基于超声脉冲反射法的耐张线夹压接缺陷检测技术  

Detection of ultrasonic detection technology for tensioning clamp crimping defects based on pulse reflection method

作　　者：方春华[1] 游海鑫 胡冻三 董晓虎 程绳 吴军 饶迪 许瑶 FANG Chunhua;YOU Haixin;HU Dongsan;DONG Xiaohu;CHENG Sheng;WU Jun;RAO Di;XU Yao(College of Electrical and New Energy,Three Gorges University,Yichang 443002,China;Wanzhou Power Supply Branch,State Grid Chongqing Electric Power Company,Chongqing 404100,China;State Grid Hubei Ultra-High Voltage Company,Wuhan 430000,China)

机构地区：[1]三峡大学电气与新能源学院,湖北宜昌443002 [2]国网重庆市电力公司万州供电分公司,重庆404100 [3]国网湖北省超高压公司,湖北武汉430000

出　　处：《中国测试》2025年第3期148-153,共6页China Measurement & Test

基　　金：2020年度电网环境保护国家重点实验室开放基金项目(GYW51202201415)。

摘　　要：为实现耐张线夹铝绞线压接缺陷的快速检测,提出基于超声脉冲反射法检测线夹压接缺陷的方法。首先根据超声脉冲反射法的原理,结合压接后NY-630/45型耐张线夹内部结构,从理论分析超声检测耐张线夹压接缺陷的可行性;随后建立压接合格、欠压以及铝线安装深度不足线夹的二维截面有限元仿真模型,研究超声波在不同压接缺陷中的传播规律;制备压接缺陷试样,探究不同检测面对检测结果的影响,最后验证基于超声脉冲反射法检测NY-630/45型耐张线夹压接缺陷的可行性。仿真和试验结果表明,超声检测方法可以准确判断耐张线夹压接缺陷。该技术可为现场耐张线夹压接缺陷的检测以及识别提供思路,具有重要参考价值。In order to realize the rapid detection of crimping defects of aluminum cable steel reinforced in tension clamp,a method based on ultrasonic pulse reflection method is proposed to detect crimping defects of wire clamps.Firstly,according to the principle of ultrasonic pulse reflection method,combined with the internal structure of NY-630/45 tension clamp after crimping,the feasibility of ultrasonic detection of crimping defects was theoretically analyzed.The two-dimensional cross-section finite element simulation model of the clamp with underpressure and insufficient installation depth of aluminum wire is used to study the propagation law of ultrasonic waves in different crimping defects.The samples with crimping defects were prepared,and the influence of different detection faces on the detection results was explored.Finally,the feasibility of detecting the crimping defects of NY-630/45 tension clamp based on ultrasonic pulse reflection method was verified.The simulation and experimental results show that the ultrasonic testing method can accurately determine the defects of tension clamp.This technology provides an idea for the detection and identification of the crimping defects of the tension clamp,and has important reference value.

关 键 词：耐张线夹 压接缺陷 钢芯铝绞线 超声检测技术 

分 类 号：TB9[一般工业技术—计量学] TB553[机械工程—测试计量技术及仪器] TM752[理学—物理]