CN115327720A - Splayed self-supporting optical cable - Google Patents
Splayed self-supporting optical cable Download PDFInfo
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- CN115327720A CN115327720A CN202211032937.8A CN202211032937A CN115327720A CN 115327720 A CN115327720 A CN 115327720A CN 202211032937 A CN202211032937 A CN 202211032937A CN 115327720 A CN115327720 A CN 115327720A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
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Abstract
The invention belongs to the field of optical cables, and particularly relates to a splayed self-supporting optical cable. It includes: an upper monomer, a lower monomer and a linker; the upper single body is provided with a wire cavity along the axial direction of the optical cable, and a self-supporting wire body is arranged in the wire cavity; the lower monomer is composed of two sub-monomer structures of a first arc-shaped body and a second arc-shaped body which are arranged up and down, the two sides of the two sub-monomer structures are connected through arc-shaped ribs, the first arc-shaped body, the second arc-shaped body and the arc-shaped ribs surround the middle part of the lower monomer to form a wire cavity, and a core wire is arranged in the wire cavity; the arc ribs are arranged between the first arc body and the second arc body along the axial direction of the optical cable, and rib grooves are formed between the adjacent arc ribs; and an optical fiber wire is arranged in the core wire. The splayed self-supporting optical cable has good structural stability, and simultaneously, the structures realize the utilization of wind power directly through cooperative cooperation, so that the vibration swing amplitude of the lower single body under the action of wind power is reduced, and the wind resistance effect of the whole optical cable is enhanced.
Description
Technical Field
The invention belongs to the field of optical cables, and particularly relates to a splayed self-supporting optical cable.
Background
The self-supporting optical cable is a special optical cable, is different from a conventional round optical cable, is lower in erection difficulty and higher in actual self-supporting capacity, and is widely used in areas with high erection difficulty.
The existing self-supporting optical cable basically adopts a splayed structure and comprises an upper single body, a lower single body and a connecting body, wherein a self-supporting line body is arranged in the upper single body, and an optical fiber line is arranged in the lower single body.
However, after the existing splayed self-supporting optical cable is arranged in a strong wind area, the swing amplitude of the lower unit is large, so that the self-supporting wire body in the upper unit is stressed greatly, and the problems of breakage, even breakage of an optical fiber wire, signal interruption and the like in the lower unit are easily caused. The problem occurs sometimes when the wind power is applied to environments with rich wind power resources, such as part of northwest regions and coastal regions in China.
Therefore, the problem of wind resistance of the self-supporting optical cable is urgently solved.
Disclosure of Invention
The invention provides a splayed self-supporting optical cable, aiming at solving the problems that the existing self-supporting optical cable has poor wind resistance, and the self-supporting wire body is easy to break or even break under the action of strong wind power.
The invention aims to:
1. the wind resistance of the optical cable is improved;
2. and the integral optical cable is ensured to have good structural stability.
In order to achieve the purpose, the invention adopts the following technical scheme.
A splayed self-supporting optical cable comprising:
the device comprises an upper monomer, a lower monomer and a connector for connecting the upper monomer and the lower monomer;
the upper single body is provided with a wire cavity along the axial direction of the optical cable, and a self-supporting wire body is arranged in the wire cavity;
the lower monomer is composed of two sub-monomer structures of a first arc-shaped body and a second arc-shaped body which are arranged up and down, the two sides of the two sub-monomer structures are connected through arc-shaped ribs, the first arc-shaped body, the second arc-shaped body and the arc-shaped ribs surround the middle part of the lower monomer to form a wire cavity, and a core wire is arranged in the wire cavity;
the arc ribs are arranged between the first arc body and the second arc body at intervals in order along the axial direction of the optical cable, and rib grooves are formed between the adjacent arc ribs;
and an optical fiber wire is arranged in the core wire.
As a preference, the first and second liquid crystal compositions are,
the lower single body is a circular body with notches on two sides on the radial cross section of the optical cable, and the wire cavity is arranged at the center of a circle.
As a preference, the first and second liquid crystal compositions are,
the outer diameter of the core wire is smaller than the inner diameter of the core cavity.
As a preference, the first and second liquid crystal compositions are,
the difference between the outer diameter of the core wire and the inner diameter of the core cavity is controlled to be 1-3 mm.
