锆合金包壳氧化膜厚度涡流检测探头仿真优化与设计  

Simulation optimization and design of eddy current detection probe for the oxidation film thickness of zirconium alloy shell

作　　者：刘永生[1] 葛玖浩 蒋维宇 马旭东 邓志勇 高三杰[3] 李宏玉 LIU Yongsheng;GE Jiuhao;JIANG Weiyu;MA Xudong;DENG Zhiyong;GAO Sanjie;LI Hongyu(Jiangsu Nuclear Power Corporation,Lianyungang 222000,China;Automation College,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China;Nuclear Power Institute of China,Chengdu 610213,China)

机构地区：[1]江苏核电有限公司,连云港222000 [2]南京航空航天大学自动化学院,南京211106 [3]中国核动力研究设计院,成都610213

出　　处：《无损检测》2025年第1期40-46,共7页Nondestructive Testing

摘　　要：核燃料组件长期在高放射性、高温深水等极端恶劣的环境下运行,燃料棒表面极易产生氧化膜,从而影响燃料组件的运行。因此,获取燃料棒上氧化膜数据,可为分析燃料腐蚀性能和堆内运行状态提供数据支撑。利用COMSOL软件建立锆合金表面氧化膜厚度检测仿真模型,对所设计探头的整体结构尺寸参数和激励参数进行了优化分析,对其线圈阻抗幅值和相位变化与各影响因素之间的对应关系进行了分析。仿真结果表明,线圈参数按对检测灵敏度的影响程度排列,从高到低依次为:匝数、中径、高度和宽度。利用仿真结果设计制作了一种新型的氧化膜测厚探头,利用氧化膜测量系统开展锆合金板表面非金属膜片测试试验,试验结果表明,该氧化膜探头检测精度较高,测量偏差小于5μm。Nuclear fuel components are running in extremely harsh environments such as high radioactive,high temperature and deep water for a long time,and it is easy to produce oxide films on the surface of the fuel rod,which affects the operation of fuel components.Therefore,obtaining the oxide film data on the fuel rod can provide data support for analyzing fuel corrosion performance and the operating status in the heap.The simulation model of the thickness detection of the oxide film on the surface of zirconium alloy surface was established using the COMSOL software.The overall structure size parameters and incentive parameters of the designed probe was optimized and analyzed,and the corresponding relationship between its coil impedance amplitude and phase changes and the influencing factors was analyzed.The simulation results showed that the impact of the detection sensitivity in the coil parameters from high to low was turning,middle diameter,height,and width.The simulation results were used to design a new type of oxide film measurement probe,the oxide film measurement system was used to carry out non-metallic membrane tests on the surface of zirconium alloy plate.The test results showed that the detection precision of the oxide film probe was high,and the measurement deviation was less than 5μm.

关 键 词：氧化膜厚度测量 探头几何参数 仿真分析 

分 类 号：TH878[机械工程—仪器科学与技术] TG115.28[机械工程—精密仪器及机械]