What is the purpose of the small holes in the circle shown in the picture? What’s your name?
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This post was last edited by wxd2008 on 2019-4-29 23:55. What is the purpose of the small holes around the high-speed pump impeller in the image? What’s your name? Some say it is to balance the axial force, but the axial force in high-speed pumps is not very large to begin with (unlike the impellers of ordinary centrifugal pumps), and is it really necessary to use so many holes to balance this axial force? Personally, I think it serves to reduce weight, which is equivalent to a lightweight design. I’d appreciate some guidance from those who know more – no need to thank me! (High-definition images are available on floors 34–44; please discuss them.)
This needs to be taken into account for closed and semi-open impellers.
But the axial force of high-speed pumps is not very large to begin with (unlike the impellers of ordinary centrifugal pumps), and is it really necessary to have so many holes to balance the axial force? Personally, I think it serves to reduce mass, which is equivalent to a lightweight design?
What does it rely on to determine that the axial force is not large? Is F=PS, meaning the pressure is low?
The impeller design is different; in high-speed pumps, the fluid exits directly from the impeller
Hey, isn’t there any pressure inside the pump chamber? Is there no pressure from the outer circumference of the impeller to the hub? Only at the exit? I’ve never seen this type of pump; you could develop one
Which pump does not allow the medium to flow out directly? It has nothing to do with this
Is the pump’s head related to the impeller diameter? Is there a relationship with the corresponding pressure? If it doesn’t matter, then why have so many different pump models? And why are there so many different impeller diameters?