Bi-directional adjustable energy dissipating near zero...

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

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F16K 3/34 (2006.01) F16K 3/02 (2006.01) F16K 3/32 (2006.01)

Patent

CA 2600913

A bi-directional adjustable energy dissipating near zero leakage head loss valve comprising a valve body including and actuation shaft housing and a guide shaft mount disposed in opposition along the transverse valve actuation axis; a fixed plate having downstream orifices parallel to the flow axis; a mobile plate having upstream orifices parallel to the flow axis adapted to move along the transverse valve actuation axis: from a fully open position, wherein the upstream and downstream orifices are aligned to allow flow communication to a fully closed position, wherein the orifices are blocked by the mobile plate; a self adjusting taper ring located about the upstream inner perimeter of the valve body, the self adjusting taper ring having an inner surface engagingly biased against and parallel to the upstream side of the mobile plate, and having an outer surface engagingly biased against an upstream pipe gasket flange.

Vanne bidirectionnelle réglable dissipatrice d'énergie à perte de charge avec fuites négligeables comprenant un corps de vanne incluant un boîtier d'arbre d'actionnement et un arbre-guide placés en opposition le long de l'axe d'actionnement transversal de la vanne; une plaque fixe pourvue d'orifices en aval parallèles à l'axe d'écoulement adaptée pour se déplacer le long de l'axe d'actionnement transversal de la vanne : d'une position complètement ouverte, dans laquelle les orifices en amont et en aval sont alignés pour permettre la communication de l'écoulement jusqu'en position complètement fermée, dans laquelle les orifices sont bloqués par la plaque mobile; une bague conique auto-réglable située vers le périmètre intérieur en amont du corps de vanne, la bague conique auto-réglable ayant une surface intérieure orientée pour s'engager contre le côté en amont de la plaque mobile et parallèlement à cette dernière et possédant une surface extérieure orientée pour s'engager contre un rebord de joint d'une canalisation en amont.

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