CN213366248U

CN213366248U - Molded line concentric twisted photoelectric composite coaxial cable

Info

Publication number: CN213366248U
Application number: CN202022877244.1U
Authority: CN
Inventors: 汤浩; 曹殿琦; 李勇; 尚成锐; 罗静文; 钟佳杜
Original assignee: Avic Baosheng Sichuan Cable Co ltd
Current assignee: Avic Baosheng Sichuan Cable Co ltd
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2021-06-04
Anticipated expiration: 2030-12-04

Abstract

The utility model relates to a cable manufacture field, specific concentric transposition photoelectric composite coaxial cable of molded lines that says so, it includes the pine sleeve pipe and is located its inside optic fibre, it has fine cream to fill between the inboard and optic fibre of pine sleeve pipe, the outside embedding of pine sleeve pipe has the concentric transposition conductor of molded lines, the outer crowded system of the concentric transposition conductor of molded lines has the insulating layer, the system of twisting has many concentric conductors on the insulating layer, concentric conductor has the band outward around the package, the crowded system of band has the sheath outward. The molded line stranded conductor has smooth appearance and no burr, has small gaps among single lines, has less insulation potential defects when being applied to medium and low voltage cables, and simultaneously has very stable structure due to the adoption of high-precision molded lines and tight combination among copper monofilaments. The optical fiber protection device not only can reduce material consumption and improve transmission efficiency, but also can effectively protect the optical fiber therein from being damaged and excessively bent, and provide sufficient electric energy and optical signals for a longer distance.

Description

Molded line concentric twisted photoelectric composite coaxial cable

Technical Field

The utility model relates to a cable manufacture field, specific concentric hank photoelectricity of shaped wire compound coaxial cable that says so.

Background

The photoelectric composite cable is a novel cable combining an optical cable and a cable together, integrates an optical fiber and a transmission copper wire into a whole to serve as a transmission line, and can solve the problems of broadband access, equipment power consumption, signal transmission and the like. Because optical transmission and electric energy transmission belong to two different types of transmission modes, mutual interference can not occur in the transmission process, and the photoelectric composite cable can solve the problems of equipment power consumption and signal transmission at the same time, so that the photoelectric composite cable is widely applied. With the continuous promotion of power grid construction and the continuous development of communication networks, in intelligent and weak-current systems, particularly monitoring signals, traffic signals, railways, army national defense communication and equipment control systems, the environment is severe, the construction is difficult, and the power supply and signal transmission are difficult. And the emergence of photoelectricity composite optical cable has given construction and power supply, and signal transmission brings very big facility benefit, and power cord + optical fiber signal transmission close an organic whole, and the construction saves half, and photoelectricity composite optical cable possesses waterproof sun-proof frostproofing in addition, is fit for being used for the abominable place of outdoor environment, and the efficiency of construction improves greatly, labour saving and time saving province cost.

The prior patent is an invention patent with the application number of 201410653327.9 and the application date of 2014-11-18 named as 'composite leaky coaxial cable with embedded optical cable and manufacturing method thereof', and the technical scheme is as follows: the invention relates to a composite leaky coaxial cable with an embedded optical cable and a manufacturing method thereof, which not only maintains all performance advantages of the leaky coaxial cable, but also increases the performance advantages of the optical cable compared with a single leaky coaxial cable product. The composite leaky coaxial cable with the embedded optical cable is characterized in that: the cable comprises an optical cable, a corrugated copper pipe, a polyethylene foamed insulating layer, a slotted copper strip and a polyolefin outer sheath; the optical cable is wrapped in the copper pipe with the punched lines, the polyethylene foaming insulating layer is extruded and protected outside the copper pipe with the punched lines, the slotted copper belt is wrapped outside the polyethylene foaming insulating layer, and the polyolefin outer sheath is extruded and protected outside the slotted copper belt.

Although the above patent proposes a coaxial cable structure, the strength of the structure is insufficient, and the optical cable cannot provide sufficient protection, and there is a certain defect in practical application.

Disclosure of Invention

To the above-mentioned not enough in the prior art, this application provides a simple structure, and the intensity can be better satisfies the operation requirement, provides the concentric stranded photoelectricity composite coaxial cable of molded lines of long distance transport electric energy and light signal.

