CN113866922A - Outdoor optical cable with large-core-number micro-beam tube and process manufacturing method thereof - Google Patents

Outdoor optical cable with large-core-number micro-beam tube and process manufacturing method thereof Download PDF

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Publication number
CN113866922A
CN113866922A CN202111193931.4A CN202111193931A CN113866922A CN 113866922 A CN113866922 A CN 113866922A CN 202111193931 A CN202111193931 A CN 202111193931A CN 113866922 A CN113866922 A CN 113866922A
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China
Prior art keywords
micro
tube
optical
core
cable
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Pending
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CN202111193931.4A
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Chinese (zh)
Inventor
林卫峰
沈智锋
王宇亮
刘增福
陈丹宇
严文
姬雨歆
代国庆
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Hengtong Optic Electric Co Ltd
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Hengtong Optic Electric Co Ltd
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Priority to CN202111193931.4A priority Critical patent/CN113866922A/en
Publication of CN113866922A publication Critical patent/CN113866922A/en
Priority to FR2210471A priority patent/FR3128296A1/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401Optical cables
    • G02B6/4429Means specially adapted for strengthening or protecting the cables
    • G02B6/443Protective covering
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401Optical cables
    • G02B6/4429Means specially adapted for strengthening or protecting the cables
    • G02B6/443Protective covering
    • G02B6/4432Protective covering with fibre reinforcements
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4479Manufacturing methods of optical cables
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4479Manufacturing methods of optical cables
    • G02B6/4483Injection or filling devices
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4479Manufacturing methods of optical cables
    • G02B6/4486Protective covering
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401Optical cables
    • G02B6/4429Means specially adapted for strengthening or protecting the cables
    • G02B6/44384Means specially adapted for strengthening or protecting the cables the means comprising water blocking or hydrophobic materials

Abstract

The invention relates to a large-core-number microbeam tube outdoor optical cable and a process manufacturing method thereof, wherein the large-core-number microbeam tube outdoor optical cable comprises a cable core and a sheath layer coated outside the cable core, the cable core comprises a plurality of layers of microbeam tube optical units which are twisted, the plurality of layers of microbeam tube optical units are twisted and molded at one time, and each layer of microbeam tube optical unit is twisted and twisted spirally in the SZ direction; the optical unit of the micro-beam tube comprises a micro-beam tube made of polyolefin low-smoke halogen-free modified material and a plurality of optical fibers coated in the micro-beam tube, wherein fiber ointment is coated outside the optical fibers; a reinforcing piece is embedded in the sheath layer; the manufacturing method of the outdoor optical cable of the large-core-number microbeam tube sequentially comprises the following steps: preparing a microbeam tube optical unit, preparing a cable core by layering and stranding a plurality of microbeam tube optical units, extruding a sheath layer outside the cable core, and preparing a finished cable. The invention realizes the structural design of the micro-beam tube with large core number and provides a preparation process method thereof.

