| 摘要 |
The invention relates to a flexible tubular duct (1) for transporting gases under high pressure in the field of offshore oil exploitation. The duct is of the unlinked and smooth passageway type, and comprises from inside to outside an inner polymer tube (2), a pressure vault (3) formed by the short-pitch rolling of at least one wire, a first inner pair (4, 5) of crossed traction armour plies, an intermediate polymer sleeve (6), a second outer pair (7, 8) of crossed traction armour plies and an outer polymer sleeve (9) and it is characterized in that the inner pair (4, 5) of traction armour plies is wound with a helical angle of less than 35° and in that the outer pair (7, 8) of traction armour plies is wound with a helical angle substantially equal to 55°. |
