CN112099161A

CN112099161A - Optical cable without yarn binding

Info

Publication number: CN112099161A
Application number: CN202010811056.0A
Authority: CN
Inventors: 王梦伟; 陈龙; 胡乐; 丁渠成; 孙文涛; 万文波; 杨钰; 沈聪; 严惠良; 盛春敏; 韦冬; 马建林; 杨艳杰
Original assignee: Zhejiang Dongtong Optical Network Iot Technology Co ltd
Current assignee: Zhejiang Dongtong Optical Network Iot Technology Co ltd
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2020-12-18

Abstract

The invention discloses an optical cable without yarn binding, which comprises a central reinforcing member (1), a plurality of cable cores (2) twisted outside the central reinforcing member (1) and bonding rings (3) coated outside the cable cores (2). According to the optical cable without the binding yarns, the binding rings are arranged outside the cable cores to fix the cable cores without the binding yarns, so that adverse effects caused by the binding yarns can be effectively prevented, meanwhile, the cable cores are easy to peel, after the binding rings are cut, a single cable core can be taken out, and other cable cores cannot be affected by the binding rings and are not loosened.

Description

Optical cable without yarn binding

Technical Field

The invention relates to an optical cable, in particular to an optical cable without yarn binding.

Background

Along with the development of communication technology, the demand of optical cables is also increasing more and more, and the cabling method in the prior art mainly adopts SZ transposition, and the mode of tying yarn is adopted to the fixed of beam tube after the transposition, and the fixed yarn tying tension that exists of tying yarn can cause certain extrusion to form the yarn tying seal to optical fiber beam tube, can lead to the optical fiber attenuation to be bigger partially seriously, phenomenon such as step appears seriously. And the bundle tube is difficult to peel in subsequent construction, the binding yarns need to be cut one by one to peel the sleeve, and the residual sleeve in the optical cable after the binding yarns are cut is in a loose state. The policy of entering the ground by an overhead line is developed, when the optical cable is used underground, if the current situation is found, the situation cannot be found in time, information is easily interrupted, and time is wasted during remediation.

Disclosure of Invention

The present invention is directed to overcoming the above-mentioned drawbacks of the prior art, and an object of the present invention is to provide an optical cable without a yarn-tying, which can avoid adverse effects caused by the yarn-tying.

In order to achieve the above object, the present invention provides an optical cable without yarn binding, which includes a central strength member, a plurality of cable cores twisted outside the central strength member, and a bonding ring covering the outside of the plurality of cable cores.

In addition, the invention also provides the following auxiliary technical scheme:

the number of the bonding rings is multiple, and the bonding rings are arranged outside the cable cores at intervals along the axis.

The bonding ring is arranged at the twisting reversing point.

The material of the bonding ring is polyester resin.

The bonding ring comprises an outer ring layer surrounding the peripheries of a plurality of cable cores and bonding parts filled between two adjacent sleeve pipes.

The optical cable without the need of yarn binding also comprises a sensing optical fiber arranged along the axial direction of the optical cable.

The sensing optical fiber is fixed in the bonding ring.

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

1. according to the optical cable without the binding yarns, the binding rings are arranged outside the cable cores to fix the cable cores, the binding yarns are not needed, adverse effects caused by the binding yarns can be effectively prevented, meanwhile, the cable cores are easy to peel, after the binding rings are cut, a single cable core can be taken out, and other cable cores cannot be affected by the binding rings and are not loosened.

2. In the invention, the bonding rings are arranged on the optical cable at intervals, so that the material can be saved, the cost is reduced, in addition, the bonding rings are arranged outside the bundle tube in a coating mode, the local extrusion of the sleeve tube can not be caused to generate a yarn-binding mark, the roundness of the sleeve tube is ensured, the extrusion of the optical fiber is reduced, and the operation is very convenient through ultraviolet curing after coating.

3. The optical cable without the need of yarn binding is also provided with the sensing optical fiber, can alarm abnormal conditions and time, reduces the rush-repair time, and is favorable for ensuring the reliable operation of the optical cable.

Drawings

Fig. 1 is a schematic view showing the construction of the optical cable of the present invention without binding yarns.

Fig. 2 is a front view of the optical cable of the present invention without binding yarns.

Detailed Description

The technical solution of the present invention is further described in non-limiting detail below with reference to the preferred embodiments and the accompanying drawings.

