Blocking method of switch knife state detector

Abstract

The invention provides a knife switch state detection blocking method which comprises a step of fixing two knife switch state detectors to the upper surface of a knife switch structure box, a step of installing a blocking device on a knife switch rotation shaft above the knife switch structure box such that the blocking device rotates with the rotation of the knife switch rotation shaft, wherein when one knife switch state detector is blocked by the blocking device, when the knife switch rotation shaft rotates to one side rotation limit position, one knife switch state detector is blocked, and when the knife switch rotation shaft rotates to the other side rotation limit position, the other knife switch state detector is blocked by the blocking device. The method is simple to operate, since the knife switch state detectors are fixedly installed to the upper surface of a knife switch structure box, the dislocation and movement of the knife switch state detectors are avoided, the blocking accuracy is improved, even a blocking failure appears, an operator can distinguish the two knife switch state detectors with the help of memory, the judgment ability of the operator is improved, the blocking device of the invention is fixed to the knife switch rotation shaft, the installation is stable and reliable, and the possibility of bending and looseness is little.

Description

technical field [0001] The invention relates to the field of five-proof locking of substations, in particular to a shielding method for a switch blade state detector. Background technique [0002] In the switching operation of the substation, it is necessary to use a five-prevention locking program to realize a kind of protection for equipment and personal and prevent misoperation. When operating the switch knife, insert the special five-proof key into the mechanical lock of the switch knife operation box door, and open the box door to operate the switch knife. The rotation of the switch knife is driven by the motor in the mechanism box to drive the transmission link of the switch knife shaft to realize the opening and closing of the switch knife. Therefore, when the switch knife moves from opening to closing or from closing to opening, the rotating shaft of the knife knife rotates at a corresponding angle, and the opening and closing of the knife knife The rotating shaft i...

AI Technical Summary

Problems solved by technology

[0005] The strip plate 4 used in the above-mentioned shielding method has only one supporting edge, so its stability is poor, and it is easy to rust, bend and loose under long-term outdoor wind and rain, resulting in the exposed detectors that have been shielded, affecting operational safety , and the strip plate 4 is fixed on the edge of the knife mechanism box 2, which will cause inconvenience to the normal operation of the maintenance personnel; in addition, the two knife state detectors 3 are prone to misalignment and movement, resulting in the position of the strip plate 4. Does not correspond, affecting occlusion accuracy

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