CN111679387A - Optical cable - Google Patents
Optical cable Download PDFInfo
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- CN111679387A CN111679387A CN202010576332.XA CN202010576332A CN111679387A CN 111679387 A CN111679387 A CN 111679387A CN 202010576332 A CN202010576332 A CN 202010576332A CN 111679387 A CN111679387 A CN 111679387A
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- sheath
- optical cable
- inner sheath
- outer sheath
- cable according
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4415—Cables for special applications
- G02B6/4427—Pressure resistant cables, e.g. undersea cables
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- 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
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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
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
- G02B6/4432—Protective covering with fibre reinforcements
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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
- G02B6/4429—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
Abstract
The invention belongs to the field of cables, and particularly relates to an optical cable. It includes: the optical fiber wire, the inner sheath and the outer sheath; the inner sheath is coated outside the optical fiber wire, and the outer sheath is coated outside the inner sheath; the sections of the inner sheath and the outer sheath are both triangular; the optical fiber line is tangent to the inner side walls of the waist and the bottom of the two sides of the inner sheath, and the side surface of the inner sheath is arranged corresponding to the side surface of the outer sheath. The optical cable has good structural stability; the longitudinal pressure resistance is good; the optical fiber has better anti-deformation capability, and the influence and damage to the optical fiber after deformation are less.
Description
Technical Field
The invention belongs to the field of cables, and particularly relates to an optical cable.
Background
Optical fiber cables are very common cables for optical signal transmission, and play a very important role in modern society. The mainstream signal transmission means at present is carried out through an optical cable. Therefore, the amount of laying the optical cable is also large.
The optical cable is mainly laid by burying the optical cable to the ground bottom.
However, the existing optical cable is subjected to longitudinal pressure for a long time after being buried, and is gradually deformed and forms a large permanent deformation amount, for example, when the round optical cable is buried for a long time and is overhauled, the round optical cable is found to be permanently deformed into an oval shape, and the inner optical fiber is easily extruded. In addition, the aging of the optical cable may cause the deformation of the optical cable to be increased, resulting in damage to the internal optical fiber.
Disclosure of Invention
The problems that the existing optical cable is limited in longitudinal pressure resistance, is easily influenced by longitudinal pressure when buried, generates large permanent deformation, extrudes and damages an internal optical fiber and the like are solved. The invention provides an optical cable.
The invention aims to:
firstly, the longitudinal pressure resistance of the optical cable is improved;
secondly, the optical cable has better anti-deformation capability;
thirdly, the optical cable is not easy to generate larger extrusion effect after being deformed;
fourthly, the whole structure has better stability.
In order to achieve the purpose, the invention adopts the following technical scheme.
An optical cable, comprising:
the optical fiber wire, the inner sheath and the outer sheath;
the inner sheath is coated outside the optical fiber wire, and the outer sheath is coated outside the inner sheath;
the sections of the inner sheath and the outer sheath are both triangular;
the optical fiber line is tangent to the inner side walls of the waist and the bottom of the two sides of the inner sheath, and the side surface of the inner sheath is arranged corresponding to the side surface of the outer sheath.
As a preference, the first and second liquid crystal compositions are,
the sections of the inner sheath and the outer sheath are both in a rounded triangle shape.
As a preference, the first and second liquid crystal compositions are,
the corners of the waist bottoms on two sides of the outer sheath are provided with main reinforcing parts;
the main reinforcing part is arched in section.
As a preference, the first and second liquid crystal compositions are,
the corner at the top of the outer sheath is provided with an axial through hole, and an auxiliary reinforcing piece axially penetrates through the through hole.
As a preference, the first and second liquid crystal compositions are,
the auxiliary reinforcing part is composed of two parts, namely a columnar bone part and a connecting part for connecting the bone part, the connecting part is arranged on the lower half part between the bone parts, the cross section of the bone part is circular, and the connecting part is connected with the bone part to form the auxiliary reinforcing part.
As a preference, the first and second liquid crystal compositions are,
a first buffer strip is axially arranged between the inner sheath and the outer sheath;
first buffering strip sets up between sheath bottom and oversheath bottom including, the both ends end of first buffering strip inwards butt the lateral wall of inner sheath bottom respectively, and the inside wall of the outside butt of middle part or embedding oversheath bottom of first buffering strip.
