Flow control valve

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

Patent

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F16K 17/30 (2006.01)

Patent

CA 2557179

A two-stage fluid pressure control valve has five components. An inlet socket with separate fluid flow orifices sealably engages an outlet socket which also has separate fluid flow orifices. A pressure check piston having a fluid flow orifice along its longitudinal central axis slidably engages the inlet socket and the outlet socket. A spring located along the central axis of the outlet socket biases the pressure check piston in an open position, allowing fluid to flow through all orifices. Fluid flow through the control valve may impact the pressure check piston to overcome the spring force, moving the pressure check piston to a closed position, whereby fluid flows only through the orifice in the pressure check piston.

Cette invention concerne une soupape de régulation de pression de fluide à deux étages comprenant cinq éléments. Un raccord d'admission comportant des orifices d'écoulement de fluide séparés est en contact étanche avec un raccord d'évacuation qui comporte également des orifices d'écoulement de fluide séparés. Un piston de régulation de pression comportant un orifice d'écoulement de fluide le long de son axe central longitudinal est en contact coulissant avec le raccord d'admission et le raccord d'évacuation. Un ressort situé le long de l'axe central du raccord d'évacuation pousse le piston de régulation de pression en position ouverte, ce qui permet au fluide de s'écouler par tous les orifices. L'écoulement du fluide à travers la soupape de régulation peut inciter le piston de régulation de pression à surpasser la force du ressort, lequel piston de régulation de pression passe alors en position fermée, ce qui pousse le fluide à s'écouler uniquement par l'orifice du piston de régulation de pression.

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