CN206648325U - Glass-to-metal sealing part and solar vacuum heat-collecting pipe - Google Patents
Glass-to-metal sealing part and solar vacuum heat-collecting pipe Download PDFInfo
- Publication number
- CN206648325U CN206648325U CN201720314163.6U CN201720314163U CN206648325U CN 206648325 U CN206648325 U CN 206648325U CN 201720314163 U CN201720314163 U CN 201720314163U CN 206648325 U CN206648325 U CN 206648325U
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- China
- Prior art keywords
- glass
- becket
- glass tube
- sealing structure
- metal
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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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- Joining Of Glass To Other Materials (AREA)
Abstract
The utility model discloses a kind of solar vacuum heat-collecting tube glass metal sealing structure for belonging to glass and alloying technology field.For the sealing-in method using hot melt encapsulation technique, becket one end is in glass tube and concentric with glass tube, and glass tube is similar with the coefficient of expansion of becket, directly heat-sealable.Production cost is greatly reduced on the premise of it can ensure sealing strength and cold-resistant thermal shock in the sealing structure.
Description
Technical field
Glass-to-metal sealing technical field of structures is the utility model is related to, more particularly to a kind of solar vacuum heat-collecting pipe glass
Glass metal sealing.
Background technology
Solar light-heat power-generation technology mainly has slot type, Fresnel, tower, four kinds of butterfly, wherein slot type and Fresnel
Formula core is will to connect the sunshine convergence being collected into using groove type parabolic mirror or Fresnel planar array speculum
To the thermal-collecting tube of focal position, the temperature of thermal-collecting tube is reached more than 400 DEG C, and then heat the medium inside thermal-collecting tube, it is high
Warm medium transfers heat to water by heat exchange, and water is generated electricity by thermosetting Steam Actuation Steam Turbine.
The structure of thermal-collecting tube is a middle metal tube for being coated with coating for selective absorption and is placed on outside metal tube and gold
Category is managed concentric glass tube and formed, and because the difference of thermal expansion coefficients of metal tube and glass tube is very big, needs therebetween special
Expansion joint buffer due to deformation quantity caused by temperature, one end of expansion joint passes through flange ring and welded with metal tube, the other end
Pass through welding metal rings of the flange ring together with one end and glass sealing.
The glass-to-metal sealing part in thermal-collecting tube has three kinds of processes at present：Matched seal, unmatched sealing, transition
Sealing-in.
Wherein：
Matched seal：The expansion coefficient similar of metal and glass, sealing strength is high, and cold-resistant thermal shock resistance properties is good, and cost is high
It is high.
Unmatched sealing：Metal is different from the coefficient of expansion of glass, using very thin stainless steel substrates（Thickness 0.02 ~
0.5mm）It is 3.3 × 10 with the coefficient of expansion-6Mm/ DEG C of the direct sealing-in of Pyrex.Cost is cheap, and sealing strength is low, cold-hot
Impact is general.
Transition sealing：The glass at sealing-in position is using the coefficient of expansion and material similar in metalwork, then using expansion system
The mode of number gradual transition is transitioned into the coefficient of expansion as 3.3 × 10-6Mm/ DEG C of Pyrex section, thermal shock is general, technics comparing
It is numerous and diverse.
Utility model content
The purpose of this utility model is to provide that a kind of sealing strength is high, and cost is low, the glass-to-metal sealing of concise in technology
Structure, the structure is especially suitable for solar vacuum heat-collecting pipe technical field.
The sealing-in in order that glass tube and becket can succeed, the utility model is using hot melt encapsulation technique, it is desirable to the two
Expansion coefficient similar.
In order that the expansion coefficient similar of glass metal, becket is using expansion coefficient 4.0 ~ 5.5 × 10-6mm/
DEG C Kovar alloy, its main component is nickel cobalt iron；Glass tube is using expansion coefficient 3.3 ~ 5.5 × 10-6Mm/ DEG C of boron
Silica glass.
