CN203587858U - Central-tube-type high-strength all-dielectric drop optical fiber cable - Google Patents
Central-tube-type high-strength all-dielectric drop optical fiber cable Download PDFInfo
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- CN203587858U CN203587858U CN201320659890.8U CN201320659890U CN203587858U CN 203587858 U CN203587858 U CN 203587858U CN 201320659890 U CN201320659890 U CN 201320659890U CN 203587858 U CN203587858 U CN 203587858U
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- optical fiber
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- fiber cable
- sleeve pipe
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Abstract
The utility model discloses a central-tube-type high-strength all-dielectric drop optical fiber cable. The central-tube-type high-strength all-dielectric drop optical fiber cable comprises a loose sleeve in the center and a plurality of glass optical fibers inside the loose sleeve, wherein thixotropic waterproof fiber paste is filled between the loose sleeve and the glass optical fibers; a PE sheath layer coats the outer surface of the loose sleeve; a plurality of waterproof aramid fibers are uniformly distributed between the loose sleeve and the PE sheath layer circumferentially; at least two enhanced glass fiber plastic rods are positioned on the two sides of the loose sleeve and are embedded into the PE sheath layer. The central-tube-type high-strength all-dielectric drop optical fiber cable eliminates conventional metallic material so as to have a natural shielding effect on lightning or heavy electricity and have an obvious lightning-proof effect. Therefore, potential safety hazards existing in the construction of an access network are eliminated.
Description
Technical field
The utility model relates to a kind of optical fiber cable of introducing, and relates in particular to the full medium of a kind of central tubular high strength and introduces optical fiber cable.
Background technology
Along with the development of network technology, in communication network access aspect, carrying out light entering and copper back has become irreversible trend.Optical fiber communication has the advantages such as message capacity is large, quality is high, stable performance, anti-electromagnetic interference (EMI), strong security, is the long-range solution of development broadband access.
The circuit medium that optical fiber cable is built as optical-fiber network, it is the requisite ring of Optical Access Network (OAN) networking, it has realized linking between optical line terminal (OLT) and optical network unit (ONU), has completed from SNI (SNI) to the conversion about signaling protocol User Network Interface (UNI).As last kilometer of FTTx, Access Network is directly connected with terminal device by OLT, and its wiring is intensive and infobit capacity requirement is less, therefore requires to be applied to the optical fiber cable that accesses the network segment and have the feature of simple in structure, stable performance and easy construction.
Traditional Access Network generally adopts GYTY, GYTA (/S), several models of GYXTW with optical fiber cable, as shown in Figure 1, its structure is identical with common pipeline optical fiber cable, for guaranteeing to have good mechanical property, has adopted metal reinforcement 7 and metal armouring layer 8 during design.In actual use, these several optical fiber cables have exposed some problems: first, optical fiber cable itself is with metal material, and Access Network is directly connected with terminal with optical fiber cable, when running into thunder and lightning invasion, optical fiber cable very easily causes thunder and lightning indoor cause equipment loss or personnel's injury, to user, brings great potential safety hazard.Secondly, the wiring of the access network segment is intensive, therefore requires optical fiber cable quick construction and later maintenance easy, and traditional Access Network is with optical fiber cable outer diameter is thick, weight is larger, and the difficulty of network layout is relatively large.
Summary of the invention
The utility model provides the full medium of a kind of central tubular high strength to introduce optical fiber cable, the full medium of this central tubular high strength is introduced optical fiber cable and has been abandoned traditional metal material, make it to thunder and lightning or forceful electric power, there is natural screening, there is obvious lightning protection effect, eliminated the potential safety hazard existing in access network construction, and relatively prior art external diameter reduced 13.1%, weight saving 54.5%, reduced the consumption of material, reduced cost of products.
For achieving the above object, the technical solution adopted in the utility model is: the full medium of a kind of central tubular high strength is introduced optical fiber cable, comprise the loose sleeve pipe that is positioned at center and some glass optical fibers that are positioned at loose sleeve pipe, between described loose sleeve pipe and glass optical fiber, be filled with the thixotropy fine cream that blocks water, one PE restrictive coating is coated on described loose bushing outer surface, between described loose sleeve pipe and PE restrictive coating, along being circumferentially all distributed with some waterproofing type aramid fibers, at least 2 enhancement mode fiberglass plastic bars are positioned at described loose sleeve pipe both sides and embed described PE restrictive coating.
In technique scheme, further improve technical scheme as follows:
In such scheme, described glass optical fiber is single-mode fiber or multimode optical fiber.
