摘要
笔者公司两台350 MW超临界机组,每台机组轴封加热器都是单级水封设计,根据以往其他机组的运行经验,目前国内设计轴加疏水水封不论是单级还是多级水封均存在运行不稳定问题,多级水封运行中易发生水封破坏现象,导致轴封冷却器的无水位运行,从而降低机组真空,严重影响机组安全、经济运行。
our company two 350 MW supercritical unit,heater per unit are single stage seal design,according to the operation experiences of other previous units, the current domestic design of shaft and hydrophobic seal whether single level or multilevel water seal are unstable operationproblem,seal failure is liable to occur in the operation of multilevel water seal,cause no waterrunning seal cooler,thereby reducing the vacuum of unit,seriously affecting the unit safety,economic operation.
出处
《科技创新导报》
2016年第8期71-72,共2页
Science and Technology Innovation Herald
关键词
火电厂
凝汽式机组
轴封加热器
单级水封
疏水中断
真空
Thermal power plant
Condensing steam turbine
Shaft seal
Water seal
Heater
Single stage
Hydrophobic interrupt
