CN212229276U - Special-shaped optical cable - Google Patents
Special-shaped optical cable Download PDFInfo
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- CN212229276U CN212229276U CN202021251436.5U CN202021251436U CN212229276U CN 212229276 U CN212229276 U CN 212229276U CN 202021251436 U CN202021251436 U CN 202021251436U CN 212229276 U CN212229276 U CN 212229276U
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- sheath
- circular ring
- optical fiber
- low
- optical cable
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- 230000003287 optical effect Effects 0.000 title claims abstract description 40
- 239000004698 Polyethylene Substances 0.000 claims abstract description 38
- 229920000573 polyethylene Polymers 0.000 claims abstract description 30
- 239000013307 optical fiber Substances 0.000 claims abstract description 29
- 239000000779 smoke Substances 0.000 claims abstract description 23
- 229910052755 nonmetal Inorganic materials 0.000 claims abstract description 16
- -1 polyethylene Polymers 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- 229920003023 plastic Polymers 0.000 claims abstract description 11
- 239000004033 plastic Substances 0.000 claims abstract description 11
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229920006231 aramid fiber Polymers 0.000 claims description 15
- 239000010410 layer Substances 0.000 claims description 13
- 229910052736 halogen Inorganic materials 0.000 claims description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 239000011241 protective layer Substances 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 5
- 239000011247 coating layer Substances 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 4
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 abstract description 3
- 238000005452 bending Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 3
- 239000003063 flame retardant Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
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- 238000007906 compression Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 241001465754 Metazoa Species 0.000 description 3
- 150000002367 halogens Chemical class 0.000 description 3
- 230000002940 repellent Effects 0.000 description 3
- 239000005871 repellent Substances 0.000 description 3
- 241000256602 Isoptera Species 0.000 description 2
- VQXSOUPNOZTNAI-UHFFFAOYSA-N Pyrethrin I Natural products CC(=CC1CC1C(=O)OC2CC(=O)C(=C2C)CC=C/C=C)C VQXSOUPNOZTNAI-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
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- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- HYJYGLGUBUDSLJ-UHFFFAOYSA-N pyrethrin Natural products CCC(=O)OC1CC(=C)C2CC3OC3(C)C2C2OC(=O)C(=C)C12 HYJYGLGUBUDSLJ-UHFFFAOYSA-N 0.000 description 2
- VJFUPGQZSXIULQ-XIGJTORUSA-N pyrethrin II Chemical compound CC1(C)[C@H](/C=C(\C)C(=O)OC)[C@H]1C(=O)O[C@@H]1C(C)=C(C\C=C/C=C)C(=O)C1 VJFUPGQZSXIULQ-XIGJTORUSA-N 0.000 description 2
- 241000238631 Hexapoda Species 0.000 description 1
- 208000002193 Pain Diseases 0.000 description 1
- 241000700159 Rattus Species 0.000 description 1
- 241000283984 Rodentia Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000035929 gnawing Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 239000012209 synthetic fiber Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a special-shaped optical cable, which comprises an optical fiber, a non-metal reinforced core, a low-smoke halogen-free sheath, a water-blocking layer, a plastic-coated aluminum tape, a polyethylene outer sheath and a PE sheath, wherein the low-smoke halogen-free sheath is in a butterfly shape, the optical fiber is arranged in the middle of the butterfly shape, and the non-metal reinforced core is respectively arranged at two sides of the optical fiber; the water-blocking layer, the plastic-coated aluminum belt, the polyethylene outer sheath and the PE sheath are sequentially arranged outside the butterfly shape, and the PE sheath is formed by connecting a large circular ring, a small circular ring and a transverse strip connecting piece for connecting the large circular ring and the small circular ring; and a steel strand is arranged in the small circular ring. The beneficial effects of the utility model reside in that: the special-shaped optical cable of the utility model has bending resistance, good compression resistance and optical fiber protection; the whole optical cable is simple in structure, light in weight and strong in practicability; the novel cable is provided with a unique concave groove design, is easy to peel, is convenient to connect and simplifies installation and maintenance; the low-smoke halogen-free flame-retardant sheath is adopted, so that the environment is protected.
