Lightning protection insulator used for 10KV insulated wire

Abstract

The invention discloses a lightning protection insulator used for a 10KV insulated wire, which includes a wiring terminal, a cylindrical insulated body fixedly connected with the wiring terminal, a first silicon rubber umbrella cover coating the cylindrical side surface of the insulated body, a cylindrical nonlinear component, an arc strike ring sleeved on the upper end of the nonlinear component, a second silicon rubber umbrella cover and a metal cap, wherein the upper end of the nonlinear component is hermetically connected with the insulated body; the part, below the arc strike ring, of the cylindrical side surface of the nonlinear component is coated by the second silicon rubber umbrella cover; and the lower end of the nonlinear component is matched with the second silicon rubber umbrella cover through the metal cap for sealing. The lightning protection insulator is simple in structure and low in cost, supports and fixes the 10KV insulated wire, and meanwhile protects the 10KV insulated wire from being damaged by lightning.

Description

technical field [0001] The invention relates to an insulator, in particular to a lightning protection insulator for 10KV insulated wires. Background technique [0002] At present, the overhead lines of 10KV distribution networks in domestic cities mostly use insulated wires for safety reasons, and generally do not have overhead ground wires, so the probability of being struck by lightning is relatively high. In order to solve this problem, the following methods are mostly adopted at home and abroad: [0003] 1) Grooming method, the insulated wire near the insulator is partially bare, so that the arc root of the power frequency arc is transferred or fixed on the special metal tool for burning, so as to protect the wire from being burned. [0004] 2) The blocking method is to prevent the power frequency freewheeling from arcing after a lightning flashover. For example, Japan uses a large number of current-limiting arc suppression angles, that is, metal oxide arresters with s...

AI Technical Summary

Problems solved by technology

For example, after using the dredging method and the arc strike gap, the power frequency freewheeling flow cannot be cut off instantly, and high temperature can still cause local damage to insulators and other line accessories

In addition, after the arrester is installed, a line accessory is added to the line, and the cost of the arrester is much higher than that of the insulator, which undoubtedly increases the cost of the line

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