Arc extinguish chamber contact piece emergency processing device of vacuum contactor

Abstract

The invention relates to the technical field of vacuum contactors and discloses an arc extinguishing chamber contact piece emergency processing device of a vacuum contactor. The device comprises a fixed plate, an electromagnetic coil is fixedly mounted at the bottom of one side of the fixed plate, and a positioning sliding rod is fixedly mounted at the top of one side of the fixed plate. Accordingto the invention, a channel is formed in the static contact; therefore, the emergency power connection contact can be sleeved in the static contact. Therefore, when emergency treatment is needed, only an insulating bolt needs to be rotated to push the emergency power connection contact to press down; the bottom end of the emergency power connection contact breaks through insulating rubber; the insulating rubber is extruded at a position between the emergency power connection contact and the static contact, and an insulating function is achieved; meanwhile, the bottom end of the emergency power connection contact makes contact with a moving contact, current is connected, and the other end of the emergency power connection contact makes contact with a power connection ring to complete a current path, so that sufficient time is provided for workers for maintenance, and the safety of the device is improved.

Description

technical field [0001] The invention relates to the technical field of vacuum contactors, in particular to an emergency treatment device for a contact sheet of an arc extinguishing chamber of a vacuum contactor. Background technique [0002] The outer shell of the vacuum interrupter is made of glass or ceramic insulating material, and the internal vacuum degree is usually above 0.01Pa. Because there is less air in the shell, the distance between the contacts can be made very small, and the arc is easily extinguished. The head material is generally made of alloys such as copper, antimony, and osmium. The function of the shield in the arc extinguishing chamber is to condense the metal vapor diffused from the gap between the contacts when the current is broken, which is helpful for arc extinguishing and prevents the metal vapor from Splashing on the insulating shell reduces its insulation strength. The moving contact is connected to the lower end of the shell with a bellows. Th...

AI Technical Summary

Problems solved by technology

[0002] The outer shell of the vacuum interrupter is made of glass or ceramic insulating material, and the internal vacuum degree is usually above 0.01Pa. Because there is less air in the shell, the distance between the contacts can be made very small, and the arc is easily extinguished. The head material is generally made of alloys such as copper, antimony, and osmium. The function of the shield in the arc extinguishing chamber is to condense the metal vapor diffused from the gap between the contacts when the current is broken, which is helpful for arc extinguishing and prevents the metal vapor from Splashing on the insulating shell reduces its insulation strength. The moving contact is connected to the lower end of the shell with a bellows. The moving contact can move up and down without air leakage. However, the existing device has a big problem that it cannot be judged by the appearance. Whether it is damaged will affect the replacement of the device, because once it is damaged, the device will no longer have the functions it has, and the current cannot be connected, and the damage must be found during use, and once it is found, it needs to be replaced. The speed is slow, which affects the use of other devices and even brings safety hazards. Therefore, an emergency treatment device for the contact piece of the arc extinguishing chamber of the vacuum contactor is proposed.

Images