Manifold for use with dual pressure sensor units

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

Patent

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Details

F16K 27/00 (2006.01) F17D 3/00 (2006.01) F17D 3/18 (2006.01) G01L 19/00 (2006.01) F15D 1/14 (2006.01)

Patent

CA 2347035

A valve manifold (IM) for interfacing between a flowline control manifold and first and second pressure sensor units, the manifold having a monolithic body (22) defining a mating surface (28) for mating with the process control manifold and an instrument face for mating with the first and second pressure sensor units, the body having a peripheral wall (54) with a first portion (60) thereof being on the opposite side of the instrument face with respect to the mating face, the first portion of the peripheral wall forming an equalizing valve pocket surface for high and low pressure equalizing valve pockets (76, 82) carrying high and low pressure equalizing valves (77, 79), respectively. High and low pressure fluid passageways (72, 78) extend from the mating surface to the equalizing valve pockets. The high pressure fluid passageway communicates with a high pressure plenum (48) in the instrument face while the low pressure fluid passageway (78) communicates with a low pressure plenum (46) formed in the instrument face. An equalizing fluid passageway (102, 104) interconnects the high pressure and low pressure equalizing valve pockets. A gauge pressure passageway (88) is connected to the high pressure fluid passageway and is in open communication with a second high pressure plenum (50) formed in the instrument face. A block valve (97) selectively controls flow through the gauge pressure passageway.

L'invention concerne un collecteur (IM) à vannes d'interfaçage entre un collecteur de commande de tuyauterie et un premier et second capteurs de pression. Le collecteur est constitué d'un corps (22) monobloc définissant une surface de contact (28) avec le collecteur de commande de processus et la face de contact d'un instrument avec les premier et second capteurs de pression. Ledit corps a une paroi périphérique (54) dont une première partie (60) se trouve sur le côté opposé de la face de l'instrument par rapport à la face de contact. La première partie de la paroi périphérique forme une surface de poche à vanne de compensation conçue pour des poches (76, 82) portant des vannes (77, 79) de compensation haute et basse pressions respectivement. Les passages (72, 78) de fluide haute et basse pressions vont de la surface de contact aux poches à valves de compensation. Le passage de fluide haute pression communique avec la chambre de distribution (48) haute pression formée dans la face de l'instrument. Un passage de fluide de compensation (102, 104) relie les poches à valves de compensation haute et basse pressions. Un passage de pression au manomètre (88) est relié au passage de fluide haute pression et communique librement avec une seconde chambre de distribution (50) haute pression formée dans la face de l'instrument. Une vanne de coupure (97) commande de manière sélective le débit à travers le passage de pression au manomètre.

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