As a preference, the first and second liquid crystal compositions are,
the core wire comprises a sheath layer, and a central cavity is arranged in the sheath layer;
an inner beam tube with an elliptical radial section is arranged in the central cavity;
the optical fiber line is arranged in the inner beam tube.
As a preference, the first and second liquid crystal compositions are,
the two ends of the inner beam tube in the long axis direction are vertically upward and downward, the optical fiber line is arranged at the lower end of the inner beam tube in the long axis direction and is tangent to the inner wall of the inner beam tube, and the upper end of the optical fiber line is provided with a hollow elastic tube.
As a preference, the first and second liquid crystal compositions are,
and the outer sides of the two ends of the inner beam tube in the short shaft direction are provided with reinforcing parts, and the reinforcing parts are arranged along the axial direction of the optical cable and are respectively tangent to the outer wall of the inner beam tube and the inner wall of the central cavity.
As a preference, the first and second liquid crystal compositions are,
the optical fiber line is an optical fiber bundle formed by a single optical fiber or a plurality of optical fibers.
The invention has the beneficial effects that:
the splayed self-supporting optical cable has good structural stability, and simultaneously, the structures realize the utilization of wind power directly through cooperative cooperation, so that the vibration swing amplitude of the lower single body under the action of wind power is reduced, and the wind resistance effect of the whole optical cable is enhanced.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 is a schematic view of the optical cable of the present invention being subjected to a wind to form a negative pressure region;
FIG. 4 is a schematic view of the core wire of the optical cable of the present invention being stressed in dynamic equilibrium;
FIG. 5 is a schematic view of the core wire of the optical cable of the present invention twisted by a wind;
FIG. 6 is a schematic view of a wind tunnel test simulation;
in the figure: 100 upper single body, 101 self-supporting body, 200 lower single body, 201 first arc body, 202 second arc body, 203 side groove, 204 arc rib, 2041 rib groove, 205 core cavity, 300 connecting body, 400 core wire, 401 sheath layer, 402 central cavity, 403 inner beam tube, 404 optical fiber wire, 405 elastic tube and 406 reinforcing member.
Detailed Description
The invention is described in further detail below with reference to specific embodiments and the attached drawing figures. Those skilled in the art will be able to implement the invention based on these teachings. Moreover, the embodiments of the present invention described in the following description are generally only some embodiments of the present invention, and not all embodiments. Therefore, all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., and "several" means one or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Unless otherwise specified, all the raw materials used in the examples of the present invention are commercially available or available to those skilled in the art; unless otherwise specified, the methods used in the examples of the present invention are all those known to those skilled in the art.
Examples
A splayed self-supporting optical cable as shown in figures 1 and 2 specifically comprises:
an upper unit body 100, a lower unit body 200, and a connection body 300 for connecting the upper unit body 100 and the lower unit body 200;
the upper single body 100 is provided with a wire cavity along the axial direction of the optical cable, and a self-supporting wire body 101 such as a metal wire or a steel stranded wire for self-supporting is arranged in the wire cavity, is used for realizing the axial shaping and hanging bearing of the optical cable, and is a main hanging and loading structure, and the embodiment specifically adopts the steel stranded wire as the self-supporting wire body 101;
a core cavity 205 is arranged in the lower single body 200, and a core wire 400 is arranged in the core cavity 205;
in particular, the method comprises the following steps of,
the lower single body 200 is a circular body with notches arranged on two sides on the radial cross section of the optical cable, the notches extend on the lower single body 200 of the optical cable along the axial direction of the optical cable, a side groove 203 is actually formed, the side groove 203 is communicated to a core cavity 205, so that the lower single body 200 forms two sub-single body structures of a first arc-shaped body 201 and a second arc-shaped body 202 which are arranged up and down, and the two sub-single body structures are connected through an arc-shaped rib 204;
the arc ribs 204 are arranged between the first arc body 201 and the second arc body 202 at intervals in order along the axial direction of the optical cable, and rib grooves 2041 are formed between the adjacent arc ribs 204;
that is, actually, through the arrangement of the side grooves 203 and the arc-shaped ribs 204, the lower single body 200 can still maintain an integral structure and can keep the structure of the core cavity 205 closed, so as to generate an effect of restraining and fixing the core wire 400 therein, and at the same time, a corresponding cavity structure is also generated, and natural environment airflow, such as wind and the like, can enter the core cavity 205 due to the generation of the cavity structure;
the outer diameter of the core wire 400 is slightly smaller than the inner diameter of the core cavity 205, and the difference between the outer diameter of the core wire 400 and the inner diameter of the core cavity 205 is controlled to be 1-3 mm, which can be adjusted according to the specification of the optical cable;
an optical fiber 404 is arranged in the core wire 400;
the optical fiber line 404 is a single optical fiber or a fiber bundle composed of a plurality of optical fibers.
