CN205319081U - Plastics utmost point vacuum interrupter for post - Google Patents
Plastics utmost point vacuum interrupter for post Download PDFInfo
- Publication number
- CN205319081U CN205319081U CN201521089679.2U CN201521089679U CN205319081U CN 205319081 U CN205319081 U CN 205319081U CN 201521089679 U CN201521089679 U CN 201521089679U CN 205319081 U CN205319081 U CN 205319081U
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- CN
- China
- Prior art keywords
- ceramic case
- vacuum interrupter
- metal sealing
- ring
- liner
- 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 - Fee Related
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- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
(B, ) the utility model discloses a (B, ) (b a) plastics utmost point vacuum interrupter for post (b) (b) including ceramic case (3), is in ceramic case (3) vacuum interrupter inner room (2), ceramic case (3) outer be equipped with external insulation layer (1), and the both ends of ceramic case (3) respectively are equipped with a metal sealing -in ring (6), are equipped with in the metal sealing -in ring (6) inside lining beaded finish (5), and the external diameter of inside lining beaded finish (5) is unanimous with the internal diameter of metal sealing -in ring (6). (B, ) (b) the utility model discloses have the structural strength height, compressive capacity is strong, and product quality is good, beneficial effect that the reliability is high. (B, )
Description
Technical field
The utility model relates to a kind of vacuum interrupter, particularly a kind of plastics pole vacuum interrupter.
Background technology
Plastics pole vacuum interrupter and master loop electric-conductor epoxy resin carries out overall sealing injection moulding make whole pole become an integral unit. Current plastics pole is the two ends that first metal sealing boxing is connected on ceramic case, assemble the parts such as contact, by arc extinguishing indoor chamber vacuum, then form external insulation layer at the outer casting epoxy resin of ceramic case, but after welding for china with metal, the resistance to tension of welding place is approximately 1300kg/cm
2
Be equivalent to about 127MPa, and during sealing injection moulding, injection pressure is greater than 100MPa usually, simultaneously, the welding of metal sealing ring and ceramic case is in also to be born thermal mismatch stress when injection moulding is heated, therefore, when sealing injection moulding, welding place of metal sealing ring and ceramic case is easily destroyed and leaks gas, quality product reduce, it may also be useful to time poor reliability.
Summary of the invention
The purpose of this utility model is, it is provided that a kind of plastics pole vacuum interrupter. The utility model has structural strength height, and resistance to compression ability is strong, good product quality, the feature that reliability is high.
The technical solution of the utility model: a kind of plastics pole vacuum interrupter, include ceramic case, it is room in vacuum interrupter in ceramic case, external insulation layer it is provided with outside ceramic case, the two ends of ceramic case are respectively provided with a metal sealing ring, being provided with liner strengthening ring in metal sealing ring, the external diameter of liner strengthening ring is consistent with the internal diameter of metal sealing ring.
Aforesaid plastics pole vacuum interrupter, described liner strengthening ring is absolute construction.
Aforesaid plastics pole vacuum interrupter, described liner strengthening ring and ceramic case are formed in one structure.
Aforesaid plastics pole vacuum interrupter, is provided with buffer layer between described ceramic case and external insulation layer.
The beneficial effects of the utility model: the utility model by arranging liner strengthening ring in metal sealing ring, improve metal sealing ring and the structural strength of ceramic case junction, enhance resistance to compression ability, during injection moulding, metal sealing ring and ceramic case junction are not easily damaged, decrease the damage rate of product, it is to increase quality product, there is good injection moulding reliability. In sum, the utility model has structural strength height, and resistance to compression ability is strong, good product quality, the useful effect that reliability is high.
Empirical tests, the resistance to compression ability of metal sealing ring of the present utility model and ceramic case junction is greater than 300Mpa.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model;
The d district enlarged diagram of accompanying drawing 1 when accompanying drawing 2 is adopt a kind of liner strengthening ring;
The d district enlarged diagram of accompanying drawing 1 when accompanying drawing 3 is adopt another kind of liner strengthening ring.
Description of reference numerals: 1-external insulation layer, room in 2-vacuum interrupter, 3-ceramic case, 4-buffer layer, 5-liner strengthening ring, 6-metal sealing ring.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described, but not as the foundation that the utility model is limited.
