CN114815104B - Air-supported butterfly cable - Google Patents
Air-supported butterfly cable Download PDFInfo
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- CN114815104B CN114815104B CN202210494302.3A CN202210494302A CN114815104B CN 114815104 B CN114815104 B CN 114815104B CN 202210494302 A CN202210494302 A CN 202210494302A CN 114815104 B CN114815104 B CN 114815104B
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- optical fiber
- sheath layer
- butterfly cable
- wire cavity
- air
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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
- G02B6/4415—Cables for special applications
- G02B6/4427—Pressure resistant cables, e.g. undersea cables
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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
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
-
- 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
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
- G02B6/4432—Protective covering with fibre reinforcements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The invention belongs to the field of cables, and particularly relates to an air-supported butterfly cable. It comprises the following steps: the optical fiber cable comprises a sheath layer and a plurality of optical fiber cables arranged in the sheath layer, wherein the outside of each optical fiber cable is coated with a bundle pipe; the upper surface and the lower surface of the sheath layer are both provided with a concave structure, the left side and the right side of the sheath layer are respectively provided with a circular part, a wire cavity is arranged in the circular parts, and an optical fiber wire is arranged in the wire cavity; a shell layer is attached to the outer surface of the sheath layer, and the center of the sunken structure cuts the shell layer along the axial direction of the butterfly cable to form a slot; the inner surface of the shell layer is provided with annular grains, capillary holes arranged in an array mode are formed in the outer surfaces of the upper end and the lower end of the circular portion of the sheath layer in a needle machining mode, and the capillary holes are communicated to the wire cavity. The butterfly cable realizes gas buffering through special structure matching, and forms excellent compression-resistant buffering effect through gas compression and deformation buffering of the flow matching structure, so that the optical fiber cable can be relatively independently and stably arranged in the butterfly cable and can be well protected when being compressed.
Description
Technical Field
The invention belongs to the field of cables, and particularly relates to an air-supported butterfly cable.
Background
Optical fiber cables are common cables for realizing optical signal transmission functions in the field of communications, and have been developed rapidly in recent years, and various optical fiber cables have been produced.
The butterfly optical cable (also called butterfly cable) is a very common optical cable type, is a novel user access optical cable, reasonably designs an optical cable structure and various technical parameters according to different application environments and laying conditions, integrates the characteristics of indoor soft optical cables and self-supporting optical cables, is an optimal candidate product for FTTX network solution, and plays a unique role in building intelligent buildings, digital communities, campus networks, local area networks and other networks.
However, the butterfly cable has a very limited pressure resistance due to its special structure, and the internal optical fiber is very easy to be damaged by pressure after being pressed, so that improving the pressure resistance of the butterfly cable is an important direction in the current development of butterfly cables.
Disclosure of Invention
The invention provides an air-supported butterfly cable, aiming at solving the problems that the existing butterfly cable is weak in compression resistance and an optical fiber line inside the butterfly cable is easy to damage after being compressed.
The invention aims to:
1. the compression resistance of the optical cable can be greatly enhanced, so that the optical cable is not easy to damage after being compressed;
2. through special structural cooperation, make optical cable atress or atress not basically behind the optical cable pressurized to form gaseous buffering effect.
In order to achieve the purpose, the invention adopts the following technical scheme.
An air-supported butterfly cable comprising:
the optical fiber cable comprises a sheath layer and a plurality of optical fiber cables arranged in the sheath layer, wherein the outside of each optical fiber cable is coated with a bundle pipe;
the upper surface and the lower surface of the sheath layer are respectively provided with a corresponding concave structure, the left side and the right side of each concave structure are respectively provided with a circular part, a wire cavity is arranged in each circular part, and an optical fiber wire is arranged in each wire cavity;
a shell layer is attached to the outer surface of the sheath layer, and a cutting seam is formed in the shell layer in a cutting processing mode along the axial direction of the butterfly cable at the center of the concave structure of the sheath layer;
the inner surface of the shell layer is provided with sunken annular grains around the butterfly cable in the circumferential direction, capillary holes arranged in an array mode are formed in the outer surfaces of the upper end and the lower end of the circular portion of the sheath layer in a needle machining mode, and the capillary holes are communicated to the wire cavity.
As a preference, the first and second liquid crystal compositions are,
the optical fiber line is formed by winding a non-woven fabric tape around an optical fiber bundle formed by a single optical fiber or a plurality of optical fibers.
