US 12,371,998 B2
Nested damper pin and vibration dampening system for turbine nozzle or 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. 18/343,980.
Prior Publication US 2025/0003344 A1, Jan. 2, 2025
Int. Cl. F01D 5/26 (2006.01); F01D 5/10 (2006.01)
CPC F01D 5/26 (2013.01) [F01D 5/10 (2013.01); F05D 2260/96 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A damper pin for a vibration dampening system for a turbine nozzle or blade, the damper pin comprising:
an outer body having defined therein an inner opening and a plurality of side openings extending from the inner opening through an outer surface of the outer body; and
an inner body nested and movable within the inner opening of the outer body, the inner body including a first portion including a plurality of arms, each arm extending through a respective side opening of the plurality of side openings of the outer body,
wherein the plurality of arms defines an outer dimension greater than an outer dimension of the outer body, the outer dimension of the plurality of arms being configured to engage an inner surface of a body opening in the turbine nozzle or blade in which the damper pin is positioned.
 
3. A damper pin for a vibration dampening system for a turbine nozzle or blade, the damper pin comprising:
an outer body having defined therein an inner opening and a plurality of side openings extending from the inner opening through an outer surface of the outer body; and
an inner body nested and movable within the inner opening of the outer body, the inner body including a first portion including a plurality of arms, each arm extending through a respective side opening of the plurality of side openings of the outer body, wherein the inner body further includes:
a second portion having an outer surface configured to frictionally engage a first section of the inner opening of the outer body,
a third portion extending through a second section of the inner opening of the outer body in a spaced manner, and
wherein the first portion of the inner body including the plurality of arms is positioned between the second portion and the third portion of the inner body.
 
9. A vibration dampening system for a turbine nozzle or blade, the vibration dampening system comprising:
a plurality of stacked damper pins, each damper pin including:
an outer body having defined therein an inner opening and a plurality of side openings extending from the inner opening through an outer surface of the outer body; and
an inner body nested and movable within the inner opening of the outer body, the inner body including a first portion including a plurality of arms, each arm extending through a respective side opening of the plurality of side openings of the outer body.