由于担心再热管道抽汽预留管段,过长的“死管”会产生凝结水回流损伤母管的问题,结合今后生产需要,自行设计安装了疏水系统和温度测点。通过实际运行中不同状态下测得的温度变化数据的分析和研究,最终证实了此猜测,而预先安装的疏水系统很好的防止了由于凝结水引起的疲劳损坏的问题。最终总结介绍了对此类问题的三种处理方法。 Due to the fear of reheat pipe extraction steam reserved pipe, too long “dead tube ” will have the problem of condensate backflow damage mother pipe, combined with future production needs, to design and install their own hydrophobic system and temperature measuring point. Through the actual operation of the measured temperature changes in different state data analysis and study finally confirmed this speculation, while the pre-installed hydrophobic system is well protected due to condensation caused by the problem of fatigue damage. In the end, we summarize the three ways of dealing with these problems.