In order to achieve the technical effects, the technical scheme of the application is as follows:

the molded line concentric twisted photoelectric composite coaxial cable comprises a loose tube and optical fibers arranged in the loose tube, wherein a fiber paste is filled between the inner side of the loose tube and the optical fibers, a molded line concentric twisted conductor is embedded in the outer portion of the loose tube, an insulating layer is extruded outside the molded line concentric twisted conductor, a plurality of concentric conductors are twisted on the insulating layer, a wrapping tape is wound outside the concentric conductors, and a sheath is extruded outside the wrapping tape.

Furthermore, the molded line concentric stranded conductor is formed by spirally stranding one or more layers of single wires around a central wire core, the twisting directions of adjacent layers are opposite, and the twisting direction of the outermost layer is the right direction.

Further, the diameter range of the molded line equivalent single line of the molded line concentric stranded conductor is 2.00mm-6.00mm, the diameter of the molded line equivalent single line is the diameter of a round single line having the same sectional area as that of molded lines of various specifications, the size of the single line used by the molded line concentric stranded conductor can be effectively reflected, the sectional area range of the molded line stranded conductor of the molded line concentric stranded conductor is 100 mm-800 mm, the section of the molded line stranded conductor is in direct proportion to the specification and size of the molded line concentric stranded conductor, and the larger the size of the used molded line is, the more the number of the molded lines is, and the larger the outer diameter.

Further, the insulating layer is a crosslinked polyethylene layer.

Further, the concentric conductor is composed of a plurality of copper single wires or aluminum single wires.

Further, the sheath is a polyvinyl chloride layer.

The beneficial effect of this application:

1. the molded line stranded conductor has smooth appearance and no burr, has small gaps among single lines, has less insulation potential defects when being applied to medium and low voltage cables, and simultaneously has very stable structure due to the adoption of high-precision molded lines and tight combination among copper monofilaments. By adopting the structure, the material consumption can be reduced, the transmission efficiency can be improved, the optical fiber in the optical fiber can be effectively protected from being damaged and excessively bent, and sufficient electric energy and optical signals with longer distance can be provided.

2. With the concentric stranded conductor center of optical cable embedding molded lines in this application, for the optical cable provides a stable firm exterior structure, the intensity of optical cable itself has been strengthened to the change phase, has removed from adding central strengthening core in the optical cable from this, can add more optical fiber unit in the optical cable, provides stronger light signal. Meanwhile, the molded line concentric stranded conductor has a larger conductor section utilization rate, has the advantages of small diameter, excellent self-damping property and the like under the condition of the same sectional area, and also strengthens the structure and the strength of the cable, so that the laying range is wider.

Drawings

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

In the drawings: 1-optical fiber, 2-fiber paste, 3-loose tube, 4-molded line concentric stranded conductor, 5-insulating layer, 6-concentric conductor, 7-wrapping tape and 8-sheath.

Detailed Description

Example 1

The molded line concentric twisted photoelectric composite coaxial cable comprises a loose tube 3 and an optical fiber 1 positioned in the loose tube, wherein a fiber paste 2 is filled between the inner side of the loose tube 3 and the optical fiber 1, a molded line concentric twisted conductor 4 is embedded in the outer portion of the loose tube 3, an insulating layer 5 is extruded outside the molded line concentric twisted conductor 4, a plurality of concentric conductors 6 are twisted on the insulating layer 5, a wrapping tape 7 is wrapped around the concentric conductors 6, and a sheath 8 is extruded outside the wrapping tape 7.

The molded line concentric stranded conductor 4 is formed by spirally stranding one or more layers of single wires around a central wire core, the twisting directions of adjacent layers are opposite, and the twisting direction of the outermost layer is the right direction. The diameter range of the molded line equivalent single line of the molded line concentric stranded conductor 4 is 2.00mm-6.00mm, the diameter of the molded line equivalent single line is the diameter of a round single line having the same sectional area as that of each specification molded line, the size of the single line used by the molded line concentric stranded conductor 4 can be effectively reflected, the sectional area range of the molded line stranded conductor of the molded line concentric stranded conductor 4 is 100 mm-800 mm, the section of the molded line stranded conductor is in direct proportion to the specification and size of the molded line concentric stranded conductor 4, the larger the size of the used molded line is, the more the number of the molded lines is, and the larger the outside. As shown in table 1.

