Patent ID: 9103224
Filing Date: 2015-08-11
Classification: F01D,F05D,F16J,Y10T

Abstract:
1. A sealing assembly for use with a rotating machine, the rotating machine including a stator casing including a radially inner surface that defines a cavity therein, and a rotor positioned within the cavity and spaced inwardly from the stator inner surface, said sealing assembly comprising: a support ring coupled to the stator casing; a plurality of plate members coupled to said support ring and oriented circumferentially about the rotor, each plate member of said plurality of plate members comprising a root end and a tip end, said root end coupled to said support ring, said tip end extending outwardly from said root end towards an outer surface of the rotor; a resistance member coupled to said support ring and extending inwardly from said support ring towards the rotor outer surface, said resistance member extending through said each plate member of said plurality of plate members; and a plurality of rotor lands defined circumferentially about the rotor outer surface, said tip end of said each plate member of said plurality of plate members oriented adjacent said plurality of rotor lands to form a high-pressure dynamic seal comprising a tortuous flow path between said plurality of rotor lands and said plurality of plate members to channel an axial leakage flow between said plurality of rotor lands and said plurality of plate members through said tortuous flow path and thereby reduce said axial leakage flow.