针对传统射线检测方法不能满足在役原油管道焊缝检测的现状，利用相控阵超声检测的特点，采用角度楔块形成纵波声场对在役原油管道焊缝进行检测。经工艺模拟和现场检测验证，并根据相控阵A/S/B/C图像对缺陷进行分析，同时将检测结果与射线底片进行比对，说明相控阵检测能够满足检测要求，为在役管道焊缝检测提供了一种新的技术手段。

In view of the present situation that the traditional X-ray method cannot meet the requirements of in-service oil pipeline weld inspection, this paper uses the characteristics of phased array ultrasonic focusing and applies angle wedge to form longitudinal wave acoustic field to inspect the in-service oil pipeline. After process simulation and field inspection verification, the defects are analyzed according to phased array A/S/B/C images, and the inspection results are given. Compared with X-ray film, it can meet the requirements of inspection, and provide a new technical way for in-service pipeline weld inspection.