基于激光超声波技术的锅炉管道裂纹检测分析  

Analysis of Boiler Pipeline Crack Detection Based on Laser Ultrasonic Technology

作　　者：蔡斌[1] Cai Bin(Anhui Special Equipment Testing Institute,Hefei Anhui 230051,China)

机构地区：[1]安徽省特种设备检测院,安徽合肥230051

出　　处：《机械管理开发》2025年第2期257-258,261,共3页Mechanical Management and Development

摘　　要：为了进一步提高锅炉管道内表面裂纹缺陷检测精度,提出了一种激光和超声耦合检测技术。激光超声信号在锅炉管道内遇到裂纹时会产生显著波动。研究结果表明:透射法周向扫描检测下管道表面透射波信号幅值能很好表征锅炉管道内表面裂纹缺陷,表面的透射波信号仅为4mV;轴向裂纹测试得到,曲线在24°位置时,检测信号表面幅值最小,从而说明,该点就是位于裂纹的正上方。此技术可以将锅炉管道内表面的的裂纹检测出来并且进行成像处理,以期为非接触、高精度无损检测提供参考。Boiler pipes are prone to crack under high temperature and high pressure conditions,and its detection is the key to ensure the operation of equipment.In order to further improve the detection accuracy of cracks on the inner surface of boiler pipes,a laser and ultrasonic coupling detection technology was proposed.When the laser ultrasonic signal encounters a crack in the boiler pipe,its signal will fluctuate significantly.The results show that the transmission wave signal amplitude of the pipeline surface detected by the transmission method is a good representation of the cracks on the inner surface of the boiler pipeline.The transmitted wave signal on the surface is only 4mV.The axial crack test results show that when the curve is at the position of 24°,the surface amplitude of the detected signal is the smallest,which indicates that the point is located right above the crack.This method can detect the cracks on the inner surface of the boiler pipe and carry out imaging processing,in order to provide a reference for non-contact and high-precision nondestructive testing of the pipe.

关 键 词：锅炉管道 裂纹检测 激光超声 无损检测 

分 类 号：TE832[石油与天然气工程—油气储运工程]