电加热器在超超临界机组轴封系统中的应用

Application of Electric Heater in Gland Steam System of Ultra-supercritical Unit

通过对轴封系统进行优化,在高温需求的轴封处增加电加热组件,整个轴封系统提供3种不同的温度,对高压缸前轴封和中压缸前轴封、高压缸后轴封和中压缸后轴封、低压缸轴封进行独立的温度匹配,彻底解决了温度不匹配问题,提高了机组的运行可靠性与安全性。

This article optimizes the gland steam system and adds electric heating components to the shaft seals that require high temperature.The whole gland steam system provides three different temperatures.The front shaft seal of the high pressure cylinder,the front shaft seal of the medium pressure cylinder,and the rear shaft of the high pressure cylinder.The seals are independently temperature-matched with the medium-pressure cylinder rear shaft seal and the low-pressure cylinder shaft seal,completely solving the problem of temperature mismatch,improving the unit's operational reliability and safety.