CN110794543A - High-strength access optical cable and preparation method thereof - Google Patents
High-strength access optical cable and preparation method thereof Download PDFInfo
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- CN110794543A CN110794543A CN201911190330.0A CN201911190330A CN110794543A CN 110794543 A CN110794543 A CN 110794543A CN 201911190330 A CN201911190330 A CN 201911190330A CN 110794543 A CN110794543 A CN 110794543A
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- Prior art keywords
- glass fiber
- loose tube
- optical
- tube
- outer sheath
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- 230000003287 optical effect Effects 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000003365 glass fiber Substances 0.000 claims abstract description 42
- 239000013307 optical fiber Substances 0.000 claims abstract description 41
- 239000003292 glue Substances 0.000 claims description 13
- 238000009413 insulation Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 3
- 229920002554 vinyl polymer Polymers 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 2
- 239000004593 Epoxy Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 10
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 10
- 230000003014 reinforcing effect Effects 0.000 description 5
- 238000004513 sizing Methods 0.000 description 4
- 239000004760 aramid Substances 0.000 description 3
- 229920003235 aromatic polyamide Polymers 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
- G02B6/4436—Heat resistant
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- 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 provides a high-strength access optical cable which comprises an optical fiber, a loose tube, a glass fiber tube and an outer sheath, wherein the loose tube is wrapped outside the optical fiber, the glass fiber tube is wrapped outside the loose tube, and the outer sheath is wrapped outside the glass fiber tube. The invention also provides a preparation method of the high-strength access optical cable. The invention has the beneficial effects that: the outer diameter is small, the consumed materials are less, and the cost is low; the construction cost is low; the lateral pressure resistance is good; the environmental resistance is good; has long optical fiber length and good tensile property.
Description
Technical Field
The invention relates to an optical cable, in particular to a high-strength access optical cable and a preparation method thereof.
Background
The existing optical cable structure (non-backbone/trunk network) mainly comprises two types of loose-sleeve layer stranded structures and loose-sleeve central tube structures. The number of optical fiber cores is relatively large. If the number of the cores of the optical cable is to be small, some elements in the core of the optical cable are not necessary, such as the central strength member, the filler cord, the armor layer (if any), the sheath and the optical fiber loose tube of the loose tube type optical cable, the optical fiber loose tube of the loose tube type central tube type structure, the double strength member, the sheath, and the like. Especially, the optical cable structure is naturally enlarged much because the optical fiber loose tube is thick.
For the FTTx structure, several types of optical cables or cables are generally used, such as tight-buffered optical cables or cables, and the main structure thereof has three types: one is that the tight-buffered optical fiber is embedded into the reinforcement such as aramid yarn, and the reinforcement is coated with a layer of outer sheath; one is that the tight-buffered optical fiber is twisted and wound on a KFRP or FPR and other central reinforcing members and is arranged in an aramid yarn reinforcing layer, and a layer of outer sheath is coated outside the aramid yarn reinforcing layer; one is that the optical fiber is arranged in the center of the butterfly structure, the two sides of the butterfly structure are central reinforcing parts, and the optical fiber and the central reinforcing parts are both coated by an outer sheath. The three tight-sleeved optical cables have no extra cable length, the optical cables expand with heat and contract with cold when being subjected to external environment changes, and the contraction or stretching force generated by other materials is directly transmitted to the internal optical fibers, so that the transmission performance and the service life of the optical fibers are influenced.
The existing loose tube structure optical cable has the following defects: the outer diameter is large, the consumed materials are more, and the cost is high; the lateral pressure resistance is not good.
The existing tight-sleeved optical cable has the following defects: poor environmental resistance; the lateral pressure resistance is poor; no extra length of optical fiber and poor tensile property.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a high-strength access optical cable and a preparation method thereof.
The invention provides a high-strength access optical cable which comprises an optical fiber, a loose tube, a glass fiber tube and an outer sheath, wherein the loose tube is wrapped outside the optical fiber, the glass fiber tube is wrapped outside the loose tube, and the outer sheath is wrapped outside the glass fiber tube.
As a further improvement of the invention, a heat insulation layer is arranged between the loose sleeve and the glass fiber sleeve.
As a further improvement of the invention, the loose tube is an oil-filled loose tube, and the oil-filled loose tube and the optical fiber arranged in the oil-filled loose tube form a loose tube structure.
As a further improvement of the invention, the outer sheath is a PE outer sheath or a PVC outer sheath or a PU outer sheath.
The invention also provides a preparation method of the high-strength access optical cable, the optical fiber is wrapped in the loose tube to form an optical unit, the optical unit is conveyed forwards through the conveying roller, the glass fiber band enters the glue groove through the conveying roller and is immersed in the liquid in the glue groove, the liquid is liquid vinyl resin mixed with epoxy resin, the glass fiber band is conveyed out of the glue groove through the rolling roller, the glass fiber band and the optical unit are combined in the sizing die, the glass fiber band is directly adhered to the outer layer of the optical unit through the sizing die to form a glass fiber sleeve, and the outer sheath is wrapped outside the glass fiber sleeve.
