Stacked disk noise abatement device and control valve comprising same
First Claim
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1. A fluid pressure reduction device comprising:
- a plurality of stacked disks, the plurality of disks including;
a first disk having a first hollow center portion, a first annular perimeter, a first fluid inlet portion disposed radially inward of a first stage restriction, a first stage recovery entry disposed radially outward of the first stage restriction, and a third stage recovery plenum disposed radially outward and separated from the first stage recovery entry; and
a second disk having a second hollow center portion, a second annular perimeter, and a restriction and recovery plenum disposed between and separated from the second hollow center portion and the second annular perimeter, the restriction and recovery plenum including a first stage recovery area, a second stage restriction fluidly connected to the first stage recovery area, and a second stage recovery plenum fluidly connected to the second stage restriction;
wherein a fluid flowpath is formed between the first fluid inlet portion and the third stage recovery plenum, the fluid flowpath passing radially through the first stage restriction, axially into the first stage recovery area, radially through the second stage restriction and the second stage recovery plenum, before passing axially into the third stage recovery plenum, the second stage restriction directing the fluid flowpath radially inward, towards the second hollow center portion, andwherein each restriction comprises a reduction in cross-sectional flow area along the fluid flowpath.
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Abstract
A fluid pressure reduction device includes a radial and axial fluid flow path in stacked disks. The stacked disks form a fluid flow path including at least two pressure reduction stages, a first pressure reduction stage being oriented so that the fluid flowpath is directed radially outward and a second pressure reduction stage being oriented so that the fluid flowpath is directed radially inward.
19 Citations
20 Claims
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1. A fluid pressure reduction device comprising:
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a plurality of stacked disks, the plurality of disks including; a first disk having a first hollow center portion, a first annular perimeter, a first fluid inlet portion disposed radially inward of a first stage restriction, a first stage recovery entry disposed radially outward of the first stage restriction, and a third stage recovery plenum disposed radially outward and separated from the first stage recovery entry; and a second disk having a second hollow center portion, a second annular perimeter, and a restriction and recovery plenum disposed between and separated from the second hollow center portion and the second annular perimeter, the restriction and recovery plenum including a first stage recovery area, a second stage restriction fluidly connected to the first stage recovery area, and a second stage recovery plenum fluidly connected to the second stage restriction; wherein a fluid flowpath is formed between the first fluid inlet portion and the third stage recovery plenum, the fluid flowpath passing radially through the first stage restriction, axially into the first stage recovery area, radially through the second stage restriction and the second stage recovery plenum, before passing axially into the third stage recovery plenum, the second stage restriction directing the fluid flowpath radially inward, towards the second hollow center portion, and wherein each restriction comprises a reduction in cross-sectional flow area along the fluid flowpath. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A fluid control valve comprising:
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a valve body having a fluid inlet and a fluid outlet connected by a connecting passageway; and a plurality of stacked disks disposed in the connecting passageway, the plurality of stacked disks including; a first disk having a first hollow center portion, a first annular perimeter, a first fluid inlet portion disposed radially inward of a first stage restriction, a first stage recovery entry disposed radially outward of the first stage restriction, and a third stage recovery plenum disposed radially outward and separated from the first stage recovery entry; and a second disk having a second hollow center portion, a second annular perimeter, and a restriction and recovery plenum disposed between and separated from the second hollow center portion and the second annular perimeter, the restriction and recovery plenum including a first stage recovery area, a second stage restriction fluidly connected to the first stage recovery area, and a second stage recovery plenum fluidly connected to the second stage restriction; wherein a fluid flowpath is formed between the first fluid inlet portion and the third stage recovery plenum, the fluid flowpath passing radially through the first stage restriction, axially into the first stage recovery area, radially through the second stage restriction and the second stage recovery plenum, before passing axially into the third stage recovery plenum, the second stage restriction directing the fluid flowpath radially inward, towards the second hollow center portion, and wherein each restriction comprises a reduction in cross-sectional flow area along the fluid flowpath. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification