What are the cutting times of the impeller of the centrifugal pump?
If the performance of user requirements is slightly lower than the performance of the existing pipeline centrifugal pump, impeller or pump factory test results flow, head high and I hope the same pump with different diameters to improve the versatility of the product, can be used to cut the outer diameter of the impeller as a way to solve this problem.
Destroy the geometric similar conditions, similar conditions also mentioned, so the cutting line (throwing Bo line) and similar parabolic despite the same shape, but it is not a similar point connection, nor the efficiency curve and geometric speed curve.
Generally speaking, centrifugal pump impeller when cutting is not large, you can think of the same efficiency. With the centrifugal pump impeller cutting volume increases, efficiency will decline, especially high specific speed pump is more serious, the impeller allows the amount of cutting and the specific speed of NS (see table 3-2), centrifugal pump impeller after cutting,
