CN110426803A - Dry type microbeam optical cable - Google Patents
Dry type microbeam optical cable Download PDFInfo
- Publication number
- CN110426803A CN110426803A CN201910818373.2A CN201910818373A CN110426803A CN 110426803 A CN110426803 A CN 110426803A CN 201910818373 A CN201910818373 A CN 201910818373A CN 110426803 A CN110426803 A CN 110426803A
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- China
- Prior art keywords
- micro
- pipe
- optical cable
- water blocking
- dry type
- 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.)
- Granted
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- 230000003287 optical effect Effects 0.000 title claims abstract description 70
- 239000013307 optical fiber Substances 0.000 claims abstract description 102
- 239000000835 fiber Substances 0.000 claims abstract description 98
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 86
- 239000000463 material Substances 0.000 claims abstract description 73
- 230000000903 blocking effect Effects 0.000 claims abstract description 71
- 238000003780 insertion Methods 0.000 claims abstract description 5
- 230000037431 insertion Effects 0.000 claims abstract description 5
- 229920000728 polyester Polymers 0.000 claims description 22
- 239000000203 mixture Substances 0.000 claims description 18
- 239000000843 powder Substances 0.000 claims description 15
- 229920000098 polyolefin Polymers 0.000 claims description 14
- QQONPFPTGQHPMA-UHFFFAOYSA-N Propene Chemical compound CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 12
- 238000010521 absorption reaction Methods 0.000 claims description 12
- 239000011256 inorganic filler Substances 0.000 claims description 12
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 12
- -1 polyethylene Polymers 0.000 claims description 11
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 10
- 239000005977 Ethylene Substances 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 229920006231 aramid fiber Polymers 0.000 claims description 10
- 229920001577 copolymer Polymers 0.000 claims description 8
- 239000003365 glass fiber Substances 0.000 claims description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 6
- 239000000178 monomer Substances 0.000 claims description 6
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 5
- 150000001252 acrylic acid derivatives Chemical class 0.000 claims description 5
- 238000012937 correction Methods 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 claims description 4
- 229920002125 Sokalan® Polymers 0.000 claims description 4
- 229920001038 ethylene copolymer Polymers 0.000 claims description 4
- 229920006225 ethylene-methyl acrylate Polymers 0.000 claims description 4
- 239000004584 polyacrylic acid Substances 0.000 claims description 4
- QYMGIIIPAFAFRX-UHFFFAOYSA-N butyl prop-2-enoate;ethene Chemical compound C=C.CCCCOC(=O)C=C QYMGIIIPAFAFRX-UHFFFAOYSA-N 0.000 claims description 3
- 239000004927 clay Substances 0.000 claims description 3
- 229920006245 ethylene-butyl acrylate Polymers 0.000 claims description 3
- 239000011152 fibreglass Substances 0.000 claims description 3
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 238000004078 waterproofing Methods 0.000 claims description 3
- 239000005995 Aluminium silicate Substances 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 150000001336 alkenes Chemical class 0.000 claims description 2
- 235000012211 aluminium silicate Nutrition 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 239000003610 charcoal Substances 0.000 claims 1
- 239000002674 ointment Substances 0.000 abstract description 15
- 238000010276 construction Methods 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 19
- 238000004040 coloring Methods 0.000 description 12
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical class [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 6
- 229920001903 high density polyethylene Polymers 0.000 description 6
- 239000004700 high-density polyethylene Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 102000029749 Microtubule Human genes 0.000 description 4
- 108091022875 Microtubule Proteins 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 210000004688 microtubule Anatomy 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 239000006229 carbon black Substances 0.000 description 3
- 239000000395 magnesium oxide Substances 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 2
- 229920004933 Terylene® Polymers 0.000 description 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 2
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 229910000428 cobalt oxide Inorganic materials 0.000 description 2
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920000578 graft copolymer Polymers 0.000 description 2
- 229920000092 linear low density polyethylene Polymers 0.000 description 2
- 239000004707 linear low-density polyethylene Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920002545 silicone oil Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229920006242 ethylene acrylic acid copolymer Polymers 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 229910052622 kaolinite Inorganic materials 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 229920001179 medium density polyethylene Polymers 0.000 description 1
- 239000004701 medium-density polyethylene Substances 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000006223 plastic coating Substances 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0869—Acids or derivatives thereof
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
Abstract
The present invention provides a kind of dry type microbeam optical cable, several reinforcers in oversheath and insertion oversheath including micro-pipe core and the periphery for being coated on micro-pipe core, the micro-pipe core includes multiple grafting micro-pipes and several water blocking yarns, and several water blocking yarns are filled in the gap between grafting micro-pipe and grafting micro-pipe；The grafting micro-pipe includes around band and by the multiple dry fiber optic micro-pipes wrapped up around band and several water blocking yarns, and each dry fiber optic micro-pipe is made of micro-pipe sheath with interior water blocking yarn and optical fiber is wrapped in.The present invention uses dry type structure, and no ointment filling, environment friendly and pollution-free, high construction efficiency is quick；After combining several dry fiber optic micro-pipe graftings around band, density of optic fibre and optical fiber can be effectively improved in the space accounting of sheath lumen；Dry type material water-proof material varies with temperature performance and stablizes, and optical fiber transmission property does not vary with temperature and changes, and performance is stablized.
Description
Technical field
The present invention relates to optical cable technology fields, particularly relate to a kind of dry type microbeam optical cable.
Background technique
Microbeam optical cable is generally used for city backbone network, generallys use yard piping laying or aerial laying, therefore to optical cable
Block-water performance there is special requirement, optical cable must be prevented from longitudinal infiltration.Microbeam optical cable primary structure includes microbeam pipe and outer
Sheath, interior microbeam pipe includes at least 1 optical fiber, and sheath is embedded at least 1 reinforcements.It blocks water to meet optical cable total cross-section,
Not only the cavity needs outside microbeam pipe between sheath block water, and material water-proof material is also filled in microbeam pipe.Under normal conditions, micro-
Material water-proof material is filled using ointment in beam tube, and comprising at least one liquid and a kind of thickener in ointment, the liquid is silicon
Or mixtures thereof oil, fluorinated oil, the thickener are or mixtures thereof silica, bentonite, polytetrafluoroethylene (PTFE).
Using ointment filling, there may be following problems: 1) silicone oil is mainly contained in ointment, silicone oil is general chemical synthesis
Product, natural degradation ability is lower, long-term to be easy pollution environment；2) during optical cable is installed and used, ointment cleaning trouble, usually
It needs to handle using organic solvent, not environmentally and low efficiency；3) ointment is contacted with optical fiber coloring layer, easily cause coloring layer fall off or
Migration, it is difficult to distinguish, cause to connect difficult；4) when temperature change, the viscosity of ointment can change, and may result in optical fiber and decline
Subtract and gets higher；5) ointment and microbeam tube boot contact area are big, and ointment packing volume is more than the 85% of microbeam bore, for a long time may
Jacket leak phenomenon occurs.6) it is directly twisted that more microbeam pipes are generallyd use in the prior art, and product density of optic fibre is lower, outer diameter
Greatly.
