Composite sleeve penetrating through cabinet

Abstract

The invention discloses a composite sleeve penetrating through a cabinet. The composite sleeve comprises a power bus pipe composed of an electric conduction copper bar core, wherein the electric conduction copper bar core is at least wrapped by a composite silicone rubber layer, a flange plate is arranged in the middle of the power bus pipe, the power bus pipe is divided into a first power bus pipe section and a second power bus pipe section through the flange plate, and umbrella skirts are arranged on the outer surface, located on the first power bus pipe section, of the composite silicone rubber layer. The composite sleeve has the advantages of being long in creepage distance, capable of resisting oxidation, high in pollution resistant capacity and convenient to install, and the service life of the high-voltage switch cabinet can be effectively prolonged.

Description

technical field [0001] The invention relates to a bushing through which a live conductor passes through or is introduced into a wall or a metal shell of electrical equipment, and in particular relates to a composite bushing used in a high-voltage switch cabinet. Background technique [0002] Most of the bushings used in the existing high-voltage switchgear are epoxy resin high-voltage bushings. Although the insulation performance of this bushing can meet the requirements, it can only be used for the copper bar between the high-voltage switchgear and the switchgear. Cabinet installation, and the copper bars can only be installed horizontally or vertically during installation, and cannot be adjusted at any angle; at the same time, when the copper bars of the high-voltage switch cabinet need to be connected to the outside of the cabinet, if the switch cabinet epoxy resin high-voltage bushing is used, Due to the small creepage ratio of the existing epoxy resin high-voltage bushi...

AI Technical Summary

Problems solved by technology

[0002] Most of the bushings used in the existing high-voltage switchgear are epoxy resin high-voltage bushings. Although the insulation performance of this bushing can meet the requirements, it can only be used for the copper bar between the high-voltage switchgear and the switchgear. Cabinet installation, and the copper bars can only be installed horizontally or vertically during installation, and cannot be adjusted at any angle; at the same time, when the copper bars of the high-voltage switch cabinet need to be connected to the outside of the cabinet, if the switch cabinet epoxy resin high-voltage bushing is used, Due to the small creepage ratio of the existing epoxy resin high-voltage bushings and the large amount of dust outside the switchgear, the pollution resistance and anti-fouling flashover performance of the epoxy resin high-voltage bushings cannot meet the technical requirements, causing pollution flashover problems , leading to failure of switchgear equipment, and epoxy resin high-voltage bushings are easily oxidized in high-temperature and dirty environments, resulting in short service life of existing cabinet bushings

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