Fluid reaction surfaces (i.e. – impellers) – Specific working member mount – Blade received in well or slot
Patent
1995-12-14
1997-04-22
Look, Edward K.
Fluid reaction surfaces (i.e., impellers)
Specific working member mount
Blade received in well or slot
416220R, F01D 532
Patent
active
056224761
ABSTRACT:
A fixing arrangement for axially fixing a blade in position on a rotor disk of a turbomachine rotor includes a relatively flexible locking wedge inserted between the root of the blade and the bottom of the axial groove in the periphery of the rotor disk in which the root is received in a radially interlocking manner, the locking wedge having a retaining hook which is received in a groove in the blade root to hold the locking wedge in position. In one embodiment the locking wedge holds a plate in position in the recesses defined by undercut projections on the upstream face of the blade root and the rotor disk to prevent axial movement the blade relative to the disk. In an alternative embodiment the downstream end of the locking wedge has a stop which engages the downstream faces of the blade root and the rotor disk to prevent axial movement of the blade in the upstream direction, and the upstream face of the blade root has a projection which overlaps and bears against an upstream face of the disk to prevent axial movement of the blade in the downstream direction.
REFERENCES:
patent: 2928651 (1960-03-01), Turnbull
patent: 3508844 (1970-04-01), Le Blanc
patent: 4478554 (1984-10-01), Surdi
patent: 5259728 (1993-11-01), Szpunar et al.
patent: 5350279 (1994-09-01), Prentice et al.
Adde Danielle C. R.
Charbonnel Jean-Louis
Gougeon Philippe F. P.
Miraucourt Gerard G.
Look Edward K.
Sgantzos Mark
Societe Nationale d'Etude et de Construction de Moteurs d'Aviati
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