WO2022041526A1 - 一种降低直流电阻的有中继海底光缆结构 - Google Patents

一种降低直流电阻的有中继海底光缆结构 Download PDF

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WO2022041526A1
WO2022041526A1 PCT/CN2020/131909 CN2020131909W WO2022041526A1 WO 2022041526 A1 WO2022041526 A1 WO 2022041526A1 CN 2020131909 W CN2020131909 W CN 2020131909W WO 2022041526 A1 WO2022041526 A1 WO 2022041526A1
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conductive
resistance
submarine optical
steel wire
reducing
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PCT/CN2020/131909
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English (en)
French (fr)
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胥国祥
许人东
陈金龙
李涛
刘斌
康慧灵
王悦
项怡
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江苏亨通海洋光网系统有限公司
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Publication of WO2022041526A1 publication Critical patent/WO2022041526A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4415—Cables for special applications
    • G02B6/4427—Pressure resistant cables, e.g. undersea cables

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  • the invention relates to the technical field of submarine optical cables, in particular to a structure of a submarine optical cable with relays that reduces direct current resistance.
  • submarine optical cables have been paid more and more attention by communication operators because of their unique reliability and anti-interference.
  • Most submarine optical cables contain feeding structures, but for transoceanic communication systems, the length of submarine optical cables is as short as hundreds of kilometers and as long as tens of thousands of kilometers.
  • the resistance of the system In order to ensure the normal operation of the system, it is necessary to reduce the resistance of the system.
  • the terminal voltage of the submarine optical cable communication system may reach 20 kV or even higher, and a large part of the power loss is consumed in the Therefore, it is urgent to reduce the DC resistance of submarine optical cables.
  • the traditional way to reduce the DC resistance of submarine optical cables is usually to increase the thickness of copper pipes.
  • the copper tubes are welded by argon arc welding, and then drawn to make the copper tubes close to the inner armor steel wire.
  • the thickness of the copper tube is limited.
  • the current thickness of the copper tube welding is basically concentrated at 0.4-0.7mm, which is difficult to meet the needs of increasing the thickness of the copper tube.
  • the leakage welding rate of argon arc welding will also increase, which increases the instability factor. If the double-layer welded copper tube is used to increase the overall thickness, although the DC resistance can also be reduced, the introduction of two sets of welding equipment will double the cost, and the defect rate will also double.
  • the main technical problem to be solved by the present invention is to provide a relayed submarine optical cable structure with reduced direct current resistance, so as to reduce the direct current resistance of the submarine optical cable and ensure production convenience and structural stability.
  • a technical solution adopted by the present invention is to provide a relayed submarine optical cable structure with reduced DC resistance, comprising: an optical unit, an inner armor steel wire, a resistance reduction layer, a conductive tube and an insulating sleeve, the The optical unit, the inner armor steel wire, the resistance reduction layer, the conductive tube and the insulating sleeve are arranged from the inside out, and the resistance reduction layer includes at least one conductive tape which extends axially along the conductive tube and wraps the inner armor On the wire or helically wound on the inner armor wire.
  • the conductive tape is a copper tape.
  • the conductive tube is a coiled and welded copper tube.
  • the optical unit includes a steel pipe and an optical fiber located in the steel pipe.
  • the steel pipe is filled with fiber paste.
  • the width of the gap between two edges of the conductive tape or between two adjacent conductive tapes is less than 0.5 mm .
  • the beneficial effects of the present invention are: a relay submarine optical cable structure for reducing the direct current resistance pointed out by the present invention, by adding a resistance reducing layer between the inner armor steel wire and the conductive pipe, the direct current resistance of the submarine optical cable is reduced, and the resistance