Under the cooperation of the above structures, when the optical cable of the present invention is subjected to the action of ambient wind, the swing amplitude of the optical cable can be greatly reduced, so as to reduce the load burden of the upper single body 100 and the connecting body 300, and reduce the damage of the optical cable in a strong wind environment, which is realized in that the side grooves 203 on the side surfaces of the lower single body 200 form "air inlets" through the structural improvement of the lower single body 200, the arrangement of the air inlets enables the ambient wind to pass through the core cavity 205, from one side of the optical cable lower single body 200 to the other side directly, but the arrangement is not enough, because only the side grooves 203 are arranged and the arc-shaped ribs 204 are adopted to connect to form the structure similar to the lower single body 200 of the present invention, the wind receiving surface is not actually reduced, and the wind force concentrates on the side grooves 203 part, but the swing amplitude of the optical cable lower single body 200 is easy to increase, and the swing amplitude of the present invention can be reduced, and the swing amplitude mainly comprises the control of the outer diameter of the core wire 400 and the inner diameter of the core cavity 205, under the above structure, the optical cable will generate bernoulli effect under the action of wind force, because the core wire 400 is acted by gravity, the lower surface of the core wire 400 is directly contacted with the bottom of the core cavity 205 in the reset state, so a gap is formed between the upper surface of the core wire 400 and the upper part of the inner wall of the core cavity 205, and because the outer surface of the core wire 400 is an arc surface, when the core wire 400 is acted by ambient wind force, the flow rate of the airflow passing through the gap is larger, so a relative negative pressure difference is formed compared with the surrounding environment, at this time, the wind force which should act on the surfaces of the first arc-shaped body 201 and the second arc-shaped body 202 of the upper single body 100 is weakened, the lateral direct stress of the lower single body 200 is reduced, and simultaneously the core wire 400 is gradually blown up, and when the balance between the lift force and the gravity force exerted on the core wire 400 can be generated by the effect of being suspended in the core cavity 205 like, which is also generated by the action of the lift force pressure difference, due to the nature of the core cavity 205 and the inertia of gas flow, the phenomenon that the core wire 400 is suspended is observed in the actual wind tunnel test;
specifically, as shown in fig. 3, in the case of a wind coming from the left side in fig. 3, the initial ambient wind speed may be regarded as v1, and a bernoulli effect is formed due to a gap between the upper surface of the core wire 400 and the upper wall of the core cavity 205, under the effect of which the wind is accelerated through the gap to form a negative pressure region a, so as to generate a suction effect on the initial wind, so that the wind speed v2 near the side groove 203 is greater than v1, and v2 is gradually increased to tend to be stable, and the flow speed v3 of the airflow flowing out from the gap negative pressure region a is also greater than v2 after being accelerated, and in this process, due to the formation of the negative pressure region a, a force F1 is formed, the action of the force F1 on the core wire 400 is similar to a lifting action, F1 is gradually increased to overcome the gravity G, so that the core wire 400 slightly rises in the core cavity 205, and then falls again as the collision or the force F1 between the core wire 400 and the upper wall of the core wire 205 is reduced, and finally a dynamic balance is achieved in a small interval, so as to form a "suspension" of the core wire 400. As shown in fig. 4, in this process, due to the upward movement of the core wire 400, two negative pressure regions, namely a first negative pressure region B and a second negative pressure region C, are formed, and the first negative pressure region B and the second negative pressure region C respectively generate an acting force F2 and an acting force F3, namely in the dynamic balancing process, F2 ≈ F3+ G, so that the core wire 400 is stably suspended;
the difference between the outer diameter of the core wire 400 and the inner diameter of the core cavity 205 is controlled, that is, the difference between the wire diameter and the inner diameter is ensured to generate a good effect in a proper wind power level range, if the difference between the wire diameter and the inner diameter is too small, the core wire 400 is easy to strongly impact the core cavity 205 from top to bottom, and if the difference between the wire diameter and the inner diameter is too large, the bernoulli effect cannot be effectively generated;
