反应堆吊篮曲面水下精密测量技术

Precision Measurement Underwater Technology for Curved Surface of Reactor Lower Internals

核反应堆吊篮(下部堆内构件)筒体上安装的部件在产生缺陷需进行更换时,须对其筒体曲面进行精确测量。通过对某核电厂吊篮筒体外侧辐照监督管安装曲面进行水下精密测量技术开发及时实施过程进行分析,结果证明,采用高精度数字探规、光栅尺位移传感器和定向运动滚珠导轨的组合测量装置,可实现在高辐照条件下进行空间曲面水下精密测量。

Once defects oceurrs on the components installed on the nuclear reactor basket （lower internals）, which requires repair, the curved surface for installation shall be accurately measured firstly. By analysis of the precise measurement technology and implementation process for the installation curved surface on the barrel for irradiation surveillance capsule support , structures, it proved that the solution can achieve the purpose for space curved surface precise measurement underwater at high radiation conditions by the combined measuring device with high precision digital gauge, grating sensor and directional movement of the ball guide rail.