Patent ID: 6824355
Filing Date: 2004-11-30
Classification: F01D,F05D

Abstract:
A guide-vane system for an axial-flow exhaust-gas turbine, comprising: a casing wall defining an exhaust gas flow passage;guide vanes which are arranged symmetrically about the turbine axis in a flow passage and of which each has a vane shank extending radially outward from the flow passage through the casing wall, a pivoting device, for pivoting the guide vanes about a pivot axis defined by the vane shank, the pivoting device having an adjusting ring mounted outside the flow passage with its outer surface on rolling elements and rotatable about the turbine axis, an adjusting lever transmitting a torque from the adjusting ring to the vane shank of each guide vane, and the rolling elements being in the form of one-armed levers which are mounted so as to be pivotable on a supporting ring.