US 11,879,498 B2
Rotor damping devices for a turbomachine
Richard Schmidt, Loveland, OH (US); Narayanan Payyoor, Bangalore (IN); and Peeyush Pankaj, Bangalore (IN)
Assigned to General Electric Company, Schenectady, NY (US)
Filed by General Electric Company, Schenectady, NY (US)
Filed on Jan. 4, 2021, as Appl. No. 17/140,925.
Prior Publication US 2022/0213793 A1, Jul. 7, 2022
Int. Cl. F16C 27/04 (2006.01); F01D 5/26 (2006.01); F01D 25/16 (2006.01)
CPC F16C 27/045 (2013.01) [F01D 5/26 (2013.01); F01D 25/164 (2013.01); F05D 2260/96 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A rotor damping device for a turbomachine, comprising:
a first fluid damper;
a second damper in communication with the first fluid damper, the second damper comprising a wire mesh;
a sidewall portion radially inside a static structure; and
a squirrel cage configured to take up an axial load, the second damper mounted on the squirrel cage,
wherein the first fluid damper transitions between a working condition in which the first fluid damper dampens vibration of the turbomachine and an interruption condition in which the first fluid damper does not dampen vibration of the turbomachine,
wherein, during the interruption condition, the wire mesh of the second damper dampens vibration of the turbomachine; and
wherein the wire mesh is contained within the sidewall portion to constrain axial deflection and apply a preload,
wherein the second damper is in parallel configuration with the first fluid damper.