CN102445737A - Tightly-covered optical fiber low-smoke zero-halogen wiring optical cable - Google Patents
Tightly-covered optical fiber low-smoke zero-halogen wiring optical cable Download PDFInfo
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- CN102445737A CN102445737A CN2011103790713A CN201110379071A CN102445737A CN 102445737 A CN102445737 A CN 102445737A CN 2011103790713 A CN2011103790713 A CN 2011103790713A CN 201110379071 A CN201110379071 A CN 201110379071A CN 102445737 A CN102445737 A CN 102445737A
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Abstract
The invention relates to a tightly-covered optical fiber low-smoke zero-halogen wiring optical cable, which is characterized in that a glass optical fiber covered by 250mu m acrylic ester is covered with plastic by antiflaming polyethylene to obtain a 0.9mm tightly-covered optical fiber; glass fiber reinforced plastic serves as a center reinforced core; the tightly-covered optical fiber carries out layer stranding around the center reinforced core; aramid fiber yarn dipped by super-absorbent polymer serves as a construction member of a cable core, which has the ant-tensile, buffering and water-block characteristics; and the antiflaming polyethylene serves as an optical cable sheath. The tightly-covered optical fiber low-smoke zero-halogen wiring optical cable can be used for containing less than 24 cores of tightly-covered optical cable of which the diameter is 0.9mm, has the performance of resisting ultraviolet rays, resisting flaming and protecting moisture and has good optical fiber performance at the temperature of 40DEG C below zero.
Description
Technical field
The present invention relates to a kind of power cable product, be specifically related to a kind of tight tube fiber low smoke, zero halogen wiring optical cable.
Background technology
Traditionally, the optical cable of in industry, using has two kinds of designs: the outdoor use ointment is filled elastic sleeve tube type (comprise loose sleeve layer strand type and central tubular, see Fig. 1) and indoor tight tube fiber formula.Ointment filled type optical cable mainly contains elastic sleeve tube type or ribbon fiber formula, and optical fiber is in the strainless basically environment, and this is necessary in outdoor rugged surroundings with long distance applications for long term exposure.The performance of this optical cable must satisfy the standard at the Bel GR-20-CORE of industry approved, the regulation that this standard is detailed the machinery of outdoor use optical cable, environment and physics requirement.The minimum of every optical fiber allows attenuation change: single-mode fiber is 0.05～0.10dB when 1550nm.These decay require to have reflected long actual needs apart from outdoor optical cable.。
In addition; For the short relatively optical cable of mounting distance; Main big core is installed is counted the optical cable that backbone optical cable or little core are counted to desktop (FTTD), typical range is no more than 300m, and the vertical optical cable of tight tube fiber and ointment filled type is all adopted in the design of existing many indoor optical cables.The performance requirement of tight tube fiber optic cable design is seen Bel GR-40 9-CORE standard.This standard has been listed the general requirement of this kind optical cable.Because this optical cable is to be used for indoorly, must satisfy in the national electrical code (NEC770) regulation of relevant anti-flammability.The design of several kinds of new indoor/outer optical cables has been announced in optical cable industry in recent years, yet in a single day these novel optical cables use in buildings just has similar limitation with other outdoor optical cables: the cost that external diameter is big, pliability is poor, hard to manage and the terminal is connected is high.
Summary of the invention
The objective of the invention is to overcome the shortcoming of prior art; A kind of optical cable is characterized in that, moulding the back with the glass optical fiber of 250 μ m acrylate-coated with flame-proof polyethylene (FRPE) cover is the tight tube fiber of 0.9mm; With glass reinforced plastic (GRP) as the center strengthening core; Tight tube fiber carries out layer strand around it, and the aramid yarn of super water absorption polymer dipping is as the member of anti-of cable core, buffering and water resistance characteristic, and flame-proof polyethylene (FRPE) is as the sheath of optical cable.
Scheme further is: said cable core and sheath can be separated from each other through tearing rope in the cable.
Description of drawings
Fig. 1 is embodiment of the present invention cross-section of cable figure.
1-FRPE; The 2-aramid yarn; The 3-moisture barrier; The 4-strengthening core; 5-tears rope.
