Device for damping vibrations of mobile turbine blades

Details Device for damping vibrations of mobile turbine blades Device for damping vibrations of mobile turbine blades

1983-03-14

1984-11-06

Yuen, Henry C.

Fluid reaction surfaces (i.e., impellers)

Specific working member mount

Blade received in well or slot

416500, 416145, F01D 532

Patent

active

044809590

ABSTRACT:
A device for damping vibrations of mobile turbine blades, in which the roots of the blades are engaged in recesses distributed over the periphery of a rotor disk on which is anchored, under the rim of the disk, a leading edge flange consisting of sections and a trailing edge flange consisting of a single annular part against which the blade roots and the teeth of the disk rest. Between the root of a blade and the bottom of the recess of the disk is placed, behind the forward flange, a shim in the shape of a wedge which, under the action of centrifugal force, exerts on the blade a force that causes the blade to slide axially so that it contacts trailing edge retaining flange.

REFERENCES:
patent: 2836392 (1958-05-01), Spaeth
patent: 3181835 (1965-05-01), Davis
patent: 3455537 (1969-07-01), Kozlin et al.
patent: 3689177 (1972-09-01), Klassen
patent: 3768924 (1973-10-01), Corsmeier et al.
patent: 3887298 (1975-06-01), Hess et al.
patent: 4021138 (1977-05-01), Scalzo
patent: 4108571 (1978-08-01), Mawson
patent: 4192633 (1980-03-01), Herzner

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