CN202631809U - All dielectric single core leading-in optical cable - Google Patents
All dielectric single core leading-in optical cable Download PDFInfo
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- CN202631809U CN202631809U CN 201220206195 CN201220206195U CN202631809U CN 202631809 U CN202631809 U CN 202631809U CN 201220206195 CN201220206195 CN 201220206195 CN 201220206195 U CN201220206195 U CN 201220206195U CN 202631809 U CN202631809 U CN 202631809U
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Abstract
The utility model discloses an all dielectric single core leading-in optical cable, which comprises an optical fiber, a suspension wire and a sheath; a cladding layer is provided on the external surface of the optical fiber, the sheath is coated on the outer surface of the cladding layer and the suspension wire, the suspension wire is fiber enhanced composite plastic FRP enhanced element, and the cladding layer is a polyvinyl fluoride plastic layer. The all dielectric single core leading-in optical cable has the optical fiber of the cladding layer which is a buffer layer of the optical fiber and a protection layer of the optical fiber, no additional machine is required, the all dielectric single core leading-in optical cable has the advantages of environmental protection, light structure and low cost, the fiber enhanced composite plastic enhanced element is used as the suspension wire, the defect that the steel wire is easy to be impacted by lightning stroke, the suspension wire has excellent lightning stroke resistance, the sheath is prepared by using a flame retardation material, so that the optical cable has good flame retardation performance.
Description
Technical field
The utility model relates to the optical fiber cable field, particularly relates to a kind of full medium list core leading in cable.
Background technology
The leading in cable of traditional FTTH (be weighed into not only family optical cable) is on covered wire cable (but also claiming butterfly optical cable), to add a steel wire as the messenger wire that strengthens element.Existing FRP makes reinforcing element in single core is registered one's residence covered wire cable, and the enhancing element of steel wire messenger wire is arranged again, and an anti-structure is repetition.Strengthening element adopts steel wire to be subject to the defective of being struck by lightning in addition.
The protective seam of traditional tightly packaged fiber is the cushion (buffer) of optical fiber in fact just; On mechanical property, can not carry out the essence protection to optical fiber; Thereby must carry out machinery and environmental protection with an additional anti-material (like materials such as aramid fibers) and sheath, could independently use.
The utility model content
The technical matters that the utility model mainly solves provides a kind of full medium list core leading in cable, and the defective that an anti-element adopts steel wire to be subject to be struck by lightning in the leading in cable of can traditional registering one's residence is simple for structure, with low cost, and superior anti-thunderbolt, anti-flaming function are arranged again.
For solving the problems of the technologies described above; The technical scheme that the utility model adopts is: a kind of full medium list core leading in cable is provided; Comprise: optical fiber, messenger wire, sheath, said optical fiber outside surface is provided with the hard-pressed bale layer, and said sheath is coated on the outer surface of said hard-pressed bale layer and messenger wire; Said messenger wire strengthens element for fibre-reinforced plastics FRP, and said hard-pressed bale layer is the PVF plastic layer.
In preferred embodiment of the utility model, said outside surface is provided with the optical fiber external diameter of hard-pressed bale layer more than or equal to 0.9mm.
In preferred embodiment of the utility model, said FRP strengthens the diameter of element more than or equal to 1.2mm.
In preferred embodiment of the utility model, the thickness of said sheath is more than or equal to 0.8mm.
In preferred embodiment of the utility model, be provided with the ointment layer between said sheath and the hard-pressed bale layer, and said ointment layer is located at the hard-pressed bale laminar surface.
In preferred embodiment of the utility model, said sheath is the low-smoke halogen-free polyolefin fire proofing.
The beneficial effect of the utility model is: the full medium list of the utility model core leading in cable has the optical fiber of hard-pressed bale layer, is the cushion of optical fiber, is again the protective seam of optical fiber, can additional mechanical and environmental protection, and structure is light and handy, and is with low cost; Adopt fibre-reinforced plastics to strengthen element and make messenger wire usefulness, avoid the defective that adopts steel wire to be subject to be struck by lightning, have superior anti-thunderbolt, sheath adopts fire proofing to process, and makes optical cable have good flame retardancy.
Description of drawings
Fig. 1 is the structural representation of the full medium list of the utility model core leading in cable one preferred embodiment;
The mark of each parts is following in the accompanying drawing: 1, optical fiber, 2, the hard-pressed bale layer, 3, messenger wire, 4, sheath.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiment of the utility model is set forth in detail, thereby the protection domain of the utility model is made more explicit defining so that advantage of the utility model and characteristic can be easier to it will be appreciated by those skilled in the art that.
See also Fig. 1, the utility model embodiment comprises:
A kind of full medium list core leading in cable comprises: optical fiber 1, messenger wire 3, sheath 4, said optical fiber 1 adopts resistant to bending G.657 optical fiber.Said optical fiber 1 outside surface is provided with hard-pressed bale layer 2, and said sheath 4 is coated on the outer surface of said hard-pressed bale layer 2 and messenger wire 3, and said messenger wire 3 is that fibre-reinforced plastics FRP strengthens element, and said hard-pressed bale layer 2 is the PVF plastic layer.
