WO2018141203A1

WO2018141203A1 - Photoelectric composite cable

Info

Publication number: WO2018141203A1
Application number: PCT/CN2018/072835
Authority: WO
Inventors: 王玉梅; 刘长双; 陈少华; 许国强
Original assignee: 中兴通讯股份有限公司
Priority date: 2017-02-04
Filing date: 2018-01-16
Publication date: 2018-08-09
Also published as: CN108400446A; CN108400446B

Abstract

Provided in an embodiment of the present disclosure is a photoelectric composite cable, comprising: a composite cable body, wherein the composite cable body comprises an electrical wire, an optical fiber, and an external sheath for the composite cable. The optical fiber comprises a fiber core, a tight packaging layer, an anti-pressure layer, an anti-tensile layer and an optical fiber sheath. The tight packaging layer wraps the fiber core. The anti-pressure layer and the anti-tensile layer are combined. The tight packaging layer is disposed at an inner portion of the combination of the anti-pressure layer and the anti-tensile layer. The combination of the anti-pressure layer and the anti-tensile layer is disposed at an inner portion of the optical fiber sheath. The electrical wire and the optical fiber are disposed at an inner portion of the external sheath for the composite cable.

Description

Photoelectric composite cable

Technical field

The present disclosure relates to the field of communications, and in particular, to an optoelectric composite cable.

Background technique

With the development of technology, fiber optic cables have largely replaced traditional communication copper cables. In recent years, the concept of photoelectric composite cable has been proposed, that is, the optical fiber and the electric wire are made in one cable, and one photoelectric composite cable satisfies the requirements of transmitting light and electricity at the same time.

Public content

Embodiments of the present disclosure provide an optoelectric composite cable including a composite cable main body including an electric wire, an optical fiber, and a composite cable outer sheath; the optical fiber including a core, a tight cladding, and an anti-corrosion a laminate, a tensile layer, and a fiber sheath, wherein the tight layer surrounds the core, the pressure resistant layer is combined with the tensile layer, and the tight layer is disposed at the compression a combination of a layer and a tensile layer, and a combination of the pressure resistant layer and the tensile layer is disposed inside the fiber jacket; and the wire and the fiber are disposed outside the composite cable The inside of the sheath.

According to some embodiments of the present disclosure, the wire is stranded with the fiber inside the outer sheath of the composite cable.

According to some embodiments of the present disclosure, the pressure resistant layer is a manifold, the anti-stretch layer is a layer of aramid yarn, and the wire includes a power cord.

According to some embodiments of the present disclosure, the anti-stretch layer is wrapped on an outer surface of the pressure resistant layer.

According to some embodiments of the present disclosure, the pressure resistant layer is wrapped on an outer surface of the stretch resistant layer.

According to some embodiments of the present disclosure, the optoelectric composite cable contains a plurality of wires and/or a plurality of fibers.

According to some embodiments of the present disclosure, a plurality of tight-clad layers are disposed inside the combination of the pressure-resistant layer and the anti-stretch layer.

According to some embodiments of the present disclosure, the optoelectric composite cable further includes a wire branch and a fiber branch branching from the composite cable body, a branch branching from the wire branch and the fiber branch branching from the composite cable body In position, the composite cable outer sheath is stripped and a fixing member for fixing and a guard for protection are provided at the branching position.

According to some embodiments of the present disclosure, the fixing member is formed by curing a resin glue, and the guard member is formed by blowing a finger sleeve that passes through the wire branch and the fiber branch and covers the fixing member.

According to some embodiments of the present disclosure, the fiber branch includes a fiber unit; and the fiber unit includes a branch sheath, a transition sheath, a branch fiber, and the branch fiber is at least stripped of the fiber a sheath to expose a portion of the stretch-resistant layer, the inner wall of the adapter sheath being glued and blown onto the branch fiber, the adapter sheath being disposed inside the branch sheath.

According to some embodiments of the present disclosure, the adapter sheath is disposed inside the branch sheath together with at least one filling line.

According to some embodiments of the present disclosure, the fiber unit includes two of the branch fibers and two adapter sheaths respectively blown on the branch fibers, the two adapter sheaths and two filling wires Provided inside the branch sheath.

