ARRANGEMENT FOR COOLING POWER CABLES, POWER UMBILICALS AND CABLES

摘要

A power cable (C1), or power umbilical, comprising a number of electric high power cables (10) for transfer of large amounts of electric power/energy; filler material (2, 3, 4, 5, 6) in the form of stiff elongate plastic elements; the number of electric high power cables (10) and stiff elongate plastic elements (2, 3, 4, 5, 6) being gathered in a twisted bundle by means of a laying operation; a protective sheath (1) that encompasses the electric cables and the filler material; and at least one longitudinally extending channel (6) is provided for forced flow transportation of a cooling agent through said power cable/umbilical in order to cool down the electric high power cables (10) and their insulation material from a critical temperature value of about 90° C.

主权项

1. A power cable, or power umbilical, comprising:
a number of electric high power cables for transfer of large amounts of electric power/energy; filler material in the form of stiff elongate plastic elements located at least partially around and between the number of electric cables, said number of electric cables and stiff elongate plastic elements being gathered in a twisted bundle by means of a laying and closing operation; and at least one load carrying element at a predetermined location in the cross section of the power cable/umbilical, the number of electric cables, the stiff elongate plastic elements and the at least one load carrying element, are either laid in a continuous helix, or alternately laid, i.e. by continuously alternating direction, in the entire or part of the longitudinal extension of the power cable/umbilical, to form a bundle, and wherein at least one longitudinally extending channel is provided for forced flow transportation of a cooling agent through said power cable/umbilical in order to cool down the electric cables and their insulation material from a critical temperature value of about 90° C.