CN103413595A

CN103413595A - Photoelectric composite cable

Info

Publication number: CN103413595A
Application number: CN2013103218691A
Authority: CN
Inventors: 孙义兴; 许建国; 彭志勇; 赵坤祥; 李涛
Original assignee: Chengdu Hengtong Optical Communication Co Ltd
Current assignee: Chengdu Hengtong Optical Communication Co Ltd
Priority date: 2013-07-29
Filing date: 2013-07-29
Publication date: 2013-11-27

Abstract

The invention relates to a photoelectric composite cable which comprises a center conductor (1), optical fibers (2), an inner protecting bush (3), a ground layer (4) and an outer protecting bush (5). The center conductor (1) is arranged at the axis inside the inner protecting bush (3), the two optical fibers (2) are further symmetrically arranged inside the inner protecting bush (3), the ground layer (4) and the outer protecting bush (5) sequentially cover the outer side of the inner protecting bush (3), the ground layer (4) is a bunch-stranded copper wire which is bunch-stranded by a plurality of strands of copper wire bodies, the ground layer (4) is obliquely wrapped, and the wrapping pitch is 10-15 times of the diameter of the center conductor (1). The photoelectric composite cable has the following advantages that communication equipment can be prevented from being damaged by thunder and lightning, optical cables and cables are coaxially composited, therefore, the cables and the optical cables can be synchronously installed, cost is saved, and construction operation is reduced.

Description

A kind of optoelectronic composite cable

Technical field

The present invention relates to optical cable, particularly a kind of optoelectronic composite cable.

Background technology

In height or mountain area, with a varied topography and work under bad environment, the equipment of base station, frontier defense communication apparatus, mountain area communication apparatus easily suffer the infringement of thunder and lightning weather.Because cable likely is struck by lightning, cause the heavy losses of communications facility, lightning protection becomes the more and more valued requirement that optical cable is used in these areas.Simultaneously, use respectively cable and optical cable to transmit electric power and signal of communication, not only laying construction trouble, and the multiple waste that has caused secondary to lay.

Along with the development of communication industry, communication network from single speech business to voice, the full-service integrated communication direction message development of data, video several data business, the construction of optical-fiber network is from backbone network, core net to metropolitan area network, Access Network development.And, due to the cause of operating frequency, still there are many covering problems.Remote radio, as a kind of novel distributed network replace mode, efficiently solves the many covering problems that cause due to the low cause of operating frequency.But the cable for the remote radio of base station, need transmitting optical signal and electric power simultaneously, and traditional solution is to lay respectively as the optical cable of optical signal transmission with as the cable of electric power transfer, this not only brings difficulty to construction, use and construction cost have also been increased, and because the diameter of optical cable is less, tensile strength is lower, lays very easily and breaks separately.

Chinese patent application number: 201020655801.9 disclose a kind of central tube-type optic/electric composite cable, water blocking layer is arranged between loose sleeve pipe and composite steel-plastic belt, and copper conductor is arranged on oversheath inside, such structure makes the waterproof of composite rope only be confined to fiber section, and the part of electric power transfer can't guarantee, this brings no small potential safety hazard to electric power transfer undoubtedly.

Chinese patent application number: 201220363366.1 disclose a kind of photoelectricity mixing ripple cable; comprise optical communication element, communication unit and oversheath; this optical communication element comprises at least one pair of fiber cores; this communication unit comprises at least one electronic communication link; its carrying of the ripple cable of this structure and resistance to tension are poor; the cable major part is exposed in extraneous air, and after long-term exposing to the sun and rain, the protective effect that the outer jacket of cable plays is little.

Summary of the invention

The object of the invention is to overcome the shortcoming of prior art, a kind of optoelectronic composite cable that has the thunder-lightning function and formed by coaxial cable and optical fiber combination is provided.

Purpose of the present invention is achieved through the following technical solutions: a kind of optoelectronic composite cable, it comprises center conductor, optical fiber, inner sheath, ground plane and oversheath, described inner sheath internal axis position is provided with center conductor, described inner sheath inside also is symmetrically arranged with two optical fiber, and the described inner sheath outside is coating ground plane and oversheath successively.

Described ground plane is the bundle strand copper wire of stranded copper wire bundle strand, and oblique wrapped, and lay of lapping is 10～15 times of center conductor diameter, and ground plane, machine room ground connection, causes damage to communication equipment to avoid thunder and lightning.

Gap-fill between described inner sheath inside and center conductor, optical fiber has dielectric.

The present invention has the following advantages: the present invention adopts coaxial cable and optical fiber combination to form, and transmission of electric signals and light signal, synchronously realize installing cables and optical cable respectively, reduces construction cost-saving; Invention simultaneously is provided with ground plane, can effectively conduct instantaneous high pressure, avoids thunder and lightning to cause damage to communication equipment, can meet in the severe workplace normal operation of environment, strong, the many performance of adaptive capacity to environment, low cost.

The accompanying drawing explanation

Fig. 1 is structural representation of the present invention.

In figure: 1-center conductor, 2-optical fiber, 3-inner sheath, 4-ground plane, 5-oversheath.

Embodiment

The present invention will be further described below in conjunction with accompanying drawing, but protection scope of the present invention is not limited to the following stated.

As shown in Figure 1, a kind of optoelectronic composite cable, it comprises center conductor 1, optical fiber 2, inner sheath 3, ground plane 4 and oversheath 5, described inner sheath 3 internal axis positions are provided with center conductor 1, described inner sheath 3 inside also are symmetrically arranged with two optical fiber 2, and described inner sheath 3 outsides are coating ground plane 4 and oversheath 5 successively.

Described ground plane 4 is bundle strand copper wires of stranded copper wire bundle strand, and oblique wrapped, and its lay of lapping is 10～15 times of center conductor diameter, and ground plane 5, machine room ground connection, causes damage to communication equipment to avoid thunder and lightning.

Gap-fill between described inner sheath 3 inside and center conductor 1, optical fiber 2 has dielectric.

Between oversheath 5 and inner sheath 3, be provided with ground plane 4, ground plane 4 is ground connection in any place, in the middle of practical application, ground plane 4, having people or unmanned machine room earthing effect better, can effectively be conducted to instantaneous high pressure.Another important feature of the present invention is that the photoelectricity that adopts coaxial cable and the optical fiber 2 of at least two to combine is compound, realizes synchronous cabling and optical cable.

The correlated performance of optical cable meets communication industry standard YD/T901-2001 communication optoelectronic composite cable, the oversheath of optoelectronic composite cable is without the visible crackle of eyesight, more than the tension load of composite rope can reach 1200N, its minimum bending radius was 120mm, and can in the environment of-40 ℃～80 ℃, use; In withstand voltage test, add and hold under the condition that voltage is the 1500V AC power, 1 minute duration, insulator is without punch-through.

Claims

1. optoelectronic composite cable, it is characterized in that: it comprises center conductor (1), optical fiber (2), inner sheath (3), ground plane (4) and oversheath (5), described inner sheath (3) internal axis position is provided with center conductor (1), described inner sheath (3) inside also is symmetrically arranged with two optical fiber (2), and described inner sheath (3) outside is coating ground plane (4) and oversheath (5) successively.

2. a kind of optoelectronic composite cable according to claim 1 is characterized in that: described ground plane (4) is the bundle strand copper wire of stranded copper wire bundle strand, and oblique wrapped, and lay of lapping is 10～15 times of center conductor (1) diameter.

3. a kind of optoelectronic composite cable according to claim 1 is characterized in that: the gap-fill between the inner and center conductor (1) of described inner sheath (3), optical fiber (2) has dielectric.