  • the lowering layer does not need welding, which is beneficial to reduce the leakage welding rate of argon arc welding, ensuring the convenience of production, high yield, and more stable practicality.
  • FIG. 1 is a schematic structural diagram of a preferred embodiment of a structure of a submarine optical cable with relays that reduces DC resistance according to the present invention
  • Fig. 2 is a kind of structural representation of the present invention that reduces direct current resistance and has the structure schematic diagram of another preferred embodiment of the submarine optical cable structure with relay;
  • FIG. 3 is a schematic structural diagram of yet another preferred embodiment of a submarine optical cable structure with a reduced DC resistance according to the present invention.
  • embodiments of the present invention include:
  • the optical unit includes a steel tube 5 and the optical fiber 6 located in the steel pipe 5, the optical fiber 6 is protected by the steel pipe 5 to avoid extrusion damage, and the steel pipe 5 is filled with hydrogen-absorbing fiber paste to prevent water and hydrogen from entering the steel pipe 5.
  • the optical unit, the inner armor steel wire 4, the resistance reducing layer 3, the conductive tube 2 and the insulating sleeve 1 are arranged from the inside to the outside. complex environment.
  • the resistance reduction layer 3 includes at least one conductive tape, which extends axially along the conductive tube 2 and is longitudinally wrapped on the inner armor steel wire 4 or spirally wound on the inner armor steel wire 4, which increases the conductivity of the conductive material. thickness, reducing the overall DC resistance.
  • the conductive tape is a copper tape
  • the conductive tube 2 is a copper tube welded vertically.
  • the conductive tape and the conductive tube 2 are made of the same copper material to further reduce the DC resistance.
  • the addition of the resistance reducing layer 3 is beneficial to reduce the thickness of the original conductive tube 2, and further reduce the difficulty of argon arc welding and the welding leakage rate.
  • the first one uses a single conductive tape, and the two edges of the conductive tape are wound to form a gap 7, and the width of the gap 7 is less than 0.5mm, so as to ensure that the conductive tube 2 will not be embedded in the gap when drawing 7, to ensure the consistency of the diameter of the conductive tube 2;
  • the second type uses multiple conductive tapes.
  • two conductive tapes are used as an example.
  • the two opposite conductive tapes are wrapped with the inner armor steel wire 4, and the gap between the two adjacent conductive tapes is 7
  • the width is less than 0.5mm.
  • the resistance reducing layer 3 uses a single conductive tape, the conductive tape is spirally wound on the inner armor steel wire 4, and the spiral gap between the conductive tapes is less than 0.5mm, and it is guaranteed not to overlap, so as to ensure When the conductive tube 2 is drawn, it will not be embedded in the gap and will not be arched, so as to ensure the consistency of the diameter of the conductive tube 2 .
  • the gap 7 and the welding seam of the conductive tube 2 are required to be dislocated, which is beneficial to the welding of the conductive tube 2 and improves the sealing performance.
  • the resistance reducing layer 3 and the conductive tube 2 need to be realized on one production line. Before the welding of the conductive tube 2 is completed, the bending of the resistance reducing layer 3 is avoided, so as to avoid the deformation of the resistance reducing layer 3 and the unevenness of the gap 7 caused by bending.
  • a relay submarine optical cable structure for reducing the DC resistance pointed out by the present invention the conductive tube still adopts the method of argon arc welding to ensure the original hydrogen resistance function, and through the cooperation of the resistance reducing layer and the conductive tube, The DC resistance of the submarine optical cable is reduced, the production difficulty is low, and the yield is high.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Insulated Conductors (AREA)
  • Communication Cables (AREA)

