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Cyclone type nozzle high-pressure blowing circuit breakers with blades

A cyclone type, circuit breaker technology, applied in the field of circuit breakers, can solve the problems that are not conducive to greatly improve the resistance to electric field breakdown between contacts and the difficulty of arc blowing, achieve simple structure, convenient implementation, and improve breaking capacity. Effect

Inactive Publication Date: 2008-04-16
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If you want to continue to increase the breaking capacity of the circuit breaker, the traditional arc blowing method will have great difficulties, which is not conducive to greatly improving the resistance to electric field breakdown between contacts

Method used

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  • Cyclone type nozzle high-pressure blowing circuit breakers with blades

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Embodiment Construction

[0011] The structure and working principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0012] It can be seen from the drawings that the pressure cylinder 2 is formed by the moving main contact 3 and the connecting piece, the moving arc contact 4 and the connecting piece and the piston 1, and the moving main contact 3 and the connecting piece, the moving arc contact 4 and the connecting piece are mechanically fixed , and linked together, the nozzle 7 is fixed on the moving main contact 3 and moves together with it, when the nozzle 7 moves to the left together with the moving main contact 3 and the moving arc contact 4, the moving arc contact 4 and the static arc The contact 6, the moving main contact 3 and the static main contact 5 are gradually separated, and the gas in the cylinder is pressed and moves in the direction of the arrow in the figure to blow the arc generated between the moving arc contact 4 and the st...

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Abstract

The invention discloses an air-swirl type spout high-voltage gas-blast circuit breaker with vanes, relating to the electrical switch field. The invention comprises a piston, an air cylinder, movable main contacts, movable arc contacts, stationary main contacts, stationary arc contacts and a spout; vanes are evenly arranged at the circumference of the inner wall of the upper part of the spout at which the spout and the movable arc contacts are formed into an air channel, so an air swirl area is formed. The axial movement of the air flow passing through the upper part of the spout is automatically converted into rotary movement, so the arc-extinguishing ability and the breaking capacity of the gas-blast circuit breaker are enhanced.

Description

technical field [0001] The invention relates to a circuit breaker, in particular to a circuit breaker in which blades are added on the wall surface of a gas channel upstream of a nozzle to cause the arc blowing gas to automatically generate rotational movement. Background technique [0002] High-voltage circuit breakers mainly include oil circuit breakers and air-blown circuit breakers. Oil circuit breakers tend to be eliminated, and air-blown circuit breakers are divided into compressed air circuit breakers and self-powered circuit breakers according to the gas generation method. When the air blowing circuit breaker breaks the line, on the one hand, the contacts connected by the circuit breaker are separated, and at the same time, the high-pressure gas generated by the cylinder is required to extinguish the arc generated between the dynamic and static contacts, and improve the electric field resistance between the dynamic and static contacts. Breakdown ability to achieve th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/88H01H33/91
Inventor 曹云东刘晓明侯春光王尔智李静
Owner SHENYANG POLYTECHNIC UNIV
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