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介绍了17″(426)高清晰度管道漏磁检测器的机械结构和性能指标,指出通过能力是其机械性能的重要指标。以该检测器在陕西某天然气管网内检测工程和东北某天然气管网内检测工程的实际应用为例,总结了其存在的问题:支撑力不足,皮碗磨损严重,检测器易停球等。据此,提出了改进措施:使用刚度更大的压簧增加第1排支撑轮的支撑力,但使用效果不佳;采用环形钢刷或类似支撑作为电池驱动节的支撑系统,可使检测器的运行状态远远优于采用支撑轮作为支撑的情况;改变皮碗形状,使用支撑力更强的皮碗结构,或通过增加直皮碗的方式增强支撑力,是最简便而直接的方法,取得了较好的应用效果。
The mechanical structure and performance index of 17 "(426) high definition pipeline magnetic flux leakage detector are introduced, and the passing capability is an important index of its mechanical performance.With this detector in a certain natural gas pipeline network in Shaanxi Province and a certain northeast The actual application of gas pipeline inspection engineering as an example, summing up the existing problems: lack of supporting force, serious abrasion of the cup and easy stopping of the detector, etc.Accordingly, the improvement measures are proposed: the use of a more rigid compression spring Increase the support force of the first row of support wheels, but the use of ineffective; the use of circular steel brushes or similar support as a battery-driven section of the support system, the detector can run much better than the use of support wheels as support; Change the shape of the cup, the use of more supportive structure of the cup, or by increasing the straight cup way to enhance the support force, is the most simple and direct method, and achieved good results.