Embodiment
The present invention has developed a kind of tight cover wiring optical cable that is applicable between the groups of building.Moulding the back with the glass optical fiber of 250 μ m acrylate-coated with flame-proof polyethylene (FRPE) cover is the tight tube fiber of 0.9mm.As the center strengthening core, tight tube fiber carries out layer strand around it with glass reinforced plastic (GRP); The aramid yarn of super water absorption polymer dipping as cable core anti-open, the member of buffering and water resistance characteristic; Use the sheath of identical flame-proof polyethylene (FRPE) at last as optical cable.Because these aramid fiber silks make cable core have good block-water performance, thereby needn't use cable core band or greasy for preventing water, so just are easy to install this optical cable.The FRPE sheath material is that antiultraviolet and moisture absorb, and its fire resistance is through the test of UL OFNR type; Aramid fiber silk cushion can make cable core effectively separate with sheath, so that optical cable has good fade performance between working temperature-40 ℃～+ 70 ℃.This optical cable compared with traditional P VC or L SZH optic cable design tangible advantage: traditional P VC or LSZH optic cable design exemplary shortcomings be no water preventing ability can, antiultraviolet not, and operating temperature range is narrow.Cable core and sheath are separated from each other, and are added with one in the cable and tear rope so that cable core is easy to peel off comes, and can make the suffered injury possibility of tight tube fiber for minimum.This cable outer diameter is little, and pliability is good, and operating temperature range is at-40 ℃～+ 70 ℃, adopts the Arid-core T M technology that blocks water, but and uvioresistant.With 12 core optical cables is example, compares employing with traditional outdoor loosely shielded optical cable and directly can significantly practice thrift cost as each termination of 0.9mm tight tube fiber that the terminal is connected.Wherein, tight cover and sheath all adopt low smoke, zero halogen (L SZH) material, when catching fire, just can avoid producing corrosivity and toxic gas like this.The properties of optical fiber cable characteristic comprises mechanical property and environmental performance, cable configuration and weight.The deviser has described the direct terminal owing to the 0.9mm tight tube fiber, thereby sheath has the convenience of insertion, peels off and potential advantages such as cost savings easily.Optical cable of the present invention makes an experiment in strict accordance with the condition and the standard of Bel GR-409 the 1st clause vertical wirings optical cable standard and the 1st water preventing ability of Bel GR-20 and anti-uv, and is respond well.
The outdoor use optical cable of standard must carry out the terminal and connect in getting into buildings 50ft (1ft=0.3048m), between outdoor optical cable and inside cable, setting up transit point, or introduce with metallic conduit.This novel optical cable can directly get into interface point through required transit point.Although design according to the outdoor optical cable condition, this optical cable still keeps the easy installation capability of tight sleeve optic cable.Equally, the TBF optical cable seems to be equal to the wiring optical cable of standard, and the 0.9mm tight tube fiber can directly carry out joint, has therefore eliminated required stripping tool or the tail optical fiber joint of loosely shielded optical cable.The Arid-core T M system of blocking water is an a kind of dry type technology, so do not block water in the cable compound or ointment need be cleared up.This optical cable is installed fast than other chamber inside/outside optical cables and easily, therefore can be practiced thrift manpower.Another benefit of TBF optical cable of the present invention is owing to use the Halogen compound, therefore can satisfy the requirement of UL about rectilinear optical cable.This just mean this optical cable be rectilinear nonconductive optical fiber cable (OFNR) be again low smoke, zero halogen type (L SZH) optical cable.When cable contained halogens chlorine (like PVC) or fluorine (like PVDF), burning will disengage potential objectionable impurities and a large amount of cigarettes, and in fact, main harm is and the relevant smoke and gas that catch fire, and does not lie in flame or heat.At first, secondly the safety of account of human be communication and other electronic equipments valuable, accurate in the modern factories.When burning of Halogen compound and generation corrosive gas, bring objectionable impurities simultaneously.Corrosive gas ability erode metallic surfaces and other coating, and the function of destruction key element.Though so fire extinguishes, the infringement that cigarette and corrosive gas brought also exists.L SZH optical cable can significantly reduce these harm, and it is not halogen-containing, and the flue gas that when burning produces reduces.For L SZH optical cable safety factor is very significant, therefore is used for for people and equipment requirements very high U.S. gunship and means of transportation (like the tunnel) being arranged.
