CN220155431U - Porcelain shell structure for improving insulation of vacuum arc extinguishing chamber - Google Patents
Porcelain shell structure for improving insulation of vacuum arc extinguishing chamber Download PDFInfo
- Publication number
- CN220155431U CN220155431U CN202321689461.5U CN202321689461U CN220155431U CN 220155431 U CN220155431 U CN 220155431U CN 202321689461 U CN202321689461 U CN 202321689461U CN 220155431 U CN220155431 U CN 220155431U
- Authority
- CN
- China
- Prior art keywords
- porcelain shell
- extinguishing chamber
- vacuum arc
- shell structure
- sealing ring
- 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.)
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- 229910052573 porcelain Inorganic materials 0.000 title claims abstract description 53
- 238000009413 insulation Methods 0.000 title claims abstract description 31
- 238000007789 sealing Methods 0.000 claims abstract description 24
- 238000003466 welding Methods 0.000 claims abstract description 11
- 230000007704 transition Effects 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 238000010891 electric arc Methods 0.000 abstract description 2
- 239000000919 ceramic Substances 0.000 description 10
- 230000003068 static effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The utility model discloses a porcelain shell structure for improving insulation of a vacuum arc-extinguishing chamber, which comprises a porcelain shell (1) and is characterized in that: the end face of the porcelain shell (1) is connected with the sealing ring (3) through the welding transition ring (2), and the porcelain shell (1) outside the sealing ring (3) is provided with an extension part (4). The utility model is provided with a section of extension part on the basis of the conventional porcelain shell structure, and mainly has the effects of insulating and shielding the welding part of the sealing ring and the porcelain shell, increasing the creepage distance of the porcelain shell at the position, improving the insulating strength between the vacuum arc extinguishing chamber and the tank body (or other containers) and avoiding the problems of insulation failure such as arc discharge breakdown and the like. By designing the extension portion to be rectangular, L-shaped bent, corrugated, and the like, the insulation effect can be further improved.
Description
Technical Field
The utility model relates to a porcelain shell structure for improving insulation of a vacuum arc-extinguishing chamber, and belongs to the technical field of porcelain shells of vacuum arc-extinguishing chambers.
Background
The vacuum arc-extinguishing chamber is mainly applied to a three-phase alternating current distribution system and an electric vacuum device which realizes the switching-on and switching-off functions of a power circuit by a pair of contacts (electrodes) sealed in vacuum. As shown in figure 1, the ceramic shell 1 is cylindrical, the end face of the ceramic shell 1 is connected with the sealing ring 3 through the welding transition ring 2, and the welding position of the sealing ring 3 and the ceramic shell 1 is a three-phase boundary area, so that the field strength is high.
Chinese patent CN110648878A discloses a high voltage class vacuum interrupter with an outer shield: comprises a vacuum arc-extinguishing chamber body (6), a movable end outer shielding cover (2) and a static end outer shielding cover (4); the movable end outer shielding cover (2) is welded at the joint of the movable end cover plate (1) and the ceramic shell (3) outside the vacuum arc-extinguishing chamber body (6), and the static end outer shielding cover (4) is welded at the joint of the static end cover plate (5) and the ceramic shell (3) outside the vacuum arc-extinguishing chamber body (6); the movable end outer shielding cover (2) can balance the electric field at the junction of the movable end cover plate (1), the ceramic shell (3) and the air three phases of the vacuum arc extinguishing chamber; meanwhile, the static end outer shielding cover (4) can balance electric field distribution at the junction of the static end cover plate (5), the ceramic shell (3) and the air three phases of the vacuum arc extinguishing chamber; the insulation performance of the vacuum arc extinguishing chamber can be obviously improved. The adopted outer shielding cover needs to be manufactured and installed in addition, has a complex structure and improves the production cost.
Disclosure of Invention
In order to solve the technical problems, the porcelain shell structure for improving the insulation of the vacuum arc-extinguishing chamber has a simple structure and can improve the insulation strength between an arc-extinguishing chamber product and a tank (or other containers).
The utility model provides a porcelain shell structure for improving insulation of a vacuum arc-extinguishing chamber, which comprises a porcelain shell, wherein the end face of the porcelain shell is connected with a sealing ring through a welding transition ring, and the porcelain shell at the outer side of the sealing ring is provided with an extension part.
According to the porcelain shell structure for improving insulation of the vacuum arc-extinguishing chamber, the section of the extension part is rectangular.
According to the porcelain shell structure for improving insulation of the vacuum arc-extinguishing chamber, the section of the extension part is bent in an L shape.
The ceramic shell structure for improving the insulation of the vacuum arc-extinguishing chamber is characterized in that the section of the extension part is corrugated.
The porcelain shell structure for improving the insulation of the vacuum arc-extinguishing chamber takes the end face of the porcelain shell as a starting point, and the height of the extension part is 3-10 mm higher than that of the sealing ring.
The porcelain shell structure for improving the insulation of the vacuum arc-extinguishing chamber takes the end face of the porcelain shell as a starting point, and the height of the extension part is 5-8 mm higher than the height of the sealing ring.
