基于CEL方法的管道内检测器过弯机理分析  

Analysis of Over-bending Mechanism of Pipeline Inner Detector based on CEL Method

作　　者：吴昱达 郑莉[1] 陈新汉 刘洋[1] 柴泽 李涛屹 WU Yuda;ZHENG Li;CHEN Xinhan;LIU Yang;CHAI Ze;LI Taoyi(Beijing Huahang Institute of Radio Measurement,Beijing 100013,China;College of Mechanical and Traansportation Engineering,China University of Petroleum,Beijing 100100,China)

机构地区：[1]北京华航无线电测量研究所,北京100013 [2]中国石油大学机械与储运工程学院,北京100100

出　　处：《焊管》2022年第10期18-23,29,共7页Welded Pipe and Tube

摘　　要：针对管道内检测器在管道内运行的通过性问题,采用耦合欧拉-拉格朗日(CEL)方法,建立了管道内检测器运行的流-固耦合有限元模型,同时采用Mooney-RivLin模型描述皮碗超弹性、非线性行为。研究了双舱段管道内检测器通过弯管道时的复杂力学行为,探索了管道内检测器通过性的动力学响应规律。分析了双节管道内检测器在曲率半径1.5D及3D弯管内的运行情况,同时分析了双舱段管道检测器在管道运行过程中,万向节长度对检测器管内运行角度的影响规律。结果表明:随着万向节设计长度的增加,检测器的轴线夹角最大值呈现先增大后减小的趋势;且在运行过程中,检测器通过的管道曲率越小,万向节角度波动峰值越大,波动的变化率越大。因此,合理设计万向节长度,对检测器运行状态以及检测设备的稳定性具有重要的影响。In order to study the passability of the detector running in the pipeline, the coupled Euler-Lagrange(CEL) method is used to establish the fluid-solid coupled finite element model of the detector running in the pipeline, and the Mooney-Rivlin model is used to describe the hyperelastic and nonlinear behavior of the sealing cups. The complex mechanical behavior of the pipeline detector with double cabins is studied, and the resulting dynamic response regularity is also explored when passing through the curved pipeline. The operation of the detector in the double cabins pipe in 1.5D and 3D curved pipe is analyzed,and the influence rule of the length of universal joint on the Angle change of the detector in the pipe operation is revealed. The results show that the maximum axial intersection angle of the detector increases first and then decreases with the increase of the design length of the universal joint. In the process of operation, the smaller the curvature of the pipe passed by the detector, the larger the peak value of the angular universal joint angle fluctuation and the higher the change rate of the fluctuation.Reasonable design of the length of the universal joint has an important influence on the running state of the detector and the stability of the detection equipment.

关 键 词：管道内检测器 数值模拟 CEL方法 流固耦合 Mooney-RivLin模型 

分 类 号：TE973.6[石油与天然气工程—石油机械设备]