CN201945073U - Intermediate-temperature solar vacuum heat-collecting pipe - Google Patents
Intermediate-temperature solar vacuum heat-collecting pipe Download PDFInfo
- Publication number
- CN201945073U CN201945073U CN201120039433XU CN201120039433U CN201945073U CN 201945073 U CN201945073 U CN 201945073U CN 201120039433X U CN201120039433X U CN 201120039433XU CN 201120039433 U CN201120039433 U CN 201120039433U CN 201945073 U CN201945073 U CN 201945073U
- Authority
- CN
- China
- Prior art keywords
- metal
- vacuum heat
- glass outer
- inner pipe
- solar vacuum
- 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 69
- 239000011521 glass Substances 0.000 claims abstract description 47
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 12
- 239000000956 alloy Substances 0.000 claims abstract description 12
- 229910000833 kovar Inorganic materials 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 238000000576 coating method Methods 0.000 claims abstract description 8
- 239000006096 absorbing agent Substances 0.000 claims description 4
- 230000000740 bleeding effect Effects 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 2
- 230000007704 transition Effects 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000010512 thermal transition Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- 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
Landscapes
- Thermal Insulation (AREA)
Abstract
The utility model discloses an intermediate-temperature solar vacuum heat-collecting pipe, which comprises a metal inner pipe and a glass outer pipe with a flange, wherein the metal inner pipe is sleeved in the glass outer pipe, the two ends of the metal inner pipe and the two ends of the glass outer pipe are connected in sealing mode, and joints are provided with metal bellows and kovar alloy rings. The flange ends of the glass outer pipe are connected with the kovar alloy rings in press-to-seal mode, and the glass outer pipe is connected with the metal inner pipe through a metal transition ring to form a sealing space in vacuum state. A heat-absorbing section is formed by coating a heat-resisting selective-absorption coating on the metal inner pipe. The intermediate-temperature solar vacuum heat-collecting pipe integrates the advantages of a glass pipe and a metal pipe, enables the process to be easy, has high sunlight utilization ratio, and the highest utilization temperature is 300 DEG C. The applied arrange of the intermediate-temperature solar vacuum heat-collecting pipe is wide, and the intermediate-temperature solar vacuum heat-collecting pipe is convenient to be 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 temperature solar vacuum heat-collecting tube.
Background technology
Solar energy is subjected to increasing concern of people and use in recent years as a kind of new forms of energy of cleanliness without any pollution.Solar energy heat collector at present commonly used is a solar vacuum heat-collecting pipe, and it is divided into three kinds of normal temperature vacuum heat collection pipe, middle temperature vacuum heat collection pipe and middle high-temperature vacuum heat-collecting tubes.Wherein, the normal temperature vacuum heat collection pipe is cheap, but collecting efficiency is not high, and operating temperature is also lower; High-temperature vacuum heat-collecting tube collecting efficiency height, maximum operating temperature can reach 400 ℃～450 ℃, but cost is higher; In warm vacuum heat collection pipe collecting efficiency height, the middle high-temperature heat-collection pipe of cost is low, project such as warm steam boiler in being applicable to, so be with a wide range of applications, market potential is huge.Yet the maximum temperature of temperature solar vacuum heat-collecting tube is 200～250 ℃ in existing, and common range of application only is between 120 ℃～160 ℃, and complex manufacturing, and the process-cycle is longer.
Summary of the invention
The purpose of this utility model provides that a kind of technology is simple, the middle temperature solar vacuum heat-collecting tube of sunshine utilization rate height, applied range.
A kind of middle temperature solar vacuum heat-collecting tube of the present utility model, comprise metal inner pipe, flanged (FLGD) glass outer tube, described metal inner pipe is inserted among the glass outer tube, metal inner pipe is connected by metal bellows with the flange of glass outer tube, form closed cavity between metal inner pipe and the glass outer tube, be provided with the kovar alloy ring between the flange of metal bellows and glass outer tube, metal bellows all is arranged in closed cavity.
Advantage of the present utility model is, temperature solar vacuum heat-collecting tube in described, owing to comprise metal inner pipe, flanged (FLGD) glass outer tube, metal inner pipe is inserted among the glass outer tube, the flange end and the metal inner pipe of glass outer tube are tightly connected, form closed cavity between metal inner pipe and the glass outer tube, integrate the advantage of glass tube and metal tube, technology is simple, sunshine utilization rate height, applied range.
