Lightning-proof, explosion-proof and disconnection-proof insulators

Abstract

The invention relates to the technical field of electric power equipment, and particularly relates to a lightning-proof explosion-proof and anti-disconnection insulator comprising an umbrella body, an upper fitting and a lower fitting. A sealing cavity is formed between the internal walls of the upper fitting and the lower fitting. An insulating cylinder is embedded in the sealing cavity. The top part in the insulating cylinder is provided with a porcelain tube. The two ends of the porcelain tube are respectively provided with an upper discharge sheet and a lower discharge sheet. The middle part in the insulating cylinder is provided with an internal electrode which is provided with two screw holes, and hollow connectors are connected with the screw holes in a screwing way. The connectors comprise a first connector and a second connector. The first connector is fixedly connected with a fixed discharge pole. The second connector is connected with a flexible discharge pole. The beneficial effects of the lightning-proof explosion-proof and anti-disconnection insulator reside in that the lightning-proof explosion-proof and anti-disconnection insulator is provided, and the insulator has an obvious fault prompting function without the risk of falling; and an airflow channel is unobstructed in pressure release, the insulating cylinder is relatively high in strength, pressure intensity control of pressure release is accurate, and thus the insulator is safer and more reliable than existing insulators.

Description

technical field [0001] The invention relates to the technical field of electric equipment, in particular to insulators used in power transmission lines, power distribution circuits and substations in power systems, in particular to a lightning-proof, explosion-proof and disconnection-proof insulator. Background technique [0002] The existing power transmission and distribution circuits all use insulated wires, which solve the safety problems of the bare wires such as the current corridor, but in actual use, the overvoltage disconnection caused by lightning strikes and other reasons causes the entire power transmission and distribution line to be damaged. Operational failures occur from time to time, especially in southern China, where lightning and thunder are frequent, and the grid failures caused by this have accounted for 36.8% of the entire line failure, of which the lightning strike disconnection rate accounts for 96.8%, which greatly affects The normal power supply of...

AI Technical Summary

Problems solved by technology

But it still has obvious defects: the arc strike ring will fall due to the lack of additional fixation after being punched open, which poses a safety hazard to passing pedestrians and vehicles; its pressure release hole is a non-through hole opened on the outer wall of the insulating cylinder. Its pressure threshold is inconvenient to control, and the structure of the entire airflow channel is complex, and the efficiency of gas conduction is low. When the pressure is too high, it is easy to cause the overall damage of the insulating cylinder

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