管道弱磁应力内检测装置的设计与应用

Design and application of weak magnetic stress inline inspection device for pipeline

新建管道的应力检测是其长期稳定运行的有力保障,传统内检测方法只能检测出管道已经产生的腐蚀和缺陷,无法检测出应力集中区域。为此,应用弱磁检测理论,基于数据采集系统、传感器及采集定位系统、变形检测系统、视觉检测系统、机械结构等的设计,完成了管道弱磁内检测装置的设计制造。该装置利用自主爬行装置,携带弱磁检测视觉记录装置,将变形检测、弱磁检测、视觉分析检测3种检测方法相结合,可以准确检测出新投产管道的缺陷应力集中区域,针对管道打压前后的变化状况,实现对新建管道事故的提前预防。

Stress detection is a powerful means to guarantee the long-term stable operation for a new pipeline. Traditional detection methods can only detect corrosion and defects that have generated in the pipeline, but not stress concentration area. Therefore, according to the weak magnetic detection theory, the weak magnetic inline inspection device for pipeline is designed and manufactured, on the basis of data acquisition system, sensors and acquisition positioning system, deformation detection system, visual inspection system and mechanical structure. Using autonomous crawling device, and carrying weak magnetic detection visual recording device, the weak magnetic inline inspection device combines three detection methods of deformation detection, weak magnetic detection and visual analysis detection. It can accurately detect the defects stress concentration points of the new pipeline, and prevent the pipeline from incidents in light of the changes before and after the pipeline boosting.