Fluid pressure reduction device
First Claim
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1. A fluid pressure reduction device comprising:
- at least two stacked disks each having fluid passageways for communicating fluid from an inlet to an outlet;
a high recovery first stage in said fluid passageways; and
a low recovery second stage in series with said high recovery first stage to obtain the desired fluid pressure reduction with low noise generation.
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Abstract
A fluid pressure reduction device with low noise generation. A stack of annular disks with fluid passageways formed of inlet slots, outlet slots, and interconnecting plenums. Selectively stacking and orienting the annular disks along with an asymmetric slot pattern creates the desired fluid passageways without creating an uninterrupted axial fluid flow path. High recovery inlet stages are in fluid communicating series with low recovery outlet stages and the combination provides a high performance fluid pressure reduction device with low noise generation.
113 Citations
17 Claims
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1. A fluid pressure reduction device comprising:
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at least two stacked disks each having fluid passageways for communicating fluid from an inlet to an outlet; a high recovery first stage in said fluid passageways; and a low recovery second stage in series with said high recovery first stage to obtain the desired fluid pressure reduction with low noise generation. - View Dependent Claims (2)
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3. A fluid pressure reduction device comprising:
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a plurality of stacked annular disks having a perimeter and hollow centers aligned along a longitudinal axis; each disk including multiple high recovery first stages located at said hollow center for receiving fluid inlet and multiple low recovery second stages in fluid communicating series with said high recovery first stages and located at said perimeter; said high recovery first stage and series coupled low recovery second stages providing the desired fluid pressure reduction with low noise generation. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A fluid control valve comprising:
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a valve body including a fluid inlet, a fluid outlet, and a connecting valve body passageway; a valve seat mounted in said valve body passageway; an operating valve member adapted to cooperate with said valve seat to control the flow of fluid through said valve body passageway; a valve cage mounted above said valve seat and in said valve body passageway for reducing the fluid pressure, said valve cage including; a plurality of stacked annular disks having a perimeter and hollow centers aligned along a longitudinal axis; each disk including multiple high recovery first stages located at said hollow center for receiving fluid inlet and multiple low recovery second stages in fluid communicating series with said high recovery first stages and located at said perimeter; said high recovery first stage and series coupled low recovery second stages providing the desired fluid pressure reduction with low noise generation. - View Dependent Claims (15, 16)
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17. A fluid pressure reduction device comprising:
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a plurality of stacked disks having a perimeter and hollow centers aligned along a longitudinal axis; said stacked disks including alternating first and second disks; said first disk having (a) multiple high recovery first stages located at said hollow center for receiving fluid inlet, and (b) multiple low recovery second stages in fluid communicating series with said high recovery first stages and located at said perimeter; said second disk having (c) at least one plenum extending through the disk; and said disks selectively positioned in said stack to enable fluid flow from said high recovery first stages in one disk to said plenum in adjacent disks and to said low recovery second stages in at least said one disk, wherein the fluid flow path is split into two initial axial directions, then into said plenum with multiple radial flow directions, and then distributed through multiple low recovery second stages in at least said one disk.
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Specification