CN216901090U - Air-blowing optical cable - Google Patents
Air-blowing optical cable Download PDFInfo
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- CN216901090U CN216901090U CN202221335965.2U CN202221335965U CN216901090U CN 216901090 U CN216901090 U CN 216901090U CN 202221335965 U CN202221335965 U CN 202221335965U CN 216901090 U CN216901090 U CN 216901090U
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Abstract
The utility model relates to the technical field of communication optical cables, aims to solve the problem of low wiring efficiency of an air-blowing optical cable, and provides an air-blowing optical cable which comprises a cable core and an outer sheath. The cable core comprises two reinforcing parts and an optical fiber unit, wherein the two reinforcing parts and the optical fiber unit are distributed in a triangular mode, and the peripheral walls of the adjacent reinforcing parts and/or the optical fiber unit are tangent. The outer sheath covers the peripheral wall of the cable core, the outer surface of the outer sheath is provided with three arc sections which are connected in sequence, wherein two arc sections are formed by outward deviation of part of the outer surfaces of the two reinforcing pieces respectively, and the other arc section is formed by outward deviation of part of the outer surface of the optical fiber unit. The utility model has the beneficial effect of improving the wiring efficiency of the air-blowing optical cable.
Description
Technical Field
The utility model relates to the technical field of communication optical cables, in particular to an air-blowing optical cable.
Background
The last step of leading the optical cable into the room is usually to select the air-blowing optical cable for the access network, which needs to be constructed in the corridor and the wall, and the air-blowing optical cable is easy to generate larger friction with the pipeline during wiring, so that the wiring efficiency of manual wiring or air-blowing wiring is lower.
SUMMERY OF THE UTILITY MODEL
The utility model provides an air-blowing optical cable, which aims to solve the problem of low wiring efficiency of the air-blowing optical cable.
The embodiment of the utility model is realized by the following steps:
an air-blowing optical cable comprises a cable core and an outer sheath. The cable core includes two reinforcements and an optical fiber unit, two the reinforcements with one the optical fiber unit is triangle-shaped distribution, and is adjacent the reinforcements and/or the periphery wall of optical fiber unit is tangent. The outer sheath covers the outer peripheral wall of the cable core, the outer surface of the outer sheath is provided with three arc sections which are connected in sequence, two arc sections are formed by outwards offsetting a part of the outer surfaces of the two reinforcing pieces by a distance, and the other arc section is formed by outwards offsetting a part of the outer surface of the optical fiber unit by the distance.
Because two reinforcers and an optical fiber unit of cable core are triangle-shaped and distribute, the three segmental arcs of oversheath are by two reinforcers and partly outwards squint the same distance h of the surface of optical fiber unit respectively again and form, make to be formed with the depressed part between two adjacent segmental arcs of the surface of oversheath, for the oversheath of circular outer peripheral face, can improve the cross-sectional perimeter of the surface of oversheath, when blowing into the air-blown optical cable through high-pressure gas, can improve the surface of air-blown optical cable and the area of contact of air-blown wind pressure, in order to improve the effort of the air-blown wind pressure that the air-blown optical cable received, improve the air-blown performance of air-blown optical cable, and then improve the wiring efficiency of air-blown optical cable when the air-blown wiring. Simultaneously, under the prerequisite of same radius, the radian of the segmental arc of the oversheath of this embodiment is less than the radian of circular oversheath on same position again, and when the air-blown optical cable of this embodiment was wired in the pipeline, the air-blown optical cable of this embodiment was littleer with the area of contact of pipeline internal surface, and then when realizing the wiring with the frictional force of pipeline littleer to also can further reduce the resistance that the air-blown optical cable received at the wiring in-process, further improve its wiring efficiency.
The cable core includes optical fiber unit and two reinforcements, and two reinforcements can improve the rigidity of cable core, and then improve the rigidity of air-blown optical cable, and the friction between air-blown optical cable and the pipeline is also less for in the less construction occasion of construction length, construction personnel also can directly accomplish the wiring of air-blown optical cable through the hand push mode, thereby improve the manual wiring efficiency of air-blown optical cable.
