Balanced port housing with integrated flow conditioning

F - Mech Eng,Light,Heat,Weapons – 16 – K

Patent

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Details

F16K 31/165 (2006.01)

Patent

CA 2720852

A gas regulator includes an actuator, a valve, and a balanced port housing disposed within the valve for flow conditioning to convert turbulent flow within the valve to laminar flow when the fluid reaches the sensing point of a Pitot tube disposed within the outlet of the valve. The balancing port housing includes an opening through a sidewall and disposed between a valve port of the valve and the outlet. The opening may include a partial obstruction, such as baffles or a mesh screen over which the fluid flows to convert the turbulent flow to laminar flow. The regulator may further include balanced trim having a balancing diaphragm in fluid communication with the upstream pressure to apply a force to a valve disc of the valve in the opposite direction of the force applied to the valve disc by the upstream pressure so that the upstream pressure does not affect the regulator's control of the downstream pressure.

La présente invention concerne régulateur de gaz comprenant un actionneur, une soupape, et un logement d'orifice équilibré disposé à l'intérieur de la soupape de conditionnement de flux de façon à convertir à l'intérieur de la soupape en flux laminaire le flux turbulent quand le fluide atteint le point de détection du tube de Pitot placé à l'intérieur de l'orifice de sortie de la soupape. Le logement à orifice d'équilibrage comporte une ouverture traversant une paroi latérale et située entre un orifice de la soupape et l'orifice. L'ouverture peut comporter une obstruction partielle, telle que des déflecteurs ou un tamis maillé, au-dessus desquels s'écoule le fluide, de façon à convertir en flux laminaire le flux turbulent. Le régulateur peut en outre comporter des équipements de robinetterie équilibrés pourvus d'une membrane d'équilibrage en communication fluidique avec la pression amont pour appliquer au disque de soupape de la soupape une force s'opposant à celle qu'applique au disque de soupape la pression amont de façon que la pression amont n'affecte pas la régulation de la pression aval par le régulateur.

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