An emergency treatment device for the arc extinguishing chamber contact piece of a vacuum contactor

Abstract

The invention relates to the technical field of vacuum contactors, and discloses an emergency treatment device for an arc-extinguishing chamber contact piece of a vacuum contactor, comprising a fixing plate, an electromagnetic coil is fixedly installed at the bottom of one side of the fixing plate, and one side of the fixing plate is A positioning slide bar is fixedly installed on the top of the . In the present invention, a channel is opened in the interior of the static contact, so that the emergency contact electric contact can be sleeved in it, so that when emergency treatment is required, it is only necessary to rotate the insulating bolt to push the emergency contact electric contact down, so that the emergency contact electric contact can be pressed down. The bottom end of the contact breaks through the insulating rubber, and the insulating rubber is squeezed between the emergency contact electrical contact and the static contact to play an insulating function. At the same time, the bottom end of the emergency contact electrical contact and the moving contact Contact, turn on the current, and use the other end of the emergency contact electric contact to contact the electric contact ring to complete the current path, thereby giving the staff sufficient time for maintenance and improving the safety of the device.

Description

technical field [0001] The invention relates to the technical field of vacuum contactors, in particular to an emergency treatment device for an arc-extinguishing chamber contact piece of a vacuum contactor. Background technique [0002] The outer shell of the vacuum interrupter is made of glass or ceramic insulating materials, and the internal vacuum degree is usually above 0.01Pa. Due to the small amount of air in the shell, the contact distance can be made very small, and the arc can be easily extinguished. The head material is generally made of copper, antimony, osmium and other alloys. The function of the shield in the arc extinguishing chamber is to condense the metal vapor diffused from the contact gap when the current is interrupted, which is helpful for arc extinguishing and can also prevent metal vapor. Splashes on the insulating housing reduce its dielectric strength. The moving contact is connected to the lower end of the housing with a bellows, and the moving con...

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.

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