| 摘要 |
The invention relates to a flexible unbonded pipe for sub sea fluid transfer. The pipe comprises an inner sealing sheath defining a bore and a centre axis. Inside the inner sealing sheath the pipe comprises a carcass. The pipe further comprises a pair of reinforcement Iayers consisting essentially of helically wound elongate armoring elements of fiber reinforced polymer material. The elongate armoring elements of the innermost of the pair of reinforcement Iayers are wound in a first winding direction with an angle alpha to the centre axis, and the elongate armoring elements of the outermost of the pair of reinforcement layers are wound in a second winding direction with an angle beta to the centre axis, wherein alpha is greater than or equal to beta multiplied with phi devided by two, alpha is about 65° or Iess. The pipe preferably comprises an anti-creep Iayer placed between the inner sealing sheath and the innermost of the pair of reinforcement Iayers. |
