DEVICE FOR PROTECTING JOINT OF COATED PIPELINES Russian patent published in 2018 - IPC F16L9/14 

FIELD: construction.

SUBSTANCE: invention relates to the field of construction and repair of pipelines, namely to the joints of pipelines with a protective coating, laid on the bottom of the reservoir or wetland. Device for protecting the joint of the coated pipelines includes the ends of the conductive tubes with a protective coating, connected by a welded joint and fixed to them, paired semirings, connected together by fasteners through the eyes from one end and the hinge from the opposite. Paired semirings are divided into modules of paired semirings, in which the half rings are connected together by fasteners through the eyes from one end and with a removable hinge and fasteners located in the lugs, which have the form of a groove from the opposite end. Pair of semi-rings module placed above the weld seam has a width exceeding the weld zone and takes into account the tolerances for the linear dimensions of the protective coating of the conducting pipes.

EFFECT: increased service life of pipelines with ballast coating due to reduced loads on the butt joint and its hardening.

7 cl, 11 dwg