CN117031653A - Multi-core optical cable - Google Patents
Multi-core optical cable Download PDFInfo
- Publication number
- CN117031653A CN117031653A CN202310953155.6A CN202310953155A CN117031653A CN 117031653 A CN117031653 A CN 117031653A CN 202310953155 A CN202310953155 A CN 202310953155A CN 117031653 A CN117031653 A CN 117031653A
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- Prior art keywords
- core
- optical cable
- wire
- hollow
- wires
- Prior art date
- 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.)
- Pending
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- 230000003287 optical effect Effects 0.000 title claims abstract description 61
- 239000013307 optical fiber Substances 0.000 claims abstract description 31
- 239000000835 fiber Substances 0.000 claims abstract description 26
- 239000002131 composite material Substances 0.000 claims abstract description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000010453 quartz Substances 0.000 claims abstract description 14
- 238000005253 cladding Methods 0.000 claims description 9
- 239000004745 nonwoven fabric Substances 0.000 claims description 9
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 7
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 7
- 241001330002 Bambuseae Species 0.000 claims description 7
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 7
- 239000011425 bamboo Substances 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 abstract description 4
- 238000007906 compression Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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
- G02B6/4429—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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Communication Cables (AREA)
Abstract
The invention belongs to the field of cables, and particularly relates to a multi-core optical cable. It comprises the following steps: a sheath layer, a core wire and a core sleeve; the core wires are at least three and are uniformly distributed circumferentially around the axis of the optical cable in a tangent manner; the core wires are wrapped into bundles by the core sleeve, so that the core wires form a clustered central composite pipe under the wrapping of the core sleeve, and the central composite pipe is arranged at the axis of the sheath layer; the core wire main body is in a hollow wire shape or a hollow tubular shape, and an optical fiber wire, a coarse fiber reinforced wire and a hollow quartz wire are arranged in the core wire main body. The invention improves the internal structure, improves the utilization rate of the internal space of the optical cable, ensures the multi-core characteristics of the multi-core optical cable, and simultaneously obviously improves the mechanical property of the optical cable by a small amount of alternative wires, so that the optical cable has good compression resistance and impact resistance.
Description
Technical Field
The invention belongs to the field of cables, and particularly relates to a multi-core optical cable.
Background
Fiber optic cables are manufactured to meet optical, mechanical, or environmental performance specifications, and are communication cable assemblies that utilize one or more optical fibers disposed in a covering sheath as a transmission medium and that can be used individually or in groups, as well as being one of the usual and heavily used infrastructure requirements.
As the popularity of optical communication increases and the demand increases, the demand for multi-core optical cables in the market at present increases. Unlike conventional fiber optic cables, multi-core fiber optic cables are no longer suitable or poorly adaptable due to the large number of optical fibers within them. For example, in a conventional layer-stranding protection structure, the inner diameter of the layer needs to be increased along with the increase of the core number, and the inner diameter of the layer-stranding protection structure is increased along with the increase of the inner diameter of the layer-stranding protection structure, so that a stainless steel woven net can play a good role in protection, or the wire diameter of a metal wire used for the stainless steel woven net needs to be increased, or the thickness of the layer-stranding protection structure needs to be increased, so that the specific gravity of an optical cable is further improved and increased, and the use and transportation of the optical cable are very inconvenient.
However, other improvement modes generally lead to more compact internal space of the optical cable, and smaller space for accommodating the optical fiber cable, so that the number of cores of the multi-core cable is obviously limited, and the multi-core characteristic is difficult to maintain.
Disclosure of Invention
The invention provides a multi-core optical cable, which aims to solve the problems that the existing multi-core optical cable is not suitable for a conventional protection structure, and the specific weight of the optical cable can be reduced to a certain extent after the conventional multi-core optical cable is improved, but the inner space of the optical cable is further compressed and is more compact so that the multi-core characteristics of the optical cable are difficult to maintain.
The invention aims at:
1. the multi-core number characteristic of the optical cable can be maintained;
2. the mechanical property of the optical cable is improved, so that the optical cable has good compression resistance and impact resistance;
3. the utilization rate of the inner space is high, and the excessive increase of the wire diameter of the optical cable can be effectively avoided.
In order to achieve the above purpose, the present invention adopts the following technical scheme.
A multi-core optical cable comprising:
a sheath layer, a core wire and a core sleeve;
the core wires are at least three and are uniformly distributed circumferentially around the axis of the optical cable in a tangent manner;
the core wires are wrapped into bundles by the core sleeve, so that the core wires form a clustered central composite pipe under the wrapping of the core sleeve, and the central composite pipe is arranged at the axis of the sheath layer;
the core wire main body is in a hollow wire shape or a hollow tubular shape, and an optical fiber wire, a coarse fiber reinforced wire and a hollow quartz wire are arranged in the core wire main body.
As a preferred alternative to this,
the coarse fiber reinforced wire is composed of a plurality of long bamboo fiber bundles.
