公开(公告)号：WO2021021132A1

公开(公告)日：2021-02-04

申请号：PCT/US2019/044139

申请日：2019-07-30

Applicant: DRESSER-RAND COMPANY

Inventor： SALUNKHE, Anil L. ,  PASPULATI, Amit K. ,  CURTIN, William J.

IPC: F16J15/44

Abstract: A non-contact seal assembly for sealing a circumferential gap between a first machine component and a second machine component which is rotatable relative to the first machine component about a longitudinal axis is provided. The non-contact seal assembly includes a seal carrier, a primary seal that includes a plurality of shoes, a mid plate, a secondary seal, and a front plate. The secondary seal may comprise a plurality of sealing segments. The non-contact seal also includes a plurality of damping elements to damp vibrations of the primary seal during operation.