基于凝结水深度降压运行的给水泵密封水系统优化改造实践  

Optimal Reformation of Sealing Water System of Feed Water Pump Based on Depth Depressed Operation of Condensed Water

作　　者：刘安仓 林楚伟 江永 LIU Ancang;LIN Chuwei;JIANG Yong(Huaneng Southern Branch,Guangzhou 510620,Guangzhou province,China;Haimen Power Plant of Huaneng(Guangdong)Energy Development Co.,Ltd.,Shantou 515132,Guangzhou province,China)

机构地区：[1]华能南方分公司,广东广州510620 [2]华能(广东)能源开发有限公司海门电厂,广东汕头515132

出　　处：《电力与能源》2021年第4期465-466,496,共3页Power & Energy

摘　　要：凝结水系统深度降压运行时,容易导致给水泵密封水压力不足,影响给水泵的正常运行。针对给水泵密封水压不足的问题,通过在凝结水压力母管与节流孔板之间设置有3条调节管路,调节管路的供水端与节流孔板的进口端相连接,经节流孔板和温度调节阀与给水泵组密封系统连接向给水泵组供应密封水,使得在机组负荷和凝结水系统变化时,保持密封水供应压力,连续稳定地供应足够的密封水流量,使得整个给水泵组运行有更好的稳定性和更高的效率。When the condensate water system is in deep depressurization operation,it is easy to cause insufficient water pressure of the feed water pump seal,which will affect the normal operation of the feed water pump seal,The water supply end of the regulating pipe is connected with the inlet end of the throttle orifice plate,and the sealing water is supplied to the water pump group through the connection between the throttle orifice plate and the temperature regulating valve and the sealing system of the water feed pump group,In this way,when the load of the unit and the condensate system change,the sealing water supply pressure is maintained,and enough sealing water flow is continuously and stably supplied,so that the whole feed water pump group runs with better stability and higher efficiency.

关 键 词：给水泵 密封水 系统优化 凝结水 深度降压 

分 类 号：TM621[电气工程—电力系统及自动化]