The ceramic shell structure for improving the insulation of the vacuum arc-extinguishing chamber has the thickness of 3-5 mm.
Due to the adoption of the technical scheme, the utility model has the advantages that: on the premise of ensuring the welding of products, an extension part is arranged on the basis of a conventional porcelain shell structure, and the extension part is made of ceramics; the main function of the extension part is to insulate and shield the welding part of the sealing ring and the porcelain shell, and increase the creepage distance of the porcelain shell at the position, thereby improving the insulation strength between the vacuum arc extinguishing chamber and the tank body (or other containers) and avoiding the insulation failure problems such as arc discharge breakdown and the like. By designing the extension portion to be rectangular, L-shaped bent, corrugated, and the like, the insulation effect can be further improved.
Drawings
FIG. 1 is a block diagram of a prior art porcelain shell and sealing ring;
FIG. 2 is a block diagram of an extension of the present utility model having a rectangular shape;
FIG. 3 is a view showing the structure of the extension part of the present utility model with L-shaped bending;
fig. 4 is a structural view showing the configuration of the extension portion of the present utility model in a corrugated shape.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be further described in detail with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 2, the porcelain shell structure for improving insulation of a vacuum arc-extinguishing chamber comprises a porcelain shell 1, wherein the end surface of the porcelain shell 1 is connected with a sealing ring 3 through a welding transition ring 2, and the porcelain shell 1 outside the sealing ring 3 is provided with an extension part 4.
The extension 4 is rectangular in cross-section.
The end face of the porcelain shell 1 is used as a starting point, the height of the extension part 4 is 3-10 mm higher than that of the sealing ring, and the insulation effect is good.
The thickness of the extension part 4 is 3-5 mm, so that the strength of the extension part is improved.
Example 2
As shown in fig. 3, the porcelain shell structure for improving insulation of a vacuum arc-extinguishing chamber comprises a porcelain shell 1, wherein the end surface of the porcelain shell 1 is connected with a sealing ring 3 through a welding transition ring 2, and the porcelain shell 1 outside the sealing ring 3 is provided with an extension part 4.
The extension portion 4 has an L-shaped bend in cross section, and can further improve the insulation effect.
The end face of the porcelain shell 1 is used as a starting point, and the height of the extension part 4 is 5-8 mm higher than that of the sealing ring.
The extension 4 has a thickness of 4 mm.
Example 3
As shown in fig. 4, the porcelain shell structure for improving insulation of a vacuum arc-extinguishing chamber comprises a porcelain shell 1, wherein the end surface of the porcelain shell 1 is connected with a sealing ring 3 through a welding transition ring 2, and the porcelain shell 1 outside the sealing ring 3 is provided with an extension part 4.
The cross section of the extension portion 4 is corrugated, and the insulation effect can be further improved.
The height of the extension part 4 is 7 mm higher than that of the sealing ring by taking the end face of the porcelain shell 1 as a starting point.
The thickness of the extension 4 is 3 mm.
Claims (7)
1. The utility model provides an improve insulating porcelain shell structure of vacuum interrupter, includes porcelain shell (1), its characterized in that: the end face of the porcelain shell (1) is connected with the sealing ring (3) through the welding transition ring (2), and the porcelain shell (1) outside the sealing ring (3) is provided with an extension part (4).
2. The porcelain shell structure for improving insulation of a vacuum arc extinguishing chamber according to claim 1, wherein: the cross section of the extension part (4) is rectangular.
3. The porcelain shell structure for improving insulation of a vacuum arc extinguishing chamber according to claim 1, wherein: the section of the extension part (4) is L-shaped bent.
4. The porcelain shell structure for improving insulation of a vacuum arc extinguishing chamber according to claim 1, wherein: the cross section of the extension part (4) is corrugated.
5. The porcelain shell structure for improving insulation of a vacuum arc extinguishing chamber according to claim 1, wherein: the end face of the porcelain shell (1) is used as a starting point, and the height of the extension part (4) is 3-10 mm higher than that of the sealing ring (3).
6. The porcelain shell structure for improving insulation of a vacuum arc extinguishing chamber according to claim 5, wherein: the end face of the porcelain shell (1) is used as a starting point, and the height of the extension part (4) is 5-8 mm higher than that of the sealing ring (3).
7. The porcelain shell structure for improving insulation of a vacuum arc extinguishing chamber according to claim 1, wherein: the thickness of the extension (4) is 3-5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321689461.5U CN220155431U (en) | 2023-06-30 | 2023-06-30 | Porcelain shell structure for improving insulation of vacuum arc extinguishing chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321689461.5U CN220155431U (en) | 2023-06-30 | 2023-06-30 | Porcelain shell structure for improving insulation of vacuum arc extinguishing chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220155431U true CN220155431U (en) | 2023-12-08 |
Family
ID=89013561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321689461.5U Active CN220155431U (en) | 2023-06-30 | 2023-06-30 | Porcelain shell structure for improving insulation of vacuum arc extinguishing chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220155431U (en) |
-
2023
- 2023-06-30 CN CN202321689461.5U patent/CN220155431U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |