Composite high-voltage casing and its production process

Abstract

The present invention discloses a pure dry composite housing high-voltage sleeve and its production method. Its main insulating layer is a multilayer series-connected pure solie concentric ylinder insulating layer made up by at least using two kind of solid layers which are spaced and tightly combined, the insulating housing and connecting sleeve are tightly connected with external side of main insulating layer. The production method includes the following steps: using peoxy glass fibre wet winding-forming process to make semi-conductor band and glass fibre material coated with epoxy resin wind round the conducting bar according to sinesoid law to make main insulating layer, solidifying and surface processing, fixing connecting sleeve, mounting insulating housing, equalizing cover and wiring terminal, it contains no any oil or gas, can prevent leakage of oil and gas and explosion hidden peril, and its weight is light and small in volume, and cost is low.

Description

Technical field: [0001] The invention belongs to a high-voltage electrical device used when a high-voltage conductor in electric equipment passes through walls or other equipment (transformers, etc.) Background technique: [0002] At present, the high-voltage bushings used in the power system when the high-voltage lines pass through the wall or the grounding shell of the equipment contain conductive rods, main insulating layers, insulating jackets and connecting bushings, etc., and their structural forms basically have the following types: one is For the traditional oil-paper capacitor type and gas-insulated type, the insulating jackets are all porcelain sleeves. The main insulating layer of the oil-paper capacitor type is generally a multi-layer insulating layer made of insulating paper and aluminum foil strips (or semiconductor strips) at intervals. There is a gap between each layer, and the gap is filled with transformer oil. The main insulating layer Transformer oil is ...

AI Technical Summary

Problems solved by technology

The processing methods of the main insulating layer of the above high-voltage bushings all adopt roughly the same rolling process and rolling equipment, but there are differences in structure, but no matter what kind of structure contains non-solid oil or gas, therefore, there are Various defects such as oil leakage and air leakage, unstable electrical performance, poor mechanical and pollution resistance, heavy maintenance workload, flammable and explosive hazards to personal and equipment safety, short service life and complicated processing technology

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