CN111679388A - Resistance to compression optical cable - Google Patents
Resistance to compression optical cable Download PDFInfo
- Publication number
- CN111679388A CN111679388A CN202010577885.7A CN202010577885A CN111679388A CN 111679388 A CN111679388 A CN 111679388A CN 202010577885 A CN202010577885 A CN 202010577885A CN 111679388 A CN111679388 A CN 111679388A
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- CN
- China
- Prior art keywords
- optical cable
- arc
- inner sheath
- filler
- compression
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- 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
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
-
- 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
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
- G02B6/4432—Protective covering with fibre reinforcements
-
- 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
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/44384—Means specially adapted for strengthening or protecting the cables the means comprising water blocking or hydrophobic materials
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Insulated Conductors (AREA)
Abstract
The invention belongs to the field of optical cables, and particularly relates to a compression-resistant optical cable. It includes: the cable core and the outer sheath; the cable core is formed by covering a plurality of optical fibers with a polygonal inner sheath; a compression-resistant sleeve is arranged between the inner sheath and the outer sheath and is formed by connecting a plurality of arc-shaped strips end to end along the circumferential direction, the number of the arc-shaped strips is equal to that of the edges of the inner sheath and is arranged correspondingly, the connecting part of the arc-shaped strips is inwards abutted against the corners of the inner sheath, and each section of the arc-shaped strips is outwards arched and is tangent to the inner side wall of the outer sheath; and reinforcing parts are arranged at the joint of every two adjacent arc-shaped strips of the compression sleeve along the axial circumferential direction. The optical cable has good structural stability; the material has good compression resistance; the specific gravity of the optical cable is moderate.
Description
Technical Field
The invention belongs to the field of optical cables, and particularly relates to a compression-resistant optical cable.
Background
Optical cables are very common functional cables for optical signal transmission, playing a very important role in modern society. The mainstream signal transmission means at present is carried out through an optical cable.
For optical cables, the pressure resistance is a very important property. At present, the mode of improving the pressure resistance of the optical cable is mostly to coat a plurality of layers of rigid or hard structural layers outside the optical fiber so as to prevent the optical fiber from being damaged due to pressure. However, the structure can cause the specific gravity of the optical cable to be greatly improved, and is not beneficial to the overhead arrangement of the optical cable.
Disclosure of Invention
The invention provides a compression-resistant optical cable, aiming at solving the problems that the compression resistance of the existing optical cable is limited, the specific gravity of the optical cable is greatly improved due to the existing mode for improving the compression resistance of the optical cable, the difficulty is high when the optical cable is arranged in an overhead mode, the optical cable is easy to droop and deform, and the like.
The invention aims to:
firstly, the compression resistance of the optical cable is improved through reasonable structural improvement;
secondly, the compression resistance of the optical cable is improved, and meanwhile, the specific gravity of the optical cable is prevented from being greatly increased;
and thirdly, ensuring that the optical cable has good structural stability.
In order to achieve the purpose, the invention adopts the following technical scheme.
A crush resistant optical cable comprising:
the cable core and the outer sheath;
the cable core is formed by covering a plurality of optical fibers with a polygonal inner sheath;
be equipped with the resistance to compression cover between inner sheath and the oversheath, the resistance to compression cover comprises a plurality of arcs along circumference end to end, and arc quantity equals and corresponds the setting with inner sheath limit number, and the angle butt of the inside and the inner sheath of department of meeting of arc, every section arc all outwards arches and is tangent with the inside wall of oversheath.
As a preference, the first and second liquid crystal compositions are,
and reinforcing parts are arranged at the joint of every two adjacent arc-shaped strips of the compression sleeve along the axial circumferential direction.
As a preference, the first and second liquid crystal compositions are,
the number of the edges of the inner jacket is 5-7.
As a preference, the first and second liquid crystal compositions are,
the side edge of the inner sheath is an arc-shaped edge which is arched outwards.
As a preference, the first and second liquid crystal compositions are,
and a first filler is filled between the compression sleeve and the outer sheath.
As a preference, the first and second liquid crystal compositions are,
the first filler is a flame retardant filler.
As a preference, the first and second liquid crystal compositions are,
and a second filler is filled between the compression resistant sleeve and the inner sheath.
As a preference, the first and second liquid crystal compositions are,
the second filler is a water-blocking filler.
As a preference, the first and second liquid crystal compositions are,
a third filler is filled in the gap in the inner sheath;
the third filler is a filling rope.
