核电站放射性容器维修水下遥控焊接研究  

Application of Remotely Operated Underwater Welding Technologies in Repair of Nuclear Power Stations Radiational Containers

作　　者：周灿丰[1] 焦向东[1] 高辉[1] 朱加雷[1] 沈秋平[2] 余燕[2] 张俊宝[2] 

机构地区：[1]北京石油化工学院海洋工程连接技术研究中心,北京102617 [2]上海核工程研究设计院,上海200233

出　　处：《上海交通大学学报》2010年第S1期85-88,共4页Journal of Shanghai Jiaotong University

基　　金：国防科工委项目(5K210);国家自然科学基金项目(40776054);北京市属高等学校人才强教计划资助项目(PHR201007134);北京市属高等学校人才强教计划资助项目(PHR20090519);北京市自然科学基金资助项目(3102012)

摘　　要：研究了用于核电厂检修的水下局部干式MIG全自动焊,设计建造了水下焊接试验装置,研制了水下遥控焊接设备,研究了不锈钢水下焊接工艺.水下焊接试验装置为立式压力容器,可以模拟30 m水深环境,舱门操作采用液压驱动,舱内布置了3套摄像系统,分别监视舱内场景、焊接设备和焊接过程.水下遥控焊接设备为液压伺服阀控制的运动滑台,可以实现焊接行走、摆动和高低调节,通过往包裹焊枪的局部排水气罩内部充入氩气,形成局部干式空间并保护焊接熔池.对304不锈钢进行了15 m水深的水下焊接试验,焊接试件无损探伤和力学性能合格.An innovative automated underwater local dry MIG welding was developed to take the place of underwater welders in nuclear power plants repair.An underwater welding test chamber was built to simulate 30 meters water depth,which is a large vertical pressure vessel with a hydraulic driven cover and three viewing systems,capable of obtaining images from surface,welding arc and underwater.Remotely operated underwater welding equipment is a three-dimensional platform,also driven by hydraulic servo valves,to realize travelling,oscillation,and vertical adjustment needed by welding.Argon is transferred into the shielding cup,to drive water from the cup bottom and build a local dry space around the welding gun.Welding test of 304 stainless steel under 15 meters water depth was conducted,and perfect NDT and mechanical test results were obtained.

关 键 词：核电站放射性容器 维修 水下焊接试验舱 水下遥控焊接设备 局部干式脉冲熔化极惰性气体保护焊 

分 类 号：TG456.5[金属学及工艺—焊接]