Apparatus for pumping operation of a hydraulic machine having Fr

Details Apparatus for pumping operation of a hydraulic machine having Fr Apparatus for pumping operation of a hydraulic machine having Fr

1979-12-13

1981-09-01

Garrett, Robert E.

Rotary kinetic fluid motors or pumps

With lubricating, sealing, packing or bearing means having...

For shaft sealing, packing, lubricating or bearing means

415170A, 415176, F01D 300, F01D 1102

Patent

active

042869196

ABSTRACT:
An apparatus for operating a hydraulic machine having a Francis type runner provided with a multi-stage seal between the inner peripheral surface of the runner and the stationary part. The apparatus has a water extracting pipe opening at its one end to one of the seal stages of the multi-stage seal and to a draft tube at its other end. A valve disposed in the water extracting pipe is adapted to be opened when the water head has become greater than a predetermined level during the pumping operation of the hydraulic machine.

REFERENCES:
patent: 3236499 (1966-02-01), Chatfield et al.
patent: 3253816 (1966-05-01), Sproule
patent: 3516757 (1970-06-01), Baumann
patent: 4196910 (1980-04-01), Aizu

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