300 MW亚临界汽轮机快速结垢原因分析及处理  

Analysis and treatment for fast scaling in 300 MW subcritical steam turbine

作　　者：贤建伟 代术建 XIAN Jianwei;DAI Shujian(Shanghai Electric Power Generation Group, Shanghai 201199, China)

机构地区：[1]上海电气电站工程公司,上海201199

出　　处：《华电技术》2019年第5期78-80,共3页HUADIAN TECHNOLOGY

摘　　要：某台300 MW亚临界汽轮机因热井电动放水阀误操作导致凝汽器地坑积水被吸入凝结水系统,蒸汽品质恶化,汽轮机通流部分急剧严重结垢,影响机组出力。通过除盐水清洗、喷砂处理等方法,有效去除了汽轮机盐垢,确保了机组安全、经济、稳定运行。Accumulated water of a 300 MW steam turbine was sucked into condensate system by maloperation of the electric drain valve of the hot well,which deteriorated the steam quality,caused serious scaling in the flow passage of the steam turbine and affected the output of the unit. By means of desalinated water cleaning and sand blasting treatment,the salt scale of steam turbine can be effectively removed. The safe,economic and stable operation of the unit can be ensured.

关 键 词：亚临界机组 汽轮机 快速结垢 电动放水阀 凝汽器 除盐水 喷砂处理 

分 类 号：TM621.8[电气工程—电力系统及自动化]