Turbomachine blade-to-rotor sealing arrangement
AssigneeGeneral Electric Company
InventorsHerbert Halila, Douglas Paul Beneteau
Life of this patent
Estimating the term…
Abstract
A turbomachine rotor blade having a dovetail-type base member, a platform carried by the base member, and an airfoil extending longitudinally from the platform in a direction opposite to that of the base member. The platform includes a forward seal wire groove and an aft seal wire groove, each of which is on opposite sides of the blade longitudinal axis and on the side of the platform facing the base member. The blade platform has a pair of recesses that each include a concave portion and an adjacent inclined ramp portion for urging a seal wire into surface-to-surface contact with the concave portions of the respective recesses. Wear of the blade platform caused by seal wire movement relative to the blade platform is significantly reduced.
Claims20
A turbomachine rotor blade comprising:
- a base member having a longitudinal axis and a transverse axis;
- a platform carried by the base member and extending generally transversely relative to the longitudinal axis;
- and an airfoil extending in a longitudinal direction from the platform and on a side of the platform opposite from the base member;
- wherein the platform includes at least one seal wire recess adjacent the base member and defined by a concave section for receiving a peripheral surface of a seal wire, and a ramp section extending from the concave section and inclined relative to the base member transverse axis to guide movement of a seal wire toward the concave section.
Dependencies are inferred from the claim text.