CN214897811U

CN214897811U - Optical fiber composite cable for winding drum

Info

Publication number: CN214897811U
Application number: CN202121298739.7U
Authority: CN
Inventors: 马辽林; 李华斌; 张滔; 任志颖
Original assignee: Hunan Valin Wire and Cable Co Ltd
Current assignee: Hunan Valin Wire and Cable Co Ltd
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2021-11-26
Anticipated expiration: 2031-06-10

Abstract

The utility model discloses a cable for reel of optical fiber composite, including cable core, enhancement layer and high strength rubber tensile layer wrap up the cable core from inside to outside, the cable core is formed by left-hand stranding of a plurality of power lines, ground wire, neutral conductor and optical unit, the optical unit is located the cable core center, a plurality of power lines are adjacently arranged along the circumference of the optical unit, the ground wire, the neutral conductor are respectively located in the clearance of two adjacent power lines; the power line comprises a power line core conductor and a power line core insulating layer wrapped outside the power line core conductor; the ground wire comprises a ground wire core conductor and a ground wire core insulating layer wrapped outside the ground wire core conductor; the neutral wire comprises a neutral wire conductor and a neutral wire insulating layer wrapped outside the neutral wire conductor; the optical unit comprises a fiber core, and a tensile fiber, a metal belt spiral tube and a metal braid layer which are wrapped outside the fiber core from inside to outside. The utility model discloses cable structure, reliable and stable, resistant crooked, tensile, anti-electromagnetic interference.

Description

Optical fiber composite cable for winding drum

Technical Field

The utility model relates to a cable technical field for the reel especially relates to a compound cable for reel of optic fibre.

Background

In ports and docks, reel cables are commonly used as cable connections for large mobile devices and also as carriers for signal control and transmission. The reel cable still need bear not little pulling force when frequently bending, and the cable easily appears bulging, wearing and tearing, wrinkling, even conductor fracture's problem, adopts conventional scheme to add optic fibre in the cable, still can appear optic fibre fracture's problem, can not satisfy user's requirement.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a compound reel of optic fibre is with cable.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a cable for an optical fiber composite reel comprises a cable core, a reinforcing layer and a high-strength rubber tensile layer, wherein the reinforcing layer and the high-strength rubber tensile layer wrap the cable core from inside to outside, the cable core is formed by left-hand twisting of a plurality of power lines, a ground line, a neutral line and an optical unit, the twist pitch ratio is 8-10, the optical unit is arranged in the center of the cable core, the plurality of power lines are adjacently arranged along the circumference of the optical unit, the ground line is arranged in a gap between two adjacent power lines, and the neutral line is arranged in a gap between the other two adjacent power lines;

the power line comprises a power line core conductor and a power line core insulating layer wrapped outside the power line core conductor;

the ground wire comprises a ground wire core conductor and a ground wire core insulating layer wrapped outside the ground wire core conductor;

the neutral wire comprises a neutral wire conductor and a neutral wire insulating layer wrapped outside the neutral wire conductor;

the optical unit comprises a fiber core, and a tensile fiber, a metal belt spiral tube and a metal braid layer which are wrapped outside the fiber core from inside to outside.

Preferably, the power line core conductor, the ground line conductor and the neutral line conductor are formed by twisting a plurality of copper wires or aluminum alloy wires with the monofilament diameter not greater than 0.3 mm.

Preferably, the power wire core insulating layer, the ground wire core insulating layer and the neutral wire insulating layer are made of ethylene propylene rubber.

Preferably, the fiber core comprises a plurality of bare fibers, tensile fibers, silicon-based fiber paste and a PBT (polybutylene terephthalate) sleeve, the tensile fibers are arranged outside the bare fibers, the PBT sleeve wraps the bare fibers and the tensile fibers, and the silicon-based fiber paste is filled between the PBT sleeve and the bare fibers and between the PBT sleeve and the tensile fibers.

