CN221055268U - Explosion-proof solar glass straight-through vacuum tube with metal corrugation - Google Patents
Explosion-proof solar glass straight-through vacuum tube with metal corrugation Download PDFInfo
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- CN221055268U CN221055268U CN202322404875.5U CN202322404875U CN221055268U CN 221055268 U CN221055268 U CN 221055268U CN 202322404875 U CN202322404875 U CN 202322404875U CN 221055268 U CN221055268 U CN 221055268U
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- tube
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- vacuum
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- 239000011521 glass Substances 0.000 title claims abstract description 84
- 239000002184 metal Substances 0.000 title claims abstract description 55
- 239000000463 material Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 229910000833 kovar Inorganic materials 0.000 claims description 4
- 229910000986 non-evaporable getter Inorganic materials 0.000 claims description 4
- CFOAUMXQOCBWNJ-UHFFFAOYSA-N [B].[Si] Chemical compound [B].[Si] CFOAUMXQOCBWNJ-UHFFFAOYSA-N 0.000 claims description 2
- 238000004880 explosion Methods 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 230000008602 contraction Effects 0.000 abstract description 3
- 229910052796 boron Inorganic materials 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Joining Of Glass To Other Materials (AREA)
Abstract
The utility model relates to an explosion-proof solar glass straight-through vacuum tube with metal corrugations, which comprises a vacuum tube and a metal tube, wherein the vacuum tube is sleeved on the metal tube, the vacuum tube consists of a glass outer tube and a glass inner tube, a metal corrugated ring is welded on the vacuum tube, the metal corrugated ring provides a telescopic space for expansion and contraction of the vacuum tube, the stress in the vacuum tube glass is eliminated, the explosion of the vacuum tube is prevented, the safety performance is good, the service life of the solar glass straight-through vacuum tube is prolonged, and the cost is reduced.
Description
Technical Field
The utility model relates to the technical field of solar energy application, in particular to an explosion-proof solar glass straight-through vacuum tube with metal corrugations.
Background
Most of the vacuum solar heat collecting pipes are blind pipes and all-glass wavy straight-through pipes, the temperature difference between the inner pipe and the outer pipe of the vacuum interlayer is large due to the existence of heat absorption coatings on the inner pipe of the vacuum interlayer, so that the stress generated by the inner pipe and the outer pipe is uneven. The existing vacuum solar heat collecting tube is low in safety and high in cost due to the defects of the structure and the glass material, and development, application and popularization of products are affected.
Disclosure of utility model
Aiming at the problems existing in the prior art, the utility model aims to provide the explosion-proof solar glass straight-through vacuum tube with metal corrugations, and the aims of good sealing performance, quick stress relief, compensation of different axial expansion of the glass tubes inside and outside the vacuum tube due to temperature difference, strong anti-riot pressure resistance, high temperature resistance and long service life are achieved through the improvement of the structure of the solar vacuum tube.
In order to achieve the above purpose, the present utility model is realized by the following technical scheme.
The explosion-proof solar glass straight-through vacuum tube with the metal corrugations comprises a vacuum tube and a metal tube, wherein the vacuum tube is sleeved on the metal tube, the vacuum tube consists of a glass outer tube and a glass inner tube, and a metal corrugated ring is welded on the vacuum tube.
According to the solar glass straight-through vacuum tube provided by the utility model, when the temperature is higher, the glass of the vacuum tube expands, the metal corrugated ring contracts, when the temperature is low, the glass of the vacuum tube contracts, the metal corrugated ring extends, the metal corrugated ring provides an axial expansion space for the expansion and contraction of the vacuum tube, the stress in the glass of the vacuum tube can be eliminated, the explosion of the vacuum tube is prevented, the safety performance is good, the service life of the solar glass straight-through vacuum tube is prolonged, and the cost is reduced.
Preferably, a metal corrugated ring is welded on the glass outer tube. In the use, the glass outer tube contacts with the environment, and the temperature is lower, and the glass inner tube is higher relative ground temperature, when the glass inner tube expands, can strut the glass outer tube, and the metal ripple ring is extension this moment, provides axial expansion space for the glass inner tube, eliminates the stress difference of glass inner tube and glass outer tube, plays explosion-proof effect.
Preferably, the metal corrugated ring is welded on the glass inner tube, and when the glass inner tube expands at high temperature, the metal corrugated ring contracts to provide an axial expansion space for the glass inner tube, so that the stress difference between the glass inner tube and the glass outer tube is eliminated, and an explosion-proof effect is achieved.
Preferably, the glass inner tube and the glass outer tube are respectively welded with metal corrugated rings, when the stress difference is generated between the glass inner tube and the glass outer tube due to the temperature difference, the metal corrugated rings on the glass inner tube and the glass outer tube cooperate to eliminate the stress difference, and the glass outer tube and the glass inner tube are compensated to generate different axial expansion due to the temperature difference, so that the explosion-proof effect is achieved.
Preferably, the glass material of the vacuum tube is low boron silicon, and the metal corrugated ring is kovar alloy. The low-boron silicon has better mechanical strength and toughness, the thermal expansion coefficient of the kovar alloy increases along with the temperature rise, the expansion space required by the vacuum tube at different temperatures can be met, and the low-boron silicon can be well sealed and welded with the low-boron silicon.
Preferably, the surface of the vacuum side of the glass inner tube is coated with a solar energy absorbing layer, so that the solar energy utilization rate can be further improved.
Further, the non-evaporable getter is placed in the vacuum tube, so that residual gas in the vacuum tube can be absorbed, and the vacuum degree in the vacuum tube is ensured.