DRAWINGS

1 is a schematic cross-sectional view of a composite cable body of an optoelectric composite cable in a first embodiment of the present disclosure;

Figure 2 is an enlarged plan view of the optical fiber in the first embodiment of the present disclosure;

3 is a schematic cross-sectional view of a composite cable body of an optoelectric composite cable in a second embodiment of the present disclosure;

4 is a schematic overall view of a photoelectric composite cable according to a third embodiment of the present disclosure;

Figure 5 is a schematic cross-sectional view showing a branch of an electric wire according to a third embodiment of the present disclosure;

Figure 6 is a cross-sectional view showing a fiber unit of a third embodiment of the present disclosure;

Fig. 7 is a schematic cross-sectional view showing a fiber unit of a fourth embodiment of the present disclosure.

detailed description

The technical solutions in the embodiments of the present disclosure are described in the following with reference to the drawings in the embodiments of the present disclosure. It is to be understood that the various embodiments shown in the drawings are In the accompanying drawings, like reference numerals refer to the

First embodiment:

1 is a schematic cross-sectional view of a composite cable body according to a first embodiment of the present disclosure. As shown in FIG. 1 , the photoelectric composite cable provided in this embodiment includes a composite cable body. The composite cable body includes an electric wire 11, an optical fiber 12, and a composite cable outer sheath 13. FIG. 2 is an enlarged view showing details of the optical fiber 12 of FIG. 1.

As shown in FIGS. 1 and 2, the optical fiber 12 includes a core 121, a tight cladding layer 122 encasing a corresponding core, and a compression resistant layer 123 wrapped around at least one (two in this embodiment) tight cladding layer 122. And a tensile resistant layer 124, and a fiber sheath 125 wrapped around the compression resistant layer 123 and the tensile resistant layer 124. The compression resistant layer is combined with the anti-stretch layer. In other words, the tight cladding layer 122 is disposed inside the combination of the compression resistant layer 123 and the tensile resistant layer 124, and the combination of the compression resistant layer 123 and the tensile resistant layer 124 is disposed inside the optical fiber sheath 125. The wire 11 and the optical fiber 12 are stranded inside the outer sheath of the composite cable.

In one example of this embodiment, the wire 11 is a power cord.

In one example of this embodiment, core 121 is a communication core.

In one example of this embodiment, the fiber is an outdoor fiber, such as a single mode or dual mode outdoor fiber.

For an opto-electric composite cable having at least one wire and at least one fiber (for example, having only one wire and one fiber; or two wires and two fibers), in the composite cable body portion, all wires and all fibers are Set in the outer sheath of the composite cable. In addition, all wires and all of the fibers can be twisted together within the composite cable jacket.

In an example of this embodiment, the compression resistant layer 121 may be wrapped with only one tight cladding layer 123.

In an example of the present embodiment, the pressure resistant layer 121 may be wrapped with only three or more tight cladding layers 123.

In an example of the embodiment, the pressure-resistant layer 121 is a manifold (an armor layer).

In one example of this embodiment, the Cayenne is a pressure resistant stainless steel manifold.

In one example of this embodiment, the stretch resistant layer is wrapped (eg, wrapped) on the outer surface of the compression resistant layer (eg, the fistula).

In one example of this embodiment, a compression resistant layer (eg, a fistula) is wrapped (eg, wrapped) on the outer surface of the tensile resistant layer.

In one example of this embodiment, the stretch resistant layer 124 is made of a material having good tensile properties.

In one example of this embodiment, the stretch resistant layer 124 is an aramid yarn layer.

In an example of this embodiment, the wire 11 is composed of a conductor and an insulating layer outside the conductor.

This embodiment provides an optoelectric composite cable. Due to the combination of a pressure-resistant layer (in particular, a manifold) and a tensile-resistant layer (in particular, a tensile-resistant aramid yarn layer), the photovoltaic composite cable is provided with compression and tensile resistance. Even if subjected to external forces (such as pulling, animal bites), it is not easily damaged. In addition, since the optical fiber with the manifold and the optical fiber sheath is directly twisted with the electric wire (in particular, the power supply core), the overall outer diameter of the composite cable is minimized.

Second embodiment:

3 is a schematic cross-sectional view of a composite cable body according to a second embodiment of the present disclosure.

