Patent ID: 6821086
Filing Date: 2004-11-23
Classification: F01D,F05D,F16J

Abstract:
A seal assembly for a turbomachine having a rotary member rotatable about an axis and a stationary member circumscribing the rotary member, the rotary member having an outer circumferential region disposed in a plane normal to the axis thereof and the stationary member having a portion radially extending toward the rotary member so that the stationary member has a radially inward region facing the outer circumferential region of the rotary member, the seal assembly comprising:an annular-shaped platform on the rotary member so as to be disposed at the outer circumferential region thereof, the platform being supported radially outward from the rotary member so as to project radially outward beyond axially-adjacent outer surface regions of the rotary member, the platform having a contact region radially separated from the rotary member by a cavity therebetween; and sealing means disposed at the radially inward region of the stationary member and having a portion thereof in rubbing contact with the contact region of the platform, the platform being effective to distribute and dissipate heat generated by rubbing contact with the sealing means.