As a preference, the first and second liquid crystal compositions are,
a second buffer strip is axially arranged between the inner sheath and the outer sheath;
the two second buffer strips are symmetrically arranged between the two side waists of the inner sheath and the two side waists of the outer sheath respectively, the end heads at the two ends of the second buffer strips are abutted to the inner walls of the two side waists of the outer sheath, and the middle part of the second buffer strip is inwardly abutted to the middle part of the outer side wall of the two side waists of the inner sheath.
As a preference, the first and second liquid crystal compositions are,
the gap of the inner sheath is filled with filler;
the inner filler is a filling rope.
As a preference, the first and second liquid crystal compositions are,
and an outer filler is filled between the outer sheath and the inner sheath.
As a preference, the first and second liquid crystal compositions are,
the outer filler is a water-blocking filler.
The invention has the beneficial effects that:
1) the structure stability is good;
2) the longitudinal pressure resistance is good;
3) the optical fiber has better anti-deformation capability, and the influence and damage to the optical fiber after deformation are less.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of an auxiliary reinforcement member of the present invention;
in the figure: 100 optic fibre line, 101 non-woven fabrics band, 200 inner sheaths, 201 arc arch, 300 oversheath, 400 auxiliary reinforcement, 401 bone portion, 402 connecting portion, 500 main reinforcement, 501 slot part, 502 arch, 600 first buffering strip, 601 first buffering strip's both ends end, 700 second buffering strip, 701 second buffering strip's both ends end, 800 inner packing, 900 outer packing.
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
An optical cable as shown in fig. 1, comprising:
a fiber optic line 100, an inner sheath 200 and an outer sheath 300;
the optical fiber line 100 is composed of single-mode or multi-mode optical fibers, a non-woven fabric tape 101 is tightly wrapped on the outer surface of the optical fiber line to carry out primary protection, and the non-woven fabric tape 101 mainly protects the optical fiber line 100 from abrasion and realizes a certain moisture-proof effect;
the inner sheath 200 and the outer sheath 300 are both triangular in cross section as shown in the figure, the present embodiment is preferably an equilateral triangle, and generally, tests show that the technical effect basically equivalent to that of the present embodiment can be realized when the angle of the triangle is controlled within the range of 58-62 degrees;
the cross section of the outer sheath 300 is a rounded equilateral triangle, when the outer sheath 300 in the shape is subjected to longitudinal pressure from top to bottom after being buried, the outer sheath does not directly bear extrusion and generate certain deformation and is oval like a conventional circular optical cable, but slides down along the oblique edges of the left and right side waists of the outer sheath 300, force received by the top end round corners can be dispersed along the oblique edges of the two side waists, and inward and downward extrusion forces applied to the two side waists can also be transmitted and dispersed to the bottom so as to reduce the deformation of the whole outer sheath 300;
in addition, compared with the mode of directly adopting an acute angle, the mode of adopting the fillet can reduce the processing difficulty of extrusion molding of the outer sheath 300, and avoid the problems that the corner of the acute angle is easy to generate bubbles, gaps and the like, and on the other hand, the corner of the acute angle is very easy to generate the problem of being inclined to one side when being subjected to the initial longitudinal pressure acting force, so that the whole optical cable is easy to turn over in the embedding process, and although the outer sheath 300 with the triangular cross section has good anti-twisting capability, the optical cable still can turn over under the action of larger longitudinal pressure, so that the optical fiber line 100 in the optical cable is twisted, and the optical signal transmission is influenced;
the section of the inner sheath 200 is similar to that of the outer sheath 300 and is also in a shape of a rounded equilateral triangle, the optical fiber line 100 is tangent to the inner side walls of the waist and the bottom of the two sides of the inner sheath 200, the inner sheath 200 clamps and fixes the optical fiber line 100, the gap of the inner sheath 200 is filled with the filler 800, and the filler 800 is a filler rope or other common optical cable fillers;
