Post type transparent insulator for high-voltage line

Abstract

The invention discloses a post type transparent insulator for a high-voltage line. The post type transparent insulator comprises a pressing plate, a flat-top petticoat, a flat-top petticoat central cylinder, big petticoats, a small petticoat, a connecting rod, a metal sleeve, and a bearing bolt which are connected in sequence. According to the transparent insulator provided by the invention, the relatively large flat-top petticoat, the flat-top petticoat central cylinder, the big petticoats and the small petticoat are manufactured by polycarbonate; the connecting rod is made from epoxy resin, so that the insulating effect is greatly improved and the transparent performance is good; the fracture or breakdown failure accidents can be repaired in time, so that the safety operation of the line can be ensured; the set pressing plate is mounted in a clamping manner, so that less workload, relatively high efficiency and low labor intensity are achieved; due to wire slot transverse shallow slots and wire pressing slots or wire convex pressing strip shallow slots, an electric wire wearing phenomenon tends not to happen; the electric wire is fixed reliably, and the waste problem caused by replacement of an aluminum binding wire is prevented; and in addition, the insulator is reasonable in structure, light in weight, safe and reliable in performance, easy to manufacture, relatively low in fabrication cost, easy to mount, and capable of bringing relatively high economic benefit and social benefit.

Description

technical field [0001] The invention belongs to the technical field of power transmission accessories, and relates to an insulator for a power line, specifically a post-type transparent insulator for a high-voltage line. Background technique [0002] At present, many countries in the world use polymer composite materials and FRP composite materials to develop insulators. The main scheme proposed is: the composite insulator is composed of the umbrella plate of polymer material, the rod core of composite material and the metal accessories after bonding, but the problems that need to be solved are: (1) umbrella plate: it is the insulator’s External insulation, because the polymer synthetic material is not resistant to high temperature, and the umbrella plate is under the atmospheric conditions and voltage for a long time, so it must have good weather aging resistance, resistance to leakage traces and electrical corrosion damage, and have a certain The elasticity is suitable fo...

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Problems solved by technology

The main scheme proposed is: the composite insulator is composed of the umbrella plate of polymer material, the rod core of composite material and the metal accessories after bonding, but the problems that need to be solved are: (1) umbrella plate: it is the insulator’s External insulation, because the polymer synthetic material is not resistant to high temperature, and the umbrella plate is under the atmospheric conditions and voltage for a long time, so it must have good weather aging resistance, resistance to leakage traces and electrical corrosion damage, and have a certain Elasticity to adapt to the elastic shape of the insulator under mechanical load, and easy processing, etc.

(2) Rod core: It is mainly a part that bears mechanical loads. It is generally made of composite epoxy glass fiber rods. Its tensile strength is 3-4 times higher than that of porcelain, but its performance will decrease after being damp.

The main fixing method of the wire fixed by the post insulator is generally the binding wire winding method. The binding wire winding method is not only complicated in binding, but also has low installation efficiency. There are also some problems in the structure: such as the binding material of aluminum stranded wire and aluminum stranded The same as the wire material, the wire is affected by weather conditions such as wind, ice, and low temperature all the year round, and strong vibrations often occur, causing the contact parts to wear out, and then the wire breaks; The outer skin ages and falls off under the wind and the sun, and becomes loose, making the fixation unstable. The exposed iron wire cuts the outer layer of the wire insulation and breaks the outer insulation, and further cuts the wire

The replacement of aluminum binding wires is invalid and cannot be reused. A large number of aluminum binding wires must be replaced every year. The workload is heavy and the labor intensity of the workers is high. When the porcelain insulator breaks, it is not easy to find, and the wires are not fixed firmly, which poses a safety hazard.

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