F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
F16K 3/34 (2006.01) F16K 47/04 (2006.01)
Patent
CA 2119633
The flow trim has inner and outer, spaced apart, tubular cylindrical, coextensive, ported walls which project across the inlet of the choke. A tubular throttling collar may be advanced longitudinally through the annular space between the ported walls, to vary the flow area of the ports. The arrangement enables staging of the pressure drop in increments through the ports of the choke. This reduces cavitation.
L'invention concerne une garniture comportant une paroi intérieure et une paroi extérieure, cylindriques et co-extensibles, dotées d'orifices et écartées l'une de l'autre, faisant saillie à l'admission de l'étrangleur. Un collier d'étranglement tubulaire peut être avancé longitudinalement dans l'espace annulaire entre les parois à orifices de manière à faire varier la section d'écoulement aux orifices. Cette configuration permet d'étager la chute de pression par incréments dans les orifices de l'étrangleur et de réduire ainsi la cavitation.
Cove Richard
Johnson Ernest Peter
Master Flo Valve Inc.
LandOfFree
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