Vibration damping for turbine blades

Details Vibration damping for turbine blades Vibration damping for turbine blades

1995-11-16

1998-01-20

Kwon, John T.

Rotary kinetic fluid motors or pumps

With control means responsive to motion developed fluid...

F01D 1700

Patent

active

057095272

ABSTRACT:
In a device for damping blade vibrations of an axial-flow turbomachine, the ends of the rotating blades form a seal toward the flow-limiting wall of a turbine casing. A ring of permanently magnetic material is attached to this flow-limiting wall of the turbine casing in the radial direction opposite the blade ends, which ring consists of at least one or more sectional rings of the same or different magnetic polarization. The blade ends are each provided with a cover plate which is made of a material which is a good electrical conductor.

REFERENCES:
patent: 3185441 (1965-05-01), Reuter
patent: 4295803 (1981-10-01), Barthelmess
patent: 4809354 (1989-02-01), Kawashima
patent: 5490759 (1996-02-01), Hoffman

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