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["선택된 泵,泵入口压力计算"

2018-07-19View Original

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"본 게시글은 2彩的 阳光 于 2218-7-11
Reply #22018-07-19
看到您的公式,敬佩之心油然而生,但是完全看不懂!弱弱的问一句,泵的入口压力应该是负值吗?
Reply #32018-07-19
入口压力为什么是负值呢?通常有倒灌跟吸上两种情况
Reply #42018-07-19
你指的是表压么?如果入口侧液面高度略高于泵入口高度(高出的部分刚好抵消管道损失),那么入口表压为0,如果低于这个高度,表压为负(即真空度),如果高于这个高度那么表压为正值。
Reply #52018-07-19
请教一下大家,入口管损与如口设备损耗是什么呀难道进口不是就动能消耗吗?恕小弟愚昧

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