Turbine blade rail damper

摘要

A device for damping of vibratory energy in the blades of rotor assemblies during operation where the blades have a shroud attached thereto with at least one sealing rail extending radially outward from the shroud to an outer diameter surface. A damper element is attached to the turbine blade sealing rail extending radially inward from the rail outer diameter surface along rail sides to maintain the damper element out of the flow of gas and positioned at a radial location on the blade for damping.

主权项

1. A rotor for use with a turbine having a plurality of blades extending radially outward, comprising:
a plurality of shrouds, each shroud being positioned radially outward of and attached to one of the blades; a plurality of sealing rails, each sealing rail extending radially outward from each shroud, each sealing rail having a slot at each radial face of the sealing rail, wherein each slot is generally perpendicular to a corresponding radial face of the sealing rail, and wherein each slot extends from an upstream face to a downstream face of the sealing rail; and a plurality of damper elements, each damper element being positioned in and extending between adjacent slots of opposing radial faces of adjacent sealing rails.