Blade fixing arrangement for a turbomachine rotor

Details Blade fixing arrangement for a turbomachine rotor Blade fixing arrangement for a turbomachine rotor

1990-01-04

1991-05-28

Kwon, John T.

Fluid reaction surfaces (i.e., impellers)

Specific working member mount

Blade received in well or slot

416217, 416500, F01D 530

Patent

active

050189417

ABSTRACT:
Each blade of a turbomachine rotor is secured to the drum of the rotor by upstream and downstream legs on the radially inner side of the blade platform cooperating with upstream and downstream annular beads on the periphery of the durm, and a locking plate holding the legs in position. The end of the upstream leg is received in an annular groove in the upstream bead, and the downstream leg has an aperture which receives a tongue projecting from a collar on the downstream bead. the downstream leg ends in a cylindrical bearing surface acting on a cylindrical bearing surface of the drum, and includes two hooks on its donwstream face. The locking plate is located in an annular groove of the drum at the downstream edge of the cylindrical bearing surface and has first tongues engaging with the hooks on the downstream leg and second locating tongues at each end.

REFERENCES:
patent: 2654565 (1963-10-01), Feilden
patent: 2654566 (1953-10-01), Boyd et al.
patent: 3023998 (1962-03-01), Sanderson, Jr.
patent: 3063674 (1962-11-01), Middlebrooks, Jr.
patent: 4492517 (1985-01-01), Klompas
patent: 4687413 (1987-08-01), Prario
patent: 4856963 (1989-08-01), Klapproth et al.

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