Description

Outdoor optical cable with large-core-number micro-beam tube and process manufacturing method thereof
Technical Field
The invention relates to the technical field of optical cable structure design and preparation methods, in particular to an outdoor optical cable with a large-core-number micro-beam tube and a process manufacturing method thereof.
Background
With the continuous development of modern communication technology and the continuous popularization of social networks and video services, the network requirement of large capacity and high speed is more and more emphasized by users, on one hand, the capacity expansion of the network is to improve the transmission rate of a single optical fiber, but the technology limitation is difficult to quickly improve; on the other hand, the number of data transmission channels, namely optical fibers, is increased, which is easy to implement in most cases, but is limited by the existing pipeline resources, and the network capacity expansion is difficult to realize by laying a plurality of optical cables. Under this prerequisite, can only realize the network dilatation through improving the optical fiber quantity in single optical cable, adopt single big core number optical cable to replace many little core number optical cables simultaneously can effectively lower optical cable construction cost, improve the efficiency of construction.
As the number of fiber optic connections has increased dramatically with the growth of cloud computing services, large data centers are attempting to enhance their optical transmission infrastructure by installing very large core cables. Based on the above requirements, the invention of the optical cable with large core number and high density is necessary.
The micro-beam tube outdoor optical cable in the prior art is widely applied to short-distance overhead and pipeline laying environments, can meet the requirement of short-distance overhead laying and can be directly introduced into pipeline laying without any node, but is difficult to meet the requirement of the communication technology on optical cables with large cores at the present stage.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the problem that the micro-beam tube optical cable in the prior art is difficult to meet the requirement of large core number, provide a large core number micro-beam tube outdoor optical cable and a process manufacturing method thereof, realize the structural design of the large core number micro-beam tube, and provide a preparation process method thereof.
In order to solve the technical problem, the invention provides a large-core-number microbeam tube outdoor optical cable which comprises a cable core and a sheath layer coated outside the cable core, wherein the cable core comprises a plurality of layers of microbeam tube optical units which are twisted and arranged, the plurality of layers of microbeam tube optical units are twisted and molded at one time, and each layer of microbeam tube optical unit is twisted and twisted spirally in the SZ direction; the optical unit of the micro-beam tube comprises a micro-beam tube made of polyolefin low-smoke halogen-free modified material and a plurality of optical fibers coated in the micro-beam tube, wherein fiber ointment is coated outside the optical fibers; and a reinforcing piece is embedded in the sheath layer.
In one embodiment of the present invention, gaps between the plurality of layers of the microbeam tube light units are filled with dry water-blocking yarns, and the dry water-blocking yarns are twisted and filled with the microbeam tube light units.
In one embodiment of the invention, a first bundling layer is arranged outside the plurality of layers of the micro-bundle tube light units, the first bundling layer comprises a plurality of spirally arranged yarns, and the plurality of micro-bundle tube light units are bundled into a bundle by the yarns.
In one embodiment of the invention, the cable core is further coated with a dry water-blocking tape, and the dry water-blocking tape wraps or longitudinally wraps the periphery of the cable core.
In one embodiment of the invention, a second binding layer is arranged outside the dry water-blocking tape, and the second binding layer comprises a plurality of spirally arranged yarns, and the yarns are bound into a bundle by the yarns.
In one embodiment of the invention, the sheath layer is of a flat structure, a plurality of non-metal reinforcements are embedded in the sheath layer, the plurality of non-metal reinforcements are symmetrically arranged on two sides of the sheath layer in the short axis direction, and the non-metal reinforcements are of a flat structure.
In order to solve the technical problem, the invention also provides a process manufacturing method of the outdoor optical cable with the large-core-number micro-beam tube, which comprises the following steps:
respectively releasing a plurality of optical fibers from a pay-off rack, keeping the pay-off tension of the optical fibers constant, coating fiber ointment outside the optical fibers, extruding polyolefin low-smoke halogen-free modified materials to form a micro-beam tube, and cooling the micro-beam tube through a cold water tank to form a micro-beam tube optical unit;
the method comprises the following steps of introducing a plurality of microbeam tube optical units into cabling and stranding equipment in a layered mode, introducing dry type water-blocking yarns into gaps among the microbeam tube optical units, synchronously entering the cabling and stranding equipment along with the microbeam tube optical units, carrying out SZ-direction spiral stranding on the microbeam tube optical units in a layered mode through the cabling and stranding equipment, and bundling yarns outside the stranded multi-layer microbeam tube optical units to obtain a cable core;
longitudinally wrapping or lapping a dry water-blocking tape outside a cable core, performing yarn-binding treatment on the water-blocking tape, introducing the cable core coated with the dry water-blocking tape and a non-metal reinforcing part into a sheath plastic extruding machine in parallel for extrusion molding to form a sheath layer, and cooling to form a micro-beam tube outdoor optical cable
In one embodiment of the invention, a fiber ointment micro-filling quantity stability technology is adopted to coat the fiber ointment outside the optical fiber, the fiber ointment storage tank is pressurized on line, a pressure relief flow passage is additionally arranged on a coating mould, and the fiber ointment storage tank and an oil filling pipeline are heated on line.
