CN212809845U

CN212809845U - Optical fiber composite cable

Info

Publication number: CN212809845U
Application number: CN202021868792.1U
Authority: CN
Inventors: 杨凯; 张同义
Original assignee: Chongqing Yan Brand Wire & Cable Co ltd
Current assignee: Chongqing Yan Brand Wire & Cable Co ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-03-26
Anticipated expiration: 2030-08-31

Abstract

An optical fiber composite cable relates to the technical field of cables and comprises: a housing; the cable core is formed by twisting a plurality of wire core units and is arranged in the shell, and a first optical fiber unit is arranged at the center of the cable core; the filler is filled between the cable core and the inner wall of the shell; the filler is of a honeycomb structure used for improving the structural strength of the cable, second optical fiber units are arranged in the filler between two adjacent wire core units, and the type of the first optical fiber unit is different from that of the second optical fiber unit; the structure of the filler is set to be a honeycomb structure, so that the filler can disperse and bear external force, the bearing capacity of the filler is improved, the cable core and the second optical fiber unit can be better protected from being extruded by the external force to deform, and meanwhile, the second optical fiber unit is positioned in the filler and also protects the second optical fiber unit from rubbing with the cable core; the second optical fiber unit is arranged in the filler, so that the types of optical fibers in a single cable are diversified, the application range of the cable is expanded, and the cost is reduced.

Description

Optical fiber composite cable

Technical Field

The utility model relates to the technical field of cables, concretely relates to optical fiber composite cable.

Background

With the increase of national power grids and southern power grids on the construction of smart power grids, high-voltage and ultrahigh-voltage high-capacity transmission lines are vigorously constructed on a backbone network, and Power Fiber To The Home (PFTTH) is also pushed at a user side. The power fiber-to-the-home mode means that a fiber composite medium-voltage cable and a low-voltage cable are adopted in a low-voltage communication access network, optical fibers are laid along with a low-voltage power line, the purpose that an intelligent electric meter is connected to the home is achieved, and services such as power utilization information collection, intelligent power utilization bidirectional interaction, multi-network fusion and the like are borne by the aid of a passive optical network technology.

The construction of the smart power grid provides new requirements for traditional optical cables and power transmission, and the optical fiber composite medium-voltage and low-voltage cables are used as important products of user access ends in the construction of the smart power grid, and are integrated with optical fiber communication and power transmission, so that the requirements of information, automation and interaction of the smart power grid are met, the advantages are strong, the application is wide, and safe and reliable guarantee is provided for the construction of the smart power grid.

The optical fiber composite medium and low voltage cable can realize multi-network fusion and is a main force of the cable of the intelligent power grid. The optical fiber composite medium and low voltage cable is one of important cable products in the construction of an intelligent power grid, integrates the functions of communication and power, can effectively realize multi-network fusion of a telecommunication network, a power transmission network, a television network, the Internet and the like, reduces the cost of network construction, and is one of the multi-network fusion products with the highest cost performance at present.

The medium-voltage intelligent frequency conversion cable comprises a cable core, an isolation layer coated on the periphery of the cable core and a filler filled between the cable core and a protection layer, wherein the cable core is formed by twisting three cable core units, and each cable core unit is formed by sequentially coating a protection layer, a metal shielding layer, an insulation layer and a conductor shielding layer on a conductive cable core from outside to inside; the protective layer is sequentially coated with a wrapping tape layer, an armor layer and a sheath layer from inside to outside; and an optical fiber unit is arranged at the central position of the cable core. However, the optical fiber units arranged in the cable are single in type, so that the use limitation of the cable is large, meanwhile, the cable core in the cable is easy to twist in the protective layer in the winding process of the cable, and the conductive wire core is easy to break due to long-time twisting, so that the use is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses use singly according to current optical fiber composite cable, the easy torsional problem of cable core, the utility model discloses a following technical scheme:

an optical fiber composite cable comprising:

a housing;

the cable core is formed by twisting a plurality of wire core units and is arranged in the shell, and a first optical fiber unit is arranged at the center of the cable core; and

the filler is filled between the cable core and the inner wall of the shell;

the filler is arranged to be a honeycomb structure used for improving the structural strength of the cable, second optical fiber units are arranged in the filler between every two adjacent wire core units, and the type of each first optical fiber unit is different from that of each second optical fiber unit.