As a further improvement of the invention, the optical fiber is wrapped in a loose tube, and a layer of thermal insulation is wrapped outside the loose tube to form the light unit.
As a further development of the invention, the light unit does not enter the glue bath.
The invention has the beneficial effects that: the outer diameter is small, the consumed materials are less, and the cost is low; the environmental resistance is good; has long optical fiber length and good tensile property.
Drawings
Fig. 1 is a schematic view of a high strength access cable of the present invention.
Fig. 2 is a schematic diagram of a method of making a high strength access cable according to the present invention.
Detailed Description
The invention is further described with reference to the following description and embodiments in conjunction with the accompanying drawings.
As shown in fig. 1, a high-strength access optical cable includes an optical fiber 1, a loose tube 2, a glass fiber tube 4 and an outer sheath 5, wherein the loose tube 2 is wrapped outside the optical fiber 1, the glass fiber tube 4 is wrapped outside the loose tube 2, and the outer sheath 5 is wrapped outside the glass fiber tube 4.
As shown in fig. 1, a heat insulation layer 3 is arranged between the loose tube 2 and the glass fiber tube 4, the heat insulation layer 3 is used for protecting the loose tube 2, and the heat insulation layer 3 can prevent the loose tube 2 from softening and deforming because high temperature is generated when the glass fiber tube 4 is formed by baking.
As shown in fig. 1, the loose tube 2 is an oil-filled loose tube, and the oil-filled loose tube and the optical fiber 1 disposed therein form a loose tube structure.
As shown in fig. 2, in the preparation method of a high-strength access optical cable, an optical fiber 1 is placed in a loose tube 2, and then a layer of thermal insulation layer 3 is coated outside the oil-filled loose tube to form an optical unit 20, the optical unit 20 is conveyed forward by a conveying roller, passes through the glue groove 30 without entering the glue groove 30, a glass fiber ribbon 10 enters the glue groove 30 by the conveying roller, is immersed in a liquid 60 in the glue groove 30, the liquid 60 is a liquid vinyl mixed with epoxy resin, the glass fiber ribbon 10 is conveyed out of the glue groove 30 by a rolling roller 40, so that the glass fiber ribbon 10 and the optical unit 20 are converged in a sizing die 50, at this time, the optical unit 20 is located in the center of the glass fiber ribbon 10, the glass fiber ribbon 10 is directly adhered to the outer layer of the optical unit 20 by the sizing die 50 to form a glass fiber sleeve 4, which forms a similar FRP sleeve structure, the glass fiber sleeve 4 is coated with other materials such as PE, PVC, PU and the like to form an outer sheath 5 of the optical cable.
According to the high-strength access optical cable and the preparation method thereof, the oil-filled loose tube (such as a PBT tube) mainly forms a loose tube structure with the optical fiber 1 arranged in the oil-filled loose tube, the optical fiber 1 has extra length, and when the optical cable is bent, the optical fiber 1 arranged in the optical cable is not subjected to other extrusion forces except for small bending stress. The expansion and contraction performance of the glass fiber is very close to that of the optical fiber, so that the structure has very good environment resistance. The heat insulation layer 3 wrapped outside the loose tube 2 is mainly used for preventing the loose tube 2 from softening and deforming, and further influencing the clearance of the optical fiber 1 in the optical fiber loose tube, so that the mechanical performance and the environmental resistance of the optical fiber are influenced.
The glass fiber material has the characteristics of light weight, high tensile strength and good insulating property, and the glass fiber sleeve 4 manufactured by the glass fiber material can be used as the main tension and side pressure resistant structure protection function of the optical cable, and has the advantages of water resistance, moisture resistance, stable structure and lower cost. The glass fiber is also a good corrosion-resistant material and has the rat bite-proof characteristic, and the comprehensive performance of the optical cable can be further enhanced due to the double functions of the glass fiber sleeve 4 and the PE outer sheath.
The high-strength access optical cable and the preparation method thereof provided by the invention have the following advantages:
1. the light weight, high strength, good resistance to environmental performance influences such as high and low temperature changes and the like;
2. the paint has good waterproof, moistureproof, ratproof and anticorrosion performances, and has better resistance to atmosphere, water, low-concentration acid, alkali, salt, various oils and solvents;
3. the optical fiber connector has good lateral pressure resistance and tensile resistance, has low requirements on optical access and wiring construction, and can use various connecting hardware fittings used conventionally;
4. the production process is simple and the cost is low.
