Description: The turbine torque is determined by force measurement on a band brake and is read on spring balances. Water turbines are turbo machines utilizing waterpower. The Francis turbine is part of the reaction turbines, which convert the pressure energy of the water into kinetic energy in the control device and in the impeller. The water is fed in the control device by means of a spiral housing. The flowing water is accelerated in the control device by the adjustable guide vanes and directed onto the vanes of the impeller. The redirection and further acceleration of the water in the impeller generates an impulse, which is transmitted to the Francis wheel.
Specification:
1.Investigation of a Francis turbine.
2.Closed water circuit with pump, motor, flow control valve and tank with optional cooling.
3.Pump with variable speed via frequency converter.
4.Adjustment of flow rate via flow control valve.
5.Loading the turbine by use of the asynchronous machine as generator.
6.Rotor and guide vanes of the turbine completely visible.
7.Adjustable guide vanes for setting different angles of attack.
8.Non-contact speed measurement at the generator haft and force sensor for measuring the driving torque.
9.Digital display for temperature, flow rate and pressures (additional manometer within scope of supply), speed, torque and electrical power of generator.
10.Measuring section: flow cross-section WxH: 292x292mm. Length: 420mm. Wind velocity: 3.1-28m/s. Axial fan: power consumption: 2.2kW.
11.Measuring ranges: Force: lift: ±4N, drag: ±4N. velocity: 3.1-28m/s. Angle: ±180°.
