CN117192713A - Underwater optical cable - Google Patents
Underwater optical cable Download PDFInfo
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- CN117192713A CN117192713A CN202311474969.8A CN202311474969A CN117192713A CN 117192713 A CN117192713 A CN 117192713A CN 202311474969 A CN202311474969 A CN 202311474969A CN 117192713 A CN117192713 A CN 117192713A
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- optical cable
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- gap
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- 230000003287 optical effect Effects 0.000 title claims abstract description 51
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 17
- 239000010935 stainless steel Substances 0.000 claims abstract description 17
- 239000013307 optical fiber Substances 0.000 claims abstract description 8
- 239000010426 asphalt Substances 0.000 claims abstract description 6
- 239000000835 fiber Substances 0.000 claims abstract description 6
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000011800 void material Substances 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 4
- 238000001035 drying Methods 0.000 description 11
- 230000003014 reinforcing effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000004677 Nylon Substances 0.000 description 4
- 229920001778 nylon Polymers 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 241000238631 Hexapoda Species 0.000 description 2
- 241000257303 Hymenoptera Species 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Light Guides In General And Applications Therefor (AREA)
Abstract
The invention relates to the technical field of optical cables, and provides an underwater optical cable, which comprises: the optical fiber unit comprises an optical fiber and an oiling loose tube; the outer side of the optical fiber unit is sequentially coated with a stainless steel pipe layer, a flat sheath, a framework, a middle sheath layer, an asphalt waterproof layer and an outer sheath layer, and fiber paste is injected into the stainless steel pipe layer; the skeleton includes central circular frame, and a plurality of support frames that evenly set up in the outside of circular frame, and the support frame cross-section is class T type, the support frame include with the connecting portion that the circular frame is connected and with connecting portion integrated into one piece be curved circular arc frame, have the clearance between circular arc frame and the circular frame, place the anti layering in the clearance. The stainless steel tube layer improves tensile property, and the multilayer sheath makes the optical cable water-proof effects showing, support frame and anti layering, supports certain space and cushion the pressure that the middle sheath layer received. The invention solves the technical problems of pressure resistance and water resistance of the underwater optical cable by the combined action of the stainless steel tube, the sheaths and the framework.
Description
Technical Field
The invention relates to the technical field of optical cables, in particular to an underwater optical cable.
Background
The underwater optical cable is generally arranged at a deeper position under water, because the water pressure is large, and the flow direction of the underwater water flow is complex, after a period of use, the underwater optical cable can be cracked or even broken due to the fact that the underwater optical cable cannot bear the high-strength water pressure, so that the water enters the optical cable, the underwater optical cable is damaged, the communication transmission is affected, and huge economic loss is caused. There is a need for a pressure-resistant and water-resistant submarine optical cable that addresses the above-described problems.
Disclosure of Invention
The invention aims to provide an underwater optical cable, which solves the technical problems of pressure resistance and water resistance of the underwater optical cable in the prior art.
The embodiment of the invention provides an underwater optical cable, which comprises: the cable core comprises an optical fiber and an oiling loose tube; the outer side of the cable core is sequentially coated with a stainless steel pipe layer, a flat sheath, a framework, a middle sheath layer, an asphalt waterproof layer and an outer sheath layer, and fiber paste is injected into the stainless steel pipe layer; the framework comprises a central circular frame and a plurality of supporting frames uniformly arranged on the outer side of the circular frame, the cross section of each supporting frame is of a T-shaped structure, each supporting frame comprises a connecting part connected with the circular frame and an arc-shaped arc frame integrally formed with the connecting part, a gap is reserved between the arc frame and the circular frame, and an anti-pressing strip is arranged in the gap.
Further, the circular arc frame and the circular frame are concentric circles.
Further, a gap is formed between two adjacent arc frames, and a gap is formed between two sides of the compression-resistant strip and the connecting portion.
Further, the optical cable further comprises a drying strip, the supporting frame further comprises a protruding portion protruding out of the circular arc frame, the protruding portion contacts the middle sheath layer, and the drying strip is located in a gap between the circular arc frame and the middle sheath layer.
