CN111653390B - Photoelectric hybrid cable - Google Patents
Photoelectric hybrid cable Download PDFInfo
- Publication number
- CN111653390B CN111653390B CN202010575224.0A CN202010575224A CN111653390B CN 111653390 B CN111653390 B CN 111653390B CN 202010575224 A CN202010575224 A CN 202010575224A CN 111653390 B CN111653390 B CN 111653390B
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- Prior art keywords
- optical fiber
- optical
- sheath
- shielding layer
- metal shielding
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
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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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/184—Sheaths comprising grooves, ribs or other projections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1895—Internal space filling-up means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
- H01B7/285—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
Abstract
The invention belongs to the field of cables, and particularly relates to a photoelectric hybrid cable. It includes: the conductive wire, the optical fiber sheath, the metal shielding layer and the outer sheath are arranged from inside to outside; the conducting wire is arranged at the cable core; the optical fiber protective sleeve is coated on the outer surface of the conducting wire and is formed by connecting a plurality of cambered surfaces with arc sections and outwards arched bulges end to end along the circumferential direction, the connecting parts between the cambered surfaces are internally provided with protective sleeve parts in a protruding mode, the protective sleeve parts are provided with axial through holes, and optical fibers are fixedly arranged in the protective sleeve parts in an axial direction in a penetrating mode; the metal shielding layer is coated outside the optical fiber sheath, the cambered surface is outwards tangent to the inner surface of the metal shielding layer, and the outer sheath is coated outside the metal shielding layer; a plurality of outwards-protruding arched supporting structures are fixedly arranged outside the conductive wire, and the arched supporting structures are arranged corresponding to the cambered surfaces of the optical fiber sheaths. The photoelectric hybrid cable has good lateral pressure resistance, and can well protect the optical fiber under the action of strong lateral pressure.
Description
Technical Field
The invention belongs to the field of cables, and particularly relates to a photoelectric hybrid cable.
Background
An Optical Power Cable (OPC) is a functional hybrid cable developed based on Optical cables and electric cables and having transmission capabilities of transmitting both electric signals or power and Optical signals. In the construction process of a power grid, in order to meet the requirement of transmitting electric energy and information on the same path, power lines and optical cables are often erected. Due to the birth of the photoelectric hybrid cable, the one-time erection, one-time construction and one-time investment of a line are realized, the construction period is greatly shortened, the construction cost is reduced, and the resources are saved. For example, in a practical application example, the construction cost of the optical-electric hybrid cable is saved by 23% or even higher than that of a common power cable and an optical cable, and the construction period is shortened by half compared with the conventional method.
However, the existing optical-electrical hybrid cable has very obvious use defects. Because the optical fiber in the photoelectric mixed cable is fragile, the optical fiber is easily damaged under the action of strong lateral pressure or through excessive bending. The bending problem is better avoided, but the improvement of the pressure resistance of the photoelectric hybrid cable is difficult. The main reason for this is that, in the conventional optical cable, in order to improve the pressure resistance of the optical cable, a plurality of layers of pressure-resistant structural layers with a large thickness can be provided, so as to protect the internal optical fiber and improve the pressure resistance of the optical cable. However, in the optical-electrical hybrid cable, due to the addition of the conductive wire with a larger wire diameter, the requirement of the whole wire diameter is not enough to enable the cable to be provided with various compressive structural layers with large thickness, and due to the particularity of the conductive wire, the application of partial compressive structural layers is also limited, so that when the existing optical-electrical hybrid cable is subjected to strong lateral pressure, the internal optical fiber is more easily damaged, the transmission capability of an optical signal is reduced, and even the optical fiber is broken under severe conditions.
Disclosure of Invention
The invention provides a photoelectric hybrid cable, aiming at solving the problems that the existing photoelectric hybrid cable has poor pressure resistance, and the existing improvement technology mostly adopts more pressure-resistant structure layers, so that the wire diameter of the whole photoelectric hybrid cable is increased, the material cost is greatly increased, and the like.
The invention aims to:
firstly, the pressure resistance of the photoelectric hybrid cable is improved;
secondly, the optical fiber part cannot become a main stressed object after being pressed, and the protection effect on the optical fiber is improved;
and thirdly, ensuring that the whole photoelectric hybrid cable has good structural stability.
In order to achieve the purpose, the invention adopts the following technical scheme.