Summary of the invention
In view of the foregoing, it is necessary to which a kind of improved dry type microbeam optical cable is provided.
Technical solution provided by the invention are as follows: a kind of dry type microbeam optical cable including micro-pipe core and is coated on micro-pipe core
Several reinforcers in the oversheath of periphery and insertion oversheath, the micro-pipe core include multiple grafting micro-pipes and several block water
Yarn, several water blocking yarns are filled in the gap between grafting micro-pipe and grafting micro-pipe；The grafting micro-pipe include around band and by
Multiple dry fiber optic micro-pipes around band package and several water blocking yarns, each dry fiber optic micro-pipe is by micro-pipe sheath and package
Water blocking yarn and optical fiber inside forms, density of optic fibre in the optical cable inner cavity are as follows:
Wherein: density of optic fibre unit is F/mm2；N is number of fibers；K is correction factor, value 0.5-1.0mm；M1For around
Cable-tie thickness, unit mm, N1For around band quantity；N2For water blocking yarn equivalent amount；N3For dry fiber optic micro-pipe quantity, D2It is dry
Formula optical fiber micro-pipe outer diameter, unit mm.
Further, density of optic fibre is 3.8-10F/mm in the optical cable inner cavity2。
Further, several optical fiber equivalent circle diameter accounting in the micro-pipe sheath lumen in the dry fiber optic micro-pipe
Than less than 90% and be more than or equal to 70%, the water blocking yarn account for micro-pipe sheath lumen surface area 20% and within.
Further, several optical fiber equivalent circle diameter accounting in the micro-pipe sheath lumen in the dry fiber optic micro-pipe
Than between 70%-80%.
Further, the material of the micro-pipe sheath includes olefin polymer and inorganic filler, and inorganic filler accounts for micro-pipe shield
Cover the 0.1%~20% of all components gross mass；The olefin polymer includes the first olefin polymer or ethylene/propene and its
His monomer copolymer or other types polymer, wherein the first olefin polymer includes linear low density polyethylene, poly- 4- first
One of base -1- amylene or ethylene propylene copolymer；Wherein ethylene/propene and other monomers copolymer include ethylene -ol acid
Ethylene copolymer, ethylene-methyl acrylate copolymer, one or more mixtures in ethylene-butyl acrylate copolymer；It is described
Inorganic filler includes hydroxide, hydrous oxide, metal salt or their mixture or carbon black, silica, kaolinite
Soil, clay or their mixture；The micro-pipe sheath with a thickness of 0.1-0.2mm.Wherein hydroxide may include hydroxide
Aluminium, magnesium hydroxide, hydrous oxide can be hydrated alumina, hydrocarbonate of magnesia, metal salt can be zinc oxide, calcium carbonate,
Cobalt oxide etc..
It further, further include the enhancement layer of coaxial arrangement, the enhancement layer between the micro-pipe core and the oversheath
Material include one in any one of aramid fiber, glass fibre yarn or polyester yarn or water blocking yarn and aramid fiber, glass fibre yarn or polyester yarn
Kind or a variety of combinations.
It further, further include the waterstop of coaxial arrangement, the waterstop between the micro-pipe core and the oversheath
For two-sided waterstop.
Further, further include several tear ropes of insertion in the waterstop, the material of the tear rope be aramid fiber or
Polyester yarn.
Further, the material of the oversheath is polyolefine material；The reinforcer is density in 2.05~2.15g/
cm3Fiberglass-reinforced plastic lever.
Further, the water blocking yarn for being set to each structure sheaf of micro-pipe in-core is usually water-absorption fiber, can be raw in micro-pipe core
It is fallen during production without water-proofing powder, the water-absorption fiber contains acrylic acid, polyacrylic acid, acrylates or their modified material
Or their mixture.
Compared with prior art, dry type microbeam optical cable provided by the invention uses dry type structure, no ointment filling, ring
Protect pollution-free, high construction efficiency is quick；After combining several dry fiber optic micro-pipe graftings around band, it is close optical fiber can be effectively improved
The space accounting of degree and optical fiber in sheath lumen；Dry type material water-proof material vary with temperature performance stablize, optical fiber transmission property not with
Temperature change and change, performance stablize.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the structural schematic diagram of easily peelable dry fiber optic micro-pipe in an embodiment of the present invention.
Fig. 2 is the cross-section structure one of the dry type microbeam optical cable of micro-tubular structure in application drawing 2.
Fig. 3 is the cross-section structure two of the dry type microbeam optical cable of micro-tubular structure in application drawing 2.
Fig. 4 is the cross-section structure three of the dry type microbeam optical cable of micro-tubular structure in application drawing 2.
Fig. 5 is the cross-section structure four of the dry type microbeam optical cable of micro-tubular structure in application drawing 2.
Fig. 6 is the cross-section structure five of the dry type microbeam optical cable of micro-tubular structure in application drawing 2.
Fig. 7 is the cross-section structure six of the dry type microbeam optical cable of micro-tubular structure in application drawing 2.
Description of symbols:
Micro-pipe sheath 1
Optical fiber 2
Dry fiber optic micro-pipe 20
Water blocking yarn 3
Dry type microbeam optical cable 100
Oversheath 30
Reinforcer 31
Waterstop 40
Tear rope 41
Enhancement layer 50
Around band 80
Grafting micro-pipe 82
Micro-pipe core 84
The embodiment of the present invention that the following detailed description will be further explained with reference to the above drawings.
Specific embodiment
In order to be more clearly understood that the above objects, features, and advantages of the embodiment of the present invention, with reference to the accompanying drawing and
The present invention will be described in detail for specific embodiment.It should be noted that in the absence of conflict, the embodiment party of the application
Feature in formula can be combined with each other.
Embodiment in the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, described reality
Applying mode is only some embodiments of the invention, rather than whole embodiments.Based on the embodiment in the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work, belongs to this hair
The range of bright embodiment protection.
" SZ strand " is to control to strand herein.The strand of process to being divided into left-hand and dextrad, left-hand likeness in form " S " be also known as S to,
Dextrad likeness in form " Z " is also known as Z-direction.
Unless otherwise defined, all technical and scientific terms used herein and the technology for belonging to the embodiment of the present invention
The normally understood meaning of the technical staff in field is identical.Term as used herein in the specification of the present invention is intended merely to
The purpose of specific embodiment is described, it is not intended that in the limitation embodiment of the present invention.
