Flexible pipeline

Flexible pipeline for transporting a cold liquid or gas medium comprising:

• an outer limiting tube corrugated transversely to its longitudinal direction;
• two metal pipes inside said limiting tube, said two metal pipes corrugated transversely to said longitudinal direction, said metal pipes for guiding said cold liquid or gas medium;
• and
• a metal cooling pipe, also within said outer limiting tube for guiding a second cold liquid or gas medium,
• wherein said two metal pipes are each surrounded by a thermal insulation,
• wherein said two metal pipes and said metal cooling pipe are all directly abutting one another within said outer limiting tube,
• wherein said cold liquid or gas medium, during the operation of the pipeline is led in different directions, one direction through a first of said metal pipes and the other direction through a second of said metal pipes,
• wherein surrounding said at least two metal pipes and said metal cooling pipe is a closed sleeve composed of a conductive thermal material which is in contact with at least said metal cooling pipe.