Pure dry type fluorosilicon integrated high pressure passing wall bushing

Abstract

This invention relates to real dry wall bushing for wall-crossing and indoor use with 35KV-220KV electric network. It is characterized by that: voltage-sharing covers being placed on two ends of a stainless-steel tube, semiconducting buffer zone being between them, several ring-shaped aluminium thin electrodes being placed along the tube with intervals outside the buffer layer, said intervals, being main insulation layer filled with insulating oil, earth wire being led-out from it, the outer protection layer being fluoro-silicon materials sleeve, flange being fixed on its middle, outer skirts being placed on two sides, earthing-wire and flange being electrically connected; wherein: semiconducting material being fluoro-silicon, insulating oil being fluoro-silicon rubber. This invention resolves prior art products problems, with increased performances.

Description

(1) Technical field [0001] The invention relates to a pure dry-type wall-piercing bushing widely used in households and indoors of a 35kV-220kV power grid. (two), background technology [0002] At present, in high-voltage power grids, traditional porcelain oil-impregnated bushings are commonly used, which have disadvantages such as difficult processing, high cost, complicated process, heavy quality, and high installation and maintenance costs. In order to solve this problem, in the mid-1990s, an organic composite sleeve was gradually used to replace the traditional product. The basic structure is shown in the figure. Due to its multi-layer wrapping and oil-containing conical structure, problems such as sliding screen, cracking screen, and oil leakage are prone to occur during manufacturing, assembly, handling, and construction. Under the action of high voltage and electric field force, the internal insulating medium is prone to lateral displacement, causing the aluminum fil...

AI Technical Summary

Problems solved by technology

The basic structure is shown in the figure. Due to its multi-layer wrapping and oil-containing conical structure, problems such as sliding screen, cracking screen, and oil leakage are prone to occur during manufacturing, assembly, handling, and construction. Under the action of high voltage and electric field force, the internal insulating medium is prone to lateral displacement, causing the aluminum film electrode to be torn, and the internal electric field and insulation are unbalanced. When the damage accumulates to a critical state, an irreversible avalanche discharge will occur until Make the faulty part explode

Images