Rotary assembly

Details Rotary assembly Rotary assembly

1998-10-27

2000-08-22

Verdier, Christopher

Fluid reaction surfaces (i.e., impellers)

Specific working member mount

Blade received in well or slot

416220R, 416 96R, F01D 532

Patent

active

061062340

ABSTRACT:
A rotary assembly of a turbine stage of a gas turbine engine comprising a disc carrying internally air cooled blades around its periphery has a cover plate of one face of the disc to create a plenum for a cooling air supply to the blades. The cover plate is fitted to the disc by means of an annulus of bayonet connections at a first radius and is retained at a second radius, less than the first radius, by a split ring arrangement. The split ring is fitted into a groove in the disc and engages an inner rim on the cover plate to restrain axial movement. An anti-rotation key is engaged in a slot in the cover plate and in the disc and is also retained by the split ring.

REFERENCES:
patent: 4558988 (1985-12-01), Kisling et al.
patent: 5018943 (1991-05-01), Corsmeier et al.
patent: 5302086 (1994-04-01), Kulesa et al.
patent: 5318405 (1994-06-01), Meade et al.
patent: 5320488 (1994-06-01), Meade et al.
patent: 5338154 (1994-08-01), Meade et al.
patent: 5472313 (1995-12-01), Quinones et al.
patent: 5622475 (1997-04-01), Hayner et al.

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