CN104730663A - Small-cable-diameter ultra-thin air-blown miniature optical fiber cable and manufacturing technology thereof - Google Patents
Small-cable-diameter ultra-thin air-blown miniature optical fiber cable and manufacturing technology thereof Download PDFInfo
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- CN104730663A CN104730663A CN201510163551.4A CN201510163551A CN104730663A CN 104730663 A CN104730663 A CN 104730663A CN 201510163551 A CN201510163551 A CN 201510163551A CN 104730663 A CN104730663 A CN 104730663A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
- G02B6/4432—Protective covering with fibre reinforcements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4479—Manufacturing methods of optical cables
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The invention discloses a small-cable-diameter ultra-thin air-blown miniature optical fiber cable and a manufacturing technology thereof and relates to the technical field of communication cables. The small-cable-diameter ultra-thin air-blown miniature optical fiber cable comprises loose tubes, fiber paste, cable paste, optical fibers and an outer sheath. The three loose tubes are arranged inside the outer sheath, the optical fibers are arranged in the loose tubes, the parts between the loose tubes and the optical fibers are filled with the fiber paste, the part between the loose tubes and the outer sheath is filled with the cable paste, stranded units composed of the loose tubes and the optical fibers are hinged mutually to form cable cores, strengthened high-hardness PBT plastic loose tubes are adopted as the loose tubes, and a corrugated or sawtooth-shaped polyethylene outer sheath is adopted as the outer sheath. The outer diameter and the self-weight of the miniature cable are greatly reduced, the mechanical performance is improved, cost is lowered, the air blowing laying distance is fully enlarged, the service life of the optical cable is fully prolonged, construction laying is facilitated, and the obvious market competitiveness is achieved.
Description
Technical field
What the present invention relates to is communications optical cable technical field, is specifically related to the ultra-fine air-blowing micro-optical fiber optical cable in little cable footpath and manufacture craft thereof.
Background technology
Communication network is while development, also new requirement is constantly proposed to cable manufactures, the structure of optical cable more and more depends on the environment of use and the specific requirement of construction, the emphasis that optical cable will be built from now on will along with Access Network, the construction of the local network of users constantly launches, cable configuration and the operating technique of a new generation also have a series of new change, and Microtubule micro cable technology completely eliminates construction Optical Transmission Network OTN FTTC inside, " last mile " access " cost bottleneck " of each layer to building, the application of Microtubule micro cable technology in Metropolitan Area Network (MAN) and access network construction will be widely.
Traditional layer-twisted type air-blowing micro-cable, due to the restriction of technology, usually adopts common GYTY or GYFTY structure, is reached the object of the reduction of cable outer diameter, the compact of structure and manufacturing cost by suitable technical arrangement plan and controlling, if Fig. 1 is a kind of common layer-twisted type air-blowing micro-cable structure, this product structure is mainly the surrounding that several Loose tube 1 (usual more than 4) are stranded in central reinforce member 7, form a cable core, if desired can wrapped nonmetal reinforcement material 6, the oversheath 5 of outermost layer extruded polyethylene, but this structure is for the air-blowing micro-cable below 72 cores, product outside dimension is larger, and cable is heavy larger, add manufacturing cost and construction laid down cost, have impact on the whole competitiveness of product, under current process conditions, the reduction being realized product external diameter by reduction casing diameter and oversheath wall thickness cannot be made a breakthrough further, therefore the innovation of air-blowing micro-cable product has been placed in product structure and raw-material innovation by existing research and development technology personnel.
In order to solve the problem, design a kind of little cable footpath ultra-fine air-blowing micro-optical fiber optical cable or necessary.
Summary of the invention
For the deficiency that prior art exists, the present invention seeks to be to provide the ultra-fine air-blowing micro-optical fiber optical cable in a kind of little cable footpath and manufacture craft thereof, structure is simple, reasonable in design, greatly reduce external diameter and the deadweight of micro-cable, elevating gear performance, reduce costs, abundant raising air-blown installation distance and cable lifetime, convenient construction lays, and has the significant market competitiveness.
To achieve these goals, the present invention realizes by the following technical solutions: the ultra-fine air-blowing micro-optical fiber optical cable in little cable footpath, comprise Loose tube, fine cream, cable cream, optical fiber and oversheath, oversheath inside is provided with three Loose tube, Loose tube inside is provided with optical fiber, fine cream is filled with between Loose tube and optical fiber, cable cream is filled with between Loose tube and oversheath, the stranded unit that Loose tube and optical fiber form is hinged formation cable core, and Loose tube outside can be provided with the enhancement Layer of nonmetallic materials as required.
