CN103616749A - Single-core optical cable for indoor and outdoor jumper wires and preparing method thereof - Google Patents
Single-core optical cable for indoor and outdoor jumper wires and preparing method thereof Download PDFInfo
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Abstract
The invention relates to a single-core optical cable for indoor and outdoor jumper wires and a preparing method of the single-core optical cable for the indoor and outdoor jumper wires. The single-core optical cable comprises an optical fiber, a tightly-wrapping layer, a second water-resistant reinforcing layer, an inner protection layer, a first water-resistant reinforcing layer and an outer protection layer. The method for preparing the single-core optical cable comprises the steps that a curved insensitive optical fiber material is selected and manufactured into the optical fiber; the outer surface of the optical fiber is wrapped in the tightly-wrapping layer through a plastic extruding machine; the outer surface of the tightly-wrapping layer is wrapped by the second water-resistant reinforcing layer; the outer surface of the second water-resistant reinforcing layer is wrapped in the inner protection layer through the plastic extruding machine; the outer surface of the inner protection layer is wrapped by the first water-resistant reinforcing layer; the outer surface of the first water-resistant reinforcing layer is wrapped in the outer protection layer through the plastic extruding machine, and therefore the single-core optical cable for the indoor and outdoor jumper wires is obtained. The single-core optical cable for the indoor and outdoor jumper wires is greatly improved in structure and can be generally used in cooperation with regular jumper wire parts so that the good generality of the single-core optical cable can be achieved, the using requirements for the long distance, an outdoor low-temperature environment and repeatedly dragging can be satisfied, a fire source and water vapor can be effectively blocked and the damage caused by rodents can be prevented.
Description
Technical field
The present invention relates to a kind of single fiber cable and preparation method thereof, relate in particular to single fiber cable and preparation method thereof for the wire jumper of a kind of indoor and outdoor.
Background technology
Along with the development of optical communication technology, light occurring in the middle of more field as the medium of transmitting signal, and emphasis is on optical fiber Metropolitan Area Network (MAN) and Optical Access Network.Carrying forward vigorously FTTx(optical fiber access) under the condition of building, driven on the one hand the sustainable growth of China's optical fiber cable demand, also optical fiber cable performance is had higher requirement on the other hand." last rice " in FTTx is generally all realized by wire jumper.Many times, especially at industrial circle, the environment more complicated of cable for optical fiber jumper, requires that length is longer, bending resistance pull resistance, anti-flammability, water proofing property is better and protection optical cable is not subject to the infringement of other external environment.
About cable for optical fiber jumper; in prior art, have been reported; as Chinese invention patent application file (publication number: CN101144878A) relate to a kind of indoor/outdoor non-metal optical cable for optical fiber jumper; this optical cable comprises 2-4 subelement; each subelement is single core cable or filler cells; single core cable wrap is drawn together single fiber cable, tight sleeve layer, reinforcement and subelement sheath, and filler cells comprises reinforcement and subelement sheath, and subelement is protected in the centre of outer jacket.This optical cable comprises 2-4 subelement, and cost is higher, and the bending resistance tensile strength that this optical cable reaches can not meet long distance, outdoor low temperature environment, dilatory use repeatedly, and other performances such as its water proofing property, anti-flammability are not very desirable yet.
Summary of the invention
The present invention is directed to the above-mentioned problems in the prior art, a kind of satisfied long distance, outdoor low temperature environment are provided, can repeatedly draw, reusable indoor and outdoor wire jumper single fiber cable.
Object of the present invention can realize by following technical proposal: a kind of indoor and outdoor wire jumper single fiber cable, described single fiber cable include optical fiber, optical fiber outside surface be coated with hard-pressed bale layer, hard-pressed bale layer outside surface be coated with second block water enhancement Layer, second block water enhancement Layer outside surface be coated with sheath, sheath outside surface be coated with first block water enhancement Layer, at the first enhancement Layer outside surface that blocks water, be coated with outer jacket.
