Double acting self energy thermal expansion type high pressure sulfur hexafluoride breaker arc extinguish chamber

Abstract

The invention discloses a double acting self energy thermal expansion type high pressure sulfur hexafluoride breaker arc extinguish chamber, comprising a breaker shell and a static contact mechanism, a moving contact mechanism, a cylinder and an operating mechanism which are fixed in the breaker shell in a sealing way, wherein the operating mechanism drives the moving contact mechanism to move; the static contact mechanism comprises a static main contact and a static arc contact, the moving contact mechanism comprises an arc extinguishing port, a moving main contact and a moving arc contact; the static contact mechanism also comprises a rotating shifting fork driving the static arc contact to move up and down and a guide rail for the static arc contact to move up and down; the moving contact mechanism also comprises a push-and-pull rod which is arranged above the arc extinguishing port and can move up and down along with the moving contact mechanism to correspondingly drive the shifting fork to rotate. The invention has novel and reasonable structure design, all components are compactly connected, and use operation is convenient and use effect is good, thus the actual problems that stroke of the moving contact is large and the required operation power is also high during opening and closing operations in use of the existing self energy type breaker arc extinguish chamber can be effectively solved.

Description

technical field [0001] The invention belongs to the technical field of high-voltage switchgear, and in particular relates to a double-acting self-energy thermal expansion type high-voltage sulfur hexafluoride circuit breaker arc extinguishing chamber. Background technique [0002] In recent years, with the continuous and in-depth research on high-voltage arcs, people have invented self-energy thermal expansion high-voltage sulfur hexafluoride circuit breakers on the basis of single-pressure gas-type SF6 circuit breakers. Because it utilizes the energy of the arc itself, the operating work is greatly reduced, which is a big step forward in technology. However, whether it is a single-pressure or self-energy circuit breaker, generally only the moving contact moves, and the static contact end is fixed, so the stroke of the moving contact is still relatively large during the opening and closing operation, and the required operating work Also larger. Contents of the invention ...

AI Technical Summary

Problems solved by technology

However, whether it is a single-pressure or self-energy circuit breaker, generally only the moving contact moves, and the static contact end is fixed, so the stroke of the moving contact is still relatively large during the opening and closing operation, and the required operating work also bigger

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