CN214225519U - Novel strengthen indoor optical cable - Google Patents
Novel strengthen indoor optical cable Download PDFInfo
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- CN214225519U CN214225519U CN202023129832.3U CN202023129832U CN214225519U CN 214225519 U CN214225519 U CN 214225519U CN 202023129832 U CN202023129832 U CN 202023129832U CN 214225519 U CN214225519 U CN 214225519U
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Abstract
The utility model discloses a novel reinforced indoor optical cable, which comprises a sheath, a water blocking unit and an optical fiber unit from outside to inside in sequence, wherein a plurality of nonmetal reinforcing rods are embedded in the sheath, the nonmetal reinforcing rods are of a spiral structure, the spiral pitch is 30-150mm, and the spiral angle is 30-75 degrees; the water-blocking unit is a dry water-blocking unit; the optical fiber unit comprises a flexible loose tube and a plurality of optical fibers in the flexible loose tube, and a water blocking element is arranged among the optical fibers; the flexible loose tube is made of thermoplastic elastomer and can be easily peeled off by directly using a nail; the water blocking component is a dry water blocking component. The utility model discloses indoor optical cable has high side pressure performance, high tensile property, high bending property concurrently, protection against rodents stings, full medium, easily opens to shell, lays the mode diversified and the cost is lower, environmental protection.
Description
Technical Field
The utility model relates to an optical cable technical field, concretely relates to novel strengthen indoor optical cable.
Background
Because the indoor environment is milder than the outdoor environment, most indoor optical cables have simple structures, and the requirements on stretching and lateral pressure are not high, most indoor optical cables with simple structures can be used, but some indoor environments with severe conditions exist, such as: 1. the mouse damage is frequent, and certain machine room optical cables are complicated and can be often damaged by mice; 2. the laying position is special, and the laying position is often damaged by external force such as treading and pressing; 3. the laying environment is variable, various forms such as direct burial, overhead arrangement, vertical arrangement and the like are often required to be combined, and the conventional indoor optical cable is difficult to be competent; 4. the indoor optical cable optical fiber units basically and completely adopt a tightly-covered fiber structure, a tight covering layer needs to be removed by professional wire stripping pliers, and construction is complicated. Traditional indoor optical cable often need increase spiral steel wire armor when resisting the rat damage, can resist the rat damage effectively through spiral steel wire armor, but this kind of structure can strengthen the side pressure only, can't promote tensile properties, that is to say, still need add aramid fiber in addition and improve its tensile properties, aramid fiber is expensive, increases a lot of costs, and meanwhile, spiral steel wire still has electrically conductive risk except can increasing the optical cable dead weight. Patent CN201710879919.6 uses a similar structure, embedding steel wires in a sheath, except that: the mode of laying that this patent adopted is for directly putting, and optical cable bending property is not good, and reinforcing material is the steel wire, has the electrically conductive risk. Therefore, it is highly desirable to design an all-purpose indoor optical cable with high lateral pressure performance, high tensile performance, high bending performance, rat bite prevention, all media, easy stripping, diversified laying modes, low cost and environmental protection.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a novel strengthen indoor optical cable to solve the not enough of prior art.
The utility model adopts the following technical scheme:
a novel reinforced indoor optical cable comprises a sheath, a water blocking unit and an optical fiber unit from outside to inside in sequence,
a plurality of non-metal reinforcing rods are embedded in the sheath, the non-metal reinforcing rods are of a spiral structure, the spiral pitch is 30-150mm, and the spiral angle is 30-75 degrees; the tensile strength of the non-metal reinforcing rod is more than or equal to 1300MPa, the Young modulus is more than or equal to 50Gpa, the rigidity is less than or equal to 0.3, the diameter is 0.4-2mm, and the wall thickness is less than or equal to 2;
the water-blocking unit is a dry water-blocking unit;
the optical fiber unit comprises a flexible loose tube and a plurality of optical fibers in the flexible loose tube, and a water blocking element is arranged among the optical fibers; the tensile strength of the flexible loose tube is more than or equal to 12Mpa, the elongation at break is more than or equal to 400%, the Vicat softening point is more than or equal to 120 ℃, the Shore hardness is 40-50, the flexible loose tube is made of a thermoplastic elastomer and can be easily stripped by directly using a nail, the outer diameter of 1-8 cores/flexible loose tubes is 0.8-1.1mm, the wall thickness is 0.1-0.15mm, the outer diameter of 9-12 cores/flexible loose tubes is 1.4-1.5mm, and the wall thickness is 0.1-0.15 mm; the water blocking component is a dry water blocking component.
