CN211014736U - Ultrahigh-density large-core air-blowing micro cable - Google Patents
Ultrahigh-density large-core air-blowing micro cable Download PDFInfo
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- CN211014736U CN211014736U CN201921834200.1U CN201921834200U CN211014736U CN 211014736 U CN211014736 U CN 211014736U CN 201921834200 U CN201921834200 U CN 201921834200U CN 211014736 U CN211014736 U CN 211014736U
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Abstract
The utility model provides a big core number air-blowing micro cable of super high density, it is moulded through 200 mu m small-size optic fibre cover to the loose sleeve pipe that 48 optic fibre at most formed is subunit, and big core number air-blowing micro cable of preparation super high density has low weight, little cable footpath, advantage that optical fiber density is high. The optical unit stranding device comprises a central reinforcing piece, at least one layer of optical unit stranding layer is annularly arranged on the periphery of the central reinforcing piece, the relatively outer layer of optical unit stranding layer is stranded on the periphery formed by the relatively inner layer of optical unit stranding layer, a plurality of identical subunits are included in each layer of optical unit stranding layer, the subunits in the optical unit stranding layers of different layers are identical subunits, the number of the subunits in the relatively outer layer of optical unit stranding layer is larger than that of the subunits in the relatively inner layer of optical unit stranding layer, each subunit comprises a loose tube, at most 48 small-size optical fibers of 200 mu m are arranged in each loose tube, factice is filled in the loose tube, and the periphery of the outermost optical unit stranding layer is wrapped with a PE outer sheath.
Description
Technical Field
The utility model relates to a technical field of photoelectric composite cable structure specifically is a big core number air-blowing micro cable of super high density.
Background
With the increasing demand of global communication services for network bandwidth, optical fiber communication is widely used as a communication mode with the fastest speed and the best transmission quality. However, in the network construction, with the shortage of pipeline resources, users have made higher requirements on the space utilization rate, the construction efficiency, the maintenance convenience and the like of the pipeline, and the air-blown micro-tube micro-cable technology is widely popularized in the international market as a mature optical cable network laying technology with excellent comprehensive performance and a unique laying mode, and the increasing demand of the air-blown micro-cable promotes the development of the optical cable towards the direction of large core number and small cable diameter.
A traditional layer-stranded air-blowing micro cable generally adopts more than 4 2-24 core sleeves to be stranded around a central reinforcement part to form a cable core, and then an optical cable is formed through a polyethylene sheath. At present, urban pipelines are increasingly tense, the existing pipeline resources cannot be fully utilized, and great influence can be caused on the competitiveness of products, so that the method is of great importance for reducing the equivalent area of the same number of optical fibers in a sleeve, increasing the optical fiber density of optical cables with the same number of cores, reducing the outer diameter of the optical cables and being compatible with small-size air-blowing micro cables.
Disclosure of Invention
To the above problem, the utility model provides a big core number air-blown micro cable of super high density, it moulds through 200 mu m small-size optic fibre cover to the loose tube that 48 optic fibre at most formed is subunit, prepares big core number air-blown micro cable of super high density, has low weight, little cable footpath, advantage that optic fibre density is high, satisfies the demand at city piping erection.
An ultra-high density large core number air-blowing micro cable is characterized in that: the optical unit stranding device comprises a central reinforcing piece, at least one layer of optical unit stranding layer is annularly arranged on the periphery of the central reinforcing piece, the relatively outer layer of optical unit stranding layer is stranded on the periphery formed by the relatively inner layer of optical unit stranding layer, a plurality of identical subunits are included in each layer of optical unit stranding layer, the subunits in the optical unit stranding layers of different layers are identical subunits, the number of the subunits in the relatively outer layer of optical unit stranding layer is larger than that of the subunits in the relatively inner layer of optical unit stranding layer, each subunit comprises a loose tube, at most 48 small-size optical fibers of 200 mu m are arranged in each loose tube, factice is filled in the loose tube, and the periphery of the outermost optical unit stranding layer is wrapped with a PE outer sheath.
