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针对油管存在损伤而缺乏有效检测和评判手段的现实 ,研究了杆状磨损缺陷的建模方法和杆状磨损缺陷的定量检测方法。根据杆状磨损缺陷的特点 ,建立了杆状磨损缺陷的槽深与被磨损的油管截面积之间关系的数学模型。采用漏磁通法对杆状磨损缺陷进行定量检测 ,给出了霍尔传感器的输出电压与被测油管的剩余平均截面积之间关系的线性化数学模型。大量的实验室测试结果和工业现场试验结果表明 ,基于漏磁通法的检测系统可实现杆状磨损缺陷的定量检测 ,检测系统对杆状磨损缺陷的定性检出率为 10 0 % ,杆状磨损缺陷的槽深定量检测精度为 0 5mm。
In view of the fact that there is no effective test and judgment means for the tubing damage, the method of modeling the rod-shaped wear defect and the quantitative detection method of the rod-shaped wear defect are studied. According to the characteristics of the rod-shaped wear defect, a mathematical model of the relationship between the groove depth of the rod-shaped wear defect and the cross-sectional area of the tubing being worn is established. Leakage flux method is used to quantitatively detect the rod-shaped wear defects, and the linearized mathematical model of the relationship between the output voltage of the Hall sensor and the remaining average cross-sectional area of the tested tubing is given. A large number of laboratory test results and industrial field test results show that the detection system based on the leakage flux method can achieve the quantitative detection of the rod-shaped wear defect. The detection rate of the detection system to the rod-shaped wear defect is 10% Abrasion defect groove depth quantitative detection accuracy of 0 5mm.