corrosion-resistant split type solar water heater | |
| CN201352016Y (en) | Explosion-proof type evacuated solar collector tube | |
| CN103017367B (en) | Tower type solar composite plate-fin hot plate type heat absorber with novel supporting structure | |
| CN104949352A (en) | Solar collector tube | |
| CN1916525B (en) | Medium temperature heat pipe receiver for solar thermal power generation | |
| CN107062660A (en) | The end seal structure of metal straight-through vacuum thermal-collecting tube | |
| CN101387449A (en) | Graphite filled vacuum glass tube open capillary solar collector tube | |
| CN111023589B (en) | Small point focusing solar tube type pressure-bearing air heat absorber | |
| CN201081428Y (en) | Full glass thermotube type pressurized water heater | |
| CN103673342A (en) | Parallel multitubular evacuated collector tube | |
| CN201476647U (en) | Waste heat recovering device suitable for gases containing corrosive components and dust |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090603 |