It is further characterized in that: the central reinforcing part is a small-diameter central reinforcing part, and the diameter of the central reinforcing part is not larger than the outer diameter of the corresponding loose tube of the subunit;
the central reinforcement is made of high-modulus FRP (fiber reinforced plastics) with the modulus larger than 56GPa, and water-blocking yarns are arranged in a gap between the central reinforcement and the inner periphery of the optical unit stranding layer of the inner layer;
water-blocking yarns are arranged in gaps between the light unit stranding layers on the outer layers and the light unit stranding layers on the inner layers;
a tearing rope is arranged on the inner wall of the PE outer sheath, and the wall thickness of the PE outer sheath is 0.4 mm;
when the integral core number is 288 cores, six subunits are annularly distributed on the periphery of the central reinforcing member, 48 200-micron small-size optical fibers are arranged in the loose tube of each subunit, and then the peripheries of the six subunits are coated with PE outer sheaths;
when the overall core number is 864, the optical fiber module comprises a first optical unit stranded layer and a second optical unit stranded layer, wherein the first optical unit stranded layer comprises 6 subunits, the second optical unit stranded layer comprises 12 subunits, 48 200 μm small-sized optical fibers are arranged in a loose tube of each subunit, the first optical unit is stranded on the periphery of the central reinforcing member, the second optical unit is stranded on the periphery of the first optical unit, and the periphery of the second optical unit is coated with a PE outer sheath;
when whole core number is 1728 cores, it includes first light unit transposition layer, second light unit transposition layer, third unit transposition layer, first light unit transposition layer is including 6 the subunit, second light unit transposition layer is including 12 the subunit, third unit transposition layer is including 18 the subunit is arranged in the pine cover pipe of every subunit 48 root 200 mu m small-size optic fibre, and first light unit transposition is in the periphery of center reinforcement, second light unit transposition is in the periphery of first light unit, third light unit transposition is in the periphery of second light unit, the periphery cladding of third light unit has the PE oversheath.
A preparation technology of an air-blowing micro cable is characterized in that: firstly, optical fiber distribution is carried out, 48 small-size optical fibers are colored and colored, wherein the optical fibers with the numbers of 1-12 are colored, the colors of the optical fibers with the numbers of 1-12 are different, and 13-24, 25-36 and 37-48 are colored according to different numbers of colored rings with different colors in unit distance, so that the 48 optical fibers in each subunit can be rapidly distinguished;
in the process of loosening the sleeve, 48 optical fibers are sent into the loose sleeve by uniformly controlling the extrusion molding quantity of PBT, and meanwhile, the loose sleeve is filled with a trace amount of factice to ensure the outer diameter stability of the loose sleeve, and meanwhile, an optical fiber twisting device is used for controlling the fiber length difference and the outer diameter stability of the optical fibers;
the central reinforcement is made of high-modulus FRP (fiber reinforced plastics) with the modulus larger than 56GPa, water-blocking yarns are placed around the central reinforcement, a plurality of layers of optical unit twisting layers are arranged along the extension direction of the central reinforcement, each optical unit twisting layer is formed by combining a plurality of subunits, and all the subunits and the nonmetal reinforcement form a cable core with a stable structure through an SZ twisting process;
and then covering a layer of PE material outside the cable core to form a PE outer sheath.
It is further characterized in that: the cable adopts a semi-dry structure, the loose tube is filled with factice, and the cable core is made of water-blocking yarn, so that the use of the factice is reduced, and the environment-friendly effect is achieved;
the outer diameter of a single loose tube of the subunit is 2.1 +/-0.05 mm, and the wall thickness is 0.15 +/-0.03 mm;
13-24, 25-36 and 37-48 optical fibers respectively perform ring coloring according to different numbers of color rings with different colors in a unit distance, wherein the unit distance is 50mm, the width of each color ring is 2mm, one color ring in the unit distance is of a first model, two color rings in the unit distance are of a second model, three color rings in the unit distance are of a third model, the interval between the adjacent color rings in each unit distance is 3mm, and the 13-24, 25-36 and 37-48 optical fibers respectively select corresponding models to perform ring coloring.