As a preference, the first and second liquid crystal compositions are,
the width and the depth of the ring grain are both less than or equal to 0.5mm.
As a preference, the first and second liquid crystal compositions are,
the outer surface of the concave structure of the sheath layer forms a plurality of uniformly arranged concave grooves along the axial direction of the butterfly cable in a cutting processing mode.
As a preference, the first and second liquid crystal compositions are,
the inner diameter of the wire cavity is larger than the outer diameter of the optical fiber wire, the left side and the right side of the inner wall of the wire cavity are respectively provided with a boss, and the two bosses in the same wire cavity limit and fix the beam tube, so that the beam tube and the wire cavity are coaxially arranged.
As a preference, the first and second liquid crystal compositions are,
the upper end and the lower end of the beam tube are respectively provided with a buffer strip, and the buffer strips are not contacted with the beam tube and the wire cavity;
the radial cross section of the butterfly cable is provided with an arc-shaped buffer strip, and two ends of the arc-shaped buffer strip are respectively inserted into two boss side walls of the wire cavity.
As a preference, the first and second liquid crystal compositions are,
preparing a plurality of micro-airbag arrays on the outer surface of the buffer strip by a deposition method and/or a micro-structure blow molding process;
the micro air bag array is filled with air.
The invention has the beneficial effects that:
the gas buffering is realized through the special structure cooperation, the deformation buffering of the compression and flow cooperation structure through gas forms very excellent resistance to compression buffering effect for the optical fiber line can set up in the butterfly cable relatively independently and stably, can receive good protection when the pressurized.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the shell and its inner surface ring patterns;
FIG. 3 is a schematic view of localized elastic recovery without microballoons;
FIG. 4 is a schematic view of the local elastic recovery of the matched micro-balloons;
in the figure: 100 sheath layers, 101 concave structures, 1011 concave grooves, 102 circular parts, 1021 wire cavities, 1021A outer spaces, 1021B inner spaces, 10211 bosses, 1022 capillary holes, 200 shell layers, 201 slots, 202 annular patterns, 300 optical fiber wires, 400 bundles of tubes, 500 buffer strips and 501 micro air bags.
The specific implementation mode is as follows:
the invention is described in further detail below with reference to specific embodiments and drawings. 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
An air-supported butterfly cable as shown in fig. 1, comprising:
a sheath layer 100, and a plurality of optical fiber lines 300 disposed in the sheath layer 100;
the optical fiber line 300 is formed by winding a non-woven fabric tape around an optical fiber bundle formed by wrapping a single optical fiber or a plurality of optical fibers;
the sheath layer 100 is in a horizontal 8 shape or a shape similar to the horizontal 8 shape, the upper surface and the lower surface of the sheath layer are respectively provided with a corresponding concave structure 101, two sides of each concave structure 101 are respectively provided with a circular part 102, and the sheath layer 100 of the butterfly cable can also be regarded as formed by connecting the two circular parts 102 through the concave structures 101;
the sheath layer 100 is provided with a sheath layer 200 in an attached manner on the outer surface, the sheath layer 200 is made of water-resistant and aging-resistant fluororubber and is fixed on the outer surface of the sheath layer 100 in an adhesive or welding manner, and a cutting seam 201 is formed on the sheath layer 200 in the axial direction of the butterfly cable at the center of the concave structure 101 of the sheath layer 100 in a cutting manner;
as shown in fig. 2, the inner surface of the shell layer 200 is provided with a recessed ring grain 202 around the circumference of the butterfly cable, the width and depth of the ring grain 202 are both less than or equal to 0.5mm, and the outer surface of the recessed structure 101 of the sheath layer 100 is provided with a plurality of uniformly arranged recessed grooves 1011 by cutting along the axial direction of the butterfly cable;
a wire cavity 1021 is concentrically arranged in the circular part 102 of the sheath layer 100 and corresponds to the circular part 102, the optical fiber line 300 is coated in the wire cavity 1021 by a beam tube 400, and the inner diameter of the wire cavity 1021 is larger than the outer diameter of the optical fiber line 300;
