CN112289491B

CN112289491B - Photoelectric hybrid cable

Info

Publication number: CN112289491B
Application number: CN202011156206.5A
Authority: CN
Inventors: 吴海港; 胡涛涛; 周杭明
Original assignee: Hangzhou Futong Communication Technology Co Ltd
Current assignee: Hangzhou Futong Communication Technology Co Ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2022-04-05
Anticipated expiration: 2040-10-26
Also published as: CN112289491A

Abstract

The invention belongs to the field of cables, and particularly relates to a photoelectric hybrid cable. It includes: the cable comprises a sheath layer, a framework, an optical fiber line and a conductive wire; an axial inner cavity is formed in the sheath layer, and the section of the inner cavity is hexagonal; the framework comprises an outer support, an inner support and an arc-shaped support which are arranged along the axial direction of the photoelectric hybrid cable; the inner support is composed of a triangular sleeve and an outer rib, the optical fiber line is arranged in the triangular sleeve, the outer rib is arranged at the corner of the triangular sleeve, the outer support is in a zigzag shape, and the end part of the outer support is abutted against the corner and the top of the side wall of the inner cavity and is abutted against the outer rib; the two ends of the arc-shaped bracket abut against the side faces of the outer ribs of the inner bracket and are arched outwards to abut against the side wall of the inner cavity. The photoelectric mixed cable has good structural stability; can realize good protection effect to inside optic fibre line, avoid it to receive external force directly to influence.

Description

Photoelectric hybrid cable

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 an integrated transmission medium that organically combines a metal wire and an Optical fiber and transmits electric energy and Optical information simultaneously, on the same way and in the same direction. The method realizes the integration of power flow, service flow and information flow. Through once erectting, once construction, once invest in, transmit information such as pronunciation, data, video when transmitting high-voltage electric energy, shortened the time limit for a project greatly, reduced construction cost, practiced thrift the resource, established solid foundation for smart power grid construction.

The existing photoelectric hybrid cable can only simply realize the photoelectric transmission function, mostly adopts a layer-stranded structure to realize the simple compounding of a conductor wire and an optical fiber wire, and easily causes the problem of damage to the optical fiber wire in the photoelectric hybrid cable by external pressure, and does not make reasonable improvement. Therefore, in the use process of the conventional photoelectric hybrid cable, after the conventional photoelectric hybrid cable is subjected to strong pressure, the power transmission function can be well maintained, but the optical signal transmission function is very easily influenced.

Therefore, it is a very important improvement direction of the hybrid optical/electrical cable to improve the structure of the hybrid optical/electrical cable to have good pressure resistance.

Disclosure of Invention

The invention provides a photoelectric hybrid cable, aiming at solving the problems that the existing photoelectric hybrid cable has good functionality, but the actual compression-resistant effect is limited, and external force is easy to directly act on an optical fiber wire to cause damage to the optical fiber wire, so that the transmission effect of optical signals is influenced and the like.

The purpose of the invention is:

firstly, the compression resistance of the photoelectric hybrid cable is improved;

secondly, under the action of external force, the optical fiber line is not easy to be directly stressed and damaged;

and thirdly, the structure stability is good.

In order to achieve the purpose, the invention adopts the following technical scheme.

An optical-electrical hybrid cable comprising:

the cable comprises a sheath layer, a framework, an optical fiber line and a conductive wire;

an axial inner cavity is formed in the sheath layer, and the section of the inner cavity is hexagonal;

the framework comprises an outer support, an inner support and an arc-shaped support which are arranged along the axial direction of the photoelectric hybrid cable;

the inner support is composed of a triangular sleeve and an outer rib, the optical fiber line is arranged in the triangular sleeve, the outer rib is arranged at the corner of the triangular sleeve, the outer support is in a zigzag shape, and the end part of the outer support is abutted against the corner and the top of the side wall of the inner cavity and is abutted against the outer rib;

the two ends of the arc-shaped bracket abut against the side faces of the outer ribs of the inner bracket and are arched outwards to abut against the side wall of the inner cavity.

As a preference, the first and second liquid crystal compositions are,

the cross section of the inner cavity is a hexagon with 120-degree rotational symmetry, and the inner wall of the inner cavity is formed by alternately forming short walls and long walls.

As a preference, the first and second liquid crystal compositions are,

the outer support is V-shaped, and two V-shaped ends of the outer support are abutted to the joint of the short wall and the long wall;

the end part of the outer bracket is arc-shaped.

As a preference, the first and second liquid crystal compositions are,

the triangular sleeve is regular triangle in cross section, a cavity with a triangular cross section is axially arranged in the triangular sleeve, and the optical fiber line is arranged in the cavity and is tangent to the side wall of the cavity.

