基于超声导波和脉冲涡流技术的承压设备腐蚀检测

Corrosion detection of pressure equipment based on ultrasonic guided wave and pulsed eddy current technology

超声导波技术可以长距离、快速地在免除大面积拆除包覆层的基础上检测承压设备的内外壁腐蚀缺陷,但对带有包覆层承压设备的缺陷复验存在一定困难。针对上述问题,采用脉冲涡流技术对超声导波检测结果进行复验,通过设置对比试块检测试验和现场检测应用,证明了脉冲涡流技术可以有效地复验超声导波的检测结果,这两种技术的结合使用,能够使超声导波技术更好地应用于承压设备的检测中。

Ultrasonic guided wave technology can detect corrosion defects on the inner and outer walls of the pressure equipment in long-distance,fast,and large-scale manner without the need of removing the coating.However,there are certain difficulties in re-examining the defects of pressure equipment with cladding.In response to the above problems,this paper uses pulse eddy current technology to reexamine the ultrasonic guided wave test results,By setting a test block for comparative test,and conducting on-site testing application,it is proved that the pulse eddy current technology can effectively recheck the ultrasonic guided wave test results.Through the combined use of these two technologies,ultrasonic guided wave technology can be better applied to the detection of pressure equipment.