Reciprocating pumps and metering pumps monitoring and control projects

Alarm Shutdown Monitoring Item Alarm Shutdown Overspeed XX Lubricating Oil Temperature X Lubricant Pump Available X Fluid Level Fluid Level X Fluid Cylinder Lubrication Failure X Lubricating Oil Pressure XX Motor Stator Winding Temperature XX Frame Lubrication System Pressure XX Bearing Temperature XX Valve Leakage X Packing Temperature XX Diaphragm Pump, Diaphragm Rupture X Lube Oil Filter Differential Pressure High X Diaphragm rupture detection device (pressure switch) may be provided when the dosing pump is of double diaphragm construction. For the reciprocating pump and metering pump inlet and outlet valves can be acoustically monitored to monitor the working conditions of the valve to determine whether the failure. Its working principle is to use the piezoelectric transducer installed near the valve to receive the ultrasonic wave generated during the movement of the valve to determine the working condition of the valve. Figure 1-54 shows the ultrasonic wave generated by the normal working valve and faulty valve. (A) is the signal measured by the sensor, (b) is the measured sound pressure level, L0 is the noise generated by the pump (sound level), Ll is the noise (sound level) generated by the leakage of the pump and the valve, and LD is Accident diagnostics show the noise generated by the valve leakage. Data have been reported, the valve leakage reached l%, can be detected.

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