摘要
针对天然气管道漏磁检测装置运行状态是影响检测结果准确性的重要因素,研究了漏磁检测装置不同运动状态下缺陷漏磁信号与检测装置运行速度的关系。应用有限元方法仿真分析了运动引起的电流密度变化和磁化水平变化对漏磁场的影响;并通过实验验证了仿真计算的准确性。实验结果表明：有效检测漏磁信号的检测装置运行速度范围为0~6 m/s。
Natural gas pipeline magnetic flux leakage（MFL） testing device operation is an important impact factor of test results in accuracy.The relationship of MFL signals and detection device running speed was studied under a different state of motion.By the finite element method application,the influence of current density and magnetic field levels changes on the MFL field was simulated and experimental results verify the accuracy of the simulation.Experimental results show that detection device operating speed range is 0~6 m/s,in which MFL signals are effectively detected.
出处
《化工自动化及仪表》
CAS
北大核心
2010年第5期57-59,共3页
Control and Instruments in Chemical Industry
基金
国家自然科学基金项目仪表专项基金资助项目(60927004)
关键词
天然气管道
缺陷漏磁信号
运行速度
有限元仿真
现场试验
natural gas pipeline
defect MFL signals
running speed
finite element simulation
field test
