Rod-shaped epoxy glass fiber core porcelain composite insulator for electrified railway catenaries

Abstract

The invention discloses a rod-shaped epoxy glass fiber core porcelain composite insulator for electrified railway catenaries. The rod-shaped epoxy glass fiber core porcelain composite insulator for electrified railway catenaries comprises an insulator body, an upper metal cap and a lower metal cap, wherein the insulator body comprises an insulator body core, an insulator body jacket and a silicone rubber umbrella skirt; the insulator body jacket is made of a porcelain material; the insulator body core is arranged in the insulator body jacket; the insulator body core and the insulator body jacket are connected through insulating paste to form the solid insulator body; the silicone rubber umbrella skirt is arranged on the outer surface of the insulator body jacket through a hot pressing or injection manner. Therefore, the rod-shaped epoxy glass fiber core porcelain composite insulator for electrified railway catenaries has the advantages of being lighter in weight, more convenient to carry and install and safer to use.

Description

technical field [0001] The invention relates to a rod-shaped epoxy glass fiber core porcelain composite insulator for an electrified railway catenary. Background technique [0002] In the prior art, in order to solve the problems that the traditional pure porcelain insulators are bulky, heavy and unfavorable for installation, the Chinese patent document CN101894638B provides a composite rod insulator for high-voltage power stations, power grids and electrified railway catenary. Its specific The structure is that it contains upper and lower metal flanges and an insulator body, and the two ends of the insulator body are respectively connected to the upper and lower metal flanges through adhesive materials. The insulator is integrally made of high-voltage electric porcelain materials, and the inner core insulator is matched and arranged in the inner cavity of the outer shell insulator. The inner core insulator is made of organic insulating material, and is solidified by insulat...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, in order to solve the problems that the traditional pure porcelain insulators are bulky, heavy and unfavorable for installation, the Chinese patent document CN101894638B provides a composite rod insulator for high-voltage power stations, power grids and electrified railway catenary. Its specific The structure is that it contains upper and lower metal flanges and an insulator body, and the two ends of the insulator body are respectively connected to the upper and lower metal flanges through adhesive materials. The insulator is integrally made of high-voltage electric porcelain materials, and the inner core insulator is matched and arranged in the inner cavity of the outer shell insulator. The inner core insulator is made of organic insulating material, and is solidified by insulating glue and tightly combined with the inner cavity wall of the outer shell insulator to form a solid insulator ontology

However, the composite rod-shaped insulator in the above-mentioned prior art also has the following defects. First, the high-voltage electric ceramic material used in the shell insulator is easy to be contaminated with dust, accumulates stains, and has poor anti-pollution performance. Once encountering rainy and snowy weather, the electrolyte in the dirty layer will decompose and fully dissolve in the water, and then form a conductive path on the surface of the insulator, which greatly reduces the insulation strength of the insulator, and can cause insulator pollution under normal operating voltage. flashover, which can easily lead to a series of line faults, so it must be cleaned regularly to reduce the probability of pollution flashover faults; second, because the shell insulator is still made of high-voltage electric ceramic materials, although it is heavier than pure porcelain insulators Lightened, but the overall weight is still relatively heavy, and there are still great difficulties in handling and installation

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