Compared with the prior art, the utility model discloses following beneficial effect has: the structure of the filler is set to be a honeycomb structure, so that the filler can disperse and bear external force, the bearing capacity of the filler is improved, the cable core and the second optical fiber unit can be better protected from being extruded by external force to deform and not easy to twist in the shell, and meanwhile, the second optical fiber unit is positioned in the filler and can also be protected from rubbing with the cable core; the second optical fiber unit is arranged in the filler, so that the types of optical fibers in a single cable are diversified, the application range of the cable is expanded, and the cost is reduced.

Preferably, each core unit is formed by sequentially coating an outer shielding layer, an insulating layer and an inner shielding layer on the conductive core from outside to inside, and the outer wall of the outer shielding layer of each core unit is abutted against the inner wall of the shell.

Preferably, the shell comprises an inner cushion layer, an armor layer and an outer protection layer which are sequentially coated from inside to outside, and the inner wall of the outer protection layer is abutted to the outer walls of the outer shielding layers of the three wire core units.

Preferably, the number of the core units and the number of the second optical fiber units are three.

Preferably, the inner pad layer is made of flame-retardant polyvinyl chloride material.

Preferably, the filler is a polypropylene filled rope.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a cross-sectional view of an embodiment of the present invention.

The numbers in the figures are in order: 1. a housing; 11. an outer protective layer; 12. an armor layer; 13. an inner cushion layer; 14. a filler; 2. a conductive wire core; 3. an inner shield layer; 4. an insulating layer; 5. an outer shield layer; 6. a first optical fiber unit; 7. a second optical fiber unit.

Detailed Description

In order to make the utility model realize that technical means, creation characteristics, achievement purpose and effect are clearer and easily understand, it is right to combine below the figure and the detailed implementation mode the utility model discloses do further explanation:

as shown in fig. 1, an embodiment of the present invention provides an optical fiber composite cable, including: a housing 1;

the cable core is formed by twisting a plurality of wire core units and is arranged in the shell 1, and a first optical fiber unit 6 is arranged at the center of the cable core; and a filler 14 filled between the cable core and the inner wall of the shell 1;

the filler 14 is a honeycomb structure for improving the structural strength of the cable, the second optical fiber units 7 are arranged in the filler 14 between two adjacent wire core units, and the type of the first optical fiber unit 6 is different from that of the second optical fiber unit 7.

The structure of the filler 14 is set to be a honeycomb structure, so that the filler 14 can disperse and bear external force, the bearing capacity of the filler 14 is improved, the cable core and the second optical fiber unit 7 can be better protected from being extruded by the external force to deform and not easy to twist in the shell 1, and meanwhile, the second optical fiber unit 7 is positioned in the filler 14 and also protects the second optical fiber unit 7 from rubbing with the cable core; the second optical fiber unit 7 is arranged in the filler 14, so that the types of optical fibers in a single cable are diversified, the application range of the cable is expanded, and the cost is reduced; and the filler 14 is a polypropylene filling rope, so that the roundness of the cable can be ensured, and the cable does not have hygroscopicity, is not easy to shrink, is not corroded and has a flame retardant effect.

The utility model discloses a first optical fiber unit 6's model is GYDTY53, and the model of second optical fiber unit 7 is GYDGTZY, because first optical fiber unit 6 is different with second optical fiber unit 7 model; the optical fiber unit with the optical fiber connector has the advantages that various optical fiber units with different functions can be arranged in the same cable, the applicability of the cable is wider, the utilization rate of the cable is improved, and the cost is reduced.

As shown in fig. 1, according to another embodiment of the present invention, the optical fiber composite cable further optimizes the core units included therein, each core unit is formed by sequentially coating an outer shielding layer 5, an insulating layer 4 and an inner shielding layer 3 on the conductive core 2 from outside to inside, and the outer wall of the outer shielding layer 5 of each core unit is abutted against the inner wall of the housing 1; because a plurality of sinle silk units set up in filler 14 with the mode of transposition, and the outer wall of the outer shielding layer 5 of each sinle silk unit all offsets with casing 1 inner wall, consequently, the honeycomb structure through filler 14 and the frictional force effect of offsetting production between the outer shielding layer 5 of sinle silk unit and the casing 1 inner wall, make when the cable is convoluteed or is buckled, the sinle silk unit can not take place the displacement or rotate in casing 1, make the sinle silk unit not take place the friction with first optical fiber unit 6 and second optical fiber unit 7, thereby the life of cable has been improved.