Further, gaps are formed between two sides of the drying strip and the protruding portions respectively.
Further, steel strands are arranged at the crossing positions of the arc frame, the protruding parts and the connecting parts.
Further, the optical cable further comprises an elastic strip, and the elastic strip is filled in a gap between the flat sheath and the circular frame.
Further, the optical cable further comprises an elastic hose, and the elastic hose is filled in a gap among the elastic strip, the flat sheath and the circular frame.
Further, the elastic strip comprises an arc-shaped structure or a polygonal structure.
Further, two reinforcing pieces are embedded in the flat sheath, and the two reinforcing pieces are respectively positioned at two sides of the cable core and are parallel to the cable core.
The embodiment of the invention has at least the following technical effects:
the cable core of the underwater optical cable provided by the embodiment of the invention is of a flat structure design, the outer side of the cable core is provided with the stainless steel tube, the tube comprises optical fibers and fiber paste, and the stainless steel tube has high pressure resistance. The flat sheath is a framework outside, and provides certain compression resistance when the optical cable is compressed. The outer asphalt waterproof layer of the middle sheath layer is a PE sheath, the outer sheath layer at the outermost side is a PE+nylon co-extrusion sheath, and the nylon layer can protect the optical cable from being corroded and damaged by insects and ants, so that the waterproof effect is remarkable. The cross section of the support frame of skeleton is T-shaped, so when the pressure extrusion optical cable under water, the support frame supports certain space, and the pressure that the jacket layer received in the buffering still places the anti layering in the clearance between circular arc frame and circular frame, can produce certain deformation when the skeleton is pressed and provide the compressive resistance, protects the cable core of inside. The pressure-resistant waterproof structure realizes the pressure-resistant waterproof of the underwater optical cable through the combined action of the stainless steel tube, the sheaths, the frameworks and the pressure-resistant strips.
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 cross-sectional view of a first embodiment of an underwater optical cable provided in an embodiment of the present invention;
FIG. 2 is a schematic diagram of a skeleton of an underwater optical cable according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of a second embodiment of an underwater optical cable according to an embodiment of the present invention.
Icon: 1-a cable core; 2-stainless steel tube layers; 3-a flat sheath; 4-skeleton; 5-a middle sheath layer; 6-asphalt water-blocking layer; 7-an outer sheath layer; 20-fiber paste; 31-a stiffener; 41-a circular frame; 42-supporting frames; 43-steel strand; 81-an elastic strip; 82-an elastic hose; 401-anti-press bar; 402-drying strips; 421-arc rack; 422-a boss; 423-connection.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. 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.
It will be understood by those skilled in the art that all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs unless defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless expressly stated otherwise, as understood by those skilled in the art. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The term "and/or" as used herein includes all or any element and all combination of one or more of the associated listed items.
Referring to fig. 1 and 2, an embodiment of the present invention provides an underwater optical cable, including: the cable comprises a cable core 1, wherein the cable core 1 comprises an optical fiber and an oiling loose tube; the cable core 1 outside cladding stainless steel pipe layer 2, flat sheath 3, skeleton 4, well restrictive coating 5, pitch water-blocking layer 6 and oversheath layer 7 in proper order, pour into fine cream 20 in the stainless steel pipe layer 2 into, skeleton 4 includes central circular frame 41, and a plurality of support frames 42 that evenly set up in the outside of circular frame 41, the cross-section of support frame 42 is class T type, support frame 42 includes connecting portion 423 that is connected with circular frame 41 and with connecting portion 423 integrated into one piece be curved circular arc frame 421, there is the clearance between circular arc frame 421 and the circular frame 41, place pressure-resistant strip 401 in the clearance.
