Wind self-cleaning type composite insulator

Abstract

The invention relates to a wind self-cleaning type composite insulator, which consists of a fitting ball head, a fitting ball socket, a rod core and a composite outer sleeve. The composite insulator is characterized in that the upper surface of an umbrella skirt of the composite insulator is an arc rotary surface, and is provided with a wind cleaning ring (5), and each cleaning ring can clean to the edge of each umbrella skirt of the insulator under a general wind attitude (8), to the most of part of the upper surface of each umbrella skirt under a weak wind attitude (9), to the highest part of the upper surface and the center part of the lower surface of each umbrella skirt under a high wind attitude (10), and to the lower surface (4) of each umbrella skirt under a strong wind attitude (11). Compared with the wind cleaning ring of the existing composite insulator, the composite insulator has the advantages that the wind cleaning area is greatly increased, the anti-pollution flashover capability of the insulator is improved, the aging-resistant performance, the breakdown-resistant performance and the electrical erosion-resistant performance are higher, and the deformation of the umbrella skirts difficultly occurs.

Description

technical field [0001] The invention relates to a composite insulator for a power transmission line, in particular to a composite insulator which utilizes wind force to clean dirt on the surface of the insulator and prevent pollution flashover. Background technique [0002] Composite insulators (also known as silicone rubber composite insulators) have excellent anti-pollution flashover performance and are widely used in power systems; however, due to long-term cleaning, the surface of the insulator will become more and more polluted, and there will still be pollution flashover after a certain period of use Accidents continue to occur; the Chinese patent "Insulator Wind Sweeping Ring" (Notice No. CN1393891, CN300775682, CN300970054, CN301483468S. hereinafter referred to as "Sweeping Ring" or "Wind Sweeping Ring") is used to cover each shed of the composite insulator. Under the action of wind, the cleaning ring rotates or swings on the surface of the shed, sweeping away the di...

AI Technical Summary

Problems solved by technology

[0002] Composite insulators (also known as silicone rubber composite insulators) have excellent anti-pollution flashover performance and are widely used in power systems; however, due to long-term cleaning, the surface of the insulator will become more and more polluted, and there will still be pollution flashover after a certain period of use Accidents continue to occur; the Chinese patent "Insulator Wind Sweeping Ring" (Notice No. CN1393891, CN300775682, CN300970054, CN301483468S. hereinafter referred to as "Sweeping Ring" or "Wind Sweeping Ring") is used to cover each shed of the composite insulator. Under the action of wind, the cleaning ring rotates or swings on the surface of the shed, sweeping away the dirt on the surface of the insulator, which greatly improves the anti-fouling flashover ability of the composite insulator, but the wind cleaning ring can only clean the upper surface of the insulator shed, the insulator The lower surface of the umbrella skirt cannot be cleaned, and there is still a potential pollution flashover

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