U型水封筒改造对真空严密性的影响  

Influence of U-shaped Water Sealing Tube Renovation on Vacuum Tightness

作　　者：陆杰[1] LU Jie(Shanghai Electric Power Construction Startup Adjustment Testing Institute,Shanghai 200031,China)

机构地区：[1]上海电力建设启动调整试验所,上海200031

出　　处：《电力与能源》2018年第4期576-577,共2页Power & Energy

摘　　要：U型水封筒在真空较好的情况下,会存在导致水封的压差小于凝汽器的真空值而出现泄漏真空现象,致使U型多级水封的严密性无法达到要求。分析了U型水封筒的应用现状以及在运行中存在的问题,通过对U型水封筒进行改造,提高了系统的真空严密性。In the case of good vacuum,the leakage vacuum will occur because the pressure difference of water seal is smaller than the vacuum value of condenser,so that the tightness of U-shaped multi-stage water seal cannot meet the requirements. This paper analyzes the application of U-shaped water seal tube and its problems in operation,and improves the vacuum tightness of the system by reforming U-shaped water seal tube.

关 键 词：U型水封改造 真空严密性 1 000 MW发电机组 

分 类 号：TM621[电气工程—电力系统及自动化]