Furthermore, the number of the non-metal reinforcing rods is 2-8.
Furthermore, the spiral pitch of the non-metal reinforcing rod is determined according to the cable diameter, the cable diameter is less than or equal to 5mm, the pitch is 30-60, the cable diameter is 5-10mm, the pitch is 60-120, the cable diameter is greater than or equal to 10mm, and the pitch is 120-150.
Further, the spiral angle of the non-metal reinforcing rod is determined according to the rigidity of the optical cable, the larger the rigidity of the optical cable is, the smaller the spiral angle is, and the rigidity of the optical cable is 75-30 degrees from 0.5-1 corresponding to the spiral angle.
Furthermore, the nonmetal reinforcing rod is made of tough fiber materials, including glass fiber yarns, ultra-high molecular weight polyethylene fibers or carbon fibers.
Further, the sheath material comprises polyethylene, flame retardant polyethylene or low smoke zero halogen material.
Further, the dry type water blocking unit comprises a water blocking tape or water blocking yarns, the expansion rate of the water blocking tape is more than or equal to 16mm/min, and the expansion height is more than or equal to 12 mm; the expansion rate of the water-blocking yarn is more than or equal to 70mL/g/min, and the expansion rate is more than or equal to 70 mL/g.
Further, the thermoplastic elastomer comprises a thermoplastic polyester elastomer or a low smoke zero halogen material or a thermoplastic polyurethane elastomer.
Further, the optical fiber is 1-12 cores and is a discrete optical fiber or an optical fiber ribbon.
Further, the dry water blocking component includes water blocking yarn or powder.
The utility model has the advantages that:
the tensile property is excellent: the indoor optical cable of the utility model has excellent tensile property, the tensile force can reach 2000N, the fiber change is less than or equal to 0.33 percent, and the additional attenuation is less than or equal to 0.05 dB/km; the tensile force value (2000N) is far higher than that of the conventional indoor optical cable, expensive aramid fiber is not required, and the cost is greatly reduced;
excellent side pressure performance: the spiral non-metal reinforcing rod embedded into the sheath greatly improves the lateral pressure resistance of the optical cable, the lateral pressure resistance can reach 3000N, and the additional attenuation is less than or equal to 0.05 dB/km;
excellent bending performance: the spiral non-metal reinforcing rod adopts proper spiral pitch and spiral angle, so that excellent bending performance of the optical cable is guaranteed, and the bending diameter can reach 5 x the outer diameter of the optical cable;
preventing mouse biting: the spiral non-metal reinforcing rod embedded into the sheath can effectively resist the attack of rodents such as mice and the like;
no risk of conduction: the all-dielectric design has no conductive risk;
easy stripping: the flexible loose tube is made of thermoplastic elastomer, so that the loose tube can be easily pulled out by a nail without using special tools;
the laying mode is diversified: the full-dry structure is free of oil paste filling, is suitable for pipelines, direct burial and self-supporting overhead, and can be laid vertically;
and (3) environmental protection: the full-dry structure, no ointment filling, safety and environmental protection, convenient construction and no need of wiping ointment.
Drawings
Fig. 1 is a schematic cross-sectional view of the present invention.
Fig. 2 is a schematic structural diagram of the present invention.
FIG. 3 is a schematic view of the spiral pitch of the non-metallic reinforcing rods.
FIG. 4 is a schematic view of the spiral angle of the non-metal reinforcing rod.
Detailed Description
The invention is further explained below with reference to examples and figures. The following examples are provided only for illustrating the present invention and are not intended to limit the scope of the present invention.