In addition, the outer sheath covers the cable core, so that the outer sheath can be in close contact with the cable core, and in the long-term use process of the air-blowing optical cable, the close contact can offset the post-shrinkage phenomenon of the outer sheath, so that the problem that the shrinkage causes the reduction of the activity space of the air-blowing optical cable is avoided, the possibility that the transmission performance of the optical fiber unit is negatively affected due to the reduction of the activity space is reduced, and the long-term use stability of the air-blowing optical cable is improved.
In one possible embodiment: the outer diameter of the strength member is the same as that of the optical fiber unit.
In one possible embodiment: the reinforcement comprises a fibre-reinforced composite reinforcement structure.
In one possible embodiment: two the reinforcement with the optical fiber unit encloses into inner space, the air-blowing optical cable still includes the structure that blocks water, the structure that blocks water is located inner space.
In one possible embodiment: the water blocking structure includes: the water blocking yarn is arranged in the inner space; and the water blocking powder is filled in the inner space and wraps the water blocking yarns.
In one possible embodiment: the air-blowing optical cable further comprises a tearing rope, the tearing rope is arranged on the inner side of the outer sheath, and the tearing rope is used for tearing the outer sheath.
In one possible embodiment: the two tearing ropes are respectively positioned on two sides of the cable core.
In one possible embodiment: the optical fiber unit includes: a bundle tube; an optical fiber passing through the bundle tube; a filling structure disposed between an outer wall of the optical fiber and an inner wall of the bundle tube.
In one possible embodiment: the outer jacket is the same thickness throughout.
In one possible embodiment: the air-blowing optical cable further comprises an optical fiber connector, the optical fiber connector is connected with one end of the cable core, and the reinforcing piece extends into the optical fiber connector and is welded with the optical fiber connector.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is one of schematic cross-sectional views of an optical fiber cable according to an embodiment of the present invention;
fig. 2 is a second schematic cross-sectional view of an optical fiber cable according to an embodiment of the present invention.
Description of the main element symbols:
air-blown optical cable 100
Reinforcing element 11
Optical fiber unit 12
The inner space 13
Arc segment 21
Water-blocking structure 30
Water-blocking yarn 31
Water-blocking powder 32
Tear cord 40
The following specific examples will further illustrate the application in conjunction with the above figures.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
Some embodiments of the utility model are described in detail. In the following embodiments, features of the embodiments may be combined with each other without conflict.
Examples
Referring to fig. 1 and 2, the present embodiment provides an air-blown optical cable 100 including a cable core 10 and an outer sheath 20. The cable core 10 comprises two reinforcing members 11 and one optical fiber unit 12, wherein the two reinforcing members 11 and the optical fiber unit 12 are distributed in a triangular shape, and the peripheral walls of the adjacent reinforcing members 11 and/or the optical fiber units 12 are tangent. The outer sheath 20 covers the outer peripheral wall of the cable core 10, and the outer surface of the outer sheath 20 is provided with three arc sections 21 which are sequentially connected, wherein two arc sections 21 are respectively formed by outwards offsetting a part of the outer surfaces of the two reinforcing members 11 by a distance h, and the other arc section 21 is formed by outwards offsetting a part of the outer surface of the optical fiber unit 12 by a distance h.
Because two reinforcements 11 and an optical fiber unit 12 of the cable core 10 are distributed triangularly, and three arc sections 21 of the outer sheath 20 are respectively formed by outwardly offsetting the same distance h from a part of the outer surfaces of the two reinforcements 11 and the optical fiber unit 12, so that a concave part is formed between two adjacent arc sections 21 of the outer surface of the outer sheath 20, compared with the outer sheath 20 with a circular outer peripheral surface, the circumference of the cross section of the outer surface of the outer sheath 20 can be increased, when the air-blown optical cable 100 is blown in by high-pressure gas, the contact area between the outer surface of the air-blown optical cable 100 and air-blowing pressure can be increased, the acting force of the air-blowing pressure on the air-blown optical cable 100 can be increased, the air-blowing performance of the air-blown optical cable 100 can be improved, and the wiring efficiency of the air-blown optical cable 100 during air-blowing wiring can be improved. Meanwhile, in the air-blowing wiring process of the air-blowing optical cable 100 guided by the air pressure piston, the cross-sectional area of the air-blowing optical cable 100 is reduced, so that the area of the air pressure acting force received by the air pressure piston is increased, the acting force received by the air pressure piston is improved, and the air-blowing wiring efficiency of the air-blowing optical cable 100 is improved. In addition, on the premise of the same radius, the radian of the arc section 21 of the outer sheath 20 of the embodiment is smaller than that of the circular outer sheath 20 at the same position, when the air-blown optical cable 100 of the embodiment is wired in a pipeline, the contact area between the air-blown optical cable 100 of the embodiment and the inner surface of the pipeline is smaller, and then the friction force between the air-blown optical cable 100 and the pipeline is smaller during wiring, so that the resistance of the air-blown optical cable 100 in the wiring process can be further reduced, and the wiring efficiency is further improved.