As shown in FIG. 3, the composite cable body of the present embodiment includes: a composite cable outer sheath 125a, a braided shielding layer 126a located in the composite cable outer sheath 125a, a polyester layer 128a located in the braided shielding layer 126a, and Wires, fibers, and fillers 127a are located within the polyester layer 128a. Filler 127a is a polypropylene (PP) rope filler. The number of wires is three. Each of the wires includes a conductor 111a and an insulating layer 112a wrapped around the conductor 111a.

Since the inside of the composite cable body is filled with a polypropylene rope-like filler, the braided shielding layer 126a is provided in the composite cable outer sheath 125a, thereby reducing the outer diameter, volume and weight of the composite cable while achieving good shielding properties.

Third embodiment:

In this embodiment, the opto-electric composite cable includes a wire branch and a fiber branch in addition to the composite cable body. The outer sheath of the composite cable is stripped from the branching position where the wire branch and the fiber branch branch off from the composite cable body. A fixing member for fixing and a guard for protection are provided at the branching position.

Fig. 4 schematically shows an overall schematic view of an optoelectric composite cable comprising a wire branch and a fiber branch.

As shown in FIG. 4, the optoelectric composite cable according to the present embodiment includes a composite cable main body 27, a fiber branch 25, a wire branch 26, a guard 29, a fixing member (not shown), and a label 20.

Fiber branch 25 may include fiber optic units, fiber optic connectors 22 (such as dual Lucent connector (LC) fiber optic connectors and Lucent Connector/Physical Contact (LC/PC) fiber optic connectors, etc.), splitter 23 (such as 2-core splits) And 4-core splitter, etc.). The fiber optic branches 25 may also include an armored pigtail 2, a tie member 24 (such as a tie or other member having a tie) and a protective sleeve 21 (including an A-end guard sleeve and a B-end guard sleeve). A protective sleeve 21 is used to wrap the fiber optic connector 22 and the fiber optic unit. The protective sleeve 21 is fixed to the surface of the optical fiber unit by the tie member 24.

The fiber unit may include a branch sheath 16b, an adapter sheath 15b, and a branch fiber.

The photoelectric composite cable can be branched to obtain the photoelectric composite cable in the embodiment by stripping the corresponding length of the composite cable outer sheath according to the length of the branch, and the wire exposed after the outer sheath of the composite cable is peeled off. And the fiber is processed separately as needed.

In the present embodiment, the electric wire from the composite cable main body is subjected to a crimping process. Specifically, the external electric wire is crimped to the electric wire from the composite cable main body. After crimping, it is protected by a heat shrinkable sleeve to form a wire branch 26. The heat shrink tubing can be a black heat shrink tubing.

Fig. 5 shows a schematic cross-sectional view of a wire branch according to the present embodiment. As shown, three wires including the conductor 111d and the insulating layer 112d are wrapped together with the filler 113d by a heat shrinkable sleeve. The heat shrinkable sleeve includes a cladding 114d, a copper braid layer 115d, and a jacket layer 116d from the inside to the outside.

Fig. 6 is a schematic cross-sectional view showing a fiber unit of a fiber branch according to the present embodiment. The processing of the exposed optical fiber in this embodiment will be described below with reference to FIG.

For each fiber, strip the fiber optic jacket at a distance (eg, about 10 mm from the location of the outer sheath of the composite cable) (if the manifold is outside the tensile layer, The manifold is removed), thereby obtaining a branched fiber. In other words, the branch fiber is the portion of the fiber that is at least stripped of the fiber jacket and exposes the tensile resistant layer (aramid layer). For each of the branched fibers (containing the core 121b and the aramid yarn layer 122b as the outer surface), an aramid-containing adapter sheath 15b (length designed as required) is placed. The aramid yarn in the adapter sheath is dispensed with the aramid yarn layer of the optical fiber, and the adapter sheath of the inner wall is glued to make the aramid bond firmly. Then, the two branch fibers respectively sleeved on the adapter sheath 15b are inserted into the branch sheath 16b of a certain length together with the two filling wires to obtain a fiber unit.

In one example of this embodiment, the adapter sheath is a φ2 mm low smoke zero halogen material (LSZH) jacket.

In one example of this embodiment, the adapter sheath is a LSZH yellow jacket.

In one example of this embodiment, the adapter sheath is a crimp-type tensile sleeve.

In one example of this embodiment, the fill line includes aramid yarn layer 13b and sheath 14b.

In one example of this embodiment, the sheath 14b is a black sheath of low smoke zero halogen material (LSZH).