Description of drawings
Fig. 1 is the structural representation of temperature solar vacuum heat-collecting tube in the utility model.
Among the figure:
1-metal inner pipe 2-metal transfer ring 3-kovar alloy ring 4-metal crimp sealing wire
The long-acting getter of 5-glass outer tube 6-metal bellows 7-adpting flange 8-
9-bleeding point 10-absorber coatings 11-closed cavity
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
The utility model is a kind of middle temperature solar vacuum heat-collecting tube, the preferable specific embodiment as shown in Figure 1, comprise metal inner pipe 1, flanged (FLGD) glass outer tube 5, described metal inner pipe 1 is inserted among the glass outer tube 5, the flange end of glass outer tube 5 and metal inner pipe 1 are tightly connected, and form closed cavity 11 between metal inner pipe 1 and the glass outer tube 5.The two ends of metal inner pipe 1 are respectively equipped with adpting flange 7, conveniently are used for and being connected of other equipment or pipeline.
When middle temperature solar vacuum heat-collecting tube is worked, the thermal-arrest medium flows in metal inner pipe 1, sunshine sees through glass outer 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 outer tube 5 plays insulation effect with closed cavity 11, plays effective insulation effect in order to make closed cavity 11, is preferably vacuum in the closed cavity 11.Be provided with bleeding point 9 so be preferably in glass outer tube 5, be used to take away closed cavity 11 gas inside, make closed cavity 11 be vacuum, after the end of bleeding, be these bleeding point 9 sealings.
To keep higher vacuum in the closed cavity 11 in order making, to reduce the atmospheric density in the closed cavity 11, reduce the convection current heat waste, preferably be provided with long-acting getter 8 in the closed cavity 11.Long-acting getter 8 can be fixed on the metal tube, also can be fixed on the metal transfer ring 2, is mainly used to absorb the thermal-collecting tube gas inside.
Described metal inner pipe 1 is provided with metal bellows 6 with the junction of glass outer tube 5, metal bellows 6 is welded on the metal inner pipe 1, metal bellows 1 all is arranged in closed cavity 11, metal bellows 6 connects metal transfer ring 2, metal transfer ring 2 connects kovar alloy ring 3, the kovar alloy ring 3 flange end press seal by metal crimp sealing wire 4 and glass outer tube 5 and then carries out the package sealing with laser welding with metal transfer ring 2 together.
The utility model utilizes the seal and the scalability of metal bellows 6, keeps the vacuum in the closed cavity 11 and offsets part because the stress that expands with heat and contract with cold and produce.
The utility model adopts the flange end press seal of kovar alloy ring 3 by metal crimp sealing wire 4 and glass outer tube 5 together, and then carry out package sealing with laser with metal transfer ring 2 and weld, solve the hot matching problem of glass enclosure tube 5 and kovar alloy ring 3 to a certain extent, and guaranteed closed cavity 11 good air-tightness.The main effect of kovar alloy ring 3 is the coupling welding transition that realize glass and metal, guarantees the seal of thermal-collecting tube.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.
Preferably scribble high temperature resistant absorber coatings 10 on the metal inner pipe 1, high-temperature-resistant selective absorber coatings 10 is coated with and is plated on the metal inner pipe 1, the maximum operating temperature of coating far above existing coating serviceability temperature, can make the thermal-arrest medium produce higher temperature at 600 ℃～800 ℃.
Metal inner pipe 1 preferably adopts the metal material manufacturing of corrosion-resistant, high thermal conductance and high life, can bear 600 ℃ high temperature, and can bear the thermal-arrest medium of 0.1～2MPa pressure, applied range.
Described glass outer tube 5 is three sections glass tube butt joint moulding, and material is 3.3 high-boron-silicon glass.
The utility model is a kind of middle temperature solar vacuum heat-collecting tube of metal-glass composite construction, integrates the advantage of glass tube and metal tube, sunshine utilization rate height, and technology is simple, is widely used.On the basis of having adopted well-designed such as bellows interior placement, improve to some extent again.The characteristics that are different from general thermal-collecting tube are to have increased the sunshine utilization rate, and thermal transition efficient is greatly enhanced.In addition, because the glass flange end has adopted press-sealing process, make glass enclosure tube more reliable with being connected of metal inner pipe, air-tightness is better, and press seal speed is fast, and the working (machining) efficiency height is with low cost.Maximum operation (service) temperature is 300 ℃, is applicable to steam boiler and other similar apparatus for utilization of solar energy with solar, has extensive market prospects and using value.