As a preference, the first and second liquid crystal compositions are,

the outer surface of the sheath layer is provided with a flame-retardant layer or a moisture-proof outer layer or a layer structure with the composite function of the flame-retardant layer and the moisture-proof outer layer.

As a preference, the first and second liquid crystal compositions are,

the optical fiber line center is single mode fiber or multimode fiber or optical fiber bundle, and its surface cladding has the non-woven fabrics band, and non-woven fabrics band surface cover is equipped with the beam tube.

The invention has the beneficial effects that:

1) the structure stability is good;

2) can realize good protection effect to inside optic fibre line, avoid it to receive external force directly to influence.

Description of the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of the force applied to the optical-electrical hybrid cable according to the present invention;

FIG. 3 is a schematic view of the lower half structure under stress according to the present invention;

in the figure: 100 sheath layers, 101 inner cavities, 101a short walls, 101b long walls, 200 skeletons, 200a and 200b gaps, 201 and 201a outer supports, 201a1 and 201a2 outer support ends, 202 inner supports, 202a triangular sleeves, 202b outer ribs, 203a and 203b arc supports, 203b1 ends, 300 optical fiber lines, 301 single-mode optical fibers or multi-mode optical fibers or optical fiber bundles, 302 non-woven fabric wrapping bands, 303 bundle tubes and 400 conducting wires.

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 specifically includes:

sheath layer 100, backbone 200, optical fiber line 300 and conductive line 400;

the outer surface of the sheath layer 100 is provided with a flame retardant layer or a moisture-proof outer layer or a layer structure with a composite function of the flame retardant layer and the moisture-proof outer layer, and the outer surface of the sheath layer 100 is provided with the flame retardant layer in the embodiment;

the center of the optical fiber line 300 is a single-mode optical fiber or a multi-mode optical fiber or an optical fiber bundle 301, the outer surface of the optical fiber line is coated with a non-woven fabric wrapping tape 302, and the outer surface of the non-woven fabric wrapping tape is sleeved with a bundle tube 303;

an axial inner cavity 101 is formed in the sheath layer 100, the radial section of the inner cavity 101 is hexagonal and is rotationally symmetrical at 120 degrees, and the inner wall of the inner cavity is formed by alternately forming short walls 101a and long walls 101 b;

the framework 200 comprises an outer support 201, an inner support 202 and an arc-shaped support 203 which are arranged along the axial direction of the photoelectric hybrid cable;

the radial section of the outer support 201 is in a V shape, each short wall 101a is correspondingly provided with an outer support 201, the V-shaped two ends of the outer support 201 are abutted to the joint of the short wall 101a and the long wall 101b, in practical application, in order to reduce the pressure of the V-shaped two ends to the sheath layer 100, the V-shaped two ends are usually set to be arc ends, and the arc ends are tangent to the short wall 101a and the long wall 101 b;

the inner support 202 is composed of a triangular sleeve 202a and an outer rib 202b, an axial cavity is arranged inside the triangular sleeve 202a, the section of the cavity is triangular, the optical fiber line 300 is arranged in the cavity and is tangent to the inner wall of the cavity, the outer rib 202b is arranged at the corner of the triangular sleeve 202a, the triangular sleeve 202a is connected with the vertex of the V-shaped outer support 201 through the outer rib 202b, and the outer rib 202b bisects the vertex angle of the V-shaped outer support 201 and the vertex angle of the corresponding triangular sleeve 202a along the radial symmetric axis of the hybrid cable and passes through the axis of the hybrid cable.

The arc-shaped support 203 is arranged outside the triangular sleeve 202a, two ends of the arc-shaped support 203 are respectively abutted against the side walls of two adjacent outer ribs 202b, and the middle part of the arc-shaped support is arched outwards and tangent to the long wall 101b of the inner cavity 101;

the conducting wire 400 is arranged in a gap 200b formed by the outer support 201, the arc-shaped support 203 and the inner cavity 101 of the hybrid cable, the remaining vacant part of the gap 200b is filled with factice, the gap 200a between the arc-shaped support 203 and the inner support 202 is also filled with factice, and the outer side of the conducting wire 400 is tangent to the outer support 201, the arc-shaped support 203 and the inner cavity 101 of the hybrid cable;

because the optical fiber line 300 is more easily damaged when being subjected to external force, and the conductive wire 400 generally has better compression resistance and bending resistance, the optical fiber line 300 is less affected by the stress of the photoelectric hybrid cable through the arrangement of the framework 200;

