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Axial Flow Turbo Machines

Axial Flow Turbo Machines

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Product Description

AXIAL-FLOW TURBO MACHINES
The core piece of the experimental plant is the axial turbomachine with attached asynchronous motor. It can be operated either as a pump or turbine. To this end, different rotors /impellers and stators / guide vane systems are used. Included in the scope of delivery are four rotors / impellers and four stators / guide vane systems supplied with different blade / vane angles. The experimental plant contains a closed water circuit with expansion tank and centrifugal pump. The compressed-air powered expansion tank allows the turbomachine to be converted without loss of water.The asynchronous motor functions during turbine operation as a generator, and during pump operation as a drive. A powerful pump generates flow and pressure during turbine operation. The power that is generated by the turbine is fed into this pump.
The speed is detected contact-free by means of an inductive displacement sensor on the motor shaft. To determine the drive power, the asynchronous motor is mounted on swivel bearings and equipped with a force sensor to measure the drive torque. Manometers measure the pressures at inlet and outlet. Pressure sensors measure the differential pressures at rotor / impeller and stator / guide vane system. The flow rate is measured by an electromagnetic flow meter. The measured values are read from digital displays.
The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.
  • The unit shall perform the following experiments and investigations:
  • Learning Objectives [Experiments
  • Recording characteristic curves
  • Determining dimension less characteristics
  • Velocity triangles and pressure curves
  • Investigation of energy conversion within the turbomachine
  • How blade / vane shape affects power and efficiency
  • Determining the outlet angular momentum and its effect on the power
  • Cavitation effects
Specification:
  • Investigation of an axial flow turbomachine
  • Closed water circuit with expansion tank and centrifugal pump
  • Turbomachine may be operated as a turbine and as a pump
  • Two sets of impellers and guide vane systems for pump mode and two sets of rotors and stators for turbine mode with different inlet and outlet angles
  • Asynchronous motor with 4-quadrant Operation via frequency converter
  • Recovery of the brake energy
  • Motor with pendulum bearing, torque measurement via lever arm and force sensor
  • Inductive speed sensor on the motor
  • Manometers for measuring the inlet and outlet pressures
  • Measuring probe and differential pressure sensor for recording the pressure curve in the turbomachine
  • Electromagnetic flow meter
  • Display of power consumption, torque, speed, pressure, differential pressure and flow rate
  • Technical Data
  • Centrifugal pump
  • Power: 5,5kW
  • Max. flow rate: 150m3/h
  • Max. head: 10m
  • Asynchronous motor
  • Power: 1,5kW
  • Torque: ...5Nm
  • Speed: 0...3000min-1
  • Expansion tank: 1501_
  • Measuring ranges
  • Pressure (manometer): 2x -1...5bar
  • Differential pressure: 5x 0...500Mbar
  • Flow rate: 0...100m3/h
  • Speed: 0...3000min-1
  • Torque: 0...9,81Nrn
  • Dimensions and Weight
  • LxWxI-1: 3350 x 850 x 2465mrn
  • Weight: approx..570kg
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