汽轮机调节油系统高压脉冲式冲洗方法研究

针对电厂汽轮机调节油系统采用常规冲洗方法冲洗工期长的问题,对阳江核电厂调节油系统的结构以及几种常规冲洗方法的特点进行了分析,提出了利用系统中的蓄能器进行扩容增压蓄能对管线进行高压高速脉冲式冲洗的实施方案。基于气体运动学及流体力学理论和工程经验,计算了冲洗时蓄能器的容积变化量及管道的最大流速,并对冲洗准备工作及实施流程进行了归纳,解决了常规冲洗方法时间长、效率低的问题。研究结果表明,采用高压脉冲式冲洗方法可有效缩短调节油系统冲洗工期,将调节油各模块的平均冲洗工期控制在5~10天内,且冲洗效果非常显著,具有良好的应用前景和推广价值。

High pressure pulse flushing method of steam turbine control oil system

Aiming at the problem that flushing cost long time of Steam turbine control oil system by conventional flushing method, the high pressure pulse flushing method was proposed according to the analysis on some conventional flushing methods and the characteristics of the Yangjiang nuclear power plant. The accumulator was used to flush the pipelines, the volume variation of accumulator and the largest velocity in the pipe were calculated based on the related theory and engineering experience. The preparatory work and the implementation process was summarized, the problem of low efficiency of conventional flushing method was solved. The results indicate that the flushing time can be shortened to 5 ~ 10 days and better flushing effectcan can be obtained by the high pressure pulse flashing method which has good prospect and value to be expaded. [ABSTRACT FROM AUTHOR]