Fluid pressure reduction device

• US 7,013,918 B2
• Filed: 07/25/2005
• Issued: 03/21/2006
• Est. Priority Date: 08/16/2001
• Status: Expired due to Term

• Current Assignee: Fisher Controls International LLC (Emerson Electric Company)
• Original Assignee: Fisher Controls International LLC (Emerson Electric Company)
• Inventors: McCarty, Michael Wildie, Anderson, Michael M., Long, Ted Alan
• Primary Examiner(s): Fox, John
• Application Number:
  US11/188,299
• Publication Number:
  US 20050252559A1
• Time in Patent Office: 239 Days
• Field of Search: 137/625.3, 137/625.33, 298/901.24, 298/901.28, 298/901.32
• US Class Current: 137/625.33
• CPC Class Codes: F16K 47/04 for decreasing pressure or noise level, the throttle being incorporated in the closure member
• CPC Class Codes: F16K 47/08 for decreasing pressure or noise level and having a throttling member separate from the closure member , e.g. screens, slots, labyrinths
• CPC Class Codes: Y10T 137/86734 With metering feature
• CPC Class Codes: Y10T 137/86759 Reciprocating
• CPC Class Codes: Y10T 29/49419 including machining or drilling

Abstract

A fluid pressure reduction device comprises a plurality of stacked disks having a perimeter and a hollow center aligned along a longitudinal axis. Each disk has at least one flow path extending between the hollow center and the perimeter, the flow path including an inlet section, an outlet section, and an intermediate section extending between the inlet and outlet sections. Each flow path intermediate section includes a pressure reducing structure and a recovery zone positioned immediately downstream of the pressure reducing structure.

Claims

1. A method of assembling a fluid pressure reduction device, comprising:

forming a plurality of disks having at least one flow path extending between a hollow center and a perimeter of the disk, each flow path including an inlet section, an outlet section, and an intermediate section extending between the inlet and outlet sections, the flow path dividing the disk into at least first and second blank portions, each disk further including a first bridge portion extending between the first and second blank portions;

stacking the disks along an axis;

securing the stacked disks together to form a stacked disk assembly;

removing the first bridge portion of each disk in the stacked disk assembly.

2. The method of claim 1, in which the first bridge portion comprises an inner ring portion extending about the interior portion of the disk.

3. The method of claim 1, in which the first bridge portion comprises an outer ring portion extending about the perimeter of the disk.

4. The method of claim 1, in which the first bridge portion comprises a tab extending between the first and second blank portions.

5. The method of claim 1, in which the disk further includes a second bridge portion, and in which the method further comprises the step of removing the second bridge portion of each disk in the stacked disk assembly.

6. The method of claim 5, in which the first bridge portion comprises an inner ring portion extending about the interior portion of the disk, and the second disk portion comprises an outer ring portion extending about the perimeter of the disk.

7. The method of claim 5, in which the first and second bridge portions comprise first and second tabs extending between adjacent blank portions.