| 摘要 |
<p>A direct electric heating system for subsea steel pipeline with a piggyback cable arranged on the pipeline, where at least one shell-type magnetic core encompasses the pipeline with its piggyback cable. The shell-type magnetic core may be continuously or discretely arranged on the pipeline. The shell-type magnetic core may be applied around the pipeline with piggyback cable. This direct electric heating system improves the pipeline current ratio through introduction of magnetic coupling between piggyback cable and pipeline thus significantly reducing power consumption and current in sea water.</p> |
