轴封送汽温度对机组启停的影响

Influence of Shaft Sealing Steam Temperature on Unit Startup and Shutdown

轴封系统作为汽轮机的重要辅助系统之一,主要作用是在汽轮机启动、运行、停机工况下,为轴封密封提供汽源,以及引导并回收轴封及阀杆漏汽,防止高温高压蒸汽外漏或空气漏入汽轮机,影响机组真空。本文主要介绍轴封送汽温度对机组启动和停机的影响。

As one of the important auxiliary systems of the steam turbine,the shaft seal system is mainly used to provide steam source for the shaft seal and recover the steam leakage of the shaft seal and valve under the conditions of steam turbine startup,running and shutdown,so as to prevent the leakage of high temperature and high pressure steam or air into the steam turbine,and affect the vacuum of the unit.This paper mainly introduces the influence of shaft sealing steam temperature on unit startup and shutdown.