A novel reinforced indoor optical cable is shown in figures 1 and 2 and sequentially comprises a sheath 2, a water blocking unit 3 and an optical fiber unit from outside to inside;
a plurality of nonmetal reinforcing rods 1 are embedded in the sheath 2, and the nonmetal reinforcing rods 1 are made of tough fiber materials including but not limited to glass fiber yarns, ultrahigh molecular weight polyethylene fibers or carbon fibers; the diameter is 0.4-2mm and is less than or equal to the wall thickness/2; the tensile strength is more than or equal to 1300MPa, the Young modulus is more than or equal to 50Gpa, and the rigidity is less than or equal to 0.3; the number of the spiral pitch is preferably 2-8, a spiral structure is adopted, the spiral pitch is 30-150mm (shown in figure 3), the cable diameter is less than or equal to 5mm, the pitch is 30-60, the cable diameter is 5-10mm, the pitch is 60-120, the cable diameter is more than or equal to 10mm, and the pitch is 120-150; the spiral angle is 30-75 degrees (as shown in figure 4), the larger the rigidity of the optical cable is, the smaller the spiral angle is, and the spiral angle corresponding to the rigidity of the optical cable from 0.5-1 is 75-30 degrees; the sheath 2 can be made of polyethylene, flame-retardant polyethylene or a low-smoke halogen-free material, but is not limited thereto, and when the flame-retardant polyethylene or the low-smoke halogen-free material is adopted, the optical cable has flame-retardant performance;
the water blocking unit 3 is a dry water blocking unit and comprises a water blocking tape or a water blocking yarn or other dry components which effectively block water, and the water blocking tape requires: the expansion rate is more than or equal to 16mm/min, the expansion height is more than or equal to 12mm, and optionally, the thickness of the water-blocking tape is 0.2 mm; the water-blocking yarn requires: the expansion rate is more than or equal to 70mL/g/min, the expansion rate is more than or equal to 70mL/g, and optionally, the water-blocking yarn adopts ZS-3.0 and the linear density is 3000 m/kg;
the optical fiber unit comprises a flexible loose tube 4 and a plurality of optical fibers 5 in the flexible loose tube, and a water blocking element 6 is arranged among the optical fibers; the flexible loose tube 4 is made of thermoplastic elastomer, including thermoplastic polyester elastomer or low-smoke halogen-free material or thermoplastic polyurethane elastomer, but not limited to, the flexible loose tube can be easily stripped by directly using a nail, the tensile strength is more than or equal to 12Mpa, the breaking elongation is more than or equal to 400%, the Vicat softening point is more than or equal to 120 ℃, the Shore hardness is 40-50, the outer diameter of 1-8 core/flexible loose tube is 0.8-1.1mm, the wall thickness is 0.1-0.15mm, the outer diameter of 9-12 core/flexible loose tube is 1.4-1.5mm, and the wall thickness is 0.1-0.15 mm; the number of the optical fibers 5 is 1-12, the optical fibers can be discrete optical fibers or optical fiber ribbons, and G657A1 and A2 can be adopted, so that the optical fiber has excellent bending performance; the water blocking element 6 is a dry water blocking element and comprises water blocking yarn or water blocking powder, the water blocking yarn and the water blocking powder meet the requirements of the outer diameter of the flexible loose tube 4 and water blocking, and if the water blocking yarn is adopted, the water blocking yarn with the linear density of S600 can be selected.
With the above structure, the optical cable:
(1) the stretching force can reach 2000N, the fiber change is less than or equal to 0.33 percent, and the additional attenuation is less than or equal to 0.05 dB/km;
(2) the lateral pressure resistance can reach 3000N, and the additional attenuation is less than or equal to 0.05 dB/km;
(3) the spiral nonmetal reinforcing rods 1 are used for armoring, the excellent bending performance of the optical cable is guaranteed by proper spiral pitch and spiral angle, and the bending diameter can reach 5 x of the outer diameter of the optical cable;
(4) the spiral non-metal reinforcing rod can effectively resist the damage of rodents;
(5) the all-dielectric design has no conductive risk;
(6) the flexible loose tube is made of thermoplastic elastomer materials, special tools are not needed, and the loose tube can be peeled off by using a nail, so that the construction is convenient;
(7) the method is suitable for various laying environments including pipelines, direct burial and self-supporting overhead, and is also suitable for vertical laying;
(8) the full-dry structure is free of grease filling, safe and environment-friendly, and the grease is not required to be erased during construction, so that the construction is more convenient.
