Relay protection-based pressing plate device

Abstract

The invention relates to the technical field of power equipment, and discloses a relay protection-based pressing plate device, which comprises a device main body, a connecting valve, a platform, a joint, a knife switch, a resetting device, a positioning device and a retreating device. According to the relay protection-based pressing plate device, the rotary valve is rotated to enable the sliding column to drive the clamping block, the pointer observes that the clamping block is separated from the positioning groove, the rotary valve is lifted to drive the sliding column to be separated from the inflection point of the sliding rail, the locking state of the torsional spring is relieved, the torsional spring loses a positioning object and starts to reset, and the knife switch is driven to be disconnected, and thebeneficial effect that direct contact with the knife switch is not needed when disconnecting contact is achieved. The bottoms of the sliding columns make contact with the sliding rails, the clamping blocks are inserted into the positioning grooves when the sliding columns enter, the clamping blocks are positioned through the positioning grooves, the sliding columns connected with the tail ends of the clamping blocks are synchronously positioned, the sliding columns continuously move on the inner sides of the sliding rails, and after the knife switch makes contact with the connector at the other end, the sliding column is clamped into the corner of the L-shaped sliding rail to form locking, so that the beneficial effect of no looseness after the knife switch is closed is achieved.

Description

technical field [0001] The invention relates to the technical field of electric power equipment, in particular to a pressing plate device based on relay protection. Background technique [0002] The protection pressure plate is also called the protection connection piece, or the trip pressure plate, which is the bridge and link for the protection device to connect with the external wiring, and it is related to whether the protection function and the action outlet can work normally. The pressure plate is a disconnection point visible to the naked eye, which is convenient for operators to judge the trip circuit of the relay protection device and whether the trip coil of the switch (circuit breaker) can be connected, which provides great convenience for maintenance and operation, but also makes the substation In the protection system of the system, a disconnection point that cannot be completely closed loop is added. Due to the particularity of the relay protection tripping pr...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a pressing plate device based on relay protection, which does not need to directly contact the switch knife when the contact is broken, and will not loosen after closing the switch knife, and the connection of the switch knife will not be embrittled The advantages of preventing accidents, etc., solve the problems of the above technologies

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