DEVICE FOR PROTECTION OF SEAL COLLAR OF MAIN PIPELINE JUNCTIONS Russian patent published in 2014 - IPC F16L7/00 

FIELD: machine building.

SUBSTANCE: proposed device comprises split end plate composed of at least two segments and cylindrical case. End plate ion working state includes a circular cutout (hole) to surround (to be fitted inside) the pipeline. Cutout center is shifted relative to end plate center. Cylindrical case is splitted along at least two generating lines of the cylinder to cover a section of casing pipe by one of its edges. Note here that said cylindrical case features such length and cross-section that said case housed said end plate with its axis located perpendicular to axis of cylindrical surface and pipeline axis. Ledge is made inside the case cylindrical surface to limit displacement of end place along case axis.

EFFECT: higher strength, lower production costs, simplified manufacture.

22 cl, 2 dwg