CN105629406A - Light-duty overhead optical cable - Google Patents
Light-duty overhead optical cable Download PDFInfo
- Publication number
- CN105629406A CN105629406A CN201610018210.2A CN201610018210A CN105629406A CN 105629406 A CN105629406 A CN 105629406A CN 201610018210 A CN201610018210 A CN 201610018210A CN 105629406 A CN105629406 A CN 105629406A
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- CN
- China
- Prior art keywords
- optical cable
- light
- cable
- duty
- outer jacket
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- G02B6/44384—Means specially adapted for strengthening or protecting the cables the means comprising water blocking or hydrophobic materials
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Communication Cables (AREA)
Abstract
The invention belongs to the optical cable technology field, and relates to a light-duty overhead optical cable. 2-12 optical fibers and 2 water blocking filaments are placed in a loose sleeving in a straight manner; 3-48 optical fiber assemblies are stranded into a circular section with a center reinforcement member as a center; a composite wrapping table is utilized to wrap after cable paste is filled to constitute a cable core of the light-duty overhead optical cable; an inner protection layer and an outer protection layer 8 successively wrappe the composite wrapping tape layer of the cable core to constitute a light-duty overhead optical cable; and the inner protection layer is a non-solid layer. The material of the light-duty overhead optical cable is polyethylene after foaming, which reduces the unit weight of the optical cable; the outer protection layer is made of a thin type polyurethane layer which has a low friction coefficient, reduces the unit weight of the optical cable by 50% and reduces the construction cost and the construction difficulty. The invention solves the problems that the current overhead lines are complex, and the processing efficiency of the optical cable is low, the construction and the post-maintenance are difficult. The light-duty overhead optical cable is applicable to the overhead optical cable of the city optical communication system.
Description
Technical field
The invention belongs to optical cable technology field, particularly to a kind of light-duty aerial optical cable.
Background technology
In recent years, urban network and Access Network development are swift and violent, and the construction of 4G net, including the 5G net being recently proposed, increasingly constitutes the focus of each operator contention, strengthens the input to networking one after another, exaggerate self market share.
The crisscross hash phenomenon of current overhead transmission line is relatively general, the working (machining) efficiency of optical cable, construct, be delivered for use date, later maintenance etc. become a difficult problem. It addition, the construction of existing common aerial optical cable, it is necessary to being suspended on steel wire by several hooks by optical cable, efficiency of construction is had a greatly reduced quality, and also add workmen's risk. Therefore city optical communication system needs a kind of light-duty aerial optical cable.
Summary of the invention
The invention aims to the problem described in background technology that solves, it is provided that a kind of light-duty aerial optical cable, it is characterised in that light-duty aerial optical cable includes cable core, composite wrapping tape layer 6, sheath 7 and outer jacket 8; Directly put 2��12 optical fiber in Loose tube 4 and 2 silks 1 that block water form optical fiber component, article 3��48, optical fiber component is twisted into circular cross-section centered by center reinforcement 3, and form the cable core of light-duty aerial optical cable after filling cable cream 5 again by composite wrapping tape layer 6 cladding, composite wrapping tape layer 6 outer cladding sheath 7 and outer jacket 8 successively at cable core constitute light-duty aerial optical cable;
The external diameter of described Loose tube 4 is 1.35mm��1.45mm, and wall thickness is 0.27mm��0.30mm, and excess fiber length is (0.3��0.6) ��, and the material of Loose tube 4 is polybutylene terephthalate (PBT);
The material of described composite wrapping tape layer 6 is plastic-coated steel band or the clad strip of plastic-coated aluminium strip, adopts spiral cladding, and in order to improve water preventing ability, cable cream is smeared by the lap-joint in clad strip;
Described sheath 7 is non-solid central layer, and material is the polyethylene after foaming, and the material of outer jacket 8 is polyurethane, and the polyurethane thickness of outer jacket 8 is 0.3mm��0.4mm, and during cladding, the polyethylene foam cladding of sheath 7 and the polyurethane cladding of outer jacket 8 are synchronously performed;
The described silk 1 that blocks water adopts Acusol772 Acusol771 class expanding powder to be composited, and has higher water absorbing properties;
Described center reinforcement 3 is steel wire;
Described optical fiber 2 is general single mode fiber or multimode fibre.
