CN217606607U

CN217606607U - Low-cost aluminum alloy core photoelectric composite cable

Info

Publication number: CN217606607U
Application number: CN202123083081.0U
Authority: CN
Inventors: 沈小平; 曹朝硕; 王先革; 郑长亮; 戴伟斌; 高熙然; 贾卫楠
Original assignee: Tongding Interconnection Information Co Ltd
Current assignee: Tongding Interconnection Information Co Ltd
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-10-18
Anticipated expiration: 2031-12-09

Abstract

The invention provides a low-cost aluminum alloy core photoelectric composite cable, which comprises a cable core and a sheath structure outside the cable core; the sheath structure comprises a water-blocking belting layer, an inner sheath, an armor layer and an outer sheath which are sequentially coated on the outer side of the cable core from inside to outside; the cable core comprises an optical communication unit at the central position and a power unit arranged at the periphery of the optical communication unit; the optical communication unit comprises a loose tube and a plurality of optical fibers in the loose tube, and ointment is filled in the loose tube; the power unit comprises an aluminum alloy conductor and a conductor insulating layer coated on the outer side of the aluminum alloy conductor. The photoelectric composite cable provided by the invention integrates the functions of the optical cable and the cable, is more convenient for power transmission and optical fiber communication, is simple to install and lay, and reduces the construction period lengthening caused by secondary laying of the power cable and the optical cable and the high cost generated by construction and installation.

Description

Low-cost aluminum alloy core photoelectric composite cable

Technical Field

The invention belongs to the technical field of communication cables, and particularly relates to a low-cost aluminum alloy core photoelectric composite cable.

Background

With the vigorous development of communication business, telephone service in communication network service is in a steady growth trend, while data service is in an exponential growth situation, and multimedia such as voice, data and images need to be transmitted, so that larger network capacity and wider bandwidth are required. In order to adapt to the transmission requirement of larger capacity and bandwidth and the power supply requirement, a plurality of cables are usually used for solving the problem, the occupied space is large, and the adverse effect is brought to the safety and the reliability of the laying and the use. Particularly, the copper resource in China is extremely lack, and a large amount of import is relied on, so that the cost of adopting the copper core cable is continuously increased, and the resource replacement strategy is urgent under the advocation of energy conservation and consumption reduction in China. Accordingly, there is a need for improvements to existing communication cables.

Disclosure of Invention

In view of this, the invention provides an aluminum alloy core photoelectric composite cable with low cost to overcome the defects in the prior art.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a low-cost aluminum alloy core photoelectric composite cable comprises a cable core and a sheath structure outside the cable core; the sheath structure comprises a water-blocking belting layer, an inner sheath, an armor layer and an outer sheath which are sequentially coated on the outer side of the cable core from inside to outside; the cable core comprises an optical communication unit at the central position and a power unit arranged at the periphery of the optical communication unit; the optical communication unit comprises a loose tube and a plurality of optical fibers in the loose tube, and ointment is filled in the loose tube; the power unit comprises an aluminum alloy conductor and a conductor insulating layer coated on the outer side of the aluminum alloy conductor.

Further, the inner side of the waterproof belting layer is filled with waterproof paste.

Furthermore, the conductor insulating layer adopts a polyvinyl chloride insulating layer or a cross-linked polyethylene insulating layer.

Further, the inner sheath is made of high-density polyethylene.

Further, the armor layer is a galvanized steel strip armor layer.

Further, a reinforcing piece is further arranged in the loose sleeve.

Further, the outer sheath is made of high-density polyethylene.

Compared with the prior art, the invention has the following advantages:

the photoelectric composite cable provided by the invention integrates the functions of the optical cable and the cable, is more convenient in power transmission and optical fiber communication, is simple to install and lay, reduces the construction period lengthening caused by secondary laying of the power cable and the optical cable and the high cost generated by construction and installation, and simultaneously adopts the aluminum alloy material conductor to replace the traditional copper material conductor, thereby saving the copper resource and reducing the product cost.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the invention without limitation. In the drawings:

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

FIG. 2 is a schematic diagram of an optical communication unit according to the invention;

FIG. 3 is a schematic diagram of a power unit in the invention;

FIG. 4 is a schematic view of an embodiment of the present invention with a center seat;

fig. 5 is a schematic view of the optical communication unit of fig. 4 and an outer center seat portion thereof.

Detailed Description

It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.

The invention will be described in detail with reference to the following embodiments with reference to the attached drawings.

A low-cost aluminum alloy core photoelectric composite cable is shown in figures 1 to 3 and comprises a cable core and a sheath structure outside the cable core; the sheath structure comprises a water-blocking belting layer 1, an inner sheath 2, an armor layer 3 and an outer sheath 4 which are sequentially coated on the outer side of the cable core from inside to outside; the cable core comprises an optical communication unit 5 at the central position and a power unit 6 arranged at the periphery of the optical communication unit; the optical communication unit comprises a loose tube 7 and a plurality of optical fibers 8 in the loose tube, and ointment 9 is filled in the loose tube. In an alternative embodiment, a reinforcement member 12 is also provided within the loose tube. By way of example, the reinforcement may be steel wire. The reinforcing part can effectively enhance the tensile capacity of the optical fiber unit, and has better durability and more stable service performance.

