CN221039558U - Nonmetal optical cable - Google Patents
Nonmetal optical cable Download PDFInfo
- Publication number
- CN221039558U CN221039558U CN202323207990.XU CN202323207990U CN221039558U CN 221039558 U CN221039558 U CN 221039558U CN 202323207990 U CN202323207990 U CN 202323207990U CN 221039558 U CN221039558 U CN 221039558U
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- cladding
- loose
- fiber optic
- loose tubes
- optic cable
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- 230000003287 optical effect Effects 0.000 title claims abstract description 34
- 229910052755 nonmetal Inorganic materials 0.000 title abstract description 18
- 238000005253 cladding Methods 0.000 claims abstract description 46
- 230000002093 peripheral effect Effects 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 17
- 239000013307 optical fiber Substances 0.000 claims description 12
- -1 polybutylene terephthalate Polymers 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 229920003023 plastic Polymers 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 7
- 239000004698 Polyethylene Substances 0.000 claims description 4
- 229910052736 halogen Inorganic materials 0.000 claims description 4
- 150000002367 halogens Chemical class 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 239000000779 smoke Substances 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 239000004760 aramid Substances 0.000 claims description 3
- 229920003235 aromatic polyamide Polymers 0.000 claims description 3
- 239000011152 fibreglass Substances 0.000 claims description 3
- 229920001903 high density polyethylene Polymers 0.000 claims description 3
- 239000004700 high-density polyethylene Substances 0.000 claims description 3
- 229920001684 low density polyethylene Polymers 0.000 claims description 3
- 239000004702 low-density polyethylene Substances 0.000 claims description 3
- 229920001179 medium density polyethylene Polymers 0.000 claims description 3
- 239000004701 medium-density polyethylene Substances 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 239000004677 Nylon Substances 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims description 2
- 229920001778 nylon Polymers 0.000 claims description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 claims description 2
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 2
- 239000004800 polyvinyl chloride Substances 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims 8
- 238000010276 construction Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000007689 inspection Methods 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 abstract description 5
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 229920000728 polyester Polymers 0.000 description 13
- 239000003292 glue Substances 0.000 description 4
- 210000003484 anatomy Anatomy 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 239000002674 ointment Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002224 dissection Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Light Guides In General And Applications Therefor (AREA)
Abstract
The utility model belongs to the technical field of optical cables, and discloses a nonmetal optical cable which is provided with n loose tubes (1), a cladding part (3) and an outer sheath (4), wherein one loose tube is positioned in the center, and the rest loose tubes are symmetrically distributed around the central loose tube; the method is characterized in that: the cladding part (3) is composed of a cladding body (31), n-1 indicating holes (32) which are distributed at intervals and extend in the direction parallel to the central axis of the cladding body are formed in the cladding body, and an inner cavity (33) communicated with the indicating holes is formed in the cladding body; each position indicating hole of the cladding body is adsorbed and clung to the outermost edge of one peripheral loose tube, the cladding body radially seals all cable cores formed by the loose tubes, and n is more than 3 and n is a positive integer. The utility model has the following main beneficial technical effects: simple structure, easy manufacture, more accurate and faster construction/inspection/maintenance, better sealing performance and better water blocking performance.
Description
Technical Field
The utility model belongs to the technical field of optical cables, and particularly relates to a nonmetal optical cable.
Background
The optical cable is used as a carrier for high-speed signal transmission and has extremely wide application. When no metallic material exists in the optical cable, the optical cable is called a nonmetallic optical cable, and the nonmetallic optical cable is light in weight, does not contain metal, can be used in a multi-thunder area, and is also suitable for an electric power system. However, the nonmetallic optical cables in the prior art are generally composed of a central part, a plurality of loose tubes stranded around the central part, polyester binding yarns wrapping the loose tubes, a water-blocking material positioned in the gap, a reinforcing layer and a sheath layer; the polyester binding yarn is spirally coated outside the plurality of loose tubes at a certain pitch, however, because the air temperature is changed and the air temperatures of all places are different, the materials of the polyester binding yarn and the loose tubes are different, and the purpose of the polyester binding yarn binding is to prevent the stranded loose tubes from being scattered, whether in production, inspection, construction or operation; when the cable is laid between telegraph poles or electric towers, the self-supporting type structure is that the cable between poles or between towers is not additionally bound on a follow-up reinforcement, the structure of the cable is required to be more stable, because wind blowing, rain, snow pressure and the like can cause the swinging and twisting of the cable in the air and local repeated bending, polyester yarn binding can cause the extrusion of the polyester yarn binding to the loose tube, the deformation of the loose tube can be caused, even when the temperature change is large, the polyester yarn binding damages the loose tube and even binds the loose tube, the stress or fracture of the optical fiber is caused, the communication is interrupted, and the fault is difficult to repair. On the other hand, during inspection and construction, it is necessary to cut or unwind the polyester binding yarn, then unwind the loose tube, then take out the required loose tube, then peel or open and cut the loose tube, and take out the optical fiber inside for connection. In addition, the polyester binding yarn cannot cover water-blocking objects in the internal gaps, such as water-blocking powder, water-blocking yarn, ointment and the like, and has poor water-blocking performance.
