Patent ID: 6655696
Filing Date: 2003-12-02
Classification: F16J

Abstract:
A seal carrier for a rotary machine comprising:a seal; a packing ring coupled to said seal, said packing ring comprising a plurality of channels disposed therein; a spring disposed adjacent said packing ring and disposed to provide a radial force to said packing ring; and a plurality of displacement apparatuses disposed in said plurality of channels for radially positioning said seal to control a flow of a fluid in a fluid path; wherein said displacement apparatuses are coupled by a conduit, said conduit disposed to provide a fluid medium to each of said displacement apparatuses, and wherein each of said displacement apparatuses comprises at least one return displacement mechanism disposed in said displacement apparatus to oppose a radial displacement force acting on said displacement apparatus by said fluid medium; wherein said seal carrier is coupled to a casing such that ends of said displacement apparatuses abut said casing.