Damping arrangement for a blade of an axial turbine

Details Damping arrangement for a blade of an axial turbine Damping arrangement for a blade of an axial turbine

2007-11-27

2007-11-27

Look, Edward K. (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Laminated, embedded member or encased material

C416S232000

Reexamination Certificate

active

10997885

ABSTRACT:
A damping arrangement for a blade (20) of an axial turbine, in particular a gas turbine, includes a damping element (17) which is arranged in a recess (16) in the blade aerofoil (10) of the blade (20) and frictionally dampens the vibrations of the blade (20). In such a damping arrangement, simplified manufacture and assembly and a reliable and effective function are achieved by the recess being configured as a cavity (16) extending in the radial direction through the inside of the blade aerofoil (10), the damping element (17) being inserted in the radial direction into said cavity (16).

REFERENCES:
patent: 2809802 (1957-10-01), Suits
patent: 2984453 (1961-05-01), Heymann
patent: 4460314 (1984-07-01), Fuller
patent: 5284011 (1994-02-01), Von Benken
patent: 6607359 (2003-08-01), Von Flotow
patent: 6676380 (2004-01-01), Davis et al.
patent: 535460 (1931-10-01), None
patent: 553716 (1932-06-01), None
patent: 1 090 231 (1960-10-01), None
patent: 01/49975 (2001-07-01), None
Search Report from 103 56 237.0 (Mar. 2, 2004).

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