Apparatus and method for preventing axial movement of a disc alo

Fluid reaction surfaces (i.e. – impellers) – Specific working member mount – Turbo machine

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403261, 403DIG7, F01D 502

Patent

active

051619512

ABSTRACT:
An apparatus and method are provided for preventing axial movement of a disc along the shaft on which it is shrunk. The apparatus features a set of arcuate retainers having one portion disposed in a circumferentially extending groove in the disc face and another portion disposed in a circumferentially extending groove in the shaft outer surface. The retainers are installed by inserting them one at a time into an entry slot in the disc adjacent the groove. The last retainer is a locking retainer and is attached to a closure piece by locking screws threaded into two holes drilled at the intersection between the closure piece and locking retainer so that one half of the circumference of the hole is formed in the closure piece and the other half of the circumference of the hole is formed in the locking retainer.

REFERENCES:
patent: 3853413 (1974-12-01), Parran
patent: 4288172 (1981-09-01), Livesay et al.
patent: 4405251 (1983-09-01), Kolchinsky et al.
patent: 4892432 (1990-01-01), Cooper
D. Oeynhausen et al., "Reliable Disk-Type Rotors for Nuclear Power Plants", Proceedings of the American Power Conference, (1987).

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