Blade damper

Details Blade damper Blade damper

1981-06-18

1982-10-26

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

With weight-balancing means

Self-shifting or selectively adjustable mass

416190, 416193A, 416500, F01D 516

Patent

active

043559573

ABSTRACT:
This invention relates to the construction of a turbine rotor having a rotor disc with a plurality of blades, said blades having roots fitted into slots around the periphery of the disc with each blade engaging a stop means to properly position it, said blades being held in place by a cover plate fixed to the rotor disc and said stop means; a pocket is formed on the front face of each blade while an annular groove on said cover plate is positioned over said circumferential ring of pockets. Each pocket has an outer flat surface placed at an angle so that each surface intersects the outer surface of the annular groove; a stiff solid damper having a rectangular surface is positioned in each pocket so that one end of said surface will be supported by the outer surface of the annular groove while the other end of said surface will be supported by the outer surface of the pocket when the damper is thrown outwardly by centrifugal force.

REFERENCES:
patent: 2999668 (1961-09-01), Howald et al.
patent: 3181835 (1965-05-01), Davis
patent: 3748060 (1973-07-01), Hugoson et al.
patent: 3881844 (1975-05-01), Hennessey et al.
patent: 3888601 (1975-06-01), Glassburn
patent: 4182598 (1980-01-01), Nelson

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