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Self-energy arc extinguish chamber

An arc extinguishing chamber and self-energy technology, applied in high-voltage/high-current switches, high-voltage air circuit breakers, electrical components, etc., can solve the problems of insufficient gas pressure and speed, to make up for the lack of gas pressure and speed, and improve arc extinguishing ability, the effect of increasing gas pressure

Pending Publication Date: 2022-08-05
XIAN XD SWITCHGEAR ELECTIC CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of this, the object of the present invention is to provide a self-energy arc extinguishing chamber to compensate for the insufficient gas pressure and velocity caused by gas leakage from the static contact, so as to improve the arc extinguishing ability of the self-energy arc extinguishing chamber

Method used

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Embodiment Construction

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] like figure 1 and figure 2 As shown, the embodiment of the present invention discloses a self-energizing arc extinguishing chamber, which includes a static contact 105, a moving contact 104, a first support 101, a second support 102 and a gas supply device.

[0040] The first support member 101 is used to provide installation foundation for some functional components. For example, the static contact 105 can be disposed on the...

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Abstract

The invention discloses a self-energy arc extinguish chamber, which comprises a static contact and a moving contact, and further comprises a first supporting piece, a second supporting piece and a third supporting piece, the static contact is arranged on the first supporting piece, and the static contact is provided with a first center hole communicated with the outside; the first supporting piece is provided with a first center hole, the second supporting piece is provided with a second center hole, the moving contact is in sliding fit with the second center hole, and a fixed-volume container communicated with the first center hole and the second center hole is formed between the first supporting piece and the second supporting piece; and the gas supplementing device comprises a variable-volume container communicated with the fixed-volume container, so that gas is supplemented into the fixed-volume container by changing the volume of the variable-volume container when the current is cut off. According to the self-energy arc extinguish chamber, the gas supplementing device is arranged, gas molecules can be supplemented into the fixed-volume container in the current on-off process, the problem that gas pressure and speed are insufficient due to the fact that gas leaks from the static contact is solved, and the arc extinguish capacity of the self-energy arc extinguish chamber is improved.

Description

technical field [0001] The invention relates to the technical field of circuit breakers, in particular to a self-energy arc extinguishing chamber. Background technique [0002] The high-voltage circuit breaker (or high-voltage switch) can not only cut off or close the no-load current and load current in the high-voltage circuit, but also cut off the overload current and short-circuit current through the action of the relay protection device when the system fails. Perfect arc extinguishing structure and sufficient breaking current capacity. [0003] The self-energy arc extinguishing chamber is the most commonly used arc extinguishing structure for circuit breakers, which mainly uses the energy of the arc itself to extinguish the arc. The self-energy arc extinguishing chamber in the prior art includes a moving contact, a static contact, a front arc contact, a rear arc contact, an expansion chamber and a valve body. Move back and forth. [0004] When in the closed state, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/91H01H33/22
CPCH01H33/91H01H33/22
Inventor 吕军玲盖斐严旭康永林马占峰蔡熹路媛婧
Owner XIAN XD SWITCHGEAR ELECTIC CO LTD
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