Oil pumps are driven machines. Depending on the viscosity of the oil they work either according to the positive displacement principle for for high viscosity oils, or as rotodynamic pumps for low viscosity oils. Oil pumps are used to deliver oil required in machines or plants for the purpose of lubrication or cooling. Another area of application is the use of oil to transfer energy in the field of hydraulics.
The supply unit provides the working medium oil for several oil pumps. The pumps are powered by the drive unit The trainer includes a closed oil circuit with an internal oil tank. The individual pumps are placed on the work surface and connected via hoses. To power the pump, it is connected to the drive unit with a V-belt. The supply unit is equipped with a closed-circuit air/oil cooling system that cools the oil.
The flow rate is measured with an oval wheel flow meter. A temperature sensor records the temperature in the piping system. The trainer has pressure sensors to measure the inlet and outlet pressures. The measured values are read from digital displays on the supply unit.
The well-structured instructional material sets out the fundamentals and provides a step-bystep guide through the experiments. The unit perform the following experiments and investigations:
Learning Objectives / Experiments
in combination with Universal Drive and 5rake Unit and a pump of the series Oil Pumps with supply Unit for Oil Pumps
Recording of pump characteristics
Determination of the power requirement of the pump
Determination of the hydraulic power of the pump
Determination of the pump efficiency
Determination of the system characteristics and the operating point of the pump
Specification:
Supply unit for operation of different oil pumps
Closed oil circuit
Connection of pumps via hydraulic hoses with quick-release couplings
Pressure sensors at the inlet and outlet included in the scope of delivery of the pumps
Measurement of the oil temperature in the pipeline system with Pt100
Closed-circuit cooling via air/oil heat exchanger
Flow measurement with oval wheel flow meter
Digital display of flow, pressure and temperature
Software with data acquisition function via USB under Windows Vista or Windows 7