Dynamic and static submarine cable and manufacturing method thereof

By using continuous core production and the design of sealing and straightening components, the sealing problem of dynamic submarine cables under high electric field stress was solved, achieving stable transmission and improved safety, while reducing costs.

CN122455455APending Publication Date: 2026-07-24ZHONGTIAN TECH SUBMARINE CABLE CO LTD +4
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Patent Information

Application Number
CN202610664812.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-14
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing dynamic submarine cables are prone to breakdown under high electric field stress, which weakens the sealing effect, affects electrical performance, and the segmented connection increases cost and transmission loss.

Method used

The process employs a continuous production process for the wire core and incorporates a sealing and straightening assembly, including straightening components and sealing components. The straightening components counteract the tension of the wire core, enhance the sealing effect, prevent displacement, and fix the wire core to the seabed.

Benefits of technology

It achieves stable transmission without manual joints, enhances cable lifespan and safety, reduces manufacturing and construction costs, and improves sealing performance and resistance to external loads.

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Abstract

The invention discloses a dynamic and static submarine cable and a manufacturing method thereof. The dynamic and static submarine cable comprises a cable core and an inner sheath, each wire core comprises a static section, a dynamic section and a transition section, the inner sheath is provided with a transition point, the inner sheath is twisted with an inner armor layer, and the inner armor layer is marked; an outer coating layer is twisted on the inner armor layer of the static section, and an outer armor layer and an outer sheath are sequentially twisted on the inner armor layer of the dynamic section; the inner armoring layer and the outer armoring layer are cut off at the transition point, a sealing and straightening assembly is arranged and comprises a static section anchor, a dynamic section anchor, a sealing piece and a straightening piece, the dynamic inner armoring layer and the dynamic outer armoring layer are arranged in a cavity of the dynamic section anchor, the straightening piece is connected with the dynamic section anchor, the wire core is connected with the straightening piece, and the sealing piece is arranged in the cavity of the dynamic section anchor. The sealing element is arranged on the inner sheath; the static section anchor is connected with the straightening piece, and the static inner armor layer is arranged in a cavity of the static section anchor. And the straightening piece enables the wire core to be close to a straight line state, thereby counteracting tension of the spiral wire core and prolonging the service life.
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