Patent ID: 11920600
Assignee: SUEZ INTERNATIONAL
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A method for maintaining a pumping system (2) of a pumping station (1) in operational condition (30), said pumping system (2) equipped with a pump (20), a motor (21) driving the pump (20), a discharge pipe for discharging fluid via the pump (20), and a suction pipe for sucking in fluid via the pump (20), said method comprising at least the following steps:
measuring physical values characterizing the operation of the pumping system (2), including physical values characterizing a state of the discharge pipe of the pump (20) and a state of the suction pipe of the pump (20);
analyzing and interpreting the measured physical values in order to detect one or more anomalies;
pre-diagnosing probable causes of the detected anomalies, and determining preventive and curative actions to be undertaken on the pumping system (2);
automatically implementing preventive and curative actions on the pumping system (2);
analyzing and interpreting curves characterizing operation of the suction and discharge pipes of the pump (20); and
controlling submersion of a water intake at the inlet of the pumping system (2),
said step of analyzing and interpreting curves characterizing the operation of the discharge pipe of the pump, taking into account an evolution of the following parameters over time, which are measured or computed values:
a discharge pressure of the pump,
a flow rate governed by the pump,
a current intensity demanded from the motor, and
an active power demanded from the motor,

and said step of analyzing and interpreting curves being also based on a temporal evolution of the discharge pressure relative to the flow rate governed by the pump, the step of analyzing and interpreting leading to a detection of whether the discharge pipe is blocked,
wherein if the discharge pipe is blocked, the method further comprises steps for cleaning the discharge pipe.