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

Claim 12:
13. A device for maintaining a pumping system (2) of a pumping station (1) in operational condition, 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 device comprising:
first sensors configured to acquire first measurements of hydraulic and mechanical values of the pump (20), the discharge pipe, the suction pipe, said first measurements comprising a total manometric height as a function of a flow rate of the pump, a hydraulic yield of the pump as a function of the flow rate of the pump, a mechanical power demanded from the pump on a shaft of the pump as a function of the flow rate, a specific energy consumption of the pump, and a Net Positive Suction Head (NPSH) defined as a difference between a liquid pressure and a saturation vapor pressure at each point of the pump;
second sensors configured to acquire second measurements of electrical and mechanical values of the motor (21), said second measurements comprising an active power demanded as a function of a mechanical power delivered on a shaft of the motor, a yield of the motor, a movement power factor representing a value of an angular phase shift between a voltage and an intensity of a current in the motor at a fundamental frequency, a current intensity demanded as a function of a rotation speed of the motor shaft, a torque as a function of the rotation speed of the motor shaft, and a rotation speed of the motor as a function of the mechanical power delivered on the shaft of the motor;
an electrical cabinet (3) configured to collect the first and second measurements from the first and second sensors, and to transmit operating instructions to said pumping system (2); and
a monitoring system (7) comprising a computer and a human-machine interface, the computer in communication with the first and second sensors and configured to execute a central program (8) configured to cause the computer to:
measure 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),
analyze and interpret the measured physical values in order to detect one or more anomalies,
pre-diagnose probable causes of the detected anomalies, and determine dctcrmining preventive and curative actions to be undertaken on the pumping system (2), and
automatically transmit commands to the electrical cabinet (3) as a function of the detected anomalies, the pre-diagnosed probable causes, and the determined preventive and curative actions, and display results of the detected anomalies, and the pre-diagnosed probable causes, and the determined preventive and curative actions on the human-machine interface.