Axial turbine and method for discharging a flow from an axial turbine
AssigneeALSTOM Technology Ltd
InventorsSaid Havakechian, Thomas Mokulys, Vishal Borikar, Patrick Vu
Life of this patent
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Abstract
An axial turbine (1) has a plurality of expansion stages (2) each defined by stator blades (13) and rotor blades. The expansion stages (2) are followed by an exhaust diffuser (4) for collecting the flow passing through the expansion stages (2) and discharging it to the outside. The expansion stages (2) and/or the diffuser (4) have at least a non-axial symmetric portion. The stator blades (13) define different openings (17) along the circumference of the turbine.
Claims12
An axial turbine comprising:
- a plurality of expansion stages each including and defined by stator blades and rotor blades;
- a diffuser fluidly downstream of the expansion stages configured and arranged to collect the flow passing through the expansion stages and discharge it;
- wherein the expansion stages, the diffuser, or both have at least a non-axial symmetric portion;
- wherein stator blades of at least one of the expansion stages define different openings along the circumference of the turbine than openings between other stator blades of the same expansion stage.
A method for discharging a flow from an axial turbine having a plurality of expansion stages followed by a diffuser for collecting and discharging the flow passing through the expansion stages, wherein the expansion stages, the diffuser, or both have at least a non-axial symmetric portion, the method comprising:
- differently driving the flow with the stator blades within the expansion stages according to the angular position along the circumference of the turbine.
Dependencies are inferred from the claim text.