In one embodiment of the present invention, when a plurality of microbeam tube optical units are layered and twisted, the paying-off tension of the microbeam tube optical units of different layers is controlled to make the excess lengths of the optical fibers in the microbeam tube optical units consistent.
In one embodiment of the invention, when the sheath layer is extruded, the shape and the size of the sheath layer are controlled by adopting a vacuum sizing technology through negative pressure regulation and online monitoring of water pressure.
Compared with the prior art, the technical scheme of the invention has the following advantages:
according to the outdoor optical cable with the large-core-number micro-beam tubes, the optical units of the micro-beam tubes are layered and twisted at one time, so that the density of optical fibers is improved, the size of the optical cable is reduced, the problem that pipeline resources are limited is solved, the construction cost of the optical cable can be effectively lowered by replacing a plurality of optical cables with small cores with a single optical cable with the large core number, and the construction efficiency is improved; the optical fiber is bundled and sleeved by the micro-beam tube optical unit, so that the characteristics of high density and small size are realized, and the micro-beam tube is convenient for tearing and stripping by hands and stripping the optical fiber;
the preparation method of the outdoor optical cable with the large-core-number micro-beam tube adopts a one-time stranding technology, and compared with the preparation of a layer-stranding optical cable, the preparation method has the advantages that the manufacturing process is simple, and the manufacturing period and the cost are reduced; and the traditional process of stranding around a central reinforcing piece is abandoned, and the micro-beam tube optical units are directly arranged for stranding, so that the outer diameter of the cable core is further reduced, and the duty ratio of the optical fibers in the cable core is improved.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the embodiments of the present disclosure taken in conjunction with the accompanying drawings, in which
FIG. 1 is a schematic structural view of a high core count micro-bundled tube outdoor cable of the present invention;
fig. 2 is a flow chart of a process for manufacturing the high-core-count micro-beam tube outdoor optical cable according to the invention.
The specification reference numbers indicate: 1. a microbeam tube light unit; 2. dry water-blocking yarn; 3. a reinforcement; 4. a dry water-blocking tape; 5. a sheath layer.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
Referring to fig. 1, the optical cable with the large core number and the micro-beam tube outdoor comprises a cable core and a sheath layer 5 coated outside the cable core, wherein the cable core comprises a plurality of layers of micro-beam tube optical units 1 which are twisted, the plurality of layers of micro-beam tube optical units 1 are twisted and molded once, each layer of micro-beam tube optical unit 1 is twisted and twisted spirally in the SZ direction, the plurality of layers of micro-beam tube optical units 1 are integrated and twisted together, the density of optical fibers is improved, the size of the optical cable is reduced, the problem that pipeline resources are limited is solved, and the construction cost of the optical cable can be effectively lowered and the construction efficiency is improved by replacing a plurality of optical cables with a single optical cable with the large core number with a plurality of optical cables with the small core number; the microbeam tube optical unit 1 comprises a microbeam tube made of polyolefin low-smoke halogen-free modified material and a plurality of optical fibers coated in the microbeam tube, wherein the polyolefin low-smoke halogen-free modified material is convenient for being torn and stripped by hands and is convenient for stripping the optical fibers; the optical fiber is coated with fiber ointment, the radial water-blocking capacity inside the microbeam tube optical unit 1 is improved, and the reinforcing piece 3 is embedded in the sheath layer 5, so that the overall mechanical performance of the optical cable is further improved.
Specifically, dry water-blocking yarns 2 are filled in gaps among the multiple layers of micro-beam tube optical units 1, the dry water-blocking yarns 2 are twisted and filled along with the micro-beam tube optical units 1, so that the water blocking of the whole section of the optical cable is ensured, and the water-blocking yarns with high expansion rate are adopted in the aspect of material selection of the dry water-blocking yarns 2; the cable core is also coated with a dry water-blocking tape 4, and the dry water-blocking tape 4 is wrapped or longitudinally wrapped on the periphery of the cable core; by filling water-blocking fiber ointment in the micro-beam tube light units 1, filling dry water-blocking tapes 2 in gaps among the micro-beam tube light units 1 and coating the dry water-blocking tapes 4 outside a cable core formed by the micro-beam tube light units 1, the longitudinal and radial directions of the cable core are protected from water by a triple waterproof technology, so that the waterproof performance meets the industrial requirements.
Specifically, a first bundling layer is arranged outside the plurality of layers of micro-bundle tube optical units 1, the first bundling layer comprises a plurality of yarns which are spirally arranged, the yarns bundle the micro-bundle tube optical units 1 into bundles, and bundle the micro-bundle tube optical units 1, so that the micro-bundle tube optical units 1 are prevented from being loose, and the roundness of the cable is ensured; the dry-type water-blocking tape 4 is externally provided with a second binding layer, the second binding layer comprises a plurality of spirally arranged yarns, and the yarns bind the dry-type water-blocking tape 4 into bundles so as to prevent the dry-type water-blocking tape 4 from loosening.
