Disturbances and disturbance moments
Thread Content
Seeking help: Could any expert tell me how to calculate the disturbances and disturbance moments associated with pump equipment? Are there any reference calculations or standards that can be provided? Specifically, I need information on: 1. The disturbances of the machine (including vertical and horizontal disturbances at the first and second harmonics), as well as the disturbance moments (including rotational and torsional moments at the first and second harmonics), along with their directions. 2. Location of the disturbing force and the disturbing torque.
The disturbance value of a centrifugal pump is calculated using the following formula: Pn = mew², where: • Pn – the disturbance value of the centrifugal pump (N)； • e—Eccentricity of the centrifugal pump (m) ； • w—circular frequency of machine disturbance (1/s), w=0.105n ； • m—mass of the rotating part of the motor (kg).
You can also refer to SHT3057
When the standard value of foundation bearing capacity is not less than 80 kPa, the motor power is not greater than 560 kW, and the mass of the centrifugal pump foundation is not less than three times the mass of the machine, power calculations may be omitted；