Preferably, the reinforcing layer is a high-strength fiber woven reinforcing layer.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides a cable for reel that optic fibre is compound, conductor monofilament is no more than 0.3mm, and the compliance is better after the transposition, has improved tensile resistance, adopts aluminum alloy conductor can alleviate cable weight 40%, reduces manufacturing cost more than 50%; the insulating material is high-strength high-hardness ethylene propylene rubber, so that the stability of the cable is ensured, the anti-deformation capability of the cable is improved, the high-strength fiber rope is further used for weaving the reinforcing layer, the tensile force which can be borne by the cable is improved, the structure is stable and unchanged when the cable is bent and pressed, and the phenomenon that the sheath bulges and deforms is avoided; the optical fiber composite cable for the winding drum comprises a power line, a ground line, a neutral line core and an optical unit, is stable and reliable in structure, is resistant to bending and stretching, is resistant to electromagnetic interference, and can meet the working requirements of intelligent monitoring, real-time temperature measurement, unattended operation, remote control and the like; the cable is simple and convenient to install, optical cables do not need to be arranged independently, and the service life of the cable is long.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the structure of the light unit of the present invention.

In the figure: 1. a power core conductor; 2. a power wire core insulating layer; 3. a ground core conductor; 4. a ground wire core insulating layer; 5. a light unit; 6. a neutral conductor; 7. a neutral line insulating layer; 8. a reinforcing layer; 9. a high strength rubber tensile layer; 51. bare fiber; 52. a tensile fiber; 53. silicon-based fiber paste; 54. a PBT sleeve; 55. a tensile fiber layer; 56. a metal band spiral tube; 57. the copper wire braided layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of 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. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

referring to fig. 1-2, an optical fiber composite reel cable includes a core, a reinforcing layer 8, and a high-strength rubber tensile layer 9.

The cable core is formed by left-hand twisting of a plurality of power lines, ground lines, neutral lines and optical units 5, the twisting pitch-diameter ratio is 8-10, and high-strength fibers are adopted for weaving and reinforcing after twisting (namely a reinforcing layer 8); the optical unit 5 is arranged in the center of the cable core, the plurality of power lines are arranged adjacently along the circumference of the optical unit, the ground line is arranged in the gap between two adjacent power lines, and the neutral line is arranged in the gap between the other two adjacent power lines.

The power line comprises a power line core conductor 1 and a power line core insulating layer 2 wrapped outside the power line core conductor 1; the ground wire comprises a ground wire core conductor 3 and a ground wire core insulating layer 4 wrapped outside the ground wire core conductor 3; the neutral wire includes a neutral conductor 6, and a neutral insulation layer 7 wrapped around the outside of the neutral conductor 6.

The power wire core conductor 1, the ground wire conductor 3 and the neutral wire conductor 6 are formed by stranding a plurality of copper wires or aluminum alloy wires with the monofilament diameter not larger than 0.3mm, the power wire core insulating layer 2, the ground wire core insulating layer 4 and the neutral wire insulating layer 7 are made of ethylene propylene rubber, the tensile strength of the ethylene propylene rubber is not smaller than 14MPa, and the Shore hardness of the ethylene propylene rubber is 80-85.

The optical unit 5 includes a core, and a tensile fiber layer 55, a spiral metal-tape 56, and a metal braid layer 57 which are wrapped outside the core from inside to outside. The fiber core comprises a plurality of bare fibers 51, tensile fibers 52, silicon-based fiber paste 53 and a PBT (polybutylene terephthalate) sleeve 54, the tensile fibers 52 are arranged outside the bare fibers 51, the PBT sleeve 54 wraps the bare fibers 51 and the tensile fibers 52, and the silicon-based fiber paste 53 is filled between the PBT sleeve 54 and the bare fibers 51 and between the PBT sleeve 54 and the tensile fibers 52.

The residual length of the bare fiber 51 relative to the PBT sleeve is not less than 0.3%, the residual length of the PBT sleeve relative to the metal belt spiral pipe is not less than 0.5%, and the residual length of the optical unit 5 relative to the cable core is not less than 0.4%.

