油气管道内检测器探头机构压缩姿态分析
Compression Posture Analysis of Probe for Pipeline Inspection Gauge in Oil and Gas Pipeline

目前国内外油气管道内检测器探头机构的设计主要采用试制的方法，所以合理的探头机构设计至关重要。本文运用有限元分析软件ANSYS Workbench建立了油气管道内检测器探头机构的有限元模型，对该模型进行了静力分析，结果表明随着探头机构压缩量的增加，支撑弹簧变形严重使探头机构姿态不稳，经试验验证，分析结果与测试结果基本一致，证明了有限元分析结果的正确性。为改善探头压缩姿态，对弹簧支撑结构进行了改进，并利用ANSYS Workbench对压缩姿态进行了分析，证明改进的探头机构具有良好的压缩姿态。
At present, the design of the detector probe mechanism in oil and gas pipelines at home and abroad mainly adopts the method of trial production, so a reasonable probe mechanism design is very important. This paper used finite element model of probe mechanism for the pipeline inspection gauge in oil and gas pipeline was established using the finite element analysis software ANSYS Workbench. Static analysis of the model was carried out. The results show that with the increase of the probe mechanism compression, the deformation of the support spring was serious which made the posture of the probe mechanism unstable. Based on the test results, correctness of the finite element analysis results was proved. In order to improve compression posture of the probe, the spring support structure was improved, and compression posture was analyzed by using ANSYS Workbench. It was proved that the improved probe mechanism had a good compression posture.