As preferably, described Loose tube adopts reinforced high rigidity PBT plastic Loose tube, and casing wall thickness is reduced greatly, simultaneously the requirement of the anti-collapse property retention technology of sleeve pipe.
As preferably, described oversheath adopts corrugated or zigzag outer protective polyethylene cover, can reduce with the friction area of tube wall and then reduce frictional resistance, microflute type appearance also has the micro-cable of increase and high-speed air contact area simultaneously, and then improves the advantage of drag.
As preferably, the core number of described optical fiber is 12 cores or 24 cores, and optical fiber adopts 200um small diameter fiber, thus the dutycycle of optical fiber is reduced greatly, facilitates the reduction of cable size.
The manufacture craft of the ultra-fine air-blowing micro-optical fiber optical cable in a kind of above-mentioned little cable footpath, its technique is: first carry out optical fiber and join fibre, and to optical fiber coloring, 12 small diameter fiber are moulded operation by its bale breaking in Loose tube by cover, when stranding by stranded together with certain pitch for individual stranded unit, without reinforcement in the middle of cable core, outside Loose tube, nonmetal reinforcement material can be placed with, and extrude microflute type outer protective polyethylene at outermost layer and overlap, finally detect outbound.
Beneficial effect of the present invention: the air-blowing micro-cable being less than 72 cores mainly for core number, adopt three stranded unit stranded, non-stop layer reinforcement in stranded unit, not only can well solve the remaining long problem of Loose tube inner fiber, the mechanical property of effective improving product, and the reduction of product external diameter can meet the high request of Ge great operator for pipeline utilization factor, effectively reduces cost of products, solve fiber cable branch, to problems such as families; Simultaneously by the improvement of product surface structure, fully improve air-blown installation distance and cable lifetime, making significant contribution for netting fusion construction more, promoting the development of telecommunications.
Accompanying drawing explanation
The present invention is described in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is the structural representation of background technology;
Fig. 2 is structural representation of the present invention;
Fig. 3 is process chart of the present invention.
Embodiment
The technological means realized for making the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with embodiment, setting forth the present invention further.
With reference to Fig. 2-3, this embodiment is by the following technical solutions: the ultra-fine air-blowing micro-optical fiber optical cable in little cable footpath, comprise Loose tube 1, fine cream 2, cable cream 3, optical fiber 4 and oversheath 5, oversheath 5 inside is provided with three Loose tube 1, Loose tube 1 inside is provided with optical fiber 4, fine cream 2 is filled with between Loose tube 1 and optical fiber 4, cable cream 3 is filled with between Loose tube 1 and oversheath 5, the stranded unit that Loose tube 1 and optical fiber 4 form is hinged formation cable core, and Loose tube 1 outer setting has the enhancement Layer 6 of nonmetallic materials.
It should be noted that, described Loose tube 1 adopts reinforced high rigidity PBT plastic Loose tube, its thermal deformation and post shrinkage are all less, can greatly reduce sleeve outer and casing wall thickness, ensure that the anti-collapse performance of Loose tube 1 meets standard-required, the use of novel Loose tube material simultaneously, make sleeve pipe comparatively common material have more advantage, both there is higher rigidity and toughness, also had the ability of higher high temperature deformation resistance and anti-strain cracking; Oversheath 5 adopts the outer protective polyethylene cover of microflute type high density lower shrinkage, makes micro-cable have good friction resistant ability and good temperature performance, makes micro-cable have suitable rigidity simultaneously.
It should be noted that, described optical fiber 4 can select conventional fiber or small diameter fiber, as selected 200um small diameter fiber, the use of small diameter fiber, reduce the dutycycle of optical fiber 4 in Loose tube 1, while further reducing product external diameter, the optical fiber 4 be conducive in Loose tube 1 keeps long more than suitable secondary, ensures product mechanical property and temperature performance.
In addition, described oversheath 5 adopts the corrugated or zigzag appearance of class effectively to improve the air-blowing performance of micro-cable, micro-cable is made in microtubule, to be in suspended state all the time in air-blowing process, reduce the friction area of micro-cable and microtubule inwall in air-blowing process and then reduce frictional resistance, the contact area of micro-cable and high-speed air can be increased simultaneously, improve drag, thus fully improve air-blown installation distance, eliminate the friction damage to laying microtubule simultaneously, decrease the infringement to micro-cable, effectively improve the serviceable life of optical cable.
This embodiment is in structured design process, mainly consider following content: (1) is for 72 cores and following air-blowing micro-cable product, adopt traditional structure can cause the lifting of cost and the waste of resource, so the structure that employing three stranded unit of innovation are stranded, non-stop layer reinforcement in stranded unit, can reduce external diameter and the deadweight of micro-cable greatly.
