LINEAR ELEMENT OF DEMOUNTABLE PIPELINE Russian patent published in 2016 - IPC F16L9/14 

FIELD: transportation.

SUBSTANCE: invention relates to pipeline transport, particularly, to demountable pipelines with a female joint. Linear element of a demountable pipeline consists of a pipe, one end of which is made in the shape of a cone, and the other end - in the shape of a female end. On the external surface of the female end there is a circular groove. On inner surface of the female end there is a lead-in chamfer and two successively arranged circular grooves. In one groove there is a installed a microporous rubber lining with a steel lock ring. Lock ring cross-section is rectangular with an arched section on the side of the lead-in chamfer. Circular groove on the side of the lead-in chamfer has a rectangular-stepped shape. Vertical and horizontal surfaces of the step are in contact with the steel lock ring. In the second circular groove there is installed a shaped rubber sealing ring. On the external surface of the cone there is a lead-in section having a cylindrical and conical parts. After the conical part of the lead-in section there is a cylindrical surface, ending with a rectangular recess, the surfaces of which are in contact with the surfaces of the lock ring. Length of the cylindrical part of the lead-in section is defined by relationship.

EFFECT: invention allows to enhance reliability of pipeline operation.

1 cl, 3 dwg