核电站压力容器接管安全端焊缝缺陷的超声自动检测系统

Automatic ultrasonic inspection system of weld defect for nuclear power plant pressure vessel nozzle safe ends

研制了一套核电站压力容器接管安全端焊缝缺陷超声波自动水下检测机器人,并对系统的机械本体、气路设计、电气控制等组成部分展开研究。阐述了检测装置各个执行部件的设计原理和设计方法。优化气路设计并实现了定位力断气保持、探头恒力压紧和校验试块伸缩等复合功能。该系统通过控制系统向执行机构发送指令并接收反馈信号,实现了焊缝缺陷的自动扫查。

An ultrasonic automatic inspection robot for nuclear power plant pressure vessel nozzle safe ends was developed and its various components,including mechanical structure,gas circuit design,electronic control and so on were researched.The design principle and design method of implement configurations belonging to the inspection equipment were described.Through optimizing the pneumatic design,the inspection equipment is able to realize several functions,including fix position force maintaining while gas input being break,probes pressing weld with a constant force,and the calibration of test block extension.Control system sends signals to performing machine and receives feedback signals from sensors,and realizes automatic scan at last.