Movable spike, variable entrance geometry pipe diffuser with vib

Details Movable spike, variable entrance geometry pipe diffuser with vib Movable spike, variable entrance geometry pipe diffuser with vib

1985-03-26

1987-07-07

Garrett, Robert E.

Rotary kinetic fluid motors or pumps

Selectively adjustable vane or working fluid control means

415119, 415157, 415167, 138 45, F04D 2946

Patent

active

046783962

ABSTRACT:
A movable spike, variable entrance geometry annular pipe-type diffuser has, for prevention and suppression of flow-induced vibrations, a gear assembly for imparting rotational motion about the axis of a rod member supporting the spike in the diffuser channel, and damper guides fixed to the spike and cooperating with guide slots in the diffuser housing for opposing the rotational motion to create a biasing torque between the spike and housing to increase rigidity and damping.

REFERENCES:
patent: 2557435 (1951-06-01), Imbert
patent: 2810545 (1957-10-01), Buchi
patent: 2831505 (1958-04-01), Menard
patent: 2947136 (1960-08-01), Hausmann
patent: 3768507 (1973-10-01), Dicken, Jr.
patent: 3841789 (1974-10-01), Corrigan et al.
patent: 3908694 (1975-09-01), Spears
patent: 4375939 (1983-03-01), Mount et al.

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