CN114664486B

CN114664486B - Anti-biting optical cable

Info

Publication number: CN114664486B
Application number: CN202210194345.XA
Authority: CN
Inventors: 魏国庆
Original assignee: Hangzhou Futong Communication Technology Co Ltd
Current assignee: Hangzhou Futong Communication Technology Co Ltd
Priority date: 2022-03-01
Filing date: 2022-03-01
Publication date: 2023-07-25
Anticipated expiration: 2042-03-01
Also published as: CN114664486A

Abstract

The invention belongs to the field of optical cables, and particularly relates to an anti-biting optical cable. It comprises the following steps: the cable comprises a cable core, a buffer layer, a conductive layer, an outer sheath and an induction layer; the cable core is formed by bundling and fixing a plurality of optical fiber wires by a non-woven fabric wrapping belt, and the buffer layer is coated outside the cable core; the conducting layer is arranged outside the buffer layer and is composed of a plurality of conducting wires which are uniformly arranged on the circumference of the optical cable; the outer sheath is coated on the outer surface of the conductive layer; the outer surface of the outer sheath is provided with an induction layer, the induction layer is a metal film, and the outer surface of the induction layer is provided with gravure in an array manner. The optical cable can improve the anti-biting effect of the optical cable in an electrical stimulation mode; the environmental electric field generated by the conductive layer in the optical cable is effectively and fully utilized; the anti-biting effect can be maintained effectively for a long time.

Description

Anti-biting optical cable

Technical Field

The invention belongs to the field of cables, and particularly relates to an anti-biting optical cable.

Background

In recent years, with the important development of optical fiber communication and long-distance power transmission in China, the use requirement of optical cables with optical and electrical transmission is greatly increased. A new series of problems are also created with this.

Such as the traditional optical cable, does not have good anti-biting effect. In traditional optical cable and cable, can all make optical cable and cable have the anti-bite effect that produces relatively excellence through special structure setting, but to the optical cable, because the layering of structure distributes and inside complicacy for original anti-bite mode no longer is suitable for. In particular, in the conventional physical protection form, the provision of a reinforced armor structure on the outer surface thereof greatly limits the layout of the optical wires therein.

The effect is limited and the environmental pollution is easily caused by the relatively low-requirement chemical anti-biting mode.

Disclosure of Invention

The invention provides an anti-biting optical cable, which aims to solve the problems that the existing optical cable does not have good anti-biting performance or the existing anti-biting mode is easy to cause environmental pollution and the like.

The invention aims at:

1. ensuring that the optical cable has good anti-biting performance;

2. the optical cable can be ensured to have a larger space for designing and arranging the optical wires;

3. can effectively avoid the problem of environmental pollution.

In order to achieve the above purpose, the present invention adopts the following technical scheme.

An anti-biting optical cable comprising:

the cable comprises a cable core, a buffer layer, a conductive layer, an outer sheath and an induction layer;

the cable core is formed by bundling and fixing a plurality of optical fiber wires by a non-woven fabric wrapping belt, and the buffer layer is coated outside the cable core;

the conducting layer is arranged outside the buffer layer and is composed of a plurality of conducting wires which are uniformly arranged on the circumference of the optical cable;

the outer sheath is coated on the outer surface of the conductive layer;

the outer surface of the outer sheath is provided with an induction layer, the induction layer is a metal film, and the outer surface of the induction layer is provided with gravure in an array manner.

As a preferred alternative to this,

the optical fiber line is a single optical fiber or an optical fiber bundle formed by hooking a plurality of optical fibers.

As a preferred alternative to this,

the metal film of the induction layer is a copper film or a copper-silver alloy film or a copper-aluminum alloy film.

As a preferred alternative to this,

the induction layer is prepared by spraying, vapor plating, chemical dip plating or electroplating.

As a preferred alternative to this,

the buffer layer is provided with a plurality of long round grooves;

the long round grooves are uniformly formed in the circumferential direction of the cable core.

