Device for fastening a moving blade onto a turbine rotor...

Details Device for fastening a moving blade onto a turbine rotor... Device for fastening a moving blade onto a turbine rotor...

F - Mech Eng,Light,Heat,Weapons

01

D

F01D 5/30 (2006.01) F01D 5/14 (2006.01)

Patent

CA 2481883

An attachment device for attaching a blade (12) to a turbine rotor disk (11) in a turbomachine, the blade root (30) forming a male portion engaged and held radially in a cavity (31) of complementary shape in the rotor disk (11), with means for preventing the blade root (30) from moving axially in the cavity (31), the blade axis (24) being inclined relative to a perpendicular to the axis of rotation of the rotor (10), in a direction and at an angle that are designed to compensate at least in part for the displacement of the axis of the blade (24) caused by the mechanical and thermal stresses applied to the rotor during operation of the turbomachine.

Dispositif d'attache d'une aube (12) sur un disque (11) de rotor de turbine dans une turbomachine, le pied (30) de l'aube formant une partie mâle engagée et retenue radialement dans une cavité (31) de forme correspondante du disque (11) de rotor, avec des moyens de blocage axial du pied (30) de l'aube dans la cavité (31), l'axe de l'aube (24) étant incliné par rapport à une perpendiculaire à l'axe de rotation du rotor (10), dans une direction et avec un angle destinés à compenser au moins partiellement le déplacement de l'axe de ladite aube (24) causé par les contraintes mécaniques et thermiques appliquées au rotor lors du fonctionnement de la turbomachine.

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