Dry casing insulator vacuum gas pouring system and pouring method thereof

Abstract

The invention discloses a dry-type bushing insulator vacuum gas filling casting system, which includes an epoxy resin casting mold, a material injection tank, a gas storage pressure tank, a gas compressor, a vacuum pump, an insulating gas storage and inflation device, and a gas recovery device; The injection tank is connected with the epoxy resin casting mold through the injection pipe, and the gas storage pressure tank is located between the injection tank and the gas compressor, which is connected with the pipeline between the injection tank and the gas compressor; the vacuum pump and The insulating gas storage and inflation device is respectively connected to the epoxy resin casting mold through the vacuum pumping pipeline and the gas filling pipeline, and the gas recovery device is connected in parallel to the gas filling pipeline through the gas recovery pipeline. This dry-type bushing insulator vacuum gas filling system adopts the method of vacuuming the special mold and filling the insulating gas to realize the automatic pressure coagulation of the epoxy resin, which improves the insulation level of the product and reduces the possibility of partial discharge. Advanced production means, less manual intervention, and high product yield.

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

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