INSULATED PIPE AND PROCEDURE FOR ITS FABRICATION Russian patent published in 2011 - IPC F16L59/14 

Abstract RU 2419737 C2

FIELD: machine building.

SUBSTANCE: procedure for fabrication of insulated unit "pipe-in-pipe" consists in following stages: in facilitating unit containing at least one internal pipe and external pipe surrounding at least one internal pipe creating circular space between external surface of at least one internal pipe and internal surface of external pipe. There is also at least one container located in circular space. It contains porous flexible volumetric compressed material of porous particles. It is compressed in the container and has the first volume less, than volume of not compressed material. The procedure also consists in change of at least one container to reduce compression of compressed material to the second volume exceeding the first volume, thus creating an insulating unit "pipe-in-pipe". There are also disclosed versions of the insulating unit "pipe-in-pipe".

EFFECT: improved heat insulation of pipelines.

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RU 2 419 737 C2

Authors

Dajnon Dzhon L.

Kal'Kshtajn Khobart S.

Maiti Nirmalia

Paintal Ravidzhit

Dzhonson Aaron Kh.

Dju Plessi Andris

Dates

2011-05-27Published

2006-06-06Filed