MULTICHANNEL PIPELINE FOR TRANSPORTATION OF LIQUID AND/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 retainers to fix its position in the multichannel system. Retainers are made as stoppers embracing the sliding surface of the internal pipe. Outer surface of stoppers has radial supports connected with the outer tube by dampers composed as pneumatic chambers. Pneumatic chambers can be made from rubber-coated balls.

EFFECT: improved design, higher capacity, reliability and durability of the multichannel pipeline.

1 cl, 1 dwg