CN112433313A - Pressure-resistant multi-core optical cable - Google Patents
Pressure-resistant multi-core optical cable Download PDFInfo
- Publication number
- CN112433313A CN112433313A CN202011378095.2A CN202011378095A CN112433313A CN 112433313 A CN112433313 A CN 112433313A CN 202011378095 A CN202011378095 A CN 202011378095A CN 112433313 A CN112433313 A CN 112433313A
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- optical cable
- sheath
- inner sheath
- cavity
- arc
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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
- G02B6/441—Optical cables built up from sub-bundles
-
- 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
- G02B6/4436—Heat resistant
-
- 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)
- Communication Cables (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The invention belongs to the field of optical cables, and particularly relates to a pressure-resistant multi-core optical cable. It includes: an outer sheath, an inner sheath and an optical fiber; the inner sheath is provided with an inner sheath cavity along the axial direction of the optical cable, the optical fiber is arranged in the inner sheath cavity along the axial direction of the optical cable, the outer sheath is provided with an outer sheath cavity along the axial direction of the optical cable, and the inner sheath is arranged in the outer sheath cavity; the radial section of the outer sleeve cavity is a regular polygon, and the number of the sides is odd; each inner edge angle of the outer sleeve cavity is correspondingly provided with an arc tube, the radial section of each arc tube is arc-shaped, and the two arc ends of each arc tube are fixedly connected with the side walls of the two sides of the corresponding edge angle of each arc tube; the outer surface of the inner sheath is also sleeved with a special-shaped elastic beam tube which is formed by alternately arranging convex parts and concave parts, the number of the convex parts is the same as the number of the inner edges and corners of the outer sheath cavity, the convex parts are opposite one by one, the middle parts of the convex parts are externally tangent to the arc tubes, and the convex parts are tangent to the outer wall of the inner sheath. The invention can realize the light weight of the optical cable and simultaneously obviously improve the compression resistance of the optical cable; the cable has a large space inside for arranging optical fibers.
Description
Technical Field
The invention belongs to the field of optical cables, and particularly relates to a pressure-resistant multi-core optical cable.
Background
Optical fiber cables (optical fiber cables) are manufactured to meet optical, mechanical, or environmental performance specifications and are telecommunication cable assemblies that utilize one or more optical fibers disposed in a surrounding jacket as the transmission medium and that may be used individually or in groups.
The multi-core optical cable is one optical cable, and optical fibers with extremely large number are arranged in the multi-core optical cable, so that the thickness degree of the multi-core optical cable is larger than that of a conventional optical cable due to the large arrangement amount of the optical fibers, and the multi-core optical cable is easy to generate local damage after being stressed. The existing multi-core optical cable generally adopts a multi-layer armored layer-stranding structure design for protecting the internal optical fiber, and the design mode can lead the weight of the optical cable to be increased sharply and has limited protection effect.
Disclosure of Invention
The invention provides a pressure-resistant multi-core optical cable, which aims to solve the problems that the existing multi-core optical cable is easy to damage after being pressed, the multilayer stranded armor design is easy to increase the weight of the optical cable, the laying and transportation cost of the optical cable is increased, the actual protection effect is limited and the like.
The invention aims to:
firstly, ensuring that a larger space can be used for covering a large number of optical fibers in the optical cable;
secondly, ensuring that the optical cable has good pressure resistance;
and thirdly, the weight of the optical cable is reduced.
In order to achieve the purpose, the invention adopts the following technical scheme.
A pressure resistant multi-core optical cable comprising:
an outer sheath, an inner sheath and an optical fiber;
the inner sheath is provided with an inner sheath cavity along the axial direction of the optical cable, the optical fiber is arranged in the inner sheath cavity along the axial direction of the optical cable, the outer sheath is provided with an outer sheath cavity along the axial direction of the optical cable, and the inner sheath is arranged in the outer sheath cavity;
the radial section of the outer sleeve cavity is a regular polygon, and the number of the sides is odd;
each inner edge angle of the outer sleeve cavity is correspondingly provided with an arc tube, the radial section of each arc tube is arc-shaped, and the two arc ends of each arc tube are fixedly connected with the side walls of the two sides of the corresponding edge angle of each arc tube;
the outer surface of the inner sheath is also sleeved with a special-shaped elastic beam tube which is formed by alternately arranging convex parts and concave parts, the number of the convex parts is the same as the number of the inner edges and corners of the outer sheath cavity, the convex parts are opposite one by one, the middle parts of the convex parts are externally tangent to the arc tubes, and the convex parts are tangent to the outer wall of the inner sheath.