Indoor and outdoor of the present invention wire jumper comprises first enhancement Layer and the second two-layer enhancement Layer that blocks water of enhancement Layer that blocks water that blocks water with single fiber cable; not only can more fully effectively absorb moisture; cut off the destruction of steam to optical fiber, can also enough cross directional stretch power is provided and longitudinally flatten protective effect for whole optical cable.And, indoor and outdoor of the present invention wire jumper blocks water on enhancement Layer and is coated with respectively outer jacket and sheath at first enhancement Layer and second that blocks water with single fiber cable, single fiber cable is used inside and outside pair of shielding layer structure, has met the long distance in some field, circumstance complication, dilatory, reusable requirement repeatedly.
As preferably, described optical fiber external diameter is Φ 245 μ m; The thickness of described hard-pressed bale layer is 0.25-0.35mm; The thickness of the second described water blocking layer is 0.1-0.2mm; The thickness of described sheath is 0.35-0.55mm; The thickness of the first described water blocking layer is 0.1-0.3mm; The thickness of described outer jacket is 1.1-1.3mm.Wherein, described optical fiber detector for outer diameter error is ± 7 μ m.
As preferably, the material of described optical fiber is bend insensitive fiber material.Bend insensitive fiber excellent performance, is adapted to 1310-1625nm all band transmission system, and very little in the crooked annex decay of long wavelength's section.The at present domestic generally bending radius of the G.652 standard fiber of application is 25mm, the restriction of radius by bending, and optical fiber can not optionally carry out angle and curved installation.Compare with standard fiber G.652, G.657 bend insensitive fiber has a good bending resistance, and bending loss is smaller.Therefore, the present invention preferentially selects G.657 bend insensitive fiber.
As preferably, the material of described hard-pressed bale layer is a kind of in PVC, LSZH, Nylon material.PH weighted value >=4.3 of described material, conductivity weighted value≤10 μ s/mm, minimum transmittance >=75%, meets the standard of low smoke and zero halogen material.Hard-pressed bale layer adopts low smoke and zero halogen material to make, and not only can play certain buffer action, and guarantee optical cable fire resistance in use.
As preferably, the described second material that blocks water enhancement Layer is water resistance aramid fiber wire material.Water resistance aramid fiber silk, as the block water material of enhancement Layer of second of single fiber cable of the present invention, can effectively be protected optical fiber.In addition, water resistance aramid fiber silk also has very high tensile strength and elastic modulus, is a kind of good tension member.Water resistance aramid fiber silk of the present invention or the support original paper of sheath, for sheath provides enough anchorage forces, its good flexibility plays good buffer action to optical fiber equally.
As preferably, the material of described sheath is a kind of in PVC, LSZH, TPU, PPO material.PH weighted value >=4.3 of described material, conductivity weighted value≤10 μ s/mm, minimum transmittance >=75%, meets the standard of low smoke and zero halogen material.Sheath of the present invention adopts low smoke and zero halogen material to make, and not only can play certain buffer action, and guarantee optical cable fire resistance in use.
As preferably, the described first material that blocks water enhancement Layer is the organdy material that blocks water.Block water organdy as the block water material of enhancement Layer of first of single fiber cable of the present invention, can effectively absorb moisture, cut off the damage of steam to optical fiber.In addition, the organdy that blocks water, as the support original paper of outer jacket, can not only can also play longitudinal flattening protective effect for whole optical cable provides enough cross directional stretch power.Meanwhile, the organdy that blocks water can also stop the destruction of rodent to outer jacket.
As preferably, the material of described outer jacket is PE or PVC material; The oxygen index of described PE material, PVC material is not less than 32.PE material odorless, nontoxic, there is good resistance to low temperature, chemical stability is good, the erosion of the most of soda acids of ability.PVC material has softness, the random advantage such as bending fold.Single fiber cable outer jacket of the present invention is made by PE or PVC material, and single fiber cable has been played to effective protective effect.In addition, PE material is different with the fire resistance of PVC material, and oxygen index, at the inflammable material that belongs to below 22, does not have anti-flammability; Between 22-27, be nonflammable material, have self-extinguishing; More than 27 be high nonflammable material.And the present invention adopts oxygen index to be not less than 32 PE material and PVC material, in the situation that running into the condition of a fire, can effectively block burning things which may cause a fire disaster, protection optical cable, makes the outer jacket flame retardant effect making reach best.
