核燃料棒堵孔焊接图像系统设计

Image System Designed for Plugging Holes Welding of Nuclear Fuel Rods [JZ)][HS)]

摘要:

针对以往核燃料棒密封焊接时无法精细调整钨极距离、实时观测焊室内部情况以及保存焊接图像的弊端,设计了一套基于LABVIEW的核燃料棒焊接图像采集与处理系统；不同于传统的投影方法,系统利用两个数字相机获取焊室内部图像及焊接过程视频,通过图像处理分析钨极尖端与核燃料棒端塞的极距、对中情况和烧损程度等,并将焊接前后图像、极距保存到棒料焊接的相应记录中；多次焊接试验表明,图像系统能够稳定清晰地获取焊室内的图像,极距和对中情况分析准确可靠；根据实验结果,总结了钨极烧损的外观特点,并探讨了适合本焊接设备的极距。

Abstract:

In the past, the tungsten distance couldn’t be precisely measured during the sealing welding process of nuclear fuel rods and real-time observation of internal welding chamber as well as to save the welding images were also unrealized. To solve that, an image acquisition and processing system based on LabVIEW for the plugging holes welding is designed. Unlike traditional projection methods, the system includes two digital cameras to obtain the internal images of the chamber and welding videos. Then analysis the relative position between tungsten and the nuclear fuel rod end plug. And then save the analysis results and the images to the corresponding record. Welding experiments show that the image system can obtain high quality internal image and work stably, and the analysis is accuracy and reliable; According to the experiments results, summarized the suitable tungsten distance.