The cable core 10 comprises the optical fiber unit 12 and the two reinforcing members 11, the rigidity of the cable core 10 can be improved by the two reinforcing members 11, the rigidity of the air-blown optical cable 100 is further improved, friction between the air-blown optical cable 100 and a pipeline is small, and therefore in a construction occasion with a small construction length, a constructor can also directly complete wiring of the air-blown optical cable 100 in a hand-pushing mode, and therefore the manual wiring efficiency of the air-blown optical cable 100 is improved.
In addition, since the outer sheath 20 is coated on the cable core 10, the outer sheath 20 can be in close contact with the cable core 10, and in the long-term use process of the air-blowing optical cable 100, the close contact can counteract the post-shrinkage phenomenon of the outer sheath 20, so that the problem that the activity space of the air-blowing optical cable 100 is reduced due to shrinkage is avoided, the possibility that the transmission performance of the optical fiber unit 12 is negatively affected due to the reduction of the activity space is further reduced, and the long-term use stability of the air-blowing optical cable 100 is improved.
Referring to fig. 1, in one embodiment of the present embodiment, the outer diameter of the strength member 11 is the same as the outer diameter of the optical fiber unit 12.
Because the outer diameter of the reinforcing member 11 is the same as that of the optical fiber unit 12, after the two reinforcing members 11 and the optical fiber unit 12 are tangent to each other, three central points of the two reinforcing members are located on three vertexes of an equilateral triangle, so that the cross section of the cable core 10 is of an axisymmetric structure, and the use convenience of the cable core is improved.
Of course, in other embodiments of the present invention, the outer diameters of the reinforcing member 11 and the optical fiber unit 12 may be adjusted according to specific requirements, and need not be limited specifically.
Referring to fig. 1, in one embodiment of the present embodiment, the reinforcement 11 comprises a fiber-reinforced composite reinforcement structure.
The fiber reinforced composite material has high strength and can achieve a good reinforcing effect on the strength of the cable core 10. Specifically, the FRP reinforcing structure of the present embodiment may be glass fiber, carbon fiber, aramid fiber, or the like, and need not be particularly limited.
Referring to fig. 1, in one embodiment of the present embodiment, two strength members 11 and an optical fiber unit 12 enclose an inner space 13, and the air-blowing optical cable 100 further includes a water blocking structure 30, and the water blocking structure 30 is disposed in the inner space 13.
The round-section reinforcing part 11 and the optical fiber unit 12 facilitate the tangency of the reinforcing part 11 and the optical fiber unit 12 in the cable core 10, so as to form an internal space 13 and arrange a water blocking structure 30 therein, so as to achieve a good water blocking effect on the air-blown optical cable 100 and ensure the long-term use quality of the air-blown optical cable.
Specifically, referring to fig. 1, the water blocking structure 30 in the present embodiment includes water blocking yarns 31 and water blocking powder 32. The water blocking yarn 31 is provided in the internal space 13. The water blocking powder 32 is filled in the inner space 13 and wraps the water blocking yarn 31. The water blocking powder 32 can fill and wrap the water blocking yarn 31 to ensure that the water blocking structure 30 is filled in the inner space 13, and further ensure the water blocking effect. Specifically, the water blocking yarns 31 and the water blocking powder 32 can absorb moisture permeating from the two ends of the air-blown optical cable 100, so that the humidity inside the air-blown optical cable 100 is reduced, the dry environment inside the air-blown optical cable 100 is ensured, and the reliability of signal transmission is ensured.
