燃料棒氧化膜厚度测量系统关键技术研究  

Research on Key Technology of Fuel Rod Oxide Film Thickness Measurement System

作　　者：肖湘 高三杰[2] 高光勇 文俊浩[3] 蒋维宇 Xiao Xiang;Gao Sanjie;Gao Guangyong;Wen Junhao;Jiang Weiyu(SWS Hemodialysis Care Co.,Ltd.,Chongqing,401123,China;Nuclear Power Institute of China,Chengdu,610213,China;College of Computer Science,Chongqing University,Chongqing,400044,China)

机构地区：[1]重庆山外山血液净化技术股份有限公司,重庆401123 [2]中国核动力研究设计院,成都610213 [3]重庆大学计算机学院,重庆400044

出　　处：《核动力工程》2023年第6期237-241,共5页Nuclear Power Engineering

摘　　要：核反应堆燃料组件长期服役过程中,锆合金与高温水作用会产生氧化形成一层氧化膜,由于膜层较薄,测量精度需要达到±5μm,测量精度的高要求为氧化膜厚度测量系统的研发带来难度。为此,本文在涡流提离效应的基础上研制了一套燃料棒氧化膜厚度测量系统,讨论了测量系统中的关键技术,同时对涡流提离效应的电磁场进行仿真。测试结果表明,该测量系统测量精度高、稳定可靠,可实现在役燃料棒氧化膜的厚度测量。During the long-term service of nuclear reactor fuel assembly,zirconium alloy reacts with high-temperature water to form an oxide film.The measurement precision needs to reach±5μm due to the thin film.The high requirement of measurement precision brings difficulties to the development of the oxide film thickness measurement system.Therefore,based on the eddy current lift-off effect,a fuel rod oxide film thickness measurement system is developed in this paper.The key technology in the system is discussed,and the electromagnetic field of eddy current lift-off effect is simulated.The test results show that the measurement system has high precision,stability and reliability,and can measure the thickness of oxide film of in-service fuel rods.

关 键 词：涡流 氧化膜 测量系统 

分 类 号：TH878[机械工程—仪器科学与技术] TL352.28[机械工程—精密仪器及机械]