Because technique scheme is used, the utility model compared with prior art has following advantages:
1. the full medium of the utility model central tubular high strength is introduced optical fiber cable, one PE restrictive coating is coated on described loose bushing outer surface, between described loose sleeve pipe and PE restrictive coating along being circumferentially all distributed with some waterproofing type aramid fibers, at least 2 enhancement mode fiberglass plastic bars are positioned at described loose sleeve pipe both sides and embed described PE restrictive coating, make its global sections not containing any metal ingredient, thunder and lightning is had to natural screening, there is high safety in utilization, and external diameter is little, lightweight, intensity is high, and lateral pressure resistant performance is good.
2. the full medium of the utility model central tubular high strength is introduced optical fiber cable, its at least 2 enhancement mode fiberglass plastic bars are positioned at described loose sleeve pipe both sides and embed described PE restrictive coating, greatly reduce expansion and contraction after PE restrictive coating, alleviated because of the impacts on optical fiber attenuation different from PBT sleeve pipe shrinkability of PE sheath, guaranteed the stability of optical cable transmission performance, it is lightweight, than traditional GYTY structure external diameter, reduced 13.1%, weight saving 54.5%, reduced the consumption of material, reduced cost of products, for the promotion and application of product provide power-assisted, cost basis has been established in the great development of also building for China FTTx, secondly, its good mechanical property can meet multiple severe applied environment, for the development of Access Network provides a kind of brand-new solution.
Accompanying drawing explanation
Accompanying drawing 1 is existing Access Network optical fiber cable GYTA structural drawing structural representation;
Accompanying drawing 2 is existing Access Network optical fiber cable GYTA (/S) structural drawing structural representation;
Accompanying drawing 3 is that the full medium of the utility model central tubular high strength is introduced optical fiber cable structural representation;
Accompanying drawing 4 is that the full medium of the utility model central tubular high strength is introduced optical fiber cable process chart.
In above accompanying drawing: 1, loose sleeve pipe; 2, glass optical fiber; 3, the thixotropy fine cream that blocks water; 4, PE restrictive coating; 5, waterproofing type aramid fiber; 6, enhancement mode fiberglass plastic bar; 7, metal reinforcement; 8, metal armouring layer.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described:
Embodiment: the full medium of a kind of central tubular high strength is introduced optical fiber cable, comprise the loose sleeve pipe 1 that is positioned at center and the some glass optical fibers 2 that are positioned at loose sleeve pipe 1, between described loose sleeve pipe 1 and glass optical fiber 2, be filled with the thixotropy fine cream 3 that blocks water, one PE restrictive coating 4 is coated on described loose sleeve pipe 1 outside surface, between described loose sleeve pipe 1 and PE restrictive coating 4, along being circumferentially all distributed with some waterproofing type aramid fibers 5, at least 2 enhancement mode fiberglass plastic bars 6 are positioned at described loose sleeve pipe 1 both sides and embed described PE restrictive coating 4.Described waterproofing type aramid fiber is by being positioned at the aramid yarn at center and being coated on the curing resin layer of aramid yarn outside surface and being stained with waterproofing type particulate matter.
Above-mentioned glass optical fiber 2 is single-mode fiber or multimode optical fiber.
In structured design process, we have considered emphatically the feature of Access Network wiring, i.e. following 3 points:
A, different from backbone network, the ONU layout of Access Network end is comparatively disperseed, and geographical environment may be different, therefore requires wiring to have dirigibility, can adapt to multiple applied environment;
B, Access Network optical fiber cable are to be all generally introduced into be indoorly connected with equipment, therefore security must strictly be considered the potential safety hazard existing in access network construction process before stopping.
C, access network segment port are more, and the required investment of networking is huge, and therefore operator extremely pays close attention to cost factor in networking process, if network safe, that stablized of minimum cost construction is how the direction that we must consider.
We have comprehensively analyzed structural advantages and the defect of existing Access Network optical fiber cable, and with reference to the like product on foreign market, final utility model the full medium of central tubular high strength introduce optical fiber cable---GYFXTW, its structural behaviour, difficulty of construction, material cost all can meet above-mentioned designing requirement.
The utility model optical fiber cable structure is described as: central beam tube type sleeve pipe, the vertical bag of waterproofing type aramid yarn, the outer two parallel FRP of cable core, outer protective polyethylene cover parcel.
The relatively traditional Access Network optical fiber cable of the utility model, external diameter is little, lightweight, intensity is high, and lateral pressure resistant performance is good, and following table is optical fiber cable canonical parameter table:
Table 1 GYFXTW optical fiber cable canonical parameter table
When the utility model sheath operation is produced, we have carried out special improvement to mould and head, make the wall thickness on the outer two interior edges of parallel FRP distance of cable core be decreased to 0.1mm, thus with the tight phase embedding of sheath, changed the serious present situation of central beam tube type optical fiber cable sheath post shrinkage.