Referring to Fig. 1, the present invention provides a kind of easily peelable dry fiber optic micro-pipe 20, including several optical fiber 2, several block water
Yarn 3 and micro-pipe sheath 1 form, and wherein micro-pipe sheath 1 is coated on outside several optical fiber 2 and several water blocking yarns 3,1 inner cavity of micro-pipe sheath
With non-filler in the gap of several optical fiber 2 and/or several water blocking yarns 3, water blocking yarn accounts for intracavity space 20% and following.Be free of
There is ointment filling, coloring layer is avoided to fall off or migrate, is easier to construct so that connecting, environment-friendly high-efficiency.
Optical fiber 2, usually single mode optical fiber, surface layer are equipped with protective coating；There is multifiber 2 in each micro-pipe sheath 1
When, it can be distinguished by colouring, that is, form colored optical fiber.The diameter of simple optical fiber 2 can be nominal 250 μm, 200 μm or
180μm.Multifiber 2 is usually SZ twisted in micro-pipe sheath 1.Multifiber equivalent diameter formula are as follows: D=1.16 × n1/2
× d, wherein n is number of fibers, and d is colored optical fiber diameter.
It include at least 1 water blocking yarn 3 in the dry fiber optic micro-pipe 20, the thread density that blocks water is usually in 200-800Denier
(fiber number is also known as denier, i.e. danier number), tensile strength >=12N, elongation at break >=12%, percent thermal shrinkage≤3.5%, expansion
Rate >=25ml/g/min, expansion rate >=30ml/g, moisture content≤8%.Water blocking yarn 3 is by water-absorbing resin or water-absorption fiber on basis
It prepares, is fallen in optical fiber micro-pipe production process without water-proofing powder, wherein water-absorbing resin and water-absorption fiber after technique solidifies on yarn
Acrylic acid, polyacrylic acid, acrylates or their modified material or their mixture are usually contained, wherein modified material can
To be acrylic acid graft copolymer, such as acrylic graft-modified polyethylene terephthalate.The water blocking yarn 3 accounts for micro-pipe sheath
Surface of internal cavity product 20% and within.
Micro-pipe sheath 1 with a thickness of 0.1-0.2mm in the dry fiber optic micro-pipe 20；The material of micro-pipe sheath 1 includes alkene
Polymer and inorganic filler, inorganic filler account for the 0.1%~20% of micro-pipe sheath all components gross mass, the olefin polymer
Including the first olefin polymer or ethylene/propene and other monomers copolymer, wherein the first olefin polymer includes linear low close
Spend one of polyethylene, poly- 4-methyl-1-pentene or ethylene propylene copolymer；Wherein ethylene/propene and other monomers are copolymerized
Object includes ethylene -ol acid ethylene copolymer, ethylene-methyl acrylate copolymer, it is a kind of in ethylene-butyl acrylate copolymer or
A variety of mixtures, shore hardness HALess than or equal to 90, optical fiber micro-pipe sheath 1 manually can easily tear off at least 1 meter.The inorganic filler
It can be hydroxide, hydrous oxide, metal salt or their mixture, wherein hydroxide may include aluminium hydroxide, hydrogen
Magnesia, hydrous oxide can be hydrated alumina, hydrocarbonate of magnesia, and metal salt can be zinc oxide, calcium carbonate, cobalt oxide
Deng；The inorganic filler is also possible to carbon black, silica, kaolin, clay etc..Optical fiber equivalent circle diameter accounts in micro-pipe sheath
Ratio X, 70%≤X < 90% of diameter, preferably 70-80%.Wherein inorganic filler reduces the toughness of material, thus optical fiber micro-pipe
Sheath can not easily tear off at least 1 meter by tool.Meanwhile the addition of inorganic filler can reduce the shrinkage of material, above-mentioned ratio
The example controllable material shrinkage < 3% of range, optical fiber micro-pipe are not shunk in connector box, it is ensured that optical cable communication line is logical
Letter is stablized.
The present invention illustrates the structure and performance of easily peelable dry fiber optic micro-pipe 20 below.
Embodiment 1
A kind of fiber number of easily peelable dry fiber optic micro-pipe 20 is 6 cores in this example, as shown in Figure 1.
Have 6 optical fiber in every optical fiber micro-pipe 20,2 color of optical fiber be it is blue, orange, green, brown, grey, white, optical fiber use is G.652D
Optical fiber, fibre coating diameter is 250 μm ± 15 μm after coloring, is twisted in micro-pipe inner fiber using SZ.
It include 1 300D water blocking yarn 3 in every optical fiber micro-pipe 20,3 line density of water blocking yarn is in 30000m/kg, performance type selecting
It is required that: tensile strength >=12N, elongation at break >=12%, percent thermal shrinkage≤3.5%, expansion rate >=25ml/g/min, expansion
Rate >=30ml/g, moisture content≤8%.It is the water-absorption fiber containing acrylates in this example, matrix is mainly terylene or polyamide fibre.
1 wall thickness of micro-pipe sheath is 0.1mm, and 1 material of micro-pipe sheath is linear low density polyethylene and carbon black and silica
Mixture, mass ratio 82:10:8, density be 1.4~1.5g/cm3, tensile strength 12MPa, elongation at break is
140%.The shore hardness H of micro-pipe sheath materialAIt is 84, optical fiber micro-pipe sheath manually can easily tear off 1m.
6 core fibre micro-pipe outer diameters are 1.2 ± 0.1mm, and optical fiber equivalent circle diameter accounts for the 70-80% of micro-pipe sheath internal diameter,
The water blocking yarn accounts for the 10-15% of micro-pipe sheath lumen surface area.
Embodiment 2
A kind of fiber number of easily peelable dry fiber optic micro-pipe 20 is 12 cores in this example.
Have 12 optical fiber 2 in every micro-pipe 20,2 color of optical fiber be blue, orange, green, brown, grey, white, red, black, yellow, purple, powder,
Viridescent, optical fiber is using G.657A2 optical fiber, and fibre coating diameter is 200 μm ± 10 μm after coloring, uses SZ in 20 inner fiber of micro-pipe
It twists.
Include 1 300D water blocking yarn 3 in every micro-pipe 20,3 line density of water blocking yarn is in 30000m/kg, performance requirements of type selecting:
Tensile strength >=12N, elongation at break >=12%, percent thermal shrinkage≤3.5%, expansion rate >=25ml/g/min, expansion rate >=
30ml/g, moisture content≤8%.To solidify the water-absorption fiber for having polyacrylic acid and acrylates in this example, matrix is mainly washed
Synthetic fibre or polyamide fibre.
1 wall thickness of micro-pipe sheath is 0.15mm, and 1 material of micro-pipe sheath is ethylene -ol acid ethylene copolymer and aluminium hydroxide
Mixture, mass ratio 95:5, density is usually in 1.4~1.5g/cm3, tensile strength is usually 12MPa, and elongation at break is
140%.The shore hardness H of 1 material of micro-pipe sheathAIt is 84, optical fiber micro-pipe sheath 1 manually can easily tear off 1m.