On optical fiber 1 outside surface, squeeze into one deck PVF plastics with extrusion process, form hard-pressed bale layer 2, said outside surface is provided with optical fiber 1 external diameter of hard-pressed bale layer 2 more than or equal to 0.9mm.
PVF (ethylene-tetrafluoroethylene copolymer) is commonly called as: F-40.Its english name is ETFE (ethylene-tetra-fluoro-ethylene).ETFE is the most tough fluoroplastic; It is in the polytetrafluoroethylene (PTFE) that has kept being known as " plastics king " good heat-resisting, chemical-resistance and electrical insulation capability; Radiation hardness and mechanical property have significantly to be improved; Pulling strengrth can reach 50MPa, near 2 times of teflon.Main is that its processing characteristics is greatly improved, and can adopt the job operation machine-shaping of common thermoplastics.The long-term serviceability temperature of ETFE is-80oC-220oC, and remarkable chemical resistance is arranged, and its creep resistance and compression strenght are all good than teflon, the pulling strengrth height, and length growth rate can reach 100-300%.Dielectricity is good, and radiation resistance is excellent.Especially the linear expansion coefficient of ETFE is minimum in the plastics, thereby makes ETFE become the padded coaming of optical fiber 1 the best.
By above-mentioned visible; The present invention makes optical fiber 1 itself have enough machinery and environmental protection ability with PVF as the hard-pressed bale layer 2 that cushions, strengthens sheath; And need not additional machinery and environmental protection ability independent utility must be arranged as traditional tightly packaged fiber.
Adopt fibre-reinforced plastics as messenger wire 3, solved the defective that the enhancing element adopts steel wire to be subject to be struck by lightning in traditional leading in cable of registering one's residence.Said FRP strengthens the diameter of element more than or equal to 1.2mm.
Said sheath 4 is the low-smoke halogen-free polyolefin fire proofing, and the thickness of sheath 4 has strengthened the anti-flammability of optical cable more than or equal to 0.8mm.
Be provided with the ointment layer between said sheath 4 and the hard-pressed bale layer 2, and said ointment layer is located at hard-pressed bale layer 2 surface.In sheath 4 expressing techniques, need, form the ointment layer, so that optical cable connects peeling off of hard-pressed bale layer 2 and sheath 4 when using hard-pressed bale layer 2 surperficial dip-coating ointment.
The above is merely the embodiment of the utility model; Be not thus the restriction the utility model claim; Every equivalent structure or equivalent flow process conversion that utilizes the utility model instructions and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the utility model.
Claims (6)
1. full medium list core leading in cable; It is characterized in that; Comprise: optical fiber, messenger wire, sheath, said optical fiber outside surface is provided with the hard-pressed bale layer, and said sheath is coated on the outer surface of said hard-pressed bale layer and messenger wire; Said messenger wire strengthens element for fibre-reinforced plastics FRP, and said hard-pressed bale layer is the PVF plastic layer.
2. full medium list core leading in cable according to claim 1 is characterized in that said outside surface is provided with the optical fiber external diameter of hard-pressed bale layer more than or equal to 0.9mm.
3. full medium list core leading in cable according to claim 1 is characterized in that, said FRP strengthens the diameter of element more than or equal to 1.2mm.
4. full medium list core leading in cable according to claim 1 is characterized in that the thickness of said sheath is more than or equal to 0.8mm.
5. full medium list core leading in cable according to claim 1 is characterized in that, be provided with the ointment layer between said sheath and the hard-pressed bale layer, and said ointment layer is located at the hard-pressed bale laminar surface.
6. full medium list core leading in cable according to claim 1 is characterized in that said sheath is the low-smoke halogen-free polyolefin fire proofing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220206195 CN202631809U (en) | 2012-05-10 | 2012-05-10 | All dielectric single core leading-in optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220206195 CN202631809U (en) | 2012-05-10 | 2012-05-10 | All dielectric single core leading-in optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202631809U true CN202631809U (en) | 2012-12-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220206195 Expired - Lifetime CN202631809U (en) | 2012-05-10 | 2012-05-10 | All dielectric single core leading-in optical cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202631809U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114325991A (en) * | 2022-03-04 | 2022-04-12 | 长飞光纤光缆股份有限公司 | Indoor and outdoor general self-supporting rubber-insulated-wire cable |
-
2012
- 2012-05-10 CN CN 201220206195 patent/CN202631809U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114325991A (en) * | 2022-03-04 | 2022-04-12 | 长飞光纤光缆股份有限公司 | Indoor and outdoor general self-supporting rubber-insulated-wire cable |
| CN114325991B (en) * | 2022-03-04 | 2022-06-21 | 长飞光纤光缆股份有限公司 | Indoor and outdoor general self-supporting rubber-insulated-wire cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121226 |
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| CX01 | Expiry of patent term |