as shown in fig. 2, due to the particularity of the cable structure of the present invention, no matter the cable is stressed in any direction, the cable can be decomposed as consisting of a plurality of stresses shown in fig. 2, i.e. the cable is stressed in the directions of the top and bottom sides of the triangular sheath 202a, and is respectively stressed by forces F1 and F2, under the action of force F1, both ends of the upper outer frame 201 receive the direct action of the sheath layer 100 to form an inward acting force F3, force F3 directly acts on the upper conductive wire 400, the upper end portions of the left and right arc-shaped frames 203 form a deformation in the xa direction by the conductive force transmitted by the conductive wire 400, and due to the particularity of the structure of the arc-shaped frames 203, the arc-shaped frames 203 generate a pressing force F6 to the conductive wire 400 contacted by the lower ends thereof in the deformation process, i.e. under the actions of the upper outer frame 201 and the left and right arc-shaped frames 203, most of the external force F1 is guided to act on the conductive wire 400, and on the other hand, the upper outer support 201 also has partial acting force which directly acts on the inner support 202 through the outer rib 202b to form acting force F4, because the cross section of the triangular sleeve 202a is a closed regular triangle, and under the condition that the top point of the upper end of the triangular sleeve is stressed, because the bottom ends of the left and right side walls of the triangular sleeve are fixed and do not receive guiding force for expanding the triangular sleeve, the left and right side walls can bulge and deform outwards along the middle part of the xb direction, the whole triangular sleeve 202a shrinks and deforms in the vertical direction of figure 2 and generates certain downward displacement, and under the condition that a plurality of supports deform and the conducting wire 400 is stressed, the absorption and the buffering of the external force F1 can be realized, so that the optical fiber 300 in the inner support 202 is not directly stressed and is basically not influenced by the action of the external force F1;

the lower end is stressed by F2, the lower sheath layer 100 generates an acting force F5 on the lower arc-shaped support 203B, under the action of F5, the left and right sides of the arc-shaped support 203B are stressed equally, so only one side is illustrated, as shown in fig. 3, the acting force of the sheath layer on the arc-shaped support 203B forms a deformation force a of the arc-shaped support 203B, under the combined action of the deformation force a and a downward weak displacement a of the triangular sleeve 202, the end 203B1 of the arc-shaped support 203B can be caused to expand laterally along the B direction and form a certain deformation displacement along the c direction, so that firstly, an acting force B is generated on the conducting wire 400 in fig. 3, and along with the deformation displacement of the end 203B1 along the c direction, the direction of the acting force B can also form a counterclockwise torsion until the direction is vertical, and on the other hand, under the action of the deformation of the arc-shaped support 203a on the side, the acting force C is generated on the lower outer support 201a, two ends 201a1/201a2 of the outer support 201a abut against the joint of the long wall 101B and the short wall 101a of the inner cavity 101 of the sheath layer 100, but different deformation trends are formed, wherein the end 201a1 on the upper side forms a deformation trend which inclines upwards along the direction e, acting force is generated on the conducting wire 400 connected above the end, the end 201a2 on the lower side does not deform, acting force D is generated on the conducting wire 400 connected with the side, under the combined action of the acting force B and the acting force D, the conducting wire 400 forms displacement along the direction F, and along with the displacement of the conducting wire 400, the acting force B also generates counterclockwise rotation, through the deformation of each part and the stress and displacement of the conducting wire 400, the external force F5 is weakened and buffered, the part of the triangular sleeve 202 does not always receive the force directly, the protective effect on the optical fiber wires in the optical fiber protective sleeve is very excellent.

Therefore, under the cooperation of the above structures, the external forces F1 and F2 are constantly buffered, dispersed and offset, and the external force that can actually act on the optical fiber 300 inside the triangular sleeve 202a of the inner bracket 202 is very small, thereby achieving a very excellent protection effect on the optical fiber 300.

Claims

1. An optical-electrical hybrid cable, comprising:

an axial inner cavity is arranged in the sheath layer, the radial section of the inner cavity is hexagonal and is rotationally symmetrical at 120 degrees, and the inner wall of the inner cavity is formed by alternately arranging short walls and long walls;

the radial section of the outer support is V-shaped, each short wall is correspondingly provided with an outer support, and the V-shaped two ends of the outer support are abutted to the joint of the short wall and the long wall;

the triangular sleeve is connected with the V-shaped vertex of the outer bracket through the outer rib, and the outer rib bisects the V-shaped vertex angle of the outer bracket and the vertex angle of the corresponding triangular sleeve along the radial symmetric axis of the mixed cable and passes through the axis of the mixed cable;

the arc-shaped support is arranged outside the triangular sleeve, two ends of the arc-shaped support are respectively abutted against two adjacent outer rib side walls, and the middle part of the arc-shaped support is arched outwards and tangent to the long wall of the inner cavity;

the conductor wire is arranged in a gap formed by the outer support, the arc-shaped support and the inner cavity of the mixed cable.

2. The hybrid optical/electrical cable according to claim 1,

3. The hybrid optical/electrical cable according to claim 1,