压水堆燃料组件管座的X射线数字成像检测  

X-Ray Digital Imaging Inspection of PWR Fuel Assembly Nozzle

作　　者：张小刚 俞东宝[1] 汤慧[1] 朱永利 张洪伟[1] ZHANG Xiao-gang;YU Dong-bao;TANG Hui;ZHU Yong-li;ZHANG Hong-wei(China North Nuclear Fuel Co.,Ltd.,Baotou 014035,Inner Mongolia,China)

机构地区：[1]中核北方核燃料元件有限公司,内蒙古包头014035

出　　处：《铸造》2023年第10期1277-1283,共7页Foundry

摘　　要：通过开展管座三维CT成像射线检测技术研究,获得带人工气孔缺陷的管座三维结构。并利用三维结构图,借鉴X射线照相工艺开展二维DR成像的透照角度分析,模拟仿真特定角度下的DR透照图像,确定最佳DR透照角度和可能存在的检测盲区。通过模拟仿真所得最佳透照角度开展DR透照实验,确定最佳透照角度参数、最终的检测盲区和缺陷检出能力,对多方向DR检测方法的可行性进行验证,建立管座X射线数字成像快速检测方法,检测灵敏度可达Φ0.3mm。The three-dimensional structure of PWR nuclear fuel assembly nozzle was obtained through the research of three-dimensional CT imaging radiographic testing technology of nozzle.The three-dimensional structure diagram of the tube base obtained by three-dimensional CT imaging was used to carry out the simulation of the transillumination thickness of two-dimensional DR imaging,and the best DR transillumination angle and possible detection blind area were determined by combining with the X-ray radiography process.Through the best transillumination angle obtained by simulation,DR transillumination experiment was carried out to determine the best transillumination angle parameter,final detection blind area and defect detection ability.The feasibility of the multi-directional DR detection method was verified.The rapid detection method of tube socket X-ray digital imaging was established,with detection sensitivity up toΦ0.3mm.

关 键 词：压水堆 燃料组件管座 X射线检测 数字成像 三维成像 

分 类 号：TG115.22[金属学及工艺—物理冶金] TP391.41[金属学及工艺—金属学]