基于老化降质的自然循环蒸汽发生器改进设计研究  

Study on Design Improvements of Recirculation SG Based on Ageing Degradations

作　　者：李鹏飞[1] 余平[1] 王海松[1] 成翔[1] 李焕鸣[1] 黄伟[1] 沈云海[1] 

机构地区：[1]中国核动力研究设计院核反应堆系统设计技术重点实验室,成都610041

出　　处：《核动力工程》2016年第5期115-118,共4页Nuclear Power Engineering

摘　　要：基于自然循环蒸汽发生器传热管的各种老化降质机理,对蒸汽发生器的改进设计进行了分析研究。研究结果表明,通过选择I-690TT作为传热管材料、加装排污装置、采用三叶或四叶梅花孔型管束支承板、在U型弯头区加装V型防振条结构以及给水采用全挥发处理等措施,可有效避免或缓解自然循环蒸汽发生器常见的各种老化降质。Design improvements of recirculation SG is discussed based on different ageing degradation mechanisms around the heat transfer tube. The results indicate that the design improvement measurements, such as taking I-690 TT as the heat transfer tube materials, installing the blow down components, supporting the plate with broached quatrefoil or broached trefoil structures, installing V type anti vibration bar at U bend, and conducting all volatile treatment for feed water, can effectively avoid or mitigate the general ageing degradations for the recirculation SG.

关 键 词：老化降质 自然循环蒸汽发生器 结构设计 传热管 

分 类 号：TL353.13[核科学技术—核技术及应用]