DETACHABLE JOINT OF PIPELINES Russian patent published in 2012 - IPC F16L21/00 

FIELD: construction.

SUBSTANCE: detachable joint comprises joined nipples with flanges, a sealing ring, arched collar elements for tightening joined nipples and their retention in working position, an adjustment element made in the form of an embracing ring installed tightly onto collar elements. The embracing ring is arranged on the collar elements concentrically. The inner diameter of the embracing ring is made smaller than the outer diameter of the collar elements. The ratio of its inner diameter to the outer diameter of the collar elements makes from 0.989 to 0.995. On the outer surface of the collar elements at their end side there is a guiding conical face. On the inner surface of the embracing ring at its end side there may also be a guide conical face arranged.

EFFECT: invention provides for higher tightness of the joint and increases its reliability, and makes it possible to significantly simplify the process of its manufacturing.

2 cl, 3 dwg