the edges of the inner sheath 200 and the outer sheath 300 are in one-to-one correspondence and parallel, the outer sheath 300 covers the outer part of the inner sheath 200, an outer filler 900 is filled between the outer sheath 300 and the inner sheath 200, the outer filler 900 is water-blocking paste, water-blocking yarn, water-blocking powder or water-blocking rope, the outer filler 900 not only can play a role in filling and supporting the whole optical cable to realize the shaping effect, but also can further provide a functional layer with a waterproof function, in addition, the corner part of the inner sheath 200 protrudes outwards to form an arc-shaped protrusion 201, the arc-shaped protrusion 201 is aligned with the round corner of the outer sheath 300, when the outer sheath 300 deforms under the extrusion action of external force, 96.3% probability deformation occurs at the upper vertex and two sides firstly through three hundred times of pressure tests, and the difficulty of inward shrinkage deformation of the whole optical cable is increased and the deformation is not easy to occur through the matching arrangement of the inner sheath 200 and, the structure stability and the pressure resistance are higher;
performing a pressure test in the same way, wherein only the outer sheath 300 is arranged as a control group A, a round sheath made of the same conventional material is arranged as a control group B, and the inner sheath 200 and the outer sheath 300 are arranged as a test group A;
under the same longitudinal pressure (the longitudinal pressure is set to the force required for reducing the height of the outer sheath 300 of the control group A to 90% of the original height), the average deformation amount (the deformation amount calculation formula is: 100% - (height after force application/original height) x 100%) of the test group A is only 82.7% of that of the control group A, and the average deformation amount of the control group B is 121.6% of that of the control group A, so that the test results show that: the triangular structure of the outer sheath 300 greatly improves the longitudinal pressure resistance of the whole optical cable, and the matching arrangement of the outer sheath 300 and the inner sheath 200 further greatly improves the longitudinal pressure resistance of the optical cable;
further, the method comprises the following steps of;
the fillet parts of the waist bottoms on the two sides of the outer sheath 300 are provided with main reinforcements 500, the sections of the main reinforcements 500 are arched, the main reinforcements can be prepared by common metal materials or other common reinforcement materials, and the main reinforcements are provided with groove parts 501 and arch parts 502 when viewed from the section, the groove parts 501 are inwards aligned with the arc-shaped bulges 201 of the inner sheath 200, and the arch parts 502 are outwards aligned with the fillet of the outer sheath 300;
an axial through hole is formed in the corner of the top of the outer sheath 300, an auxiliary reinforcing member 400 axially penetrates through the through hole, the auxiliary reinforcing member 400 is composed of two parts, namely a columnar bone part 401 and a connecting part 402 for connecting the bone part 401, as shown in fig. 2, the connecting part 402 is arranged in a manner of deviating from the interior of the optical cable, namely, the connecting part 402 is arranged at the lower half part between the bone parts 401 as shown in fig. 1 and 2, the cross section of the bone part 401 is circular, and the connecting part 402 is connected with the bone part 401 to form the auxiliary reinforcing member 400;
the main reinforcement 500 and the auxiliary reinforcement 400 are matched to ensure that the overall optical cable is more stably shaped and has certain bending resistance, and due to the requirement of optical cable rolling, the auxiliary reinforcement 400 is provided with the bone parts 401 and the connecting parts 402 at intervals to be matched with the triangular structure of the overall optical cable, so that the optical cable can be conveniently directionally rolled and is more convenient to transport and store;
further, the method comprises the following steps of;
a first buffer strip 600 and a second buffer strip 700 are axially arranged between the inner sheath 200 and the outer sheath 300;
the first buffer strip 600 is arranged between the bottom of the inner sheath 200 and the bottom of the outer sheath 300, the end heads 601 at two ends of the first buffer strip 600 are respectively inwards abutted against the outer side wall of the arc-shaped bulge 201 at the bottom of the inner sheath 200, and the middle part of the first buffer strip 600 is outwards abutted against or embedded into the inner side wall at the bottom of the outer sheath 300;