As a preference, the first and second liquid crystal compositions are,
the number of the sides of the outer sleeve cavity is 5, 7, 9 or 11.
As a preference, the first and second liquid crystal compositions are,
a large spring pipe and a small spring pipe are further arranged between the inner sheath and the outer sheath, the large spring pipe is arranged outside the special-shaped elastic beam pipe and is tangent to the side wall of the outer sheath cavity and the concave portion of the special-shaped elastic beam pipe, and the small spring pipe is arranged between the special-shaped elastic beam pipe and the inner sheath and is tangent to the convex portion of the special-shaped elastic beam pipe and the outer wall of the inner sheath.
As a preference, the first and second liquid crystal compositions are,
the section of the inner sleeve cavity is a round-corner regular hexagon.
As a preference, the first and second liquid crystal compositions are,
and an armor layer is also arranged between the inner sheath and the special-shaped elastic beam tube.
As a preference, the first and second liquid crystal compositions are,
and a protective functional layer is arranged on the outer surface of the outer sheath.
As a preference, the first and second liquid crystal compositions are,
the protective functional layer is an anti-oxidation layer or a waterproof layer or a flame-retardant layer.
The invention has the beneficial effects that:
1) the compression resistance of the optical cable can be obviously improved while the light weight of the optical cable can be realized;
2) the cable has a large space inside for arranging optical fibers.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a force diagram of the outer sheath portion;
in the figure: 100 outer sheath, 101 outer sheath cavity, side wall 101a, arc tubes 102, 103 functional protection layer, inner sheath 200, inner sheath cavity 201, optical fiber 300, special-shaped elastic beam tube 400, 401 convex part, 402 concave part, 403 large spring tube, 404 small spring tube and 405 armor layer.
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
The invention relates to a pressure-resistant multi-core optical cable as shown in fig. 1, which is characterized in that the existing multi-core optical cable has a large number of internal optical fibers and is compactly arranged, so that a good protection effect is difficult to realize, and the arrangement of a single-layer or multi-layer metal protection structure can cause the weight of the optical cable to be increased, and the invention improves the structure of the existing multi-core optical cable in order to overcome the problems, and specifically comprises the following components:
the optical fiber 300 is a single-mode optical fiber or a multimode optical fiber or an optical fiber bundle, the inner sheath 200 is provided with an inner sheath cavity 201 along the axial direction of the optical cable, the optical fiber 300 is arranged in the inner sheath cavity 201 along the axial direction of the optical cable, the outer sheath 100 is provided with an outer sheath cavity 101 along the axial direction of the optical cable, and the inner sheath 200 is arranged in the outer sheath cavity 101;
the radial section of the outer jacket cavity 101 is a regular polygon, the number of the sides is odd, and the sides can be selected to be 5 sides, 7 sides, 9 sides or 11 sides, wherein the outer jacket cavity 101 is of a regular heptagon structure in the embodiment;
the outer sleeve cavity 101 adopts odd sides, the main purpose is to change the force guiding form so as to indirectly change the stress form of the inner sheath 200, when the number of the sides of the regular polygon outer sleeve cavity 101 is odd, each inner edge angle is opposite to one side wall, and the inner edge angle of the regular polygon outer sleeve cavity 101 with even sides is opposite to the inner edge angle and the side wall is opposite to the side wall, so that the uneven guiding stress can be formed on the outer sleeve cavity 101 with odd sides, and the optical cable is easier to form an asymmetric deformation trend when deformed under the action of external force, so as to form lateral guiding;
as shown in fig. 2, when a symmetrical external force F1 acts, a force F2 is formed when the external force acts on the inner corner, a force F3 is formed when the external force acts on the side wall, the force F2 is conducted along the a direction, the force F3 is conducted along the b direction, a force F4 is formed on the side wall 101a, the direction of the force F4 is directed obliquely downward, and a certain weakening effect is generated on the force F3. Compared with the regular polygon outer sleeve cavity 101 with even number of sides, the invention can simultaneously reduce the transverse deformation and the longitudinal deformation of the outer sleeve cavity 101, reduce the acting force on the optical fiber 300 and generate better protection effect;
