["Die Bestätigung der Druckspeizegruppe hinter der Tropfentenventil

2018-12-28View Original

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使用蒸汽换热器，疏水阀前压力等级根据进气压力确定很好理解，但疏水阀后压力怎样确认？疏水阀排放直接对大气，是按照常压，或者常压+管路压阻，又或者按照进气压力？哪位能够给于解释，要有出处啊！

Reply #22018-12-29

蒸汽疏水阀的后压力也就是背压多少是根据冷凝水排放方式决定的，如果是直接对大气排放，那么背压就是0，如果有冷凝水回收，考虑到饱和冷凝水在低压环境会闪蒸，那么就会产生一定的背压，蒸汽疏水阀实际的工作压力就是入口压力减去背压所得的压差。

Reply #32019-01-03

已经找到标准和规范：HG/T 20570.21工艺系统工程设计技术规定，GBT 50812-2013 化工厂蒸汽凝结水系统设计规范

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["Die Bestätigung der Druckspeizegruppe hinter der Tropfentenventil

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