The invention has the beneficial effects that:
1) the structure stability is good;
2) the material has good compression resistance;
3) the specific gravity of the optical cable is moderate.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is another schematic structural view of the present invention;
in the figure: 100 cable cores, 101 optical fibers, 102 inner jacket, 200 compression sleeve, 300 reinforcing piece, 400 outer jacket, 401 arch-shaped bulge, 500 waterproof layer, 600 first filler, 700 second filler and 800 third filler.
The specific implementation mode is as follows:
the invention is described in further detail below with reference to specific embodiments and the attached drawing figures. Those skilled in the art will be able to implement the invention based on these teachings. Moreover, the embodiments of the present invention described in the following description are generally only some embodiments of the present invention, and not all embodiments. Therefore, all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., and "several" means one or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Unless otherwise specified, the raw materials used in the examples of the present invention are all commercially available or available to those skilled in the art; unless otherwise specified, the methods used in the examples of the present invention are all those known to those skilled in the art.
Examples
A crush resistant optical cable as shown in fig. 1, comprising:
a cable core 100 and an outer sheath 400;
the cable core 100 is formed by covering a plurality of optical fibers 101 by an inner sheath 102, a non-woven fabric wrapping tape is further arranged in the inner sheath 102 to wrap the plurality of optical fibers 101, and an outer sheath 400 is covered outside the cable core 100 to protect the cable core 100, so that the cable core 100 is prevented from being damaged due to external force;
the inner sheath 102 is of a polygonal structure, preferably, the number of sides is 5-7, and as shown in fig. 1, the embodiment is of a hexagonal structure; a compression-resistant sleeve 200 is further arranged between the inner sheath 102 and the outer sheath 400, the compression-resistant sleeve 200 is formed by connecting a plurality of arc-shaped strips end to end along the circumferential direction, the number of the arc-shaped strips is equal to that of the edges of the inner sheath 102, the arc-shaped strips are correspondingly arranged, the cross section of the compression-resistant sleeve is formed by connecting six identical arc-shaped strips end to end as shown in fig. 1, the connecting part of the two arc-shaped strips is inwards abutted against the corner of the inner sheath 102, and each arc-shaped strip is outwards arched and is tangent to the inner side wall of the;
the compression-resistant sleeve 200 can firstly realize the forming and shaping effects of the whole optical cable, so that the optical cable forms a complete structure and supports a whole framework, and is prepared from elastic materials such as silicon rubber and the like, so that the compression-resistant sleeve can also play a certain role in axial shaping and replacing traditional rigid reinforcements, ensures that the optical cable cannot be completely loosened and difficult to erect, has the capacity of reducing the internal effect of external force due to self deformation, can convert the external force into self elastic potential energy through deformation, prevents the optical cable from deforming and generates a certain effect of resisting the external force;
the reinforcing pieces 300 are arranged at the joint of every two adjacent arc-shaped strips of the compression-resistant sleeve 200 along the axial circumferential direction, the reinforcing pieces 300 are made of metal or other common materials, the axial shaping capacity of the optical cable can be further improved, the optical cable has stronger compression resistance and bending resistance, the straight laying of the optical cable is facilitated, the reinforcing pieces 300 are uniformly distributed in a hexagonal lattice mode on the cross section, the reinforcing pieces 300 have rigidity, the whole optical cable can be twisted and twisted only by simultaneously twisting and bending the six reinforcing pieces 300 when being subjected to twisting force, namely the optical cable is large in twisting difficulty and has good anti-twisting capacity, and meanwhile, when the optical cable is hung and hung in an empty mode, the hanging and empty hanging of the whole optical cable are more stable, and the problems of hanging, aging, drooping and the like of plastic materials are not easy to generate;
the optical cable with the structure has good pressure resistance, particularly radial pressure resistance;
when the radial pressure is applied, firstly, the outer sheath 400 is applied with force, the force applied to the outer sheath 400 is firstly transmitted to the pressure-resistant sleeve 200, the contact part of the pressure-resistant sleeve 200 and the outer sheath 400 is arranged in the middle of the arc-shaped strip, namely, the part arched outwards, when the external force is applied, the part arched firstly is compressed inwards, the end parts at the two ends of the arc-shaped strip directly applied with force are expanded along the circumferential direction, the adjacent arc-shaped strip is pushed by the expanded arc-shaped strip, the two ends are narrowed, the middle part is arched outwards, but the outer sheath 400 and the inner sheath 102 limit the outer sheath and the inner sheath and are difficult to arch, therefore, the opposite action is performed on the arc-shaped strip directly applied with force, the difficulty of the outward expansion at the two ends is increased, the deformation of the arc-shaped strip is limited, the deformation of the outer sheath 400 is further limited, the structural stability of the whole optical cable is higher, the deformation and the collapse caused by the external force is not easy to occur, and the like, the transmission between the arc-shaped strips is difficult, and the force of the reinforcing piece 300 also needs to be further overcome when the directly stressed arc-shaped strips deform or the external force is conducted to the inner sheath 102, so that a very excellent compression-resistant protection effect is generated;
further, the method comprises the following steps of;
the side edge of the inner sheath 102 is an arc-shaped edge which is arched outwards, and the arc-shaped edge enables the side edge part of the inner sheath 102 to be easy to generate outward arched deformation so as to absorb external force, thereby playing a role in deformation guiding and further preventing the inner sheath 102 from directly extruding the optical fiber 101 inwards;
meanwhile, the compression-resistant sleeve 200 is matched with the inner sheath 102, so that the main stress point of the inner sheath 102 is at the corner part, the corner part is folded after being stressed in the radial direction, and the side edge between two adjacent stressed corner parts is arched outwards, so that the internal space of the inner sheath 102 can be ensured not to be compressed as far as possible, the optical fiber 101 can slide to a certain degree, the extrusion to the optical fiber 101 can be effectively reduced, and the optical fiber 101 is protected well.
