Hollow paste-injected post insulator employing vacuum impregnated fiber

Abstract

The invention discloses a hollow paste-injected post insulator employing a vacuum impregnated fiber. The hollow paste-injected post insulator comprises an upper flange, a vacuum impregnated fiber column, an adhesive, a silicone umbrella skirt, a lower flange and white paste mud, wherein the upper flange is connected with one end of the vacuum impregnated fiber column; the other end of the vacuum impregnated fiber column is connected with the lower flange; the vacuum impregnated fiber column is in a hollow cylindrical structure; the surface of the vacuum impregnated fiber column is connected with the silicone umbrella skirt through the adhesive; the hollow part of the vacuum impregnated fiber column is filled with the white paste mud; and the inner sides of two ends of the vacuum impregnated fiber column are connected with seal covers through threads. The insulator disclosed by the invention can adapt to an environment temperature from -50 DEG C to +50 DEG C; the minimum creep distance, the lightning impulse withstand voltage, the switching impulse withstand voltage and the power-frequency wet-withstand voltage all can reach or exceed the requirements of other post insulators with the same model; the electric resistance of the hollow paste-injected post insulator can greatly exceed that of a traditional post insulator; and in addition, the mechanical strength completely conforms to the standards and requirements.

Description

technical field [0001] The invention belongs to the technical field of power transmission components, and in particular relates to a vacuum glue-impregnated fiber hollow paste-injected post insulator. Background technique [0002] Post insulators are equipment used to ensure the normal operation of power transmission equipment. They play an important role in overhead power transmission lines. They ensure that power transmission equipment has sufficient insulation and support, so they are widely used in overhead power transmission systems. [0003] The existing post insulator devices usually adopt the structure of insulating parts and upper and lower flanges fastening. The insulating parts are either hollow porcelain or dry solid. Although they can basically meet the requirements, they often have the following defects: [0004] 1. Based on mechanical strength and operational considerations, ceramic devices are fragile, solid and bulky, and difficult to transport and install; ...

AI Technical Summary

Problems solved by technology

[0004] 1. Based on mechanical strength and operational considerations, ceramic devices are fragile, solid and bulky, and difficult to transport and install;

[0005] 2. It is difficult to seal the interface between the porcelain insulator and the upper and lower flanges, and the sealing performance is poor, which affects the electrical performance;

[0006] 3. Since the traditional porcelain pillar hollow insulators are mostly oil-immersed, they are prone to explosion at high temperature, and their safety performance is too low;

[0007] 4. The electrical resistance of dry-type solid insulators is lower than that of hollow-filled insulators;

[0008] 5. The structure of traditional porcelain insulators is complicated, and it is difficult to maintain or even be scrapped if a fault occurs;

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