MIT EINER DREHZAHL ARBEITENDE REVERSIERBARE MEHRSTUFIGE WASSERKRAFTMASCHINE.

摘要

The housings (8, 9) of the rotor (2) of the high-pressure stage and of the rotor (3) of the low-pressure stage are connected to each other by a return duct (10). Movable guiding vanes (15) are mounted around the rotor (2) of the high-pressure stage and fixed guiding vanes (16) surround the rotor (3) of the low-pressure stage. The ratio D2/D1 of the diameter (D2) of the rotor (3) of the low-pressure stage to the diameter (D1) of the rotor (2) of the high-pressure stage lies between 0.86 and 0.96. It is thus possible to obtain high hydraulic output, both for operation in pump mode and for operation in turbine mode. <IMAGE>