The invention has the beneficial effects as follows: sheath of the present invention adopts polyethylene foamed material, alleviates the Unit Weight of optical cable, and outer jacket is slim layer of polyurethane, make the Unit Weight of optical cable reduce by 50%, reduce construction cost and difficulty of construction; Every sleeve pipe is directly put two silks that block water, oil-free, it is ensured that job site environmental health; Outer jacket uses polyurethane material, and coefficient of friction is low, is beneficial to construction; The silk that blocks water adopts Acusol772 Acusol771 class expanding powder to be composited, and has higher water absorbing properties, and the cable cream of filling is water uptake expansion material, and making optical cable seepage of water is zero, stops laterally infiltration and causes line fault; Optical cable outer jacket and sheath adopt expressing technique simultaneously, shorten the production cycle, improve delivery efficiency.
Accompanying drawing explanation
Fig. 1 is the cross-sectional structure schematic diagram of light-duty aerial optical cable.
In figure, 1--blocks water silk, 2--optical fiber, 3--center reinforcement, 4--Loose tube, 5--cable cream, 6--composite wrapping tape layer, 7--sheath, 8--outer jacket.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is further described.
Fig. 1 is the cross-sectional structure schematic diagram of light-duty aerial optical cable. Embodiment is the light-duty aerial optical cable of layer-twisted type, and optical cable includes cable core, composite wrapping tape layer 6, sheath 7 and outer jacket 8; Directly put 10 optical fiber in Loose tube 4 and 2 silks 1 that block water form optical fiber component, article 20, optical fiber component is twisted into circular cross-section centered by center reinforcement 3, and form the cable core of light-duty aerial optical cable after filling cable cream 5 again by composite wrapping tape layer 6 cladding, composite wrapping tape layer 6 outer cladding sheath 7 and outer jacket 8 successively at cable core constitute light-duty aerial optical cable. The external diameter of Loose tube 4 is 1.4mm, and wall thickness is 0.30mm, and excess fiber length is 0.5 ��, and the material of Loose tube 4 is polybutylene terephthalate (PBT). The material of composite wrapping tape layer 6 is the clad strip of plastic-coated steel band, adopts spiral cladding, and in order to improve water preventing ability, cable cream is smeared by the lap-joint in clad strip. Sheath 7 is non-solid central layer, and material is the polyethylene after foaming, and the material of outer jacket 8 is polyurethane, and the polyurethane thickness of outer jacket 8 is 0.3mm, and during cladding, the polyethylene foam cladding of sheath 7 and the polyurethane cladding of outer jacket 8 are synchronously performed. The silk 1 that blocks water adopts Acusol772 Acusol771 class expanding powder to be composited, and has higher water absorbing properties. Center reinforcement 3 is steel wire. Optical fiber 2 is general single mode fiber.
Sheath of the present invention adopts polyethylene foamed material, alleviates the Unit Weight of optical cable, and outer jacket is slim layer of polyurethane, makes the Unit Weight of optical cable reduce by 50%, reduces construction cost and difficulty of construction; Every sleeve pipe is directly put two silks that block water, oil-free, it is ensured that job site environmental health; Outer jacket uses polyurethane material, and coefficient of friction is low, is beneficial to construction; The silk that blocks water adopts Acusol772 Acusol771 class expanding powder to be composited, and has higher water absorbing properties, and the cable cream of filling is water uptake expansion material, and making optical cable seepage of water is zero, stops laterally infiltration and causes line fault; Optical cable outer jacket and sheath adopt expressing technique simultaneously, shorten the production cycle, improve delivery efficiency. The invention solves the crisscross hash phenomenon of the current overhead transmission line described in background technology relatively general, the difficult problem such as the working (machining) efficiency of optical cable is low, construction and later maintenance difficulty. It addition, in the construction of light-duty aerial optical cable, it is not necessary to by several hooks, optical cable is suspended on steel wire, improves efficiency of construction, reduce workmen's risk. Aerial optical cable suitable in city optical communication system.
