High-pressure vacuum circuit breaker

A vacuum circuit breaker, high-voltage technology, applied in high-voltage air circuit breakers, high-voltage/high-current switches, circuits, etc., can solve the problems of poor arc extinguishing ability, difficult sealing, low technical parameters, etc., and achieve long service life and maintenance. Small volume, safe and reliable operation

Inactive Publication Date: 2006-10-18
瓦房店高压开关有限公司
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  • Description
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AI Technical Summary

Problems solved by technology

The arc extinguishing medium of the arc extinguishing unit is transformer oil, which is blown by oil gas or cold oil. The arc extinguishing ability is poor, and it is easy to leak oil and pollute the environment.
The frame is to connect the three phases, and the hydraulic mechanism in the control box operates the three-phase linkage to realize the opening and closing operation of the circuit breaker. The hydraulic mechanism generally has an oil pressure between 24Mpa and 30Mpa, which is relatively high and difficult to seal. , the phenomenon of oil leakage is serious, polluting the environment, and the switch needs to be overhauled every year, the cost is high, the electrical life is generally 6-8 times, the mechanical life is 2000 times, and its technical parameters are low

Method used

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Examples

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Embodiment Construction

[0022] Such as figure 1 In the high-voltage vacuum circuit breaker shown, the arc extinguishing unit 1 is equipped with an upper connection flange and a lower connection flange, the frame 2 is fixedly installed on the bracket 5, and the three-phase arc extinguishing unit is fixedly installed on the frame. The arc extinguishing unit is as follows: figure 2 As shown, all the movable parts are mechanically connected to the spring operating mechanism in the control box 3, the wires and cables are put into the cable tube 4, and the arc extinguishing unit is a vacuum tube 8 installed in the arc extinguishing chamber 7, and the vacuum tube consists of an insulating cylinder, dynamic and static Composed of cover plate and bellows, the vacuum degree is ≤10 -5 Pa, the two ends of the vacuum tube are respectively equipped with a static end conductive clip 6 and a moving end conductive clip 9, and the moving and static contacts are placed in the vacuum tube and installed on the static en...

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Abstract

The present invention relates to a high-voltage vacuum circuit-breaker. It is composed of upper wiring flange, lower wiring flange, arc extinguishing unit, frame, supporting frame and control box. The frame is fixedly mounted on the supporting frame, the three-phase arc extinguishing unit is fixedly mounted on the frame, all the movable components of said arc extinguishing unit are mechanically connected on the spring mechanism in the control box, the arc extinguishing unit is characterized by that in its arc extinguishing chamber a vacuum tube is mounted, and its movable contact and static contact are mounted in the vacuum tube.

Description

Technical field: [0001] The invention relates to the field of high-voltage switches in the electromechanical industry, in particular to circuit breakers. Background technique: [0002] At present, there are generally two types of circuit breakers, one is the oil-less circuit breaker: it is generally composed of an arc extinguishing unit, a frame, a control box, and outriggers. The arc extinguishing medium of the arc extinguishing unit is transformer oil, which is blown by oil gas or cold oil. The arc extinguishing ability is poor, and it is easy to leak oil and pollute the environment. The frame is to connect the three phases, and the hydraulic mechanism in the control box operates the three-phase linkage to realize the opening and closing operation of the circuit breaker. The hydraulic mechanism generally has an oil pressure between 24Mpa and 30Mpa, which is relatively high and difficult to seal. , the phenomenon of oil leakage is serious, polluting the environment, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/664H01H33/666
Inventor 吕传平曲道平陈远传杜平孙茂鹏刘莉闫立娟贾喜懂李波
Owner 瓦房店高压开关有限公司
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