Gas turbine engine preswirler with angled holes
AssigneeSolar Turbines Incorporated
InventorsHongzhou Xu, Michael D. Fox, Scott L. Stafford, Edward T. Ramirez
Life of this patent
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Abstract
A gas turbine engine preswirler (470) includes an outer ring (471) and an inner ring (472). The inner ring (472) includes a plurality of angled holes (490). Each angled hole (490) follows a vector which is angled in at least one plane. A component of the vector is located on a plane perpendicular a radial from an axis of the preswirler (470). The component of the angle is angled relative to an axial direction of the preswirler (470).
Claims19
A gas turbine engine preswirler, comprising:
- an outer ring;
- and
- an inner ring having
- a plurality of angled holes, each angled hole following a vector which is angled in at least one plane with a component of the vector being located on a plane perpendicular to a radial extending from an axis of the preswirler, the component of the vector being angled relative to an axial direction of the preswirler;
- and
- a plurality of first stress relief regions, each first stress relief region being contiguous to one of the plurality of angled holes with each first stress relief region having a curved and an elongated profile, the first stress relief region being wider than a diameter of the one of the plurality of angled holes.
A gas turbine engine preswirler, comprising:
- an outer ring;
- and
- an inner ring having
- a plurality of angled holes, each angled hole following a vector which is angled in at least one plane with a component of the vector being located on a plane perpendicular to a radial extending from an axis of the preswirler, the component of the vector being angled from sixty-five to eighty degrees relative to an axial direction of the preswirler, and
- a plurality of first stress relief regions, each stress relief region being contiguous to one of the plurality of angled holes with each first stress relief region having an elongated scoop shape, the elongated scoop shape being wider than a diameter of the contiguous angled hole and biased away from the contiguous angled hole along the component of the vector.
A method for forming a preswirler, the method comprising:
- forming an angled hole through the preswirler at an angle from twenty to eighty-five degrees relative to an axial direction of the preswirler;
- forming a first stress relief region contiguous the angled hole, the first stress relief region being configured to be in flow communication with the angled hole.
Dependencies are inferred from the claim text.