ARTICULATED JOINT DIMINISHING STRESSED STATE OF RISER Russian patent published in 2002 - IPC

FIELD: sea platforms, specifically, risers set against bottom of floating sea platforms. SUBSTANCE: articulated joint diminishing stressed state of riser is intended for use with tube of riser in floating systems when platform is subjected to alternating motion caused by wind, currents and waves. Tube of riser has one end capable of resting against sea bed and upper part of tube is tailored for passage through limiting hole in bottom of platform. Tube includes unit of ball-and-socket joint and coupling anchored for withdrawal in bottom of platform, in limiting hole, and branch pipe fixed with center part in ball-and-socket joint. Tube of riser located in branch pipe is fitted with liners compensating for wear. EFFECT: installation of support with riser on bottom of platform that can be easily removed or replaced. 5 cl, 6 dwg