In one example of this embodiment, the branching sheath 16b is a sheath of low smoke zero halogen material (LSZH).

In one example of this embodiment, the branching sheath 16b is a LSZH black sheath of φ 7 mm.

In an example of this embodiment, in the optoelectric composite cable, the number of wire branches is at least two and/or the number of fiber branches is at least two. Each wire branch can contain one or more wires. Each fiber branch may contain one or more cores.

Referring back to Figure 4, for the branching position between the fiber branch 25 and the wire branch 26, the exposed wire and the outer portion of the fiber are coated with a resin glue for fixing. The fixed portion and the critical position of the optoelectric composite cable smoothly transition. The resin glue is cured to form a fixing member. The guard 29 is formed by a finger sleeve that passes through the fiber branch 25 and the wire branch 26 and covers the fastener.

In one example of this embodiment, the resin glue is replaced by other low melting point materials.

In an example of this embodiment, the resin glue is an epoxy resin glue.

In one example of this embodiment, the finger cannula is a layered hot melt adhesive finger cuff.

In one example of this embodiment, the inner wall of the finger cannula is glued to enhance the fixation.

In an example of the embodiment, after the resin glue is completely cured, the finger sleeve is blown to obtain the guard 29.

In one example of this embodiment, a hot melt adhesive for sealing the gap is applied to the gap between the finger sleeve and the fiber branch 25, the wire branch 26, and/or the composite cable body 27.

In the related art, the photoelectric composite cable is susceptible to moisture and dust. In particular, the cable portion is easily damaged in harsh environments, such as air that has been exposed to outdoor cabinets for a long time. According to the embodiment, the finger sleeve and the heat shrinkable sleeve are used, so that the branches and the stripping position are in a sealed state, achieving the purpose of waterproofing and dustproofing. The aramid in the adapter sheath and the aramid of the optical fiber are dispensed and then contracted to the sheath, so that the joint between the aramid fibers is firm, and the compression resistance and tensile properties of the optical fiber are improved. In the case where the number of fibers (cores) in the fiber unit is small, especially in the case of two, the two branch fibers of the adapter sheath are inserted into the branch sheath together with the filling wires (for example, two) (see Figure 6), so that the fiber unit will not be flat.

Fourth embodiment:

Fig. 7 is a schematic cross-sectional view showing a fiber unit of a fiber branch according to the present embodiment.

In the third embodiment shown in Figure 6, the fiber unit comprises two branch fibers. That is, the branch sheath 16b contains two branch fibers and two filling lines. In the present embodiment, the fiber unit includes four branch fibers (four cores), and therefore, it is not necessary to insert a filling line in the branch sheath 16c. In this case, similar to the third embodiment, each of the branch fibers 16c includes a core 121c, a tight clad layer, and an aramid yarn layer 122c. Each branch fiber is jacketed with an adapter sheath 15c in the aramid yarn layer 122c.

Fifth embodiment:

According to this embodiment, the following steps are performed to perform branching processing of the optoelectric composite cable:

1. It is preferred to strip the opto-electric composite cable according to the length of the branch required.

2. Cut the cable jacket and the manifold from the cable unit about 10mm away from the stripping port.

3. Each fiber is sheathed with a φ2mm LSZH yellow jacket with aramid (the length is selected according to the product structure), and the aramid in the yellow sheath and the aramid in the photoelectric composite cable are blown and shrunk to the inner wall. With a rubber sleeve, the aramid is fixed firmly.

4. Insert two φ2mm yellow sheathed fibers together with a φ2mm black fill line into a φ7mm black low-smoke halogen-free jacket of a certain length.

5. Insert the exposed bare fiber portion into a PVC jacket with aramid and a manifold.

6. The aramid in the sheath and the aramid in the yellow sheath are placed on the inner cylinder surface of the pressure-bonded tensile sleeve, and the outer surface of the inner cylinder of the tensile sleeve is dispensed, and then crimped to make the aramid The tensile strength is stronger.

7. The fiber optic part is assembled with the fiber optic connector, and the aramid yarn is fixed in the crimping sleeve in the fiber optic connector, so that the fiber optic cable assembly has a tensile function.