Claims (9)
1. temperature solar vacuum heat-collecting tube in a kind, it is characterized in that, comprise metal inner pipe, flanged (FLGD) glass outer tube, described metal inner pipe is inserted among the glass outer tube, metal inner pipe is connected by metal bellows with the flange of glass outer tube, form closed cavity between metal inner pipe and the glass outer tube, be provided with the kovar alloy ring between the flange of metal bellows and glass outer tube, metal bellows all is arranged in closed cavity.
2. a kind of middle temperature solar vacuum heat-collecting tube according to claim 1 is characterized in that metal bellows is welded on the metal inner pipe.
3. a kind of middle temperature solar vacuum heat-collecting tube according to claim 1, it is characterized in that, described metal bellows connects the metal transfer ring, the metal transfer ring connects the kovar alloy ring, the flange end press seal of kovar alloy ring by metal crimp sealing wire and glass outer tube and then carries out seal welding with the metal transfer ring together.
4. a kind of middle temperature solar vacuum heat-collecting tube according to claim 1 is characterized in that described glass outer tube is provided with bleeding point.
5. a kind of middle temperature solar vacuum heat-collecting tube according to claim 1 is characterized in that described closed cavity is a vacuum.
6. a kind of middle temperature solar vacuum heat-collecting tube according to claim 1 is characterized in that, is provided with long-acting getter in the described closed cavity.
7. a kind of middle temperature solar vacuum heat-collecting tube according to claim 1 is characterized in that the two ends of described metal inner pipe are respectively equipped with adpting flange.
8. a kind of middle temperature solar vacuum heat-collecting tube according to claim 1 is characterized in that, described glass outer tube is three sections glass tubes butt joint moulding, and material is 3.3 high-boron-silicon glass.
9. according to any described a kind of middle temperature solar vacuum heat-collecting tube of claim 1 to 8, it is characterized in that described metal inner pipe scribbles high temperature resistant absorber coatings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120039433XU CN201945073U (en) | 2011-02-16 | 2011-02-16 | Intermediate-temperature solar vacuum heat-collecting pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120039433XU CN201945073U (en) | 2011-02-16 | 2011-02-16 | Intermediate-temperature solar vacuum heat-collecting pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201945073U true CN201945073U (en) | 2011-08-24 |
Family
ID=44472414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120039433XU Expired - Lifetime CN201945073U (en) | 2011-02-16 | 2011-02-16 | Intermediate-temperature solar vacuum heat-collecting pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201945073U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165472A (en) * | 2014-09-03 | 2014-11-26 | 南京诚远太阳能科技有限公司 | End sealing structures of vacuum heat collection tube |
| CN105588351A (en) * | 2015-12-30 | 2016-05-18 | 南京诚远太阳能科技有限公司 | Solar thermal collecting pipe and processing method thereof |
| CN109648205A (en) * | 2018-12-17 | 2019-04-19 | 沧州天瑞星光热技术有限公司 | A kind of high temperature solar energy heat collection pipe general assembly welding method and fixture system |
-
2011
- 2011-02-16 CN CN201120039433XU patent/CN201945073U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165472A (en) * | 2014-09-03 | 2014-11-26 | 南京诚远太阳能科技有限公司 | End sealing structures of vacuum heat collection tube |
| CN104165472B (en) * | 2014-09-03 | 2016-01-13 | 南京诚远太阳能科技有限公司 | The end seal structure of vacuum heat collection pipe |
| CN105588351A (en) * | 2015-12-30 | 2016-05-18 | 南京诚远太阳能科技有限公司 | Solar thermal collecting pipe and processing method thereof |
| CN109648205A (en) * | 2018-12-17 | 2019-04-19 | 沧州天瑞星光热技术有限公司 | A kind of high temperature solar energy heat collection pipe general assembly welding method and fixture system |
| CN109648205B (en) * | 2018-12-17 | 2021-06-11 | 沧州天瑞星光热技术有限公司 | Assembly welding method and tool system for medium-high temperature solar heat collecting pipe assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110824 |
|
| CX01 | Expiry of patent term |