STAND FOR OPTIMIZATION OF BLADES HYDRODYNAMIC PROFILE AND FOR FUNCTIONAL TESTS IN HYDRAULIC TURBINE ROTORS

摘要

The invention relates to a stand for optimizing the hydrodynamic profile of blades and for functional testing hydraulic turbine rotors, meant for experimental research activity in laboratories of universities and institutes in the field of searching hydro power units. According to the invention, the stand forcibly circulates clean water in a closed circuit, using an adjustable-flow pumping unit (G.P.D.R.), which sucks it from a pump suction tank (R.A.P.) and discharges it in a modular water tunnel (T. A.M.), composed of five horizontal sections, the first three sections being fixed on an adjustable metal support and making the flow uniform in the fourth section, where the rotor blades are mounted, some axial turbine rotors with horizontal or vertical axis (R.T.A.O., R.T.A.V.), respectively, subjected to experimental tests, while the last section is supported by/communicates with the pump tank (R.A.P.), the load of the rotors driven by the kinetic energy of water being simulated with an adjustable brake system (S. F. R.) coupled to a horizontal or vertical shaft (23) thereof, and a system for supervisory control and data acquisition (SCADA) with programmable controller, transducers and computer (PC), carries out the control of the system (S.F.R.) and the control of the pumping unit (G. P. D. R.) flow and the monitoring/acquisition of a flow rate (Q) and a speed (v) of the water in the fourth section of the modular water tunnel (T. A. M.), hence of a torque (M) and rotative speed (n) in the shaft (23) of the rotor.