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AF泡沫泵汽蝕比轉(zhuǎn)速
汽蝕比轉(zhuǎn)速是來在最佳工況下的汽蝕相似準則數(shù).我國的汽蝕比轉(zhuǎn)速計算公式如下:
對于幾何相似、運動相似的相似泵，它們的汽蝕比轉(zhuǎn)速C必定相等。C值越大，則NPSH,越小，泵的抗汽蝕性能越好。汽蝕比轉(zhuǎn)速c值的大小僅與流量、轉(zhuǎn)速有關(guān)，而與揚程無關(guān)，即與出口參數(shù)無關(guān)。AF泡沫泵
目前，各類離心泵的汽蝕比轉(zhuǎn)速大致范圍如下:對于抗汽蝕性能要求不高的泵,C為600~800;對一般清水泵,C在800~1200之間;對抗汽蝕性能要求較高的泵,C在1600~ 3000之間。
Cavitation specific speed of AF foam pump
The specific speed of cavitation is the number of cavitation similarity criterion under the best condition. The calculation formula of specific speed of cavitation in China is as follows:
For similar pumps with similar geometry and motion, the specific speed c of cavitation must be equal. The larger the C value, the smaller the NPSH, the better the anti cavitation performance of the pump. The C value of cavitation specific speed is only related to the flow and speed, but not to the head, that is, to the outlet parameters. AF foam pump
At present, the cavitation specific speed of various centrifugal pumps is generally in the following range: for pumps with low requirements for cavitation resistance, C is 600-800; for general clean water pumps, C is 800-1200; for pumps with high requirements for cavitation resistance, C is 1600-3000.
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