["求助问题，, центробеж 泵入口压力表如何选择？

2020-04-29View Original

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최근 한工艺要求泵的入口和出口都安装了压力表，那么泵的入口压力怎么确定呢？现在是一个储罐的输送泵，罐高约3米左右。在这种情况下，泵的入口一定是正压吗？

Reply #22020-04-29

液面上是正压还是负压

Reply #32020-04-29

보반一般情况下，储罐基本认为是常压罐或微正压。所以楼主只要计算罐内液体的最大压强即可。

Reply #42020-04-30

보반一般是那样，般是有负压的可能

Reply #52020-04-30

https://bbs.hcbbs.com/thread-1764871- - - .html 要计算一下泵的入口压力，最高液位和最低液位的情况都考虑一下，这样就可以得到测量范围了。再取一定的余量就可以选表了。用我的表算一下

Reply #62020-04-30

центробеж泵入口压力表量程比较好确定。液面以上压力泵入口的液位压力（泵入口液位高X密度X 981）。再留些余量。但能否请教入口加压力表的原因是什么呢？

Reply #72020-04-30

P=ρgh .P若P是常压就直接ρgh。然后确定量程在 .5 - .倍范围内就行了。要精度高就选择远传

Reply #82020-04-30

.9 这属于工艺参数。问下工艺人员"

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["求助问题，, центробеж 泵入口压力表如何选择？

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