CN204242937U - 800kV arc-extinguishing chamber of circuit breaker relief valve - Google Patents
800kV arc-extinguishing chamber of circuit breaker relief valve Download PDFInfo
- Publication number
- CN204242937U CN204242937U CN201420663451.9U CN201420663451U CN204242937U CN 204242937 U CN204242937 U CN 204242937U CN 201420663451 U CN201420663451 U CN 201420663451U CN 204242937 U CN204242937 U CN 204242937U
- Authority
- CN
- China
- Prior art keywords
- arc
- circuit breaker
- pressure
- relief valve
- gas
- 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
Links
Abstract
The utility model relates to the arc extinguishing process of 800kV arc-extinguishing chamber of circuit breaker, emerging high-voltage sf6 circuit breaker, mostly adopts mixing arc quenching principle, namely blows with expanding+helping or with+expansion type of calming the anger, do like this and all improve arc extinguishing usefulness and circuit breaker performance.But hypertonia, be then unfavorable for reliably cut-offfing of circuit breaker, by installing relief valve on touch base, according to the pressure automatic open close of system, thus ensure reliably cut-offfing of arc control device.During separating brake, operating mechanism is by connecting rod band moving contact, insulation spout and air cylinder motion, thus the gas in compression air cylinder, the pressure of gas is raised.After contact separates; electric arc is produced between contact; part electric arc also can heated air make the air pressure in cylinder raise further; at this moment spout is not also opened, now, if inner pressure of air cylinder is too high; relief valve then can conducting; discharge a part of gas, reduce pressure, thus guarantee to ensure that circuit breaker effectively cut-offs and parts can be protected from damage.
Description
Technical field
The present invention relates to the arc extinguishing process of 800kV arc-extinguishing chamber of circuit breaker, is a kind of parts that arc control device reliably cut-off that ensure.
Background technology
Current most switchgear is all mechanical type switch contacts, therefore can produce electric arc between contact in interrupting process.Self-energy arc-extinguishing chamber is exactly the energy maximally utilising electric arc self, arc control device are made to set up the necessary pressure of air-blowing blow-out, but along with the increase of drop-out current, pressure in cylinder is also increasing, too high pressure is bad on the contrary to the break performance of arc control device, is also unfavorable for the long-time running of switch.
Along with the raising of electric power system power transmission and transformation line electric pressure, and the continuous lifting of power system capacity, high-voltage electrical equipment insulation property are had higher requirement, good insulation property directly affect the overall operation of equipment and the safety and stablization of electric power system, Interruption performance, as one of important indicator weighing SF6 circuit breaker performance, improves the key issue that breaking capacity of breaker is development high-voltage switch gear.
Summary of the invention
The present invention, in order to overcome above-mentioned shortcoming, touch base has been installed a Spring-Loaded Pressure Relief Valve, thus ensure that the pressure in air cylinder.
The present invention is achieved by the following technical solutions:
Calculate arc control device and cut-off required pressure, then carry out the processing selection of spring according to this pressure, loaded by spring in valve seat, the elastic force by spring makes spool and valve seat positiver sealing.Then the valve body assembled is arranged on touch base by screw thread.
The invention has the beneficial effects as follows:
(1) discharge pressure too high in cylinder, ensure that arc control device can reliably cut-off;
(2) useful life of elongated component;
(3) safe operation of equipment is ensured.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present invention.
In figure, 1 valve body, 2 spools, 3 springs, 4 baffle plates, 5 circlips.
Embodiment
Accompanying drawing is a kind of specific embodiment of the present invention.This invention is high-voltage switch gear arc suppression chamber pressure relief valve, be assemblied in valve body 1 by spool 2, then load in valve body 1 by the spring 3 coating paraffin, baffle plate 4 is installed in bottom, again circlip 5 is put into groove, ensured the sealing of spool 2 and valve body 1 by the active force of spring 3.
Claims (1)
1.800kV arc-extinguishing chamber of circuit breaker relief valve, is characterized in that: spool is assemblied in valve body, then is loaded in valve body by the spring coating paraffin, and baffle plate is installed in bottom, then circlip is put into groove, is ensured the sealing of spool and valve body by the active force of spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420663451.9U CN204242937U (en) | 2014-11-10 | 2014-11-10 | 800kV arc-extinguishing chamber of circuit breaker relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420663451.9U CN204242937U (en) | 2014-11-10 | 2014-11-10 | 800kV arc-extinguishing chamber of circuit breaker relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204242937U true CN204242937U (en) | 2015-04-01 |
Family
ID=52772397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420663451.9U Expired - Fee Related CN204242937U (en) | 2014-11-10 | 2014-11-10 | 800kV arc-extinguishing chamber of circuit breaker relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204242937U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112951646A (en) * | 2021-03-18 | 2021-06-11 | 国网河南省电力公司南阳供电公司 | SF6 circuit breaker |
-
2014
- 2014-11-10 CN CN201420663451.9U patent/CN204242937U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112951646A (en) * | 2021-03-18 | 2021-06-11 | 国网河南省电力公司南阳供电公司 | SF6 circuit breaker |
| CN112951646B (en) * | 2021-03-18 | 2022-09-09 | 国网河南省电力公司南阳供电公司 | SF6 circuit breaker |
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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 |
Granted publication date: 20150401 Termination date: 20151110 |
|
| EXPY | Termination of patent right or utility model |