Branching unit for boring without stopping passage of fluid

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

Patent

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Details

F16L 41/06 (2006.01) F16L 55/00 (2006.01)

Patent

CA 2684935

A branch device for noninterruptive flow boring suitable for connecting branch piping with an existing pipe (1) by partially boring the pipe wall (12) of the existing pipe (1) using a boring machine (3) equipped with a hole saw (4) and forming an opening (11) in the pipe wall (12) comprises a plurality of cases (21, 22) split in the circumferential direction R of the existing pipe (1), an enclosed case (20) formed integrally with the first split case (21) out of the plurality of split cases (21, 22) and having a pipe portion (27) projecting in the radial direction C of the existing pipe (1) and branching, a valve element (5) having an arcuate or circular cross-section and opening/closing the opening (28) of the branch pipe portion (27) by rotating along the circumferential direction R of the existing pipe (1) between the inner circumferential surface (29) of the split case (20) and the outer circumferential surface (13) of the existing pipe (1), and a mechanism (50) for rotating the valve element (5).

La présente invention concerne un dispositif de dérivation pour alésage d'écoulement sans interruption destiné à brancher une canalisation de dérivation à un tuyau existant (1) en alésant en partie la paroi du tuyau (12) du tuyau existant (1) à l'aide d'une aléseuse (3) équipée d'une scie-cloche (4) et en formant une ouverture (11) dans la paroi du tuyau (12), comprenant une pluralité de boîtiers (21, 22) divisés dans le sens de la circonférence R du tuyau existant (1), un boîtier protégé (20) formé intégralement avec le premier boîtier divisé (21) de la pluralité de boîtiers divisés (21, 22) et ayant une partie de tuyau (27) dépassant dans la direction radiale C du tuyau existant (1) et dérivant un élément de soupape (5) ayant une coupe transversale en arc ou circulaire et en ouvrant/fermant l'ouverture (28) de la partie de la conduite de dérivation (27) en faisant pivoter dans le sens de la circonférence R du tuyau existant (1) entre la surface de la circonférence interne (29) du boîtier divisé (20) et la surface de la circonférence externe (13) du tuyau existant (1), et un mécanisme (50) pour faire pivoter l'élément de soupape (5).

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