For concise in technology, facilitating sealing-in, becket end wall thickness is 0.4mm ~ 1.5mm, Pyrex wall thickness is 2 ~
5mm, becket one end is in glass tube.
In order that the easier embedded glass tube of becket, the built-in end surfaces externally and internally of becket can be set to inclined-plane,
Can be that planar outer surfaces are inclined-planes with inner surface, can also be inner surface is that inclined-plane outer surface is plane, the end wall of built-in end
Thickness is 0.2mm ~ 0.4mm.
The beneficial effects of the utility model are：The utility model discloses a kind of sealing structure, and it is using expansion system
Number scope is 4.0 ~ 5.5 × 10-6The thin-wall metal ring that mm/ DEG C of end wall thickness is 0.4mm ~ 1.5mm is with expansion coefficient 3.3
~5.5×10-6The direct sealing-in of borosilicate glass tube that mm/ DEG C of wall thickness is 2 ~ 5mm, can ensure sealing strength and cold-resistant thermal shock
On the premise of, production cost is greatly reduced.
Brief description of the drawings
Accompanying drawing 1 is glass metal part schematic cross section of the present utility model.
Accompanying drawing 2 is the glass schematic cross section of glass metal part different structure of the present utility model.
Accompanying drawing 3 is the glass schematic cross section of glass metal part different structure of the present utility model.
Accompanying drawing 4 is the glass schematic cross section of glass metal part different structure of the present utility model.
Label declaration：1- beckets；2- glass tubes；3- becket built-in ends.
Embodiment
The utility model is further described with reference to the accompanying drawings and in conjunction with the embodiments.
Embodiment 1：
Referring to the drawings 1, it is 0.4mm ~ 1.5mm expansion coefficients 4.0 ~ 5.5 × 10 that becket 1, which is end wall thickness,-6mm/
DEG C Kovar alloy thin-wall metal ring, its main component is nickel cobalt iron；Glass tube 2 is that wall thickness exists for 2 ~ 5mm expansion coefficients
3.3~5.5×10-6Mm/ DEG C of borosilicate glass tube, in glass tube, glass tube is concentric with becket for becket one end, embedded
Hold 3 surfaces externally and internallies parallel.Reusable heat seals the direct sealing-in of technology.
Embodiment 2：
Referring to the drawings 2, it is 0.4mm ~ 1.5mm expansion coefficients 4.0 ~ 5.5 × 10 that becket 1, which is end wall thickness,-6mm/
DEG C Kovar alloy thin-wall metal ring, its main component is nickel cobalt iron；Glass tube 2 is that wall thickness exists for 2 ~ 5mm expansion coefficients
3.3~5.5×10-6Mm/ DEG C of borosilicate glass tube, becket one end is in glass tube, and glass tube is concentric with becket, metal
The inner surface of ring built-in end 3 is plane, and outer surface is acclivitous inclined-plane, and the end wall thickness of built-in end is 0.2mm ~ 0.4mm.
Easier becket 1 can be embedded according to above structure setting in glass tube 2.
Embodiment 3：
Referring to the drawings 3, it is 0.4mm ~ 1.5mm expansion coefficients 4.0 ~ 5.5 × 10 that becket 1, which is end wall thickness,-6mm/
DEG C Kovar alloy thin-wall metal ring, its main component is nickel cobalt iron；Glass tube 2 is that wall thickness exists for 2 ~ 5mm expansion coefficients
3.3~5.5×10-6Mm/ DEG C of borosilicate glass tube, becket one end is in glass tube, and glass tube is concentric with becket, metal
The outer surface of ring built-in end 3 is plane, and inner surface is the inclined-plane tilted down, and the end wall thickness of built-in end is 0.2mm ~ 0.4mm.
Easier becket 1 can be embedded according to above structure setting in glass tube 2.