In the embodiment, the cable core of the underwater optical cable is of a flat structure design, the outer side of the cable core 1 is provided with a stainless steel tube, optical fibers and fiber paste in the tube, and the stainless steel tube has high pressure resistance. Outside the flat sheath 3 is a framework 4, which provides a certain compression resistance when the optical cable is compressed. The outer asphalt waterproof layer 6 of the middle sheath layer 5, the middle sheath layer 5 is a PE sheath, the outermost outer sheath layer 7 is a PE and nylon co-extrusion sheath, and the nylon layer can protect the optical cable from being corroded and damaged by insects and ants and has remarkable waterproof effect. The cross section of the support frame 42 of the framework 4 is T-shaped, so when the underwater pressure extrudes the optical cable, the support frame 42 supports a certain space to buffer the pressure born by the middle sheath layer 5, the anti-pressing strip 401 is also arranged in the gap between the circular arc frame 421 and the circular frame 41, and certain deformation can be generated to provide anti-pressure when the framework 4 is pressed, so that the cable core inside is protected. Preferably, 4 support frames 42 are provided, and 3, 5, 6 or more support frames can be uniformly provided as required. The pressure-resistant waterproof structure realizes the pressure-resistant waterproof of the underwater optical cable through the combined action of the stainless steel tube, the sheaths, the frameworks and the pressure-resistant strips.
Alternatively, the circular arc frame 421 is concentric with the circular frame 41. In this embodiment, the arc frame 421 has a large contact area with the outside, and the arc is concentric with the circular frame 41 on the inside, so that the stress is more uniform.
Optionally, a gap is formed between two adjacent arc frames 421, and a gap is formed between two sides of the compression-resistant strip 401 and the connecting portion. In this embodiment, the gaps between the circular arc frames 421 and the gaps between the two sides of the compression-resistant bar 401 and the connecting portions 423 are all designed to reserve the deformation space of the skeleton 4 when the optical cable is compressed.
Optionally, the underwater optical cable further includes a drying bar 402, the supporting frame 42 further includes a protrusion 422, the protrusion 422 protrudes from the circular arc frame 421, the protrusion 422 contacts the middle sheath layer 5, and the drying bar 402 is located in a gap between the circular arc frame 421 and the middle sheath layer 5. In this embodiment, the middle sheath layer 5 is outside the framework 4, the convex portion 422 makes a gap between the arc frame 421 and the middle sheath layer 5, the drying strip 402 is disposed in the gap, the drying strip 402 can absorb the water vapor permeated into the framework, and the shape of the drying strip is adapted to the gap formed by the support frame 42 and the middle sheath layer 5. Preferably, the protruding portion 422 is an arc structure, the contact area between the arc structure 422 and the middle sheath layer 5 is larger, and the possibility of breakage of the middle sheath layer 5 when being under pressure is reduced.
Optionally, there may be a gap between the two sides of the dryer bar 402 and the bosses 422, respectively. In this embodiment, a gap is reserved between the drying bar 402 and the protruding portion 422, so as to provide a space for deformation of the drying bar 402 due to water absorption.
Optionally, the steel strand 43 is disposed at a position where the arc frame 421 crosses the protruding portion 422 and the connecting portion 423. In this embodiment, when there are four supporting frames 42, namely, four steel strands are placed at four corners of the skeleton, sufficient tension is provided for the whole optical cable.
Optionally, the submarine optical cable further comprises an elastic strip 81, the elastic strip 81 filling the gap between the flat sheath 3 and the circular frame 41. In this embodiment, two pieces of elastomer are placed between the circular frame 41 and the flat sheath 3, providing a certain compression resistance when the cable is compressed.
Optionally, the submarine optical cable further comprises an elastic hose 82, the elastic hose 82 filling the gap between the elastic strip 81, the flat sheath 3 and the circular frame 41. In this embodiment, 4 elastic hoses 82 are placed between the circular frame 41, the flat sheath 3 and the two elastic bodies, increasing the compression resistance of the cable.
Alternatively, the elastic strip 81 comprises an arcuate structure or a polygonal structure. In this embodiment, referring to fig. 1 and 3, the elastic strip 81 has an arc structure with a larger stress area, and a polygonal structure with more stress points, so as to reduce or disperse the external pressure.