the arrangement of the first buffer strips 600 enables the acting force to be further dispersed to the first buffer strips 600 when the inner sheath 200 is extruded by longitudinal pressure and further acts on the bottom of the outer sheath 300, so that the action of the longitudinal pressure applied to the inner sheath 200 is reduced, the deformation of the inner sheath 200 is reduced, the structural stability of the inner sheath 200 is higher, the bottom of the embedded optical cable outer sheath 300 is difficult to deform due to stress, and the whole deformation of the optical cable is smaller and the structure is more stable;
two second buffer strips 700 are symmetrically arranged between the two side waists of the inner sheath 200 and the two side waists of the outer sheath 300 respectively, the end heads 701 at the two ends of the second buffer strips 700 are abutted to the inner walls of the two side waists of the outer sheath 300, and the middle part of the second buffer strips 700 is inwardly abutted to the middle part of the outer side wall of the two side waists of the inner sheath 200;
because the two side waists of the outer sheath 300 are easy to deform, the deformation of the second buffer strip 700 can also play a role in resisting the deformation of the two side waists of the outer sheath 300 to a certain extent, the deformation of the two side waists of the outer sheath 300 is reduced, the structural stability of the optical cable and the stress environment of the optical fiber line 100 are improved, the optical fiber line 100 is not easily influenced by the longitudinal pressure of the external action, and a good protection effect is further realized on the optical fiber line 100;
in addition, the arrangement mode of the second buffer strip 700 enables the deformation of the two side waists of the outer sheath 300 and the inner sheath 200 to be more coordinated, so that the inner sheath 200 is directly acted by external longitudinal pressure under the condition of no buffer action due to serious inward extrusion deformation of the two side waists of the outer sheath 300 can not be generated, when the two side waists of the outer sheath 300 deform, the middle part of the outer sheath is necessarily the place with the largest deformation amount, the edge part is driven to contract inwards when the outer sheath contracts inwards, the edge part firstly acts on the two end heads 701 of the second buffer strip 700 inwards, then the middle part of the two side waists of the inner sheath 200 is driven to deform a small amount, so that the inner sheath 200 and the outer sheath 300 are ensured not to be in direct contact, and after the deformation and the absorption of the second buffer strip 700, the force borne by the inner sheath 200 is extremely small, and the optical fiber 100 can hardly generate;
carrying out a pressure test on the optical cable with the structure to obtain a test group B, wherein the pressure test is the same as the pressure test;
tests show that under the same longitudinal pressure effect, the average deformation of the test group B is 61.3% of that of the control group A, and the test results show that the structure has very excellent longitudinal pressure resistance effect.
Claims (10)
1. An optical cable, comprising:
the optical fiber wire, the inner sheath and the outer sheath;
the inner sheath is coated outside the optical fiber wire, and the outer sheath is coated outside the inner sheath;
the sections of the inner sheath and the outer sheath are both triangular;
the optical fiber line is tangent to the inner side walls of the waist and the bottom of the two sides of the inner sheath, and the side surface of the inner sheath is arranged corresponding to the side surface of the outer sheath.
2. An optical cable according to claim 1,
the sections of the inner sheath and the outer sheath are both in a rounded triangle shape.
3. An optical cable according to claim 1,
the corners of the waist bottoms on two sides of the outer sheath are provided with main reinforcing parts;
the main reinforcing part is arched in section.
4. An optical cable according to claim 1 or 3,
the corner at the top of the outer sheath is provided with an axial through hole, and an auxiliary reinforcing piece axially penetrates through the through hole.
5. An optical cable according to claim 4,
the auxiliary reinforcing part is composed of two parts, namely a columnar bone part and a connecting part for connecting the bone part, the connecting part is arranged on the lower half part between the bone parts, the cross section of the bone part is circular, and the connecting part is connected with the bone part to form the auxiliary reinforcing part.
6. An optical cable according to claim 1,
a first buffer strip is axially arranged between the inner sheath and the outer sheath;
first buffering strip sets up between sheath bottom and oversheath bottom including, the both ends end of first buffering strip inwards butt the lateral wall of inner sheath bottom respectively, and the inside wall of the outside butt of middle part or embedding oversheath bottom of first buffering strip.
