Two-stage/single-stage reversible pump-turbine with supplying pu

Details Two-stage/single-stage reversible pump-turbine with supplying pu Two-stage/single-stage reversible pump-turbine with supplying pu

1978-02-16

1980-08-12

Freeh, William L.

Pumps

Motor driven

Fluid motor

415123, 415500, 290 52, F01D 130, F01D 1510

Patent

active

042170770

ABSTRACT:
In a hydroelectric facility, a vertically mounted rotatable shaft is connected to a motor-generator and carries a pump-turbine with a supplying pump disposed below and immersed in water, the supplying pump disengaging from the shaft when the pump-turbine is driving the motor-generator and engaging the shaft when the motor-generator is driving the pump-turbine and supplying pump, thereby providing a two-stage pumping mode and a single-stage generating mode.

REFERENCES:
patent: 2246472 (1941-06-01), Sharp
patent: 2660033 (1953-11-01), Bowden
patent: 3794456 (1974-02-01), Jelusic
patent: 3810717 (1974-05-01), Rarcevic
patent: 4008010 (1977-02-01), Fauconnet
patent: 4014624 (1977-03-01), Takase
patent: 4056330 (1977-11-01), Lieber

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