CONNECTION OF MULTIROW COLUMNS ( VARIANTS ) Russian patent published in 2004 - IPC

FIELD: pipe-line transport. SUBSTANCE: invention refers to connection of multirow or multichannel columns used in pipe-line transport, specifically, to convey stratal fluid to surface from oil wells. Connection includes two flanges with longitudinal channels which number corresponds to number of linked pipes. Self-sealing collar is placed between flanges. Self-sealing collar comprises separate sealing elements in the form of interconnected bushings, each element seals individual channel. EFFECT: reduced labor input to manufacture of connection, increased reliability of sealing of spaced of interconnected pipes. 2 cl, 9 dwg