After the utility model is adopted, compared with the traditional layer stranded air-blown micro cable, the outer diameter is reduced by about 10-25% under the same core number, the number of the optical fiber cores in unit area is increased by 22-91%, the optical fiber air-blown micro cable has the characteristics of high optical fiber density, large core number and small cable diameter, the utilization rate of the pipeline can be effectively improved, the 1728 core air-blown micro cable is prepared by multilayer stranded maximum core number, and the optical fiber density can reach about 89%; the utility model adopts a semi-dry design, the loose tube is filled with factice, and the cable core uses water-blocking yarn, so that the usage of the factice is reduced, and the environmental protection effect is achieved; the utility model adopts the structural design of the thin-wall sleeve and the sheath, thereby improving the optical fiber density of the optical cable, further reducing the cable weight, improving the laying convenience of the optical cable and reducing the construction strength; the utility model discloses supply and richened air-blowing micro cable series.
Drawings
Fig. 1 is a schematic cross-sectional structural view of a first embodiment of an optical cable according to the present invention;
fig. 2 is a schematic cross-sectional structural view of a second embodiment of the optical cable of the present invention;
fig. 3 is a schematic cross-sectional structural view of a third embodiment of the optical cable of the present invention;
FIG. 4 is a schematic view of the optical fiber color wheel of the present invention;
the names corresponding to the sequence numbers in fig. 2 are as follows:
the cable comprises a central reinforcement 1, a subunit 2, a loose tube 3, an optical fiber 4, factice 5, a PE outer sheath 6, a water-blocking yarn 7 and a tearing rope 8.
Detailed Description
An ultra-high density large core air-blown micro-cable, as shown in fig. 1-3: the optical fiber cable comprises a central reinforcing member 1, at least one layer of optical unit twisting layer is annularly distributed on the periphery of the central reinforcing member 1, the optical unit twisting layer which is relatively outer is twisted on the periphery formed by the optical unit twisting layer which is relatively inner, a plurality of same subunits 2 are included in the optical unit twisting layer of each layer, the subunits in the optical unit twisting layers of different layers are the same subunits 2, the number of the subunits in the optical unit twisting layer which is relatively outer is larger than that of the subunits in the optical unit twisting layer which is relatively inner, each subunit 2 comprises a loose tube 3, at most 48 optical fibers 4 with the size of 200 mu m are arranged in each loose tube 3, factice 5 is filled in the loose tube 4, and the periphery of the optical unit twisting layer which is outermost is coated with a PE outer sheath 6.
The central reinforcement 1 is a small diameter central reinforcement, the diameter of which is not larger than the outer diameter of the corresponding loose tube 3 of the subunit 2;
the material of the central reinforcement 1 is high modulus FRP, the modulus is more than 56GPa, and water-blocking yarns 7 are arranged in a gap between the central reinforcement 1 and the inner periphery of the optical unit stranding layer of the inner layer;
a water-blocking yarn 7 is arranged in a gap between the light unit stranding layer of the opposite outer layer and the light unit stranding layer of the opposite inner layer;
the inner wall of the PE outer sheath 6 is provided with a tearing rope 8, and the wall thickness of the PE outer sheath 6 is 0.4 mm;
the first specific embodiment is shown in fig. 1: when the overall core number is 288 cores, six subunits 2 are annularly arranged on the periphery of the central reinforcing member 1, 48 200 μm small-sized optical fibers 4 are arranged in the loose tube 3 of each subunit 2, and then the peripheries of the six subunits 2 are coated with the PE outer sheaths 6.
