Fan blade retaining structure
AssigneeIHI Corporation
InventorTakashi Oka
Life of this patent
Estimating the term…
Abstract
A disk 10 includes a plurality of dovetail grooves 12 which are spaced at a predetermined angular interval in a circumferential direction and extend in an axial direction. A fan blade 20 includes a dovetail part 22 which is fitted to each of the dovetail grooves in an axial direction and capable of transmitting a centrifugal force produced during rotation to the disk. The disk further includes a flange part 14 which is positioned in front of the dovetail grooves and extends outward in a radial direction. A ring-shape retainer member 30 is fitted between a front surface 22a of the dovetail part 22 and a rear surface 16a of the flange part 14 and transmits an axial forward load acting on the fan blade 20 to the disk 10 via the rear surface 16a of the flange part.
Claims5
A fan blade retaining structure in which a plurality of fan blades is configured to be attached to an outer periphery of a disk rotationally driven by a turbine,
- wherein the disk includes a plurality of dovetail grooves configured to be spaced at a predetermined angular interval in a circumferential direction and to extend in an axial direction,
- wherein each of the fan blades includes a dovetail part configured to be fitted to each of the dovetail grooves in an axial direction and capable of transmitting a centrifugal force produced during rotation to the disk,
- wherein the disk includes a flange part configured to be positioned in front of the dovetail grooves and to extend outward in a radial direction, and
- wherein the fan blade retaining structure further comprises a ring-shape retainer member configured to be fitted between a front surface of the dovetail part and a rear surface of the flange part so as to transmit an axial forward load acting on the fan blade to the disk via the rear surface of the flange part.
Dependencies are inferred from the claim text.