Safety quick-connect coupling for assembling two pipes

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

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Details

F16L 37/22 (2006.01) F16L 37/23 (2006.01) F16L 37/42 (2006.01)

Patent

CA 2622287

The invention concerns a coupling comprising a male element (3) and a female element (5) adapted to be axially fitted and interlocked one inside the other. A locking mechanism (37, 55) axially immobilizes the male element in a coupling position and a temporarily retaining mechanism (37, 55, 59) immobilizes the male element, after its release by the locking mechanism, in a position for flushing the pipe (C1) connected to the male element. The locking mechanism is controlled by a maneuvering sleeve (53) sliding around a body of the female element. When it retains the male element in flushing position, the temporarily retaining mechanism is subjected to a first load (E1) derived from the pressure (P) of the fluid flowing (F) from the male element outwards and to a second load (E2), opposite to the first, exerted by elastic return means (57) which, when the pressure (P) reaches a safety threshold, moves the mechanism into a configuration releasing the male element.

Ce raccord comprend un élément mâle (3) et un élément femelle (5) aptes à s'emmancher axialement et à se verrouiller l'un à l'intérieur de l'autre. Un mécanisme de verrouillage (37, 55) immobilise axialement l'élément mâle dans une position de raccordement et un mécanisme de retenue transitoire (37, 55, 59) immobilise l'élément mâle, après sa libération par le mécanisme de verrouillage, dans une position de purge de la canalisation (C1) reliée à l'élément mâle. Le mécanisme de verrouillage est commandé par un fourreau (53) de manAEuvre coulissant autour d'un corps de l'élément femelle. Lorsqu'il retient l'élément mâle en position de purge, le mécanisme de retenue transitoire est soumis à un premier effort (E1) dû à la pression (P) du fluide s'écoulant (F) de l'élément mâle vers l'extérieur et à un second effort (E2), antagoniste du premier effort, exercé par des moyens (57) de rappel élastique qui, lorsque la pression (P) atteint un seuil de sécurité, déplace le mécanisme vers une configuration de libération de l'élément mâle.

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