Impingement Cooling System for Use with Contoured Surfaces

• US 20130177396A1
• Filed: 01/09/2012
• Published: 07/11/2013
• Est. Priority Date: 01/09/2012
• Status: Active Grant

• Current Assignee: GE Infrastructure Technology, LLC (GE Vernova, Inc.)
• Original Assignee: General Electric Company
• Inventors: Winn, Aaron Gregory
• Granted Patent: US 9,039,350 B2
• Time in Patent Office: Days
• US Class Current: 415/115
• CPC Class Codes: F01D 25/08 Cooling of machines or engines in general F01P; Heating; Heat-insulation of blade-carrying members, of blades F01D5/00
• CPC Class Codes: F01D 5/186 Film cooling F01D5/187 takes precedence
• CPC Class Codes: F01D 5/187 Convection cooling
• CPC Class Codes: F01D 9/065 Fluid supply or removal conduits traversing the working fluid flow, e.g. for lubrication-, cooling-, or sealing fluids see also F01D25/16, F01D25/24 and F01D25/26
• CPC Class Codes: F05D 2240/81 Cooled platforms
• CPC Class Codes: F05D 2260/201 by impingement of a fluid

Abstract

The present application provides an impingement cooling system for use with a contoured surface. The impingement cooling system may include an impingement plenum and an impingement plate with a linear shape facing the contoured surface. The impingement surface may include a number of projected area thereon with a number of impingement holes having varying sizes and varying spacings.

Claims

1. An impingement cooling system for use with a contoured surface, comprising:

an impingement plenum;

an impingement plate facing the contoured surface;

the impingement plate comprising a linear shape;

the impingement plate comprising a plurality of projected areas thereon;

wherein the plurality of projected areas comprises a plurality of impingement holes with varying sizes and varying spacings.

2. The impingement cooling system of claim 1, wherein the plurality of projected areas comprises a first area with impingement holes of a first size and a second area with impingement holes of a second size.

3. The impingement cooling system of claim 1, wherein the plurality of projected areas comprises a first area with impingement holes of a first spacing and a second area with impingement holes of a second spacing.

4. The impingement cooling system of claim 1, wherein the plurality of projected areas comprises a first area with impingement holes of a first size and a first spacing and a second area with impingement holes of a second size and a second spacing.

5. The impingement cooling system of claim 1, wherein the contoured surface comprises a plurality of contoured areas and wherein the plurality of contoured areas are positioned at a plurality of distances from the impingement plate.

6. The impingement cooling system of claim 5, wherein the size and the spacing of the plurality of impingement holes in each of the plurality of projected areas varies with the distance to an opposed contoured area.

7. The impingement cooling system of claim 1, wherein the impingement plenum comprises a cavity defined between the impingement plate and a cover plate.

8. The impingement cooling system of claim 1, wherein the impingement plenum is in communication with a cooling flow in a cooling conduit.

9. The impingement cooling system of claim 1, wherein the impingement plate maintains the contoured surface with substantially constant heat transfer coefficients thereacross.

10. A turbine, comprising:

a turbine nozzle;

an impingement cooling system;

the impingement cooling system comprising a plurality of impingement holes with a plurality of sizes and spacings; and

a turbine component positioned about the impingement cooling system;

the turbine component comprising a contoured surface.

11. The turbine of claim 10, wherein the impingement cooling system comprises an impingement plenum with an impingement plate with the plurality of impingement holes therein.

12. The turbine of claim 11, wherein the impingement plate comprises a linear shape.

13. The turbine of claim 11, wherein the impingement plate comprises a grid with a plurality of projected areas.

14. The turbine of claim 13, wherein the plurality of projected areas comprises the plurality of impingement holes therein.

15. The turbine of claim 13, wherein the plurality of projected areas comprises a first area with impingement holes of a first size and a second area with impingement holes of a second size.

16. The turbine of claim 13, wherein the plurality of projected area comprises a first area with impingement holes of a first spacing and a second area with impingement holes of a second spacing.

17. The turbine of claim 13, wherein the plurality of projected areas comprises a first area with impingement holes of a first size and a first spacing and a second area with impingement holes of a second size and a second spacing.

18. The turbine of claim 13, wherein the contoured surface comprises a plurality of contoured areas and wherein the plurality of contoured areas are positioned at a plurality of distances from the impingement plate.

19. The turbine of claim 10, wherein the impingement cooling system maintains the contoured surface with substantially constant heat transfer coefficients thereacross.

20. A turbine, comprising:

a turbine nozzle;

an impingement cooling system;

the impingement cooling system comprising a linear impingement plate with a plurality of impingement holes with a plurality of sizes and spacings; and

a turbine component positioned about the impingement cooling system;

the turbine component comprising a contoured surface such that the impingement cooling system maintains the contoured surface with substantially constant heat transfer coefficients thereacross.