Output stage for an axial-flow turbine

Details Output stage for an axial-flow turbine Output stage for an axial-flow turbine

1998-11-12

2000-08-08

Look, Edward K.

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Plural distributing means immediately upstream of runner

415185, 4152082, 4152101, F01D 102

Patent

active

060992484

ABSTRACT:
An output stage of an axial-turbine having a high channel divergence has a row of curved vanes and a row of narrowed twisted blades. The curved vanes include, 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. 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 diffuser that steadily widens toward the stator-side channel boundary is formed. As a result, an increasing delay of an axial component of a flow agent can occur. 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.

REFERENCES:
patent: 4470755 (1984-09-01), Bessay
patent: 4826400 (1989-05-01), Gregory
patent: 5249922 (1993-10-01), Sato et al.

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