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Title:
ハーシェル-クインクチューブを使用する騒音低減モジュール
Document Type and Number:
Japanese Patent JP2008534883
Kind Code:
A
Abstract:
A noise-attenuating module of a valve trim, including: a first divider plate; a second divider plate; and a plurality of flow segment plates disposed adjacent to and in contact with one another. At least one Herschel-Quincke tube flow path is formed by interconnected openings in the flow segment plates. A noise-attenuating cartridge to be placed transverse to the path of flowing fluid, the cartridge having: a plurality of flow segment plates disposed adjacent to and in contact with one another. At least one Herschel-Quincke tube is formed by interconnected openings in the flow segment plates. A noise-attenuating cartridge to be placed transverse to the path of flowing fluid, the cartridge including a segmented disk disposed with a first surface in an upstream side of the path of the flowing fluid and a second surface disposed in a downstream side of the path of flowing fluid. The segmented disk having at least two lateral mating faces with at least one Herschel-Quincke tube milled into at least one of the lateral faces, said Herschel-Quincke tube open at an inlet end to the first surface of the segmented disk and open at a discharge end at the second surface of the segmented disk. In the implementations disclosed herein, wherein at least a portion of fluid flowing in the fluid path flows into the first end of the Herschel-Quincke tube then divides into two flowstreams in the tube and then exits the Herschel-Quincke tube through an opening in the second end of the module, thereby reducing flow noise by diverting part of an acoustic wave created by the flowing fluid into the Herschel-Quincke tube, such that the acoustic wave of the Herschel-Quincke tube exits the tube out of phase with the main flow path acoustic wave, thus attenuating the main flow path noise.

Inventors:
Vitna, Christafa
Application Number:
JP2008504229A
Publication Date:
August 28, 2008
Filing Date:
March 27, 2006
Export Citation:
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Assignee:
Dresser, ink
International Classes:
F16K47/02; F16K3/24; F16L55/02
Domestic Patent References:
JPH08320003A1996-12-03
JPS5899600U1983-07-06
JPH10246384A1998-09-14
JPH04125391A1992-04-24
Foreign References:
US5819803A1998-10-13
Attorney, Agent or Firm:
Yuzo Sanada
Ohara Shizuo