CN116009159A - Dynamic submarine optical cable - Google Patents
Dynamic submarine optical cable Download PDFInfo
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- CN116009159A CN116009159A CN202111230251.5A CN202111230251A CN116009159A CN 116009159 A CN116009159 A CN 116009159A CN 202111230251 A CN202111230251 A CN 202111230251A CN 116009159 A CN116009159 A CN 116009159A
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- armor
- layer
- optical cable
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- submarine optical
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
The invention relates to the technical field of optical cables, in particular to a dynamic submarine optical cable, which comprises: the core body, at least three armor layers and an outer protective layer are sleeved in sequence from inside to outside; each armor comprises at least one armor structure, a separation layer is arranged between every two adjacent armor layers, and the twisting directions of the two adjacent armor layers are opposite. The invention provides a dynamic submarine optical cable which has longer service life and better stability in seawater.
Description
Technical Field
The invention relates to the technical field of optical cables, in particular to a dynamic submarine optical cable.
Background
The conventional submarine optical cable is mainly applied between continents, between continents and islands, between islands and islands, and between coastal cities. The submarine optical cable is generally used statically, and is constructed in a burying mode during construction, namely, the submarine optical cable is directly buried on the seabed, so that the influence of ocean currents on the submarine optical cable in the long-term use process is avoided. With the development of ocean resources, the application of deep-open sea floating platforms is more and more, but the sea floating platforms generally adopt satellite communication, because the conventional static submarine optical cable cannot bear dynamic fatigue caused by external forces such as ocean currents, waves and the like, the submarine optical cable is invalid, optical fibers are broken, and the communication of the offshore platform is affected.
The dynamic optical cable is developed to meet the requirements, but the existing dynamic submarine optical cable is generally double-layer steel wire armored, the weight in sea water is generally not more than 2.5kg/m, the stability in sea water is poor due to the small cable weight, the dynamic fatigue resistance of long-term working is poor, the service life is generally 3 years, the service life is far less than 25 years of the service life of the static submarine optical cable, the dynamic submarine optical cable needs to be replaced frequently in the service period of the system, and the operation is inconvenient.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects of shorter service life and poorer stability in seawater of the dynamic optical cable in the prior art, thereby providing the dynamic submarine optical cable with longer service life and better stability in seawater.
In order to solve the above technical problems, the present invention provides a dynamic submarine optical cable, including:
the core body, at least three armor layers and an outer protective layer are sleeved in sequence from inside to outside;
each armor comprises at least one armor structure, a separation layer is arranged between every two adjacent armor layers, and the twisting directions of the two adjacent armor layers are opposite.
Optionally, the layers of the armor structures of the adjacent two armor layers are different, and the layers of the armor structures of the two armor layers arranged at intervals are the same.
Optionally, the diameter of the armor structures of the inner armor is smaller than the diameter of the armor structures of the outer armor adjacently disposed.
Optionally, the ratio of the strand length of each of the armor layers along the axial direction of the optical cable to the strand length along the radial direction is 5-25, and the ratio is sequentially reduced from inside to outside.
Optionally, the ratio of the sum of the torsion parameters of two armor layers arranged at intervals to the sum of the torsion parameters of the armor layers of the outer layer arranged adjacently is 0.95-1.05.
Optionally, a filling material is arranged in the armor gap.
Optionally, the core body comprises a reinforcement member, and an optical fiber metal tube and a filling tube stranded at the periphery of the reinforcement member, wherein the optical fiber metal tube and the filling tube are arranged at intervals along the periphery of the reinforcement member.
Optionally, the ratio of the strand length of the optical fiber metal tube and the filler tube in the axial direction of the optical cable to the strand length in the radial direction is 5 to 25.
Optionally, the diameter of the filling tube is not smaller than the diameter of the fiber optic metal tube.
Optionally, the peripheries of the optical fiber metal tube and the filling tube are sequentially provided with a second wrapping layer and a plurality of protective layers, the second wrapping layer is filled with water blocking materials, and a reinforcing layer is arranged between two adjacent protective layers.