The second embodiment is shown in fig. 2: when the whole core number is 864 cores, it includes first light unit stranded layer, second light unit stranded layer, first light unit stranded layer is including 6 subunits 2, second light unit stranded layer is including 12 subunits 2, 48 small-size optical fibers 4 of 200 μm have been arranged in the loose tube 3 of every subunit 2, first light unit transposition is in the periphery of central reinforcement 1, the transposition of second light unit is in the periphery of first light unit, the periphery cladding of second light unit has PE oversheath 6.
The second embodiment is shown in fig. 3: when the whole core number is 1728, the optical fiber comprises a first optical unit stranded layer, a second optical unit stranded layer and a third unit stranded layer, wherein the first optical unit stranded layer comprises 6 subunits 2, the second optical unit stranded layer comprises 12 subunits 2, the third unit stranded layer comprises 18 subunits 2, 48 small-size optical fibers 4 of 200 microns are arranged in a loose tube 3 of each subunit 2, the first optical unit is stranded on the periphery of a central reinforcer 1, the second optical unit is stranded on the periphery of the first optical unit, the third optical unit is stranded on the periphery of the second optical unit, and the periphery of the third optical unit is coated with a PE outer sheath 6.
A preparation process of an air-blowing micro cable comprises the following steps: firstly, optical fiber distribution is carried out, 48 small-size optical fibers are colored and colored, wherein the optical fibers with the numbers of 1-12 are colored, the colors of the optical fibers with the numbers of 1-12 are different, and 13-24, 25-36 and 37-48 are colored according to different numbers of colored rings with different colors in unit distance, so that the 48 optical fibers in each subunit can be rapidly distinguished;
in the process of loosening the sleeve, 48 optical fibers are sent into the loose sleeve by uniformly controlling the extrusion molding quantity of PBT, and meanwhile, the loose sleeve is filled with a trace amount of factice to ensure the outer diameter stability of the loose sleeve, and meanwhile, an optical fiber twisting device is used for controlling the fiber length difference and the outer diameter stability of the optical fibers;
the central reinforcement is made of high-modulus FRP (fiber reinforced plastics) with the modulus larger than 56GPa, water-blocking yarns are placed around the central reinforcement, a plurality of layers of optical unit twisting layers are arranged along the extension direction of the central reinforcement, each optical unit twisting layer is formed by combining a plurality of subunits, and all the subunits and the nonmetal reinforcement form a cable core with a stable structure through an SZ twisting process;
and then covering a layer of PE material outside the cable core to form a PE outer sheath.
The cable adopts a semi-dry structure, the loose tube is filled with factice, and the cable core is made of water-blocking yarn, so that the use of the factice is reduced, and the environment-friendly effect is achieved;
the outer diameter of a single loose tube of the subunit is 2.1 plus or minus 0.05mm, and the wall thickness is 0.15 plus or minus 0.03 mm;
the color ring models are specifically shown in fig. 4, serial number optical fibers of 13-24, 25-36 and 37-48 are respectively colored according to color rings with different numbers and different colors in a unit distance, wherein the unit distance is 50mm, the width of each color ring is 2mm, one color ring in the unit distance is a first model S50, two color rings in the unit distance are a second model D50, three color rings in the unit distance are a third model T50, the interval between adjacent color rings in each unit distance is 3mm, and the serial number optical fibers of 13-24, 25-36 and 37-48 are respectively selected to be corresponding models for colored rings.
