大气式除氧器的水封溢流管在保证内部与外部正常隔离外,尚有两个作用:1.当除氧器水位过高时,可以从水封管自动溢水;2.当除氧器超过额定压力时,水封管起安全门的作用,将U形管中的水排到疏水箱,高压蒸汽从U形管迅速排出。水封管作为安全装置远比安全阀可靠。 Atmospheric deaerator seal overflow pipe to ensure the normal internal and external isolation, there are two functions: 1. When the deaerator water level is too high, you can automatically overflow from the water seal pipe; 2. When the oxygen When the pressure exceeds the rated pressure, the water seal tube acts as a safety gate to drain the water in the U-shaped tube to the water tank and the high-pressure steam is rapidly discharged from the U-shaped tube. Water seal pipe as a safety device than the safety valve reliable.