CN111897070B - Relay submarine optical cable structure capable of reducing direct current resistance - Google Patents
Relay submarine optical cable structure capable of reducing direct current resistance Download PDFInfo
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- CN111897070B CN111897070B CN202010872232.1A CN202010872232A CN111897070B CN 111897070 B CN111897070 B CN 111897070B CN 202010872232 A CN202010872232 A CN 202010872232A CN 111897070 B CN111897070 B CN 111897070B
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- steel wire
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- optical cable
- cable structure
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- 230000003287 optical effect Effects 0.000 title claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 36
- 239000010959 steel Substances 0.000 claims abstract description 36
- 238000004804 winding Methods 0.000 claims abstract description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 15
- 229910052802 copper Inorganic materials 0.000 claims description 15
- 239000010949 copper Substances 0.000 claims description 15
- 239000013307 optical fiber Substances 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract description 16
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract description 14
- 229910052786 argon Inorganic materials 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Insulated Conductors (AREA)
- Communication Cables (AREA)
Abstract
The invention discloses a relayed submarine optical cable structure for reducing direct current resistance, which comprises: light unit, interior armour steel wire, resistance reduction layer, conductive tube and insulating cover, light unit, interior armour steel wire, resistance reduction layer, conductive tube and insulating cover set up by interior and outside, resistance reduction layer includes an at least conductive band, conductive band along conductive tube axial extension and parcel on interior armour steel wire or spiral winding on interior armour steel wire. According to the trunked submarine optical cable structure capable of reducing the direct-current resistance, the resistance reduction layer is additionally arranged between the inner armor steel wire and the conductive pipe, so that the direct-current resistance of the submarine optical cable is reduced, the resistance reduction layer does not need to be welded, the missing welding rate of argon arc welding is reduced, the convenience of production is ensured, and the yield is high.
Description
Technical Field
The invention relates to the technical field of submarine optical cables, in particular to a submarine optical cable structure with a relay, which reduces direct current resistance.
Background
In recent years, submarine optical cables are receiving more and more attention from communication operators because of their inherent reliability and interference resistance. Most submarine optical cables include a feed structure, but for a transoceanic communication system, the length of the submarine optical cable is hundreds of kilometers in short and thousands of kilometers in long, and in order to ensure the normal operation of the system, the resistance of the system needs to be reduced. Based on the resistance (1 Ω/km) of the current submarine optical cable and the resistances of the repeater and the splitter, the terminal station voltage of the submarine optical cable communication system may reach 20 kv or even higher, and a large part of the electric energy loss is consumed on the cable, so that the direct current resistance of the submarine optical cable is urgently reduced.
The traditional way of reducing the direct current resistance of the submarine optical cable is usually realized by increasing the thickness of a copper pipe. During the production of the submarine optical cable, in order to ensure the structural stability and the hydrogen resistance effect of the optical fiber, the copper pipes are welded in an argon arc welding mode, and then the copper pipes are tightly attached to the inner armor steel wires through drawing. The method is limited by the power capacity of the existing argon arc welding equipment, the thickness of the copper pipe is limited, the thickness of the existing copper pipe is basically concentrated in 0.4-0.7 mm, and the requirement for increasing the thickness of the copper pipe is difficult to meet.
In addition, although the increase of the thickness of the copper pipe reduces the direct current resistance, the welding leakage rate of argon arc welding is increased, and the unstable factors are increased. If the overall thickness is increased by adopting a double-layer copper pipe welding mode, although the direct current resistance can also be reduced, the cost is correspondingly increased in multiples by introducing two sets of welding equipment, and in addition, the defect rate is also correspondingly increased in multiples.
Disclosure of Invention
The invention mainly solves the technical problem of providing a relayed submarine optical cable structure for reducing direct current resistance, reducing the direct current resistance of the submarine optical cable, and ensuring the production convenience and the structural stability.
In order to solve the technical problems, the invention adopts a technical scheme that: there is provided a relayed submarine optical cable structure for reducing direct current resistance, comprising: light unit, interior armour steel wire, resistance reduction layer, conductive tube and insulating cover, light unit, interior armour steel wire, resistance reduction layer, conductive tube and insulating cover set up by interior and outside, resistance reduction layer includes an at least conductive band, conductive band along conductive tube axial extension and parcel on interior armour steel wire or spiral winding on interior armour steel wire.
In a preferred embodiment of the invention, the conductive strips are copper strips.
In a preferred embodiment of the present invention, the conductive tube is a rolled and welded copper tube.
In a preferred embodiment of the present invention, the light unit includes a steel tube and an optical fiber positioned within the steel tube.
In a preferred embodiment of the present invention, the steel tube is filled with a fiber paste.
In a preferred embodiment of the invention, when the conductive belt is wrapped on the inner armor steel wire along the axial direction of the conductive pipe, the width of a gap between two edges of the conductive belt or between two adjacent conductive belts is less than 0.5 mm.