An optical-electrical hybrid cable comprising:
the conductive wire, the optical fiber sheath, the metal shielding layer and the outer sheath are sequentially arranged from inside to outside;
the conductive wire is arranged at the axis of the photoelectric hybrid cable;
the optical fiber protective sleeve is coated on the outer surface of the conducting wire and is formed by connecting a plurality of cambered surfaces with arc sections and outwards arched bulges end to end along the circumferential direction, the connecting parts between the cambered surfaces are internally provided with protective sleeve parts in a protruding manner, the protective sleeve parts are internally provided with axial through holes and are tangent to the outer surface of the conducting wire, and optical fibers are axially and fixedly arranged in the protective sleeve parts;
the metal shielding layer is coated outside the optical fiber sheath, the cambered surface of the optical fiber sheath is outwards tangent to the inner surface of the metal shielding layer, and the outer sheath is tightly coated on the outer surface of the metal shielding layer;
the outer surface of the conductive wire is fixedly provided with a plurality of outwards-protruding arched supporting structures, and the arched supporting structures are arranged corresponding to the cambered surfaces of the optical fiber sheaths.
As a preference, the first and second liquid crystal compositions are,
the outward bulge of the arched support structure is tangent to the inner surface of the cambered surface of the optical fiber sheath.
As a preference, the first and second liquid crystal compositions are,
the root parts of the two sides of the arched support structure are tangent to the surface of the sheath part of the optical fiber sheath.
As a preference, the first and second liquid crystal compositions are,
the arch-shaped support structure is filled with a first filler.
As a preference, the first and second liquid crystal compositions are,
the first filling is gelatin.
As a preference, the first and second liquid crystal compositions are,
and a second filler is filled between the metal shielding layer and the optical fiber sheath.
As a preference, the first and second liquid crystal compositions are,
the second filler is a flame retardant filler.
As a preference, the first and second liquid crystal compositions are,
and a third filler is filled between the optical fiber sheath and the arched support structure.
As a preference, the first and second liquid crystal compositions are,
the third filler is a water-blocking filler.
The invention has the beneficial effects that:
1) the optical cable has high structural stability;
2) the optical fiber protective device has good lateral pressure resistance, and can well protect the optical fiber when being acted by strong lateral pressure.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
in the figure: 100 conductive wires, 200 arched support structures, 300 first filler, 400 optical fiber sheaths, 401 cambered surfaces, 402 sheath parts, 500 optical fibers, 501 bundle tubes, 600 metal shielding layers, 700 outer sheaths, 800 second filler and 900 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
An optical-electrical hybrid cable as shown in fig. 1, comprising:
the conductive wire 100, the optical fiber sheath 400, the metal shielding layer 600 and the outer sheath 700 are arranged from inside to outside in sequence;
the conductive wire 100 is arranged at the axis of the photoelectric hybrid cable, is used as the central part of the photoelectric hybrid cable, plays a role in transmitting electric power and/or electric signals, and is made of conventional copper wires with sheaths on the outer surfaces, copper-clad aluminum and other materials;
the optical fiber sheath 400 is made of silicon rubber with good elasticity, is coated on the outer surface of the conductive wire 100, and is formed by connecting a plurality of arc surfaces 401 with arc sections and outwards protruding in an arc shape end to end along the circumferential direction, as shown in fig. 1, the optical fiber sheath is formed by connecting four arc surfaces 401 end to end, a sheath part 402 is arranged at the joint of every two adjacent arc surfaces 401 and protrudes inwards, an axial through hole is formed in the sheath part 402 and serves as an optical fiber hole, an optical fiber 500 is axially and fixedly penetrated in the through hole, the optical fiber 500 is a single-mode and/or multi-mode optical fiber, the optical fiber 500 is coated with a bundle tube 501, and the outer surface of the bundle tube 501 can be provided with colors for distinguishing the optical fiber 500;
the metal shielding layer 600 is coated outside the optical fiber sheath 400, the cambered surface 401 of the optical fiber sheath 400 is outwards tangent to the inner surface of the metal shielding layer 600, and the outer sheath 700 is tightly coated on the outer surface of the metal shielding layer 600, so that the internal protection is realized.
In the optical-electrical hybrid cable with the above structure, the conductive wire 100 is directly used to replace the central reinforcement in the conventional optical cable, and is used as a core part for supporting the remaining layer structure of the optical-electrical hybrid cable and axially orienting the optical-electrical hybrid cable, so that the effect of transmitting electric power or electric signals can be further achieved.
The optical fiber sheath 400 with the structure separates the conducting wire 100 from the metal shielding layer 600 by arranging the arc surface 401, the arc surface 401 separating the conducting wire 100 and the metal shielding layer 600 is enabled to have the functions of compressible deformation and stress absorption, the optical fiber sheath 400 with the structure is further provided with the sheath part 402 for penetrating the optical fiber 500, the arc surface 401 in the optical fiber sheath 400 is outwards tangent to the inner surface of the metal shielding layer 600, and the sheath part 402 is tangent to the conducting wire 100, so that the integral stability of the photoelectric hybrid cable is ensured, the optical fiber sheath 400 also has the function of outwards supporting the integral framework of the photoelectric hybrid cable, in the structure, the sheath part 402 mainly plays a role of positioning and supporting, and when the photoelectric hybrid cable is stressed by external stress, the main stressed part is located at the arc surface 401.