(2) select the reinforced high rigidity PBT material of excellent performance, casing wall thickness is reduced greatly, simultaneously the requirement of the anti-collapse property retention technology of sleeve pipe.
(3) high density lower shrinkage sheath material is adopted, product appearance adopts special-shaped appearance, can reduce with the friction area of tube wall and then reduce frictional resistance, microflute type appearance also has the micro-cable of increase and high-speed air contact area simultaneously, and then improves the advantage of drag.
This embodiment cable core adopts the direct stranded mode of Unit three, maximum core number can reach 72 cores, the structure of non-stop layer reinforcement can reduce product deadweight and outside dimension greatly, but because cable core rigidity is less, so need to guarantee that cable core reaches standard-required by control bundle yarn binding tension and binding mode; In process of production, because Loose tube 1 wall thickness itself is thinner, easily produce and prick yarn print situation, so adopt high speed Minimal Tension cable-former when producing, the same some bundling machine controlled by PLC, ensures that yarn-binding tension is stablized controlled, thus ensures that pitch is stable and avoid pricking the problem generations such as yarn print, another employing lower shrinkage pricks yarn, require that it is at 177 DEG C, 10 minutes, dry-hot shrinkage≤5%, reduce high temperature after sheath to prick yarn and shrinks the bundle yarn caused and shrink and press sleeve pipe, damage the quality problems of optical fiber.
This embodiment passes through employing and the technology controlling and process of innovation structure, obviously can reduce the external diameter of air-blowing micro-cable, reduce product deadweight and raw-material use, improve limited conduit resource utilization ratio, and cycle and construction cost are laid in reduction greatly, lower compared with the cost of products of identical traffic capacity, and convenient construction lays, and has the significant market competitiveness.
The ultra-fine air-blowing micro-optical fiber optical cable in embodiment 1:36 core little cable footpath with reference to Fig. 2 is, optical fiber 4 core number is 12 cores, first carry out optical fiber 4 headed by its technological process and join fibre, and it is painted to optical fiber 4,12 small diameter fiber are moulded operation by its bale breaking in Loose tube 1 by cover, when stranding by stranded together with certain pitch for 3 stranded unit, without reinforcement in the middle of cable core, nonmetal reinforcement material 6 can be placed with outside Loose tube 1, and extrude microflute type outer protective polyethylene cover 5 at outermost layer, finally detect outbound.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (7)
1. the ultra-fine air-blowing micro-optical fiber optical cable in little cable footpath, it is characterized in that, comprise Loose tube (1), fine cream (2), cable cream (3), optical fiber (4) and oversheath (5), oversheath (5) inside is provided with three Loose tube (1), Loose tube (1) inside is provided with optical fiber (4), fine cream (2) is filled with between Loose tube (1) and optical fiber (4), cable cream (3) is filled with between Loose tube (1) and oversheath (5), the stranded unit that Loose tube (1) and optical fiber (4) form is hinged formation cable core, described Loose tube (1) adopts reinforced high rigidity PBT plastic Loose tube, oversheath (5) adopts microflute type outer protective polyethylene cover, described Loose tube (1) outer setting has the enhancement Layer (6) of nonmetallic materials.
2. the ultra-fine air-blowing micro-optical fiber optical cable in little cable footpath according to claim 1, is characterized in that, the core number of described optical fiber (4) is 12 cores.
3. the ultra-fine air-blowing micro-optical fiber optical cable in little cable footpath according to claim 1, is characterized in that, the core number of described optical fiber (4) is 24 cores.
4. the ultra-fine air-blowing micro-optical fiber optical cable in little cable footpath according to claim 1, is characterized in that, described optical fiber (4) adopts 200um small diameter fiber.
5. the ultra-fine air-blowing micro-optical fiber optical cable in little cable footpath according to claim 1, is characterized in that, described oversheath (5) adopts corrugated oversheath.
6. the ultra-fine air-blowing micro-optical fiber optical cable in little cable footpath according to claim 1, is characterized in that, described oversheath (5) adopts serrate oversheath.
7. the manufacture craft of the ultra-fine air-blowing micro-optical fiber optical cable in little cable footpath according to claim 1-6 any one, it is characterized in that, its technique is: first carry out optical fiber and join fibre, and to optical fiber coloring, 12 small diameter fiber are moulded operation by its bale breaking in Loose tube by cover, when stranding by stranded together with certain pitch for individual stranded unit, without reinforcement in the middle of cable core, nonmetal reinforcement material can be placed with outside Loose tube, and extrude microflute type outer protective polyethylene at outermost layer and overlap, finally detect outbound.
