Submarine optical fiber composite high-voltage cable with detection function

A technology of optical fiber composite and high-voltage cables, which is applied in submarine cables, power cables with shielding layers/conductive layers, power cables, etc., can solve problems such as damage, achieve high efficiency, reduce losses, and have good promotional value.
CN102005259AInactive Publication Date: 2011-04-06HENGYANG HENGFEI CABLE CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
HENGYANG HENGFEI CABLE CO LTD
Publication Date
2011-04-06
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a submarine optical fiber composite high-voltage cable with a detection function. The cable comprises cable cores, an inner armor layer and an outer armor layer, wherein the inner armor layer is twisted on the cable cores; the outer armor layer is twisted on the inner armor layer; an outer sheath is formed on the outer armor layer by extrusion molding; an optical fiber sensor unit is arranged in a gap of the cable cores of the cable for measuring the temperature of the cable; and a bedding layer is arranged between the inner armor layer and the outer armor layer and an optical fiber sensor unit is distributed between the inner armor layer and the outer armor layer for detecting damage of the cable. A natural characteristic that transmission loss is increased when the optical fiber is used for bearing bending or transverse pressure is used, the damage of the cable can be detected, and accurate positioning can be realized through an instrument. The optical fiber sensor in the cable cores is used for measuring the temperature variation of the cable core of power cables.
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Description

technical field

[0001] The invention relates to the technical field of cables, in particular to a submarine optical fiber composite high-voltage cable with an optical fiber sensor and a detection function. Background technique

[0002] Submarine cables can be damaged by hooking of anchors or fishing gear, and by friction with rocks on the seabed during high tide. It is therefore very important to detect the presence of such damage and to determine the damage point for the maintenance of submarine cables. When the optical fiber is subjected to lateral pressure, the transmission loss of the optical fiber increases, so the mechanical damage of the submarine cable can be detected by observing the transmission loss. On the other hand, as we all know, using optical fiber as a sensor can also measure the internal temperature of the cable, and can find out whether the cable is overloaded or short-circuited, so that the alarm can be cut off in time to reduce losses. At the same time...

Claims

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