摘要
蒸汽发生器属于核电厂的核一级设备,每次停堆大修都需要打开眼孔盖板,更换密封垫片。在调试期间首次打开眼孔检查时,发现1#蒸汽发生器有2个眼孔中3个螺纹孔有一定程度的损伤。经过反复比较各种修复方案,最终通过使用磁座钻与自行设计的工装完成螺纹孔的扩孔,并安装螺纹丝套。修复完成后3个孔的螺纹垂直度、位置度均符合设计要求,螺纹孔修复结果满意。该修复工作的成功核电领域的重要机械设备螺纹孔修复提供了很好的指导和借鉴。
Steam generators belonging to the nuclear level of equipment for nuclear power plants,each shutdown overhaul will need to open the eyelet cap Board,replace the gasket? when you first open the eyelet check during debugging,found 1 # steam generator has two eyelets in the three threaded holes have a certain degree of damage.After repeated comparison of the Rehabilitation Programme,the final fixture designedby using magnetic drill and complete the threaded hole reaming and install thethreaded wire sets.After the repair is complete 3 holes thread of perpendicularity,position,degrees are inline with design requirements,repairing threaded hole with satisfactory results.Machinery important field of nuclear power screw holes successfully repair the repair work provides a good guide and reference.
引文
[1]郭宏宇.蒸汽发生器眼孔密封面修复研究[J].中国核电,2009.9:238-243.
[2]陈灵强.较大直径内螺纹孔的加工方法探讨[J].机械工程师.2012(02):123
[3]FQS-420600-TC1-A蒸汽发生器设计图册[S].