架空输电线路连接金具U型挂环的尺寸优化设计及耐磨性能研究

李冬青, 郑树会, 刘臻, 刘胜春, 司佳钧

doi:10.16577/j.issn.1001-1560.2024.0261

材料保护 >

2024 , Vol. 57 >Issue 11: 166 - 171

DOI: https://doi.org/10.16577/j.issn.1001-1560.2024.0261

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架空输电线路连接金具U型挂环的尺寸优化设计及耐磨性能研究

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中国电力科学研究院有限公司

李冬青(1986－)，高级工程师，博士，主要研究方向为输电线路耐磨金具，电话:010－58387033，E-mail:lidongqing1016＠163.com

收稿日期: 2024-07-02

修回日期: 2024-08-08

录用日期: 2024-08-10

网络出版日期: 2024-12-23

基金资助

国家电网有限公司总部科技项目(5500-202216123A-1-1-ZN)资助

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Study on the Optimization Design of Dimensions and Abrasion Resistance of U-Shaped Suspension Rings for Overhead Transmission Line Connection Fittings

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(China Electric Power Research Institute，Beijing 02401，China)

LI Dongqing(1986－)，Senior Engineer，Ph.D.，Research Focus: Wear Resistant Fittings of Transmission Lines，Tel.: 010－58387033，E-mail:lidongqing1016＠163.com

Received date: 2024-07-02

Revised date: 2024-08-08

Accepted date: 2024-08-10

Online published: 2024-12-23

Supported by

Technology Project of State Grid Corporation of China (5500-202216123A-1-1-ZN)

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摘要

在强风沙环境下，传统架空输电线路连接金具在运行时会发生剧烈磨损，严重影响架空输电线路的安全可靠运行。为解决这一问题，对连接金具U 型挂环进行了尺寸优化设计以及材料比选研究，并开展了新型U 型挂环的磨损试验。结果表明:35CrMo 钢U 型挂环的耐磨性能较好，U 型挂环经过尺寸优化设计后，磨损接触面增大，在同样磨损体积下，磨损深度略有降低，磨损试验后破坏载荷均满足标准要求。Q355NH 耐候钢U 型挂环的耐磨性能较差，15 万次磨损试验后，磨损深度是35CrMo 钢的2.3 倍。因此，优化设计后的35CrMo 钢U 型挂环可以考虑应用于输电线路工程中。

关键词： U 型挂环; 磨损; Q235 钢; 35CrMo 钢; Q355NH 钢

本文引用格式

李冬青, 郑树会, 刘臻, 刘胜春, 司佳钧 . 架空输电线路连接金具U型挂环的尺寸优化设计及耐磨性能研究[J]. 材料保护, 2024 , 57(11) : 166 -171 . DOI: 10.16577/j.issn.1001-1560.2024.0261

Abstract

In strong wind and sand environments，traditional connection fittings for overhead transmission lines experience severe wear during operation，which significantly impacts the safe and reliable operation of overhead transmission lines.To address this issue，the U-shaped suspension rings of the connection fittings were optimized in terms of dimensions，and a material selection study was conducted.Additionally，wear tests were performed on the newly designed U-shaped suspension rings.Results showed that U-shaped suspension rings made of 35CrMo steel exhibited superior wear resistance.After dimensional optimization of U-shaped suspension rings，the wear contact area increased，leading to a slight reduction in wear depth under the same wear volume.The failure load after the wear tests met the standard requirements.In contrast，U-shaped suspension rings made of Q355NH weathering steel demonstrated poor wear resistance，with a wear depth 2.3 times greater than that of 35CrMo steel after 150 000 wear cycles.Therefore，the optimized 35CrMo steel U-shaped suspension rings could be considered for application in transmission line projects.

Key words： U-shaped ring; wear; Q235 steel; 35CrMo steel; Q355NH steel

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