天气预报 > 其他 > 真空降低到一定数值时要紧急停机
真空降低到一定数值时要紧急停机
更新时间: 2020-07-06 00:00:00  

由于真空降低使轴向位移过大,造成推力轴承过负荷而磨损;由于真空降低使叶片因蒸汽流量增大而造成过负荷(真空降低最后几级叶片反动度要增加);真空降低使排汽缸温度升高,汽缸中心线变化易引起机组振动加大;为了不使低压缸安全门薄膜损坏,确保设备安全,故真空降到一定数值时应紧急停机。

关键词: 真空 降低 一定 数值 紧急 停机

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