Patent ID: 6099248
Filing Date: 2000-08-08
Classification: F01D

Abstract:
An output stage of an axial-flow turbine comprising: a row of curved vanes and a row of narrowed twisted blades, the curved vanes having, in an axial direction, a positive sweep at their rotor-side end, head, and a negative sweep at their stator-side end, with respect to a run of the rotor-side channel boundary, and that in an area of a stator-side channel boundary a negative sweepback predominates, so that between the curved vanes and the twisted blades an axial diffusor that steadily widens toward the stator-side channel boundary is formed such that an increasing delay of an axial component of a flow agent can occur, and wherein the negative sweep at the stator-side end is formed such that at least one of a vane trailing edge and a vane leading edge is directed substantially perpendicularly to the stator-side channel boundary.