Crimping dual-umbrella or three-umbrella disc-shaped suspension composite insulator string component

Abstract

The invention discloses a crimping type double-umbrella-shaped and triple-umbrella-shaped disk-shaped suspension composite insulator string element, which includes a mandrel, fittings arranged at both ends of the mandrel, and a sheath covering the outer side of the mandrel; wherein the The sheath is provided with a double umbrella-shaped or triple umbrella-shaped umbrella skirt extending along the circumference of the sheath; wherein the metal fittings are crimped on the mandrel, and the sealing structure is cured and molded on the outer surface of the fittings at high temperature . The invention has the functions of preventing bird damage, resisting wind and sand, resisting damage by external force and assisting climbing.

Description

technical field [0001] The invention relates to a composite insulator, in particular to a crimping double-umbrella and triple-umbrella disk-shaped suspension composite insulator string element. Background technique [0002] Polymer composite insulators are favored by the industry because of their great advantages over porcelain and glass insulators in terms of weight, zero measurement value, pollution flashover voltage resistance, and no self-explosion, especially the high pollution flashover voltage. The study found that there is a certain relationship between the shed structure of the insulator and the pollution flashover voltage, so that the composite insulators with the same other conditions but different shed structures have different pollution flashover voltages. [0003] The influence of the umbrella diameter on the pollution flashover characteristics of the composite insulator is as follows: the increase of the umbrella diameter increases the equivalent diameter of t...

AI Technical Summary

Problems solved by technology

If the umbrella spacing is reduced, the creepage distance of the composite insulator can be increased when the insulation height is constant, but the pollution flashover voltage does not increase linearly with the increase of the creepage distance. Bell-shaped products, bridging between umbrellas is prone to occur, and the utilization rate of creepage distance is relatively reduced

[0005] Composite insulators operate in a wide geographical range, and different regions have their own geographical particularities, resulting in complex operating conditions. At the same time, there are external uncertainties in the transportation, installation and maintenance of composite insulators, which affect the safe operation of composite insulators

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