摘要
城市供暖所用热力管道在运行过程中不可避免因老化腐蚀发生泄漏,造成安全事故,针对其开展的无损检测技术研究受到国内外研究者的广泛重视。基于脉冲涡流的基本原理,开展了对并行热力管道腐蚀缺陷的非开挖检测技术研究。通过模拟现场实际工况实验,采集管道的感应电动势信号,建立感应电动势与管道壁厚的关系模型;依此模型为基础,计算出并行热力管道的壁厚值,依据管壁厚度的变化定位管道腐蚀缺陷位置。该研究为城市并行热力管道的腐蚀缺陷检测提出了一种行之有效的方法,具有良好的工程实用价值。
Heat distribution pipeline used in city heating would inevitably produee aging corrosion leakage, even cause safety accidents. Both domestic and international scholars pay more attention to the study of non-destructive testing. In this paper, we developed the research on trenchless detection of the parallel heating pipelines＇ corrosion defects based on the basic principle of pulsed eddy current. By using simulative actual working condition, we collected the pipeline＇ s induced electromotive force signal, and established the relation model between induced electromotive force and pipeline wall thickness. Furthermore, on the basis of this model, we calculated the parallel heating pipeline＇ s wall thickness values. According to the change of wall thickness, corrosion defects were located. This study proposed a feasible method for detection of eity parallel heating pipelines＇ corrosion defects, and has good practical values in engineering.
出处
《南昌航空大学学报（自然科学版）》
CAS
2013年第4期90-95,共6页
Journal of Nanchang Hangkong University(Natural Sciences)
基金
江西省教育厅青年基金项目(GJJ13488)
关键词
热力管道
脉冲涡流
非开挖
感应电动势
parallel heating pipe line
pulsed eddy eurrent
trenchless
induced electromotive force
作者简介
刘凯（1987一），男，南昌航空大学测试与光电工程学院硕士研究生主要研究方向：电磁检测。