CN112630910a discloses a method for manufacturing water-blocking yarn for submarine optical cable, comprising the following steps: preparing raw materials, preparing a water-blocking solution, a water-blocking glue solution and a coating glue solution; preparing a water-blocking yarn base material; immersing in a water-blocking solution; immersing into water-blocking glue solution; primary scraping; primary drying; immersing the coating glue solution; secondary scraping; and (5) secondary drying. The water-blocking yarn manufactured by the manufacturing method of the water-blocking yarn for the submarine optical cable has the advantages of high water-blocking sealing performance, high water absorption speed, high expansion rate, strong tensile force, no compatibility influence on the cable, heat resistance, chemical stability, no corrosiveness and the like, and materials such as filling ointment, water-blocking tape, yarn binding and the like can be omitted in the manufacturing process of the optical cable; the water-blocking yarn is convenient to use, simple in process, stable in structure, reliable in water blocking, clean in environment, free of oily pollution and mainly suitable for binding cable cores of waterproof communication cables and dry optical cables.
The above disclosed technique cannot solve the problems existing in the prior art.
Disclosure of utility model
In order to solve the problems, the utility model aims to disclose a nonmetal optical cable, which is realized by adopting the following technical scheme.
The nonmetallic optical cable comprises n loose tubes, a cladding part and an outer sheath, wherein the loose tubes are composed of a tube body and optical fibers positioned in the tube body, one loose tube is positioned in the center, the other loose tubes are symmetrically distributed around the central loose tube, the cladding part is clad outside the other loose tubes, the other loose tubes are called peripheral loose tubes, and the outer sheath is clad outside the cladding part; the method is characterized in that: the cladding part consists of a cladding body, n-1 indicating holes which are distributed at intervals and extend in the direction parallel to the central axis of the cladding body are formed in the cladding body, a hollow inner cavity is formed in the cladding body, and the indicating holes are communicated with the inner cavity; each position indicating hole of the cladding body is adsorbed and clung to the outermost edge of one peripheral loose tube, the cladding body radially seals all cable cores formed by the loose tubes, and n is more than 3 and n is a positive integer.
The nonmetal optical cable is characterized in that: the loose tube in the center is replaced by a reinforcing component which consists of a center reinforcing piece and a cushion layer coated outside the center reinforcing piece.
Further, the nonmetal optical cable is characterized in that: the reinforcing member is constituted only by the center reinforcing member.
The nonmetal optical cable is characterized in that: a reinforcing layer is also arranged between the cladding component and the outer sheath.
The application has the following main beneficial technical effects: simple structure, easy manufacture, more accurate and faster construction/inspection/maintenance, better sealing performance and better water blocking performance.
Drawings
Fig. 1 is a schematic perspective view of a section of anatomy of example 1.
Fig. 2 is an enlarged schematic cross-sectional structure of fig. 1.
Fig. 3 is a schematic perspective view of a section of the wrapping member used in fig. 1 after dissection.
Fig. 4 is an enlarged schematic view of the front view of fig. 3.
Fig. 5 is an enlarged schematic top view of fig. 3.
Fig. 6 is a schematic perspective view of a section of anatomy of example 2.
Fig. 7 is an enlarged schematic cross-sectional structure of fig. 2.
Fig. 8 is a schematic cross-sectional structure of embodiment example 3.
Fig. 9 is a schematic perspective view of a section of anatomy of example 4.
Fig. 10 is an enlarged schematic cross-sectional structure of fig. 4.
Detailed Description
So that those skilled in the art can better understand and practice the present patent, reference will now be made in detail to the drawings, which are illustrated in the accompanying drawings.
In the figure: 1-loose tube, 2-reinforcing part, 3-cladding part, 4-outer sheath, 5-reinforcing layer, 11-sleeve body, 12-optical fiber, 21-central reinforcing part, 22-cushion layer, 31-cladding body, 32-position indicating hole and 33-inner cavity.