The outside of the reinforced layer 8 is provided with a high-strength rubber tensile layer 9 with tensile strength not less than 18MPa, hardness 77-83 and abrasion less than 5cm³。

The utility model has the advantages that:

the silica-based fiber paste in the optical unit has proper viscosity, high temperature resistance and good thermal stability, and effectively protects bare fibers from being influenced by temperature when short-time high temperature is generated due to short circuit of a cable or instantaneous high temperature is generated due to lightning stroke, thereby ensuring the transmission performance of optical fibers. The silica-based fiber paste and the tensile fiber act together to enable the bare fiber to be in a macroscopic 'suspension' state, when the cable is bent, the bare fiber has enough buffer space without being influenced by external force, and the integrity of the optical fiber is ensured. The PBT has excellent high-temperature stability and extremely low water absorption, and can maintain excellent dimensional stability in the cable manufacturing and running processes, so that the extra length of the optical fiber is not changed, and the reliability of the optical fiber is improved. Similarly, a plurality of strands of high-strength fibers are arranged on the periphery of the PBT sleeve, so that the PBT sleeve is in a macroscopic 'suspension' state, namely the center of the metal band spiral tube, the minimum ratio of the inner diameter of the metal band spiral tube to the outer diameter of the PBT sleeve is 1.2/1, and the larger the number of fibers which can be actually accommodated is, the better the minimum ratio is, and the larger the residual length of the PBT sleeve can be controlled. Similarly, by controlling the pay-off tension of the optical unit, and if necessary, zero tension pay-off, the optical unit also has a certain excess length relative to the cable core. By combining the three extra lengths, the total extra length can reach 1.2 percent, and the reliability of the optical fiber is obviously improved. In addition, the bare fiber and PBT sleeve have enough buffer space in the metal belt spiral tube, which ensures that the optical fiber is not influenced when the cable is bent and pulled. The 1.2% excess ensures fiber integrity even if locally involved.

The conductor monofilament is not more than 0.3mm, the flexibility is better after the stranding, the tensile resistance is improved, the weight of the cable can be reduced by 40% by adopting the aluminum alloy conductor, and the manufacturing cost is reduced by more than 50%. The insulating material is the ethylene propylene rubber of high strength high rigidity, has guaranteed the stability of cable, has improved the ability of cable resistance to deformation, and further high strength fibre rope knits the enhancement layer, has improved the pulling force that the cable can bear, and when the bending is pressed, stable in structure is unchangeable, avoids appearing the phenomenon that the sheath bulges and warp.

The utility model provides a cable for compound reel of optic fibre, contains power line, ground wire, neutral core and optical unit, and cable structure is reliable and stable, and resistant bending, tensile, anti-electromagnetic interference can realize intelligent supervision, work demands such as real-time temperature measurement, unmanned on duty, remote control. The cable is simple and convenient to install, optical cables do not need to be arranged independently, and the service life of the cable is long.

Above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the design of the present invention, equivalent replacement or change should be covered within the protection scope of the present invention.

Claims

1. The optical fiber composite cable for the winding drum is characterized by comprising a cable core, a reinforcing layer and a high-strength rubber tensile layer, wherein the reinforcing layer and the high-strength rubber tensile layer wrap the cable core from inside to outside, the cable core is formed by left-hand twisting of a plurality of power lines, a ground line, a neutral line and an optical unit, the twisting pitch ratio is 8-10, the optical unit is arranged in the center of the cable core, the plurality of power lines are adjacently arranged along the circumference of the optical unit, the ground line is arranged in a gap between two adjacent power lines, and the neutral line is arranged in a gap between the other two adjacent power lines;

2. The optical fiber composite reel cable according to claim 1, wherein the power core conductor, the ground conductor and the neutral conductor are formed by stranding a plurality of copper wires or aluminum alloy wires with the monofilament diameter of not more than 0.3 mm.

3. The optical fiber composite cable for winding drum according to claim 2, wherein the power core insulating layer, the ground core insulating layer and the neutral wire insulating layer are ethylene propylene rubber.

4. The optical fiber composite cable for the winding drum according to claim 1, wherein the fiber core comprises a plurality of bare fibers, tensile fibers, silicon-based fiber paste, and a PBT sleeve, the tensile fibers are disposed outside the bare fibers, the PBT sleeve wraps the bare fibers and the tensile fibers, and the silicon-based fiber paste is filled between the PBT sleeve and the bare fibers and the tensile fibers.

5. The fiber optic composite spool cable of claim 1, wherein the reinforcement layer is a high strength fiber braided reinforcement layer.