4results about "Rigid-tube cables" patented technology

The invention relates to the technical field of submarine cables, and provides an umbilical cable and a punching method thereof. The umbilical cable comprises an inner sheath, an inner layer function unit group, an outer sheath, an outer layer function unit group and an armor layer. An inner layer function unit of the umbilical cable is arranged in an inner sheath, an outer layer function unit of the umbilical cable is arranged between the inner sheath and an outer sheath, an armor layer comprises an armor sheath and a metal armor, and the metal armor is arranged between the armor sheath and the outer sheath; the inner layer function unit group comprises a plurality of first steel pipe units which are uniformly distributed in the inner sheath along the circumferential direction, and second steel pipe units which are filled between the adjacent first steel pipe units. According to the umbilical cable provided by the invention, the first steel pipe unit and the second steel pipe unit can provide a plurality of gas or liquid transmission channels, and a stable supporting structure is formed in the inner layer of the umbilical cable.

The present invention relates to the technical field of submarine cables, and in particular to an umbilical cable and a punching method for an umbilical cable. The umbilical cable comprises: an inner sheath, an inner-layer functional unit group, an outer sheath, an outer-layer functional unit group, and an armor layer. The inner-layer functional unit group is arranged in the inner sheath, and the outer-layer functional unit group is arranged between the inner sheath and the outer sheath; the armor layer comprises an armor sheath and a metal armor, the metal armor being arranged between the armor sheath and the outer sheath; and a plurality of first water inlet holes are provided in the outer sheath at intervals in the direction of length, and a plurality of second water inlet holes are provided in the armor sheath at intervals in the direction of length. In the umbilical cable provided by the present invention, by providing a plurality of first water inlet holes in the outer sheath at intervals and providing a plurality of second water inlet holes in the armor sheath at intervals in the direction of length, seawater can sequentially pass through the second water inlet holes and the first water inlet holes and then enter the space where the outer-layer functional unit group is located. Thus, under the action of seawater, the friction torque between the outer-layer functional unit group and the outer sheath can be reduced, and birdcage failure caused by torque accumulation can also be avoided.

To provide a rigid submarine power cable joint for connecting a multicore DC dynamic submarine power cable to a static submarine power cable on the seabed.SOLUTION: A rigid submarine power cable joint 7 comprises an outer casing 7a. The outer casing 7a includes a first axial end face 7b and a second axial end face which is in an axial end of the outer casing 7a at an opposite side of the first axial end face 7b. The first axial end face 7b includes a single opening 7c in which a multicore dynamic submarine power cable is received, and the second axial end face includes two openings for receiving respective single-core submarine power cables.SELECTED DRAWING: Figure 3a

The present application relates to the technical field of submarine cable, and especially relates to a kind of umbilical cable and umbilical cable punching method.The umbilical cable includes: inner sheath, inner layer functional unit group, outer sheath, outer layer functional unit group and armored layer.Inner layer functional unit group is arranged in inner sheath, outer layer functional unit group is arranged between inner sheath and outer sheath, armored layer includes armored sheath and metal armor, metal armor is arranged between armored sheath and outer sheath;Multiple first water inlets are arranged in outer sheath along the length direction, and multiple second water inlets are arranged in armored sheath along the length direction.The umbilical cable provided by the present application can make seawater enter the space where outer layer functional unit group is located through second water inlet and first water inlet in sequence by arranging multiple first water inlets on outer sheath and multiple second water inlets on armored sheath along the length direction, and can reduce the friction torque between outer layer functional unit group and outer sheath under the action of seawater, to avoid torque accumulation causing birdcage accident.