| CPC F16L 23/0286 (2013.01) [F16L 23/024 (2013.01); F16L 23/032 (2013.01); F16L 47/14 (2013.01); F16L 2201/10 (2013.01)] | 6 Claims |
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1. A pipe connection device comprising:
an adapter comprising a hollow pipe and a ring-shaped protruding end extending in a diameter direction of the hollow pipe from one end of the hollow pipe in a longitudinal direction;
a ring flange formed in a ring shape and mounted so as to surround an outer circumferential surface of the protruding end and to be axially rotatable about a central axis of the hollow pipe in the longitudinal direction but not to be movable over the hollow pipe in a fully assembled state; and
a fastening unit configured to join the ring flange and a second ring flange of a second adapter having a second hollow pipe to each other in a stacked structure so that one end of the ring flange or the second ring flange of the hollow pipes in the longitudinal direction and one end of the other of the ring flange or the second ring flange of the hollow pipes in the longitudinal direction are forcibly secured to each other,
wherein the protruding end comprises a slide groove formed in an outer circumferential surface thereof so as to extend in a circumferential direction of the protruding end,
wherein the ring flange comprises a slide protrusion formed on an inner circumferential surface thereof so as to be inserted into the slide groove and to be slidable in a longitudinal direction of the slide groove, and
wherein the pipe connection device further comprises:
a groove reinforcing plate having higher strength and wear resistance than the protruding end and attached to an inner wall of the slide groove close to the one end of the hollow pipe among inner walls of the slide groove; and
a protrusion reinforcing plate having higher strength and wear resistance than the slide protrusion and attached to an outer surface of the slide protrusion corresponding to the groove reinforcing plate among outer surfaces of the slide protrusion.
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