Description
Technical Field
The utility model belongs to the technical field of the optical cable, especially, relate to a butterfly-shaped optical cable.
Background
At present, butterfly-shaped optical cables are generally adopted as optical cables applied to subscriber drop sections in fiber-to-the-home networks.
The center of the butterfly-shaped optical cable is used as an optical fiber of an optical communication unit, the two sides of the optical fiber are respectively provided with a reinforced core for protecting the optical fiber, the outer sides of the optical fiber and the reinforced core are wrapped with a sheath, and the sheath is flat in appearance and convenient to lay indoors. At present, the sheath of the butterfly-shaped optical cable is thin, the protection performance of the butterfly-shaped optical cable to optical fibers is extremely poor, and the situation that the optical fibers are exposed due to self tearing caused by stress easily occurs in the installation process.
Therefore, how to solve the above-mentioned drawbacks of the prior art becomes the direction of efforts of those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a heterotypic optical cable can solve above-mentioned prior art's weak point completely.
The purpose of the utility model is realized through the following technical scheme: a special-shaped optical cable comprises an optical fiber, a non-metal reinforced core, a low-smoke halogen-free sheath, a water-blocking layer, a plastic-coated aluminum tape, a polyethylene outer sheath and a PE sheath, wherein the low-smoke halogen-free sheath is in a butterfly shape, the optical fiber is arranged in the middle of the butterfly shape, and the non-metal reinforced core is respectively arranged on two sides of the optical fiber; the water-blocking layer, the plastic-coated aluminum belt, the polyethylene outer sheath and the PE sheath are sequentially arranged outside the butterfly shape, and the PE sheath is formed by connecting a large circular ring, a small circular ring and a transverse strip connecting piece for connecting the large circular ring and the small circular ring; and a steel strand is arranged in the small circular ring.
Preferably, the PE sheath is integrally formed, and the length of the horizontal bar connecting member is between the outer diameter of the small ring and the outer diameter of the large ring.
Preferably, the non-metal reinforcement core is a glass fiber FRP central reinforcement.
As one of the preferable modes, the low-smoke zero-halogen sheath is provided with a concave groove, the structure of the concave groove is V-shaped, and the wall thickness of the concave groove is smaller than that of the rest parts of the low-smoke zero-halogen sheath.
As one preferable mode, the low-smoke zero-halogen sheath is of an oval structure, and the non-metal reinforcing core is arranged in the long diameter direction of the oval.
Preferably, the outer polyethylene sheath is covered with an aramid fiber winding covering layer.
Compared with the prior art, the one deck insect-attack prevention protective layer that coats on the PE sheath, the beneficial effects of the utility model reside in that: the special-shaped optical cable of the utility model has bending resistance, good compression resistance and optical fiber protection; the whole optical cable is simple in structure, light in weight and strong in practicability; the novel cable is provided with a unique concave groove design, is easy to peel, is convenient to connect and simplifies installation and maintenance; the low-smoke halogen-free flame-retardant sheath is adopted, so that the environment is protected.
Drawings
Fig. 1 is a schematic structural diagram of the special-shaped optical cable of the present invention.
FIG. 2 is a schematic structural diagram of a low smoke zero halogen sheath.
Fig. 3 is a schematic structural view of a PE sheath.
