FLEXIBLE RESILIENT PIPELINE END JOINT Russian patent published in 2014 - IPC F16L33/00 

FIELD: oil-and-gas industry.

SUBSTANCE: invention relates to hardware to be incorporated with flexible pipelines to be connected to oil and gas well mouth fittings. This device consists of resilient pipeline proper composed by inner and outer shells with reinforcing ply of threads arranged there between and covered by turns of helical wire winding. Union is fitted in flexible pipe axial channel and provided with ledge composed of cones converging by their bases and having notches on outer side ad connection thread for connection with production tree. Bottom box squeezes flexible pipe from outside, said bottom box being fitted in the case to rest of collet, collet flexible elements being provided with notches and pressed by mid sleeve conical surface against load bearing layer of threads with locking at union ledge outer notches. Said threads are uniformly distributed over said ledge and pressed thereto by unclamping sleeve displaced by turning of lock sleeve.

EFFECT: higher load-bearing capacity.

1 dwg