As shown in fig. 1, the optical cable without binding yarns according to a preferred embodiment of the present invention includes a central strength member 1, a plurality of cable cores 2 twisted outside the central strength member 1, and a binder ring 3 covering the plurality of cable cores 2.

The central strength member 1 is located at the center of the optical cable, and the plurality of cable cores 2 are stranded on the outer circumference of the central strength member 1 in an SZ-stranded manner. The central reinforcement 1 may be a metal reinforcement, such as stainless steel wire, or a non-metal reinforcement, such as FRP or KFRP.

In this embodiment, the number of the cable cores 2 is 6, and includes a sleeve 20 and a plurality of optical fibers 21 disposed in the sleeve 20.

The central reinforcement 1 and the plurality of cable cores 2 form a bundle tube, the bonding ring 3 is coated on the outside of the bundle tube, as shown in fig. 1, the bonding ring 3 is coated and filled on the outside of the plurality of cable cores 2, and specifically, the bonding ring comprises an outer ring layer 30 surrounding the outside of the bundle tube and a bonding portion 31 extending between two adjacent sleeve pipes 20. The outer race layer 30 has a circular cross-sectional shape.

The adhesive ring 3 is made of a material having a certain viscosity, and in this embodiment, the adhesive ring 3 is made of a polyester resin. After the plurality of cable cores 2 are stranded on the periphery of the central reinforcement 1 in an SZ stranding mode, polyester resin is coated outside the bundle tube through coating equipment, and the polyester resin on the outer surface of the cable cores is immediately cured through an ultraviolet curing furnace, so that the polyester resin generates a coating force on the bundle tube, and the cable cores 2 are prevented from loosening.

As shown in fig. 2, the bonding rings 3 need not be coated on the entire optical cable, and may be disposed on the bundle tube at intervals along the axial direction of the optical cable, and preferably, the bonding rings 3 are located at the reversing points where the cable cores are twisted, and the lengths of the bonding rings are identical to or slightly greater than the lengths of the reversing points. The effect of coating polyester colloid at the turning point of the twisting for fixing can be achieved by controlling the coating time, the twisting pitch and the production speed for matching.

As shown in fig. 1 and 2, the optical cable without the need of yarn binding according to the present invention further includes a sensing optical fiber 4, the sensing optical fiber 4 is fixed in the bonding ring 3, and the sensing optical fiber 4 may not be twisted around the outside, but may be straightly inserted into the bonding ring 3. The type of the sensing optical fiber 4 can be selected according to different situations, for example, when the temperature condition needs to be monitored, the sensing optical fiber 4 can be selected as a temperature sensing optical fiber, when the temperature of the optical cable is over high, combustion or other abnormal factors may occur, the position is rapidly determined through the terminal connector, abnormal investigation processing is performed, a reaction can be performed at the first time, emergency processing is performed, and reliable operation of communication is guaranteed. When other factors such as pressure, displacement, speed, voltage and the like need to be monitored, the sensing optical fiber 4 with the corresponding monitoring function can be selected.

It is understood that there may be a plurality of sensing fibers 4, and the monitoring factors of the plurality of sensing fibers 4 may also be different.

The optical cable without yarn binding at least comprises the following advantages:

It should be noted that the above-mentioned preferred embodiments are merely illustrative of the technical concepts and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides an optical cable that need not bundle yarn which characterized in that: the cable comprises a central reinforcing piece (1), a plurality of cable cores (2) stranded outside the central reinforcing piece (1) and bonding rings (3) coated outside the cable cores (2).

2. The optical cable without binding yarns according to claim 1, wherein: the number of the bonding rings (3) is multiple, and the bonding rings are arranged outside the cable cores (2) at intervals along the axis.

3. The optical cable without binding yarns according to claim 2, wherein: the bonding ring (3) is arranged at the twisting reversing point.

4. The optical cable without binding yarns according to claim 1, wherein: the material of the bonding ring (2) is polyester resin.

5. The optical cable without binding yarns according to any one of claims 1 to 4, wherein: the bonding ring (2) comprises an outer ring layer (30) surrounding the periphery of a plurality of cable cores (2) and bonding parts (31) filled between two adjacent sleeves (20).

6. The optical cable without binding yarns according to any one of claims 1 to 4, wherein: it also comprises a sensing optical fiber (4) arranged axially along the optical cable.

7. The optical cable without binding yarns as recited in claim 6, wherein: the sensing optical fiber (4) is fixed in the bonding ring (3).