Optionally, two reinforcing members 31 are embedded in the flat sheath 3, and the two reinforcing members 31 are respectively located at two sides of the cable core 1 and are parallel to the cable core 1. In this embodiment, two parallel reinforcing members 31 are embedded in the flat sheath 3, the reinforcing members 31 can be made of materials with higher strength such as steel wires and FRP, the tensile property of the cable core is guaranteed, and the cable core independent compression-resistant structure can guarantee the operation of the optical cable when the optical cable is damaged.
Those of skill in the art will appreciate that the various operations, methods, steps in the flow, acts, schemes, and alternatives discussed in the present invention may be alternated, altered, combined, or eliminated. Further, other steps, means, or steps in a process having various operations, methods, or procedures discussed herein may be alternated, altered, rearranged, disassembled, combined, or eliminated. Further, steps, measures, schemes in the prior art with various operations, methods, flows disclosed in the present invention may also be alternated, altered, rearranged, decomposed, combined, or deleted.
In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meanings of the above terms in the present invention can be understood in specific situations by those of ordinary skill in the art.
In the description of the present specification, a particular feature, structure, material, or characteristic may be combined in any suitable manner in one or more embodiments or examples.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (10)
1. An underwater optical cable, comprising:
the cable core comprises an optical fiber and an oiling loose tube;
the outer side of the cable core is sequentially coated with a stainless steel pipe layer, a flat sheath, a framework, a middle sheath layer, an asphalt waterproof layer and an outer sheath layer, and fiber paste is injected into the stainless steel pipe layer;
the framework comprises a central circular frame and a plurality of supporting frames uniformly arranged on the outer side of the circular frame, the cross section of each supporting frame is of a T-shaped structure, each supporting frame comprises a connecting part connected with the circular frame and an arc-shaped arc frame integrally formed with the connecting part, a gap is reserved between the arc frame and the circular frame, and an anti-pressing strip is arranged in the gap.
2. The submarine optical cable according to claim 1, wherein the circular arc rack is concentric with the circular rack.
3. An underwater optical cable as in claim 1 wherein there is a gap between two adjacent circular arc frames and a gap between each side of the compression-resistant strip and the connection.
4. The submarine optical cable according to claim 1, further comprising a dry strip, wherein the support rack further comprises a boss protruding from the circular arc rack, wherein the boss contacts the middle jacket layer, and wherein the dry strip is located in a gap between the circular arc rack and the middle jacket layer.
5. The submarine optical cable according to claim 4, wherein a gap exists between each of two sides of the dry strip and the boss.
6. The submarine optical cable according to claim 4, wherein steel strands are arranged at the positions where the circular arc frames cross the protruding parts and the connecting parts.
7. The submarine optical cable according to claim 1, further comprising an elastic strip filling the void between the flat jacket and the circular shelf.
8. The submarine optical cable according to claim 7, further comprising an elastic hose filling the void between the elastic strip, the flat jacket and the circular shelf.
9. The submarine optical cable according to claim 7, wherein the elastic bars comprise an arcuate structure or a polygonal structure.
10. An underwater optical cable as in claim 1 wherein two strength members are embedded in the flat sheath, the two strength members being located on either side of the cable core and parallel to the cable core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311474969.8A CN117192713B (en) | 2023-11-08 | 2023-11-08 | Underwater optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311474969.8A CN117192713B (en) | 2023-11-08 | 2023-11-08 | Underwater optical cable |
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| Publication Number | Publication Date |
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| CN117192713A true CN117192713A (en) | 2023-12-08 |
| CN117192713B CN117192713B (en) | 2024-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311474969.8A Active CN117192713B (en) | 2023-11-08 | 2023-11-08 | Underwater optical cable |
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| CN216526432U (en) * | 2021-12-27 | 2022-05-13 | 江苏亨通光电股份有限公司 | Side pressure resistant optical cable |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN117192713B (en) | 2024-02-02 |
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