CN105977093A - Vacuum arc-extinguishing chamber of vacuum circuit breaker - Google Patents
Vacuum arc-extinguishing chamber of vacuum circuit breaker Download PDFInfo
- Publication number
- CN105977093A CN105977093A CN201610420506.7A CN201610420506A CN105977093A CN 105977093 A CN105977093 A CN 105977093A CN 201610420506 A CN201610420506 A CN 201610420506A CN 105977093 A CN105977093 A CN 105977093A
- Authority
- CN
- China
- Prior art keywords
- vacuum
- cover plate
- conductive rod
- circuit breaker
- corrugated pipe
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The invention discloses a vacuum arc-extinguishing chamber of a vacuum circuit breaker. The vacuum arc-extinguishing chamber comprises a movable conductive rod, a movable end cover plate and a corrugated pipe, wherein one end of the corrugated pipe sleeves the movable conductive rod and the other end is fixed on the movable end cover plate; a thermal insulation layer is arranged at the sleeved part of the corrugated pipe and the movable conductive rod; an elastic shielding net is arranged at the lower end of the thermal insulation layer; and the other end of the elastic shielding net is connected with the movable end cover plate. By the structure, the corrugated pipe can be effectively prevented from being burnt out by an electric arc generated when a movable contact is separated from a fixed contact; and heating of the surface of the corrugated pipe can also be isolated, so that the service lifetimes of the corrugated pipe and the vacuum arc-extinguishing chamber are prolonged.
Description
Technical field
The present invention relates to the vacuum interrupter of a kind of vacuum circuit breaker.
Background technology
Vacuum high-pressure chopper is one of most important equipment in power system, mainly includes insulation shell, dynamic and static contact, vacuum interrupter, operating mechanism etc..Because of the advantage that it has that volume is little, lightweight, is applicable to frequent operation, arc extinguishing need not overhaul, its running status directly determines safety and the benefit of power system.Vacuum circuit breaker vacuum in running can progressively decline, vacuum leak to a certain extent time, danger hidden danger will be caused.Wherein corrugated tube is mainly undertaken at vacuum interrupter and is ensured the action within the specific limits of electronic pole and the long-term function keeping arc-chutes inner high voltage vacuum, and ensures that vacuum interrupter has the highest mechanical life.But the electric arc produced during corrugated tube easily passive, stationary contact disjunction burns out；And excessive electric current easily generates heat through moving conductive rod, being delivered to bellows surface by heat effect, corrugated tube is to do stretching motion repeatedly, will affect its fatigue resistance to a certain extent when temperature rises.
Summary of the invention
In view of the deficiencies in the prior art, it is an object of the invention to provide the electric arc produced when the vacuum interrupter of a kind of vacuum circuit breaker can be prevented effectively from dynamic and static contact disjunction and burn out corrugated tube, bellows surface can also be completely cut off be heated, and from improving corrugated tube and the service life of vacuum interrupter.
For achieving the above object, the technical solution used in the present invention is: the vacuum interrupter of a kind of vacuum circuit breaker, and including moving conductive rod, moved end cover plate and corrugated tube, described corrugated tube one end is set in described moving conductive rod, and the other end is fixed on described moved end cover plate；Described corrugated tube and described moving conductive rod socket place are provided with thermal insulation layer, and described thermal insulation layer lower end is provided with elastic gauze screen, and the described elastic gauze screen other end is connected with moved end cover plate.
As preferably, described thermal insulation layer is ceramic layer.Pottery has preferable heat-proof quality, and effectively isolation bellows surface is heated.
As preferably, described elastic gauze screen is graphite nylon material, radially undulate cylinder-like structure.Graphite nylon material arc resistance can be good.
Use such scheme, effectively completely cut off by thermal insulation layer electric current excessive and produce heating cause the heat effect to corrugated tube；Elastic gauze screen surrounds corrugated tube, and when can effectively completely cut off dynamic and static contact disjunction, electric arc is directly got on corrugated tube, is effectively increased the service life of corrugated tube；Elastic gauze screen can move up and down with disconnected conjunction of moving conductive rod, and radially undulate can improve its tired performance of enduring hardships and effectively prevents gauze screen breakage ineffective.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention；
Fig. 2 is the A portion enlarged drawing of Fig. 1.
