摘要
蒸汽发生器传热管二次侧腐蚀产物沉积到一定程度,将引起材料腐蚀、运行水位震荡和传热性能降低等方面的问题。基于统计数据和行业经验,结合不同腐蚀产物治理措施的应用效果,建立了某CRP1000机组55/19B蒸汽发生器60 a寿命周期内沉积物厚度和热力性能的预测模型。结果表明:运行60 a后蒸汽发生器二次侧沉积物厚度将达到95μm,二次侧蒸汽压力将降低460 kPa。如不进行及时治理,将影响机组发电量。软化学清洗ASCA初次应用后,污垢热阻降低约4.54×10-6 m2·℃/W,对应主蒸汽压力升高约60 kPa;硬化学清洗SGCC应用后,污垢热阻值恢复到商运之初的清洁状态值。该模型可为我国CRP1000机组蒸汽发生器安全经济运行评估提供一定指导作用。
The corrosion products of CPR1000 units secondary circuit are deposited on the secondary side of steam generator(SG)tubes,which will cause safety and economic problems such as corrosion,water level oscillation and thermal performance degradation.Based on the historical statistical data and industry experience of CPR1000 units,combined with the application effect of different deposit treatment measures,a prediction model for deposit thickness and thermal performance of CPR1000 unit steam generator within the 60-year life cycle is established.The results show that deposit thickness on the steam generator secondary side will reach 95 mm after 60 years of operation,and the steam pressure on secondary side will be reduced by 460 kPa.After the first application of ASCA(advanced scale conditioning agent),the thermal resistance decreased by about 4.54×10-6 m2·℃/W,the corresponding steam pressure increases by 60 kPa.After the application of SGCC(steam generator chemical clean),the thermal resistance returns to the clean state value at the beginning of commercial operation.This model provides guidance for safe and economic operation of CPR1000 steam generators in China.
作者
陈杰
刘勇
赵清森
夏朋
彭伟頔
田付军
杨杰
CHEN Jie;LIU Yong;ZHAO Qingsen;XIA Peng;PENG Weidi;TIAN Fujun;YANG Jie(China Nuclear Power Operation Co.,Ltd.,Shenzhen 518000,Guangdong,China;Suzhou Nuclear Power Institute Co.,Ltd.,Suzhou 215004,Jiangsu,China)
出处
《能源研究与管理》
2023年第2期160-166,共7页
Energy Research and Management
基金
中广核集团首席专家科研专项资助项目(R-2021SZME05TF)。
关键词
蒸汽发生器
腐蚀产物厚度
热力性能
化学清洗
steam generator
deposit thickness
thermal performance
chemical cleaning