tests show that the more the number of sides of the outer jacket cavity 101 is, the larger the internal allowance space is, the more the optical fibers 300 can be set, but the more the number of the sides is, the deformation resistance effect of the outer jacket cavity 101 is weakened, and tests show that 5 sides, 7 sides, 9 sides and 11 sides can keep good deformation resistance effect and give consideration to the internal space, and the comprehensive effect of the 7 sides is optimal, so that the outer jacket cavity 101 with the regular polygon cross section of the 7 sides is set in the embodiment;
each inner edge angle of the outer jacket cavity 101 is correspondingly provided with an arc tube 102, the radial section of each arc tube 102 is arc-shaped, two arc ends of each arc tube are fixedly connected to the side walls of two sides of the inner edge angle corresponding to the arc tube 102, the top point of each arc tube 102 is tangent to the outer surface of the inner jacket 200, the inner jacket 200 and the outer jacket 100 are separated by the arrangement of the arc tubes 102, the inner jacket 200 can be positioned and fixed, shaking or deviation of the inner jacket 200 is avoided, meanwhile, the outer jacket 100 is difficult to generate direct acting force on the inner jacket 200, a buffering effect is achieved, and damage to the optical fibers 300 arranged in the inner jacket 200 is difficult to generate;
the arc tube 102 is made of elastic materials, the optical cable is made of elastic rubber materials, the elastic rubber has the advantages of being wide in source, low in price, easy to obtain and the like, and the whole weight of the optical cable can be light.
In a still further aspect of the present invention,
the outer surface of the inner sheath 200 is further sleeved with a special-shaped elastic beam tube 400, the structure of the special-shaped elastic beam tube 400 is as shown in fig. 1, the special-shaped elastic beam tube 400 is formed by alternately arranging convex parts 401 and concave parts 402, the number of the convex parts 401 is the same as that of the inner edges and corners of the outer sheath cavity 101, the convex parts 401 are opposite one by one, the middle parts of the convex parts 401 externally tangent to the arc tubes 102 and are tangent to the outer wall of the inner sheath 200, the special-shaped elastic beam tube 400 can further separate the outer sheath 100 from the inner sheath 200, and pressure is prevented from being directly formed on the.
Further, still be provided with big spring pipe 403 and little spring pipe 404 between inner sheath 200 and outer sheath 100, big spring pipe 403 sets up outside dysmorphism elasticity beam tube 400, and with the lateral wall of overcoat chamber 101, the concave part 402 of dysmorphism elasticity beam tube 400 is tangent, little spring pipe 404 sets up between dysmorphism elasticity beam tube 400 and inner sheath 200, respectively with convex part 401 of dysmorphism elasticity beam tube 400, the outer wall of inner sheath 200 is tangent, it can support and fix a position dysmorphism elasticity beam tube 400 to set up big spring pipe 403 and little spring pipe 404 outer sheath chamber 101, good support, fixed effect has, can further strengthen buffering and isolation simultaneously, avoid external force direct conduction to on the inner sheath 200, realize good protection effect to optic fibre 300.
Further, in the present invention,
the cross-section of inner jacket chamber 201 is fillet regular hexagon, fillet regular hexagon is favorable to the abundant packing setting of optic fibre 300 in inner jacket chamber 201, the make full use of in inner jacket chamber 201 space has been taken into account and large capacity optical cable has been made easily, inner jacket chamber 201 adopts fillet regular hexagon structure, can make the even atress of optic fibre 300, avoid leading to the damaged condition of optic fibre 300 to take place because of local atress, combine the big spring pipe 403 and the little spring pipe 404 that set up, the surface of inner jacket 200 forms evenly distributed's stress point, external force is after abundant buffering, the surface of sheath 200 including the even effect of big spring pipe 403 of rethread and little spring pipe 404, make the actual atress of optic fibre 300 less and even, be difficult for impaired.