Detailed description of the invention
As it can be seen, the vacuum interrupter of a kind of vacuum circuit breaker, including insulation shell 4, moving contact 3, static contact 2, moving conductive rod 5, static conductive rod 1, moved end cover plate 9 and corrugated tube 8；Corrugated tube 8 one end is set in moving conductive rod 5, and the other end is fixed on moved end cover plate 9；Dynamic and static contact is respectively provided on dynamic and static conducting rod, and dynamic and static conducting rod is oppositely arranged；Moved end cover plate 9 is connected with insulation shell 4.Corrugated tube 8 and moving conductive rod 5 socket place are provided with ceramic thermal barrier layer 6, and ceramic thermal barrier layer 6 lower end is provided with the cylindric graphite nylon gauze screen 7 of radially undulate, and gauze screen 7 other end is connected with moved end cover plate 9.Ceramic thermal barrier layer 6 can be welded to connect by the moving conductive rod 5 of the welding procedure such as Laser Welding, soldering with metal material.Gauze screen 7 can be connected with thermal insulation layer 6, moved end cover plate 9 by the connected mode such as screw thread or clamping.
Claims (3)
1. a vacuum interrupter for vacuum circuit breaker, including moving conductive rod, moved end cover plate and corrugated tube, described corrugated tube one end is set in described moving conductive rod, and the other end is fixed on described moved end cover plate；It is characterized in that described corrugated tube and described moving conductive rod socket place are provided with thermal insulation layer, described thermal insulation layer lower end is provided with elastic gauze screen, and the described elastic gauze screen other end is connected with moved end cover plate.
The vacuum interrupter of a kind of vacuum circuit breaker the most as claimed in claim 1, it is characterised in that described thermal insulation layer is ceramic layer.
The vacuum interrupter of a kind of vacuum circuit breaker the most as claimed in claim 1, it is characterised in that described elastic gauze screen is graphite nylon material, radially undulate cylinder-like structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610420506.7A CN105977093A (en) | 2016-06-15 | 2016-06-15 | Vacuum arc-extinguishing chamber of vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610420506.7A CN105977093A (en) | 2016-06-15 | 2016-06-15 | Vacuum arc-extinguishing chamber of vacuum circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105977093A true CN105977093A (en) | 2016-09-28 |
Family
ID=57021223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610420506.7A Pending CN105977093A (en) | 2016-06-15 | 2016-06-15 | Vacuum arc-extinguishing chamber of vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105977093A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114709108A (en) * | 2022-04-25 | 2022-07-05 | 国网山东省电力公司德州供电公司 | Vacuum circuit breaker with bellows damage protect function |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203910656U (en) * | 2014-01-14 | 2014-10-29 | 浙江兴田电气有限公司 | Vacuum arc-extinguishing chamber |
| CN203983147U (en) * | 2014-08-18 | 2014-12-03 | 台力电气有限公司 | The vacuum interrupter of vacuum circuit-breaker |
| CN204375643U (en) * | 2015-02-05 | 2015-06-03 | 浙江安光电气科技有限公司 | Vacuum circuit-breaker vacuum interrupter |
| CN204577326U (en) * | 2015-05-23 | 2015-08-19 | 浙江森光电气科技有限公司 | Vacuum interrupter |
| CN204632659U (en) * | 2015-05-23 | 2015-09-09 | 浙江森光电气科技有限公司 | A kind of vacuum interrupter |
-
2016
- 2016-06-15 CN CN201610420506.7A patent/CN105977093A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203910656U (en) * | 2014-01-14 | 2014-10-29 | 浙江兴田电气有限公司 | Vacuum arc-extinguishing chamber |
| CN203983147U (en) * | 2014-08-18 | 2014-12-03 | 台力电气有限公司 | The vacuum interrupter of vacuum circuit-breaker |
| CN204375643U (en) * | 2015-02-05 | 2015-06-03 | 浙江安光电气科技有限公司 | Vacuum circuit-breaker vacuum interrupter |
| CN204577326U (en) * | 2015-05-23 | 2015-08-19 | 浙江森光电气科技有限公司 | Vacuum interrupter |
| CN204632659U (en) * | 2015-05-23 | 2015-09-09 | 浙江森光电气科技有限公司 | A kind of vacuum interrupter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114709108A (en) * | 2022-04-25 | 2022-07-05 | 国网山东省电力公司德州供电公司 | Vacuum circuit breaker with bellows damage protect function |
| CN114709108B (en) * | 2022-04-25 | 2023-08-11 | 国网山东省电力公司德州供电公司 | Vacuum circuit breaker with corrugated pipe damage protection function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160928 |