The optical fiber is used as an information transmission carrier, and the factice plays a role in fixing the optical fiber, so that the optical fiber is prevented from generating relative displacement in the loose tube. The power unit includes an aluminum alloy conductor 10 and a conductor insulating layer 11 coated on the outside of the aluminum alloy conductor. The conductor insulating layer is a polyvinyl chloride insulating layer or a crosslinked polyethylene insulating layer.

For example, the aluminum alloy conductor adopts 8030 series aluminum alloy material conductor, and the performance index conductor monofilament tensile strength is 98-159N/mm ² The breaking elongation is more than or equal to 10 percent, and the repeated bending times are more than or equal to 25 times. The photoelectric composite cable is small in outer diameter, compact in structural layout, light in weight, small in occupied space, high in adaptability, strong in expandability and wide in product application range, and has good bending performance and good side pressure resistance.

In an alternative embodiment, the inner side of the water-blocking tape layer is filled with a water-blocking paste. The photoelectric integrated cable is filled with the water-blocking paste, the water-blocking tape is used as a cable wrapping tape, the water-blocking tape is extruded with a layer of high-density polyethylene inner sheath, the formed water-blocking structural design can completely meet the requirements of the working environment of an optical fiber unit, and the waterproof performance is excellent.

The inner sheath is made of high-density polyethylene sheath, and has good fire resistance and fire retardance. The outer sheath can also be made of a high-density polyethylene sheath, and spicy agents are added into the sheath materials, so that damage of rats and ants to the photoelectric composite cable can be effectively prevented, and the high-density polyethylene material belongs to an environment-friendly material and cannot pollute the surrounding environment. Generally, the armor layer is a galvanized steel strip armor layer, so that the pressure resistance of the photoelectric composite cable can be greatly enhanced, and the power unit and the optical communication unit can be better protected.

In order to improve the stability of the cable core, in an optional embodiment, as shown in fig. 4 and 5, a central seat 13 is extruded outside the optical communication unit, a plurality of limiting clamping grooves 14 are formed outside the central seat, and each power unit is partially or integrally embedded into the clamping grooves respectively. For example, the center seat can be made of polyvinyl chloride or low-smoke halogen-free flame-retardant polyolefin material, so that the pressure-resistant insulating property is good, and meanwhile, the center seat also has a certain buffering effect, so that the comprehensive cable has better mechanical impact resistance.

The photoelectric comprehensive cable provided by the invention is suitable for being used as a transmission line in a broadband access network system, integrates optical fibers and a transmission cable, can solve the problems of broadband access, equipment power consumption and signal transmission, more importantly avoids the problem of secondary wiring, and is convenient to maintain and repair. With the high-speed development of the cable industry technology, resource saving is greatly promoted, the aluminum alloy cable is scientifically and reasonably used in the field of low-voltage power cables of power systems, the excellent creep resistance, electrical performance and mechanical and physical performance of the aluminum alloy cable can be comparable to those of copper core cables, and the aluminum alloy cable has good corrosion resistance and economical efficiency and has strong superiority. The invention has low use cost and construction cost, and is mainly applied to important occasions requiring power transmission and optical fiber communication. Of course, the method can also be applied to the application condition with single requirement. Under the power transmission application working condition, the optical fiber can be reserved for the user, and secondary wiring is avoided. Under the working condition of network transmission requirements, the problem of power utilization of equipment in network construction can be solved, and repeated arrangement of power supply circuits is avoided.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.

Claims

1. The utility model provides a low-cost aluminum alloy core photoelectricity is synthesized cable which characterized in that: the cable comprises a cable core and a sheath structure outside the cable core; the sheath structure comprises a water-blocking belting layer, an inner sheath, an armor layer and an outer sheath which are sequentially coated on the outer side of the cable core from inside to outside; the cable core comprises an optical communication unit at the central position and a power unit arranged at the periphery of the optical communication unit; the optical communication unit comprises a loose tube and a plurality of optical fibers in the loose tube, and ointment is filled in the loose tube; the power unit comprises an aluminum alloy conductor and a conductor insulating layer coated on the outer side of the aluminum alloy conductor; the outer side of the optical communication unit is provided with a center seat, a plurality of limiting clamping grooves are formed in the outer side of the center seat, and each electric power unit is partially or integrally embedded into the clamping grooves.

2. The low-cost aluminum alloy core photoelectric composite cable according to claim 1, wherein: and the inner side of the water-blocking belting layer is filled with water-blocking paste.

3. The low-cost aluminum alloy core photoelectric composite cable according to claim 1, wherein: the conductor insulating layer is a polyvinyl chloride insulating layer or a crosslinked polyethylene insulating layer.

4. The low-cost aluminum alloy core photoelectric composite cable according to claim 1, wherein: the inner sheath is made of high-density polyethylene.

5. The low-cost aluminum alloy core photoelectric composite cable according to claim 1, wherein: the armor layer is a galvanized steel strip armor layer.

6. The low-cost aluminum alloy core photoelectric composite cable according to claim 1, wherein: and a reinforcing piece is also arranged in the loose sleeve.

7. The low-cost aluminum alloy core photoelectric composite cable according to claim 1, wherein: the outer sheath is made of high-density polyethylene.