Specifically, the sheath layer 5 is of a flat structure, a plurality of nonmetal reinforcing pieces 3 are embedded in the sheath layer 5, the nonmetal reinforcing pieces 3 are symmetrically arranged on two sides of the sheath layer 5 in the short axis direction, the nonmetal reinforcing pieces 3 are of a flat structure, the nonmetal reinforcing pieces 3 are glass fiber rods, the glass fiber rods are light in weight and high in tensile strength, the relative density of the glass fiber rods is 1.5-2.0, the tensile strength of the glass fiber rods is approximate to that of carbon steel only 1/4-1/5, and the tensile strength, the bending strength and the compression strength of the glass fiber rods can reach more than 400 Mpa; the glass fiber rod is a good corrosion-resistant material, has good resistance to atmosphere, water, acid, alkali, salt with common concentration, various oils and solvents, and is also a good insulating material for manufacturing an insulator and still has good dielectricity under high frequency; the flat glass fiber rod in the embodiment can meet the tensile resistance of the optical cable, the outer diameter of the optical cable is reduced, and the sectional area of the flat glass fiber rod is reduced by about 10% compared with that of the round glass fiber rod embedded optical cable.
Referring to fig. 2, a process manufacturing method of a large-core-number micro-beam tube outdoor optical cable comprises the following steps:
preparation of microbeam tube light unit 1: respectively releasing a plurality of optical fibers from a pay-off rack, keeping the pay-off tension of the optical fibers constant, coating fiber ointment on the outer surfaces of the optical fibers, extruding a polyolefin low-smoke halogen-free modified material to form a micro-beam tube, and cooling the micro-beam tube through a cold water tank to form a micro-beam tube optical unit 1;
preparing a multilayer microbeam tube cable core: the method comprises the steps that a plurality of microbeam tube optical units 1 are introduced into cabling and stranding equipment in a layered mode, meanwhile, dry type water blocking yarns 2 are introduced into gaps among the microbeam tube optical units 1 and synchronously enter the cabling and stranding equipment along with the microbeam tube optical units 1, the microbeam tube optical units 1 are subjected to SZ-direction spiral stranding in a layered mode through the cabling and stranding equipment, and yarn bundling is carried out outside the stranded multi-layer microbeam tube optical units 1 to obtain a cable core; compared with the preparation of a layer stranded optical cable, the manufacturing process is simple and the manufacturing period and cost are reduced by adopting a one-time stranding technology; in addition, the traditional process of twisting around a central reinforcing piece is abandoned, and the micro-beam tube optical units 1 are directly arranged for twisting, so that the outer diameter of the cable core is further reduced, and the duty ratio of the optical fibers in the cable core is improved;
preparing a sheath layer 5: longitudinally wrapping or wrapping the dry-type water-blocking tape 4 outside the cable core, performing yarn binding treatment on the dry-type water-blocking tape 4, introducing the cable core coated with the dry-type water-blocking tape 4 and the non-metal reinforcing part 3 into a sheath plastic extruding machine in parallel, performing extrusion molding to form a sheath layer 5, and cooling to form the micro-bundle tube outdoor optical cable.
Specifically, when the fine oleamen of optic fibre overcoat, adopt fine cream micro-filling volume stability technique, carry out online pressure boost to fine oleamen storage tank, add the pressure release runner simultaneously at the coating mould, adopt toper drainage mode and pressure release runner design, toper drainage mode can reduce and lead to into the fine cream excessive phenomenon of die orifice because of pressure problem, set up the condition that local pressure is unstable and appear in the coating process that the pressure release runner can be solved, can spill over through the pressure release hole, guarantee the homogeneity of moulding-coat in the micro-filling process, and to fine oleamen storage tank and oil charge pipeline on-line heating, guarantee the mobility of fine oleamen.
Specifically, when different microbeam tube optical units 1 are stranded in layers, because the positions of the microbeam tube optical units 1 are different, the excess lengths of the optical fibers arranged in the microbeam tube optical units are also different, in order to control the excess lengths of the optical fibers in the microbeam tube optical units 1 in different layers to be consistent, in this embodiment, when the microbeam tube optical units are paid out, the paying-out tension of the microbeam tube optical units 1 in different layers is controlled, so that the excess lengths of the optical fibers in the microbeam tube optical units 1 are consistent, and the performance requirements of products are met;
in the cabling and stranding method, a once SZ stranding process without a central reinforcement is adopted, 24-112 micro-beam tube optical units 1 and a certain proportion of dry water-blocking yarns 2 are directly distributed and arranged and then subjected to a once stranding technology, the number of stranded cores of a single micro-beam tube 24 core, a single micro-beam tube 36 core or a single micro-beam tube 48 core, and the number of stranded cores of a large-core-number micro-beam tube optical cable can reach 576-5376 cores; the primary cabling stranding equipment adopts a front-end stranding head to be driven by an alternating current servo motor to rotate in the S/Z direction, a rear-stage winch is connected in series and fixed by a steel wire rope, a winch table winch is arranged in sequence through a rear cylinder tensioning function of a winch body, power is transmitted through a front-end stranding head steel wire to drive a rear winch to rotate in the S/Z direction, the number of rotation turns is set according to the production process of the optical cable, the number of rotation turns is generally plus or minus 3-5 turns, and the performance of the optical cable can be stabilized through the implementation of an SZ stranding process.
Specifically, when the sheath layer 5 is extruded, the shape and size of the sheath layer 5 are controlled by adopting a vacuum sizing technology and by means of negative pressure regulation and online monitoring of water pressure.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims (10)

