ISOLATED PIPE JOINT Russian patent published in 2009 - IPC F16L25/02 

FIELD: mechanics.

SUBSTANCE: proposed isolated pipe joint comprises pipe sections screwed together, their ends faces being provided with ledges separated by electrically insulating cylindrical elements and elastic seal of the joint. The pipe sections are provided with L-shape lengthwise section nozzles, inside and outside of which two electrically insulating sleeves are arranged with end gaps. Elastomer seal is fitted between the said nozzles faces and surfaces of cylindrical electrically insulating sleeves. The proposed joint comprises also stepwise insulating bush on the joint one end and metal cover on its other end. The screws jointing the pipe section ends are regularly arranged along the circumference screwed in the casing. The metal cover and casing have no rigid coupling with the pipeline.

EFFECT: higher reliability of electrically insulated joint.

1 dwg