Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Arc extinguish chamber and circuit breaker

An arc extinguishing chamber and arc extinguishing technology, which is applied to high-voltage air circuit breakers, circuits, electrical components, etc., can solve problems such as insufficient arc extinguishing gas pressure, limited closing and breaking performance, etc., to improve breaking performance, Withstand transient recovery voltage and good arc extinguishing effect

Pending Publication Date: 2022-02-18
STATE GRID CORP OF CHINA +2
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an arc extinguishing chamber to solve the problem of insufficient arc extinguishing gas pressure in the later stage of opening of the existing arc extinguishing chamber; another purpose of the present invention is to provide a circuit breaker to solve the problem of the existing circuit breaker The problem of limited closing and breaking performance due to insufficient arc extinguishing gas pressure in the late stage of the arc extinguishing chamber opening

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Arc extinguish chamber and circuit breaker
  • Arc extinguish chamber and circuit breaker
  • Arc extinguish chamber and circuit breaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] Such as figure 1 As shown, the circuit breaker includes an arc extinguishing chamber 10 and an operating mechanism 40, and the operating mechanism 40 is used to drive the arc extinguishing chamber 10 to close and open. The operating mechanism 40 can adopt the operating mechanism in the prior art, and the specific principle will not be described in detail here.

[0087] The arc extinguishing chamber 10 includes a housing 11, which is used to form a closed air chamber for filling the arc extinguishing gas; the front end of the housing 11 is provided with a static end assembly, which includes a static main contact 21 and a static arc The contact 22 , the static main contact 21 and the static arc contact 22 are fixed on the static end contact seat 23 . The rear end of the housing 11 is provided with a movable end assembly, which includes a pneumatic cylinder 31 , a movable main contact 32 , a movable arc contact 33 and a nozzle 34 . The rear end of the housing 11 is fixed...

Embodiment 2

[0093] Such as image 3 and Figure 4 As shown, the difference between this embodiment and Embodiment 1 is that in this embodiment, a gas check valve 50 is provided at the orifice of the communication hole 314 located at one end of the compression chamber 36, and the gas check valve 50 includes a guide The column 51 , the valve plate 52 and the return spring 53 are used to realize one-way communication from the air supply chamber 313 to the air compression chamber 36 . The gas check valve 50 can prevent the gas in the compression cylinder 31 from being poured back into the gas supply cylinder 38 due to the spring in the cylinder 38 being too soft during the opening process, which is beneficial to reduce the design requirements for the stiffness coefficient of the buffer spring 310 .

[0094] When the circuit breaker is working, the pre-opening gas supply chamber 313 and the compression chamber 36 are isolated from each other under the action of the gas check valve 50. After t...

Embodiment 3

[0096] Such as Figure 5 and Figure 6 As shown, the difference between this embodiment and Embodiment 2 is that in this embodiment, the static arc contact 22 is guided along the front and rear directions; a double The dynamic linkage structure and the double-action linkage structure make the arc extinguishing chamber 10 form a double-acting arc extinguishing chamber 10, which is used to drive the static arc contact 22 to move when the moving end assembly moves. The double-action linkage structure adopts the form of connecting rod transmission, including a linkage rod 60. One end of the linkage rod 60 close to the moving end assembly is hinged on the nozzle 34 of the moving end assembly, and the other end is hinged on the middle connecting rod 62; the middle connecting rod 62 The middle part is hinged on the housing 11, and the driven rod 63 is hinged between the end away from the linkage rod 60 and the static arc contact 22. When the nozzle 34 moves forward, the static arc ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an arc extinguish chamber and a circuit breaker. The circuit breaker comprises an operating mechanism and an arc extinguish chamber, the arc extinguish chamber comprises a shell, a moving end assembly and a static end assembly, the moving end assembly comprises an air cylinder, a moving main contact and a moving arc contact, and the static end assembly comprises a static main contact and a static arc contact; an air supplementing cylinder is arranged on the air cylinder, an air supplementing piston is assembled in the air supplementing cylinder in a guiding manner, and an air supplementing chamber is formed between the air supplementing piston and the air supplementing cylinder; a communicating channel is arranged between the air supplementing chamber and the air compressing chamber; a buffer spring is arranged behind the air supply piston, and a spring seat is arranged at the rear end of the buffer spring; the air supplementing piston is provided with a front limit position and a rear limit position in the moving stroke, the front limit position is determined by the buffer spring which freely extends, and the rear limit position is determined by the corresponding piston limiting piece or the buffer spring which is in the compression limit; the moving stroke of the air supplementing piston is smaller than that of the air cylinder. According to the scheme, the problem that the arc extinguishing gas pressure of an existing arc extinguishing chamber is insufficient in the later opening stage is solved.

Description

technical field [0001] The invention relates to an arc extinguishing chamber and a circuit breaker. Background technique [0002] Sulfur hexafluoride (SF 6 ) is a high greenhouse effect gas with a GWP value of 23900, which is extremely unfriendly to the atmospheric environment. However, high-voltage circuit breakers above 126kV generally use sulfur hexafluoride as the insulating arc-extinguishing medium, because sulfur hexafluoride gas is a very stable, harmless and non-combustible inert gas, which has high electrical insulation capacity And discharge extinguishing ability (arc extinguishing ability). However, as a greenhouse gas, reducing its use has always been a common goal in the high-voltage switch industry. [0003] Carbon dioxide gas (CO 2 ), nitrogen (N 2 ) or halogenated hydrocarbon insulating gas with no GWP value or low GWP green arc extinguishing insulating gas. The structure of the arc extinguishing chamber of these high voltage switches is inherited from t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01H33/74H01H33/88
CPCH01H33/74H01H33/88
Inventor 张豪林麟姚永其王向克王之军刘亚培杜洋陆静郝相羽张博谢丽丹杜迎乾李禹生杨心刚苏磊
Owner STATE GRID CORP OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com