As a preferred alternative to this,

a hollow elastic tube is arranged in the oblong slot.

As a preferred alternative to this,

the outer wall of the hollow elastic tube is abutted against two ends of the long circular groove along the radial direction of the optical cable, and is at most contacted with the arc-shaped side wall on one side of the long circular groove at the same time in the circumferential direction of the optical cable.

As a preferred alternative to this,

the long direction of the long circular groove is perpendicular to the radial direction of the optical cable.

As a preferred alternative to this,

the gravure depth is 0.5 to 1.0mm.

The beneficial effects of the invention are as follows:

1) The anti-biting effect of the optical cable is greatly improved in an electric stimulation mode;

2) The environmental electric field generated by the conductive layer in the optical cable is effectively and fully utilized;

3) The anti-biting effect can be effectively maintained for a long time;

4) The structure is simple, and the optical cable can be ensured to still have a larger space for layout of the optical wires;

5) Can avoid the problems of environmental pollution and the like caused by the traditional chemical anti-biting mode.

Description of the drawings:

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

FIG. 2 is a schematic diagram of the biting deformation of the optical cable of the present invention;

in the figure: 100 cable cores, 101 optical fiber wires, 102 non-woven fabric belts, 200 buffer layers, 201 long round grooves, 202 hollow elastic tubes, 300 conductive layers, 301 conductive wires, 400 outer jackets, 401 induction layers and 4011 gravure.

The specific embodiment is as follows:

the invention is described in further detail below with reference to specific examples and figures of the specification. Those of ordinary skill in the art will be able to implement the invention based on these descriptions. In addition, the embodiments of the present invention referred to in the following description are typically only some, but not all, embodiments of the present invention. Therefore, all other embodiments, which can be made by one of ordinary skill in the art without undue burden, are intended to be within the scope of the present invention, based on the embodiments of the present invention.

In the description of the present invention, it should be understood that the terms "thickness," "upper," "lower," "horizontal," "top," "bottom," "inner," "outer," "circumferential," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present invention. In the description of the present invention, the meaning of "a plurality" means at least two, for example, two, three, etc., unless explicitly defined otherwise, the meaning of "a number" means one or more.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

The raw materials used in the examples of the present invention are all commercially available or available to those skilled in the art unless specifically stated otherwise; the methods used in the examples of the present invention are those known to those skilled in the art unless specifically stated otherwise.

Example 1

An anti-biting optical cable as shown in fig. 1, which specifically comprises:

the cable comprises a cable core 100, a buffer layer 200, a conductive layer 300, an outer sheath 400 and an induction layer 401;

the cable core 100 is formed by bundling and fixing a plurality of optical fiber wires 101 by a non-woven fabric bag belt 102, wherein the optical fiber wires 101 are optical fiber bundles formed by single optical fibers or a plurality of optical fibers and are used for conveying and transmitting optical signals so as to realize the communication function of the optical cable;

the buffer layer 200 is used for realizing mechanical protection of the cable core 100, and is provided with a buffer structure to avoid the problem that the external acting force directly acts on the cable core 100, so that the optical fiber line 101 generates transmission loss and even the broken core cannot transmit signals;

the conductive layer 300 is arranged outside the buffer layer 200 and is composed of a plurality of conductive wires 301 which are uniformly arranged on the circumference of the optical cable, wherein the conductive wires 301 are conventional copper wires or copper-aluminum alloy conductive wires and are used for realizing power transmission;

the outer sheath 400 is coated on the outer surface of the conductive layer 300, and is used for realizing mechanical protection of the whole optical cable, so as to avoid damage to the conductive wire 301 in the conductive layer 300 and/or damage to the optical fiber wire 101 in the cable core 100 caused by external environment;