Referring to fig. 1, in one embodiment of the present embodiment, blown fiber cable 100 further includes a ripcord 40, ripcord 40 being disposed inside outer jacket 20, ripcord 40 being used to rip outer jacket 20.
Specifically, the tear string 40 in this embodiment may be cylindrical or flat strip, and the specific shape thereof may be determined according to actual requirements.
Referring to fig. 1, in one embodiment of the present embodiment, two tear lines 40 are provided, and the two tear lines 40 are respectively located at both sides of the cable core 10.
Two ripcords 40 are provided at both sides of the cable core 10, which can facilitate the subsequent use of the ripcords 40 of the air-blown cable 100. Of course, in other embodiments of the present invention, the tearing string 40 may be provided in plural, and need not be limited specifically.
Specifically, two strength members 11 and one optical fiber unit 12 of the present embodiment are formed in an axisymmetric structure, and two tear cords 40 are also simultaneously located on the axisymmetric line of the cable core 10.
Referring to fig. 1, in one embodiment of the present embodiment, the optical fiber unit 12 includes a bundle tube 121, an optical fiber 122, and a filling structure 123. An optical fiber 122 is disposed through the bundle tube 121. A filling structure 123 is provided between the outer wall of the optical fiber 122 and the inner wall of the bundle tube 121.
The filling structure 123 can provide a good protection effect for the optical fiber 122, and the bundle tube 121 can provide a good protection effect for the cooperation between the optical fiber unit 12 and the reinforcing member 11, and can provide a water-blocking or biting-preventing effect for the optical fiber 122 in the optical fiber unit 12.
Specifically, the filling structure 123 of this embodiment may be fiber paste, water blocking fiber paste, or water blocking tape, etc., the bundle tube 121 of this embodiment may be a micro-bundle tube 121 or a PBT bundle tube 121, and the specific structure of the optical fiber unit 12 of this embodiment may also be adjusted according to actual requirements.
It should be noted that the specific number of the optical fibers 122 in this embodiment may be adjusted according to actual needs, and is not particularly limited.
Referring to FIG. 1, in one embodiment of the present embodiment, the thickness is the same throughout the outer jacket 20.
Because the thickness of each part of the outer sheath 20 is the same, the outer wall of the outer sheath 20 is smooth, and the shapes such as a concave shape or a convex shape are not easy to appear, so that the wiring efficiency of the air-blowing optical cable 100 is further ensured.
Referring to fig. 2, in one embodiment of the present embodiment, the air-blown optical cable 100 further includes an optical fiber connector 50, the optical fiber connector 50 is connected to one end of the cable core 10, and the strength member 11 extends into the optical fiber connector 50 and is fusion-spliced to the optical fiber connector 50.
Because one end of the cable core 10 is connected with the optical fiber connector 50, the optical fiber 122 does not need to be welded on site when the air-blown optical cable 100 of the embodiment is constructed on site, and the construction time of the air-blown optical cable 100 is saved; after the reinforcing member 11 is welded to the optical fiber connector 50, the optical fiber connector 50 can be stably connected to the cable core 10 during the construction process, so that the field construction efficiency of the air-blowing optical cable 100 is further improved.
It should be noted that the specific structure of the optical fiber connector 50 may adopt an existing optical fiber connector, and the specific connection structure of the reinforcing member 11 and the optical fiber connector 50 may also adopt a conventional connection structure, which is not described herein again.