1. A large-core-number microbeam tube outdoor optical cable comprises a cable core and a sheath layer coated outside the cable core, and is characterized in that the cable core comprises a plurality of layers of microbeam tube optical units which are twisted and arranged, the plurality of layers of microbeam tube optical units are twisted and molded once, and each layer of microbeam tube optical unit is twisted and twisted spirally in the SZ direction; the optical unit of the micro-beam tube comprises a micro-beam tube made of polyolefin low-smoke halogen-free modified material and a plurality of optical fibers coated in the micro-beam tube, wherein fiber ointment is coated outside the optical fibers; and a reinforcing piece is embedded in the sheath layer.
2. The high core count microbeam tube outdoor optical cable of claim 1, wherein: and dry-type water-blocking yarns are filled in gaps among the plurality of layers of micro-beam tube optical units, and are twisted and filled together with the micro-beam tube optical units.
3. The high core count microbeam tube outdoor optical cable of claim 1, wherein: and a first bundling layer is arranged outside the plurality of layers of micro-bundle tube optical units and comprises a plurality of spirally arranged yarns, and the yarns bundle the micro-bundle tube optical units into bundles.
4. The high core count microbeam tube outdoor optical cable of claim 1, wherein: the cable core is further coated with a dry water-blocking tape, and the dry water-blocking tape is wrapped or longitudinally wrapped on the periphery of the cable core.
5. The high core count microbeam tube outdoor optical cable of claim 4, wherein: the dry type water blocking belt is provided with a second bundling layer outside, the second bundling layer comprises a plurality of spirally arranged yarns, and the yarns bundle the dry type water blocking belt.
6. The high core count microbeam tube outdoor optical cable of claim 1, wherein: the sheath layer is flat structure, the sheath in situ inlays and is equipped with many nonmetal stiffeners, many nonmetal stiffener symmetry sets up the both sides in sheath in situ minor axis direction, nonmetal stiffener is flat structure.
7. A process manufacturing method of an outdoor optical cable with a large core number micro-beam tube is characterized by comprising the following steps: the method comprises the following steps:
respectively releasing a plurality of optical fibers from a pay-off rack, keeping the pay-off tension of the optical fibers constant, coating fiber ointment outside the optical fibers, extruding polyolefin low-smoke halogen-free modified materials to form a micro-beam tube, and cooling the micro-beam tube through a cold water tank to form a micro-beam tube optical unit;
the method comprises the following steps of introducing a plurality of microbeam tube optical units into cabling and stranding equipment in a layered mode, introducing dry type water-blocking yarns into gaps among the microbeam tube optical units, synchronously entering the cabling and stranding equipment along with the microbeam tube optical units, carrying out SZ-direction spiral stranding on the microbeam tube optical units in a layered mode through the cabling and stranding equipment, and bundling yarns outside the stranded multi-layer microbeam tube optical units to obtain a cable core;
longitudinally wrapping or wrapping a dry-type water-blocking tape outside the cable core, performing yarn binding treatment on the water-blocking tape, introducing the cable core coated with the dry-type water-blocking tape and the non-metal reinforcing part into a sheath plastic extruding machine in parallel for extrusion molding to form a sheath layer, and cooling to form the micro-beam tube outdoor optical cable.
8. The process manufacturing method of the outdoor optical cable with the large core number of the micro-beam tubes as claimed in claim 7, wherein: the method is characterized in that a fiber ointment micro-filling quantity stability technology is adopted to coat the fiber ointment outside the optical fiber, a fiber ointment storage tank is pressurized on line, a pressure relief flow channel is additionally arranged on a coating die, and the fiber ointment storage tank and an oil filling pipeline are heated on line.
9. The process manufacturing method of the outdoor optical cable with the large core number of the micro-beam tubes as claimed in claim 7, wherein: when a plurality of micro-beam tube optical units are stranded in a layered mode, the paying-off tension of the micro-beam tube optical units in different layers is controlled, and the excess lengths of optical fibers in the micro-beam tube optical units are consistent.
10. The process manufacturing method of the outdoor optical cable with the large core number of the micro-beam tubes as claimed in claim 7, wherein: when the sheath layer is extruded, the shape and the size of the sheath layer are controlled by adopting a vacuum sizing technology and by means of negative pressure regulation and online water pressure monitoring.
CN202111193931.4A 2021-10-13 2021-10-13 Outdoor optical cable with large-core-number micro-beam tube and process manufacturing method thereof Pending CN113866922A (en)