For 12 core fibre micro-pipe, 20 outer diameter usually in 1.3 ± 0.1mm, optical fiber equivalent circle diameter accounts for micro-pipe sheath internal diameter
70-80%, the water blocking yarn account for the 12-18% of micro-pipe sheath lumen surface area.
Embodiment 3
A kind of easily peelable dry fiber optic micro-pipe 20,12 core of fiber number.
12 optical fiber 2 in every micro-pipe 20,2 color of optical fiber are blue, orange, green, brown, grey, white, red, black, yellow, purple, powder, blueness
Green, optical fiber 2 is using G.657A2 optical fiber, and fibre coating diameter is 250 μm ± 10 μm after coloring, and optical fiber 2 is adopted in micro-pipe sheath 1
It is twisted with SZ.
It include 1 600D water blocking yarn 3 in every micro-pipe 20,3 density of water blocking yarn is in 15000m/kg, performance requirements of type selecting: anti-
Zhang Qiangdu >=20N, elongation at break >=12%, percent thermal shrinkage≤3.5%, expansion rate >=30ml/g/min, expansion rate >=
40ml/g, moisture content≤8%.It is the water-absorption fiber containing acrylic acid graft copolymer in this example, matrix is mainly terylene or brocade
Synthetic fibre.
1 wall thickness of micro-pipe sheath is 0.2mm, and 1 material of micro-pipe sheath is ethylene-methyl acrylate copolymer and ethylene-propylene
Butyl acrylate copolymer and kaolinic mixture, mass ratio 45:45:10, density is usually in 1.4~1.5g/cm3, tension is strong
Degree is usually 18MPa, elongation at break 210%.The shore hardness H of micro-pipe sheath materialAIt is 89, optical fiber micro-pipe sheath 1 can
Manually easily tear off 1m.
For 12 core fibre micro-pipe, 20 outer diameter usually in 1.5 ± 0.1mm, optical fiber equivalent circle diameter accounts for micro-pipe sheath internal diameter
70-80%, the water blocking yarn account for the 8-16% of micro-pipe sheath lumen surface area.
Following table 1 lists different fibre external diameters and quantity in such dry fiber optic micro-pipe 20, and preferred optical fiber micro-pipe
The numerical value of outer diameter.
Table 1
The shore hardness H of 1 material of micro-pipe sheath in above-mentioned easily peelable dry fiber optic micro-pipe 20AIt, can manually not no more than 90
Micro-pipe sheath is torn off by tool, and firmly small, does not damage optical fiber；Optical fiber micro-pipe minimum bending radius 10mm, does not occur curved
Folding；Ointment is free of in optical fiber micro-pipe 20, material water-proof material uses water blocking yarn, environmental protection, and efficient quick when construction；Light in optical fiber micro-pipe
Fibre, water blocking yarn, micro-pipe sheath compatibility are strong, and the physical and chemical performance of long length fiber is stablized.
Fig. 2, Fig. 3 and Fig. 4 are please referred to, above-mentioned dry fiber optic micro-pipe 20 is applied in microbeam cable configuration by the present invention, system
At dry type microbeam optical cable 100, which is generally used for city backbone network, generallys use yard piping laying or aerial laying.
In a specific basic embodiment, by taking the micro-pipe 20 of 6 core fibres 2 as an example, as shown in Fig. 2, the dry type microbeam
The cross section structure of optical cable 100 includes multiple micro-pipes 20, several water blocking yarns 3 and oversheath 30, and each water blocking yarn 3 is filled in multiple micro-
In gap between pipe 20, and oversheath 30 is embedded in several reinforcers 31.The micro-pipe is above-mentioned easily peelable dry fiber optic micro-pipe
20, its quantity can be 3,6,9,12,15,18,21 or 24 or 30 etc. in an optical cable, specifically
Depending on the size of optical cable and performance requirement, micro-pipe 20 is twisted using spiral in 30 inner cavity of oversheath, is also possible to SZ strand, or
Person is that S is twisted, and forms micro-pipe core 84, is set to the center of optical cable.3 performance of water blocking yarn meets or is higher than " YDT1115.2- communication
Cable and optical cable material water-proof material first part: water blocking yarn " industry standard specification.30 material of oversheath is polyolefine material,
Usually medium density polyethylene or high-density polyethylene material, are also possible to low-smoke halide-free fireproof composite polyolefine material.The reinforcer
31 be usually fiberglass-reinforced plastic lever (abbreviation FRP), and FRP density is in 2.05~2.15g/cm3, stretch and bending strength >=
1100MPa, stretching and bending elastic modulus >=50GPa, elongation at break≤4%, water absorption rate≤0.1%, while having lower
Thermal expansion coefficient 5 × 10-5~6 × 10-5K-1, acid and alkali-resistance and stable chemical performance.To guarantee FRP and oversheath cohesive force, lead to
Often in one layer of organic polymer of surface plastic coating, main component is ethylene acrylic acid co polymer, FRP and sheath taking out force >=50N.
In the structure of aforementioned base optical cable, between stranded multiple optical fiber micro-pipes (micro-pipe core 84) and oversheath 30 also
It can be equipped with an enhancement layer 50 (see Fig. 3 or Fig. 4), which is substantially arranged coaxially with oversheath 30 and micro-pipe core 84.
The enhancement layer 50 can be any one of aramid fiber, glass fibre yarn or polyester yarn, be also possible to aramid fiber and water blocking yarn, glass fibre yarn and resistance
Water yarn or polyester yarn and any in water blocking yarn or their mixture.
In the structure of aforementioned base optical cable, between stranded multiple optical fiber micro-pipes (micro-pipe core 84) and oversheath 50 also
It can be equipped with a waterstop 40 (such as Fig. 3 and Fig. 4), which is substantially arranged coaxially with oversheath 30 and micro-pipe core 84.
The waterstop 40 is usually two-sided waterstop, non-woven by non-woven fabric of polyester fiber-high water absorption expanding material-polyester fiber
Cloth is sequentially compounding, and high water absorption expanding material is combined frequently with crosslinked polyacrylate class expanding powder, and heat-resisting, is free of
Soda acid, chemical-resistance are stablized；Block water tape thickness≤0.25mm, expansion rate >=10mm/min, expansion height >=12mm, anti-tensile
Intensity >=40N/cm, elongation at break >=12%.In other embodiments, which can also embed tear rope 41
(as shown in Figure 4), 41 material of tear rope can be aramid fiber or polyester yarn, line density >=333tex, and tensile strength >=150N is broken
Split elongation >=12%, softening point >=238 DEG C, fusing point >=265 DEG C.
