Vibration damping

Details Vibration damping Vibration damping

1997-04-07

1998-03-24

Kwon, John T.

Fluid reaction surfaces (i.e., impellers)

Rotor having flow confining or deflecting web, shroud or...

Axially extending shroud ring or casing

416500, F04D 2966

Patent

active

057305846

ABSTRACT:
A damper for damping non-synchronous vibration in adjacent shrouded aerofoil blades is in the form of pin which locates in confronting passages in adjacent blade shrouds. The pin is provided with larger diameter portions which are located totally within the passages and frictionally engage the surfaces of the passages to provide vibration damping. The larger diameter pin portions are interconnected by a central, thinner portion. The configuration of the pin reduces the likelihood of it wearing in such a manner that it jams in the passages and no longer provides vibration damping.

REFERENCES:
patent: 3990813 (1976-11-01), Imai
patent: 4722668 (1988-02-01), Novacek
patent: 4767273 (1988-08-01), Parttington
patent: 4776764 (1988-10-01), Ortolano
patent: 4948338 (1990-08-01), Wickerson

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