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汽轮机进汽和抽汽流量异常增大原因分析与处理

Ethylene Industry(2020)

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Abstract
某抽汽凝汽式汽轮机大检修后,进汽调节阀开度异常增大,抽汽量明显增加.通过试验与检修发现,抽汽逆止阀内漏,抽汽管网蒸汽进入汽轮机内,使抽汽口处压力升高,导致汽轮机效率降低,造成进汽与抽汽流量异常.对抽汽逆止阀及其执行机构进行检修,调整逆止阀阀杆初始位置,汽轮机恢复正常.
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