The technical scheme of the invention has the following advantages:
1. the dynamic submarine optical cable provided by the invention comprises a core body, at least three armor layers and an outer protective layer which are sequentially sleeved from inside to outside, wherein the dead weight of the optical cable is increased by the at least three armor layers, the stability of the optical cable in seawater is improved, and the dynamic submarine optical cable can bear dynamic fatigue caused by external forces such as ocean currents, waves and the like in a dynamic use process; and the stranding directions of the adjacent two armor layers are opposite, so that the optical cable can keep dynamic balance on the sea floor, and meanwhile, the separation layer is arranged between the adjacent two armor layers, so that mutual abrasion between the adjacent armor layers with opposite stranding directions in a dynamic use process is avoided, and the service life is prolonged.
2. According to the dynamic submarine optical cable provided by the invention, the ratio of the twisting length of each armor layer along the axial direction of the optical cable to the twisting length along the radial direction of the optical cable is 5-25, and the ratio is sequentially reduced from inside to outside, so that the outer armor layer locks the inner armor layer, and the structural stability of the optical cable is improved.
3. According to the dynamic submarine optical cable provided by the invention, the ratio of the sum of the torsion parameters of the two armor layers arranged at intervals to the sum of the torsion parameters of the armor layers of the outer layers arranged adjacently is 0.95-1.05, so that the dynamic submarine optical cable is ensured not to twist in the use process, and the service life is further prolonged.
3. According to the dynamic submarine optical cable provided by the invention, the filling material is arranged in the gap of the armor layers, so that the mutual abrasion between the armor layers in the dynamic use process of the optical cable is reduced.
5. According to the dynamic submarine optical cable, the optical fiber metal pipes and the filling pipes are arranged at intervals on the periphery of the reinforcing piece, so that mutual abrasion among the optical fiber metal pipes is prevented.
6. The diameter of the filling pipe of the dynamic submarine optical cable is not smaller than that of the optical fiber metal pipe, so that the optical fiber metal pipe is prevented from being stressed and invalid when being subjected to radial forces such as impact, flattening and the like.
7. The dynamic submarine optical cable provided by the invention is characterized in that the peripheries of an optical fiber metal tube and a filling tube are sequentially provided with a wrapping layer and a plurality of protective layers, the wrapping layer is filled with water-blocking materials, and a reinforcing layer is arranged between two adjacent protective layers. The waterproof performance of the optical cable is improved and the service life is prolonged due to the arrangement of the waterproof material; the mechanical property of the protective layer is enhanced by the arrangement of the reinforcing layer, and the fatigue resistance is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of a dynamic undersea optical fiber cable provided by the present invention;
FIG. 2 is an enlarged schematic view of the core shown in FIG. 1;
fig. 3 is a schematic view of another embodiment of a dynamic submarine cable provided by the present invention.
Reference numerals illustrate:
1. a core; 2. a first armor layer; 3. a first separation layer; 4. a second armor layer; 5. a second separation layer; 6. a third armor layer; 7. a third separation layer; 8. a fourth armor layer; 9. a first cladding layer; 10. an outer protective layer; 11. a reinforcing member; 12. an optical fiber metal tube; 13. a filling tube; 14. a second cladding layer; 15. a protective layer; 16. a first protective layer; 17. a reinforcing layer; 18. and a second protective layer.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
One embodiment of the dynamic submarine optical cable shown in fig. 1 and 2 comprises a core 1, a first armor layer 2, a first separation layer 3, a second armor layer 4, a second separation layer 5, a third armor layer 6, a third separation layer 7, a fourth armor layer 8, a first wrapping layer 9 and an outer protective layer 10 which are sleeved in sequence from inside to outside.
The core body 1 comprises a reinforcing piece 11 arranged in the center, an optical fiber metal tube 12 stranded on the periphery of the reinforcing piece 11, a filling tube 13, a second wrapping layer 14 and a plurality of protective layers 15 which are sequentially arranged from inside to outside.
