Acoustic resonator assembly having variable degrees of freedom

Patent metadata

Field	Value
Publication number	US-10062369-B2
Application number	US-201715644083-A
Country	US
Kind code	B2
Filing date	Jul 7, 2017
Priority date	Feb 5, 2015
Publication date	Aug 28, 2018
Grant date	Aug 28, 2018

Abstract

An acoustic resonator assembly may include a first acoustic liner and a second acoustic liner. The first acoustic liner may define a first plurality of openings extending between first and second surfaces thereof. The second acoustic liner may be rotatably coupled to the first acoustic liner and at least one of the first acoustic liner and the second acoustic liner may be configured to rotate relative to each other to attenuate one or more frequencies of acoustic energy generated by working fluid flowing past the acoustic resonator assembly. The second acoustic liner may define a second plurality of openings extending between first and second surfaces thereof. A number of degrees of freedom of the acoustic resonator assembly may be varied by rotating the first acoustic liner and/or the second acoustic liner.

First claim

We claim:

1. An acoustic resonator assembly, comprising:
a first annular acoustic liner defining a first plurality of openings extending between a first annular surface of the first annular acoustic liner and a second annular surface of the first annular acoustic liner opposite the first annular surface of the first annular acoustic liner;
a second annular acoustic liner defining a second plurality of openings extending between a first annular surface of the second annular acoustic liner and a second annular surface of the second annular acoustic liner opposite the first annular surface of the second annular acoustic liner; and
an annular disk defining a third plurality of openings extending between a first annular surface of the annular disk and a second annular surface of the annular disk opposite the first annular surface of the annular disk, the annular disk disposed between the first annular acoustic liner and the second annular acoustic liner, and the annular disk configured to rotate relative to the first annular acoustic liner and the second annular acoustic liner to attenuate one or more frequencies of acoustic energy generated by working fluid flowing past the acoustic resonator assembly, the annular disk being configured to rotate such that at least one opening of the first plurality of openings and at least one opening of the second plurality of openings are not overlapping.

2. The acoustic resonator assembly of claim 1 , wherein each opening of the third plurality of openings is formed from a plurality of holes, each hole of the plurality of holes extending between the first annular surface of the annular disk and the second annular surface of the annular disk, and the third plurality of openings being the same size as each of the first plurality of openings and the second plurality of openings.

3. The acoustic resonator assembly of claim 2 , wherein:
the first plurality of openings are formed in a plurality of annularly arranged rows on the first annular surface of the first annular acoustic liner;
the second plurality of openings are formed in a plurality of annularly arranged rows on the first annular surface of the second annular acoustic liner; and
the third plurality of openings are formed in a plurality of annularly arranged rows on the first annular surface of the annular disk.

4. The acoustic resonator assembly of claim 3 , wherein:
the first plurality of openings are formed from a first plurality of cells at least partially extending from the first annular surface of the first annular acoustic liner toward the second annular surface of the first annular acoustic liner, and a plurality of holes extending from the second annular surface of the first annular acoustic liner to at least one of the first plurality of cells; and
the second plurality of openings are formed from a second plurality of cells at least partially extending from the first annular surface of the second annular acoustic liner toward the second annular surface of the second annular acoustic liner, and a plurality of holes extending from the second annular surface of the second annular acoustic liner to at least one of the second plurality of cells.

5. The acoustic resonator assembly of claim 4 , wherein the annular disk is configured to rotate to at least partially misalign the third plurality of openings with at least one of the first plurality of openings and the second plurality of openings and decrease a number of the one or more frequencies of acoustic energy attenuated by the acoustic resonator assembly.

6. The acoustic resonator assembly of claim 3 , wherein:
the second plurality of openings are formed from a plurality of cells at least partially extending from the first annular surface of the second annular acoustic liner toward the second annular surface of the second annular acoustic liner, and a plurality of holes extending from the second annular surface of the second annular acoustic liner to at least one of the plurality of cells;
each opening of the first plurality of openings extends from the first annular surface of the first annular acoustic liner to the second annular surface of the first annular acoustic liner and has a diameter equal to a diameter of a cell of the plurality of cells; and
each hole of the plurality of holes of the third plurality of openings has a diameter smaller than the diameter of the cell of the plurality of cells.

7. The acoustic resonator assembly of claim 6 , wherein the annular disk is configured to rotate such that the annular disk prevents fluid communication between the first plurality of openings and the second plurality of openings, thereby decreasing a number of the one or more frequencies of acoustic energy attenuated by the acoustic resonator assembly.

8. A fluid pressurizing device, comprising:
a casing defining a cavity and having an impeller arranged for rotation within the cavity, the cavity being fluidly coupled to an inlet conduit and a diffuser channel; and
a first acoustic resonator assembly coupled to a diffuser wall defined in the diffuser channel and configured to reduce acoustic energy generated in the fluid pressurizing device, the first acoustic resonator assembly including:
a first annular acoustic liner defining a first plurality of openings extending between a first annular surface of the first annular acoustic liner and a second annular surface of the first annular acoustic liner opposite the first annular surface of the first annular acoustic liner,
a second annular acoustic liner defining a second plurality of openings extending between a first annular surface of the second annular acoustic liner and a second annular surface of the second annular acoustic liner opposite the first annular surface of the second annular acoustic liner, and
an annular disk defining a third plurality of openings extending between a first annular surface of the annular disk and a second annular surface of the annular disk axially opposing the first annular surface of the annular disk, the annular disk disposed between the first annular acoustic liner and the second annular acoustic liner, and the annular disk configured to rotate relative to the first annular acoustic liner and the second annular acoustic liner to attenuate one or more frequencies of the acoustic energy generated in the fluid pressurizing device, the annular disk being configured to rotate such that at least one opening of the first plurality of openings and at least one opening of the second plurality of openings are not overlapping.

9. The fluid pressurizing device of claim 8 , wherein each opening of the third plurality of openings is formed from a plurality of holes, each hole of the plurality of holes extending between the first annular surface of the annular disk and the second annular surface of the annular disk, and the third plurality of openings being the same size as each of the first plurality of openings and the second plurality of openings.

10. The fluid pressurizing device of claim 9 , wherein:
the first plurality of openings are formed in a plurality of annularly arranged rows on the first annular surface of the first annular acoustic liner;
the second plurality of openings are formed in a plurality of annularly arranged rows on the first annular surface of the second annular acoustic liner; and
the third plurality of openings are formed in a plurality of annularly arranged rows on the first annular surface of the annular disk.

11. The fluid pressurizing device of claim 10 , wherein:
the first plurality of openings are formed from a first plurality of cells at least partially extending from the first annular surface of the first annular acoustic liner toward the s

Assignees

• Dresser Rand Co
• Univ King Fahd Pet & Minerals
• Univ King Fahd Pet & Minerals

Inventors

• Mekid Samir N
• Hawwa Muhammad A
• Liu Zheji

Classifications

• F04D29/441 Primary

  especially adapted for elastic fluid pumps · CPC title

• G10K11/172

  using resonance effects · CPC title

• F05D2250/51

  Inlet · CPC title

• F04D29/665

  by means of resonance chambers or interference · CPC title

• F05D2250/52

  Outlet · CPC title