If a radial external force is directly applied to the outer sheath 700, the outer sheath 700 contracts and deforms inwards and drives the metal shielding layer 600 to contract and deform inwards, and then the metal shielding layer is transmitted to the optical fiber sheath 400, in a conventional optical cable or optical-electrical hybrid cable with a nested structure, the optical fiber 500 is usually arranged at the axis center or the axis center edge of the cable, the outer part is buffered by arranging a multi-layer buffer structure to avoid the damage of the radial external force to the optical fiber 500, as shown in fig. 2, the structure of the invention avoids the direct radial pressure effect on the optical fiber 500 by changing the stress mode, for example, when the force F1 is applied, the cambered surface 401 contracts and deforms inwards and expands towards two sides, the cambered surface 401 firstly absorbs a part of the force and continues to transmit the force inwards, the stress of the optical fiber sheath 400 is roughly decomposed into the forces F2 and F3, the force F2 is converted into elastic potential energy to resist deformation and restore the sheath after the external force disappears, while the continuing force F3 is conducted directly through the sheath portion 402 and inwardly to the conductive wire 100.
Under the action of external force, the photoelectric hybrid cable adopting the structure can prevent the optical fiber 500 from being affected by the external force as much as possible, and the optical fiber 500 is protected by realizing stronger pressure resistance through the cooperation of the cambered surface 401 and the sheath part 402.
Further, the method comprises the following steps of;
a plurality of outward-protruding arched support structures 200 are fixedly arranged on the outer surface of the conductive wire 100, the number of the arched support structures 200 is equal to the number of the arc surfaces 401 of the optical fiber sheath 400, the arched support structures 200 correspond to the arc surfaces 401 of the optical fiber sheath 400 one by one, the outward protrusions of the arched support structures 200 are tangent to the inner surface of the arc surfaces 401 of the optical fiber sheath 400, the arc surfaces 401 of the optical fiber sheath 400 are supported, and the roots of the two sides of the arched support structures 200 are tangent to the surface of the sheath part 402 of the optical fiber sheath 400;
the arched support structures 200 are arranged to further position and fix the optical fiber sheath 400, so as to improve the stability of the optical fiber sheath 400, on the other hand, when the arched support structures 200 are not arranged, and the arc surface 401 is subjected to continuous external force, the sheath part 402 is always influenced by the acting force, and when the arched support structures 200 are arranged, and when the optical fiber sheath 400 is subjected to external force, the arched support structures 200 can firstly support the main stressed arc surface 401 of the optical fiber sheath 400, and two adjacent arched support structures 200 can generate a certain clamping effect on the sheath part 402, so as to prevent the arc surface 401 from expanding towards two sides, so that the structure of the optical-electrical hybrid cable is less prone to collapse, on the other hand, the arched support structures 200 can further replace the sheath part 402 to support the arc surface 401 from inside to outside, meanwhile, the external force applied to the arc surface 401 can be continuously conducted inwards to the conducting wire 100, and the protection effect on the optical fiber 500 in the photoelectric hybrid cable is further improved.
The arch-shaped support structure 200 is filled with a first filler 300;
the first filler 300 is gelatin or other common optical cable fillers, and in this embodiment, gelatin is used for filling, so that the arched support structure 200 has a better support effect, and can generate a larger elastic potential energy after deformation, thereby preventing the deformation from further expanding, and generating a larger elastic force to promote the restoration of the entire optical cable.
A second filler 800 is filled between the metal shielding layer 600 and the optical fiber sheath 400;
the second filler 800 is mainly selected from flame-retardant fillers, and in the embodiment, the fireproof flame-retardant yarn is selected as the filler, so that the friction force between the optical fiber sheath 400 and the metal shielding layer 600 can be increased, the matching stability of the optical fiber sheath and the metal shielding layer is improved, and the flame-retardant and fireproof effects can be achieved.
A third filler 900 is filled between the optical fiber sheath 400 and the arched support structure 200;
the third filler 900 is mainly selected from a water-blocking type filler, and in the embodiment, the water-blocking paste is selected as the filler, and the water-blocking paste has a water-blocking characteristic, so that the optical cable can be effectively prevented from being water-fed.
