Strut compound insulator for 126kV outdoor high-voltage alternating current isolating switch

Abstract

The invention relates to a strut compound insulator for a 126kV outdoor high-voltage alternating current isolating switch in the electric switch industry. The strut compound insulator comprises an upper-end connecting piece, a core rod, an umbrella body, a jacket and a lower-end connecting piece, wherein the upper-end connecting piece is adhered and fixed at the upper end of the core rod; the umbrella body with an integral structure is adhered and fixed outside the core rod; the core rod is a rod body which is formed by pulling and extruding epoxy glass fiber reinforced resin; the umbrella body is a whole body which is formed by vacuum injecting high-temperature vulcanizing silicone rubber; the lower-end connecting piece is adhered and fixed at the lower end of the core rod; the jacket connected with the umbrella body is adhered and fixed on the lower-end connecting piece; since the lower-end connecting piece is a heightened fixed seat body, the stability and the verticality of the core rod and the umbrella body are improved and the reliability of the on / off of the isolating switch can be ensured; since the jacket is arranged, the requirement for the isolating distance can be met; and the core rod is the rod body which is formed by pulling and extruding epoxy glass fibers and the umbrella body is made of the high-temperature vulcanizing silicone rubber, thereby reducing the weight and improving the toughness and the earthquake resistance.

Description

technical field [0001] The invention relates to a pillar composite insulator used in the electric power industry, in particular to a pillar composite insulator for a 126KV outdoor high-voltage AC isolating switch. Background technique [0002] After retrieving relevant patent documents, no post composite insulator for 126KV outdoor high-voltage AC isolating switch with the same structure as the present invention has been retrieved. Existing insulators for isolating switchgear are mainly divided into two categories: porcelain insulators made of porcelain materials and composite insulators with porcelain cores. Porcelain insulators are heavy in weight, low in pollution resistance, poor in shock resistance, complicated in firing process, and low in yield of large porcelain bottles, which brings certain difficulties to product application. Tilting and other phenomena bring safety hazards to the normal operation of power transmission and transformation, so it is necessary to imp...

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Problems solved by technology

Porcelain insulators are heavy in weight, low in pollution resistance, poor in shock resistance, complicated in firing process, and low in yield of large porcelain bottles, which brings certain difficulties to product application. Tilting and other phenomena bring safety hazards to the normal operation of power transmission and transformation, so it is necessary to improve the existing outdoor high-voltage AC isolating switch insulators to better meet the actual needs of production

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