Claims (10)
1. A novel reinforced indoor optical cable is characterized by sequentially comprising a sheath, a water blocking unit and an optical fiber unit from outside to inside,
a plurality of non-metal reinforcing rods are embedded in the sheath, the non-metal reinforcing rods are of a spiral structure, the spiral pitch is 30-150mm, and the spiral angle is 30-75 degrees; the tensile strength of the non-metal reinforcing rod is more than or equal to 1300MPa, the Young modulus is more than or equal to 50Gpa, the rigidity is less than or equal to 0.3, the diameter is 0.4-2mm, and the wall thickness is less than or equal to 2;
the water-blocking unit is a dry water-blocking unit;
the optical fiber unit comprises a flexible loose tube and a plurality of optical fibers in the flexible loose tube, and a water blocking element is arranged among the optical fibers; the tensile strength of the flexible loose tube is more than or equal to 12Mpa, the elongation at break is more than or equal to 400%, the Vicat softening point is more than or equal to 120 ℃, the Shore hardness is 40-50, the flexible loose tube is made of a thermoplastic elastomer and can be easily stripped by directly using a nail, the outer diameter of 1-8 cores/flexible loose tubes is 0.8-1.1mm, the wall thickness is 0.1-0.15mm, the outer diameter of 9-12 cores/flexible loose tubes is 1.4-1.5mm, and the wall thickness is 0.1-0.15 mm; the water blocking component is a dry water blocking component.
2. A novel reinforced indoor optical cable as claimed in claim 1, wherein the number of the non-metallic reinforcing rods is 2 to 8.
3. The novel indoor reinforced optical cable as claimed in claim 1, wherein the spiral pitch of the non-metal reinforcing rods is determined according to the cable diameter, the cable diameter is less than or equal to 5mm, the pitch is 30-60, the cable diameter is 5-10mm, the pitch is 60-120, the cable diameter is greater than or equal to 10mm, and the pitch is 120-150.
4. The novel indoor optical fiber cable with reinforcement according to claim 1, wherein the helix angle of the non-metal reinforcing rod is determined according to the rigidity of the optical fiber cable, the greater the rigidity of the optical fiber cable, the smaller the helix angle, and the corresponding helix angle of the optical fiber cable rigidity from 0.5 to 1 is 75 degrees to 30 degrees.
5. The novel indoor optical cable of claim 1, wherein the non-metallic reinforcing rods are made of tough fiber materials including glass fiber yarns, ultra-high molecular weight polyethylene fibers or carbon fibers.
6. A novel reinforced indoor optical cable as claimed in claim 1, wherein the sheath material comprises polyethylene, flame retardant polyethylene or low smoke zero halogen material.
7. A novel reinforced indoor optical cable as claimed in claim 1, wherein the dry water blocking unit comprises a water blocking tape or a water blocking yarn, the expansion rate of the water blocking tape is not less than 16mm/min, and the expansion height is not less than 12 mm; the expansion rate of the water-blocking yarn is more than or equal to 70mL/g/min, and the expansion rate is more than or equal to 70 mL/g.
8. A novel reinforced indoor optical cable as claimed in claim 1, wherein the thermoplastic elastomer comprises a thermoplastic polyester elastomer or a low smoke zero halogen material or a thermoplastic polyurethane elastomer.
9. The novel reinforced indoor optical cable of claim 1, wherein the optical fiber is 1-12 core, discrete optical fiber or optical fiber ribbon.
10. A novel reinforced indoor optical cable as claimed in claim 1, wherein the dry water blocking component comprises water blocking yarn or powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023129832.3U CN214225519U (en) | 2020-12-23 | 2020-12-23 | Novel strengthen indoor optical cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023129832.3U CN214225519U (en) | 2020-12-23 | 2020-12-23 | Novel strengthen indoor optical cable |
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| CN214225519U true CN214225519U (en) | 2021-09-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115508963A (en) * | 2022-09-29 | 2022-12-23 | 长飞光纤光缆股份有限公司 | Optical unit with easy-to-peel loose sleeve, preparation method thereof and optical cable |
| CN116560025A (en) * | 2023-07-04 | 2023-08-08 | 西安西古光通信有限公司 | Enhanced optical cable and preparation method thereof |
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2020
- 2020-12-23 CN CN202023129832.3U patent/CN214225519U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115508963A (en) * | 2022-09-29 | 2022-12-23 | 长飞光纤光缆股份有限公司 | Optical unit with easy-to-peel loose sleeve, preparation method thereof and optical cable |
| CN116560025A (en) * | 2023-07-04 | 2023-08-08 | 西安西古光通信有限公司 | Enhanced optical cable and preparation method thereof |
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