Embodiment of the present utility model: a kind of plastics pole vacuum interrupter, as shown in Figure 1, include ceramic case 3, ceramic case 3 is round shape, it is room 2 in vacuum interrupter in ceramic case 3, external insulation layer 1 it is provided with outside ceramic case 3, external insulation layer 1 is obtained by sealing injection moulding epoxy resin, the two ends of ceramic case 3 are provided with metal sealing ring 6, metal sealing ring 6 is made by the metallic substance that the coefficient of expansion of the coefficient of expansion and ceramic case 3 is close, metal sealing ring 6 is connected by welding process with ceramic case 3, liner strengthening ring 5 it is provided with in metal sealing ring 6, liner strengthening ring 5 is ceramic ring, the external diameter of liner strengthening ring 5 is consistent with the internal diameter of metal sealing ring 6.
As shown in Figure 2, described liner strengthening ring 5 is absolute construction, and it is an independent annulus, is arranged on the top of ceramic case 3, the inside of metal sealing ring 6, liner strengthening ring 5 handling ease of this kind of structure.
As shown in Figure 3, described liner strengthening ring 5 and ceramic case 3 are formed in one structure, being that middle diameter is big by being made into by ceramic case 3, obtain after the structure that diameter is little, there is boss at two ends at two ends, liner strengthening ring 5 structural strength of this kind of structure is higher, but makes and comparatively bother.
It is provided with buffer layer 4 between described ceramic case 3 and external insulation layer 1.
During injection moulding, injection pressure inwardly applies from the external vertical of ceramic case 3 with metal sealing ring 6 junction, simultaneously, owing to ceramic case 3 is different with the coefficient of expansion of metal sealing ring 6, and ceramic case 3 and metal sealing ring 6 are in hot environment during injection moulding, there is thermal mismatch stress, make the structure of junction very unstable, easily break under the effect of injection pressure and cause gas leakage in junction, after using liner strengthening ring 5, injection pressure is absorbed after being radially applied on liner strengthening ring 5, the junction avoiding ceramic case 3 and metal sealing ring 6 is destroyed under injection pressure.
Claims (4)
1. a plastics pole vacuum interrupter, it is characterized in that: include ceramic case (3), it is room (2) in vacuum interrupter in ceramic case (3), external insulation layer (1) it is provided with outside ceramic case (3), the two ends of ceramic case (3) are respectively provided with a metal sealing ring (6), being provided with liner strengthening ring (5) in metal sealing ring (6), the external diameter of liner strengthening ring (5) is consistent with the internal diameter of metal sealing ring (6).
2. plastics pole vacuum interrupter according to claim 1, it is characterised in that: described liner strengthening ring (5) is absolute construction.
3. plastics pole vacuum interrupter according to claim 1, it is characterised in that: described liner strengthening ring (5) and ceramic case (3) are formed in one structure.
4. plastics pole vacuum interrupter according to claim 1, it is characterised in that: it is provided with buffer layer (4) between described ceramic case (3) and external insulation layer (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521089679.2U CN205319081U (en) | 2015-12-24 | 2015-12-24 | Plastics utmost point vacuum interrupter for post |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521089679.2U CN205319081U (en) | 2015-12-24 | 2015-12-24 | Plastics utmost point vacuum interrupter for post |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205319081U true CN205319081U (en) | 2016-06-15 |
Family
ID=56198990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521089679.2U Expired - Fee Related CN205319081U (en) | 2015-12-24 | 2015-12-24 | Plastics utmost point vacuum interrupter for post |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205319081U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105405710A (en) * | 2015-12-24 | 2016-03-16 | 中国振华电子集团宇光电工有限公司（国营第七七一厂） | Vacuum arc-extinguishing chamber having relatively high structural strength and used for plastic pole column |
-
2015
- 2015-12-24 CN CN201521089679.2U patent/CN205319081U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105405710A (en) * | 2015-12-24 | 2016-03-16 | 中国振华电子集团宇光电工有限公司（国营第七七一厂） | Vacuum arc-extinguishing chamber having relatively high structural strength and used for plastic pole column |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160615 Termination date: 20201224 |