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Arc extinguish chamber structure for lifting arc voltage

A technology of arc voltage and arc extinguishing chamber, which is applied in high-voltage air circuit breakers, high-voltage/high-current switches, circuits, etc., can solve the problems of insignificant step changes and low amplitude of arc voltage, so as to improve breaking capacity, Improve the effect of arc voltage amplitude and jump

Active Publication Date: 2010-12-08
XIAN HIGH VOLTAGE APP RES INST CO LTD
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AI Technical Summary

Problems solved by technology

[0002] At present, in the high-voltage switch, the discharge volume of the air flow channel in the arc extinguishing chamber of most circuit breakers is proportional to the stroke and speed of the movement, and the arc voltage shows a steady-state change trend, and the arc voltage amplitude is low, and the step change not obvious

Method used

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  • Arc extinguish chamber structure for lifting arc voltage

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Embodiment Construction

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

[0012] See figure 1 , The present invention includes a static arc contact 10 and a static main contact 1 arranged on the periphery of the static arc contact 10, the static arc contact 10 and the static main contact 1 are fixed ends, and the static arc contact 10 A lower support base 6 is provided on the opposite side. The lower support base 6 is fixed with a cylinder 5 and a piston 7 of a vent hole 11. The cylinder 5 is fitted with a movable main contact 4 that can move along the cylinder 5, and the piston 7 is fitted inside A tie rod 8 with a hollow structure that can move along the piston 7 and is provided with a tie rod hole 12 and an elongated hole 13. The movable main contact 4 and the tie rod 8 are connected by a connecting seat 3, and an inner hole is installed at the front end of the tie rod 8 to have an ...

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Abstract

The invention relates to the field of manufacturing and design of high-voltage switches and discloses an arc extinguish chamber structure for lifting an arc voltage. The structure comprises a fixed piston and a pull rod moving in an inner hole of the piston; a relative position of an air current channel is designed to realize staged blocking and opening; and simultaneously the structure has an extended moving arc contact surface, so that the variation range of an arc length is enlarged. The structure can increase the amplitude and jump of the arc voltage and fulfills the aim of enhancing the breaking direct current, the volume and the sensitive small-current breaking capacity of a circuit breaker.

Description

Technical field [0001] The invention relates to the field of high-voltage switch manufacturing and design, in particular to an arc extinguishing chamber structure for increasing arc voltage. Background technique [0002] At present, in most high-voltage switches, the discharge volume of the air flow channel in the arc extinguishing chamber of the circuit breaker is proportional to the stroke and speed of the movement. The arc voltage shows a steady-state change trend, and the arc voltage amplitude is low, with a step change Not obvious. Summary of the invention [0003] The purpose of the present invention is to provide an arc extinguishing chamber structure that can increase the arc voltage amplitude and jump of the circuit breaker during the breaking process, thereby improving the breaking capacity of the circuit breaker for breaking DC current, capacitive and inductive low current. [0004] In order to achieve the above-mentioned objective, the technical solution adopted by the ...

Claims

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Application Information

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IPC IPC(8): H01H33/91
Inventor 高文张文兵焦秋忠彭磊
Owner XIAN HIGH VOLTAGE APP RES INST CO LTD
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