The invention has the beneficial effects that: according to the relayed submarine optical cable structure capable of reducing the direct-current resistance, the resistance reducing layer is additionally arranged between the inner armor steel wire and the conductive tube, so that the direct-current resistance of the submarine optical cable is reduced, the resistance reducing layer does not need to be welded, the missing welding rate of argon arc welding is reduced, the convenience of production is ensured, the yield is high, and the structure is practical and more stable.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic structural view of a preferred embodiment of a relayed undersea optical cable structure for reducing DC resistance according to the present invention;
FIG. 2 is a schematic structural view of another preferred embodiment of a relayed undersea optical fiber cable structure for reducing DC resistance according to the present invention;
fig. 3 is a schematic structural view of another preferred embodiment of the structure of the submarine optical cable with repeater according to the present invention for reducing dc resistance.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1 to 3, an embodiment of the invention includes:
the structure of the repeatered undersea optical cable for reducing direct current resistance as shown in fig. 1 includes: light unit, interior armour steel wire 4, resistance reduction layer 3, contact tube 2 and insulating cover 1, in this embodiment, light unit includes steel pipe 5 and is located the optic fibre 6 of steel pipe 5, carries out optic fibre 6's protection through steel pipe 5, avoids the extrusion damage, and the filling has the fine cream of hydrogen absorption in the steel pipe 5 moreover, prevents that water and hydrogen from getting into steel pipe 5.
Light unit, interior armour steel wire 4, resistance reduction layer 3, contact tube 2 and insulating cover 1 are by interior and set up outward, promote tensile strength through interior armour steel wire 4 to carry out waterproofly and insulating through insulating cover 1, adapt to the complex environment in the sea water. In this embodiment, the resistance reduction layer 3 includes at least one conductive band, and the conductive band extends along the axial direction of the conductive tube 2 and longitudinally wraps the inner armor steel wire 4 or is spirally wound on the inner armor steel wire 4, so that the thickness of the conductive material is increased, and the overall direct current resistance is reduced.
In this embodiment, the conductive band is a copper strip, the conductive tube 2 is a copper tube longitudinally wrapped and welded, and the conductive band and the conductive tube 2 are made of the same copper material, so that direct current resistance is further reduced. In addition, the addition of the resistance reduction layer 3 is beneficial to reducing the thickness of the original conductive tube 2, and further reduces the difficulty and the missing welding rate of argon arc welding.
When the conductive band is longitudinally wrapped on the inner armor steel wire along the axial direction of the conductive tube 2, the following 3 structures are provided according to the number of the conductive band:
firstly, as shown in fig. 1, a single conductive belt is adopted, two edges of the conductive belt form a gap 7 after being wound, and the width of the gap 7 is less than 0.5mm, so that the conductive pipe 2 is prevented from being embedded into the gap 7 during drawing, and the diameter consistency of the conductive pipe 2 is ensured;
secondly, as shown in fig. 2, a plurality of conductive strips are adopted, two conductive strips are taken as an example in the figure, two opposite conductive strips wrap the inner armor steel wire 4, and the width of a gap 7 between two adjacent conductive strips is less than 0.5 mm.
Thirdly, as shown in fig. 3, the resistance reducing layer 3 is made of a single conductive tape, the conductive tape is spirally wound on the inner armor steel wire 4, and a spiral gap between the conductive tapes is smaller than 0.5mm, and is guaranteed not to be lapped, thereby guaranteeing that the conductive pipe 2 is not embedded into the gap and arched when being drawn, and guaranteeing the consistency of the diameter of the conductive pipe 2.
In addition, in the production process, the welding seam dislocation of the gap 7 and the conductive tube 2 is required, so that the welding of the conductive tube 2 is facilitated, and the sealing performance is improved. The resistance reducing layer 3 and the conductive tube 2 need to be realized on one production line, and before the welding of the conductive tube 2 is completed, the bending of the resistance reducing layer 3 is avoided, so that the deformation of the resistance reducing layer 3 and the nonuniformity of the gap 7 caused by the bending are avoided.
In conclusion, according to the relayed submarine optical cable structure capable of reducing direct current resistance, the conductive tube still adopts an argon arc welding mode, the original hydrogen resistance function is guaranteed, the direct current resistance of the submarine optical cable is reduced through the matching of the resistance reducing layer and the conductive tube, the production difficulty is low, and the yield is high.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, or direct or indirect applications in other related fields, which are made by the contents of the present specification, are included in the scope of the present invention.
Claims (4)
1. A relayed submarine optical cable structure for reducing direct current resistance, comprising: optical unit, interior armour steel wire, resistance reduction layer, contact tube and insulating cover, optical unit, interior armour steel wire, resistance reduction layer, contact tube and insulating cover set up by interior and outside, resistance reduction layer includes an at least conductive band, the conductive band is along the contact tube axial extension and parcel on interior armour steel wire or spiral winding on interior armour steel wire, the contact tube is for rolling up system welded copper pipe, when the conductive band is along the contact tube axial parcel on interior armour steel wire, the gap width between two edges of conductive band or between two adjacent conductive bands is less than 0.5 mm.
