Pipe coupling

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

Patent

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Details

F16L 37/30 (2006.01) F16L 55/07 (2006.01)

Patent

CA 2513335

A pipe coupling is provided that facilitates an operation of opening or closing a ball valve and suppresses damage to a cylindrical seal member by the ball valve when rotated, thereby enabling an improvement in durability. A socket fluid passage (4) in a socket (1) is opened or closed with a ball valve (5). A cylindrical seal member (11) is disposed in a primary fluid passage portion (4a) of the socket fluid passage (4) in such a manner as to be in pressure contact with the ball valve (5) to seal between the ball valve (5) and the inner wall of the socket fluid passage (4). The ball valve (5) is rotatable to open when the socket (1) and a plug (2) are locked to each other by a lock mechanism (16). The ball valve (5) is provided with a sub-valve bore (33) that allows fluid in the primary fluid passage portion (4a) to be delivered to a secondary fluid passage portion (4b) of the socket fluid passage (4) through the ball valve (5) before a valve bore (7) of the ball valve (5) opens into the socket fluid passage (4) when the ball valve (5) is rotated.

L'invention concerne une ferrure qui facilite l'ouverture/la fermeture d'un clapet à bille et qui accroît la durabilité en supprimant la rupture d'un corps de raccord tubulaire lors de la rotation ; un passage de fluide à douille (4) est formé dans une douille (1) de façon à pouvoir être ouvert et fermé par le clapet à bille (5) ; le corps de raccord tubulaire (11) pour joindre hermétiquement le clapet à bille (5) et la paroi interne du passage de fluide à douille (4) est posé comprimé contre ledit clapet à bille (5) dans le passage de fluide primaire (4a) dudit passage de fluide à douille (4) ; le clapet à bille (5) peut tourner ouvert lorsque la douille (1) et une prise (2) sont bloquées par un mécanisme de blocage (16), et le clapet à bille (5) comporte un sous trou de clapet (33) pour alimenter en fluide le passage de fluide primaire (4a) vers le passage de fluide secondaire (4b) du passage de fluide à douille (4) par le clapet à bille (5) avant l'ouverture du trou de clapet (7) du clapet à bille (5) dans le passage de fluide à douille (4) par rotation dudit clapet à bille (5).

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