Turbine blade-to-disk retention device

Details Turbine blade-to-disk retention device Turbine blade-to-disk retention device

1998-11-23

2000-08-29

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Specific working member mount

Blade received in well or slot

416220R, 416204A, 416207, 416244R, 416244A, 416248, F01D 530

Patent

active

061098779

ABSTRACT:
The invention provides a turbine blade retention device installed in an axially extending gap between the blade root bottom and the slot floor. The retention device has two parts: a blade root retention clip and a spacer bar. The clip has an elongated web of a selected web thickness and width less than the width of the slot floor. The clip includes a forward and a rearward transverse flange extending radially outwardly and extending laterally from forward and rearward ends of the web. The flanges serve to engage the forward and rearward faces of the rotor hub disk respectively, and to engage forward and rearward faces of an associated blade root. The height of at least one flange is less than the gap depth to permit conventional sliding installation the blade root. The spacer bar is installed in the gap between the clip and slot floor to hold the clip radially outward in engagement with the forward and rearward faces of the blade root. The spacer bar has a thickness that, together with the clip web thickness, substantially equals the gap depth. Preferably, the spacer bar extends axially through the gap and has forward and rearward bent over tabs for engaging the forward and rearward faces of the rotor disk hub.

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