The following describes a process of manufacturing the air-blown optical cable 100 according to one embodiment of the present embodiment:
installing the two reinforcing pieces 11 on a pay-off rack, setting the tension to be 12-15N, and pulling the two reinforcing pieces out of the machine head through a dancing wheel for later use;
installing the optical fiber unit 12 on a pay-off rack of a bundle tube 121, setting the tension to be 2-3N, and pulling the optical fiber unit out of a dancing wheel to a nose for later use;
installing the tearing rope 40 and pulling the tearing rope to the machine head for later use;
opening the extruding machine for temperature control, setting the processing temperature at 160-190 ℃, selecting a proper mold according to the process requirements, installing the mold, and adjusting the eccentric cores of the reinforcing piece 11 and the optical fiber unit 12 after the temperature of the extruding machine meets the requirements;
penetrating the reinforcing part 11, the optical fiber unit 12 and the tearing rope 40, pulling the reinforcing part 11, the optical fiber unit 12 and the tearing rope 40 to a take-up stand, keeping a cable core 10 consisting of the reinforcing part 11 and the optical fiber unit 12 in a triangle-like shape, entering the machine head die core, checking the appearance quality of the outer sheath 20, ensuring that the surface of the outer sheath is smooth and has no visible bamboo joint or stripping phenomenon, and checking whether the end face concentricity of the cable core 10 is qualified; when two tear strings 40 are provided, it is checked whether the two tear strings 40 are symmetrical. When the inspection conditions are met, the machine can be used for production, and the inspection conditions are checked and confirmed again after the production is finished; if the requirements are not met, the mold position or the like needs to be adjusted until the blown optical cable 100 at the end of production satisfies the above-described inspection conditions.
And when the appearance size of the air-blown optical cable 100 meets the process requirement, the optical cable can be produced on a disc.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the utility model.
Claims (10)
1. An air-blown optical cable, comprising:
the cable core comprises two reinforcing parts and an optical fiber unit, the two reinforcing parts and the optical fiber unit are distributed in a triangular shape, and the peripheral walls of the adjacent reinforcing parts and/or the optical fiber units are tangent;
the outer sheath covers the peripheral wall of the cable core, the outer surface of the outer sheath is provided with three arc sections which are sequentially connected, two arc sections are formed by outwards offsetting a part of the outer surfaces of the two reinforcing pieces by a distance, and the other arc section is formed by outwards offsetting a part of the outer surface of the optical fiber unit by the distance.
2. The air-blown optical cable of claim 1, wherein: the outer diameter of the strength member is the same as that of the optical fiber unit.
3. The air-blown optical cable of claim 1, wherein: the reinforcement comprises a fibre-reinforced composite reinforcement structure.
4. The air-blown optical cable of claim 1, wherein: two the reinforcement with the optical fiber unit encloses into inner space, the air-blowing optical cable still includes the structure that blocks water, the structure that blocks water is located inner space.
5. The air-blown optical cable of claim 4, wherein: the water blocking structure includes:
the water blocking yarn is arranged in the inner space;
and the water blocking powder is filled in the inner space and wraps the water blocking yarns.
6. The air-blown optical cable of claim 1, wherein: the air-blowing optical cable further comprises a tearing rope, the tearing rope is arranged on the inner side of the outer sheath, and the tearing rope is used for tearing the outer sheath.
7. The air-blown optical cable of claim 6, wherein: the two tearing ropes are respectively positioned on two sides of the cable core.
8. The air-blown optical cable of any one of claims 1-7, wherein: the optical fiber unit includes:
a bundle tube;
an optical fiber passing through the bundle tube;
a filling structure disposed between an outer wall of the optical fiber and an inner wall of the bundle tube.
9. The air-blown optical cable of any one of claims 1-7, wherein: the outer jacket is the same thickness throughout.
10. The air-blown optical cable of any one of claims 1-7, wherein: the air-blowing optical cable further comprises an optical fiber connector, the optical fiber connector is connected with one end of the cable core, and the reinforcing piece extends into the optical fiber connector and is welded with the optical fiber connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221335965.2U CN216901090U (en) | 2022-05-31 | 2022-05-31 | Air-blowing optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221335965.2U CN216901090U (en) | 2022-05-31 | 2022-05-31 | Air-blowing optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216901090U true CN216901090U (en) | 2022-07-05 |
Family
ID=82194138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221335965.2U Active CN216901090U (en) | 2022-05-31 | 2022-05-31 | Air-blowing optical cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216901090U (en) |
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2022
- 2022-05-31 CN CN202221335965.2U patent/CN216901090U/en active Active
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