Permanent fitting for fluid-tight connections

Details Permanent fitting for fluid-tight connections Permanent fitting for fluid-tight connections

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 13/11 (2006.01) B29C 65/54 (2006.01) F16L 47/02 (2006.01)

Patent

CA 2240418

A pipe connector has a coupling (22) with a first cylindrical land (34), a second cylindrical land (36), and a third cylindrical land (38). There is a first annular recess (42) defined between the first cylindrical land (34) and the second cylindrical land (36), and a second annular recess (44) defined between the second cylindrical land (36) and the third cylindrical land (38). A gate channel (50) communicates between the two recesses (42, 44) through the second cylindrical land (36). Circumferential seals (46, 48) extend around the first and third cylindrical lands (34, 38). A cement injection port (52) communicates between the outside of the connector of the first recess (42), and a cement vent port (54) communicates between the outside of the connector and the second recess (44). In use, a pipe (24) is inserted into the coupling to rest upon the three lands (34, 36, 38), and cement is forced into the injection port (52). The cement flows circumferentially around the first annular recess (42), through the gate opening (50), circumferentially around the second annular recess (44), and out through the vent port (54). The seals (46, 48) prevent the cement from flowing out of the interior of the connector.

Raccord de tuyau comportant un accouplement (22) pourvu d'un premier (34), deuxième (36), et troisième (38) appui cylindrique. Un premier évidement annulaire (42) est formé entre le premier (34) et le deuxième (36) appui cylindrique, et un second évidement annulaire (44) entre le deuxième (36) et le troisième (38) appui cylindrique. Un canal (50) pourvu d'une ouverture communique entre les deux évidements (42, 44) par le deuxième appui cylindrique (36). Des joints périphériques (46, 48) entourent les premier et troisième appuis cylindriques (34, 38). Un orifice d'injection de ciment (52) communique entre l'extérieur du raccord du premier évidement (42), et un orifice d'évacuation du ciment (54) communique entre l'extérieur du raccord et le second évidement (44). En utilisation, un tuyau (24) est inséré dans l'accouplement afin qu'il repose sur les trois appuis (34, 36, 38), et le ciment est poussé dans l'orifice d'injection (52). Le ciment s'écoule autour du premier évidement annulaire (42), passant par l'ouverture du canal (50), et autour du second évidement (44), puis sort par l'orifice d'évacuation (54). Les joints (46, 48) empêchent le ciment de sortir de l'intérieur du raccord.

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