Another object of the present invention is to provide the preparation method of above-mentioned indoor and outdoor wire jumper with single fiber cable, described preparation method is as follows: first, choose the optical fiber that bend insensitive fiber material is made, then by extruding machine, at optical fiber outside surface, be coated hard-pressed bale layer, at hard-pressed bale layer outside surface wrapped second enhancement Layer that blocks water, by extruding machine at the second coated sheath of enhancement Layer outside surface that blocks water, at sheath outside surface wrapped first enhancement Layer that blocks water, finally by extruding machine at the first coated outer jacket of enhancement Layer outside surface that blocks water, make final products indoor and outdoor wire jumper single fiber cable.
The present invention has the following advantages:
1. the concrete two-layer enhancement Layer that blocks water of single fiber cable for the wire jumper of indoor and outdoor of the present invention, can effectively absorb moisture, cuts off the damage of steam to optical fiber.
2. indoor and outdoor of the present invention wire jumper has two-layer sheath with single fiber cable, can meet long distance, outdoor low temperature environment, the dilatory requirement of using repeatedly.
3. for the wire jumper of indoor and outdoor of the present invention, single fiber cable hard-pressed bale layer, sheath and outer jacket are made by fire proofing, in the situation that running into the condition of a fire, can effectively block burning things which may cause a fire disaster, protection optical cable.
4. indoor and outdoor of the present invention wire jumper adopts bend insensitive fiber material to make with single fiber cable optical fiber, makes optical cable have good bending property.
5. indoor and outdoor of the present invention wire jumper can effectively prevent rodentine destruction with single fiber cable.
Although 6. structurally there is larger improvement, but still general with conventional wire jumper loose mail, embodied its good versatility.
Accompanying drawing explanation
Fig. 1 is the sectional view of single fiber cable for the wire jumper of indoor and outdoor of the present invention.
As shown in the figure: 1, optical fiber; 2, hard-pressed bale layer; 3, second enhancement Layer that blocks water; 4, sheath; 5, first enhancement Layer that blocks water; 6, outer jacket.
Embodiment
Be below specific embodiments of the invention, and by reference to the accompanying drawings technical scheme of the present invention be further described, but the present invention is not limited to these embodiment.
Please refer to Fig. 1, Fig. 1 is the sectional view of single fiber cable for the wire jumper of indoor and outdoor of the present invention.In Fig. 1, indoor and outdoor of the present invention wire jumper includes optical fiber 1 with single fiber cable, optical fiber 1 outside surface is coated with hard-pressed bale layer 2, hard-pressed bale layer 2 outside surface are coated with second enhancement Layer 3 that blocks water, second enhancement Layer 3 outside surfaces that block water are coated with sheath 4, sheath 4 outside surfaces are coated with first enhancement Layer 5, the first enhancement Layer 5 outside surfaces that block water that block water and are coated with outer jacket 6.
Embodiment 1:
First, choose G.657 bend insensitive fiber, then by extruding machine, in the coated PH weighted value of optical fiber outside surface, be 4.8, conductivity weighted value is 9.2 μ s/mm, the hard-pressed bale layer that the thickness that the LSZH material that minimum transmittance is 75% is made is 0.3mm, the thickness of making at the wrapped water resistance aramid fiber silk of hard-pressed bale layer outside surface is 0.1mm second enhancement Layer that blocks water, by extruding machine, in the second coated PH weighted value of enhancement Layer outside surface that blocks water, be 4.8, conductivity weighted value is 9.2 μ s/mm, the sheath that the thickness that the LSZH material that minimum transmittance is 75% is made is 0.45mm, the thickness of making at the wrapped organdy that blocks water of sheath outside surface is 0.15mm first enhancement Layer that blocks water, finally by extruding machine at first outer jacket that thickness that PE material that the coated oxygen index of enhancement Layer outside surface is 33 makes is 1.2mm that blocks water, make final products indoor and outdoor wire jumper single fiber cable.