7. An optical cable according to claim 1,
a second buffer strip is axially arranged between the inner sheath and the outer sheath;
the two second buffer strips are symmetrically arranged between the two side waists of the inner sheath and the two side waists of the outer sheath respectively, the end heads at the two ends of the second buffer strips are abutted to the inner walls of the two side waists of the outer sheath, and the middle part of the second buffer strip is inwardly abutted to the middle part of the outer side wall of the two side waists of the inner sheath.
8. An optical cable according to claim 1,
the gap of the inner sheath is filled with filler;
the inner filler is a filling rope.
9. An optical cable according to claim 1,
and an outer filler is filled between the outer sheath and the inner sheath.
10. An optical cable according to claim 9,
the outer filler is a water-blocking filler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010576332.XA CN111679387B (en) | 2020-06-22 | 2020-06-22 | Optical cable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010576332.XA CN111679387B (en) | 2020-06-22 | 2020-06-22 | Optical cable |
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| CN111679387A true CN111679387A (en) | 2020-09-18 |
| CN111679387B CN111679387B (en) | 2022-02-08 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112289491A (en) * | 2020-10-26 | 2021-01-29 | 杭州富通通信技术股份有限公司 | Photoelectric hybrid cable |
| CN112327440A (en) * | 2020-11-27 | 2021-02-05 | 安徽长荣光纤光缆科技有限公司 | High-strength extrusion-resistant composite optical cable |
| CN112433313A (en) * | 2020-11-30 | 2021-03-02 | 杭州富通通信技术股份有限公司 | Pressure-resistant multi-core 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 |
| CN114167558A (en) * | 2021-10-19 | 2022-03-11 | 富通集团（嘉善）通信技术有限公司 | Mining optical cable and assembly thereof |
| CN114325975A (en) * | 2021-12-03 | 2022-04-12 | 杭州富通通信技术股份有限公司 | Triangular 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 |
| CN114914030A (en) * | 2022-05-31 | 2022-08-16 | 富通集团（嘉善）通信技术有限公司 | Buried optical cable |
| CN114967015A (en) * | 2022-06-28 | 2022-08-30 | 杭州富通通信技术股份有限公司 | Cable with |
| CN115128753A (en) * | 2022-07-28 | 2022-09-30 | 杭州富通通信技术股份有限公司 | Belt cable |
| CN117192713A (en) * | 2023-11-08 | 2023-12-08 | 江苏中天科技股份有限公司 | Underwater optical cable |
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| CN112289491A (en) * | 2020-10-26 | 2021-01-29 | 杭州富通通信技术股份有限公司 | Photoelectric hybrid cable |
| CN112327440A (en) * | 2020-11-27 | 2021-02-05 | 安徽长荣光纤光缆科技有限公司 | High-strength extrusion-resistant composite optical cable |
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| CN114167558B (en) * | 2021-10-19 | 2023-09-26 | 富通集团（嘉善）通信技术有限公司 | Mining optical cable and assembly thereof |
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| CN114325975A (en) * | 2021-12-03 | 2022-04-12 | 杭州富通通信技术股份有限公司 | Triangular optical cable |
| CN114325975B (en) * | 2021-12-03 | 2024-02-02 | 杭州富通通信技术股份有限公司 | Triangle 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 |
| CN114914030A (en) * | 2022-05-31 | 2022-08-16 | 富通集团（嘉善）通信技术有限公司 | Buried optical cable |
| CN114914030B (en) * | 2022-05-31 | 2023-09-15 | 富通集团（嘉善）通信技术有限公司 | Buried optical cable |
| CN114967015B (en) * | 2022-06-28 | 2024-01-12 | 杭州富通通信技术股份有限公司 | Belt cable |
| CN114967015A (en) * | 2022-06-28 | 2022-08-30 | 杭州富通通信技术股份有限公司 | Cable with |
| CN115128753A (en) * | 2022-07-28 | 2022-09-30 | 杭州富通通信技术股份有限公司 | Belt cable |
| CN117192713A (en) * | 2023-11-08 | 2023-12-08 | 江苏中天科技股份有限公司 | Underwater optical cable |
| CN117192713B (en) * | 2023-11-08 | 2024-02-02 | 江苏中天科技股份有限公司 | Underwater optical cable |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111679387B (en) | 2022-02-08 |
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