Epoxy resin dry-type wall bushing

Abstract

The invention discloses an epoxy resin dry-type wall-through bushing, which comprises an insulator which is mainly made of an outdoor epoxy resin added with auxiliary materials such as a curing agent and a toughening agent. The inner center of the insulator is provided with a The carrier fluid is provided with a metal flange in the middle of the outside, and a metal cover is provided at each end; the side of the metal flange is in the shape of a "ten", and the insulators at both ends are in the shape of multi-layer sheds, and the metal The upright part of the flange is wrapped in the insulator, and the outer surface is exposed outside the insulator; the upright part of the metal flange exposed outside the insulator is provided with a measuring terminal, and the measuring terminal is connected with a capacitive screen arranged in the insulator. This epoxy resin dry wall bushing has no oil, no gas and pure solid, high temperature resistance, stable electrical performance, no danger of combustion and explosion, compact structure, small size, easy transportation, high bending strength, excellent mechanical properties, Long service life and low long-term operating costs.

Description

technical field [0001] The invention relates to the field of components for power equipment, in particular to an epoxy resin dry-type wall-through bushing. Background technique [0002] At present, most of the wall bushings used in power systems are traditional oil-filled capacitive porcelain jacket bushings, and a few are relatively dry bushings (the outer insulation is silicone rubber, and the internal capacitor core is These casings are made of insulating film and aluminum foil coated with silicone oil). These casings have oil leakage pollution, low mechanical strength, poor sealing performance and antifouling performance due to the limitations of design ideas, material use and process equipment. , Explosive, thereby endangering personal and equipment safety and other defects, can no longer meet the requirements of the power sector for miniaturization, oil-free, maintenance-free (less) maintenance and high reliability for high-voltage electrical products. [0003] Foreig...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the wall bushings used in power systems are traditional oil-filled capacitive porcelain jacket bushings, and a few are relatively dry bushings (the outer insulation is silicone rubber, and the internal capacitor core is These casings are made of insulating film and aluminum foil coated with silicone oil). These casings have oil leakage pollution, low mechanical strength, poor sealing performance and antifouling performance due to the limitations of design ideas, material use and process equipment. , Explosive, thus endangering personal and equipment safety and other defects, can no longer meet the miniaturization, oil-free, maintenance-free (less) maintenance and high reliability requirements put forward by the power department for high-voltage electrical products

[0003] Foreign dry-type wall bushings use epoxy resin impregnated paper capacitor cores as the main insulation, and ceramic sleeves or composite hollow insulators are installed on the outside to bear the mechanical load and serve as external insulation. Filled with silicone grease, although the performance of this kind of bushing is better than that of oil-filled capacitive porcelain jacket bushing, but because of its long delivery time, high price, and lack of perfect after-sales service, it is Users are discouraged

Images