Inertial particle separator flow and particle bounce control
AssigneeRolls-Royce North American Technologies Inc.
InventorPhilip H. Snyder
Life of this patent
Estimating the term…
Abstract
An intertial particle seperator (IPS) including an intake air duct, a scavenge duct that shares an interior common wall with the intake air duct, a clean air duct, and a splitter. The splitter is configured to split a flow of intake air into a flow of scavenge air to pass through the scavenge duct and a flow of clean air to pass through the clean air duct. The IPS also includes a plurality of valleys on the intake air duct. The plurality of valleys includes a plurality of troughs and peaks along the interior common wall. In addition, each trough of the plurality of valleys extends along a direction of the flow of intake air.
Claims19
An intertial particle separator comprising:
- an intake air duct having a first end and a second end downstream the first end, the intake air duct configured to pass a flow of intake air from the first end to the second end;
- a scavenge duct proximate the second end of the intake air duct, wherein the intake air duct and the scavenge duct share an interior common wall;
- a clean air duct proximate the second end of the intake air duct;
- a splitter configured to split the flow of intake air into a flow of scavenge air to pass through the scavenge duct and a flow of clean air to pass through the clean air duct;
- and
- a plurality of valleys on the intake air duct, the plurality of valleys having a plurality of troughs and peaks along the interior common wall, wherein each trough of the plurality of valleys extends along a direction of the flow of intake air;
- wherein each of the plurality of valleys only increases in height in the direction of flow from a first end of the respective valley to a second end of the respective valley.
A gas turbine system comprising:
- a gas turbine having a compressor configured to compress an engine airstream;
- and
- an inertial particle separator (IPS) configured to separate particulates from a bulk air stream into a scavenge airstream, the IPS comprising:
- a bulk air duct configured to direct flow of the bulk airstream in the IPS;
- a splitter nose configured to split the bulk airstream into the scavenge airstream and the engine airstream;
- a scavenge duct proximate the splitter nose and configured to convey the scavenge airstream having particulates away from the compressor;
- a clean air duct proximate the splitter nose and configured to convey the engine airstream towards the compressor;
- and
- a plurality of furrows on at least a portion of the bulk air duct, wherein each furrow of the plurality of furrows is oriented along a flow direction of the bulk airstream and is configured to manipulate particulate velocities in the bulk airstream;
- wherein each of the plurality of furrows only increases in height in the flow direction from a first end of the respective furrow to a second end of the respective furrow.
A method of manufacturing a particle separator comprising:
- forming an air flow system, the air flow system comprising:
- an intake duct having a first end and a second end downstream the first end;
- a scavenge duct adjoined to the second end of the intake duct;
- and
- a clean air duct adjoined to the second end of the intake duct;
- and wherein the method further comprises:
- creating a plurality of valleys on at least a portion of the intake duct, wherein at least one valley of the plurality of valleys extend downstream the intake duct;
- wherein the at least one valley only increases in height in a flow direction of a bulk air flow from a first end of the at least one valley to a second end of the at least one valley, and the at least one valley extends into the scavenge duct such that the second end of the at least one valley is located in the scavenge duct.
Dependencies are inferred from the claim text.