Butterfly valve for controlling a gas pressure

Details Butterfly valve for controlling a gas pressure Butterfly valve for controlling a gas pressure

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 1/22 (2006.01)

Patent

CA 2493746

A butterfly valve for controlling a gas pressure, in particular inside a cabin of an aircraft, comprises a valve housing (10) having a longitudinal axis (11), a shaft (20) having a rotation axis (21), and a closure member (30) connected to the shaft (20). The closure member (30) is pivotally mounted in the valve housing (10) for rotation about the rotation axis (21) between an open position and a closed position. Moreover, the closure member (30) consists of a first disk (40) and a complementary second disk (50) which abut against each other. The first disk (40) and the second disk (50) are symmetrically arranged with regard to a symmetric axis (31) extending at a predetermined angle of inclination to the rotation axis (21). Such a butterfly valve ensures a restricted cross-sectional area of the valve housing (10), even if breaking of the closure member (30) occurs.

L'invention concerne une vanne papillon permettant de commander la pression d'un gaz, notamment à l'intérieur d'une cabine d'avion. Cette vanne papillon comprend un logement de valve (10) ayant un axe longitudinal (11), une tige (20) ayant un axe de rotation (21) et un élément de fermeture (30) connecté à la tige (20). L'élément de fermeture (30) est monté pivotant dans le logement de valve (10) pour tourner autour de l'axe de rotation (21) entre une position ouverte et une position fermée. En outre, l'élément de fermeture (30) est constitué d'un premier disque (40) et d'un deuxième disque (50) complémentaire qui s'appuient l'un sur l'autre. Le premier disque (40) et le deuxième disque (50) sont montés symétriquement par rapport à un axe de symétrie (31) qui forme un angle d'inclinaison prédéterminé par rapport à l'axe de rotation (21). Une telle vanne papillon garantit une section transversale limitée du logement de valve (10), même en présence d'une rupture de l'élément de fermeture (30).

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