In 100 structure of dry type microbeam optical cable as shown in Figure 4, which includes substantially in coaxial by sandwich layer to outer layer
Micro-pipe core 84, enhancement layer 50, waterstop 40 and the oversheath 30 of setting, wherein there is 24 micro-pipes 20, micro-pipe 20 in micro-pipe core 84
5 water blocking yarns 3 are filled in gap between micro-pipe 20 at random；Each micro-pipe 20 is that 5 twisted optical fiber 2 and 1 piece block water
Yarn 3, and it is wrapped in the composition of micro-pipe sheath 1 of its outer layer；1 tear rope 41 is embedded in waterstop 40, oversheath 30 is radial embedding
Enter 2 reinforcements 31.When 20 quantity of micro-pipe is more than 12, can come by using the color lump or colour circle of spray printing different number into
Row is distinguished.
Embodiment 4
A kind of dry type microbeam optical cable 100, several 144 cores of 2 core of optical fiber, structure are substantially as shown in Figure 4.
(1) 6 optical fiber 2 in every micro-pipe 20,2 color of optical fiber are blue, orange, green, brown, grey, white, optical fiber use G.652D light
Fibre, fibre coating diameter is 250 μm ± 15 μm after coloring, and optical fiber is twisted in micro-pipe using SZ.
(2) include 1 300D water blocking yarn 3 in every micro-pipe 20,3 line density of water blocking yarn in 30000m/kg, tensile strength >=
12N, elongation at break >=12%, percent thermal shrinkage≤3.5%, expansion rate >=25ml/g/min, expansion rate >=30ml/g are aqueous
Rate≤8%.
(3) for 1 wall thickness of micro-pipe sheath generally between 0.1-0.2mm, 1 material of micro-pipe sheath is LSZH material, and density is usual
In 1.4~1.5g/cm3, tensile strength is usually 12MPa, elongation at break 140%.
For 20 outer diameter of (4) 6 core fibre micro-pipe usually in 1.2 ± 0.1mm, optical fiber equivalent circle diameter accounts for micro-pipe sheath internal diameter
70-80%, the water blocking yarn account for the 8-16% of micro-pipe sheath lumen surface area.
(5) micro-pipe 20 is twisted using spiral S in 30 inner cavity of oversheath.
(6) 20 color of micro-pipe be blue, orange, green, brown, grey, white, red, black, yellow, purple, powder, viridescent, it is blue add 1 black ring,
Orange plus 1 black ring, green plus 1 black ring, brown add 1 black ring, grey to add 1 black ring, white plus 1 black
Ring, red plus 1 black ring, black add 1 white ring, yellow to add 1 black ring, purple that 1 black ring, pink colour is added to add 1
Black ring, dark green add 1 black ring.
(7) enhancement layer 50 is aramid fiber and water blocking yarn.
(8) waterstop 40 is two-sided waterstop, and waterstop is with a thickness of 0.2mm, width 30mm, expansion rate >=10mm/
Min, expansion height >=12mm, tensile strength >=40N/cm, elongation at break >=12%.
(9) 41 material of tear rope be polyester yarn, line density 444tex, tensile strength >=150N, elongation at break >=
12%, softening point >=238 DEG C, fusing point >=265 DEG C.
(10) 2 FRP reinforcers 31 are embedded in oversheath 30 in parallel, reinforcer 31 is having a size of 2.0 ± 0.1mm.
(11) 30 material high-density polyethylene material of oversheath, the nominal 2.8mm of oversheath wall thickness.
100 entire outer diameter of (12) 144 core dry type microbeam optical cable is nominal 16.6mm, and density of optic fibre is in optical cable inner cavity
1.52F/mm2。
Embodiment 5
A kind of dry type microbeam optical cable 100,288 core of fiber number.
(1) 12 optical fiber 2 in every micro-pipe 20,2 color of optical fiber be blue, orange, green, brown, grey, white, red, black, yellow, purple, powder,
Viridescent, optical fiber is using G.657A2 optical fiber, and fibre coating diameter is 200 μm ± 10 μm after coloring, and optical fiber 2 uses in micro-pipe 20
SZ is twisted.
(2) include 1 600D water blocking yarn 3 in every micro-pipe 20, the thread density that blocks water in 15000m/kg, tensile strength >=
12N, elongation at break >=12%, percent thermal shrinkage≤3.5%, expansion rate >=25ml/g/min, expansion rate >=30ml/g are aqueous
Rate≤8%.
(3) for 1 wall thickness of micro-pipe sheath generally between 0.1-0.2mm, 1 material of micro-pipe sheath is LSZH material, and density is usual
In 1.4~1.5g/cm3, tensile strength is usually 12MPa, elongation at break 140%.
For 20 outer diameter of (4) 12 core micro-pipe usually in 1.4 ± 0.1mm, optical fiber equivalent circle diameter accounts for the 70- of microbeam bore
80%, the water blocking yarn accounts for the 10-15% of micro-pipe sheath lumen surface area.
(5) micro-pipe 20 is twisted using spiral S in 30 inner cavity of oversheath.
(6) 20 color of micro-pipe be blue, orange, green, brown, grey, white, red, black, yellow, purple, powder, viridescent, it is blue add 1 black ring,
Orange plus 1 black ring, green plus 1 black ring, brown add 1 black ring, grey to add 1 black ring, white plus 1 black
Ring, red plus 1 black ring, black add 1 white ring, yellow to add 1 black ring, purple that 1 black ring, pink colour is added to add 1
Black ring, dark green add 1 black ring.
(7) enhancement layer 50 is glass fibre yarn and water blocking yarn.
(8) waterstop 40 is two-sided waterstop, and waterstop is with a thickness of 0.2mm, width 34mm, expansion rate >=10mm/
Min, expansion height >=12mm, tensile strength >=40N/cm, elongation at break >=12%.
(9) 41 material of tear rope can be with polyester yarn, line density 444tex, tensile strength >=150N, and elongation at break >=
12%, softening point >=238 DEG C, fusing point >=265 DEG C.
(10) 2 FRP reinforcers 31 are embedded in oversheath 30 in parallel, reinforcer 31 is having a size of 1.8 ± 0.1mm.
(11) 30 material high-density polyethylene material of oversheath, the nominal 2.6mm of 30 wall thickness of oversheath.
Whole 100 outer diameters of (12) 288 core dry type microbeam optical cables are nominal 15.1mm, and density of optic fibre is in optical cable inner cavity
3.74F/mm2。
The present invention is to improve density of optic fibre in 100 inner cavity of optical cable to be based on above-mentioned basic cable configuration to increase message capacity
It is improved, thes improvement is that use and combine more 20 graftings of micro-pipe around band 80, then obtain twisted micro-pipe core 84.
