交流电磁场应力测量法在管道应力内检测中的应用
Application of AC electromagnetic field stress measurement method in the stress detection of pipelines
段金尧 1钟婷 1赵一桦 2王亚楠 1李睿 1富宽1
作者信息
- 1. 国家管网集团科学技术研究总院分公司,河北廊坊 065000
- 2. 长庆油田分公司第一采气厂 第五净化厂,西安 710021
- 折叠
摘要
为解决管道本体应力集中区域的内检测问题,以交流电磁场应力测量法(ACSM)为依据,利用COMSOL Multiphysics有限元仿真建立石油管道电磁场二维仿真模型,分析管道表面磁场分布规律,研究ACSM法应力测量传感器结构和工艺参数对测量结果的影响.研制基于ACSM法的应力测量传感器,设计开发管道应力内检测系统,开展了静载拉伸应力测量试验研究以及现场牵拉试验.仿真模拟结果与应力测量传感器的实际测量结果相吻合,在被测试件弹性限度内,随着施加应力的增加,传感器的测量幅值呈正比增长态势;现场牵拉试验过程中,传感器幅值大小与施加应力大小存在较好的映射关系,对被检管道施加105 MPa应力时,传感器的差值电压幅值可达259 mV,整套系统在应力测量试验中运行良好,可有效识别应力集中区域.
Abstract
In order to solve the problem of internal detection in the stress concentration area of pipeline body,the COMSOL Multiphysics finite element simulation was utilized to establish a two-dimensional simulation model of the electromagnetic field in oil pipelines based on AC electromagnetic field stress measurement(ACSM).The analysis focused on distribution law on the pipeline surface and investigated the impact of ACSM stress measurement sensor structure and process parameters on measurement results.A stress measuring sensor based on ACSM method was developed,along with the design and development of an internal stress detection system for pipelines.Subsequently,static load tensile stress measurement test and field pull test were conducted.It is found that the simulation results are consistent with actual measurements obtained from the stress measuring sensor.Within the elastic limit of the tested part,there is a tendency of proportional increase in sensor measurement amplitude as the applied stress increases.There is a good mapping relationship between the sensor amplitude and the applied stress in the field tensile test.When 105 MPa stress is applied to the pipeline under test,the difference voltage amplitude of the sensor can reach 259 mV.The whole system works well in the stress measurement test and can effectively identify the stress concentration area.
关键词
管道/应力测量/交流电磁场应力测量法/电磁场仿真Key words
pipe/stress measurement/AC electromagnetic field stress measurement method/electromagnetic field simulation引用本文复制引用
基金项目
国家重点研发计划项目(2022YFB3207600)
国家管网集团公司科技重大专项(WZXGL202104)
出版年
2024
国家科技期刊平台
NSTL
万方数据