2. The repeatered undersea optical fiber cable structure for reducing direct current resistance of claim 1, wherein the conductive tape is a copper tape.
3. The repeatered undersea optical fiber cable structure for reducing direct current resistance according to claim 1, wherein the optical unit comprises a steel pipe and an optical fiber positioned inside the steel pipe.
4. The relayed submarine optical cable structure according to claim 3, wherein said steel pipe is filled with a fiber paste.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010872232.1A CN111897070B (en) | 2020-08-26 | 2020-08-26 | Relay submarine optical cable structure capable of reducing direct current resistance |
| PCT/CN2020/131909 WO2022041526A1 (en) | 2020-08-26 | 2020-11-26 | Relay submarine optical fiber cable structure capable of reducing direct current resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010872232.1A CN111897070B (en) | 2020-08-26 | 2020-08-26 | Relay submarine optical cable structure capable of reducing direct current resistance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111897070A CN111897070A (en) | 2020-11-06 |
| CN111897070B true CN111897070B (en) | 2022-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010872232.1A Active CN111897070B (en) | 2020-08-26 | 2020-08-26 | Relay submarine optical cable structure capable of reducing direct current resistance |
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| Country | Link |
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| CN (1) | CN111897070B (en) |
| WO (1) | WO2022041526A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111897070B (en) * | 2020-08-26 | 2022-09-06 | 江苏亨通海洋光网系统有限公司 | Relay submarine optical cable structure capable of reducing direct current resistance |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1191024A (en) * | 1995-06-13 | 1998-08-19 | 北卡罗来纳康姆斯科普公司 | Coaxial drop cable having a mechanically and electrically continuous outer conductor and an associated communication system |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2353120A1 (en) * | 1976-05-25 | 1977-12-23 | Cables De Lyon Geoffroy Delore | UNDERWATER TELEPHONE CABLE |
| FR2426918A1 (en) * | 1978-05-22 | 1979-12-21 | Post Office | Optical fibre cable for underwater use - includes metallic strength members around fibres which are in central channel of plastics esp. polypropylene, matrix |
| DE3706740A1 (en) * | 1987-02-27 | 1988-09-08 | Siemens Ag | Tension-resistant optical submarine cable |
| JP2585591B2 (en) * | 1987-05-01 | 1997-02-26 | 住友電気工業株式会社 | Optical fiber composite single core power cable |
| JPH0637369Y2 (en) * | 1988-06-24 | 1994-09-28 | 日本大洋海底電線株式会社 | Submarine optical cable |
| CN101943777A (en) * | 2009-07-08 | 2011-01-12 | 江苏通光光电子有限公司 | Side pressure resistant submarine optical fiber cable core |
| CN106772845A (en) * | 2016-11-28 | 2017-05-31 | 江苏通光海洋光电科技有限公司 | A kind of heavy in section submarine optical fiber cable |
| CN107240459A (en) * | 2017-07-12 | 2017-10-10 | 中天电力光缆有限公司 | A kind of optoelectronic composite cable and its manufacture method |
| CN207264827U (en) * | 2017-07-12 | 2018-04-20 | 中天电力光缆有限公司 | A kind of optoelectronic composite cable |
| CN208014406U (en) * | 2017-12-15 | 2018-10-26 | 中天科技海缆有限公司 | Submarine optical fiber cable |
| CN110426798A (en) * | 2019-07-08 | 2019-11-08 | 江苏亨通海洋光网系统有限公司 | A kind of large capacity low resistance transoceanically has relaying submarine optical fiber cable |
| CN111443443A (en) * | 2020-03-18 | 2020-07-24 | 江苏亨通海洋光网系统有限公司 | Multi-dimensional water-resistant and hydrogen-resistant submarine optical cable and forming process thereof |
| CN111897070B (en) * | 2020-08-26 | 2022-09-06 | 江苏亨通海洋光网系统有限公司 | Relay submarine optical cable structure capable of reducing direct current resistance |
-
2020
- 2020-08-26 CN CN202010872232.1A patent/CN111897070B/en active Active
- 2020-11-26 WO PCT/CN2020/131909 patent/WO2022041526A1/en active Application Filing
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1191024A (en) * | 1995-06-13 | 1998-08-19 | 北卡罗来纳康姆斯科普公司 | Coaxial drop cable having a mechanically and electrically continuous outer conductor and an associated communication system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022041526A1 (en) | 2022-03-03 |
| CN111897070A (en) | 2020-11-06 |
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Address after: 215500 Building 2, No.8, Tongda Road, Changshu Economic and Technological Development Zone, Suzhou City, Jiangsu Province Patentee after: Jiangsu Hengtong Huahai Technology Co.,Ltd. Country or region after: China Address before: 215500 Building 2, No.8, Tongda Road, Changshu Economic and Technological Development Zone, Suzhou City, Jiangsu Province Patentee before: JIANGSU HENGTONG MARINE CABLE SYSTEMS Co.,Ltd. Country or region before: China |