8. At the stripping port of the photoelectric composite cable, the external power cable and the power cable of the composite cable are crimped;

9. The cable and the power cord part of the hybrid cable stripping are integrally fixed with epoxy glue, and after the glue is completely cured, the finger sleeve of the inner wall is glued.

The above is only a specific embodiment of the present disclosure, and is not intended to limit the present disclosure in any way. Any modification, equivalent change and combination of the above embodiments according to the technology of the present disclosure still belong to the technical solution of the present disclosure. protected range.

Claims

An optoelectronic composite cable, characterized in that

The optoelectronic composite cable comprises a composite cable body, the composite cable body comprising an electric wire, an optical fiber and a composite cable outer sheath;

The optical fiber includes a core, a tight cladding layer, a pressure resistant layer, a tensile resistant layer, and a fiber sheath, wherein the tight cladding layer surrounds the core, and the pressure resistant layer is combined with the tensile layer The tight cladding layer is disposed inside the combination of the pressure resistant layer and the tensile layer, and the combination of the pressure resistant layer and the tensile layer is disposed inside the fiber sheath; and

The wire and the optical fiber are disposed inside the outer sheath of the composite cable.
The optoelectric composite cable of claim 1 wherein said wire is stranded with said fiber within said composite cable outer sheath.
The optoelectric composite cable according to claim 1, wherein said pressure resistant layer is a manifold.
The optoelectric composite cable according to claim 1, wherein said anti-stretch layer is an aramid yarn layer.
The optoelectric composite cable of claim 1 wherein said wire comprises a power cord.
The optoelectric composite cable according to any one of claims 1 to 5, wherein in the combination of the pressure resistant layer and the anti-stretch layer, the anti-stretch layer is wrapped in the compression resistance On the outer surface of the layer.
The optoelectric composite cable according to any one of claims 1 to 5, wherein in the combination of the pressure resistant layer and the tensile layer, the pressure resistant layer is wrapped in the tensile resistance On the outer surface of the layer.
The optoelectric composite cable according to any one of claims 1 to 5, wherein the optoelectric composite cable contains a plurality of electric wires.
The optoelectric composite cable according to any one of claims 1 to 5, wherein the optoelectric composite cable contains a plurality of optical fibers.
The optoelectric composite cable according to any one of claims 1 to 5, wherein a plurality of the clad layers are provided inside the combination of the pressure resistant layer and the tensile layer.
The optoelectric composite cable according to any one of claims 1 to 5, characterized in that

The optoelectric composite cable further includes a wire branch and a fiber branch branched from the composite cable body, and

The composite cable outer sheath is stripped from the branching position where the electric wire branch and the optical fiber branch branch from the composite cable main body, and a fixing member for fixing is provided at the branching position, and Protective parts for protection.
The optoelectric composite cable according to claim 11, wherein the fixing member is formed by curing a resin glue.
The optoelectric composite cable according to claim 11, wherein said guard member is formed by blowing a finger sleeve that passes through said wire branch and said fiber branch and covers said fixing member.
The optoelectric composite cable of claim 11 wherein:

The fiber branch includes a fiber unit; and

The fiber unit includes a branch sheath, an adapter sheath, and a branch fiber, wherein the branch fiber is a portion of the fiber that is stripped of the fiber sheath to expose the anti-stretch layer, the transfer The inner wall of the sheath is glued and blown onto the branch fiber, and the adapter sheath is disposed inside the branch sheath.
The optoelectric composite cable according to claim 14, wherein the stretch resistant layer is an aramid yarn layer, and the transfer sheath contains aramid.
The optoelectric composite cable according to claim 14, wherein said branching sheath is made of a low-smoke halogen-free material.
The optoelectric composite cable according to claim 14, wherein said fiber unit comprises two said branch fibers and two transfer sheaths respectively blown onto said branch fibers, said two transfer A sheath and two filling lines are disposed inside the branch sheath.
The optoelectric composite cable of claim 11 wherein said fiber optic branch further comprises a splitter and a fiber optic connector, and said fiber optic unit is coupled to said fiber optic connector by said splitter.
The optoelectric composite cable according to claim 11 wherein said fiber optic branch further comprises a protective sleeve for wrapping said fiber optic connector and said fiber optic unit, said guard sleeve being secured by a tie member The surface of the fiber unit.
The optoelectric composite cable according to claim 11, wherein in the electric wire branch, the electric wires from the composite cable main body and the external electric wires are crimped to each other.