Polyester yarn, aramid yarn or polyester belt or their combination should be can be around band 80.Thickness around band 80 is usually 0.1-
0.2mm, equivalent width are usually 0.1-2mm.Usual 8-12 root micro-pipe 20 around band 80 by combining in a branch of grafting micro-pipe
In 82, every beam grafting micro-pipe 82 after the differentiation of band 80, then is twisted together by different colours, is converged into together with water blocking yarn
Cable core (micro-pipe core 84).The present invention also by following 84 structure of density of optic fibre formula calculation optimization micro-pipe core, effectively improves optical fiber
The space accounting of density and optical fiber 2 in sheath lumen.
σ=N/ (π × R2) (1)
Wherein: σ is density of optic fibre, and N is number of fibers, and R is optical cable cavity radius.Density of optic fibre is usually in optical cable inner cavity
3.8-10F/mm2, optical cable inner fiber quantity is defined as divided by optical cable surface of internal cavity product.
R=(D+K)/2 (2)
Wherein: R is optical cable cavity radius, and D is cable core equivalent diameter, and K is correction factor, and the general value of K is 0.5-
1.0mm.Optical cable cavity radius is defined as optical cable core equivalent diameter and adds the half after correction factor.
D=(M1×N1+D1 2+N2×0.432)1/2 (3)
Wherein: M1For around cable-tie thickness, N1For around band quantity, N2It is that water blocking yarn bus is close for water blocking yarn equivalent amount
Metric lattice are divided by 1420Denier, D1Equivalent diameter is twisted for microbeam pipe in optical cable.
D1=1.16 × N3 1/2×D2 (4)
Wherein: N3For micro-pipe quantity, D2For micro-pipe outer diameter.
By above formula (1)~(4) it is found that density of optic fibre in optical cable inner cavity are as follows:
Wherein: density of optic fibre unit is F/mm2；N is number of fibers；K is correction factor, value 0.5-1.0mm；M1For around
Cable-tie thickness, unit mm, N1For around band quantity；N2For water blocking yarn equivalent amount；N3For dry fiber optic micro-pipe quantity, D2It is dry
Formula optical fiber micro-pipe outer diameter, unit mm.
Such as the traditional structure of Fig. 2, Fig. 3 and Fig. 4, density of optic fibre in optical cable inner cavity are as follows:
Wherein: density of optic fibre unit is F/mm2；N is number of fibers；N3For dry fiber optic micro-pipe quantity, D2For dry fiber optic
Micro-pipe outer diameter, unit mm.
Effectiveness of the present invention in the density of optic fibre for improving optical cable is exemplified below.
Fig. 5, Fig. 6 and Fig. 7 are please referred to, it only includes the combined micro-pipe of multiple grafting micro-pipes 82 which, which can be,
84, several water blocking yarns 3 and oversheath 30, several water blocking yarns 3 be filled in it is hollow between grafting micro-pipe 82 and grafting micro-pipe 82, around
Micro-pipe 82 is pricked by around the multiple micro-pipes 20 of 80 grafting of band and being filled in several water blocking yarns 3 in gap and constituting, the oversheath 30 is embedded
Enter several reinforcers 31.In other embodiments, which can also include similar above-mentioned waterstop 40, add
Strong one of layer 50 or tear rope 41 or various structures.
Embodiment 6
A kind of dry type microbeam optical cable, 432 core of fiber number, structure are substantially as shown in Figure 7.
(1) 12 optical fiber 2 in every micro-pipe 20,2 color of optical fiber be blue, orange, green, brown, grey, white, red, black, yellow, purple, powder,
Viridescent, optical fiber 2 is using G.657A2 optical fiber, and fibre coating diameter is 250 μm ± 10 μm after coloring, and optical fiber 2 uses in micro-pipe 20
SZ is twisted.
(2) include 1 600D water blocking yarn 3 in every micro-pipe 20,3 density of water blocking yarn in 15000m/kg, tensile strength >=
20N, elongation at break >=12%, percent thermal shrinkage≤3.5%, expansion rate >=30ml/g/min, expansion rate >=40ml/g are aqueous
Rate≤8%.
(3) for 1 wall thickness of micro-pipe sheath generally between 0.1-0.2mm, 1 material of micro-pipe sheath is LSZH material, and density is usual
In 1.4~1.5g/cm3, tensile strength is usually 12MPa, elongation at break 140%.
For 20 outer diameter of (4) 12 core micro-pipe usually in 1.5 ± 0.1mm, optical fiber equivalent circle diameter accounts for the 70- of micro-pipe sheath internal diameter
80%, 1.1~1.3mm of microtubule diameter, water blocking yarn equivalent diameter about 0.35mm in micro-pipe, account for about surface of internal cavity product 7%~
10%.
(5) micro-pipe 20 is twisted using spiral SZ in 30 inner cavity of oversheath.
(6) 20 color of micro-pipe be blue, orange, green, brown, grey, white, red, black, yellow, purple, powder, viridescent, it is blue add 1 black ring,
Orange plus 1 black ring, green plus 1 black ring, brown add 1 black ring, grey to add 1 black ring, white plus 1 black
Ring, red plus 1 black ring, black add 1 white ring, yellow to add 1 black ring, purple that 1 black ring, pink colour is added to add 1
Black ring, dark green add 1 black ring, blue plus 2 black rings, orange plus 2 black rings, green plus 2 black rings, browns
Add 2 black rings, grey add 2 black rings, white plus 2 black rings, red plus 2 black rings, black add 2 white rings,
Yellow adds 2 black rings, purple to add 2 black rings, pink colour that 2 black rings, dark green is added to add 2 black rings.
It (7) is polyester yarn around band 80.
(8) polyester yarn is 3 around 80 quantity of band with a thickness of 0.1mm.
(9) enhancement layer 50 is water blocking yarn, and water blocking yarn radical is 26 3000Denier.
(10) micro-pipe is twisted outer diameter D1=1.16 × 361/2× 1.5=10.44mm, cable core are twisted outer diameter D=(0.1 × 3+
10.442+26×3000/1420×0.432)1/2=10.93mm, inner cavity outer diameter are 11.83mm, and density of optic fibre is in inner cavity
3.93F/mm2, conventional cable inner cavity density of optic fibre as shown in Figure 4 is 3.28F/mm2, the design is so that density of optic fibre improves
19.8%.
(11) waterstop 40 is two-sided waterstop, and waterstop is with a thickness of 0.2mm, width 40mm, expansion rate >=10mm/
Min, expansion height >=12mm, tensile strength >=40N/cm, elongation at break >=12%.41 material of tear rope can with polyester yarn,
Line density is 444tex, tensile strength >=150N, elongation at break >=12%, softening point >=238 DEG C, fusing point >=265 DEG C
(12) 2 FRP reinforcers 31 are embedded in oversheath 30 in parallel, reinforcer is having a size of 1.8 ± 0.1mm.
(13) 30 material high-density polyethylene material of oversheath, the nominal 2.8mm of oversheath wall thickness.