The reinforcement 11 is made of plastic steel wire or non-metal reinforcement (FRP) and other materials. The optical fiber metal tube 12 consists of optical fibers, fiber paste and stainless steel tubes, and the excess length of the optical fibers is 1.5-6 per mill before the optical fiber metal tube 12 is twisted; the filling pipe 13 is made of plastic steel wire or non-metal reinforced wire (FRP) and other materials, the filling pipe 13 can be distinguished by adopting different color areas or surface marks, and the diameter of the filling pipe 13 is not smaller than the diameter of the optical fiber metal pipe 12; the optical fiber metal tube 12 and the filling tube 13 are stranded on the surface of the reinforcing member 11, and are arranged at intervals along the periphery of the reinforcing member 11 during stranding, and the ratio of the stranded length of the optical fiber metal tube 12 and the filling tube 13 along the axial direction of the optical cable to the stranded length along the radial direction is 5-25. All gaps of the second wrapping layer 14 are filled with water-blocking materials, and the hot-filling water-blocking materials are adopted. The multilayer protective layer 15 comprises a first protective layer 16, a reinforcing layer 17 and a second protective layer 18 which are sequentially arranged from inside to outside, the materials of the first protective layer 16 and the second protective layer 18 are the same, polyurethane, polyethylene or polypropylene can be adopted for extrusion to form the multilayer protective layer, the nominal thickness of the first protective layer 16 and the second protective layer 18 is not less than 1.5mm, the reinforcing layer is formed outside the first protective layer 16 in a braiding mode, and steel wires or nonmetal reinforcing wires can be adopted as braiding materials.
The first armor layer 2 and the third armor layer 6 each comprise a two-layer armor structure, the second armor layer 4 and the fourth armor layer 8 each comprise a one-layer armor structure, the twisting directions of the first armor layer 2 and the third armor layer 6 are the same, for example, the twisting directions of the second armor layer 4 and the fourth armor layer 8 are the same, for example, the twisting directions of the first armor layer 2 and the third armor layer 6 are the same, for example, the twisting directions of the second armor layer 4 and the fourth armor layer 8 are opposite, namely, the twisting directions of the adjacent two armor layers are opposite. Further, the diameters of the first armor layer 2 and the third armor layer 6 are the same, the diameters of the second armor layer 4 and the fourth armor layer 8 are the same, and the diameters of the first armor layer 2 and the third armor layer 6 are smaller than the diameters of the second armor layer 4 and the fourth armor layer 8. The ratio of the strand length of each of said armour layers in the axial direction of the cable to the strand length in the radial direction is 5-25, i.e. the ratio gradually decreases from the first armour layer 2 to the fourth armour layer 8. And the ratio of the sum of the torsion parameters of the first armor layer 2 and the third armor layer 6 to the sum of the torsion parameters of the second armor layer 4 and the fourth armor layer 8 is 0.95-1.05.
In the production process of the armor layers, armor in a layered armor mode is adopted, each armor layer is required to be prestretched to stabilize the state of the armored layer, the prestretched tension is 20% -80% of the armored strength, and the prestretching time is not less than 10min; and filling materials are arranged in the gaps of the armor layers, and special friction-reducing grease is adopted as the filling materials.
The first separation layer 3, the second separation layer 5 and the third separation layer 7 are all formed by adopting non-metal wrapping belts such as polyester woven belts, cotton tapes and the like, the non-metal wrapping belts are formed by adopting lap joint wrapping, and the wrapping lap ratio is not less than 10%.
The first wrapping layer 9 is formed by overlapping and wrapping non-metal wrapping belts such as polyester woven belts and cotton tapes, and the wrapping overlapping rate is not less than 15% and is used for avoiding overflow of filling materials in gaps of the armor layers.
The outer protective layer 10 is extruded on the surface of the first wrapping layer, and is extruded by ultraviolet aging resistant polyethylene or polyurethane material.
The dynamic submarine optical cable provided by the embodiment can be applied to the construction of a submarine communication system, in particular to a submarine optical cable of a landing section of an offshore platform, so that the structural design of the dynamic submarine optical cable is realized, and the submarine optical cable can be dynamically used; the cable has good stability in seawater, can bear dynamic fatigue caused by external forces such as ocean currents, waves and the like in long-term work, and realizes long-term dynamic use of the submarine optical cable.
As an alternative embodiment, as shown in fig. 3, the number of armor structures of two adjacent armor layers may be the same, for example, one layer; the diameter of the armor structure of the inner armor layer is larger than that of the armor structure of the outer armor layer adjacently arranged; a plurality of filling tubes, for example three, may be arranged between two adjacent fiber optic metal tubes.
Alternatively, a separation layer may be provided between adjacent equidirectional armour structures, for example between two armour structures of the first armour layer and the third armour layer.
Alternatively, the filling pipe can be an insulated wire core formed by a copper conductor and an insulating layer, so that the power supply function of the dynamic submarine optical cable is improved.
