油气管道通径检测器重心偏移的误差修正算法  

Error correction algorithm barycenter offset of caliper tool of oil and gas pipelines

作　　者：李晓龙[1] 张仕民[1] 焦泉[1] 张康[1] 王昊[1] 

机构地区：[1]中国石油大学(北京)机械与储运工程学院,北京102249

出　　处：《油气储运》2015年第6期611-615,共5页Oil & Gas Storage and Transportation

摘　　要：通径检测器作为管道内检测必不可少的工具,在解决管道安全隐患问题上发挥着不可替代的作用。简述了油气管道通径检测器的检测原理,对其运行检测过程中由于振动和重力作用引起的重心偏移所造成的误差进行了分析,得出通径检测器在发生旋转以及重心偏移后的实际初始倾角以及实际初始高度值。通过对支撑皮碗进行力学分析,得出在实际运行过程中通径检测器在遭遇振动和重力作用下的重心偏移量。基于此,提出了一种重心偏移修正算法,对每一瞬时状态重心的偏移量进行修正,有效提高了通径检测器的检测精度,对通径检测器技术的研究和发展具有一定的指导意义。As an essential tool for pipeline in-line inspection, caliper tool plays an irreplaceable role in dealing with hazards in pipeline. This paper firstly describes the work principle of the caliper tool, and then analyzes the possible errors caused by barycenter offset which is induced due to the vibration and gravity force in the process of testing. The actual initial angle and height are obtained for the caliper tool after it suffers from rotation and barycenter offset. Through mechanical analysis of the supporting cup, such offset in actual operation is obtained. A correction algorithm for barycenter offset is put forward to correct the offset in each instantaneous state, which effectively improves the precision of the caliper tool. This paper has a certain guiding significance for the research and development of the caliper tool technology.

关 键 词：管道 通径检测器 重心偏移 修正算法 

分 类 号：TE88[石油与天然气工程—油气储运工程]