on the other hand, in the above process, due to the bernoulli effect, the actual lateral acting force on the core wire 400 is relatively weakened, and due to the difference of the acting forces on the upper side and the lower side, the core wire 400 can buffer the lateral acting force in a form of twisting around the axis of the core wire, so as to reduce the impact force acting on the arc-shaped rib 204 in the lateral direction;
as shown in fig. 5, under the action of the wind speed difference, an a-direction twisting tendency is actually generated, and meanwhile, through the difference between the gas flow rates of the first negative pressure region B and the second negative pressure region C in fig. 4, under the bernoulli effect, the gas flow flows to the lower end of the core wire 400 along the outer wall thereof to converge and flow out, so as to form a reaction force, which can counteract the action of the forward wind force applied to the core wire 400 to a certain extent, reduce the left-right vibration amplitude of the core wire 400 in the core cavity 205, and greatly improve the setting stability of the core wire 400 and the wind resistance of the entire optical cable.
As shown in fig. 6:
in the figure, the left side is a control group 1 without a side groove 203, the lower single body 200 is a conventional single body structure, the middle part of the figure is a control group 2 and a control group 2 without a rib groove 2041 or a core wire 400 completely jointed with the wall of a core cavity 205, the right side is a splayed self-supporting optical cable test group of the invention, under the same wind power simulation test (test parameters: the left side is opposite to the middle part of the lower single body 200, the wind speed is 17.0 m/s), a high-speed camera is adopted to record a swing angle, the maximum swing angle average value is recorded after a plurality of tests, the maximum swing angle of the control group 1 is alpha, the maximum swing angle of the control group 2 without the rib groove 2041 is beta, the maximum swing angle of the control group 2' with the core wire 400 completely jointed with the wall of the core cavity 205 is beta ', the maximum swing angle of the splayed self-supporting optical cable test group is gamma, the alpha average value is recorded to be 35 degrees, the beta average value to be 38 degrees, gamma is 22 degrees, namely gamma is less than beta ', the splayed self-supporting optical cable test has good self-supporting effect, the damage of the splayed self-supporting optical cable under the same wind power, the small wind power, the optical cable 101 can be effectively reduced, and the damage of the splayed self-supporting optical cable can be effectively reduced under the same as the small wind power test.
Further, in the above-mentioned case,
the present invention further provides structural improvements to the core 400, since circumferential twisting of the core 400 is observed during testing, which is also a relatively common form of damage to fiber optic cables;
the core wire 400 comprises a sheath layer 401, a central cavity 402 is arranged in the sheath layer 401, the central cavity 402 is of a circular cavity structure which is coaxial with the sheath layer 401, and an inner bundling tube 403 with an oval radial section is arranged in the central cavity 402;
the two ends of the inner beam tube 403 in the long axis direction are vertically upward and downward, the lower end of the inner beam tube 403 is provided with an optical fiber line 404 tangent to the inner wall of the inner beam tube 403, and the upper end of the inner beam tube is provided with a hollow elastic tube 405;
the outer sides of two ends of the inner beam tube 403 in the short axis direction are provided with the reinforcing members 406, the reinforcing members 406 are arranged along the axial direction of the optical cable and are respectively tangent to the outer wall of the inner beam tube 403 and the inner wall of the central cavity 402, the arrangement of the reinforcing members 406 can reduce the vibration swing of the core wire 400 and reduce the impact on the lower single body 200, and on the other hand, the arrangement of the elliptical inner beam tube 403 and the downward arrangement of the optical fiber line 404 inside the elliptical inner beam tube 403 make the center of the core wire 400, especially the center of the inner beam tube 403, move downward, so that the central cavity 402 can usually drive the inner beam tube 403 to twist when the sheath layer 401 twists, but the swing of the center of gravity can be reduced after the center of gravity shifts, and meanwhile, the swing of the inner beam tube is also limited by the reinforcing members 406, so that the core wire 400 can realize the torsion and force unloading of the outer surface of the core wire and avoid the twisting of the optical fiber line 403, and generate a good protection effect on the optical fiber line 404.
