“华龙一号”凝汽器结构优化分析及可靠性管理研究

HPR1000 Condenser Structure Optimal Analysis and Reliability Management Research

钛管泄漏(凝结水水质)直接影响机组二回路水质和运行安全可靠性。通过对某核电厂参考电站凝汽器钛管泄漏的原因分析,对“华龙一号”凝汽器从管板间距、钛管与支撑板配合间隙、迎流面厚壁管布置、喉部布置、旁扩布置及减压布置、管束布置等结构改进与参考电站进行了对比说明和核算,结果表明,该结构能够有效避免因振动问题导致的大面积钛管泄漏,并根据AP-913的理念及相关机组凝汽器可靠性管理现状提出了“华龙一号”凝汽器预防性管理思路和建议。

Leakage from titanium pipe(condensate water quality)directly affects the water quality of the secondary loop and operation safety.This thesis analysis the reason of the reference station condenser titanium pipe leakage.Based on the structure improvement of space between pipe and plate,fitting space between titanium pipe and supporting plate,arrangement of thick wall pipe on the inflow face,throat arrangement,expansion and decompression arrangement,tube bundle arrangement,this thesis compare HPR1000 condenser with the reference station condenser,the result indicate that structure of HPR1000 condenser can effectively avoid large area titanium pipe leakage which caused by vibration peoblem.This thesis also learned from AP-913 idea and the status of preventive management in the station condenser,it raises the preventive management idea and advice to the HPR1000.