Fluid tight flare nut securing assembly

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

Patent

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Details

F16L 55/00 (2006.01) F16L 19/028 (2006.01) F16L 19/04 (2006.01)

Patent

CA 2291064

A fluid tight flare nut union is described. Flare nut unions are convenient to install in systems, such as refrigeration systems, and are generally reliably fluid tight. Leaks can occur over time, however, due to environmental stress conditions. Deformable ferrules (36), in combination with compression nut (40) assemblies, either singly, or redundantly, or in counter rotation redundant assembly, secure the flare nut (32) to the fluid transfer tubing (30) in a locking relationship which prevents the loosening of the flare nut-flare connection with subsequent fluid leakage due to these environmental stresses. Enclosing the complete assembly in water proof insulating material (44), further insures virtually leak proof operation of the improved flare nut union.

On décrit un ensemble fixation à écrou évasé étanche aux fluides, ce type de fixation étant pratique à installer dans des systèmes tels que des systèmes de réfrigération, et généralement fiable sur le plan de l'étanchéité. Toutefois, avec le temps, des fuites peuvent se produire, sous l'effet de contraintes environnementales. Des colliers déformables (36), combinés à des ensembles écrous à compression (40), en une combinaison simple ou multiple, ou en une combinaison multiple s'ajustant par rotation en sens inverse, assujettissent l'écrou évasé (32) au tube (30) de transfert de fluide, dans une relation de blocage empêchant le desserrage de l'écrou évasé/raccord évasé, phénomène qui serait suivi d'une fuite de fluide sous l'effet de contraintes environnementales. En enfermant l'ensemble complet dans un matériau isolant et étanche (44), on assure un fonctionnement, virtuellement à l'épreuve des fuites, de l'ensemble écrou évasé perfectionné.

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