In sum, traditional P VC tight sleeve optic cable generally is not suitable for outdoor utility.The shortage of the system that blocks water makes water or the steam can be along moving in the cable, so that the long-term reliability of optical cable descends.The PVC tight sleeve optic cable becomes bad-20 ℃ of performances, and low temperature becomes fragile padded coaming, and finally can cause fibre strain to increase.From the cable jacket viewpoint, the PVC material is used for tight sleeve optic cable can not reach the protection that outdoor optical cable provided that the PE material is used for standard, and softer being prone to during installation of PVC sheath abrades, and they are also aging soon than PE sheath.The present invention can be used for the chamber inside/outside LANs tight sleeve optic cable of most of LAN, and FRPE (L SZH) is used for cushion and sheath, system blocks water in that PVC is changed in main improvement.Final design makes this optical cable satisfy the requirement of working temperature window and has the block-water performance of loosely shielded optical cable.And the major advantage that has kept tight sleeve optic cable is as installing easy, vertical wiring.
In sum; A kind of novel wind-force cable that the present invention relates to has excellent antitorque commentaries on classics, high temperature performance, insulation electrical performance, mechanical property and has characteristics such as intensity height, good toughness, wear-resisting, cold-resistant, antitorque commentaries on classics, oil resistant, water-fast, ageing-resistant, weather, windproof, antibiotic, mildew-resistant, uvioresistant and environmental protection, can satisfy the request for utilization of wind-force cable fully.
Claims (2)
1. optical cable; It is characterized in that; Moulding the back with the glass optical fiber of 250 μ m acrylate-coated with flame-proof polyethylene (FRPE) cover is the tight tube fiber of 0.9mm, and as the center strengthening core, tight tube fiber carries out layer strand around it with glass reinforced plastic (GRP); The aramid yarn of super water absorption polymer dipping as cable core anti-open, the member of buffering and water resistance characteristic, flame-proof polyethylene (FRPE) is as the sheath of optical cable.
2. a kind of optical cable as claimed in claim 1 is characterized in that: said cable core and sheath can be separated from each other through tearing rope in the cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103790713A CN102445737A (en) | 2011-11-25 | 2011-11-25 | Tightly-covered optical fiber low-smoke zero-halogen wiring optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103790713A CN102445737A (en) | 2011-11-25 | 2011-11-25 | Tightly-covered optical fiber low-smoke zero-halogen wiring optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102445737A true CN102445737A (en) | 2012-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103790713A Pending CN102445737A (en) | 2011-11-25 | 2011-11-25 | Tightly-covered optical fiber low-smoke zero-halogen wiring optical cable |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103941360A (en) * | 2014-03-27 | 2014-07-23 | 江苏通鼎光电股份有限公司 | Novel pipeline optical cable |
| WO2022094845A1 (en) * | 2020-11-05 | 2022-05-12 | Leoni Kabel Gmbh | Fiber insulator with fiber optical cable |
| CN116931208A (en) * | 2023-09-14 | 2023-10-24 | 江苏亨通海洋光网系统有限公司 | Nonmetal strong impact resistant optical cable and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1737232A (en) * | 2005-08-31 | 2006-02-22 | 罗雄 | Water resistance aramid fiber yarn and method for producing the same |
| CN1794020A (en) * | 2005-10-31 | 2006-06-28 | 广州关键光电子技术有限公司 | Indoor optical cable and its production method |
| CN201212920Y (en) * | 2008-06-11 | 2009-03-25 | 江苏通鼎光电股份有限公司 | Micro single-core and multi-core optical fiber |
| CN101487916A (en) * | 2008-11-17 | 2009-07-22 | 江苏永鼎股份有限公司 | Layer stranded full-medium optical cable |
-
2011
- 2011-11-25 CN CN2011103790713A patent/CN102445737A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1737232A (en) * | 2005-08-31 | 2006-02-22 | 罗雄 | Water resistance aramid fiber yarn and method for producing the same |
| CN1794020A (en) * | 2005-10-31 | 2006-06-28 | 广州关键光电子技术有限公司 | Indoor optical cable and its production method |
| CN201212920Y (en) * | 2008-06-11 | 2009-03-25 | 江苏通鼎光电股份有限公司 | Micro single-core and multi-core optical fiber |
| CN101487916A (en) * | 2008-11-17 | 2009-07-22 | 江苏永鼎股份有限公司 | Layer stranded full-medium optical cable |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103941360A (en) * | 2014-03-27 | 2014-07-23 | 江苏通鼎光电股份有限公司 | Novel pipeline optical cable |
| WO2022094845A1 (en) * | 2020-11-05 | 2022-05-12 | Leoni Kabel Gmbh | Fiber insulator with fiber optical cable |
| CN116931208A (en) * | 2023-09-14 | 2023-10-24 | 江苏亨通海洋光网系统有限公司 | Nonmetal strong impact resistant optical cable and preparation method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120509 |