Dynamic and static submarine cable with continuous wire core and production method thereof

Abstract

The invention provides a dynamic and static submarine cable with continuous wire core, which has a continuous wire core, a static section, a dynamic section, and a transition section between the static section and the dynamic section. The outer core is extruded to form an inner sheath, and the inner sheath The part of the sleeve located in the transition section is marked as a transition point; the armored steel wires are twisted on the inner sheath to form at least one inner armor layer, and the position corresponding to the transition point is marked on the inner armor layer; from the dynamic section The armored steel wires are stranded in the direction of the transition section to form at least one outer armor layer, and the outer armor layer extends to the transition section, the inner armor layer and the outer armor layer are cut off at the transition point, and the inner armor layer through the transition section layer and the outer armor layer are combined to install the sealing assembly. The present invention also provides a production method of a dynamic and static submarine cable with continuous wire cores. The wire cores are continuously produced, and an armor layer and a sheath layer are formed outside the wire cores, and the armored steel wire of the armor layer is cut off at the transition section, and combined with Install the seal assembly.

Description

technical field [0001] The invention relates to the related technical field of submarine cables, and more precisely relates to a static and dynamic submarine cable with continuous wire cores and a production method thereof. Background technique [0002] As the development of offshore oil and gas resources and new offshore energy gradually moves to the deep sea, the submarine cable responsible for the transmission of electric energy and communication signals has gradually become a key and costly component of the entire system. The dynamic submarine cable in the prior art is usually composed of a cable core for transmitting current and an optical cable core for transmitting optical signals to form a submarine cable core, and several sheath layers, armor layers, etc. are arranged outside. Dynamic submarine cables are gradually developing in the direction of large water depth, high voltage, and large-capacity signal transmission, and the corresponding protection requirements for...

AI Technical Summary

Problems solved by technology

The use of continuous connection has defects such as large transmission loss, easy to be affected by moisture, and high risk of breakdown under high electric field stress.

[0004] In order to avoid the defects of continuous connection, it is considered that the dynamic segment and the static segment adopt the whole root method, but with the increase of the transmission distance, the whole root method will lead to a great increase in cost

The static section of the submarine cable is prone to damage to the sheath when the seabed is unstable or under the influence of anchor damage. Under the water pressure, the seawater quickly penetrates along the armor layer to the entire cable body, and may be pressed into the electrical equipment compartment , resulting in a short circuit accident

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