Choked Flow Valve With Clamped Seat Ring
First Claim
Patent Images
1. A fluid valve comprising:
- a valve body having a fluid inlet and a fluid outlet connected by a fluid passageway;
a trim assembly disposed within the fluid passageway; and
a fluid control member movably disposed within the fluid passageway, the fluid control member cooperating with the trim assembly to control fluid flow through the fluid passageway;
wherein the trim assembly includes a clamped seat ring, the clamped seat ring including a convergent-divergent nozzle.
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Abstract
A fluid valve includes a valve body having a fluid inlet and a fluid outlet connected by a fluid passageway. A valve seat is disposed within the fluid passageway. A fluid control member is movably disposed within the fluid passageway, the fluid control member cooperating with a trim assembly to control fluid flow through the fluid passageway. The valve seat is clamped into the valve body and the fluid valve operates under choked flow at a pressure drop of 10% or less of the inlet fluid pressure.
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Citations
20 Claims
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1. A fluid valve comprising:
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a valve body having a fluid inlet and a fluid outlet connected by a fluid passageway; a trim assembly disposed within the fluid passageway; and a fluid control member movably disposed within the fluid passageway, the fluid control member cooperating with the trim assembly to control fluid flow through the fluid passageway; wherein the trim assembly includes a clamped seat ring, the clamped seat ring including a convergent-divergent nozzle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A choked flow clamped seat ring assembly for a choked flow fluid control valve, the assembly comprising:
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a seat ring retainer including an upper body portion, a skirt that extends away from the upper body portion, the skirt being adapted to guide movement of a fluid control member, a securement ring spaced apart from the skirt, and a plurality of legs connecting the securement ring to the skirt; and a seat ring, the seat ring including a converging nozzle and a diverging nozzle that meet at vena contracta; wherein the securement ring is adapted to clamp a portion of the seat ring against a valve body. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A retainer for a choked flow clamped seat ring assembly, the retainer comprising:
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an upper body portion; a skirt that extends away from the upper body portion, the skirt being adapted to guide movement of a fluid control member; a securement ring spaced apart from the skirt; and a plurality of legs connecting the securement ring to the skirt.
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Specification