Embodiment 2:
First, choose G.657 bend insensitive fiber, then by extruding machine, in the coated PH weighted value of optical fiber outside surface, be 5.0, conductivity weighted value is 8.5 μ s/mm, the hard-pressed bale layer that the thickness that the PVC material that minimum transmittance is 78% is made is 0.25, the thickness of making at the wrapped water resistance aramid fiber silk of hard-pressed bale layer outside surface is 0.15mm second enhancement Layer that blocks water, by extruding machine, in the second coated PH weighted value of enhancement Layer outside surface that blocks water, be 5.2, conductivity weighted value is 8.8 μ s/mm, the sheath that the thickness that the TPU material that minimum transmittance is 80% is made is 0.35mm, the thickness of making at the wrapped organdy that blocks water of sheath outside surface is 0.2mm first enhancement Layer that blocks water, finally by extruding machine at first outer jacket that thickness that PE material that the coated oxygen index of enhancement Layer outside surface is 34 makes is 1.1mm that blocks water, make final products indoor and outdoor wire jumper single fiber cable.
Embodiment 3:
First, choose G.657 bend insensitive fiber, then by extruding machine, in the coated PH weighted value of optical fiber outside surface, be 5.0, conductivity weighted value is 9.0 μ s/mm, the hard-pressed bale layer that the thickness that the Nylon material that minimum transmittance is 79% is made is 0.35mm, the thickness of making at the wrapped water resistance aramid fiber silk of hard-pressed bale layer outside surface is 0.2mm second enhancement Layer that blocks water, by extruding machine, in the second coated PH weighted value of enhancement Layer outside surface that blocks water, be 5.3, conductivity weighted value is 8.5 μ s/mm, the PPO material that minimum transmittance is 82% is made the sheath that thickness is 0.55mm, the thickness of making at the wrapped organdy that blocks water of sheath outside surface is 0.2mm first enhancement Layer that blocks water, finally by extruding machine at first outer jacket that thickness that PVC material that the coated oxygen index of enhancement Layer outside surface is 33 makes is 1.3mm that blocks water, make final products indoor and outdoor wire jumper single fiber cable.
Embodiment 4:
First, choose G.657 bend insensitive fiber, then by extruding machine, in the coated PH weighted value of optical fiber outside surface, be 4.8, conductivity weighted value is 8.5 μ s/mm, the hard-pressed bale layer that the thickness that the Nylon material that minimum transmittance is 85% is made is 0.3mm, the thickness of making at the wrapped water resistance aramid fiber silk of hard-pressed bale layer outside surface is 0.2mm second enhancement Layer that blocks water, by extruding machine, in the second coated PH weighted value of enhancement Layer outside surface that blocks water, be 4.8, conductivity weighted value is 8.5 μ s/mm, the PVC material that minimum transmittance is 78% is made the sheath that thickness is 0.45mm, the thickness of making at the wrapped organdy that blocks water of sheath outside surface is 0.3mm first enhancement Layer that blocks water, finally by sheath machine at first outer jacket that thickness that PVC material that the coated oxygen index of enhancement Layer outside surface is 34 makes is 1.2mm that blocks water, make final products indoor and outdoor wire jumper single fiber cable.
The indoor and outdoor wire jumper that embodiment of the present invention 1-4 is made carries out performance test with single fiber cable, and test result is as shown in table 1.
The indoor and outdoor wire jumper single fiber cable that table 1 embodiment of the present invention 1-4 makes
The performance test results
As can be drawn from Table 1, the indoor and outdoor wire jumper that the present invention makes is functional with single fiber cable, can meet the long distance of optical cable, outdoor low temperature environment, the dilatory requirement of using repeatedly.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although the present invention has been made a detailed description and has quoted as proof some specific embodiments, to those skilled in the art, only otherwise it is obvious leaving that the spirit and scope of the present invention can make various changes or revise.
