PIPE FLARING DEVICE Russian patent published in 2010 - IPC E21B29/10 B21D39/00 

FIELD: oil and gas production.

SUBSTANCE: pipe flaring device comprising a hollow rod in the form of a cone narrowed downwards with union and pin threads, a windowed body rotatable and boundedly longitudinally movable in relation to the rod cone, the rollers mounted in the windows of the body and inclined to the axis of the rod, interacting with the rod and comprising cylinders equipped in its bottom part with radial facets. And from the top, the cone the hollow rod has a cylinder with a screw trapezoid flute with its inclined surface turned upwards, and from beneath is comprises a cylindrical sample; the body above the windows is equipped with a stopper load-assisted from inside and interacting with the screw flute and the cylindrical sample.

EFFECT: simplicity in manufacturing and assembly that ensures preventing the emergencies.

3 dwg