公开(公告)号：US11230940B1

公开(公告)日：2022-01-25

申请号：US17006983

申请日：2020-08-31

Applicant: Raytheon Technologies Corporation

Inventor： Michael G. McCaffrey ,  Joseph D. Evetts ,  Kristine M. Carnavos ,  Conway Chuong ,  Christopher W. Robak ,  William Proscia ,  Purity Dele-Oni ,  Caroline Karanian ,  John E. Paul ,  Jagannath Pranatharthikaran

IPC: F01D11/02 ,  F01D11/08

Abstract: A rotational equipment assembly includes a plurality of seal shoes, a seal base, a plurality of spring elements and a secondary seal assembly. The seal shoes are arranged circumferentially around an axial centerline and include a first seal shoe. The first seal shoe includes a first seal shoe base and a first seal shoe rib that projects axially out from the first seal shoe base to an axial distal end of the first seal shoe rib. The seal base extends circumferentially around the axial centerline. The spring elements include a first spring element that connects and extends between the first seal shoe and the seal base. The secondary seal assembly is configured to seal a gap between the seal base and the seal shoes. The secondary seal assembly includes a free floating seal plate that axially contacts and is configured to slide radially along the first seal shoe rib.