In the drawings: the optical fiber cable comprises an optical fiber 1, a nonmetal reinforcing core 2, a low-smoke halogen-free sheath 3, a water-blocking layer 4, a plastic-coated aluminum tape 5, a polyethylene outer sheath 6, a PE sheath 7, a steel strand 8, a cable-opening rope 9 and a concave groove 10.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1-3, a special-shaped optical cable includes an optical fiber 1, a non-metal reinforced core 2, a low-smoke halogen-free sheath 3, a water-blocking layer 4, a plastic-coated aluminum tape 5, a polyethylene outer sheath 6, and a PE sheath 7. The non-metal reinforced core adopts a glass fiber FRP central reinforcement. The low-smoke halogen-free sheath 3 is butterfly-shaped, the optical fiber 1 is arranged in the middle of the butterfly-shaped sheath, and the nonmetal reinforcing cores 2 are respectively arranged at two sides of the optical fiber 1; specifically, in this embodiment, the low smoke zero halogen sheath 3 is provided with a concave groove 10, the structure of the concave groove 10 is "V" shaped, and the wall thickness of the concave groove 10 is smaller than the wall thickness of the rest parts of the low smoke zero halogen sheath 3. The low-smoke zero-halogen sheath 3 is of an oval structure, and the nonmetal reinforcing core 2 is arranged in the oval long diameter direction. The water-resistant layer 4, the plastic-coated aluminum strip 5, the polyethylene outer sheath 6 and the PE sheath 7 are sequentially arranged outside the butterfly shape. The polyethylene outer sheath 6 is externally coated with a aramid fiber winding coating layer 11.
Wherein:
the aramid fiber of the aramid fiber winding coating layer is made of waterproof aramid fiber, so that the waterproof performance can be further improved. The aramid fiber is an artificial synthetic fiber, has the excellent performances of ultrahigh strength, high modulus, high temperature resistance, acid and alkali resistance, light weight and the like, the strength of the aramid fiber is 5-6 times that of a steel wire, the modulus of the aramid fiber is 2-3 times that of the steel wire or glass fiber, the toughness of the aramid fiber is 2 times that of the steel wire, and the weight of the aramid fiber is only about 1/5 times that of the steel wire; the material does not decompose or melt at the temperature of 560 ℃. The aramid fiber has good insulativity and ageing resistance, and has a long life cycle; therefore, the performance of the novel optical cable can be effectively improved.
The aramid fiber winding coating layer has the main function of providing axial tensile strength for the novel optical cable. In the embodiment, aramid fibers are controlled by a wrapping machine in a linkage manner, and the wrapping pitch is controlled to be 800-1000 mm; the aramid fiber in the novel optical cable is wound in the forward and reverse directions by adopting a stranding cage.
The PE sheath 7 is formed by connecting a large circular ring 73, a small circular ring 71 and a transverse strip connecting piece 72 for connecting the large circular ring and the small circular ring; inside the small circular ring 71, steel strands 8 are arranged. The PE sheath 7 is integrally formed, and the length of the transverse strip connecting piece 72 is between the outer diameter of the small ring and the outer diameter of the large ring. The length of the cross-bar connection in the PE sheath 7 is chosen such that it can be adapted to different environmental requirements, and the PE sheath can have a bend resistance, thus serving to protect the optical fibers.
In addition, a layer of insect-proof protective layer is coated on the PE jacket, the insect-proof protective layer is arranged at the outermost part and plays a role of a protective layer, the insect-proof protective layer is formed by mixing and soaking a repellent and a pyrethrin solution, and in the embodiment, the pyrethrin solution with the mass percentage of 4% -5% is adopted. When the cable is bitten by termites or rats and insects, the termite-proof solution seeps out to form a termite-proof layer; effectively prevent the penetration of the termites or the rodents. The repellent can be spicy and tasting etc. like this when the animal is close to novel optical cable, or gnaws when stinging novel optical cable, the smell or the taste that the repellent released let the animal feel uncomfortable to keep away from the utility model discloses an optical cable, and then prevent that the animal from gnawing novel optical cable, so can further strengthen the protective capacities of novel optical cable.
When the optical fiber is manufactured, 250 mu m optical fiber is sleeved into a loose tube made of high modulus material, and waterproof compound is filled in the loose tube. The center of the optical fiber is a metal reinforced core, and for optical cables with certain core numbers, a layer of Polyethylene (PE) needs to be extruded outside the metal reinforced core. The loose sleeve and the filling rope are twisted around the central reinforced core to form a compact and round cable core, a gap in the cable core is filled with a water-blocking filler to form a water-blocking layer, a polyethylene inner sheath is extruded after a plastic-coated aluminum tape (APL) is longitudinally wrapped, and a PE sheath is extruded to form a cable after a double-sided plastic-coated steel tape (PSP) is longitudinally wrapped.