Compared with the traditional layer stranded air-blown micro cable, the outer diameter is reduced by about 10-25% under the same core number, the number of optical fiber cores in unit area is increased by 22-91%, the optical fiber air-blown micro cable has the characteristics of high optical fiber density and large core number and small cable diameter, the utilization rate of a pipeline can be effectively improved, the 1728 core air-blown micro cable is prepared by the maximum core number of multilayer stranding, and the optical fiber density can reach about 89%; the utility model adopts a semi-dry design, the loose tube is filled with factice, and the cable core uses water-blocking yarn, so that the usage of the factice is reduced, and the environmental protection effect is achieved; the utility model adopts the structural design of the thin-wall sleeve and the sheath, thereby improving the optical fiber density of the optical cable, further reducing the cable weight, improving the laying convenience of the optical cable and reducing the construction strength; the utility model discloses supply and richened air-blowing micro cable series.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. An ultra-high density large core number air-blowing micro cable is characterized in that: the optical unit stranding device comprises a central reinforcing piece, at least one layer of optical unit stranding layer is annularly arranged on the periphery of the central reinforcing piece, the relatively outer layer of optical unit stranding layer is stranded on the periphery formed by the relatively inner layer of optical unit stranding layer, a plurality of identical subunits are included in each layer of optical unit stranding layer, the subunits in the optical unit stranding layers of different layers are identical subunits, the number of the subunits in the relatively outer layer of optical unit stranding layer is larger than that of the subunits in the relatively inner layer of optical unit stranding layer, each subunit comprises a loose tube, at most 48 small-size optical fibers of 200 mu m are arranged in each loose tube, factice is filled in the loose tube, and the periphery of the outermost optical unit stranding layer is wrapped with a PE outer sheath.
2. The ultra-high density large core air-blown micro-cable of claim 1, wherein: the central reinforcement is a small diameter central reinforcement having a diameter no greater than the outer diameter of the corresponding loose tube of the subunit.
3. The ultra-high density large core air-blown micro-cable of claim 1, wherein: the central reinforcing member is made of high-modulus FRP (fiber reinforced plastics) with the modulus being larger than 56GPa, and water-blocking yarns are arranged in a gap between the inner peripheries of the central reinforcing member and the optical unit stranding layer of the inner layer.
4. The ultra-high density large core air-blown micro-cable of claim 1, wherein: and water-blocking yarns are arranged in gaps between the light unit stranding layers of the opposite outer layers and the light unit stranding layers of the opposite inner layers.
5. The ultra-high density large core air-blown micro-cable of claim 1, wherein: the inner wall of the PE outer sheath is provided with a tearing rope, and the wall thickness of the PE outer sheath is 0.4 mm.
6. The ultra-high density large core air-blown micro-cable of claim 1, wherein: when the integral core number is 288 cores, six subunits are annularly distributed on the periphery of the central reinforcing member, 48 small-size optical fibers of 200 mu m are arranged in the loose tube of each subunit, and then the peripheries of the six subunits are coated with PE outer sheaths.
7. The ultra-high density large core air-blown micro-cable of claim 1, wherein: when the overall core number is 864, the optical fiber module comprises a first optical unit stranded layer and a second optical unit stranded layer, wherein the first optical unit stranded layer comprises 6 subunits, the second optical unit stranded layer comprises 12 subunits, 48 200 μm small-sized optical fibers are arranged in a loose tube of each subunit, the first optical unit is stranded on the periphery of the central reinforcing member, the second optical unit is stranded on the periphery of the first optical unit, and the periphery of the second optical unit is coated with a PE outer sheath.
8. The ultra-high density large core air-blown micro-cable of claim 1, wherein: when whole core number is 1728 cores, it includes first light unit transposition layer, second light unit transposition layer, third unit transposition layer, first light unit transposition layer is including 6 the subunit, second light unit transposition layer is including 12 the subunit, third unit transposition layer is including 18 the subunit is arranged in the pine cover pipe of every subunit 48 root 200 mu m small-size optic fibre, and first light unit transposition is in the periphery of center reinforcement, second light unit transposition is in the periphery of first light unit, third light unit transposition is in the periphery of second light unit, the periphery cladding of third light unit has the PE oversheath.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110737058A (en) * | 2019-10-29 | 2020-01-31 | 江苏亨通光电股份有限公司 | ultrahigh-density large-core air-blowing micro cable and manufacturing process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110737058A (en) * | 2019-10-29 | 2020-01-31 | 江苏亨通光电股份有限公司 | ultrahigh-density large-core air-blowing micro cable and manufacturing process thereof |
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