Claims (9)
1. an indoor and outdoor wire jumper single fiber cable, it is characterized in that, described single fiber cable include optical fiber, optical fiber outside surface be coated with hard-pressed bale layer, hard-pressed bale layer outside surface be coated with second block water enhancement Layer, second block water enhancement Layer outside surface be coated with sheath, sheath outside surface be coated with first block water enhancement Layer, at the first enhancement Layer outside surface that blocks water, be coated with outer jacket.
2. indoor and outdoor according to claim 1 wire jumper single fiber cable, is characterized in that, described optical fiber external diameter is Φ 245 μ m; The thickness of described hard-pressed bale layer is 0.25-0.35mm; The thickness of the second described water blocking layer is 0.1-0.2mm; The thickness of described sheath is 0.35-0.55mm; The thickness of the first described water blocking layer is 0.1-0.3mm; The thickness of described outer jacket is 1.1-1.3mm.
3. indoor and outdoor according to claim 1 and 2 wire jumper single fiber cable, is characterized in that, the material of described optical fiber is bend insensitive fiber material.
4. indoor and outdoor according to claim 1 and 2 wire jumper single fiber cable, is characterized in that, the material of described hard-pressed bale layer is a kind of in PVC, LSZH, Nylon material.
5. indoor and outdoor according to claim 1 and 2 wire jumper single fiber cable, is characterized in that, the described second material that blocks water enhancement Layer is water resistance aramid fiber wire material.
6. indoor and outdoor according to claim 1 and 2 wire jumper single fiber cable, is characterized in that, the material of described sheath is a kind of in PVC, LSZH, TPU, PPO material.
7. indoor and outdoor according to claim 1 and 2 wire jumper single fiber cable, is characterized in that, the described first material that blocks water enhancement Layer is the organdy material that blocks water.
8. a kind of indoor and outdoor according to claim 1 and 2 wire jumper single fiber cable, is characterized in that, the material of described outer jacket is PE or PVC material; The oxygen index of described PE material, PVC material is not less than 32.
9. the preparation method of single fiber cable for an indoor and outdoor wire jumper, it is characterized in that, described preparation method is as follows: first, choose the optical fiber that bend insensitive fiber material is made, then by extruding machine, at optical fiber outside surface, be coated hard-pressed bale layer, at hard-pressed bale layer outside surface wrapped second enhancement Layer that blocks water, by extruding machine at the second coated sheath of enhancement Layer outside surface that blocks water, at sheath outside surface wrapped first enhancement Layer that blocks water, finally by extruding machine at the first coated outer jacket of enhancement Layer outside surface that blocks water, make final products indoor and outdoor wire jumper single fiber cable.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104749722A (en) * | 2015-04-03 | 2015-07-01 | 江苏南方通信科技有限公司 | High-strength indoor single-core fiber-optic cable and production process thereof |
| CN105974538A (en) * | 2016-06-22 | 2016-09-28 | 江苏中天科技股份有限公司 | Full dry type bending-resistant pipeline output cable and manufacturing method thereof |
| CN111856671A (en) * | 2020-07-17 | 2020-10-30 | 安徽光纤光缆传输技术研究所(中国电子科技集团公司第八研究所) | Water-blocking high-temperature-resistant irradiation-resistant multi-core optical cable and preparation method thereof |
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| CN103616749B (en) | 2016-08-17 |
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Address after: 315191, No. 6, high voltage Road, Jiangshan Town, Ningbo, Zhejiang, Yinzhou District Patentee after: ZHEJIANG SHIP ELECTRONIC TECHNOLOGY Co.,Ltd. Address before: 315191, No. 31, North Road, Jiangshan Town, Yinzhou District, Zhejiang, Ningbo Patentee before: ZHEJIANG SHIP ELECTRONIC TECHNOLOGY Co.,Ltd. |