Further, the method comprises the following steps of;
a first filler 600 is filled between the compression sleeve 200 and the outer sheath 400;
the first filler 600 is mainly selected from flame-retardant fillers, and the embodiment selects the fireproof flame-retardant yarn as the filler, so that the friction force between the pressure-resistant sleeve 200 and the outer sheath 400 can be increased, the matching stability of the pressure-resistant sleeve and the outer sheath is improved, and the flame-retardant and fireproof effects can be achieved;
a second filler 700 is filled between the pressure-resistant sleeve 200 and the inner sheath 102;
the second filler 700 is mainly selected from water-blocking type fillers, and in the embodiment, the water-blocking paste is selected as the filler, has the water-blocking characteristic, can effectively prevent the optical cable from water entering, and can further resist the arch of the pressure sleeve 200 to form a support, so that the collapse problem caused by long-term stress in the processes of transportation, storage and use is reduced;
a gap in the inner sheath 102 is filled with a third filler 800;
the third filler 800 may be optical cable fillers such as conventional filling ropes, or fillers with certain functionality such as water-blocking yarns, water-blocking powder, flame-retardant yarns, and heat-dissipating paste may be selected to further realize the functionalization of the optical cable;
the outer surface of the outer sheath 400 is further coated with waterproof paint to form a waterproof layer 500, and the outer part of the reinforcing member 300 causes that the reinforcing member 300 is more easily affected by water vapor under the conditions of empty hanging, hanging and the like of the optical cable, so that the waterproof layer 500 is further arranged to prolong the service life of the optical cable.
Further, the method comprises the following steps of;
as shown in fig. 2, an arch protrusion 401 matched with the pressure-resistant sleeve 200 is arranged on the inner surface of the outer sheath 400, the arch protrusion 401 is made of common elastic materials such as silicon rubber and is arranged tangentially to the outer surface of the arc-shaped strip of the pressure-resistant sleeve 200;
the arch-shaped bulge 401 has small influence on the stress and force conduction of the original structure of the optical cable, and mainly still has stress on the arc-shaped strip of the pressure-resistant sleeve 200, but the arrangement of the arch-shaped bulge 401 can effectively fix the pressure-resistant sleeve 200, so that the problem that the pressure-resistant performance of the optical cable is reduced due to the deflection generated in the use process is avoided.
Claims (9)
1. A crush-resistant fiber optic cable, comprising:
the cable core and the outer sheath;
the cable core is formed by covering a plurality of optical fibers with a polygonal inner sheath;
be equipped with the resistance to compression cover between inner sheath and the oversheath, the resistance to compression cover comprises a plurality of arcs along circumference end to end, and arc quantity equals and corresponds the setting with inner sheath limit number, and the angle butt of the inside and the inner sheath of department of meeting of arc, every section arc all outwards arches and is tangent with the inside wall of oversheath.
2. The crush-resistant optical cable according to claim 1,
and reinforcing parts are arranged at the joint of every two adjacent arc-shaped strips of the compression sleeve along the axial circumferential direction.
3. The crush-resistant optical cable according to claim 1,
the number of the edges of the inner jacket is 5-7.
4. The crush-resistant optical cable according to claim 1 or 3,
the side edge of the inner sheath is an arc-shaped edge which is arched outwards.
