MULTICHANNEL PIPELINE FOR TRANSPORTATION OF LIQUID OR GAS Russian patent published in 2016 - IPC F16L9/18 

FIELD: transportation.

SUBSTANCE: invention relates to pipeline transport, particularly, to main oil and gas lines, pipelines of chemical, metallurgical and pulp and paper industries, as well as urban water supply mains. Multichannel pipeline comprises external pipe and at least one internal pipe laid on inner surface of external pipe. In gap between external and internal pipes external pipeline channel is formed. In internal pipe inner pipeline channel is formed, which is insulated by medium transported through external pipeline channel. Inner pipeline channel has its position retainers in multichannel system made in form of bushings embracing internal pipe surface by sliding fit. Outer surface of bushings has radial stops of dampers in form of springs. Springs end with rollers resting on outer tube with possibility to roll.

EFFECT: improved design, higher capacity, reliability, durability of multichannel pipeline, improved conditions of internal pipe mounting.

1 cl, 1 dwg