高压蒸汽吹扫工况的参数选取

Parameter Selection for High Pressure Steam Purging Condition

管线吹扫是开车前的重要工作,尤其是对于一些操作工况温度高、压力高的管线,还需用高压蒸汽对管道进行吹扫,比如汽轮机的蒸汽管线,此外还需设计临时吹扫管线才能达到管线的吹扫要求。但是设计人员基本不会考虑吹扫工况的设计,也不对需要设置临时吹扫管线的地方进行设计。通过从实际项目工作中得到的经验与计算相结合,给出了蒸汽吹扫管线吹扫参数确定的方法,以及如何设计临时吹扫管线,为管道蒸汽吹扫工作提供一定的参考。

Blowing and cleaning pipe system is an important work before start-up, especially for the high temperature and high pressure pipelines, use the high pressure steam to purge the pipe is necessary, such as turbine steam pipelines. In addition, design a temporary purge pipe meets the requests of pipeline purge. But designers don't thinking about the blowing conditions,and not to design the temporary purge pipeline during the design phase. Authors presents the method of parameters determination of steam blowing pipe purge, and how to design temporarily purge piping from the actual project work experience and calculation method of the standard. This paper is aimed at some guidance for pipe steam blowing work.