100 entire outer diameter of (14) 432 core dry type microbeam optical cable is nominal 17.4mm.
Embodiment 7
A kind of dry type microbeam optical cable 100,720 core of fiber number.
(1) 12 optical fiber 2 in every micro-pipe 20, optical fiber color be blue, orange, green, brown, grey, white, red, black, yellow, purple, powder,
Viridescent, optical fiber is using G.657A2 optical fiber, and fibre coating diameter is 250 μm ± 10 μm after coloring, and optical fiber uses SZ in microbeam pipe
It twists.
It (2) include 1 600D water blocking yarn 3 in every micro-pipe, the yarn density that blocks water is in 15000m/kg, tensile strength >=20N,
Elongation at break >=12%, percent thermal shrinkage≤3.5%, expansion rate >=30ml/g/min, expansion rate >=40ml/g, moisture content≤
8%.
(3) for 1 wall thickness of micro-pipe sheath generally between 0.1-0.2mm, microbeam tube boot material is LSZH material, and density is usual
In 1.4~1.5g/cm3, tensile strength is usually 12MPa, elongation at break 140%.
For 20 outer diameter of (4) 12 core micro-pipe usually in 1.5 ± 0.1mm, optical fiber equivalent circle diameter accounts for the 70- of microbeam bore
80%, 1.1~1.3mm of microtubule diameter, water blocking yarn equivalent diameter about 0.35mm in micro-pipe, account for about the 7%~10% of inner cavity area.
(5) micro-pipe 20 is twisted using spiral SZ in 30 inner cavity of oversheath.
(6) 20 color of micro-pipe be blue, orange, green, brown, grey, white, red, black, yellow, purple, powder, viridescent, it is blue add 1 black ring,
Orange plus 1 black ring, green plus 1 black ring, brown add 1 black ring, grey to add 1 black ring, white plus 1 black
Ring, red plus 1 black ring, black add 1 white ring, yellow to add 1 black ring, purple that 1 black ring, pink colour is added to add 1
Black ring, dark green add 1 black ring, blue plus 2 black rings, orange plus 2 black rings, green plus 2 black rings, browns
Add 2 black rings, grey add 2 black rings, white plus 2 black rings, red plus 2 black rings, black add 2 white rings,
Yellow adds 2 black rings, purple to add 2 black rings, pink colour that 2 black rings, dark green is added to add 2 black rings.
It (7) is polyester yarn around band 80.
(8) polyester yarn is 5 around 80 quantity of band with a thickness of 0.1mm.
(9) enhancement layer 50 is water blocking yarn, and water blocking yarn radical is 42 3000Denier.
(10) micro-pipe is twisted outer diameter D1=1.16 × 601/2× 1.5=13.48mm, cable core are twisted outer diameter D=(0.1 × 5+
13.482+42×3000/1420×0.432)1/2=14.09mm, inner cavity outer diameter are 15.09mm, and density of optic fibre is in inner cavity
4.03F/mm2, conventional cable inner cavity density of optic fibre as shown in Figure 4 is 3.59F/mm2, density of optic fibre raising 12.2%.
(11) waterstop 40 is two-sided waterstop, and waterstop is with a thickness of 0.2mm, width 40mm, expansion rate >=10mm/
Min, expansion height >=12mm, tensile strength >=40N/cm, elongation at break >=12%.
(12) 2 FRP reinforcers 31 are embedded in oversheath 30 in parallel, reinforcer is having a size of 2.0 ± 0.1mm.
(13) 30 material high-density polyethylene material of oversheath, the nominal 3.0mm of sheath wall thickness.
100 entire outer diameter of (14) 720 core dry type microbeam optical cable is nominal 21.1mm.
Embodiment 8
A kind of dry type microbeam optical cable 100,720 core of fiber number.
(1) 12 optical fiber 2 in every micro-pipe 20, optical fiber color be blue, orange, green, brown, grey, white, red, black, yellow, purple, powder,
Viridescent, optical fiber is using G.657A2 optical fiber, and fibre coating diameter is 200 μm ± 10 μm after coloring, and optical fiber uses SZ in micro-pipe
It twists.
(2) include 1 300D water blocking yarn 3 in every micro-pipe 20, the yarn density that blocks water in 30000m/kg, tensile strength >=
20N, elongation at break >=12%, percent thermal shrinkage≤3.5%, expansion rate >=30ml/g/min, expansion rate >=40ml/g are aqueous
Rate≤8%.
(3) for 1 wall thickness of micro-pipe sheath generally between 0.1-0.2mm, microbeam tube boot material is LSZH material, and density is usual
In 1.4~1.5g/cm3, tensile strength is usually 12MPa, elongation at break 140%.
For 20 outer diameter of (4) 12 core micro-pipe usually in 1.3 ± 0.1mm, optical fiber equivalent circle diameter accounts for the 70- of micro-pipe sheath internal diameter
80%, 0.9~1.1mm of microtubule diameter, water blocking yarn equivalent diameter about 0.25mm in micro-pipe, account for about the 5%~8% of inner cavity area.
(5) micro-pipe 20 is twisted using spiral SZ in outer sheath lumen.
(6) 20 color of micro-pipe be blue, orange, green, brown, grey, white, red, black, yellow, purple, powder, viridescent, it is blue add 1 black ring,
Orange plus 1 black ring, green plus 1 black ring, brown add 1 black ring, grey to add 1 black ring, white plus 1 black
Ring, red plus 1 black ring, black add 1 white ring, yellow to add 1 black ring, purple that 1 black ring, pink colour is added to add 1
Black ring, dark green add 1 black ring, blue plus 2 black rings, orange plus 2 black rings, green plus 2 black rings, browns
Add 2 black rings, grey add 2 black rings, white plus 2 black rings, red plus 2 black rings, black add 2 white rings,
Yellow adds 2 black rings, purple to add 2 black rings, pink colour that 2 black rings, dark green is added to add 2 black rings.
It (7) is polyester belt around band 80.
(8) polyester yarn is 5 around band quantity with a thickness of 0.1mm.
(9) enhancement layer 50 is water blocking yarn, and water blocking yarn radical is 30 3000Denier.
(10) micro-pipe is twisted outer diameter D1=1.16 × 601/2× 1.3=11.68mm, cable core are twisted outer diameter D=(0.1 × 5+
11.682+30×3000/1420×0.432)1/2=12.19mm, inner cavity outer diameter are 12.69mm, and density of optic fibre is in inner cavity
5.69F/mm2, conventional cable inner cavity density of optic fibre as shown in Figure 4 is 4.56F/mm2, density of optic fibre raising 24.8%.
(11) waterstop 40 is two-sided waterstop, and waterstop is with a thickness of 0.2mm, width 40mm, expansion rate >=10mm/
Min, expansion height >=12mm, tensile strength >=40N/cm, elongation at break >=12%.
