A 420KN round-head sandblasted suspension insulator

CN122091341APending Publication Date: 2026-05-26JIANGXI NEW ELECTRIC CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGXI NEW ELECTRIC CO LTD
Filing Date
2026-04-22
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

The existing 420KN round-head sandblasted suspension insulator has problems such as poor stability of sandblasting layer bonding, insufficient adaptability of shed structure, poor sealing performance of connection parts, inconvenient installation and maintenance, and weak impact resistance under special harsh environments. It is difficult to withstand electromechanical destructive loads for a long time, which affects the safety and service life of transmission lines.

Method used

It adopts a three-layer anti-fall-off sandblasting structure, a stepped umbrella skirt design with different diameters, a sealing and locking mechanism, and internal reinforcing ribs of ceramic parts. Combined with an annular groove and maintenance marking area, it improves the stability of the sandblasting layer bonding, the stain resistance of the umbrella skirt, the sealing of the connection parts, and the impact resistance, so as to achieve convenient installation and maintenance.

Benefits of technology

It significantly improves the weather resistance and corrosion resistance of the sandblasted layer, enhances the self-cleaning performance and mechanical load-bearing stability of the skirt, reduces operation and maintenance costs and breakage rate, extends the service life of insulators, and meets the needs of high-voltage transmission lines in harsh environments such as industrial dust, chemical, saline-alkali, coastal and foggy environments.

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Abstract

This invention discloses a 420KN round-head sandblasted suspension insulator, relating to the field of suspension insulator technology. To improve the stability, pollution resistance, mechanical load-bearing reliability, ease of installation and maintenance, and impact resistance of the sandblasted layer of the round-head sandblasted suspension insulator, it specifically includes a porcelain body, a round-head connecting assembly, a skirt assembly, and an anti-detachment sandblasting structure. The porcelain body is a columnar structure with a round head integrally formed at the top. The round-head connecting assembly is fixedly installed on the top of the round head for connection with transmission towers or adjacent insulators. The skirt assemblies are spaced apart along the axial direction of the porcelain body. The anti-detachment sandblasting structure covers the outer surface of the round head and the outer surface of the skirt assembly. This invention effectively solves the problems of easy detachment and cracking of existing sandblasted layers. Simultaneously, the protective surface layer improves the weather resistance and corrosion resistance of the sandblasted layer, extends its service life, and thus ensures the long-term stable pollution resistance and insulation performance of the insulator, making it suitable for use in particularly harsh environments.
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