SWIRL INTERRUPTION SEAL TEETH FOR SEAL ASSEMBLY

摘要

A seal assembly for sealing between a rotating component and a stationary component in a turbomachine. The seal assembly includes a plurality of radially inwardly projecting, axially spaced teeth extending from the stationary component, wherein at least one of the plurality of teeth has at least one axially extending hole therethrough. Axial flow of an operating fluid through the holes acts as an air-curtain to interrupt swirl flow in a seal cavity, therefore reducing steam force that could act to destabilize rotordynamics.

主权项

1. A seal assembly for sealing between a rotating component and a stationary component in a turbomachine, the seal assembly comprising:
a plurality of radially inwardly projecting, axially spaced teeth extending from the stationary component, wherein at least one of the plurality of teeth has at least one axially extending hole therethrough, the axially extending hole extending through the at least one of the plurality of teeth from an upstream, high-pressure side to a downstream, low-pressure side of the at least one tooth and being distanced radially inwardly from a radially innermost surface of an arcuate packing ring, wherein the upstream, high-pressure side is in fluid communication with the downstream, low-pressure side via the at least one axially extending hole.