According to the high-strength access optical cable and the preparation method thereof, materials such as the optical fiber 1, the oil-filled loose tube, the heat insulation layer 3 and the glass fiber are used, and the optical cable is designed, and has the characteristics of light weight, high bending resistance, high lateral pressure resistance, high tensile resistance and the like, and is simple in manufacturing process, low in material consumption and low in cost. And the optical cable can be made into a single-core or even a multi-core optical cable according to actual conditions so as to meet the increasingly developed network construction requirements. The optical cable can be used for non-backbone networks, FTTx, sparsely populated areas, or lines with less optical fiber quantity requirements, and can also be used for indoor optical fiber access and wiring, communication equipment in buildings, interconnection between switches and end users' equipment, and the like.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (7)
1. A high strength access optical cable, characterized in that: the optical fiber cable comprises an optical fiber, a loose tube, a glass fiber tube and an outer sheath, wherein the loose tube is wrapped outside the optical fiber, the glass fiber tube is wrapped outside the loose tube, and the outer sheath is wrapped outside the glass fiber tube.
2. The high strength access cable of claim 1, wherein: and a heat insulation layer is arranged between the loose sleeve and the glass fiber sleeve.
3. The high strength access cable of claim 1, wherein: the loose tube is an oil-filled loose tube, and the oil-filled loose tube and the optical fiber arranged in the oil-filled loose tube form a loose tube structure.
4. The high strength access cable of claim 1, wherein: the outer sheath is a PE outer sheath or a PVC outer sheath or a PU outer sheath.
5. A preparation method of a high-strength access optical cable is characterized by comprising the following steps: optical fiber is wrapped up in the loose intraductal, forms the light unit, and the light unit conveys forward through the transfer roller, and the glass fiber band-pass gets into the glue groove through the transfer roller, soaks glue the liquid in the groove, this liquid is liquid vinyl resin and mixes epoxy, will through the roll roller the glass fiber band conveying is gone out glue the groove, makes the glass fiber band with the light unit converges in the stock mould, through the stock mould will the glass fiber band directly bonds in the skin of light unit forms the glass fiber sleeve pipe, at the outer oversheath that coats of glass fiber sleeve pipe.
6. The method of claim 5, wherein the method comprises the steps of: the optical fiber is wrapped in the loose tube, and a layer of heat insulation layer is wrapped outside the loose tube to form the optical unit.
7. The method of making a high strength optical access cable of claim 5, wherein: the light unit does not enter the glue tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911190330.0A CN110794543A (en) | 2019-11-28 | 2019-11-28 | High-strength access optical cable and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911190330.0A CN110794543A (en) | 2019-11-28 | 2019-11-28 | High-strength access optical cable and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110794543A true CN110794543A (en) | 2020-02-14 |
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ID=69446608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911190330.0A Pending CN110794543A (en) | 2019-11-28 | 2019-11-28 | High-strength access optical cable and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110794543A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2704054Y (en) * | 2004-04-20 | 2005-06-08 | 谢圣明 | Central beam tubular indoor optical fiber cable |
| CN2704055Y (en) * | 2004-04-20 | 2005-06-08 | 谢圣明 | Central beam tubular nonmetallic optical fiber cable |
| CN202956514U (en) * | 2012-11-28 | 2013-05-29 | 浙江南方通信集团股份有限公司 | Cable with improved structure |
| CN203766038U (en) * | 2014-03-28 | 2014-08-13 | 富阳科威钢业有限公司 | Fiber conveying device used for producing glass fiber reinforced epoxy resin winding tube |
| CN204389751U (en) * | 2014-12-30 | 2015-06-10 | 江苏通能信息有限公司 | The micro-cable of a kind of fire-resistant intelligence |
| CN207457562U (en) * | 2017-04-18 | 2018-06-05 | 安徽中电光达通信技术有限公司 | A kind of optical fiber composite overhead ground wire of resistance to ultralow temperature |
| CN210835374U (en) * | 2019-11-28 | 2020-06-23 | 深圳市特发信息光电技术有限公司 | High-strength access optical cable |
-
2019
- 2019-11-28 CN CN201911190330.0A patent/CN110794543A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2704054Y (en) * | 2004-04-20 | 2005-06-08 | 谢圣明 | Central beam tubular indoor optical fiber cable |
| CN2704055Y (en) * | 2004-04-20 | 2005-06-08 | 谢圣明 | Central beam tubular nonmetallic optical fiber cable |
| CN202956514U (en) * | 2012-11-28 | 2013-05-29 | 浙江南方通信集团股份有限公司 | Cable with improved structure |
| CN203766038U (en) * | 2014-03-28 | 2014-08-13 | 富阳科威钢业有限公司 | Fiber conveying device used for producing glass fiber reinforced epoxy resin winding tube |
| CN204389751U (en) * | 2014-12-30 | 2015-06-10 | 江苏通能信息有限公司 | The micro-cable of a kind of fire-resistant intelligence |
| CN207457562U (en) * | 2017-04-18 | 2018-06-05 | 安徽中电光达通信技术有限公司 | A kind of optical fiber composite overhead ground wire of resistance to ultralow temperature |
| CN210835374U (en) * | 2019-11-28 | 2020-06-23 | 深圳市特发信息光电技术有限公司 | High-strength access optical cable |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200214 |