Abstract

一种降低直流电阻的有中继海底光缆结构，包括：光单元、内铠钢丝(4)、电阻降低层(3)、导电管(2)和绝缘套(1)，光单元、内铠钢丝(4)、电阻降低层(3)、导电管(2)和绝缘套(1)由内而外进行设置，电阻降低层(3)包括至少一根导电带，导电带沿导电管(2)轴向延伸并包裹在内铠钢丝(4)上或者螺旋缠绕在内铠钢丝(4)上。降低直流电阻的有中继海底光缆结构通过在内铠钢丝(4)和导电管(2)之间增加电阻降低层(3)，实现了海底光缆直流电阻的降低，而且电阻降低层(3)无需焊接，有利于降低氩弧焊的漏焊率，确保生产的便利性，成品率高。

Description

一种降低直流电阻的有中继海底光缆结构 技术领域
本发明涉及海底光缆技术领域，特别是涉及一种降低直流电阻的有中继海底光缆结构。
背景技术
近年来，海底光缆因其得天独厚的可靠性以及抗干扰性，越来越受到通信运营商的重视。大部分海底光缆中包含馈电结构,但对于跨洋通信系统，海底光缆的长度短则几百公里，长则成千上万公里，为了保证系统的正常运行，需要降低系统的电阻。基于目前海底光缆的电阻(1Ω/km)、中继器和分支器的电阻，海底光缆通信系统的端站电压可能达到20千伏乃至更高，而电能的损耗很大一部分都是消耗在了缆上，故降低海底光缆的直流电阻迫在眉睫。
传统降低海底光缆直流电阻的方式，通常是通过增加铜管厚度的方式来实现。海底光缆生产时，为了保证结构的稳定性以及光纤阻氢的功效，铜管均采用氩弧焊的方式进行焊接，再通过拉拔使得铜管紧贴在内铠钢丝上。受限于目前氩弧焊设备功率的能力，铜管的厚度存在限制，目前的铜管焊接的厚度基本集中于0.4～0.7mm，难以满足增加铜管厚度的需求。
另外，虽然增加铜管的厚度带来了直流电阻的降低，但同时氩弧焊的漏焊率也会随之增加，增加了不稳定因素。若采用双层焊接铜管的方式来增加整体的厚度，虽然也能降低直流电阻，但是两套焊接设备的引入，成本对应成倍提升，另外缺陷率也对应成倍提升。
发明内容
本发明主要解决的技术问题是提供一种降低直流电阻的有中继海底光缆结构，降低海底光缆直流电阻，确保生产便利性和结构稳定性。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种降低直流电阻的有中继海底光缆结构，包括：光单元、内铠钢丝、电阻降低层、导电管和绝缘套，所述光单元、内铠钢丝、电阻降低层、导电管和绝缘套由内而外进行设置，所述电阻降低层包括至少一根导电带，所述导电带沿导电管轴向延伸并包裹在内铠钢丝上或者螺旋缠绕在内铠钢丝上。
在本发明一个较佳实施例中，所述导电带为铜带。
在本发明一个较佳实施例中，所述导电管为卷制焊接的铜管。
在本发明一个较佳实施例中，所述光单元包括钢管及位于钢管内的光纤。
在本发明一个较佳实施例中，所述钢管中填充有纤膏。
在本发明一个较佳实施例中，所述导电带沿导电管轴向包裹在内铠钢丝上时，导电带的两个边缘之间或者相邻两个导电带之间的缝隙宽度小于0.5mm。
本发明的有益效果是：本发明指出的一种降低直流电阻的有中继海底光缆结构，通过在内铠钢丝和导电管之间增加电阻降低层，实现了海底光缆直流电阻的降低，而且电阻降低层无需焊接，有利于降低氩弧焊的漏焊率，确保生产的便利性，成品率高，实用更加稳定性。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图，其中：
图1是本发明一种降低直流电阻的有中继海底光缆结构一较佳实施例的结构示意图；
图2是本发明一种降低直流电阻的有中继海底光缆结构另一较佳实施例的 结构示意图；
图3是本发明一种降低直流电阻的有中继海底光缆结构又一较佳实施例的结构示意图。
具体实施方式
下面将对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
请参阅图1～图3，本发明实施例包括：
如图1所示的降低直流电阻的有中继海底光缆结构，包括：光单元、内铠钢丝4、电阻降低层3、导电管2和绝缘套1，在本实施例中，光单元包括钢管5及位于钢管5内的光纤6，通过钢管5进行光纤6的保护，避免挤压损伤，而且钢管5中填充有吸氢的纤膏，防止水和氢进入钢管5。
光单元、内铠钢丝4、电阻降低层3、导电管2和绝缘套1由内而外进行设置，通过内铠钢丝4提升抗拉强度，并通过绝缘套1进行防水和绝缘，适应海水中的复杂环境。在本实施例中，电阻降低层3包括至少一根导电带，导电带沿导电管2轴向延伸并纵包在内铠钢丝4上或者螺旋缠绕在内铠钢丝4上，增加了导电材料的厚度，降低了整体的直流电阻。
在本实施例中，导电带为铜带，导电管2为纵包焊接的铜管，导电带和导电管2采用相同的铜材，进一步降低直流电阻。另外，电阻降低层3的添加，有利于降低原导电管2的厚度，进一步降低氩弧焊的难度及漏焊率。
导电带沿导电管2轴向纵包在内铠钢丝上时，根据导电带的数量有以下3种结构：
第一种，如图1所示，采用单个导电带，导电带的两个边缘卷绕后形成缝隙7，隙7的宽度小于0.5mm，从而保证导电管2在拉拔时，不会嵌入缝隙7中，保证导电管2直径的一致性；
第二种，如图2所示，采用多个导电带，图中以两个导电带为例，相对的两根导电带进行内铠钢丝4的包裹，相邻两个导电带之间的缝隙7宽度小于0.5mm。
第三种，如图3所示，电阻降低层3采用单个导电带，导电带螺旋卷绕在内铠钢丝4上，且导电带间的螺旋缝隙小于0.5mm，并保证不搭接，从而保证导电管2在拉拔时，不会嵌入缝隙中，也不会拱起，保证导电管2直径的一致性。
另外，生产过程中，要求缝隙7与导电管2的焊缝错位，有利于导电管2的焊接并提升密封性。电阻降低层3和导电管2需要在一条生产线上实现，在导电管2焊接完成之前，避免电阻降低层3的弯曲，从而避免因弯曲导致电阻降低层3的变形及缝隙7的不均匀性。
综上，本发明指出的一种降低直流电阻的有中继海底光缆结构，导电管依然采用氩弧焊的方式，保证了原有的阻氢功能，并通过电阻降低层与导电管的配合，降低了海底光缆的直流电阻，生产的难度低，成品率高。
以上仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书内容所作的等效结构或等效流程变换，或直接或间接运用在其它相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (6)

