Optical fibre composite electric power seabed oil-filled cable

A composite technology of oil-filled cables and optical fibers, applied in submarine cables, insulated cables, communication cables, etc., can solve problems such as economic losses, and achieve the effects of improving short-circuit current, safe and reliable protection, and high electrical performance

Inactive Publication Date: 2008-07-02
上海电缆厂集团有限公司
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  • Abstract
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Problems solved by technology

Link interruption will result in significant economic losses

Method used

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  • Optical fibre composite electric power seabed oil-filled cable

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0016] An optical fiber composite power seabed oil-filled cable, comprising a conductor layer, a hollow oil channel is arranged in the conductor layer, an oil-paper insulating layer is arranged outside the conductor layer, a metal sheath layer is arranged outside the oil-paper insulating layer, and a metal sheath layer is arranged outside the metal sheath layer There is a protective layer, which is characterized in that an optical unit layer is arranged in the protective layer, and the optical unit layer is formed by twisting optical fibers and polyethylene filling strips at intervals. The metal sheath layer includes a lead sheath layer. A return line layer is arranged outside the lead sheath layer. The return line layer is composed of flat copper wires. An inner liner is arranged between the lead sheath layer and the return line layer.

[0017] Wherein...

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Abstract

The invention discloses an optical fiber composite power seabed oil-filled cable, which is characterized in that a light unit layer is arranged in a defending layer. The light unit layer is twisted by an optical fiber and polyethylene filled bar at interval. A metal protecting layer comprises a lead protecting layer, wherein a return feeder layer is arranged outside the lead protecting layer. The return feeder layer is assembled by a flat copper line. A lining layer is arranged between the lead protecting layer and the return feeder layer. The return feeder layer is arranged in the metal protecting layer so as to improve the short circuit current of the metal protecting layer and help to improve the current carrying amount of the cable at the same time. The invention has the advantages of higher electrical performance and sufficient mechanical intensity by combining the seabed optical fiber cable and seabed power cable.

Description

Technical field: [0001] The invention relates to a submarine cable, in particular to an optical fiber composite power submarine oil-filled cable suitable for laying and working in deep sea. Background technique: [0002] Oil-filled cable is a cable structure that uses the principle of supplementary impregnation to eliminate the air gap formed in the insulating layer to improve the working field strength of the cable. Oil-filled cables can be divided into two types according to the structure of the sheath, one is self-contained oil-filled cables, and the other is steel pipe oil-filled cables. The sheath structure of self-contained oil-filled cables is the same as that of ordinary cables, using lead or aluminum sheaths. Self-contained oil-filled cables generally have an oil passage connected to supplementary impregnation equipment in the center of the core. When the temperature of the cable rises, the impregnating agent expands when heated, and the expanded impregnating agent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/14H01B11/22H01B7/17
Inventor 莫临元丁敏储茂盛贺金红
Owner 上海电缆厂集团有限公司
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