Rotary kinetic fluid motors or pumps – With control means responsive to non-cyclic condition... – Plural diverse condition responsive
Patent
1997-02-12
1999-09-21
Verdier, Christopher
Rotary kinetic fluid motors or pumps
With control means responsive to non-cyclic condition...
Plural diverse condition responsive
415 13, 415 24, 415 33, 415 36, 415 42, 416168A, 416174, 416239, 416244A, 416245A, 298892, F03B 306, F03B 318, F03B 1510, F03B 1514
Patent
active
059544740
ABSTRACT:
A turbine, disposed in water flowing therethrough, includes a hub and associated runner blades. Each blade comprises an inner surface and a distal outer surface, a leading edge and a trailing edge separated by a water directing surface. Each blade is rotatable relative to the hub about a blade rotational axis. The hub includes a spherically-shaped outer surface in a region of the hub swept by the inner surface of the blades when the blades are rotated from maximum to minimum pitch. The hub may also be associated with blades in which the chord is reduced in the root region of the blade. The turbine may also include seals attached to the blade inner surface and an essentially spherically-shaped discharge ring to improve certain turbine parameters such as cavitation, efficiency, flow disturbance, and fish survivability.
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Cybularz Joseph M.
Donelson Richard K.
Fisher, Jr. Richard K.
Grubb Robert G.
Heine Wolfgang
Verdier Christopher
Voith Hydro, Inc.
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