Noise attenuating device for butterfly valves

Details Noise attenuating device for butterfly valves Noise attenuating device for butterfly valves

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 1/22 (2006.01) F16K 47/02 (2006.01) F16K 47/04 (2006.01)

Patent

CA 2312978

A noise attenuating device for reducing the noise generated by a gas flow passing through an open butterfly valve having a disc (18) pivotally mounted in a valve housing (12) for rotation about a transversal axis between an open and a closed position thereof. The noise attenuating device comprises a first series of elongated members (30) extending from the upstream side of the disc above the transversal axis and a second series of generally diametrically opposed elongated members (30) extending from the downstream side of the disc below the horizontal axis. Typically, the elongated members extend at 45 degree from the disc of the butterfly valve.

L'invention concerne un atténuateur de bruit permettant de réduire le bruit produit par un flux de gaz qui s'écoule à travers une vanne à papillon ouverte. Un disque (18) est monté pivotant dans un logement (12) de vanne, aux fins de rotation autour d'un axe transversal, entre des positions ouverte et fermée. L'atténuateur comprend une première série d'éléments allongés (30) qui s'étendent depuis le côté amont du disque au-dessus de l'axe transversal, et une seconde série d'éléments allongés (30) qui s'étendent depuis le côté aval du disque au-dessous de l'axe horizontal. D'une manière générale, lesdits éléments s'étendent à 45 DEG par rapport au disque de la vanne à papillon.

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