Alternatively, a copper tube may be used as the stainless steel tube in the fiber metal tube.
Alternatively, the separator layer may be longitudinally wrapped instead of wrapped.
Alternatively, the armor layer is pre-stretched integrally after production.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (10)
1. A dynamic submarine cable, comprising:
a core body (1), at least three armor layers and an outer protective layer (10) are sleeved in sequence from inside to outside;
each armor comprises at least one armor structure, a separation layer is arranged between every two adjacent armor layers, and the twisting directions of the two adjacent armor layers are opposite.
2. The dynamic submarine optical cable according to claim 1, wherein the armor structures of two adjacent armor layers have different numbers of armor structures, and wherein the armor structures of two spaced armor layers have the same number of armor structures.
3. The dynamic submarine optical cable according to claim 2, wherein the diameter of the armor structures of the inner armor layer is smaller than the diameter of the armor structures of the outer armor layer disposed adjacently.
4. A dynamic submarine optical cable according to any one of claims 1 to 3, wherein the ratio of the twist length of each of the armour layers in the axial direction of the cable to the twist length in the radial direction is from 5 to 25 and the ratio decreases in sequence from the inside to the outside.
5. The dynamic submarine optical cable according to any one of claims 1 to 4, wherein the ratio of the sum of the torsional parameters of two armor layers disposed at intervals to the sum of the torsional parameters of armor layers of an adjacent outer layer is 0.95-1.05.
6. The dynamic submarine optical cable according to any one of claims 1 to 5, wherein filler material is provided within the armor gap.
7. A dynamic submarine optical cable according to any one of claims 1-6, wherein the core comprises a strength member (11) and an optical fiber metal tube (12) and a filler tube (13) stranded around the periphery of the strength member (11), the optical fiber metal tube (12) and filler tube (13) being spaced along the periphery of the strength member (11).
8. A dynamic submarine optical cable according to claim 7, wherein the ratio of the lay length of the fiber metal tube (12) and the filler tube (13) in the axial direction of the cable to the lay length in the radial direction is 5-25.
9. A dynamic submarine optical cable according to claim 8, wherein the diameter of the filler tube (13) is not smaller than the diameter of the fiber optic metal tube (12).
10. Dynamic submarine optical cable according to any one of claims 7-9, wherein a second wrapping layer (14) and a plurality of protective layers (15) are further arranged on the peripheries of the optical fiber metal tube (12) and the filling tube (13) in sequence, the second wrapping layer is filled with water-blocking materials, and a reinforcing layer (17) is arranged between two adjacent protective layers (15).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111230251.5A CN116009159A (en) | 2021-10-21 | 2021-10-21 | Dynamic submarine optical cable |
| PCT/CN2021/130092 WO2023065426A1 (en) | 2021-10-21 | 2021-11-11 | Dynamic submarine optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111230251.5A CN116009159A (en) | 2021-10-21 | 2021-10-21 | Dynamic submarine optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116009159A true CN116009159A (en) | 2023-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111230251.5A Pending CN116009159A (en) | 2021-10-21 | 2021-10-21 | Dynamic submarine optical cable |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN116009159A (en) |
| WO (1) | WO2023065426A1 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4190648B2 (en) * | 1999-03-31 | 2008-12-03 | 沖縄電力株式会社 | Double armored submarine cable and its installation method |
| CN201184918Y (en) * | 2007-10-25 | 2009-01-21 | 通光集团有限公司 | Multilayer external metal-shielding seabed optical cable |
| CN205911038U (en) * | 2016-08-08 | 2017-01-25 | 中天科技海缆有限公司 | Deep water developments hose umbilical cable |
| CN107179586B (en) * | 2017-06-08 | 2024-02-20 | 江苏亨通华海科技股份有限公司 | Large-core-number feed submarine optical cable |
| CN109754935A (en) * | 2019-03-27 | 2019-05-14 | 湖南科技大学 | The multi-functional armouring umbilical cables of underwater kit |
-
2021
- 2021-10-21 CN CN202111230251.5A patent/CN116009159A/en active Pending
- 2021-11-11 WO PCT/CN2021/130092 patent/WO2023065426A1/en active Application Filing
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| Publication number | Publication date |
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| WO2023065426A1 (en) | 2023-04-27 |
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