DETACHABLE JOINT OF LONG-LENGTH FLEXIBLE PIPE Russian patent published in 2015 - IPC F16L15/00 

FIELD: machine building.

SUBSTANCE: detachable joint of a long-length flexible pipe consists of screwed nipples set at the ends of the pipes being connected, with the end of one nipple being fitted with projections and the end of the other nipple - with mating grooves, and a threaded sleeve, thread on both nipples is made with different pitch and the threaded sleeve is made with two threaded sections. The thread pitch on each of them corresponds to the thread pitch on the mating nipple for their mutual connection, and the thread at all connected elements of the joint is made in the same direction. The nipple with greater thread pitch is fitted with a run-out in the form of a cylindrical groove or threadless part of the nipple with its length plus approaching distance of the connected pipes up to the tight connection being greater than the length of the thread with greater pitch at the sleeve.

EFFECT: higher reliability, strength and tightness of a joint.

7 cl, 10 dwg