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["Die Übungsleitung für Überschtungsrichtlinienen besagt,

2018-12-28View Original

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Reply #22018-12-28
继续翻译:
Reply #32018-12-28
过热蒸汽管道设置经常疏水的目的是什么?
Reply #42018-12-28
5、 蒸汽输送过程中散热会使得温度降低凝结析水。 个人认为这种说法可能不对,汽轮机进口的蒸汽都要求是过热度的情况下,怎么可能散热降温到饱和状态。
Reply #52018-12-28
蒸汽管道辐射散热,温度下降很快,保温绝热无法完全保证蒸汽始终处于过热度状态,所以肯定是会降温到饱和蒸汽状态的,也就会有部分凝液产生。 为防止水击,必须设置疏水。
Reply #62018-12-31
过热蒸汽如果过热度大的话,不可能冷凝的,不需要经常疏水,规范有误。
Reply #72019-01-22
以我们实际项目为例,过热器出口是4.2MPa 420℃的过热蒸汽 4.2MPa的饱和蒸汽温度才255℃ 主蒸汽管道到汽轮机口也就最多1十米 怅可能损失这么多热量降到饱和蒸汽。 而且汽轮机进口的额定蒸汽都是3.8MPa 382℃ 怅会出现饱和蒸汽。

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