Through the matching of the structures, the splayed self-supporting optical cable can be well applied to areas with rich wind power resources, and the problem of disconnection is reduced.
Claims (8)
1. The utility model provides a splayed self-supporting optical cable which characterized in that includes:
the device comprises an upper monomer, a lower monomer and a connector for connecting the upper monomer and the lower monomer;
the upper single body is provided with a wire cavity along the axial direction of the optical cable, and a self-supporting wire body is arranged in the wire cavity;
the lower single body is composed of two sub single body structures of a first arc-shaped body and a second arc-shaped body which are arranged up and down, two sides of the two sub single body structures are connected through arc-shaped ribs, the first arc-shaped body, the second arc-shaped body and the arc-shaped ribs surround the middle of the lower single body to form a line cavity, and a core wire is arranged in the line cavity;
the arc ribs are arranged between the first arc body and the second arc body at intervals in order along the axial direction of the optical cable, and rib grooves are formed between the adjacent arc ribs;
and an optical fiber wire is arranged in the core wire.
2. Splayed self-supporting optical cable according to claim 1,
the lower single body is a circular body with notches on two sides on the radial cross section of the optical cable, and the wire cavity is arranged at the center of a circle.
3. Splayed self-supporting optical cable according to claim 1,
the outer diameter of the core wire is smaller than the inner diameter of the core cavity.
4. Splayed self-supporting optical cable according to claim 3,
the difference between the outer diameter of the core wire and the inner diameter of the core cavity is controlled to be 1-3 mm.
5. Splayed self-supporting optical cable according to claim 1,
the core wire comprises a sheath layer, and a central cavity is arranged in the sheath layer;
an inner beam tube with an elliptical radial section is arranged in the central cavity;
the optical fiber line is arranged in the inner beam tube.
6. A splayed self-supporting optical cable according to claim 5,
the two ends of the inner beam tube in the long axis direction are vertically upward and downward, the optical fiber line is arranged at the lower end of the inner beam tube in the long axis direction and is tangent to the inner wall of the inner beam tube, and the upper end of the optical fiber line is provided with a hollow elastic tube.
7. A splayed self-supporting optical cable according to claim 5,
and the outer sides of the two ends of the inner beam tube in the short shaft direction are provided with reinforcing parts, and the reinforcing parts are arranged along the axial direction of the optical cable and are respectively tangent to the outer wall of the inner beam tube and the inner wall of the central cavity.
8. Splayed self-supporting optical cable according to any of claims 1 to 7,
the optical fiber line is an optical fiber bundle formed by a single optical fiber or a plurality of optical fibers.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211032937.8A CN115327720A (en) | 2022-08-26 | 2022-08-26 | Splayed self-supporting optical cable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211032937.8A CN115327720A (en) | 2022-08-26 | 2022-08-26 | Splayed self-supporting optical cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118192026A (en) * | 2024-05-17 | 2024-06-14 | 西安西古光通信有限公司 | Wind-resistant wear-resistant butterfly cable |
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| CN107065103A (en) * | 2017-04-20 | 2017-08-18 | 沈阳亨通光通信有限公司 | A kind of water-drop-shaped optical cable, special gold utensil and manufacture method |
| CN114815103A (en) * | 2022-05-06 | 2022-07-29 | 富通集团有限公司 | 8-shaped optical cable |
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2022
- 2022-08-26 CN CN202211032937.8A patent/CN115327720A/en active Pending
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| JP2005043421A (en) * | 2003-07-22 | 2005-02-17 | Fujikura Ltd | Optical fiber cable and its manufacturing method |
| JP2009217081A (en) * | 2008-03-12 | 2009-09-24 | Furukawa Electric Co Ltd:The | Optical fiber cable |
| CN107065103A (en) * | 2017-04-20 | 2017-08-18 | 沈阳亨通光通信有限公司 | A kind of water-drop-shaped optical cable, special gold utensil and manufacture method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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