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CN202111193931.4A CN113866922A (en) 2021-10-13 2021-10-13 Outdoor optical cable with large-core-number micro-beam tube and process manufacturing method thereof
FR2210471A FR3128296A1 (en) 2021-10-13 2022-10-12 OUTDOOR OPTICAL CABLE WITH HIGH FIBER COUNT LOOSE MICROTUBE AND METHOD FOR MAKING THE SAME

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CN202111193931.4A CN113866922A (en) 2021-10-13 2021-10-13 Outdoor optical cable with large-core-number micro-beam tube and process manufacturing method thereof

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CN204462483U (en) * 2015-03-20 2015-07-08 西安西古光通信有限公司 A kind of mixed type loose jacketed stranded optical cable
CN207301422U (en) * 2017-09-06 2018-05-01 江苏南方通信科技有限公司 A kind of nonmetallic anti-unfirmly closing optical cable of pancake
CN207249212U (en) * 2017-09-28 2018-04-17 江苏永鼎股份有限公司 A kind of anti-lightning strike optical cable of small-sized nonmetallic anti-bird of introducing protection against rodents
CN108646368A (en) * 2018-07-12 2018-10-12 江苏亨通光电股份有限公司 All dielectric self-supporting microbeam pipe ADSS optical cables
CN109116494A (en) * 2018-10-12 2019-01-01 江苏中天科技股份有限公司 A kind of microbeam pipe optical cable and its manufacturing method
CN110426803A (en) * 2019-08-30 2019-11-08 江苏中天科技股份有限公司 Dry type microbeam optical cable
CN110515168A (en) * 2019-08-30 2019-11-29 江苏中天科技股份有限公司 Easily peelable dry fiber optic micro-pipe and dry type microbeam optical cable
CN110850544A (en) * 2019-12-27 2020-02-28 四川天邑康和通信股份有限公司 Flat indoor and outdoor optical cable and manufacturing method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115343817A (en) * 2022-08-30 2022-11-15 江苏中天科技股份有限公司 Rated breaking force overhead micro-beam optical cable and manufacturing process thereof
CN116560025A (en) * 2023-07-04 2023-08-08 西安西古光通信有限公司 Enhanced optical cable and preparation method thereof

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