Turbomachine wheel with mounted blades

Details Turbomachine wheel with mounted blades Turbomachine wheel with mounted blades

1991-09-05

1992-12-08

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Specific working member mount

Blade received in well or slot

416219R, 416221, F01D 532, F01D 530

Patent

active

051692899

ABSTRACT:
Turbomachine wheel having blades mounted on a rotor including an annular peripheral ring in which are formed open axial recesses each of which receives the root of a blade. Each blade is radially retained in the recess by cooperation of complementary shapes of the fir tree type, with a direction of fitting being parallel to the axis of the rotor. The blade root is axially immobilized in the recess by a first flange and a second flange which are respectively disposed adjacent to the opposite lateral faces of the rotor, and at least partly close the opposite axial ends of the recesses for the roots of the blades. The first flange is fastened to the rotor by a bayonet type device whose lugs are formed on the first flange and are received in notches formed in the annular ring of the rotor with open ends of the notches for engagement of the lugs opening onto the transverse walls which define the recesses. The second flange is maintained in position clamped by an axial clamping ring mounted in a prestressed condition.

REFERENCES:
patent: 3043562 (1962-07-01), Van Nest et al.
patent: 3295825 (1967-01-01), Hall, Jr.
patent: 3814539 (1974-06-01), Klompas
patent: 4171930 (1979-10-01), Brisken et al.
patent: 4767276 (1988-08-01), Barnes et al.

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