High frequency dynamics resonator assembly

• US 7,080,514 B2
• Filed: 08/15/2003
• Issued: 07/25/2006
• Est. Priority Date: 08/15/2003
• Status: Active Grant

• Current Assignee: Siemens Energy Incorporated (Siemens AG)
• Original Assignee: Siemens Power Generation, Inc.
• Inventors: Ryan, William, Bland, Robert
• Primary Examiner(s): KIM, TAE JUN
• Application Number:
  US10/644,563
• Publication Number:
  US 20050034918A1
• Time in Patent Office: 1,075 Days
• Field of Search: 607/25, 607/59, 607/54, 607/55, 607/56, 607/57, 431/114, 181/213, 181/220
• US Class Current: 60/725
• CPC Class Codes: F05B 2260/96 Preventing, counteracting or reducing vibration or noise
• CPC Class Codes: F23M 20/005 Noise absorbing means
• CPC Class Codes: F23R 2900/00014 Reducing thermo-acoustic vibrations by passive means, e.g. by Helmholtz resonators silence apparatus using resonance F01N1/023

Abstract

Aspects of the invention relate to resonator assemblies for use in non-uniform flow environments. The resonator assemblies include one or more features, such as a box or a scoop, for substantially equalizing the pressure on the resonator. In the box configuration, a box is attached on top of the resonator. The box has a top plate with a plurality of openings and at least one side wall extending from the entire periphery of the top plate. A plenum is defined between the box and the resonator plate. In the scoop configuration, a scoop is attached to the top of the resonator such that the scoop substantially overhangs the resonator. The scoop includes at least one side wall extending substantially perpendicularly therefrom, except for one side without a side wall so as to provide an opening into a space defined between the scoop and the resonator.

Claims

1. A resonator assembly comprising:

a turbine engine component having a plurality of opening therein;

a resonator body including a plate having a plurality of openings therein and at least one side wall extending from and about the entire periphery of the plate, the at least one side wall being attached to the turbine engine component such that the resonator body encloses at least some of the plurality of openings in the turbine engine component, wherein a cavity is defined between the turbine engine component and the resonator body; and

a scoop including a top plate and at least one side wall extending substantially perpendicularly therefrom, the at least one side wall of the scoop attached to the resonator body such that the scoop is disposed above the resonator and such that the top plate substantially overhangs the plate;

wherein the scoop includes one side without a side wall so as to provide an opening into a space defined between the scoop and the resonator plate;

whereby the scoop captures a passing fluid so as to substantially equalize the pressure impinging on the resonator plate.

2. The resonator assembly of claim 1 wherein the at least one side wall of the resonator extends substantially perpendicularly from the resonator plate.

3. The resonator assembly of claim 1 wherein the at least one side wall of the scoop is attached to the resonator by one of welding or brazing.

4. The resonator assembly of claim 1 wherein the top plate of the scoop and the resonator plate are spaced substantially equidistant.

5. The resonator assembly of claim 1 wherein the top plate of the scoop and the resonator plate are curved.

6. The resonator assembly of claim 1 wherein the spacing between the top plate of the scoop and the resonator plate is from about 1 millimeter to about 2 millimeters.

7. The resonator assembly of claim 1 wherein the resonator plate includes front and rear ends, the front and rear ends being disposed at different elevations.

8. The resonator assembly of claim 7 wherein the difference in elevation between the front and rear ends is from about 1 millimeter to about 3 millimeters.

9. The resonator assembly of claim 7 wherein the rear end of the resonator plate is disposed higher than the front end.

10. The resonator assembly of claim 7 wherein one side of the top plate of the scoop is attached to the rear end of the resonator plate such that the opening is at the front end.

11. The resonator assembly of claim 1 wherein the resonator and scoop include an axial length and a circumferential length, wherein the axial length is greater than the circumferential length.

12. The resonator assembly of claim 1 wherein the resonator and scoop include an axial length and a circumferential length, wherein the circumferential length is greater than the axial length.

13. The resonator assembly of claim 1 wherein the top plate of the scoop includes at least one opening.

14. A resonator assembly comprising:

a turbine engine component having an outer peripheral surface, an inner peripheral surface, and a plurality of passages extending through the component from the inner peripheral surface to the outer peripheral surface,

a resonator body including a substantially rectangular plate having a periphery, a plurality of openings extending through the plate, the body further including a side wall extending substantially perpendicularly away from and about the entire periphery of the top plate, wherein the side wall of the resonator body is attached to the outer peripheral surface of the component so as to enclose at least some of the plurality of passages, wherein a cavity is defined between the outer peripheral surface of the component and the resonator body; and

a scoop including a substantially rectangular top plate having a periphery and a side wall extending substantially perpendicularly away from and about the top plate, wherein one side of the periphery of top plate does not have a side wall extending therefrom so that there is an opening into a space defined between the scoop and the resonator plate, wherein the side wall of the scoop is attached to the resonator body such that the scoop top plate substantially overhangs the resonator top plate resonator, wherein the space and the cavity are in fluid communication by way of the plurality of openings in the plate of the resonator body,

whereby the scoop captures a passing fluid so as to substantially equalize the pressure impinging on the resonator plate.

15. The resonator assembly of claim 14 wherein the scoop top plate and the resonator plate are spaced substantially equidistant.

16. The resonator assembly of claim 14 wherein the scoop top plate and the resonator plate are circumferentially curved.

17. The resonator assembly of claim 14 wherein the spacing between the scoop top plate and the resonator plate is from about 1 millimeter to about 2 millimeters.

18. The resonator assembly of claim 14 wherein the scoop top plate includes at least one opening.

19. The resonator of claim 14 wherein the turbine engine component is a combustor component.

20. The resonator of claim 14 wherein the turbine engine component is substantially circular.