As a preferred alternative to this,
in the heart yearn, thick fine reinforcement line sets up in the optical cable radial outside, and hollow quartz line sets up in the optical cable radial innermost, and the optical fiber line fills the vacancy of wearing to establish in the heart yearn.
As a preferred alternative to this,
a plurality of buffer cavities are also arranged in the sheath layer;
the buffer cavity is correspondingly arranged on the radial outer side of the abutting part of the adjacent core wires, is in a sector shape arched outwards, and is internally provided with a hollow composite pipe which is abutted with the core sleeve and the buffer cavity wall.
As a preferred alternative to this,
the hollow composite tube is formed by wrapping a quartz tube with a rubber tube.
As a preferred alternative to this,
the inner surface of the core wire is provided with a non-woven fabric cladding.
As a preferred alternative to this,
the optical fiber line is formed by cladding and fixing a single optical fiber or a plurality of optical fibers by a beam tube and/or a non-woven fabric protective belt.
The beneficial effects of the invention are as follows:
the invention improves the internal structure, improves the utilization rate of the internal space of the optical cable, ensures the multi-core characteristics of the multi-core optical cable, and simultaneously obviously improves the mechanical property of the optical cable by a small amount of alternative wires, so that the optical cable has good compression resistance and impact resistance.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of the deformation of the optical cable in the stress process of the present invention;
in the figure: 100 sheath layers, 101 buffer cavities, 200 core wires, 201 non-woven fabric cladding layers, 300 optical fiber wires, 400 hollow quartz wires, 500 coarse fiber reinforcing wires, 501 bamboo fibers, 600 core sleeve pipes and 700 hollow composite pipes.
Detailed Description
The invention is described in further detail below with reference to specific examples and figures of the specification. Those of ordinary skill in the art will be able to implement the invention based on these descriptions. In addition, the embodiments of the present invention referred to in the following description are typically only some, but not all, embodiments of the present invention. Therefore, all other embodiments, which can be made by one of ordinary skill in the art without undue burden, are intended to be within the scope of the present invention, based on the embodiments of the present invention.
In the description of the present invention, it should be understood that the terms "thickness," "upper," "lower," "horizontal," "top," "bottom," "inner," "outer," "circumferential," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present invention. In the description of the present invention, the meaning of "a plurality" means at least two, for example, two, three, etc., unless explicitly defined otherwise, the meaning of "a number" means one or more.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The raw materials used in the examples of the present invention are all commercially available or available to those skilled in the art unless specifically stated otherwise; the methods used in the examples of the present invention are those known to those skilled in the art unless specifically stated otherwise.
Examples
A multi-core optical cable as shown in fig. 1, comprising in particular:
sheath layer 100, core wire 200, and core sleeve 600;
the core wires 200 are at least three, are uniformly distributed and arranged around the axial center of the optical cable in a circumferential direction and are in tangent abutting connection, the plurality of core wires 200 are wrapped and bundled by the core sleeve 600, the core sleeve 600 is used for restraining and fixing the core wires 200, so that the core wires 200 form a clustered central composite pipe under the wrapping of the core sleeve 600, and the central composite pipe is arranged at the axial center of the sheath layer 100 and is wrapped and protected by the sheath layer 100;
the core wire 200 is in a hollow wire shape or a hollow tubular shape, and is provided with an optical fiber wire 300, a coarse fiber reinforced wire 500 and a hollow quartz wire 400;
the inner surface of the core wire 200 is provided with the non-woven fabric cladding 201, the non-woven fabric cladding 201 ensures that the inner surface of the core wire 200 has higher flexibility, so that the damage of the optical fiber 300 in the core wire 200 is avoided, the protection effect on the optical fiber 300 is improved, and meanwhile, the non-woven fabric cladding 201 further has the effect of fixing the optical fiber 300, the coarse fiber reinforced wire 500 and the hollow quartz wire 400 in a wrapping manner;
the optical fiber line 300 is formed by cladding and fixing a single optical fiber or a plurality of optical fibers by a beam tube and/or a non-woven fabric protective belt;
the coarse fiber reinforced wire 500 is composed of a plurality of long bamboo fiber 501 bundles;
in the core wire 200, the thick fiber reinforcement wire 500 is disposed at the outermost side of the optical cable in the radial direction, and the hollow silica wire 400 is disposed at the innermost side of the optical cable in the radial direction, and the optical fiber 300 is filled in the remaining space provided in the core wire 200.
