The speed issue of centrifugal pumps!
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Does the speed of a centrifugal pump change during operation?
It is only possible by using an inverter motor, with the frequency changing during the inverting process
If the outlet is opened wider, the current will increase, but won’t the speed also change?
There can only be minor changes that can be ignored; if the rotation speed changes too much, it indicates that there is a problem with the operating conditions of your centrifugal pump, and your motor will burn out very quickly
There can only be minor changes that can be ignored; if the rotation speed changes too much, it indicates that there is a problem with the operating conditions of your centrifugal pump, and your motor will burn out very quickly
The speed of a centrifugal pump is determined by the speed of the motor. Opening the inlet and outlet valves wide and closing them narrow will only cause changes in the load on the centrifugal pump, which in turn affects the current drawn by the motor. The speed of a centrifugal pump equipped with variable frequency control will change.
This post was last edited by Zhongyuanren on 2016-10-29 at 15:41. Yes. Industrial-frequency asynchronous motors change in response to load variations and changes in the grid’s reactive power; generally, these changes are minor (with a deviation of within 100 revolutions per minute). Using a synchronous motor will not cause any changes ； The variable-frequency motor changes as adjustments are made.
The rotation speed changes slightly depending on the flow rate and voltage, by a few rotations or a dozen or so