5. The crush-resistant optical cable according to claim 1,
and a first filler is filled between the compression sleeve and the outer sheath.
6. The crush-resistant optical cable according to claim 5,
the first filler is a flame retardant filler.
7. The crush-resistant optical cable according to claim 1,
and a second filler is filled between the compression resistant sleeve and the inner sheath.
8. The crush-resistant optical cable according to claim 7,
the second filler is a water-blocking filler.
9. The crush-resistant optical cable according to claim 1,
a third filler is filled in the gap in the inner sheath;
the third filler is a filling rope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010577885.7A CN111679388A (en) | 2020-06-22 | 2020-06-22 | Resistance to compression optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010577885.7A CN111679388A (en) | 2020-06-22 | 2020-06-22 | Resistance to compression optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111679388A true CN111679388A (en) | 2020-09-18 |
Family
ID=72456207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010577885.7A Withdrawn CN111679388A (en) | 2020-06-22 | 2020-06-22 | Resistance to compression optical cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111679388A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112526686A (en) * | 2020-12-08 | 2021-03-19 | 杭州富通通信技术股份有限公司 | Optical cable |
| CN113296210A (en) * | 2021-06-04 | 2021-08-24 | 杭州富通通信技术股份有限公司 | Light optical cable |
| CN113311553A (en) * | 2021-07-01 | 2021-08-27 | 杭州富通通信技术股份有限公司 | Optical cable |
| CN113805294A (en) * | 2021-08-30 | 2021-12-17 | 富通集团（嘉善）通信技术有限公司 | Resistance to compression optical cable |
| CN114035289A (en) * | 2021-10-11 | 2022-02-11 | 杭州富通通信技术股份有限公司 | Compression-resistant and distortion-resistant optical cable |
| CN114460699A (en) * | 2021-12-27 | 2022-05-10 | 富通集团（嘉善）通信技术有限公司 | Anti-distortion optical cable |
| CN114460700A (en) * | 2022-01-11 | 2022-05-10 | 深圳新澳科电缆有限公司 | Heterogeneous impact-resistant optical cable |
| CN114594556A (en) * | 2022-01-14 | 2022-06-07 | 杭州富通通信技术股份有限公司 | Flame-retardant optical cable |
| CN115047574A (en) * | 2022-06-28 | 2022-09-13 | 富通集团有限公司 | Flat optical cable |
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| CN107086513A (en) * | 2017-06-14 | 2017-08-22 | 河北燎源电讯器材有限公司 | Can split multi-functional plum tube |
| CN208368245U (en) * | 2018-06-26 | 2019-01-11 | 江西联创电缆有限公司 | A kind of high fire-retardance power cable with cross-linked polyethylene insulation |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112526686A (en) * | 2020-12-08 | 2021-03-19 | 杭州富通通信技术股份有限公司 | Optical cable |
| CN113296210A (en) * | 2021-06-04 | 2021-08-24 | 杭州富通通信技术股份有限公司 | Light optical cable |
| CN113311553A (en) * | 2021-07-01 | 2021-08-27 | 杭州富通通信技术股份有限公司 | Optical cable |
| CN113805294A (en) * | 2021-08-30 | 2021-12-17 | 富通集团（嘉善）通信技术有限公司 | Resistance to compression optical cable |
| CN114035289A (en) * | 2021-10-11 | 2022-02-11 | 杭州富通通信技术股份有限公司 | Compression-resistant and distortion-resistant optical cable |
| CN114035289B (en) * | 2021-10-11 | 2023-12-15 | 杭州富通通信技术股份有限公司 | Compression-resistant and torsion-resistant optical cable |
| CN114460699A (en) * | 2021-12-27 | 2022-05-10 | 富通集团（嘉善）通信技术有限公司 | Anti-distortion optical cable |
| CN114460699B (en) * | 2021-12-27 | 2024-02-20 | 富通集团（嘉善）通信技术有限公司 | Anti-twisting optical cable |
| CN114460700A (en) * | 2022-01-11 | 2022-05-10 | 深圳新澳科电缆有限公司 | Heterogeneous impact-resistant optical cable |
| CN114594556A (en) * | 2022-01-14 | 2022-06-07 | 杭州富通通信技术股份有限公司 | Flame-retardant optical cable |
| CN115047574A (en) * | 2022-06-28 | 2022-09-13 | 富通集团有限公司 | Flat optical cable |
| CN115047574B (en) * | 2022-06-28 | 2023-05-12 | 富通集团有限公司 | Flat optical cable |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200918 |
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| WW01 | Invention patent application withdrawn after publication |