What is the total translational momentum of the rotor?
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Must the total translational momentum of the pump rotor be the intersection of the limit values set by various restraining structures such as bearings? Please, dear friends, discuss it
It should be that, when designing the rotor assembly, these factors need to be taken into account. The control and balance of axial force are usually limited to abnormal situations such as the equipment starting up or shutting down abruptly; in such cases, the axial force tends to exert a certain directionality. When designing the rotor, its balance under normal operating conditions should be taken into account; bearing limits serve only as a safeguard and are effective only for short periods of time.
The total string length is determined by pushing the pump rotor to one end and then pulling it back to measure the actual value; thereafter, it is adjusted according to the manufacturer’s specifications. For multi-stage pumps, it is necessary to remove the balance disc and drum in order to make the measurement.