空心复合绝缘子内部人工缺陷的相控阵超声波检测方法研究

空心复合绝缘子内部人工缺陷的相控阵超声波检测方法研究摘要： 针对利用传统方法对复合绝缘子内部缺陷进行检测，不仅检出率不高，而且所表现出的灵敏度也不显著，亦或为操作时间过长，并且过程相对复杂。本篇论文，旨在借助于超声波相控阵检测法的作用，针对现有的空心悬式绝缘子当中，所存在的一系列问题，进行科学合理的综合检测。本文之初，旨在针对相控阵超声波在检测过程中的基本步骤，进行相对深入的细致阐述。然后基于实验结果，针对伞裙护套以及相应芯棒彼此之间的紧密衔接等，进行科学合理的综合分析，并据此生成相应的相控阵图像。关键词：复合绝缘子、缺陷检测、相控超声波中图分类号：AAAAAStudy on phased-array ultrasonic detection method for internal artificial defects of hollow composite insulatorsAAAA1，AAAA1（1．AAAAAAAAA AAAAA AAA AAAAA）Abstract: In view of the problems such as low detection rate, poor sensitivity, complex, time-consuming and destructive steps, or too high detection conditions required by traditional methods in the detection of internal defects of composite insulators, this paper USES ultrasonic phased array detection method to detect the internal artificial defects of hollow composite insulators. Firstly, the phased-array ultrasonic testing procedure is introduced, and then, based on the experimental results, the phased-array image features of good adhesion between the sheath and the mandrill, the porosity defect in the middle of the sheath, the section defect in the middle of the rubber, and the phased-array image of bad adhesion between the sheath and the mandrill are analyzed in depth.Key words: Composite insulator, defect detection, phased ultrasound1. 前言20 世纪 90 年代，中国频繁出现污闪事故，电网逐步引进数量性的复合绝缘子。在当前时期，复合绝缘子基于中国范围内已经获得相对稳定的蓬勃发展。1990-2001 年，中国电网当中所含的复合绝缘子数量，已经由本来的 3000 支，逐步攀升至 60 万支，在此之后，中国范围内的复合绝缘子，以每年高于 100...