Further, in the present invention,
an armor layer 405 is further arranged between the inner sheath 200 and the special-shaped elastic beam tube 400, the armor layer 405 is wrapped or extruded on the outer wall of the inner sheath 200, the concave part 402 of the special-shaped elastic beam tube 400 is internally tangent to the outer surface of the armor layer 405, the armor layer 405 can be made of rubber or metal with certain hardness, and the rubber material is usually selected in consideration of the weight of the optical cable;
the arrangement of the armor layer 405 can further improve the rigidity of the inner sheath 200, reduce the effect of the large spring tube 403 and the small spring tube 404 on the inner sheath 200, and further improve the compression resistance effect of the whole optical cable;
the outer surface of the outer sheath 100 is provided with a protective functional layer 103, and the protective functional layer 103 is used for coating or extruding a high molecular material to form a structural layer with functions of oxidation resistance, water resistance, flame retardance and the like.
Claims (7)
1. A pressure resistant multi-core fiber optic cable, comprising:
an outer sheath, an inner sheath and an optical fiber;
the inner sheath is provided with an inner sheath cavity along the axial direction of the optical cable, the optical fiber is arranged in the inner sheath cavity along the axial direction of the optical cable, the outer sheath is provided with an outer sheath cavity along the axial direction of the optical cable, and the inner sheath is arranged in the outer sheath cavity;
the radial section of the outer sleeve cavity is a regular polygon, and the number of the sides is odd;
each inner edge angle of the outer sleeve cavity is correspondingly provided with an arc tube, the radial section of each arc tube is arc-shaped, and the two arc ends of each arc tube are fixedly connected with the side walls of the two sides of the corresponding edge angle of each arc tube;
the outer surface of the inner sheath is also sleeved with a special-shaped elastic beam tube which is formed by alternately arranging convex parts and concave parts, the number of the convex parts is the same as the number of the inner edges and corners of the outer sheath cavity, the convex parts are opposite one by one, the middle parts of the convex parts are externally tangent to the arc tubes, and the convex parts are tangent to the outer wall of the inner sheath.
2. The pressure resistant multi-core optical cable of claim 1,
the number of the sides of the outer sleeve cavity is 5, 7, 9 or 11.
3. The pressure resistant multi-core optical cable of claim 1,
a large spring pipe and a small spring pipe are further arranged between the inner sheath and the outer sheath, the large spring pipe is arranged outside the special-shaped elastic beam pipe and is tangent to the side wall of the outer sheath cavity and the concave portion of the special-shaped elastic beam pipe, and the small spring pipe is arranged between the special-shaped elastic beam pipe and the inner sheath and is tangent to the convex portion of the special-shaped elastic beam pipe and the outer wall of the inner sheath.
4. The pressure resistant multi-core optical cable of claim 1,
the section of the inner sleeve cavity is a round-corner regular hexagon.
5. The pressure resistant multi-core optical cable of claim 1,
and an armor layer is also arranged between the inner sheath and the special-shaped elastic beam tube.
6. The pressure resistant multi-core optical cable of claim 1,
and a protective functional layer is arranged on the outer surface of the outer sheath.
7. The pressure resistant multi-core optical cable of claim 6,
the protective functional layer is an anti-oxidation layer or a waterproof layer or a flame-retardant layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011378095.2A CN112433313B (en) | 2020-11-30 | 2020-11-30 | Pressure-resistant multi-core optical cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011378095.2A CN112433313B (en) | 2020-11-30 | 2020-11-30 | Pressure-resistant multi-core optical cable |
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| CN112433313A true CN112433313A (en) | 2021-03-02 |
| CN112433313B CN112433313B (en) | 2022-08-05 |
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| CN202011378095.2A Active CN112433313B (en) | 2020-11-30 | 2020-11-30 | Pressure-resistant multi-core optical cable |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113703107A (en) * | 2021-07-27 | 2021-11-26 | 杭州富通通信技术股份有限公司 | Optical fiber ribbon 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 |
| CN113848618A (en) * | 2021-09-07 | 2021-12-28 | 富通集团（嘉善）通信技术有限公司 | 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN113703107A (en) * | 2021-07-27 | 2021-11-26 | 杭州富通通信技术股份有限公司 | Optical fiber ribbon 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 |
| CN113848618A (en) * | 2021-09-07 | 2021-12-28 | 富通集团（嘉善）通信技术有限公司 | 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 |
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| Publication number | Publication date |
|---|---|
| CN112433313B (en) | 2022-08-05 |
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