Contact of vacuum interrupter, vacuum interrupter and vacuum circuit breaker

Abstract

The invention relates to a vacuum interrupter contact, a vacuum interrupter and a vacuum circuit breaker. The vacuum interrupter contact includes: a conductive rod on which a contact seat with a hollow cavity is arranged; a contact piece fixed on The end surface of the contact seat; the support body is arranged between the bottom of the contact seat and the contact sheet, and is used to support the contact sheet; the support body includes a support body body, and in the extending direction of the conductive rod, the support body At least one of the two ends of the main body is provided with an insulating layer, which can prevent the current flowing through the conductive rod from flowing through the support body, and compared with the current part of the current flowing through the support body in the prior art, it increases the contact strength. The circular current on the head improves the magnetic field generated by the circular current on the contacts, thereby enhancing the arc extinguishing capability of the vacuum interrupter and solving the problem that the contacts of the vacuum interrupter are easily ablated in the prior art.

Description

technical field [0001] The invention relates to the field of high-voltage electrical appliances, in particular to a vacuum interrupter contact, a vacuum interrupter and a vacuum circuit breaker. Background technique [0002] The vacuum interrupter is the core component of the vacuum switch, and it is responsible for cutting off the arc. The control and extinguishment of the arc is closely related to the control of the magnetic field by the contacts of the vacuum interrupter. The current magnetic field control technologies mainly include longitudinal magnetic structure and transverse magnetic structure. Magnetic structure, in which the longitudinal magnetic structure generates a circular current through the design of the contact structure, and then generates a longitudinal magnetic field parallel to the arc current, which makes the vacuum arc more uniform, reduces the accumulation of the vacuum arc, and reduces the burning of the arc on the contact surface Eclipse, with stron...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a vacuum interrupter contact to solve the problem that the vacuum interrupter contact is easily ablated in the prior art; the present invention is also to provide a vacuum interrupter to solve the current There is a problem that vacuum interrupters are not conducive to breaking large currents in the prior art; the purpose of the present invention is to provide a vacuum circuit breaker to solve the problem that vacuum circuit breakers in the prior art are not conducive to breaking large currents

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