非开挖钻杆管端存在内部变径区,传统的无损检测方式难以准确检测出该区域缺陷,故目前多为人工手持内窥镜检测,检测效率极低。为解决该区域内部缺陷检测效率低的问题,通过分析非开挖钻杆结构的特殊性,提出了采用成像技术获取管端内变径区图像的方法,设计了一套内成像检测装置,实现了内部图像的自动获取,便于检测人员对该部位进行检测。现场应用结果表明:该装置能清晰、快速的获取内部图像,大幅度提高了检测效率并降低了漏检率。 There is an internal reduction zone at the pipe end of the tillage drill pipe, which is difficult to accurately detect the defect in the area by the conventional non-destructive testing method. Therefore, the manual endoscopic inspection is mostly performed at present, and the detection efficiency is extremely low. In order to solve the problem of low detection efficiency of internal defects in the region, a method of obtaining the image of the end-of-pipe in the pipe end by using the imaging technology is proposed by analyzing the particularity of the structure of the non-dredged drill pipe. An in-plane imaging detection device is designed and implemented The internal image of the automatic acquisition, easy to detect personnel to detect the site. The field application results show that the device can acquire internal images clearly and quickly, greatly improve the detection efficiency and reduce the missed detection rate.