Electric heating – Metal heating – Of cylinders
Patent
1991-01-02
1993-10-26
Reynolds, Bruce A.
Electric heating
Metal heating
Of cylinders
392468, 392478, 392480, 392482, 174 47, 138103, 138149, 165184, 165185, H05B 600
Patent
active
052568440
ABSTRACT:
The present invention relates to a transportation pipe or conduit (10, 20, 30) which preferably is adapted to be installed on the seabed between a permanent or floating off-shore platform (3) and an on-shore terminal (4). The transportation conduit comprises an inner tube or pipe (21, 31) which primarily is constructed for the transmission of gas and/or oil or similar, a plurality of elements (23, 33) provided preferably as a layer outside the pipe (21, 31) and being adapted for transmission of preferably electric power. The elements (23, 33) which preferably might be made of copper or another material of appropriate electric conductivity, is insulated against the outer environment, for example by means of an appropriate thermal insulation material (24, 34). The inner tube (21, 31) might be manufactured from steel or a flexible material of considerable strength, and be surrounded by a corrosion preventing layer (22, 32). Some of the elements to be used for electric power transmission might be provided with a sufficient electric insulation.
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Grosvik Magne
Ronningen Kjell
Aker Engineering A/S
Hoang Tu
Reynolds Bruce A.
Standard Telefon og Kabelfabrik A/S
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