Further, graphite sealing rings are arranged at the joints of the vacuum tube and the two ends of the metal tube, so that the stability of the whole structure of the solar glass straight-through vacuum tube can be ensured.
Further, the expansion joints are arranged on the metal pipe at intervals, so that space is provided for expansion and contraction of the metal pipe on one hand, and on the other hand, due to the existence of the expansion joints, the distance of a medium in the metal pipe is prolonged, so that the heat conduction efficiency of the medium and vacuum can be improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of the structure of the glass outer tube of the present utility model;
FIG. 3 is a schematic view of the structure of the glass inner tube of the present utility model;
FIG. 4 is a schematic view of a metal tube according to the present utility model;
Reference numerals: the glass comprises a glass outer tube, a glass inner tube, a metal tube 3, a metal corrugated ring 4, a graphite sealing ring 5, a telescopic joint 6, an extraction opening 7 and a non-evaporable getter 8;
Detailed Description
Embodiments of the present utility model will be described in detail below with reference to examples, but it will be understood by those skilled in the art that the following examples are only for illustrating the present utility model and should not be construed as limiting the scope of the present utility model.
Example 1
Referring to fig. 1 to 4, an explosion-proof solar glass through vacuum tube with metal corrugations comprises a vacuum tube and a metal tube 3, wherein the vacuum tube is sleeved on the metal tube 3, the vacuum tube is composed of a glass outer tube 1 and a glass inner tube 2, the glass outer tube 1 and the glass inner tube 2 form a vacuum space, an extraction opening 7 is arranged on the glass outer tube 1, a non-evaporable getter 8 is arranged in the vacuum space, a metal corrugated ring 4 is welded on the glass outer tube 1, a solar absorbing layer is coated on the surface of the vacuum side of the glass inner tube 2, the glass material of the vacuum tube is low-boron silicon, the metal corrugated ring 4 is kovar alloy, expansion joints 6 are arranged on the metal tube 3 at intervals, and graphite sealing rings 5 are arranged at the joints of the two ends of the vacuum tube and the metal tube.
In the above embodiment, in the use process, the vacuum machine vacuumizes the inside of the vacuum tube through the extraction opening 7, the medium enters from one end of the metal tube 3 and exits from the other end, when the temperature of the glass inner tube 2 of the vacuum tube is higher, the expansion can be generated to prop the glass outer tube 1 open, at the moment, the metal corrugated ring 4 stretches, the stress in the glass of the vacuum tube is eliminated, the explosion of the vacuum tube is prevented, the safety is improved, and meanwhile, the service life of the solar glass straight-through vacuum tube is prolonged.
Example two
Unlike the first embodiment, the glass inner tube 2 is welded with a metal corrugated ring 4, when the glass inner tube 2 of the vacuum tube expands due to high temperature, the metal corrugated ring contracts, so as to provide an axial expansion space for the glass inner tube 2, thereby achieving the purpose of preventing the explosion of the vacuum tube.
Example III
Unlike the first embodiment, the glass inner tube 2 and the glass outer tube 1 are respectively welded with metal corrugated rings 4, when the glass outer tube 1 and the glass inner tube 2 generate stress difference due to temperature difference, the metal corrugated rings 4 on the glass outer tube 1 and the glass inner tube cooperate to eliminate the stress difference, and meanwhile, the glass outer tube and the glass inner tube are compensated for generating different axial expansion due to temperature difference, so that the aim of preventing the vacuum tube from bursting is achieved.
While the utility model has been described in detail in this specification with reference to the general description and the specific embodiments thereof, it will be apparent to one skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the utility model and are intended to be within the scope of the utility model as claimed.
Claims (5)
1. The explosion-proof solar glass straight-through vacuum tube with the metal corrugations is characterized by comprising a vacuum tube and a metal tube (3), wherein the vacuum tube is sleeved on the metal tube (3), the vacuum tube consists of a glass outer tube (1) and a glass inner tube (2), and a metal corrugated ring (4) is welded on the vacuum tube; metal corrugated rings (4) are welded on the glass inner tube (2) and the glass outer tube (1) respectively; expansion joints (6) are arranged on the metal pipe at intervals.
2. An explosion-proof solar glass straight-through vacuum tube with metal corrugations according to claim 1, wherein the glass material of the vacuum tube is low boron silicon, and the material of the metal corrugated ring (4) is kovar.
3. An explosion-proof solar glass straight-through vacuum tube with metal corrugations according to claim 1, wherein the vacuum side surface of the glass inner tube (2) is coated with a solar absorbing layer.
4. An explosion-proof solar glass straight-through vacuum tube with metal corrugations according to claim 1, wherein a non-evaporable getter (8) is placed inside the vacuum tube.
5. An explosion-proof solar glass straight-through vacuum tube with metal corrugations according to claim 1, wherein graphite sealing rings (5) are arranged at the connection parts of the vacuum tube and the two ends of the metal tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322404875.5U CN221055268U (en) | 2023-09-05 | 2023-09-05 | Explosion-proof solar glass straight-through vacuum tube with metal corrugation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322404875.5U CN221055268U (en) | 2023-09-05 | 2023-09-05 | Explosion-proof solar glass straight-through vacuum tube with metal corrugation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221055268U true CN221055268U (en) | 2024-05-31 |
Family
ID=91201538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322404875.5U Active CN221055268U (en) | 2023-09-05 | 2023-09-05 | Explosion-proof solar glass straight-through vacuum tube with metal corrugation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221055268U (en) |
-
2023
- 2023-09-05 CN CN202322404875.5U patent/CN221055268U/en active Active
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