关键词: 储罐, 混合励磁, 漏磁源, 耦合, 实验研究

Abstract: Magnetic flux leakage detection has been widely applied in the tank bottom testing because of its advantages of high sensitivity,low cost,simple operation and so on. New hybrid excitation magnetization parts are designed with the combined effect of permanent magnet and electromagnetic coil. ANSYS software is adopted to analyze the excitation source coupling of simulation model based on defect leakage magnetic field distribution.This paper analyzes the impacts of excitation source parameters and detection object parameters on the leakage magnetic field distribution of defects. It determines the relationship between the base plate thickness and saturated ampere turns. Experimental device is set up to carry out a series of experimental researches. The paper analyzes and compares the experiment data. It verifies the correctness of limited element analysis results. This provides certain theoretical basis for the quantitative analysis on defects and instrument design of tank bottom magnetic flux leakage testing based on hybrid excitation.

Key words: Home｜Journal Papers｜About CNKI｜User Service｜FAQ｜Contact Us｜中文《Petrochemical Safety and Environmental Protection Technology》 2017-05Add to Favorite Get Latest Update ANALYSIS ON EXCITATION SOURCE COUPLING AND EXPERIMENTAL STUDY ON MAGNETIC FLUX LEAKAGE DET