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Nozzle connection structure, arc extinguish chamber using the same and breaker using the same

A connection structure and interrupter technology, applied in the direction of circuits, electrical components, electric switches, etc., can solve problems such as difficulty in ensuring the sealing performance of nozzles and moving contacts, nozzle damage, etc., to avoid assembly internal stress, improve reliability, Effect of Compensating Part Tolerances

Active Publication Date: 2016-09-28
PINGGAO GRP +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the nozzle is directly screwed on the moving contact, it is difficult to ensure the sealing performance between the nozzle and the moving contact, and the nozzle may be damaged when the vibration is too large

Method used

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  • Nozzle connection structure, arc extinguish chamber using the same and breaker using the same
  • Nozzle connection structure, arc extinguish chamber using the same and breaker using the same

Examples

Experimental program
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Embodiment Construction

[0020] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0021] The specific embodiment of spout connection structure of the present invention, as Figure 1 to Figure 2 As shown, the spout connection structure includes the spout 1 and the movable contact 2 arranged front and back, and the guide ring 3 set on the outside of the spout 1. The guide ring 3 is provided with a stepped hole with a small front and a large rear. There is a convex ring 11 protruding outward, and the convex ring 11 is clamped in the stepped hole by the guide ring 3 and the moving contact 2 . The stepped hole is a three-stage stepped hole, including a small-diameter section, a middle-diameter section 31 and a large-diameter section 32 from front to back. The protruding ring 11 cooperates with the stop of the middle diameter section 31, and the front end surface of the protruding ring 11 stops and cooperates with the step surface between ...

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Abstract

The invention relates to the high voltage electrical equipment control field and discloses a nozzle connection structure, an arc extinguish chamber using the same and a breaker using the same. The nozzle connection structure comprises a nozzle and a moving contact which are respectively arranged in front and at the back; the outer side of the nozzle is sleeved by a flow guiding ring which is internally provided with a stepped hole with the front end being small and rear end being big; the rear side of the nozzle is provided with a protruded ring which protrudes outwardly; and the protruded ring is clamped in the stepped hole of the flow guide ring by a flow guide ring and the moving contact. In the nozzle connection structure, the arc extinguish chamber and the breaker, the protruded ring of the nozzle is clamped in the stepped hole of the flow guide ring by the flow guide ring and the moving contact, and a breaker nozzle is fixed on the moving contact by virtue of the flow guiding ring. Compared with the traditional direct bolt joint, the nozzle connection structure has reliable connection, reduces the possibility of looseness of the nozzle and prevents foreign matters produced by nozzle wearing.

Description

technical field [0001] The invention relates to the field of high-voltage electrical equipment control, in particular to a spout connection structure, an arc extinguishing chamber and a circuit breaker using the structure. Background technique [0002] In the circuit breaker arc extinguishing chamber, the spout is usually assembled directly on the moving contact through a threaded connection. During use, the threaded connection is prone to loosening or even falling off. This connection method has low reliability. In the process of thread tightening, foreign matter will also be produced after the nozzle is worn. In addition, the spout is directly screwed on the moving contact, so it is difficult to ensure the sealing performance between the spout and the moving contact, and excessive vibration may cause damage to the spout. Contents of the invention [0003] The object of the present invention is to provide a spout connection structure that reduces the possibility of spout...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H9/30
CPCH01H9/302
Inventor 江经华孙英杰魏建巍贺晶晶段晓辉李永林孙清超李俊峰王赛豪王之军
Owner PINGGAO GRP
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