| 摘要 |
<p>A system (2,30,60) for electric heating of at least one pipeline section comprising: a first pipe-in-pipe flowline (A1,A2,A3) comprising a first electrically conductive inner pipe section (10,32,62) : a second pipe-in-pipe flowline (B1,B2,B3) comprising a second electrically conductive inner pipe section (20,40,70); at least one electrical current pathway (14, 52, 64b, 66b, 92, 72b, 74b) between the first and second inner pipes sections; a power input (12,46,80) connected to the first inner pipe section; and a current return (22,48,82) connected to the second inner pipe section to receive current from the power input, first inner pipe section and electrical pathway.</p> |