Embodiment 4:
Referring to the drawings 4, it is 0.4mm ~ 1.5mm expansion coefficients 4.0 ~ 5.5 × 10 that becket 1, which is end wall thickness,-6mm/
DEG C Kovar alloy thin-wall metal ring, its main component is nickel cobalt iron；Glass tube 2 is that wall thickness exists for 2 ~ 5mm expansion coefficients
3.3~5.5×10-6Mm/ DEG C of borosilicate glass tube, becket one end is in glass tube, and glass tube is concentric with becket, metal
The inner surface of ring built-in end 3 is the inclined-plane tilted down, and outer surface is acclivitous inclined-plane, and the end wall thickness of built-in end is
0.2mm~0.4mm。
Easier becket 1 can be embedded according to above structure setting in glass tube 2.
Embodiment 2, embodiment 3, embodiment 4 are embedded in the structure of glass tube for several different metal rings, its effect obtained
It is identical.
Embodiment of the present utility model is the foregoing is only, not thereby limits the scope of the claims of the present utility model, it is every
The equivalent structure or equivalent flow conversion made using the utility model specification and accompanying drawing content, or be directly or indirectly used in
Other related technical areas, similarly it is included in scope of patent protection of the present utility model.
Claims (8)
1. a kind of glass-to-metal sealing structure, it is characterised in that structure includes becket and glass tube, the expansion of the becket
Coefficient range is 4.0 ~ 5.5 × 10-6Mm/ DEG C, end wall thickness is 0.4mm ~ 1.5mm；The expansion coefficient of the glass tube exists
3.3~5.5×10-6Mm/ DEG C, end wall thickness is 2 ~ 5mm, and in glass tube, glass tube and becket are concentric for becket one end,
Becket is fixed with glass tube sealing-in.
2. a kind of glass-to-metal sealing structure according to claim 1, it is characterised in that the material of the becket is section
Watt alloy.
3. a kind of glass-to-metal sealing structure according to claim 1, it is characterised in that the material of the glass tube is boron
Silica glass.
4. a kind of glass-to-metal sealing structure according to claim 1, it is characterised in that becket built-in end inner surface is
Plane, outer surface are acclivitous inclined-planes.
5. a kind of glass-to-metal sealing structure according to claim 1, it is characterised in that becket built-in end outer surface is
Plane, inner surface are the inclined-planes tilted down.
6. a kind of glass-to-metal sealing structure according to claim 1, it is characterised in that becket built-in end inner surface is
The inclined-plane tilted down, outer surface are acclivitous inclined-planes.
A kind of 7. glass-to-metal sealing structure according to claim 4 to 6 any one, it is characterised in that the metal
Ring built-in end end wall thickness is 0.2mm ~ 0.4mm.
8. a kind of solar vacuum heat-collecting pipe, it is characterised in that including the glass metal described in claim 1 to 6 any one
Sealing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720314163.6U CN206648325U (en) | 2017-03-29 | 2017-03-29 | Glass-to-metal sealing part and solar vacuum heat-collecting pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720314163.6U CN206648325U (en) | 2017-03-29 | 2017-03-29 | Glass-to-metal sealing part and solar vacuum heat-collecting pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206648325U true CN206648325U (en) | 2017-11-17 |
Family
ID=60278556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720314163.6U Active CN206648325U (en) | 2017-03-29 | 2017-03-29 | Glass-to-metal sealing part and solar vacuum heat-collecting pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206648325U (en) |
-
2017
- 2017-03-29 CN CN201720314163.6U patent/CN206648325U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221207 Address after: 100089 room 916, scientific research building, No.61 Zhichun Road, Haidian District, Beijing Patentee after: BEIJING TRX SOLAR TECHNOLOGY Co.,Ltd. Address before: 061000 No.29, East Jilin Avenue, high tech Industrial Development Zone, Cangzhou City, Hebei Province Patentee before: CANGZHOU TRX SOLAR TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right |