(12) 2 FRP reinforcers 31 are embedded in oversheath 30 in parallel, reinforcer is having a size of 1.8 ± 0.1mm.
(13) 30 material high-density polyethylene material of oversheath, the nominal 2.6mm of oversheath wall thickness.
100 entire outer diameter of (14) 720 core dry type microbeam optical cable is nominal 17.9mm.
Above-mentioned grafting dry type microbeam optical cable is filled without ointment, environment friendly and pollution-free, high without carrying out ointment cleaning when construction
Effect is quick；Dry type material water-proof material and optical fiber good compatibility, long-term co-existence do not influence optical fiber property；Dry type material water-proof material becomes with temperature
Change performance to stablize, optical fiber transmission property does not vary with temperature and changes；It is insufficient that dry type material water-proof material accounts for microtubule diameter surface area
20%, for a long time on microbeam tube boot performance without influence；After combining several microbeam pipe graftings around band, light can be effectively improved
The space accounting of fine density and optical fiber in sheath lumen.
Embodiment of above is only to illustrate the technical solution of the embodiment of the present invention rather than limits, although referring to above preferable
The embodiment of the present invention is described in detail in embodiment, those skilled in the art should understand that, it can be to this hair
The technical solution of bright embodiment is modified or equivalent replacement should not all be detached from the embodiment of the present invention technical solution spirit and
Range.
Claims (10)
1. a kind of dry type microbeam optical cable, in oversheath and insertion oversheath including micro-pipe core and the periphery for being coated on micro-pipe core
Several reinforcers, it is characterised in that: the micro-pipe core includes multiple grafting micro-pipes and several water blocking yarns, several water blocking yarns fillings
In gap between grafting micro-pipe and grafting micro-pipe；The grafting micro-pipe includes around band and by described around the more of band package
A dry fiber optic micro-pipe and several water blocking yarns, each dry fiber optic micro-pipe is by micro-pipe sheath and is wrapped in interior water blocking yarn and optical fiber
It forms, density of optic fibre in the optical cable inner cavity are as follows:
Wherein: density of optic fibre unit is F/mm2；N is number of fibers；K is correction factor, value 0.5-1.0mm；M1For around band
Thickness, N1For around band quantity；N2For water blocking yarn equivalent amount；N3For dry fiber optic micro-pipe quantity, D2Outside for dry fiber optic micro-pipe
Diameter.
2. dry type microbeam optical cable according to claim 1, it is characterised in that: density of optic fibre is in the optical cable inner cavity
3.8-10F/mm2。
3. dry type microbeam optical cable according to claim 1, it is characterised in that: several optical fiber in the dry fiber optic micro-pipe
Equivalent circle diameter the micro-pipe sheath lumen accounting less than 90% and be more than or equal to 70%, the water blocking yarn account for micro-pipe shield
Cover surface of internal cavity product 20% and within.
4. dry type microbeam optical cable according to claim 3, it is characterised in that: several optical fiber in the dry fiber optic micro-pipe
Equivalent circle diameter the micro-pipe sheath lumen accounting between 70%-80%.
5. dry type microbeam optical cable according to claim 1, it is characterised in that: the material of the micro-pipe sheath includes alkene
Polymer and inorganic filler, inorganic filler account for the 0.1%~20% of micro-pipe sheath all components gross mass；The olefin polymer
Including the first olefin polymer or ethylene/propene and other monomers copolymer, wherein the first olefin polymer includes linear low close
Spend one of polyethylene, poly- 4-methyl-1-pentene or ethylene propylene copolymer；Wherein ethylene/propene and other monomers are copolymerized
Object includes ethylene -ol acid ethylene copolymer, ethylene-methyl acrylate copolymer, it is a kind of in ethylene-butyl acrylate copolymer or
A variety of mixtures；The inorganic filler includes hydroxide, hydrous oxide, metal salt or their mixture or charcoal
Black, silica, kaolin, clay or their mixture；The micro-pipe sheath with a thickness of 0.1-0.2mm.
6. dry type microbeam optical cable according to claim 1, it is characterised in that: between the micro-pipe core and the oversheath
It further include the enhancement layer of coaxial arrangement, the material of the enhancement layer includes any one of aramid fiber, glass fibre yarn or polyester yarn, or
It is combination one or more in water blocking yarn and aramid fiber, glass fibre yarn or polyester yarn.
7. dry type microbeam optical cable according to claim 1, it is characterised in that: between the micro-pipe core and the oversheath
It further include the waterstop of coaxial arrangement, the waterstop is two-sided waterstop.
8. dry type microbeam optical cable according to claim 7, it is characterised in that: if in the waterstop further including insertion
Dry tear rope, the material of the tear rope are aramid fiber or polyester yarn.
9. dry type microbeam optical cable according to claim 1, it is characterised in that: the material of the oversheath is polyolefin material
Material；The reinforcer is density in 2.05~2.15g/cm3Fiberglass-reinforced plastic lever.
10. dry type microbeam optical cable according to claim 1, it is characterised in that: be set to each structure sheaf of micro-pipe in-core
Water blocking yarn includes water-absorption fiber, can be fallen in micro-pipe core production process without water-proofing powder, the water-absorption fiber contain acrylic acid,
Polyacrylic acid, acrylates or their modified material or their mixture.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910818373.2A CN110426803B (en) | 2019-08-30 | All-dry type microbeam optical cable | |
| PCT/CN2019/126738 WO2021036111A1 (en) | 2019-08-30 | 2019-12-19 | Fully-dry micro-bundle fiber optic cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910818373.2A CN110426803B (en) | 2019-08-30 | All-dry type microbeam optical cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110426803A true CN110426803A (en) | 2019-11-08 |
| CN110426803B CN110426803B (en) | 2024-04-30 |
Family
ID=
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| CN111562657A (en) * | 2020-05-22 | 2020-08-21 | 江苏中天科技股份有限公司 | Armored micro-beam optical cable and manufacturing method thereof |
| WO2021036110A1 (en) * | 2019-08-30 | 2021-03-04 | 江苏中天科技股份有限公司 | Easy-to-peel dry optical fiber microtube and full-dry microbeam optical cable |
| WO2021036111A1 (en) * | 2019-08-30 | 2021-03-04 | 江苏中天科技股份有限公司 | Fully-dry micro-bundle fiber optic cable |
| CN113866922A (en) * | 2021-10-13 | 2021-12-31 | 江苏亨通光电股份有限公司 | Outdoor optical cable with large-core-number micro-beam tube and process manufacturing method thereof |
| CN114415308A (en) * | 2022-03-30 | 2022-04-29 | 长飞光纤光缆股份有限公司 | Full-dry multi-core optical unit and optical cable |
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| WO2021036111A1 (en) | 2021-03-04 |
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