The technical parameters of the butterfly-shaped optical cable are as follows:
number of optical fiber cores: 2-144 cores;
outer diameter of optical fiber: 4.1-5 of suspension wire; cable diameter: 7.2-13.0;
tensile force allowed: the temporary flattening force is less than or equal to 3000N; the long-term flattening force is less than or equal to 1000;
minimum bend radius: the dynamic state is complete: 20 times the outer diameter of the optical cable;
complete in static state: 10 times the outer diameter of the cable.
Working temperature range: -40 to 60 ℃.
The optical communication unit is positioned at the center, two parallel non-metal reinforcing elements (FRP) are arranged at two sides to form 2 steel wires, and a black or color low-smoke halogen-free sheath is extruded to form a cable.
The butterfly-shaped optical cable in the embodiment has the following characteristics:
1. the optical cable is bending-resistant, so that a larger bandwidth can be provided, and the network transmission characteristic is enhanced;
2. the parallel FRP leads the optical cable to have good pressure resistance and protects the optical cable;
3. the optical cable has simple structure, light weight and strong practicability;
4. the unique groove design is easy to peel off, convenient to connect and simple to install and maintain;
5. the low-smoke halogen-free flame-retardant sheath is environment-friendly.
The 2-core rubber-insulated optical cable can be divided into a self-supporting optical cable with a steel core structure and a 2-core rubber-insulated optical cable without a steel core according to different application occasions.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. A special-shaped optical cable is characterized in that: the optical fiber cable comprises an optical fiber, a nonmetal reinforcing core, a low-smoke halogen-free sheath, a water-blocking layer, a plastic-coated aluminum tape, a polyethylene outer sheath and a PE sheath, wherein the low-smoke halogen-free sheath is in a butterfly shape, the optical fiber is arranged in the middle of the butterfly shape, and the nonmetal reinforcing core is respectively arranged on two sides of the optical fiber; the water-blocking layer, the plastic-coated aluminum belt, the polyethylene outer sheath and the PE sheath are sequentially arranged outside the butterfly shape, and the PE sheath is formed by connecting a large circular ring, a small circular ring and a transverse strip connecting piece for connecting the large circular ring and the small circular ring; and a steel strand is arranged in the small circular ring.
2. A profile cable according to claim 1, wherein: the PE sheath is integrally formed, and the length of the transverse strip connecting piece is between the outer diameter of the small ring and the outer diameter of the large ring.
3. A profile cable according to claim 2, wherein: and a layer of insect-proof protective layer is coated on the PE sheath.
4. A profile cable according to claim 1, wherein: the non-metal reinforced core adopts a glass fiber FRP central reinforcement.
5. A profile cable according to claim 1, wherein: the low-smoke zero-halogen sheath is provided with a concave groove, the structure of the concave groove is V-shaped, and the wall thickness of the concave groove is smaller than that of the rest parts of the low-smoke zero-halogen sheath.
6. The profile cable according to claim 5, wherein: the low-smoke zero-halogen sheath is of an oval structure, and the nonmetal reinforcing core is arranged in the oval long diameter direction.
7. A profile cable according to claim 1, wherein: the outer part of the polyethylene outer sheath is coated with a aramid fiber winding coating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021251436.5U CN212229276U (en) | 2020-07-01 | 2020-07-01 | Special-shaped optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021251436.5U CN212229276U (en) | 2020-07-01 | 2020-07-01 | Special-shaped optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212229276U true CN212229276U (en) | 2020-12-25 |
Family
ID=73911306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021251436.5U Expired - Fee Related CN212229276U (en) | 2020-07-01 | 2020-07-01 | Special-shaped optical cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212229276U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113823450A (en) * | 2021-01-12 | 2021-12-21 | 马志辉 | Power cable, photoelectric composite cable and optical cable |
-
2020
- 2020-07-01 CN CN202021251436.5U patent/CN212229276U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113823450A (en) * | 2021-01-12 | 2021-12-21 | 马志辉 | Power cable, photoelectric composite cable and optical cable |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201225 |