System and method for pump control based on pump vibrations
AssigneeS.P.M. Instrument AB
InventorTim Sundström
Life of this patent
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Abstract
A method of operating a centrifugal pump (10) having a casing forming a volute (75) in which a rotatable impeller (20) is disposed for urging a fluid material (30) into the volute, the method comprising: monitoring a fluid pressure pulsation event inside the pump casing; generating, based on said monitoring, a vibration signal indicative of occurrence of said first fluid pressure pulsation event; generating a reference signal indicative of a rotational reference position of said rotating impeller; determining a temporal relation value (FI, FI(r)) based on time of occurrence of said fluid pressure pulsation event (SP(r)) and said reference signal.
Claims28
A method of operating a centrifugal pump having a casing forming an adaptive volute with an adjustable cross sectional area, in which casing a rotatable impeller is disposed for urging a fluid material into the volute, thereby causing a fluid pressure pulsation event having a repetition frequency dependent on a speed of rotation of the impeller, the method comprising:
- receiving a vibration signal indicative of occurrence of said fluid pressure pulsation event, wherein the vibration signal is responsive to monitoring the fluid pressure pulsation event with a vibration sensor;
- generating, based on a position signal generated by a position sensor, a reference signal indicative of a rotational reference position of said rotating impeller in relation to the casing;
- determining a temporal relation value based on
- time of occurrence of said fluid pressure pulsation event and
- said reference signal;
- determining an operation parameter of the pump based on the determined temporal relation value;
- wherein
- the operation parameter comprises a volute set point value;
- and
- controlling an actuator of the centrifugal pump to adjust cross sectional area based on the volute set point value.
A system for operating a centrifugal pump having a casing forming an adaptive volute with an adjustable cross sectional area, in which casing a rotatable impeller is disposed for urging a fluid material into the volute, thereby causing a fluid pressure pulsation event having a repetition frequency dependent on a speed of rotation of the impeller, the system comprising:
- one or more hardware processors configured to;
- receive, based on monitoring with a vibration sensor, a vibration signal indicative of occurrence of said fluid pressure pulsation event;
- generate, based on a position signal generated by a position sensor, a reference signal indicative of a rotational reference position of said rotating impeller in relation to the casing;
- determine a temporal relation value based on time of occurrence of said fluid pressure pulsation event and said reference signal;
- determine an operation parameter of the pump based on the determined temporal relation value;
- wherein the operation parameter comprises a volute set point value;
- and
- control an actuator of the centrifugal pump to adjust the cross sectional area based on the volute set point value.
Dependencies are inferred from the claim text.