Referring to Fig. 3, Fig. 3 is the process chart that the full medium of central tubular high strength is introduced optical fiber cable, comprising:
A. optical fiber warehouse-in: the optical fiber to warehouse-in screens, and the geometrical property of measuring fiber and optical characteristics, select the optical fiber that performance is qualified;
B. optical fiber coloring: optical fiber is coated to different colors, can select whole chromatogram or the chromatogram of piloting, require painted rear optical fibre high temp colour-fast, guarantee to be easy to identify when the later stage continues;
C. cover is moulded; Optical fiber after painted is positioned over and is filled with thixotropy and blocks water in the high-modulus sleeve pipe of fine cream, and by controlling retractable cable speed and tank temperature, make sleeve pipe inner fiber there is stable remaining long control and transport property;
D. sheath: multiply aramid yarn is evenly distributed on to sleeve surface, penetrates two FRP head is parallel, then by extrusion head at cable core outer wrapping one deck oversheath.
E. detect outbound: arrange every batch of finished product optical fiber cable to do full performance test, guarantee qualified rear encapsulation outbound.
While adopting the full medium of above-mentioned central tubular high strength to introduce optical fiber cable, one PE restrictive coating is coated on described loose bushing outer surface, between described loose sleeve pipe and PE restrictive coating along being circumferentially all distributed with some waterproofing type aramid fibers, at least 2 enhancement mode fiberglass plastic bars are positioned at described loose sleeve pipe both sides and embed described PE restrictive coating, make its global sections not containing any metal ingredient, thunder and lightning is had to natural screening, there is high safety in utilization, and external diameter is little, lightweight, intensity is high, and lateral pressure resistant performance is good; Again, its at least 2 enhancement mode fiberglass plastic bars are positioned at described loose sleeve pipe both sides and embed described PE restrictive coating, greatly reduce expansion and contraction after PE restrictive coating, alleviated because of the impacts on optical fiber attenuation different from PBT sleeve pipe shrinkability of PE sheath, guaranteed the stability of optical cable transmission performance, it is lightweight, than traditional GYTY structure external diameter reduced 13.1%, weight saving 54.5%, reduced the consumption of material, reduced cost of products, for the promotion and application of product provide power-assisted, cost basis has been established in the great development of also building for China FTTx; Secondly, its good mechanical property can meet multiple severe applied environment, for the development of Access Network provides a kind of brand-new solution.
Above-described embodiment is only explanation technical conceive of the present utility model and feature, and its object is to allow person skilled in the art can understand content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences of doing according to the utility model Spirit Essence change or modify, within all should being encompassed in protection domain of the present utility model.
Claims (2)
1. the full medium of central tubular high strength is introduced optical fiber cable, it is characterized in that: comprise the loose sleeve pipe (1) that is positioned at center and the some glass optical fibers (2) that are positioned at loose sleeve pipe (1), between described loose sleeve pipe (1) and glass optical fiber (2), be filled with the thixotropy fine cream (3) that blocks water, one PE restrictive coating (4) is coated on described loose sleeve pipe (1) outside surface, between described loose sleeve pipe (1) and PE restrictive coating (4) along being circumferentially all distributed with some waterproofing type aramid fibers (5), at least 2 enhancement mode fiberglass plastic bars (6) embed in described PE restrictive coating (4) and are positioned at described loose sleeve pipe (1) both sides.
2. the full medium of central tubular high strength according to claim 1 is introduced optical fiber cable, it is characterized in that: described glass optical fiber (2) is single-mode fiber or multimode optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320659890.8U CN203587858U (en) | 2013-10-24 | 2013-10-24 | Central-tube-type high-strength all-dielectric drop optical fiber cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320659890.8U CN203587858U (en) | 2013-10-24 | 2013-10-24 | Central-tube-type high-strength all-dielectric drop optical fiber cable |
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| Publication Number | Publication Date |
|---|---|
| CN203587858U true CN203587858U (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320659890.8U Expired - Fee Related CN203587858U (en) | 2013-10-24 | 2013-10-24 | Central-tube-type high-strength all-dielectric drop optical fiber cable |
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| CN (1) | CN203587858U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103513379A (en) * | 2013-10-24 | 2014-01-15 | 江苏亨通光电股份有限公司 | Central-tube-type high-strength all-dielectric introductive optical fiber cable |
| CN107367812A (en) * | 2017-09-04 | 2017-11-21 | 江苏亨通光电股份有限公司 | The parallel stiffener flexible optical cable of central tubular and fiber optic cable manufacture method |
-
2013
- 2013-10-24 CN CN201320659890.8U patent/CN203587858U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103513379A (en) * | 2013-10-24 | 2014-01-15 | 江苏亨通光电股份有限公司 | Central-tube-type high-strength all-dielectric introductive optical fiber cable |
| CN107367812A (en) * | 2017-09-04 | 2017-11-21 | 江苏亨通光电股份有限公司 | The parallel stiffener flexible optical cable of central tubular and fiber optic cable manufacture method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140507 Termination date: 20151024 |
|
| EXPY | Termination of patent right or utility model |