  1. 一种降低直流电阻的有中继海底光缆结构，其特征在于，包括：光单元、内铠钢丝、电阻降低层、导电管和绝缘套，所述光单元、内铠钢丝、电阻降低层、导电管和绝缘套由内而外进行设置，所述电阻降低层包括至少一根导电带，所述导电带沿导电管轴向延伸并包裹在内铠钢丝上或者螺旋缠绕在内铠钢丝上。
  2. 根据权利要求1所述的降低直流电阻的有中继海底光缆结构，其特征在于，所述导电带为铜带。
  3. 根据权利要求1所述的降低直流电阻的有中继海底光缆结构，其特征在于，所述导电管为卷制焊接的铜管。
  4. 根据权利要求1所述的降低直流电阻的有中继海底光缆结构，其特征在于，所述光单元包括钢管及位于钢管内的光纤。
  5. 根据权利要求4所述的降低直流电阻的有中继海底光缆结构，其特征在于，所述钢管中填充有纤膏。
  6. 根据权利要求1所述的降低直流电阻的有中继海底光缆结构，其特征在于，所述导电带沿导电管轴向包裹在内铠钢丝上时，导电带的两个边缘之间或者相邻两个导电带之间的缝隙宽度小于0.5mm。
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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111897070B (zh) * 2020-08-26 2022-09-06 江苏亨通海洋光网系统有限公司 一种降低直流电阻的有中继海底光缆结构

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4349694A (en) * 1976-05-25 1982-09-14 Les Cables De Lyon Sub-marine telephone cable
JPS63274014A (ja) * 1987-05-01 1988-11-11 Sumitomo Electric Ind Ltd 光ファイバ複合単心電力ケ−ブル
CN101943777A (zh) * 2009-07-08 2011-01-12 江苏通光光电子有限公司 一种抗侧压海底光缆缆芯
CN106772845A (zh) * 2016-11-28 2017-05-31 江苏通光海洋光电科技有限公司 一种大截面海底光缆
CN110426798A (zh) * 2019-07-08 2019-11-08 江苏亨通海洋光网系统有限公司 一种大容量低电阻跨洋有中继海底光缆
CN111443443A (zh) * 2020-03-18 2020-07-24 江苏亨通海洋光网系统有限公司 一种多维度阻水阻氢海底光缆及其成型工艺
CN111897070A (zh) * 2020-08-26 2020-11-06 江苏亨通海洋光网系统有限公司 一种降低直流电阻的有中继海底光缆结构

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2426918A1 (fr) * 1978-05-22 1979-12-21 Post Office Cable de fibres optiques convenant notamment a un usage sous-marin
DE3706740A1 (de) * 1987-02-27 1988-09-08 Siemens Ag Zugfestes optisches seekabel
JPH0637369Y2 (ja) * 1988-06-24 1994-09-28 日本大洋海底電線株式会社 海底光ケーブル
US6201189B1 (en) * 1995-06-13 2001-03-13 Commscope, Inc. Coaxial drop cable having a mechanically and electronically continuous outer conductor and an associated communications system
CN107240459A (zh) * 2017-07-12 2017-10-10 中天电力光缆有限公司 一种光电复合缆及其制造方法
CN207264827U (zh) * 2017-07-12 2018-04-20 中天电力光缆有限公司 一种光电复合缆
CN108109742A (zh) * 2017-12-15 2018-06-01 中天科技海缆有限公司 海底光缆及其制作方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4349694A (en) * 1976-05-25 1982-09-14 Les Cables De Lyon Sub-marine telephone cable
JPS63274014A (ja) * 1987-05-01 1988-11-11 Sumitomo Electric Ind Ltd 光ファイバ複合単心電力ケ−ブル
CN101943777A (zh) * 2009-07-08 2011-01-12 江苏通光光电子有限公司 一种抗侧压海底光缆缆芯
CN106772845A (zh) * 2016-11-28 2017-05-31 江苏通光海洋光电科技有限公司 一种大截面海底光缆
CN110426798A (zh) * 2019-07-08 2019-11-08 江苏亨通海洋光网系统有限公司 一种大容量低电阻跨洋有中继海底光缆
CN111443443A (zh) * 2020-03-18 2020-07-24 江苏亨通海洋光网系统有限公司 一种多维度阻水阻氢海底光缆及其成型工艺
CN111897070A (zh) * 2020-08-26 2020-11-06 江苏亨通海洋光网系统有限公司 一种降低直流电阻的有中继海底光缆结构

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