在对带包覆层管道进行脉冲涡流检测时, 带包覆层管道周围经常存在其他管道, 这些管道会对脉冲涡流管道检测造成干扰。针对这种情况, 建立了周边管道在被检测管道的两侧且与检测管道平行的仿真模型, 比较周边管道与被检测管道不同距离情况下的干扰影响。进行了周边管道在不同位置的多组试验, 并与仿真结果进行比较。结果表明, 周边管道在被检测管道两侧0.6 m处时开始影响检测结果。

When conducting a pulsed eddy current testing of corrosive pipeline with cladding layer,other channels are often surrounded by other popes in the vicinity, causing interference detection.For this case,the simulation model of interference tube,which is on the both sides of the test pipe and parallel to the direction of the detection,has been formed,comparing the impact of interferences in case of different distances.Meanwhile,several experiments of interference tube at different positions have also been conducted in order to make a comparison with the simulation.The simulation and experimental results show that test results will be affected when the interference detection pipe is 0.6m apart from the detection tube on both sides.