Device for centering a tube in a turbine shaft

Details Device for centering a tube in a turbine shaft Device for centering a tube in a turbine shaft

2006-02-28

2006-02-28

Verdier, Christopher (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Ambient fluid or exhaust gas directed through hub, fairing...

C416S09600A, C416S09700R, C416S248000, C415S111000, C415S115000, C415S216100

Reexamination Certificate

active

07004725

ABSTRACT:
A device for centering a component positioned inside and rotationally secured at its end to a turbine hollow shaft positioned in a gas turbine engine. The device includes a sheath enclosing and solidly joined to the component, and an elastic ring interposed between the sheath and the shaft. The ring includes a plurality of pairs of opposed shoes extending radially outwardly therefrom and configured to radially expand so as to extend against an inner portion of the shaft. The shoes include thin, elastic cylindrical walls having an external diameter configured slightly less than the internal diameter of the shaft prior to assembly onto the shaft, and arranged to expand to the inner wall of the shaft when assembled thereon.

REFERENCES:
patent: 2222494 (1940-11-01), Barlow
patent: 2554368 (1951-05-01), Ledwith
patent: 3556676 (1971-01-01), Gorbunov et al.
patent: 4872767 (1989-10-01), Knapp
patent: 5073036 (1991-12-01), Sutton et al.
patent: 5603574 (1997-02-01), Ide et al.
patent: 6162018 (2000-12-01), Beeck et al.

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