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["[\"Problème d'érosionion

2019-06-09View Original

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最近安装了一台滑片泵(属于容积泵),流量是60m3/H,接受罐高度20米,泵进出口都是DN80的,当电机变频超过70%时,泵腔内出现气蚀的声音,变频加大,管道和泵内的气蚀声音加剧。抽的是地下槽里的热水,温度大约85℃,槽深约2米,液位长期保持在比泵进口轴线低1米左右位置,请问大神如何解决气蚀问题?我能想到的就是1、泵进口增压(不是封闭槽,难以增压);2、降低地下槽液体温度。请大神帮忙算算水温多少能消除汽化现象,初步计划在吸入管末端做一个冷热水的混合管,加入适量的冷水来降低进口温度,不知道这样是否可行??谢谢大家!!
Reply #22019-06-10
核算一下进口管道是不是太小了
Reply #32019-06-10
温度85,液位还比泵低,不汽蚀才有问题。
Reply #42019-06-15
我想这是怎样吸上液体的,容积泵比罐子高,罐子是敞口的,水温85℃,
Reply #52019-06-20
容积泵具有很强的自吸能力
Reply #62019-09-16
个人觉得缓冲一下比较好,在入口扩个径。
Reply #72019-09-18
需要提前灌泵,保险起见在泵入口加装缓冲罐。

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