Implementation example 1: referring to fig. 1 to 5, a nonmetallic optical cable is disclosed, which comprises n loose tubes 1, a cladding component 3 and an outer sheath 4, wherein the loose tubes 1 are composed of a tube body 11 and optical fibers 12 positioned in the tube body 11, one loose tube 1 is positioned in the center, the rest of loose tubes 1 are symmetrically distributed around the central loose tube 1, the cladding component 3 is clad outside the rest of loose tubes 1, the rest of loose tubes 1 are called peripheral loose tubes, and the outer sheath 4 is clad outside the cladding component 3; the method is characterized in that: the cladding part 3 is composed of a cladding body 31, n-1 indicating holes 32 which are distributed at intervals and extend in the direction parallel to the central axis of the cladding body 31 are formed in the cladding body 31, a hollow inner cavity 33 is formed in the cladding body 31, and the indicating holes 32 are communicated with the inner cavity 33; each position indicating hole 32 of the coating body 31 is adsorbed and clung to the outermost edge of one peripheral loose tube, the coating body 31 radially seals the cable core formed by all the loose tubes, and n is more than 3 and n is a positive integer.
In fig. 1 and 2, n is 7; in practice, the whole number of the peripheral loose tube is not less than 3; as long as the tangent with the loose tube in the middle is ensured and a complete structure distributed in circumference is formed; the diameter of all peripheral loose tubes is the same size; to ensure that adjacent peripheral loose tubes are also tangential and tangential to the central loose tube, the diameter of the central loose tube may vary with the number of peripheral loose tubes.
In this embodiment, a portion of the peripheral loose tube may be replaced by a filling cord, the filling strength being an elongated cylindrical structure as large as the diameter of the loose tube.
Implementation example 2: please refer to fig. 6 to 7, and refer to fig. 1 to 5, a nonmetal optical cable is basically the same as embodiment 1, except that: the central loose tube 1 is replaced by a reinforcing member 2, and the reinforcing member 2 is composed of a central reinforcing member 21 and a cushion layer 22 covering the central reinforcing member.
Implementation example 3: please refer to fig. 8, and refer to fig. 1 to 7, a nonmetal optical cable is basically the same as embodiment 3, except that: the reinforcing member 2 is constituted only by a central reinforcing member.
Implementation example 4: please refer to fig. 9 to 10, and refer to fig. 1 to 8, a nonmetal optical cable is basically the same as any of the above embodiments, except that: there is also a reinforcing layer 5 between the cladding member 3 and the outer sheath 4.
The nonmetal optical cable disclosed by the application is characterized in that: the material of the sleeve body 11 is polybutylene terephthalate or polypropylene or other plastics.
The nonmetal optical cable disclosed by the application is characterized in that: the type of the optical fiber 12 is g.652 or g.653 or g.654 or g.655 or g.656 or g.657 or A1a or A1b or A1c or A1d.
The nonmetal optical cable disclosed by the application is characterized in that: the material of the central reinforcement 21 is glass fiber reinforced plastic or aramid yarn or glass fiber yarn.
The nonmetal optical cable disclosed by the application is characterized in that: the material of the cushion layer 22 is plastic, preferably low density polyethylene or medium density polyethylene or high density polyethylene or polypropylene or foamable plastic.
The nonmetal optical cable disclosed by the application is characterized in that: the material of the cover 31 is plastic, preferably polyester plastic.
The nonmetal optical cable disclosed by the application is characterized in that: the material of the outer sheath 4 is plastic, preferably low density polyethylene or medium density polyethylene or high density polyethylene or low smoke zero halogen polyethylene or low smoke low halogen polyethylene or polyvinyl chloride or nylon.
The nonmetal optical cable disclosed by the application is characterized in that: the material of the reinforcing layer 5 is glass fiber reinforced plastic or aramid yarn which is spirally coated outside the coating member 3.
In the application, all the component parts are made of nonmetallic materials, so the application is of an all-medium structure, and the central loose tube, the reinforcing part, the reinforcing layer and the like can have stronger tensile resistance; the self-supporting type cable laying device can be suitable for self-supporting application in different occasions, such as a structure with a central loose tube, a structure with a reinforcing part and a structure with a medium span, a structure with a reinforcing layer and a structure with a large span, and can be suitable for self-supporting laying in a small span; of course, the added layers can be multi-layered, and the winding directions of adjacent layers are opposite, so that the tensile resistance can be further improved, and the self-supporting laying method is suitable for the occasion with larger span.
The coating 31 in the present application may also be a polyester tape.
