Multi‐Pump Test Rig Description and Specifications for Lab Tenders
Multi‐Pump Test Rig.
1] Self‐contained mobile unit consisting of four different pumps and measurement instrumentation.  Supplied with a DC dynamometer, sump tank, volumetric tank and interconnecting pipework and valves.  Instrumentation includes torque measurement, tachometer with analogue read‐out.  Bourdon gauges to measure delivery pressures.  Bourdon vacuum gauge to measure suction at pump inlet.  GRP volumetric tank with low and high flow ranges.  Knife edge weirs for flow measurement.  Basic unit includes the following four pumps: centrifugal pump, turbine pump, axial flow pump, gear pump.  Speed range 0 to 3000 rpm  Torque measurement 0 to 1Nm and 0.5 to 3.5Nm dual range.  Variable speed control by DC thyristor controller.  Demonstration capabilities: ‐ Measuring manometric head across a pump using Bourdon gauges connected to the inlet and discharge ‐ Measuring flowrate through a pump using a volumetric tank or knife edge weir ‐ Determining the power absorbed by a pump from measurements of torque and speed of dynamometer motor ‐ Determining the performance of a pump at constant speed by producing a set of characteristic curves, namely, manometric head,
power absorbed by the pump and pump efficiency, all plotted against flow ‐ Determining the effect of speed on the performance of a pump by producing a set of characteristic curves ‐ Understanding the difference between dynamic pressure type pumps and positive displacement type pumps ‐ Understanding the difference between rotodynamic type pumps. ‐ Determining the volumetric efficiency of a positive displacement pump by comparing actual and theoretical flowrate ‐ Investigating the effect of suction losses on a centrifugal pump