Under the cooperation of the structure, the ultra-fine multi-core optical cable has good tensile property, and can avoid the damage of the ultra-fine multi-core optical cable due to strong drawing;
in particular, the method comprises the steps of,
compared with the conventional optical cable, the ultra-fine multi-core optical cable is usually matched with a certain pipeline to be arranged as an outer shell, or is used for being arranged in equipment, and is usually damaged due to pressure or impact action, namely the optical cable in the industrial equipment is common, so that the optical cable has a large core number in the interior and a small whole wire diameter, and is not provided with an armor protection structure, but the optical cable is usually damaged due to tensioning and wiring in the use process, and the problems of broken fibers and the like are caused;
under the condition that an armor protection structure is not added, the special bamboo fiber 501 reinforcing wire is matched with the hollow quartz wire 400, so that the excessive occupation of the inner space of the optical cable and the increase of the wire diameter of the optical cable are avoided, namely the tensile property of the optical cable can be improved in a matched manner, because firstly, the hollow quartz wire 400 is easier to break after being pulled compared with the optical fiber wire 300, so that the optical cable can be protected from being broken by instantaneous strong tensile force as a sacrificial element, and the stress can be greatly absorbed in the breaking process of the hollow quartz wire 400 so as to protect the optical fiber wire 300 in the optical cable;
under the action of slow tensile force, the conventional ultra-fine multi-core optical cable is mainly extruded due to shrinkage of the outer sheath layer 100, and the fracture is caused by the combined action of radial stress, axial friction force and axial tensile force, but under the action of the coarse fiber reinforced wire 500, as shown in fig. 2, the coarse fiber reinforced wire 500 has small elastic modulus and is easy to deform and compress, so that the extrusion of the sheath layer 100 on the core wire 200 acts on the coarse fiber reinforced wire 500 to cause radial shrinkage and generate certain extension in the axial direction, the coarse fiber reinforced wire 500 can better absorb the radial acting force due to the characteristics of the bamboo fibers 501, and the axial friction force generated inside by the process of elongating the sheath layer 100 after shrinkage can be consumed and counteracted by friction among the bamboo fibers 501 in the coarse fiber reinforced wire 500, so that the tensile force generated by the external force on the optical fiber 300 is reduced.
Further, the method comprises the steps of,
a plurality of buffer cavities 101 are also arranged in the sheath layer 100;
the buffer cavity 101 is correspondingly arranged on the radial outer side of the abutting part of the adjacent core wires 200, is in a sector shape arched outwards, and is internally provided with a hollow composite pipe 700 which is abutted with the core sleeve 600 and the wall of the buffer cavity 101;
the hollow composite pipe 700 is formed by coating a quartz pipe with a rubber pipe;
the buffer cavity 101 is further configured to protect the optical fiber 300 in the core wire 200, so that a deformed allowance space exists at two circumferential sides of the core wire 200, so that damage to the optical fiber 300 due to acting force on two circumferential sides after the optical fiber 300 is stretched and the whole wire diameter is reduced is avoided, and in addition, the hollow composite tube 700 can improve the tensile threshold of the optical fiber, and meanwhile, a certain strengthening effect is formed on the compression resistance and the impact resistance of the optical fiber.
Claims (7)
1. A multi-core optical cable, comprising:
a sheath layer, a core wire and a core sleeve;
the core wires are at least three and are uniformly distributed circumferentially around the axis of the optical cable in a tangent manner;
the core wires are wrapped into bundles by the core sleeve, so that the core wires form a clustered central composite pipe under the wrapping of the core sleeve, and the central composite pipe is arranged at the axis of the sheath layer;
the core wire main body is in a hollow wire shape or a hollow tubular shape, and an optical fiber wire, a coarse fiber reinforced wire and a hollow quartz wire are arranged in the core wire main body.
2. A multi-core optical cable according to claim 1, wherein,
the coarse fiber reinforced wire is composed of a plurality of long bamboo fiber bundles.
3. A multi-core optical cable according to claim 1 or 2, wherein,
in the heart yearn, thick fine reinforcement line sets up in the optical cable radial outside, and hollow quartz line sets up in the optical cable radial innermost, and the optical fiber line fills the vacancy of wearing to establish in the heart yearn.
4. A multi-core optical cable according to claim 1, wherein,
a plurality of buffer cavities are also arranged in the sheath layer;
the buffer cavity is correspondingly arranged on the radial outer side of the abutting part of the adjacent core wires, is in a sector shape arched outwards, and is internally provided with a hollow composite pipe which is abutted with the core sleeve and the buffer cavity wall.
5. A multi-core optical cable according to claim 4, wherein,
the hollow composite tube is formed by wrapping a quartz tube with a rubber tube.
6. A multi-core optical cable according to claim 1, wherein,
the inner surface of the core wire is provided with a non-woven fabric cladding.
7. A multi-core optical cable according to claim 1, wherein,
the optical fiber line is formed by cladding and fixing a single optical fiber or a plurality of optical fibers by a beam tube and/or a non-woven fabric protective belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310953155.6A CN117031653A (en) | 2023-07-31 | 2023-07-31 | Multi-core optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310953155.6A CN117031653A (en) | 2023-07-31 | 2023-07-31 | Multi-core optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117031653A true CN117031653A (en) | 2023-11-10 |
Family
ID=88627269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310953155.6A Pending CN117031653A (en) | 2023-07-31 | 2023-07-31 | Multi-core optical cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117031653A (en) |
-
2023
- 2023-07-31 CN CN202310953155.6A patent/CN117031653A/en active Pending
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