Hot section dual wall component anti-blockage system

Patent metadata

Field	Value
Publication number	US-10837314-B2
Application number	US-201816028623-A
Country	US
Kind code	B2
Filing date	Jul 6, 2018
Priority date	Jul 6, 2018
Publication date	Nov 17, 2020
Grant date	Nov 17, 2020

Abstract

A system for a hot section dual wall component in a gas turbine engine is used to avoid blockage by minimizing particulate deposits. The system includes impingement apertures formed in first wall of a cooling passageway of the dual wall component, and posts included on a second wall of the cooling passageway. The impingement apertures and the posts are respectively aligned opposite each other in the cooling passageway in operative cooperation so that working fluid exhausting into the cooling passageway from the impingement apertures in a first direction is directed to flow in a second direction along the cooling passageway to provide a laminar flow of the working fluid through the cooling passageway in order to minimize deposition of particles.

First claim

What is claimed is:

1. A system comprising:
a hot section component of a gas turbine;
a dual wall included in the hot section component, the dual wall including a first wall and a second wall, the first wall and the second wall disposed adjacently to define a cooling passageway therebetween;
the first wall formed to include a series of impingement apertures providing fluid communication between the cooling passageway and a source of cooling fluid external to the cooling passageway; and
a series of posts, each post of the series of posts extending from the second wall toward a respective one of the series of impingement apertures to align a tapered portion of each of the posts with one of the respective impingement apertures, the posts sized and positioned to receive and direct a flow of fluid into the cooling passageway, wherein each of the posts comprises a tip at a distal end of the respective posts and a base at a proximate end of the respective posts, the tip positioned between the first wall and the second wall in the cooling passageway, and the base coupled with the second wall.

2. The system of claim 1 , wherein a cross-sectional area of a base of each of the posts is greater than a cross sectional area of a tip of each of the posts, the base coupled with second wall, and one of the tip and a sidewall of the post aligned with the respective one of the series of impingement apertures.

3. The system of claim 2 , wherein the sidewall is tapered between the tip and the base.

4. The system of claim 3 , wherein the sidewall is a planar surface between the tip and the base.

5. The system of claim 3 , wherein the sidewall is a curved surface between the tip and the base having a predetermined radius of curvature.

6. The system of claim 1 , wherein each of the posts include a proximate end coupled with the second wall and a distal end axially positioned in alignment with a respective one of the impingement apertures.

7. The system of claim 1 , wherein a shape of each of the posts is a cone, a polyhedron, a half sphere or a ramp positioned on the second wall opposite a respective impingement aperture included in the first wall.

8. The system of claim 1 , wherein the series of impingement apertures are positioned in a first predetermined pattern, and the series of posts are positioned in a second predetermined pattern that matches the first predetermined pattern.

9. A system comprising:
a first wall formed to include a plurality of impingement apertures;
a second wall that includes a plurality of posts; and
a cooling passageway defined by the first wall and the second wall;
the first wall aligned with the second wall such that each of the impingement apertures are positioned opposite one of respective posts;
each of the posts extending away from the second wall into the cooling passageway toward the first wall to align a tapered portion of each of the posts with one of the respective impingement apertures, and the impingement apertures in fluid communication with the cooling passageway, wherein each of the posts comprises a tip at a distal end of the respective posts and a base at a proximate end of the respective posts, the tip positioned between the first wall and the second wall in the cooling passageway, and the base coupled with the second wall.

10. The system of claim 9 , wherein each of the posts are in fluid communication with a working fluid received from respective outlets of the impingement apertures and the tapered portion of each of the posts are aligned so that the working fluid is re-directed to flow in the cooling passageway with laminar flow.

11. A system comprising:
a first wall formed to include a plurality of impingement apertures;
a second wall that includes a plurality of posts; and
a cooling passageway defined by the first wall and the second wall;
the first wall aligned with the second wall such that each of the impingement apertures are positioned opposite one of respective posts;
each of the posts extending away from the second wall into the cooling passageway toward the first wall to align a tapered portion of each of the posts with one of the respective impingement apertures, and the impingement apertures in fluid communication with the cooling passageway, wherein each of the posts comprises a tip at a distal end of the respective posts and a base at a proximate end of the respective posts, the tip positioned in contact with the first wall, and the base coupled with the second wall.

Assignees

• Rolls Royce Corp

Inventors

• Varney Bruce E
• Barker Brett

Classifications

• Y02T50/60

  Efficient propulsion technologies, e.g. for aircraft · CPC title

• F05D2260/201

  by impingement of a fluid · CPC title

• F01D5/187 Primary

  Convection cooling · CPC title

• F05D2250/71

  curved · CPC title

• F01D25/12 Primary

  Cooling · CPC title