US 5,397,216 AGranted

Flow divider for radial-axial inlet housings

AssigneeAsea Brown Boveri AG

InventorFranz Kreitmeier

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Abstract

In a radial-axial inlet housing of rotating thermal machines, a flow divider is disposed in the turbine or compressor inlet, in front of the inlet and opposite the first turbine guide vane row or the compressor ribs. The flow divider in this case is disposed in the central lower stagnation point of the housing flow. It has a thick-headed profile with a straight median line. The rear side of the flow divider, seen in the direction of flow, is disposed perpendicularly to the rotary shaft at a distance from the first guide vane row or the ribs. There is a gap between the radially inner side of the flow divider and the housing wall, and the chord length of the flow divider decreases radially outwardly. The leading edge of the flow divider, seen in the direction of flow, is inclined like a straightened potential line relative to the housing wall.

Claims11

Dependent claims

A flow divider in a radial-axial inlet housing of a rotating thermal machine having a rotor comprising:

a flow divider disposed opposite one of a turbine inlet in front of a first guide vane row, and a compressor inlet in front of ribs;
the flow divider being disposed in a central lower stagnation point of a housing flow;
the flow divider having a profile that is thicker in a head portion and tapering at a rear portion and a straight median line;
a rear edge of the flow divider in the direction of flow being disposed perpendicular to a rotor axis at a predetermined distance from one of the first guide vane row and the ribs;
the height of the flow divider being selected so that there is a gap between a radially inner side of the flow divider and a housing wall;
a chord length of the flow divider decreasing continuously from the radial inner side outwardly;
and
a leading edge of the flow divider in the direction of flow inclined relative to a radial plane.

5 more elements

Dependencies are inferred from the claim text.