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Support plate and contact assembly using the support plate, vacuum interrupter

A technology of contact assembly and support plate, which is applied to electrical components, high-voltage air circuit breakers, electric switches, etc., can solve the problems of short electrical life, poor magnetic induction performance, poor structural strength, etc., and achieves no loss of current intensity, induction The effect that the magnetic field strength will not be lost

Active Publication Date: 2018-07-27
TIANJIN PINGGAO INTELLIGENT ELECTRIC +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the structural strength of the transverse magnetic field contact and the generated magnetic induction are contradictory, that is, the longer the path of the slot on the transverse magnetic field contact, the stronger the magnetic induction, but the lower the structural strength of the contact. The electrical life under the short-circuit breaking current will be shorter, so the transverse magnetic field contacts used in the existing vacuum interrupter have the defects of poor magnetic induction performance and poor structural strength

Method used

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  • Support plate and contact assembly using the support plate, vacuum interrupter
  • Support plate and contact assembly using the support plate, vacuum interrupter
  • Support plate and contact assembly using the support plate, vacuum interrupter

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Embodiment Construction

[0021] The embodiment of vacuum interrupter among the present invention: as Figure 1 to Figure 3 As shown, it includes two contact assemblies that are separated and closed axially.

[0022] The structure of the conductive rod 1 and the contact piece 3 is the same as that of the traditional transverse magnetic field contact assembly. The end of the conductive rod 1 is provided with a shaft end thinner than the middle part, and the shaft end is inserted and welded at the center of the disc-shaped contact piece 3, and the end face of the contact piece 3 that is connected to the shaft end of the conductive rod 1 is defined as The back side and the opposite end are the front side, so that the opening and closing of the entire vacuum interrupter can be realized through the relative opening and closing of the two contact assemblies along the axial direction. The outer circumference of the contact piece 3 is provided with four swivel-shaped grooves uniformly distributed in the axial...

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Abstract

The invention discloses a support plate, a contact assembly employing the same and a vacuum arc-extinguishing chamber. The contact assembly comprises a conducting rod and a contact blade, wherein the contact blade is fixed on the tip of the conducting rod; grooves shaped like a Chinese character 'wan' or in a spiral form and split segments located between two adjacent grooves are arranged on the contact blade; the support plate is fixed between the back surface of the contact blade and the conducting rod and comprises a conducting ring which is fixed on the periphery of the conducting rod in a sleeving manner; conducting teeth which are distributed at intervals along the circumferential direction are convexly arranged on the conducting ring; and tooth crests of the conducting teeth are in corresponding conductive contact with the split segments between the grooves of the contact blade respectively; the conducting teeth of the support plate form end surface teeth which are used for conductively supporting the contact blade on the conducting ring; and the center part of the contact blade is directly fixed on the conducting rod; the split segment parts are supported by the conducting teeth, so that the split segment parts are still supported by the conducting teeth of the support plate on the conducting teeth after the grooves in the contact blade are deepened; and the overall structural strength of the overall contact assembly is also ensured.

Description

technical field [0001] The invention relates to a support plate, a contact assembly using the support plate, and a vacuum interrupter. Background technique [0002] At present, there are two types of contact structures for 12kV series vacuum interrupters, one is a transverse magnetic field contact, and the other is a longitudinal magnetic field contact. Among them, the contact sheet of the transverse magnetic field contact is provided with a spiral or swivel-shaped groove, which makes the breaking ability of the transverse magnetic field contact better than that of the longitudinal magnetic field contact, which is beneficial to the miniaturization and cost reduction of the vacuum interrupter. Low, favored by more and more manufacturers. However, the structural strength of the transverse magnetic field contact and the generated magnetic induction are contradictory, that is, the longer the path of the slot on the transverse magnetic field contact, the stronger the magnetic in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H33/664
CPCH01H33/6643
Inventor 李敏舒小平孙淑萍王晓琴李文艺王南南
Owner TIANJIN PINGGAO INTELLIGENT ELECTRIC
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