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2020-01-03View Original

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Reply #22020-01-04
哈哈哈哈,切机?是表示两台或两台以上的机组倒换的意思吧:lol 如果是这样就按着这个意思说说。 首先要利用每台机组出口的止回阀。也就是说在投送气前,用循环阀(或放空阀)控制压力略低于系统压力后,即可全开投送机组的出口阀。剩下的事情就是一系统的压力或流量作为倒换时的参照点,逐渐的关闭投送机组的循环阀(或放空阀)逐渐的开大下线机组的循环阀(或放空阀),直至下线机组压力下降,然后关闭该机的出口阀、入口阀,停机。值得注意的是,当发现止回阀有泄漏回气时,就得用机组的出口阀控制了。供参考。
Reply #32020-01-04
切机完成后,欲停用机组不要断电停机,要在空负荷下运行5到10分钟。主要是防止运行机出故障,而另一台却已经停机,重新启动花费时间长,影响工艺系统。
Reply #42020-01-04
切机的最佳效果是,对工艺系统的冲击最小。想要精细切机,先不要开出口阀,观察机组最后一级的出口压力,待两台机子压力基本平衡时,两组人同步操作,一组关运行机的出口阀,另一组开备机的出口阀,注意操作幅度要小,两组人协调同步操作

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