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| CN201510163551.4A CN104730663A (en) | 2015-04-08 | 2015-04-08 | Small-cable-diameter ultra-thin air-blown miniature optical fiber cable and manufacturing technology thereof |
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| CN201510163551.4A CN104730663A (en) | 2015-04-08 | 2015-04-08 | Small-cable-diameter ultra-thin air-blown miniature optical fiber cable and manufacturing technology thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105278066A (en) * | 2015-11-17 | 2016-01-27 | 江苏亨通光电股份有限公司 | Double layer co-extrusion method for extremely micro air-blowing optical cable, and the extremely micro air-blowing optical cable |
| CN105353484A (en) * | 2015-12-16 | 2016-02-24 | 南京华信藤仓光通信有限公司 | Optical cable with large core number |
| CN106125234A (en) * | 2016-08-23 | 2016-11-16 | 江苏亨通光电股份有限公司 | A kind of large core number little cable footpath anti-ant air-blowing micro-cable and processing technology thereof |
| CN106125239A (en) * | 2016-08-29 | 2016-11-16 | 江苏亨通光电股份有限公司 | The easily branched optical cable of large core number high-performance optical unit and manufacture method thereof |
| CN109061822A (en) * | 2018-09-26 | 2018-12-21 | 江苏亨通光电股份有限公司 | A kind of ultra-fine ant proof air-blowing optical cable and preparation method thereof |
| CN109298495A (en) * | 2018-12-03 | 2019-02-01 | 江苏中天科技股份有限公司 | Large core number air-blowing micro-cable based on fiber bundle structure |
| CN110045473A (en) * | 2019-05-08 | 2019-07-23 | 成都亨通光通信有限公司 | A kind of light-duty high fine density low friction pipeline cable of 5G |
| CN110221393B (en) * | 2019-06-27 | 2020-11-06 | 烽火通信科技股份有限公司 | Air-blowing traction device for loose tube and production line |
| CN112363285A (en) * | 2020-11-11 | 2021-02-12 | 江苏亨通光电股份有限公司 | Miniaturized optical cable for pipeline and construction method thereof |
| CN114994844A (en) * | 2022-05-26 | 2022-09-02 | 宏安集团有限公司 | Double-color strip all-dielectric self-supporting optical cable |
| WO2024125365A1 (en) * | 2022-12-16 | 2024-06-20 | 长飞光纤光缆股份有限公司 | Air blown optical cable suitable for high-temperature installation working environment and construction method therefor |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105278066A (en) * | 2015-11-17 | 2016-01-27 | 江苏亨通光电股份有限公司 | Double layer co-extrusion method for extremely micro air-blowing optical cable, and the extremely micro air-blowing optical cable |
| CN105353484A (en) * | 2015-12-16 | 2016-02-24 | 南京华信藤仓光通信有限公司 | Optical cable with large core number |
| CN106125234A (en) * | 2016-08-23 | 2016-11-16 | 江苏亨通光电股份有限公司 | A kind of large core number little cable footpath anti-ant air-blowing micro-cable and processing technology thereof |
| CN106125239A (en) * | 2016-08-29 | 2016-11-16 | 江苏亨通光电股份有限公司 | The easily branched optical cable of large core number high-performance optical unit and manufacture method thereof |
| CN109061822A (en) * | 2018-09-26 | 2018-12-21 | 江苏亨通光电股份有限公司 | A kind of ultra-fine ant proof air-blowing optical cable and preparation method thereof |
| CN109298495A (en) * | 2018-12-03 | 2019-02-01 | 江苏中天科技股份有限公司 | Large core number air-blowing micro-cable based on fiber bundle structure |
| CN110045473A (en) * | 2019-05-08 | 2019-07-23 | 成都亨通光通信有限公司 | A kind of light-duty high fine density low friction pipeline cable of 5G |
| CN110221393B (en) * | 2019-06-27 | 2020-11-06 | 烽火通信科技股份有限公司 | Air-blowing traction device for loose tube and production line |
| CN112363285A (en) * | 2020-11-11 | 2021-02-12 | 江苏亨通光电股份有限公司 | Miniaturized optical cable for pipeline and construction method thereof |
| CN114994844A (en) * | 2022-05-26 | 2022-09-02 | 宏安集团有限公司 | Double-color strip all-dielectric self-supporting optical cable |
| WO2024125365A1 (en) * | 2022-12-16 | 2024-06-20 | 长飞光纤光缆股份有限公司 | Air blown optical cable suitable for high-temperature installation working environment and construction method therefor |
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