Bar-shaped suspension type porcelain insulator

Abstract

The invention discloses a bar-shaped suspension type porcelain insulator which comprises a bar-shaped solid porcelain body and metal caps sleeved at two ends of the solid porcelain body. Six layers of umbrella edges are arranged at equal intervals in the middle of the solid porcelain body; the diameters of the umbrella edges at two ends are equal and smaller than those of the other four layers of umbrella edges; and a pair of ears is extended outwards in radial direction from each external end of the two metal caps. The bar-shaped suspension type porcelain insulator can avoid bridging of rain or ice bars among the umbrella edges, has good self cleaning performance, achieves creep distance as long as 350 mm, thereby improving antifouling and anti-lightning performance; in addition, the solid porcelain body adopts high-strength flitch, thereby effectively improving mechanical tension fracture strength, achieving rated mechanical tension strength of 45kN; since the metal caps are sleeved at binding structures outside two ends of the solid porcelain body, the possibility of the generation of zero value caused by insulation can be avoided; and the lightning impulse withstand voltage of the bar-shaped suspension type porcelain insulator is 140kV, which is very important for thunder prevention and safe operation of lines.

Description

technical field [0001] The invention relates to a high-voltage insulator string element, in particular to a rod-shaped suspension porcelain insulator. Background technique [0002] Insulators are important components in high-voltage power transmission and transformation equipment. They are mainly used in high-voltage power transmission and transformation lines for insulation, mechanical connection and support. Our country has a vast territory, and the geographical and climate conditions vary greatly. Many places are lightning-prone areas, causing zero value and flashover problems of suspension insulators, which seriously affect the safe operation of the power system, and the external insulation pollution of power transmission and transformation equipment caused by air pollution Lightning has caused serious damage to the power system. The insulators used on the transmission line are divided into two categories according to the structural form, namely the disc suspension type...

AI Technical Summary

Problems solved by technology

However, in the prior art high-voltage line rod-shaped suspension porcelain insulator structure, there are only three layers of umbrella ribs on the insulating magnet, so there is a defect of short insulation distance (only 300mm), and the surface of the insulator is prone to flashing in the thunderstorm season and when the atmospheric environment is seriously polluted. network phenomenon

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