F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
285/63
F16L 15/04 (2006.01) F16L 15/00 (2006.01) E21B 17/042 (2006.01)
Patent
CA 1269684
ABSTRACT OF THE DISCLOSURE A basic structure of a screw joint coupling for oil pipes according to the invention is that a main sealing portion is constructed with a sealing portion which is formed axially in convex at an end of a male screw, and with a sealing portion which is formed in taper at an inner side of a female screw, and that the male screw and the female screw are butted at an end point of the former and an end part of a stopper formed at an inner side of the latter. The main sealing portion has a shrinking margin .DELTA.D of the seal part, which is regulated in size in a relation between a shrinking margin .DELTA.d of the screw and a pressure P of the sealing part. Further, respective sizes are regulated on a load flank angle, the radius of curvature in convex of the sealing portion of the male screw, and the taper- ing angle of the sealing portion of the female screw.
462495
Handa Masao
Hori Mitsuaki
Ichihara Takuzo
Sato Toshio
Tokuya Tomohiko
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Tenaris Connections Ag
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