DEVICE FOR HEATING AND THERMALLY INSULATING AT LEAST ONE UNDERSEA PIPELINE

摘要

The invention relates to a device for heating and thermally insulating at least one main undersea pipeline (1a) for the circulation of a warm flow comprising a heat insulation coating (2) which wraps one or several main pipelines (1a) and is covered with an external waterproof jacket (3) and an internal chamber (4) which is coaxially arranged with respect to said jacket (3). The insulating coating wraps the internal chamber (4) in the annular space between said external jacket (3) and the internal chamber (4). The main pipeline (1a) extends inside the internal chamber (4) which is embodied, preferably, in the form of a cylinder. The inventive device also comprises means (61) for maintaining the temperature of a liquid coolant (5) and for circulating said coolant inside the internal chamber in such a way that the main pipeline (1a) which is arranged in the chamber (4) is surrounded by the coolant (5).