F - Mech Eng,Light,Heat,Weapons – 03 – B
Patent
F - Mech Eng,Light,Heat,Weapons
03
B
F03B 3/18 (2006.01)
Patent
CA 2173977
Wicket gates (128) and axial flow (106) or mixed flow (176) runner blades for a hydraulic turbine are provided. The wicket gates are arranged circularly around a central axis (X-X) and the gates are pivotable about pivot axes (Y-Y) parallel to the central axis. Each wicket gate has a trailing edge shaped to present a discharge angle (B) that varies from the bottom of the gate to the top of the gate. The shape of the runner blades is a function of the shape of the wicket gates such that the whirl value for fluid flow at substantially every point exiting the runner blades is between about zero and a value that is less than the change in whirl from the inlet to the exit of the runner.
Aubes directrices (128) et pales mobiles à écoulement axial (106) ou mixte (176) pour une turbine hydraulique. Les aubes directrices sont disposées en cercle autour d'un axe central (X-X) et peuvent pivoter autour d'axes (Y-Y) parallèles audit axe central. Chaque aube présente un bord postérieur profilé de façon à former un angle de décharge (B) qui varie de la base au sommet de l'aube. La forme de pales mobiles est déterminée en fonction de la forme des aubes afin que la valeur du tourbillonnement de l'écoulement fluidique, partiquement au niveau de tous les points de sortie du fluide des pales mobiles, soit comprise entre environ zéro et une valeur inférieure à la variation du tourbillonnement entre l'orifice d'entrée de l'agencement de pales mobiles et son orifice de sortie.
Gokhman Alexander
Gowling Lafleur Henderson Llp
Hydro West Group Inc.
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