Patent ID: 6932347
Filing Date: 2005-08-23
Classification: F01D,F05D,F16J

Abstract:
1. An arrangement for a non-hermetic seal between a stator and a rotor of a turbomachine in a root region of axial-flow guide blades belonging to the stator and arranged concentrically to the rotor as a ring-shaped cascade, comprising a brush sealing ring, a guide blade root, and a spoke centering means wherein the spoke centering means includes at least three support points each having radial relative mobility and wherein the brush sealing ring is mounted on the guide blade root by the spoke centering means and whose bristles together with a rotating, cylindrical sealing surface form a fluid barrier which is permeable wherein, on a sealing side of lower operating pressure, a supporting ring for an axial, sealing support of the bristles is arranged at a slight radial distance from the rotating sealing surface and is integrally connected to the guide blade root and wherein the spoke centering means is permeable to pressure, as a result of which a same, higher operating pressure is applied to the brush sealing ring on both end faces thereof to axially pressure-relieve the brush sealing ring, with an exception of a bristle area extending radially from the rotating sealing surface up to the supporting ring.