The image below shows the balancing device of a multi-stage pump; I would appreciate some guidance from experts.
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This post was last edited by backcat666 on 2020-1-31 05:27. Question: What is the structure of this balancing device? Should the axial clearance indicated by the arrow be limited, and what amount is generally appropriate?
It seems to be a structure similar to a balance drum, as no balance pressure tube was seen, and there is relative motion between these two surfaces
The straight pipe below the red box is the balance pipe!
The manufacturer will provide you with this data; it’s included in the instruction manual that comes with the product
There isn’t! Is this a drum-shaped structure?
There isn’t! Is this a drum-shaped structure?
It has a balanced drum structure; it should be a BB5 type multi-stage centrifugal pump. The number of series is generally no more than 50; I recall that the pumps produced by Shenyang Blower are equipped with 45 series.
Are you referring to the balance disk clearance indicated by the arrow? Is it that big? Isn’t it usually 0.1-0.25mm?
For the balance drum structure, it is sufficient to have the gaps indicated by the arrows; two gaps are particularly important. The first is the gap between the balance drum and the balance sleeve, which should be around 0.1–0.15 on one side. The second is the axial gap between the balance drum and the final impeller, which should be around 0.5
For the balance drum structure, it is sufficient to have the gaps indicated by the arrows; two gaps are particularly important. The first is the gap between the balance drum and the balance sleeve, which should be around 0.1–0.15 on one side. The second is the axial gap between the balance drum and the final impeller, which should be around 0.5