As shown in fig. 1, according to another embodiment of the present invention, the optical fiber composite cable further includes a housing 1, the housing 1 includes an inner cushion layer 13, an armor layer 12, and an outer protection layer 11, which are sequentially covered from inside to outside, and an inner wall of the outer protection layer 11 is against outer walls of outer shielding layers 5 of three core units; through the three-layer protection of the outer protection layer 11, the armor layer 12 and the inner cushion layer 13, the cable can reduce the damage to the core unit, the first optical fiber unit 6 and the second optical fiber unit 7 to the maximum extent under the condition that the cable is extruded, collided or bent by external force.

As shown in fig. 1, according to another embodiment of the present invention, an optical fiber composite cable is further optimized for the core unit and the second optical fiber unit 7 included therein, and the size of the inner space of the cable, the size of the space occupied by the core unit and the size of the filling space of the filler 14 are considered comprehensively, and preferably, the core unit and the second optical fiber unit 7 are all three.

As shown in fig. 1, according to another embodiment of the present invention, the optical fiber composite cable further includes an inner layer 13, and since polyvinyl chloride is cheap, the insulating property is good, the flame retardancy is good, and preferably, the inner layer 13 is made of flame retardant polyvinyl chloride; the cable has good flame retardant property, and the cost is reduced.

The utility model discloses an application principle does: the utility model discloses when manufacturing the cable, be equipped with second optical fiber unit 7 in the filler 14 between the core unit, make the optic fibre kind pluralism in the single cable, enlarged the range of application of cable, the cost is reduced; the structure of the filler 14 is set to be a honeycomb structure, so that the filler 14 can better disperse and bear external force, the bearing capacity of the filler 14 is improved, the core unit, the first optical fiber unit 6 and the second optical fiber unit 7 can be better protected from being deformed due to extrusion of the external force and not easy to twist in the shell, and friction between the second optical fiber unit 7 and the cable core is prevented; meanwhile, through the three-layer protection of the outer protection layer 11, the armor layer 12 and the inner cushion layer 13, the cable can reduce the external force damage of the core unit, the first optical fiber unit 6 and the second optical fiber unit 7 to the maximum extent under the condition that the cable is extruded, collided or bent by external force; and adopt the polyvinyl chloride with low price, good insulating properties, good fire resistance to make inner cushion layer 13, reduce cost while guaranteeing that the cable has good fire resistance.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. An optical fiber composite cable comprising:

a housing (1);

the cable core is formed by twisting a plurality of wire core units and is arranged in the shell (1), and a first optical fiber unit (6) is arranged at the center of the cable core; and

a filler (14) filled between the cable core and the inner wall of the shell (1); it is characterized in that the preparation method is characterized in that,

the filler (14) is of a honeycomb structure used for improving the structural strength of the cable, the second optical fiber units (7) are arranged in the filler (14) between every two adjacent wire core units, and the type of the first optical fiber unit (6) is different from that of the second optical fiber unit (7).

2. The optical fiber composite cable according to claim 1, wherein each core unit is formed by sequentially covering the conductive core (2) with an outer shielding layer (5), an insulating layer (4) and an inner shielding layer (3) from outside to inside, and the outer wall of each outer shielding layer (5) abuts against the inner wall of the shell (1).

3. The optical fiber composite cable according to claim 2, wherein the housing (1) comprises an inner cushion layer (13), an armor layer (12) and an outer protective layer (11) which are sequentially coated from inside to outside, and the inner wall of the outer protective layer (11) is abutted against the outer walls of the outer shielding layers (5).

4. An optical fibre composite cable according to claim 3, characterized in that there are three of said core units and said second optical fibre units (7).

5. An optical fibre composite cable according to claim 4, wherein the inner layer (13) is of flame retardant polyvinyl chloride material.

6. An optical fibre composite cable according to any one of claims 1 to 5, characterized in that the filler (14) is a polypropylene filler rope.