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Single-acting arc extinguish chamber and static end contact structure thereof

A moving arc contact and arc extinguishing chamber technology, which is applied to electrical components, electrical switches, circuits, etc., to improve the opening efficiency, increase the insulation distance, and reduce the probability of heavy breakdown.

Pending Publication Date: 2022-04-15
PINGGAO GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a static end contact structure of a single-acting arc extinguishing chamber to solve the problem of the need to balance the arcing effect of the static arc contact and the impact on the electric field caused by the fixed assembly of the static main contact and the static arc contact in the prior art. technical issues affecting

Method used

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  • Single-acting arc extinguish chamber and static end contact structure thereof
  • Single-acting arc extinguish chamber and static end contact structure thereof
  • Single-acting arc extinguish chamber and static end contact structure thereof

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specific Embodiment 1

[0059] like Figure 1 to Figure 3 As shown, the structure of the arc extinguishing chamber provided in this embodiment is basically the same as that of the existing compressed gas type arc extinguishing chamber. Here, the structure of the movable end contact and the static end contact inside the arc extinguishing chamber are mainly introduced.

[0060] For the convenience of expression, the front and rear directions here define the linear action direction of the moving end contact structure when the opening and closing operation is performed. The rear movement communicates with the static end contact structure for closing operation, and the moving end contact structure moves forward to separate from the static end contact structure for opening operation.

[0061] The structure of the moving end contact mainly includes the nozzle 4, the auxiliary nozzle 5, the moving main contact 6, the moving arc contact 7, the pressure cylinder 8, the pull rod 9, and the moving conductive sup...

specific Embodiment 2

[0075] It differs from Embodiment 1 mainly in that in Embodiment 1, the front end of the static arc contact at the closing limit position is flush with the front end of the static shield. In this embodiment, the front end of the static arc contact at the closing limit position is located in the static shield.

[0076] Of course, in other embodiments, the front end of the static arcing contact can also protrude from the static shield according to actual needs, for example, in the case of high voltage levels. It should be noted that even if the front end of the static arcing contact protrudes from the static shielding cover, at the same voltage level, compared with the relatively fixed arrangement of the static arcing contact and the static main contact, the present invention provides, The motion assembly method of the static arc contact can also effectively reduce the forward protrusion of the static arc contact, thereby also optimizing the electric field between the fractures....

specific Embodiment 3

[0078] The main difference between it and Embodiment 1 is: in Embodiment 1, the stopper is an adjustable nut, which can be continuously adjusted along the front and rear directions. In this embodiment, the stopper is a stopper sleeve, and positioning holes are arranged on the stopper sleeve, and a plurality of through holes are arranged at intervals along the front and back direction on the static arc contact, and the rear stopper is adjusted according to actual needs. The position of the sleeve is fixed, and then the positioning pin is inserted, so that the stop sleeve can be positioned and arranged at the corresponding position, which belongs to a step-by-step adjustment.

[0079] Of course, the stopper and the static arc contact can also be directly welded and fixedly assembled together.

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Abstract

The invention relates to a single-action arc extinguish chamber and a static end contact structure thereof, the static end contact structure comprises a static conductive support, a static arc contact and a static main contact, and the static arc contact is assembled on the static conductive support in a reciprocating motion along the opening and closing direction and has a closing limit position and an opening limit position; the static conductive support is also provided with a reset elastic member which applies an elastic acting force to the static arc contact to force the static arc contact to move towards a closing limit position. The reciprocating motion stroke of the static arc contact comprises an opening stroke and a reset stroke, and the static arc contact in the opening stroke moves forwards from the closing limit position to the opening limit position so as to meet the opening arc striking requirement of the arc extinguish chamber. The movable arrangement mode of the static arc contact effectively gives consideration to the influence of the static arc contact on an electric field on the basis of ensuring the effective arc striking effect of the arc contact, increases the insulation distance between fractures in a voltage recovery stage, and reduces the re-breakdown probability.

Description

technical field [0001] The invention belongs to the technical field of electric switch breaking arc extinguishing, and in particular relates to a single-acting arc extinguishing chamber and its static end contact structure. Background technique [0002] In the field of electric switch breaking and arc extinguishing, the circuit breaking is controlled by separating the static end contact and the moving end contact in the arc extinguishing chamber. In order to protect the main contacts, arcing contacts are usually configured, such as the arc extinguishing chamber disclosed in the Chinese invention patent application with the application publication number of CN112908771A. The static end part and the moving end part are arranged inside, and the static end part includes a fixed assembly. The static main contact and the static arc contact, the moving end part includes the moving arc contact, the moving main contact, the nozzle and the pressure cylinder and other structures. Amon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H9/38
Inventor 钟建英王文博金玉琪徐华段晓辉魏建巍张弛孙珂珂杨珂韩峰王鹏超朱秋楠殷东洋吕昊刘龙周忠杰刘煜张利欣熊萍萍
Owner PINGGAO GRP
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