Epoxy resin dipping fibre high voltage insulation core body

Abstract

A high-voltage insulating core of epoxy resin-impregnated fiber contains a conductor set up in the center of the insulator core whose peripheral surface is wrapped alternately by an epoxy resin-impregnated fiber layer and a capacity polar plate. The epoxy resin fiber-impregnated insulator is wrapped by an umbrella shaped sheath and the capacity polar plate is made of metal mesh or carbon fiber non-woven fabric having good adhesive strength to the epoxy resin-imprengated fibre layer seldom appearing seams of separation in-between. The metal mesh or carbon fiber non-woven fabric has the performance of high-low temperature resistance and keeps stable in long term operation, avoiding carbon powder dropping or mixing into the liquid epoxy resin to guarantee its isolation ability when they are used as the condense screen in the operation of wet process winding.

Description

Technical field:

[0001] The invention relates to a resin-impregnated fiber high-voltage insulating core, which is a main part of a high-voltage electrical appliance and is mainly used as an insulating core for passing high-voltage electricity through a grounding body, such as a wall bushing, a transformer bushing, a switch Insulation core body of casing, etc., insulation core body of primary winding of transformer, insulation core body of cable terminal head and cable intermediate head, etc. Background technique:

[0002] The insulating cores of high-voltage electrical appliances in the prior art include the following types: (1) oil-paper insulating cores. For example, traditional wall bushings, transformer bushings, current transformers, etc., mostly use oil-paper insulating cores, and paper or paper with metal plates in the middle are wrapped on the carrier fluid, and the insulating cores formed are filled with (2) SF6 gas-filled insulating core; (3) Rubber insulating cor...

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