Production process of insulation pull rod

Abstract

The invention discloses a production process of an insulation pull rod. The production process comprises an insulation pipe blank pipe curing and molding phase, an insulation pipe blank pipe machining phase and a connector bonding phase, wherein in the insulation pipe blank pipe curing and molding phase, fiber materials are dried in vacuum; resin is impregnated under a vacuum environment and the fiber materials are subjected to primary curing; after de-molding, the fiber materials are subjected to secondary curing to obtain an insulation pipe blank pipe; the insulation pipe blank pipe is machined; the insulation pipe blank pipe is bonded with a connector by adopting a heat-expansion and cold-contraction principle; and finally, the insulation pull rod is obtained. According to the production process of the insulation pull rod, the technical defects of a production process of the insulation pull rod that air gaps, micro-cracks, concentrated stress and layering are easy to generate, the connection of the connector is not reliable, the air gaps are easy to generate in a bonding layer of the connector and the insulation pipe and the like are overcome.

Description

technical field [0001] The invention relates to a production process of an insulating pull rod, in particular to a production process of a fiber-reinforced composite material insulating pull rod. Background technique [0002] As an important part of opening and closing in high-voltage switchgear, the insulating tie rod requires good insulation performance, high mechanical performance and SF6 gas corrosion resistance, and also needs to have the characteristics of light weight. Insulating rods for high-voltage switches are widely used in the production process of casting epoxy resin in the middle insulating part and casting joints at both ends. The insulating rods produced by this process have the disadvantages of poor mechanical properties and heavy weight. [0003] In order to improve these shortcomings, the most common method at present is to use vacuum pressure impregnated insulating tubes to replace the middle insulating part of the insulating tie rods, and to connect the...

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Problems solved by technology

[0005] The present invention aims to provide a production process of insulating tie rods with high electrical performance and mechanical performance and high operational reliability, so as to solve the problem that air gaps, microcracks, stress concentration, delamination, and unreliable joint connection are easy to occur in the production process of insulating tie rods , joints and insulating tube bonding layer is prone to technical defects such as air gaps

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