In the application, all gaps inside the cladding component 3 can be filled with water-blocking materials, and the water-blocking materials can be ointment, water-blocking powder or water-blocking yarns; the cladding body 31 of the cladding component 3 is positioned at the outermost edge of the peripheral loose tube, namely, on one hand, the peripheral loose tube is sealed, so that water, gas and the like cannot permeate into the interior, and the effects of water resistance and gas resistance are achieved; in fact, during production, the cladding part 3 is sleeved outside the peripheral loose tube, when the cladding part is pulled forwards together, ultrasonic heating or other proper heating modes are adopted, and meanwhile, the internal vacuum or the approximate vacuum is generated by pumping air at the feeding end, so that the position indicating hole 32 is closely attached to the outermost edge of the peripheral loose tube and fused together through thermal bonding as long as the cladding body 31 is aligned to the outermost edge of the peripheral loose tube, and a closed structure is formed; on the other hand, since the peripheral loose tubes generally have different colors, the color of the peripheral loose tubes can be displayed conveniently and intuitively at the position indicating holes 32 even if the cover body 31 is made of transparent materials and is not transparent, so that the required loose tubes can be found conveniently; in addition, as the needed loose tube is found, the corresponding loose tube is cut down along the position indicating hole 32, the internal optical fiber can be taken out, all the coating bodies 31 are not required to be removed, and the optical fiber in the loose tube is taken out without influencing the sealing of the structure, so that the optical fiber in other loose tubes is not influenced, and the detection, maintenance, construction and the like are more accurate and quicker; the structure of the application effectively avoids the inconvenient maintenance phenomena of optical communication interruption and the like caused by the heat shrinkage of the loose tube by adopting the polyester yarn-binding covered loose tube in the prior art, and simultaneously is very easy to recover after construction, and the optical fibers in the loose tube which do not need construction/inspection are influenced by the need of untwisting, twisting and breaking a section of polyester yarn-binding in the prior art during construction/inspection.
The application has the following main beneficial technical effects: simple structure, easy manufacture, more accurate and faster construction/inspection/maintenance, better sealing performance and better water blocking performance.
The above-described embodiments are only preferred embodiments of the present utility model, and should not be construed as limiting the present utility model. The protection scope of the present utility model is defined by the claims, and the protection scope includes equivalent alternatives to the technical features of the claims. I.e., equivalent replacement modifications within the scope of this utility model are also within the scope of the utility model.
Claims (9)
1. The nonmetallic optical cable comprises n loose tubes (1), a cladding part (3) and an outer sheath (4), wherein the loose tubes (1) are composed of a tube body (11) and optical fibers (12) positioned in the tube body (11), one loose tube (1) is positioned in the center, the rest loose tubes (1) are symmetrically distributed around the central one loose tube (1), the cladding part (3) is clad outside the rest loose tubes (1), the rest loose tubes (1) are called peripheral loose tubes, and the outer sheath (4) is clad outside the cladding part (3); the method is characterized in that: the cladding component (3) is composed of a cladding body (31), n-1 indicating holes (32) which are distributed at intervals and extend in the direction parallel to the central axis of the cladding body (31) are formed in the cladding body (31), a hollow inner cavity (33) is formed in the cladding body (31), and the indicating holes (32) are communicated with the inner cavity (33); each position indicating hole (32) of the coating body (31) is adsorbed and clung to the outermost edge of one peripheral loose tube, the coating body (31) radially seals the cable core formed by all the loose tubes, and n is more than 3 and n is a positive integer.
2. A nonmetallic fiber optic cable according to claim 1, wherein: the loose tube (1) in the center is replaced by a reinforcing component (2), and the reinforcing component (2) is composed of a center reinforcing piece (21) and a cushion layer (22) coated outside the center reinforcing piece.
3. A nonmetallic fiber optic cable according to claim 2, wherein: the reinforcing member (2) is constituted by only the center reinforcing member.
4. A nonmetallic fiber optic cable according to claim 2, wherein: the material of the central reinforcement (21) is glass fiber reinforced plastic or aramid yarn or glass fiber yarn.
5. A nonmetallic fiber optic cable according to claim 2, wherein: a reinforcing layer (5) is arranged between the cladding component (3) and the outer sheath (4).
6. A nonmetallic fiber optic cable according to claim 2, wherein: the material of the sleeve body (11) is polybutylene terephthalate or polypropylene.
7. A nonmetallic fiber optic cable according to claim 2, wherein: the type of the optical fiber (12) is G.652 or G.653 or G.654 or G.655 or G.656 or G.657 or A1a or A1b or A1c or A1d.
8. A nonmetallic fiber optic cable according to claim 2, wherein: the material of the cladding (31) is plastic.
9. A nonmetallic fiber optic cable according to claim 2, wherein: the material of the outer sheath (4) is low density polyethylene or medium density polyethylene or high density polyethylene or low smoke zero halogen polyethylene or low smoke low halogen polyethylene or polyvinyl chloride or nylon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323207990.XU CN221039558U (en) | 2023-11-28 | 2023-11-28 | Nonmetal optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323207990.XU CN221039558U (en) | 2023-11-28 | 2023-11-28 | Nonmetal optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221039558U true CN221039558U (en) | 2024-05-28 |
Family
ID=91178463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323207990.XU Active CN221039558U (en) | 2023-11-28 | 2023-11-28 | Nonmetal optical cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221039558U (en) |
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2023
- 2023-11-28 CN CN202323207990.XU patent/CN221039558U/en active Active
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| GR01 | Patent grant |