Fluid flow regulator

Details Fluid flow regulator Fluid flow regulator

G - Physics

05

D

G05D 7/01 (2006.01)

Patent

CA 2762384

A fluid flow regulator (14) includes a valve assembly defining a fluid passage (34). The fluid passage includes a first port (30), a second port (32), a sensing orifice (36) disposed between the first and second ports, a first orifice (38) disposed between the first port and the sensing orifice and a second orifice (40) disposed between the sensing orifice and the second port. A first flow area of the first flow orifice varies in response to differential pressure across the sensing orifice as fluid flows through the fluid passage in a first direction from the first port to the second port. The first flow area is fixed as fluid flows through the fluid passage in an opposite second direction. A second flow area of the second orifice is fixed as fluid flows through the fluid passage in the first direction and varies as fluid flows through the fluid passage in the second direction.

L'invention concerne un régulateur de débit (14) comprenant un ensemble soupape définissant un passage fluidique (34). Le passage fluidique comprend un premier port (30), un second port (32), un orifice de détection (36) disposé entre les premier et second ports, un premier orifice (38) disposé entre le premier port et l'orifice de détection et un second orifice (40) disposé entre l'orifice de détection et le second port. Une première zone d'écoulement du premier orifice d'écoulement varie en fonction d'une pression différentielle à travers l'orifice de détection lorsque le fluide s'écoule dans le passage fluidique dans un premier sens depuis le premier port vers le second port. La première zone d'écoulement est fixe lorsque le fluide s'écoule dans le passage fluidique dans un second sens opposé. Une seconde zone d'écoulement du second orifice est fixe lorsque le fluide s'écoule dans le passage fluidique dans le premier sens et varie lorsque le fluide s'écoule dans le passage fluidique dans le second sens.

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