in the above structure, the two conductive and optical signal transmission functional layers are orderly arranged in a staggered manner, so that interference generated between the conductive and optical signal transmission functional layers is avoided, and particularly under the condition of high-voltage power transmission, the conductive wire 301 and the optical fiber wire 101 are too close to each other, so that certain influence on optical signal transmission is easily generated;

on the other hand, the arrangement of the outer sheath 400 can realize the basic mechanical protection of the cable, avoid conventional environmental corrosion, collision and extrusion and the like, and the conductive layer 300 is arranged outside the buffer layer 200, so that secondary protection is not formed on the conductive layer by the buffer layer 200, the characteristic that the conductive wire 301 in the conductive layer 300 has better mechanical property is utilized, the conductive wire is used as a reinforcing piece and a unique buffer structure to realize the protection of the inner cable core 100, more importantly, because the special utilization of the environmental electric field generated by the conductive layer 300 is needed, the interference of the environmental electric field generated by the conductive layer 300 is easy to generate by the buffer layer 200 arranged outside the conductive layer 300, and especially, the influence is more obvious when the buffer layer 200 needs to be arranged into a special non-solid round structure, so that the arrangement position of the buffer layer 200 has very special meaning and cannot be simply adjusted for the scheme of the invention;

the outer surface of the outer sheath 400 of the present invention is prepared into a metal film by any conventional method such as spraying, vapor plating, chemical immersion plating or electroplating, and the metal film is preferably made of a soft and relatively excellent conductive metal material such as copper, copper-silver alloy, copper-aluminum alloy, etc., so as to form the induction layer 401;

the induction layer 401 is provided with a plurality of intaglio printing 4011 which are distributed in an array order and are recessed inwards along the radial direction on the outer surface by conventional means such as embossing, and the depth of the intaglio printing 4011 is 0.5 to 1.0mm;

the gravure can form induced electricity under the action of an environmental electric field generated by the conductive layer 300, compared with a flat surface, the gravure 4011 can cause high-low potential difference in the inductive layer 401, and a charge accumulation phenomenon similar to tip discharge is formed at the gravure 4011, so that static electricity is instantly released when a rodent bites an optical cable, and obvious electric stimulation is formed for the rodent, so that the rodent is driven and prevented from biting the optical cable;

in addition, because the induced electricity generated by the structure is based on the environmental electric field generated by the conductive layer 300 for transmitting electricity of the optical cable, as long as the optical cable is still in normal use and the conductive layer 300 can normally radiate the electric field to the surrounding environment, the structure does not need to carry out extra maintenance and has the effect of permanently driving rodents to avoid biting.

Example 2

Based on example 1:

as shown in fig. 1, a plurality of long circular grooves 201 are uniformly formed in the circumferential direction of the cable core 100, the long direction of the long circular grooves 201 is perpendicular to the radial direction of the optical cable, and a hollow elastic tube 202 is correspondingly arranged in each long circular groove 201;

the outer wall of the hollow elastic tube 202 is abutted against two ends of the long circular groove 201 along the radial direction of the optical cable and is at most contacted with the arc-shaped side wall of one side of the long circular groove at the same time in the circumferential direction of the optical cable, namely the actual hollow elastic tube 202 is loosely arranged in the long circular groove 201 and can move along the length direction of the long circular groove;

the arrangement of the long circular groove 201 can increase the relative displacement of the sensing layer 401 after being stressed, and the arrangement of the hollow elastic tube 202 can ensure the roundness support and is beneficial to the subsequent elastic recovery;

the common optical cable adopts the solid buffer layer, the cable core 100 is easy to be extruded and damaged in the biting process, the structure of the common solid buffer layer 200 is improved, the buffer layer 200 which is semi-hollow and provided with the long round groove 201 is formed, and in order to ensure the roundness supporting effect of the buffer layer 200 and reduce the deformation of the buffer layer 200 after being stressed, the hollow elastic tube 202 is arranged in the long round groove 201, so that the whole optical cable can be buffered and promoted to deform and reset after being bitten, the optical fiber part of the cable core 100 is prevented from being directly extruded, and meanwhile, the experiment shows that the biting prevention effect of the optical cable can be further enhanced after the buffer layer 200 with the structure is arranged;

