Turbine wheel provided with an axial retention device that locks blades in relation to a disk

摘要

A turbine wheel including a plurality of blades, each of the blades presenting an airfoil, a platform, and an attachment member, a disk having the blades mounted at the periphery thereof, the attachment member of each blade being engaged in a housing that opens into a periphery of the disk and extending axially between two opposite faces of the disk, the housings being separated by teeth, and an axial retention device for retaining the blades. The disk includes a first stop member, and the platform of the blade includes a projection projecting axially beyond one of the faces of the disk. The projection includes a second stop member. The axial projection, the second stop member, and the face of the disk together form a groove facing towards the axis of the disk, the groove serving to receive the axial retention device.

主权项

1. A turbine wheel comprising:
a plurality of blades, each blade presenting an airfoil, a platform, and an attachment member; a disk having the blades mounted at a periphery thereof, the attachment member of each blade being engaged in a housing that opens into the periphery of the disk and that extends axially between two opposite faces of the disk, the housings being separated by teeth; an axial retention device for retaining the blades by locking the blades axially relative to the disk; wherein at least one of the blades comes into abutment against a first stop member of the disk to block the blade relative to the disk in a first axial direction, the first stop member extending radially outward from an outermost radial surface of one of the teeth of the disk at a downstream portion thereof, the first stop member being received in a cavity of the blade and abutting a contact face of the platform of the blade, the platform of the blade includes a projection projecting axially beyond one of the faces of the disk, the projection including a second stop member, and the axial projection, the second stop member, and the face of the disk form a groove facing towards the axis of the disk, the groove serving to receive the axial retention device such that the axial retention device, in the assembled position, comes into abutment in the first axial direction against the second stop member, and against the face of the disk in a second axial direction opposite to the first axial direction, whereby the blade is prevented from moving relative to the disk in the second axial direction.