TABLE 1

Because high-precision molded lines are adopted for stranding, the gap between the molded lines is not more than 0.15mm, and the concentricity of the cable reaches 95% or more.

The insulating layer 5 is a crosslinked polyethylene layer. The concentric conductor 6 is composed of a plurality of copper element wires or aluminum element wires. The sheath 8 is a polyvinyl chloride layer.

The molded line stranded conductor has smooth appearance and no burr, has small gaps among single lines, has less insulation potential defects when being applied to medium and low voltage cables, and simultaneously has very stable structure due to the adoption of high-precision molded lines and tight combination among copper monofilaments. By adopting the structure, not only can the material consumption be reduced and the transmission efficiency be improved, but also the optical fiber 1 in the optical fiber can be effectively protected from being damaged and excessively bent, and sufficient electric energy and optical signals with longer distance can be provided. With the concentric stranded conductor center of optical cable embedding molded lines in this application, for the optical cable provides a stable firm exterior structure, the intensity of optical cable itself has been strengthened to the change mutually, has removed from adding central reinforced core in the optical cable from this, can add 1 unit of more optic fibre in the optical cable, provides stronger light signal. Meanwhile, the molded line concentric stranded conductor has a larger conductor section utilization rate, has the advantages of small diameter, excellent self-damping property and the like under the condition of the same sectional area, and also strengthens the structure and the strength of the cable, so that the laying range is wider.

Example 2

As shown in the figure, the novel cable is composed of an optical fiber 1, fiber paste 2, a loose tube 3, a molded line concentric stranded conductor 4, a crosslinked polyethylene insulating layer 5, a concentric conductor 6, a wrapping tape 7 and a polyvinyl chloride sheath 8. The loose tube 3 is a protective layer outside the optical fiber 1, and is a tube made of polypropylene or nylon. The optical fibers 1 are thin filaments drawn from quartz, which are fragile and easily broken, so that during production one or more optical fibers 1 are placed in a loose tube 3, which is then filled with a fiber paste 2, so that the optical fibers 1 can be loosely placed and protected from internal stress and external lateral pressure. Then embedding the core wire into a molded line concentric stranded conductor 4, extruding a cross-linked polyethylene insulating layer 5 to form a complete wire core, then stranding a concentric conductor 6 on the insulating layer 5, wherein the concentric conductor 6 consists of a plurality of copper single wires or aluminum single wires, wrapping a layer of wrapping tape 7 on the concentric conductor 6, and finally extruding a polyvinyl chloride sheath 8 for protection.

Claims

1. The utility model provides a compound coaxial cable of concentric hank photoelectricity of shaped line which characterized in that: the optical fiber cable is characterized by comprising a loose tube (3) and an optical fiber (1) positioned in the loose tube, wherein a fiber paste (2) is filled between the inner side of the loose tube (3) and the optical fiber (1), a molded line concentric stranded conductor (4) is embedded into the outer part of the loose tube (3), an insulating layer (5) is extruded outside the molded line concentric stranded conductor (4), a plurality of concentric conductors (6) are stranded on the insulating layer (5), a wrapping band (7) is wrapped outside the concentric conductors (6), and a sheath (8) is extruded outside the wrapping band (7).

2. The molded-line concentrically-twisted photoelectric composite coaxial cable according to claim 1, comprising: the molded line concentric stranded conductor (4) is formed by spirally stranding one or more layers of single wires around a central wire core, the twisting directions of adjacent layers are opposite, and the twisting direction of the outermost layer is the right direction.

3. The molded-line concentrically-twisted photoelectric composite coaxial cable according to claim 2, wherein: the range of the profile equivalent single wire diameter of the profile concentric stranded conductor (4) is from 2.00mm to 6.00mm, the range of the profile stranded conductor cross-sectional area of the profile concentric stranded conductor (4) being from 100mm to 800 mm.

4. The molded-line concentrically-twisted photoelectric composite coaxial cable according to claim 1, comprising: the insulating layer (5) is a crosslinked polyethylene layer.

5. The molded-line concentrically-twisted photoelectric composite coaxial cable according to claim 1, comprising: the concentric conductor (6) is composed of a plurality of copper single wires or aluminum single wires.

6. The molded-line concentrically-twisted photoelectric composite coaxial cable according to claim 1, comprising: the sheath (8) is a polyvinyl chloride layer.