because the original anti-biting effect is only generated by the electric field effect of the conductive layer 300 and the potential difference formed by the cooperation of the point-like discharge, the main reason is that static charge forms loop discharge after the rodents are bitten, so that electric stimulation is generated on the rodents to prevent the rodents from being bitten, but the static charge is very easy to release under the condition of high humidity such as rainy and snowy weather, so that the actual anti-biting effect is reduced, after the buffer layer 200 structure is arranged, the relative movement amount of the sensing layer 401 is increased due to the action of a strong electric field, the sensing layer 401 moves in the biting process to generate electromagnetic induction phenomenon, weak current is generated by virtue of a magnetic field to replace the original static charge electric stimulation effect, so that the anti-biting effect can be kept good in rainy and snowy weather;

specifically, as shown in fig. 2, the optical cable generates an F1 acting force by the biting action, under the cooperation of the structure of the buffer layer 200, the hollow elastic tube 202 in the oblong slot 201 is offset along the direction a so that the buffer layer 200 has a larger elastic deformation space along the direction b, and further, the induction layer 401 can generate a larger relative displacement along the direction c, and the induction layer 401 actually generates an effect similar to cutting of a magnetic induction line due to the change of an electric field and an electromagnetic field, so that an induction current is generated, the electric stimulation effect is enhanced by the induction current, and the biting prevention effect of the optical cable is enhanced.

Important index test

Anti-biting test was performed on the anti-biting optical cables of the above-described structures of example 1 and example 2. Four easily-observed 2m multiplied by 2 m-sized full-penetration glass houses are arranged, 5 tested cables with the length of 1.5m are respectively erected at the position of 0.35m, 8 male red-belly rats with strong climbing habit and biting habit are put into each full-penetration glass house, the signs of the selected red-belly rats are basically the same, animal experiment standards are met, continuous observation and record of shooting for 3 days are carried out, the total climbing times, the average time length of single climbing pass, the average residence time length and the biting times of the tested cables are recorded in each full-penetration glass house, and the damage degree of the tested cables is judged according to the biting index in the literature by referring to [ J ]. Chinese new communication, 2012,000 (016): 54-55 ], and the average value of 15 tested cables is calculated.

The above test controls the relative humidity of 85% in the full-transparent glass room as a rainy day simulation control and 50% as a sunny day simulation control, respectively.

The test shows that:

the average damage index of example 1 was 0.93 in a rainy simulated environment and 0.30 in a sunny simulated environment;

the average damage index of example 2 was 0.33 in a rainy simulated environment and 0.17 in a sunny simulated environment.

The test data show that the optical cable has excellent anti-biting effect, and the internal structure of the optical cable can be further improved according to actual use requirements so as to adapt to rain and snow weather and enhance the relative use effect of the optical cable in the rain and snow weather.

Claims

1. An anti-biting optical cable, comprising:

the outer sheath is coated on the outer surface of the conductive layer;

the outer surface of the outer sheath is provided with an induction layer, the induction layer is a metal film, and the outer surface of the induction layer is provided with gravure in an array manner;

the buffer layer is provided with a plurality of long round grooves;

the long round grooves are uniformly arranged in the circumferential direction of the cable core;

a hollow elastic tube is arranged in the oblong slot.

2. The anti-biting optical cable as defined in claim 1, wherein,

3. The anti-biting optical cable as defined in claim 1, wherein,

4. An anti-biting optical cable as defined in claim 1 or 3, wherein,

5. The anti-biting optical cable as defined in claim 1, wherein,

6. The anti-biting optical cable as defined in claim 1, wherein,

7. The anti-biting optical cable as defined in claim 1, wherein,

the gravure depth is 0.5 to 1.0mm.