Claims (9)
1. An optical-electrical hybrid cable, comprising:
the conductive wire, the optical fiber sheath, the metal shielding layer and the outer sheath are sequentially arranged from inside to outside;
the conductive wire is arranged at the axis of the photoelectric hybrid cable;
the optical fiber protective sleeve is coated on the outer surface of the conducting wire and is formed by connecting a plurality of cambered surfaces with arc sections and outwards arched bulges end to end along the circumferential direction, the connecting parts between the cambered surfaces are internally provided with protective sleeve parts in a protruding manner, the protective sleeve parts are internally provided with axial through holes and are tangent to the outer surface of the conducting wire, and optical fibers are axially and fixedly arranged in the protective sleeve parts;
the metal shielding layer is coated outside the optical fiber sheath, the cambered surface of the optical fiber sheath is outwards tangent to the inner surface of the metal shielding layer, and the outer sheath is tightly coated on the outer surface of the metal shielding layer;
a plurality of outward-protruding arched supporting structures are fixedly arranged on the outer surface of the conducting wire, and the arched supporting structures are arranged corresponding to the cambered surfaces of the optical fiber sheaths;
the optical fiber sheath is made of elastic materials.
2. The hybrid optical/electrical cable according to claim 1,
the outward bulge of the arched support structure is tangent to the inner surface of the cambered surface of the optical fiber sheath.
3. The optical-electrical hybrid cable according to claim 1 or 2,
the root parts of the two sides of the arched support structure are tangent to the surface of the sheath part of the optical fiber sheath.
4. The hybrid optical/electrical cable according to claim 1,
the arch-shaped support structure is filled with a first filler.
5. The hybrid optical/electrical cable according to claim 4,
the first filling is gelatin.
6. The hybrid optical/electrical cable according to claim 1,
and a second filler is filled between the metal shielding layer and the optical fiber sheath.
7. The hybrid optical/electrical cable according to claim 6,
the second filler is a flame retardant filler.
8. The hybrid optical/electrical cable according to claim 1,
and a third filler is filled between the optical fiber sheath and the arched support structure.
9. The hybrid optical/electrical cable according to claim 8,
the third filler is a water-blocking filler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010575224.0A CN111653390B (en) | 2020-06-22 | 2020-06-22 | Photoelectric hybrid cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010575224.0A CN111653390B (en) | 2020-06-22 | 2020-06-22 | Photoelectric hybrid cable |
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| CN111653390A CN111653390A (en) | 2020-09-11 |
| CN111653390B true CN111653390B (en) | 2021-11-12 |
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| CN202010575224.0A Active CN111653390B (en) | 2020-06-22 | 2020-06-22 | Photoelectric hybrid cable |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113985543A (en) * | 2021-09-28 | 2022-01-28 | 杭州富通通信技术股份有限公司 | Optical cable with prestressed structure |
| CN114496361B (en) * | 2021-12-13 | 2023-09-19 | 杭州富通通信技术股份有限公司 | High-density photoelectric hybrid cable for data center |
| CN114063236B (en) * | 2022-01-12 | 2022-04-22 | 长飞光纤光缆股份有限公司 | Compression-resistant framework type optical cable and preparation method thereof |
| CN116189994A (en) * | 2023-01-31 | 2023-05-30 | 合肥兴联通讯有限公司 | Photoelectric hybrid cable for data center |
| CN116959801B (en) * | 2023-09-19 | 2023-12-08 | 四川江虹线缆制造有限公司 | 5G photoelectric communication cable and communication system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013054839A (en) * | 2011-09-01 | 2013-03-21 | Kita Nippon Electric Cable Co Ltd | Low wind pressure wire with fin |
| CN204423984U (en) * | 2014-12-30 | 2015-06-24 | 宁波神雕电缆有限公司 | A kind of cable of compact conformation |
| CN109215856A (en) * | 2017-07-07 | 2019-01-15 | Ls电线有限公司 | Cable noggin piece and submarine cable with the cable noggin piece |
| CN209418186U (en) * | 2019-03-23 | 2019-09-20 | 无锡市恒龙电缆材料有限公司 | Novel seabed cable filler strip |
| CN209728269U (en) * | 2019-04-12 | 2019-12-03 | 温州市沪泰电子线缆有限公司 | A kind of cable |
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2020
- 2020-06-22 CN CN202010575224.0A patent/CN111653390B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013054839A (en) * | 2011-09-01 | 2013-03-21 | Kita Nippon Electric Cable Co Ltd | Low wind pressure wire with fin |
| CN204423984U (en) * | 2014-12-30 | 2015-06-24 | 宁波神雕电缆有限公司 | A kind of cable of compact conformation |
| CN109215856A (en) * | 2017-07-07 | 2019-01-15 | Ls电线有限公司 | Cable noggin piece and submarine cable with the cable noggin piece |
| CN209418186U (en) * | 2019-03-23 | 2019-09-20 | 无锡市恒龙电缆材料有限公司 | Novel seabed cable filler strip |
| CN209728269U (en) * | 2019-04-12 | 2019-12-03 | 温州市沪泰电子线缆有限公司 | A kind of cable |
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