Plant for the investigation of hydraulic machines, particularly water turbines and models thereof, under working conditions

摘要

474,415. Hydraulic turbines &c. ESCHER WYSS MASCHINENFABRIKEN AKT.-GES. Jan. 14, 1937, No. 1140. Convention date, Feb. 17, 1936. [Classes 110 (i) and 110 (iii)] In a plant for the investigation of hydraulic machines such as turbines or models thereof, air under variable conditions is passed through the parts, and pressure, volume and output measurements are made from which the per. formance as a hydraulic machine can be deduced. In the Figure, the machine 1, 2, to be tested is arranged in the mouth of a duct 4 into which air is drawn by a fan 10 driven by an electric motor 11. In the path of the air are a chamber 6, a device 7, for eliminating eddies, a volume gauge 9, and an adjustable baffle 14. The fan 10 may have adjustable blades. The energy developed by the rotor 2 under test may be absorbed by a brake 3 or by an electric generator, the current from which may be supplied to the motor 11. In a modification the air is forced through the rotor under test.