Dry casing insulator vacuum gas pouring system and pouring method thereof

Abstract

The invention discloses a dry casing insulator vacuum gas pouring system comprising an epoxy resin casting mould, a feeding tank, a gas storage pressure tank, a gas compressor, a vacuum pump, an insulating gas storage and filling device and a gas recovery device; the feeding tank is connected to the epoxy resin casting mould through a feeding pipe, and the gas storage pressure tank is located between the feeding tank and the gas compressor, and connected to the feeding tank and the gas compressor through pipelines; and the vacuum pump and the insulating gas storage and filling device are connected to the epoxy resin casting mould through a vacuum pumping pipeline and a gas filling pipeline separately, and the gas recovery device is connected to the gas filling pipeline through the gas recovery pipeline in parallel. According to the dry casing insulator vacuum gas pouring system, by adopting a method of vacuumizing a special mould and filling insulating gas, the automatic pressure setting of epoxy resin is achieved, and the insulation level of the product is improved; the possibility of partial discharge is reduced, and the dry casing insulator vacuum gas pouring system has the characteristics of advanced production means, less manual intervention and high rate of finished products.

Description

technical field [0001] The invention relates to the field of electric equipment, in particular to a dry-type bushing insulator vacuum gas filling pouring system and a pouring method thereof. Background technique [0002] At present, more and more dry bushings are used in power equipment to replace the commonly used porcelain bushings. Porcelain bushings whose main body is made of porcelain clay materials have many defects and weaknesses in terms of insulation and mechanical strength, so it is inevitable to be replaced by dry bushings. As a new technology, there is still much room for improvement in the manufacturing process of the dry bushing, especially the main insulator of the dry bushing. At present, most of the manufacturing methods for dry-type bushings with relatively low voltage levels are epoxy resin pressure gel technology using mold hot pressing. This product is formed quickly and has a high yield. Air is inevitably brought in when fake epoxy resin is used, and ...

AI Technical Summary

Problems solved by technology

At present, in the production of high-voltage dry-type bushings, epoxy resin impregnation technology is mostly used. Compared with pressure gel technology, this technology has more serious defects. The impregnation process brings more air bubbles, and the product yield rate lower

The above methods are all limited by the fact that the air with poor insulation performance is difficult to be effectively controlled, and it is wrapped in the bushing insulator, which seriously affects the electrical performance of the product

This technical defect limits the use of the product on high voltage

Images