Blade for a water turbine

F - Mech Eng,Light,Heat,Weapons – 03 – B

Patent

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Details

F03B 3/12 (2006.01) E02B 9/00 (2006.01) F01D 5/12 (2006.01) F01D 5/14 (2006.01) F03B 13/10 (2006.01) F03D 11/00 (2006.01)

Patent

CA 2724693

A turbine blade is described which includes a blade root;a blade tip; a leading edge extending from the blade root to the blade tip; a trailing edge extending from the blade root to the blade tip; a blade root chord defined as a straight line between the leading edge and the trailing edge at the blade root; a blade tip chord defined as a straight line between the leading edge and the trailing edge at the blade tip; wherein the blade tip chord is angularly displaced from the blade root chord by a twist angle of between 50° and 90°.

L'invention porte sur une aube de turbine, qui comprend une emplanture d'aube; une pointe d'aube; un bord d'attaque s'étendant de l'emplanture d'aube à la pointe d'aube; un bord de fuite s'étendant de l'emplanture d'aube à la pointe d'aube; une corde d'emplanture d'aube définie sous la forme d'une ligne droite entre le bord d'attaque et le bord de fuite à l'emplanture d'aube; une corde de pointe d'aube définie sous la forme d'une ligne droite entre le bord d'attaque et le bord de fuite à la pointe d'aube; la corde de pointe d'aube étant angulairement décalée de la corde d'emplanture d'aube d'un angle de torsion se situant entre 50° et 90°.

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