Analysis of thermal-mechanical characteristics and metallographic detection of broken connection of transmission line

Proceedings of the 6th International Conference on High Performance Compilation, Computing and Communications Pub Date : 2022-06-23 DOI:10.1145/3546000.3546030

Sijin Cheng, Y. Zhou, Hao Sun, Junjian Tian, He Zhu, Jinfu Zhu, Hanliang Liao

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Abstract

In order to study the thermal mechanical characteristics of the broken line of the connecting pipe and pipeline joint of the transmission line, the tensile test of the steel cored aluminum strand steel wire, the thermodynamic analysis of the broken line joint of the connecting pipe and the metallographic test of the steel core of the broken line joint were carried out successively. The tensile strength of the steel core of the steel cored aluminum strand, the temperature load curve at different times and the metallographic test results of the steel core of the broken line joint were obtained, Finally, the exposed section of steel core is tested by metallography. The results show that the tensile strength of steel cored aluminum strand meets the standard, the heating of connecting pipe caused by conductor current will affect the calculated breaking force of steel core, and the exposed section of steel core has been running at high temperature for a period of time before being pulled off.

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输电线路断线热力学特性分析及金相检测

为了研究输电线连接管断线和管道接头的热力学特性，先后进行了钢芯铝绞线钢丝的拉伸试验、连接管断线接头的热力学分析和断线接头钢芯的金相试验。获得了钢芯铝绞线钢芯的抗拉强度、不同时间的温度载荷曲线以及断线接头钢芯的金相试验结果，最后对钢芯裸露截面进行金相试验。结果表明:钢芯铝绞线的抗拉强度符合标准，导体电流引起的连接管发热会影响计算的钢芯断裂力，钢芯裸露段在高温下运行一段时间后才被拉断。

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Proceedings of the 6th International Conference on High Performance Compilation, Computing and Communications

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