US 12,006,831 B1
Damper element with spring-suspended bearing member for vibration dampening system for turbine blade
Zachary John Snider, Pelzer, SC (US)
Assigned to GE Infrastructure Technology LLC, Greenville, SC (US)
Filed by GE Infrastructure Technology LLC, Greenville, SC (US)
Filed on Jun. 29, 2023, as Appl. No. 18/343,928.
Int. Cl. F01D 25/26 (2006.01); B33Y 80/00 (2015.01); F01D 5/26 (2006.01); F01D 25/06 (2006.01)
CPC F01D 25/06 (2013.01) [B33Y 80/00 (2014.12); F01D 5/26 (2013.01); F05D 2250/25 (2013.01); F05D 2250/311 (2013.01); F05D 2260/96 (2013.01)] 20 Claims
OG exemplary drawing
 
10. A vibration dampening system for a rotating blade of a turbine, the vibration dampening system comprising:
a plurality of stacked damper elements for positioning in a body opening defined in the rotating blade, each damper element including:
a base member having an axially fixed position within the body opening; and
a spring-suspended bearing member having a spring fixedly coupled to the base member at a first end of the spring and a bearing member coupled to a second end of the spring;
wherein, with the spring in an elastically extended state under influence of a centrifugal force caused by rotation of the rotating blade at higher than a predefined rotational speed, the bearing member frictionally engages a first bearing surface to dampen vibration.