Patent ID: 9020333
Filing Date: 2015-04-28
Classification: F16L,H05B,Y10T

Abstract:
1. A line for transporting a fluid containing a hydrocarbon, said line comprising: a hollow inner tube extending in a longitudinal direction and intended for transporting said fluid in the inner tube, said inner tube having at least one electrically insulating outer surface, a heating layer on the inner tube and comprising carbon fibers embedded in a polymer material, a heat insulation layer around the heating layer, an outer tube around the heat insulation layer, said outer tube comprising carbon fibers embedded in a polymer material and being suitable to withstand an external pressure at least greater than 100 bar, spacing means placed between the inner tube and the outer tube to securely hold the outer tube at a distance from the inner tube, electrical power supply means intended to bring an electrical current to said heating layer, said electrical current flowing in said heating layer to heat the inner tube, and wherein the carbon fibers of the heating layer are wound around the inner tube with a first predetermined angle suitable to obtain an electrical resistance of said heating layer.