主蒸汽进汽轮机前的门有哪些?电动主汽门,自动主汽门,还有哪些?主蒸汽调节门?它们的顺序是怎样的?

2025-03-15 15:34:17
推荐回答(3个)
回答1:

自动主汽门是在调速系统投入前控制进汽量、调速系统投入后打开到额定位置、在保护动作后自动关断的阀门。是与机组液压系统相联的,其操作装置是丝杆、手轮和液压、弹簧装置。
电动主汽门装在自动主汽门前,负责机组停机时关断进汽管路,其操作装置是电动机。一般不与保护系统相联。
控制开度的是高压调节汽门和低压调节汽门。

回答2:

先主汽门后面是主蒸汽调节门,在主蒸汽管道上还有高压旁路系统。一般大机组主汽门和主汽调门都是液压的。

回答3:

对小机组而言(5万以下),主蒸汽先通过电动主气门,然后是自动主汽门,接着是调节汽门进入汽缸。
对于大机组而言,主蒸汽通过自动主汽门,然后是调节汽门进入气缸。

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