Mistaken-opening-preventing and locking device and method for switch cabinet isolation baffles

Abstract

The invention relates to a mistaken-opening-preventing and locking device and method for switch cabinet isolation baffles. According to the technical scheme, the device comprises a cabinet body, and the cabinet body is provided with the two isolation baffles; the two isolation baffles are provided with a first fixing sheet and a second fixing sheet respectively, the first fixing sheet and the second fixing sheet are connected through two locking sheets, the first fixing sheet and the second fixing sheet both form an L-shaped structure through two face plates, and the first fixing sheet and the second fixing sheet are each provided with a first through hole and a second through hole; each locking sheet is of a rectangular structure and is provided with three through holes, two through holes in each locking sheet serve as mounting holes, and one through hole in each locking sheet serves as a lock hole; the first fixing sheet and the second fixing sheet are connected with the locking sheets respectively, the two locking sheets are connected through the lock hole, and the lock hole is locked through an electromagnetic lock. The mistaken-opening-preventing and locking device and method for the switch cabinet isolation baffles have the advantages that the fixing sheets and the locking sheets are simple in structure, cost is low and mounting is convenient.

Description

technical field [0001] The invention relates to a protection device for an isolation baffle of a switch cabinet, in particular to an anti-mis-opening locking device and method for an isolation baffle of a switch cabinet. Background technique [0002] For the 10~35kV handcart switchgear (including the central cabinet) in operation, when the travel switch, transmission connecting rod, sensor, dehumidifier and other components in the handcart space in the cabinet need to be overhauled, the isolation baffle is required to be reliably closed to ensure Prevent personnel from accidentally opening the isolation baffle and touching live parts, but the current situation is not optimistic, as follows: [0003] 1. There are safety regulations but the devices that implement the regulations are not comprehensive. In recent years, several cases of personal injury accidents have involved the provisions of 4.5.4 of the "Electricity Safety Work Regulations": "After the handcart switch in the ...

AI Technical Summary

Problems solved by technology

[0003] 1. There are safety regulations but the devices that implement the regulations are not comprehensive. In recent years, several cases of personal injury accidents have involved the provisions of 4.5.4 of the "Electricity Safety Work Regulations": "After the handcart switch in the high-voltage switch cabinet is pulled out, the shielding of the live parts is isolated. After the board is closed, it is forbidden to open, and a signboard of "Stop, high voltage is dangerous!" is set up. The regulations have played a role in guiding, educating and prohibiting, but due to the lack of implementation, the implementation of the specific device, the signboard failed to effectively prevent violations;

[0004] 2. There is a loophole in the anti-mis-entry function of the static contact of the handcart switch cabinet: After field investigation and data review, it is found that the switch cabinet currently in production and operation

An isolation baffle that can shield the static contact with electricity is installed, but no locking device is designed and installed. When the switch handcart is pulled out, the linkage mechanism of the isolation baffle is directly exposed in the cabinet space, and one person can open it casually. Device defects exist in both domestic and foreign products;

[0005] 3. The anti-mis-entry measures at the maintenance site are completely dependent on the safety awareness of employees and the supervision of the person in charge of the work. The current anti-mis-entry measures are: after the handcart switch in the maintenance state is pulled out, lock the isolation baffle of the switch cabinet. This measure Solved the problem of preventing mistaken entry during "handcart switch maintenance", but when the travel switch, transmission link, sensor, dehumidifier and other components in the handcart compartment need to be repaired, the locked isolation baffle must be opened to prevent mistakes If the entry device is forced to be released, we can only set up the "stop, high voltage danger!" sign, and strengthen safety monitoring, focus on safety disclosure, and appoint a dedicated guardian when necessary. Once the guardian and maintenance personnel are negligent, danger may occur

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