Claims (3)
1. a light-duty aerial optical cable, it is characterised in that light-duty aerial optical cable includes cable core, composite wrapping tape layer (6), sheath (7) and outer jacket (8); 2��12 optical fiber (2) and 2 silk that blocks water (1) composition optical fiber components are directly put in Loose tube (4), article 3��48, optical fiber component is twisted into circular cross-section centered by center reinforcement (3), and form the cable core of light-duty aerial optical cable after filling cable cream (5) again by composite wrapping tape layer (6) cladding, the composite wrapping tape layer (6) at cable core is coated with outward sheath (7) successively and outer jacket (8) constitutes light-duty aerial optical cable;
The external diameter of described Loose tube (4) is 1.35mm��1.45mm, and wall thickness is 0.27mm��0.30mm, and excess fiber length is (0.3��0.6) ��, and the material of Loose tube (4) is polybutylene terephthalate (PBT);
The material of described composite wrapping tape layer (6) is plastic-coated steel band or the clad strip of plastic-coated aluminium strip, adopts spiral cladding, and cable cream is smeared by the lap-joint in clad strip;
Described sheath (7) is non-solid central layer, material is the polyethylene after foaming, the material of outer jacket (8) is polyurethane, the polyurethane thickness of outer jacket (8) is 0.3mm��0.4mm, and during cladding, the polyethylene foam cladding of sheath (7) and the polyurethane cladding of outer jacket (8) are synchronously performed;
The described silk that blocks water (1) adopts Acusol772 Acusol771 class expanding powder to be composited.
2. light-duty aerial optical cable according to claim 1, it is characterised in that described center reinforcement (3) is steel wire.
3. light-duty aerial optical cable according to claim 1, it is characterised in that described optical fiber (2) is general single mode fiber or multimode fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610018210.2A CN105629406A (en) | 2016-01-12 | 2016-01-12 | Light-duty overhead optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610018210.2A CN105629406A (en) | 2016-01-12 | 2016-01-12 | Light-duty overhead optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105629406A true CN105629406A (en) | 2016-06-01 |
Family
ID=56044511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610018210.2A Pending CN105629406A (en) | 2016-01-12 | 2016-01-12 | Light-duty overhead optical cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105629406A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106772849A (en) * | 2016-12-14 | 2017-05-31 | 江苏俊知光电通信有限公司 | The oversheath material of micro optical cable and preparation method thereof and the micro optical cable |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101101353A (en) * | 2007-07-23 | 2008-01-09 | 通鼎集团有限公司 | Sensing optical fiber |
| JP4058360B2 (en) * | 2003-02-13 | 2008-03-05 | 株式会社フジクラ | cable |
| CN102681114A (en) * | 2011-03-09 | 2012-09-19 | 东捷光电科技(苏州)有限公司 | Armored sensing optical cable |
| US20150268430A1 (en) * | 2014-03-18 | 2015-09-24 | Corning Optical Communications LLC | Jacket for a fiber optic cable |
| CN205301669U (en) * | 2016-01-12 | 2016-06-08 | 北京亨通斯博通讯科技有限公司 | Light -duty aerial fiber cable |
-
2016
- 2016-01-12 CN CN201610018210.2A patent/CN105629406A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4058360B2 (en) * | 2003-02-13 | 2008-03-05 | 株式会社フジクラ | cable |
| CN101101353A (en) * | 2007-07-23 | 2008-01-09 | 通鼎集团有限公司 | Sensing optical fiber |
| CN102681114A (en) * | 2011-03-09 | 2012-09-19 | 东捷光电科技(苏州)有限公司 | Armored sensing optical cable |
| US20150268430A1 (en) * | 2014-03-18 | 2015-09-24 | Corning Optical Communications LLC | Jacket for a fiber optic cable |
| CN205301669U (en) * | 2016-01-12 | 2016-06-08 | 北京亨通斯博通讯科技有限公司 | Light -duty aerial fiber cable |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106772849A (en) * | 2016-12-14 | 2017-05-31 | 江苏俊知光电通信有限公司 | The oversheath material of micro optical cable and preparation method thereof and the micro optical cable |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160601 |
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| WD01 | Invention patent application deemed withdrawn after publication |