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High-voltage circuit-breaker

A high-voltage circuit breaker and transmission mechanism technology, applied in high-voltage air circuit breakers, high-voltage/high-current switches, circuits, etc., can solve the problems of complex sealing process, combustion and explosion, and strong corrosion of vacuum circuit breakers

Inactive Publication Date: 2008-06-11
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the sealing process of vacuum circuit breakers is relatively complicated; oil-rich circuit breakers and oil-less circuit breakers use flammable mineral oil, which may cause combustion and explosion hazards; SF6 gas-insulated circuit breakers use SF6 as the arc-extinguishing medium, but The global warming coefficient GWP of SF6 gas is CO 2 23900 times of that, and the decomposed decomposition products (HF and SF4, SO 2 、SOF 2 、SOF 4 , SO 2 f 4 etc.) are highly toxic or highly corrosive

Method used

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] One of the specific implementations of the present invention is a fluorocarbon liquid-insulated high-voltage circuit breaker. Taking a 35kV high-voltage circuit breaker as an example, its appearance structure is the same as that of a traditional 35kV high-voltage oil-less circuit breaker, such as figure 1 As shown, the operating mechanism 10 is connected to the transmission mechanism 30 through the pull rod 1, the transmission mechanism 30 is connected to the movable contact 60 through the pull rod 2 40, the oil tank 50 is connected to the bracket 100, and the arc extinguishing chamber 60 is arranged in the oil tank 50, and the arc extinguishing chamber 60 has a moving contact 60 and a static contact 80, and is filled with fluorocarbon liquid 90, the top of the oil tank 50 is connected with the capacitor bushing 110, and the top of the ar...

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Abstract

The invention relates to a high-voltage breaker. The invention comprises two high-voltage breakers, wherein one is a liquid insulating or gas-liquid two phase insulating high-voltage breaker by using fluorocarbon liquid (or gas-liquid two phase mixture) to replace the fluorocarbon liquid of transformer oil. The other is a gas insulating or gas-liquid two phase insulating high-voltage breaker by using fluorocarbon gas ((or gas-liquid two phase mixture) to replace fluorocarbon gas of SF6 gas. The invention places the fluorocarbon in an arch eliminating chamber of the high-voltage breaker. During the breaking process of the high-voltage breaker, the invention realizes good safety, good reliability, no bursting, no explosion, environment-friendly by using fluorocarbon to absorb energy generated by the electric arch.

Description

technical field [0001] The invention relates to a high-voltage circuit breaker, in particular to a fluorocarbon insulated high-voltage circuit breaker. Background technique [0002] At present, high-voltage circuit breakers include vacuum circuit breakers, oil-rich circuit breakers, oil-less circuit breakers, and SF6 gas-insulated circuit breakers. Among them, the sealing process of vacuum circuit breakers is relatively complicated; oil-rich circuit breakers and oil-less circuit breakers use flammable mineral oil, which may cause combustion and explosion hazards; SF6 gas-insulated circuit breakers use SF6 as the arc-extinguishing medium, but The global warming coefficient GWP of SF6 gas is CO 2 23900 times of that, and the decomposed decomposition products (HF and SF4, SO 2 、SOF 2 、SOF 4 , SO 2 f 4 etc.) are highly toxic or highly corrosive. The present invention aims at the shortcomings of the above-mentioned various circuit breakers, and proposes a fluorocarbon insu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/91H01H33/22
Inventor 郭卉张国强顾国彪
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI