A switch cabinet moving and static contact isolation baffle safety lock and control method

Abstract

The invention provides a safety lock and a control method for the isolation baffle of the movable and static contacts of the switch cabinet. The safety lock includes a first electromagnet, a locking ring, a supporting frame for the locking ring and a hanging nose; The compartment, the circuit breaker handcart, the isolation baffle, the upper valve and the lower valve; the locking ring support frame includes a hollow outer frame and the middle beam, and the locking ring runs through the middle beam; the locking ring support frame is arranged at the lower part of the upper valve, and Perpendicular to the upper valve; the hanging nose is set on the upper part of the lower valve corresponding to the locking ring support frame, and the shape and size of the hanging nose and the hollow outer frame of the locking ring support frame are the same; the first electromagnet is set on the hanging nose of the lower valve The lower position, and the first electromagnet is perpendicular to the lower valve; there is a slide rail at the bottom of the handcart room of the circuit breaker, and the handcart of the circuit breaker slides along the slide rail; the first travel switch is arranged on the slide rail; the first travel switch is connected with A controller, the controller is also connected with the first electromagnet; the locking ring is made of ferrous material.

Description

technical field [0001] The invention belongs to the field of switchgear safety, and in particular relates to a safety lock and a control method for a dynamic and static contact isolation baffle of a switchgear. Background technique [0002] In recent years, the State Grid Corporation of China has caused many personal accidents due to the operation and maintenance of the switchgear. For example, if the current transformer CT is replaced for a switch cabinet of a substation, the secondary wiring of the current transformer CT of the switch cabinet is inside the cable room. The valve of the static contact isolating baffle has no protection, and the transmission connecting rod of the valve of the isolating baffle is in the lower part of the handcart room. The maintenance personnel are easy to mislead and open the valve, exposing the dynamic and static contacts. [0003] This is the deficiency of the prior art. Therefore, aiming at the above-mentioned defects in the prior art, it...

AI Technical Summary

Problems solved by technology

[0002] In recent years, the State Grid Corporation of China has caused many personal accidents due to the operation and maintenance of the switchgear.

For example, if the current transformer CT is replaced for a switch cabinet of a substation, the secondary wiring of the current transformer CT of the switch cabinet is inside the cable room. The valve of the isolation baffle of the static contact has no protection, and the transmission link of the valve of the isolation baffle is in the lower part of the handcart room. The maintenance personnel are easy to mislead and open the valve, so that the dynamic and static contacts are exposed.

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