the outer surfaces of the upper end and the lower end of the circular part 102 of the sheath layer 100 form capillary holes 1022 arranged in an array mode through a needle processing mode, the capillary holes 1022 are communicated with the wire cavity 1021, so that the wire cavity 1021 has the capacity of gas exchange with the outside, the effect of realizing compression resistance and buffering through gas flow can be realized through the capacity of gas exchange, acting force applied by the outside is converted into kinetic energy of gas flow, the gas in the wire cavity 1021 is endowed with the kinetic energy and then sequentially passes through the capillary holes 1022 and the annular patterns 202 to be circulated to the outside of the butterfly cable, in the process, the acting force applied by the outside is continuously consumed by the flowing friction of the gas, after the external force disappears, as each part is stressed and compressed to generate elastic restoring force, negative pressure is generated in the wire cavity 1021 in the elastic restoring process, and air in the external environment is sucked to restore the impact resistance of the wire cavity again;
specifically, after the butterfly cable is stressed, the circular portion 102 of the sheath layer 100 is inevitably used as a first force-bearing portion, the circular portion 102 is flattened after being stressed, the space 1021B in the wire cavity 1021 is compressed, so that the internal air pressure is increased to generate a pressure difference with the external environment, and gas flow is generated under the action of the pressure difference, so = as described above, the external force is converted into gas kinetic energy, and the gas kinetic energy is limited by the capillary holes 1022 and the annular grooves 202 in the flowing process, so that friction loss is continuously generated, the external force can be further converted, and a very excellent buffering and pressure-resisting effect can be formed;
if the shell layer 200 is not arranged, after external force acting on the butterfly cable is converted into kinetic energy of gas in the wire cavity 1021, the gas quickly escapes through the capillary holes 1022, the buffering effect is quickly weakened until the buffering effect disappears, and in the process, the kinetic energy loss of the gas is small only through the capillary holes 1022, so that the upper limit of the compression-resistant buffering capacity of the butterfly cable is weakened, the effective compression-resistant buffering effect cannot be realized, and meanwhile, the interior of the butterfly cable is affected by damp, especially in rainy and snowy weather, external water easily enters the wire cavity 1021 through the capillary holes 1022, so that the internal damp further affects the performance of the optical fiber, therefore, the shell layer 200 is necessary, but the simple shell layer 200 arrangement also can generate the capillary effect, so that the water enters the wire cavity 1021 through the ring grooves 202 and the capillary holes, therefore, the invention also creatively arranges the sunken grooves 1011 at the sunken structure 101 of the sheath layer 100, the sunken grooves 1011 can realize the damp-proof effect, and when external water vapor passes through the cut seams 201 and the ring grooves 202, the volume of the grooves 1011 causes the water vapor to generate the tendency of entering the wire cavity 1021, so as to cause damage to the optical fiber cable 1021.
Further, in the above-mentioned case,
the left side and the right side of the inner wall of the line cavity 1021 are respectively provided with a boss 10211, the table surface of each boss 10211 is an arc surface matched with the outer side surface of the beam tube 400, and the two bosses 10211 in the same line cavity 1021 limit and fix the beam tube 400, so that the beam tube 400 and the line cavity 1021 are coaxially arranged, and the upper end and the lower end of the beam tube 400 can be separated from the inner wall of the line cavity 1021 and separated from the inner wall of the line cavity 1021;
in addition, the upper end and the lower end of the beam tube 400 are respectively provided with a buffer strip 500, and the buffer strips 500 are not in direct abutting contact with the beam tube 400 and the wire cavity 1021;
the buffering strip 500 is made of elastic resin, and is arc-shaped on the radial section of the butterfly cable, and two arc-shaped ends of the buffering strip are respectively inserted into the side walls of the two bosses 10211 of the wire cavity 1021;
under the cooperation of the above structures, direct stress of the optical fiber cable 300 can be further avoided, the buffer strip 500 can play a direct buffer effect, on the other hand, the arrangement of the buffer strip 500 enables two gas spaces to be formed in the cable cavity 1021, one gas space is an inner space 1021B close to the bundle tube 400, the gas in the space is closed, the other gas space is a semi-open outer space 1021A outside the buffer strip 500, the gas is limited by the capillary holes 1022 and the shell 200 and is difficult to directly exchange with the external environment, after being compressed, the pressure change is mainly performed by the outer space 1021A, the effect of increasing the pressure on the surface of the bundle tube 400 so as to extrude the bundle tube 400 and the optical fiber cable 300 in the bundle tube 400 is reduced, meanwhile, under the condition of the same compression amount, the main compression is the outer space 1021A part, the compression ratio of the single outer space 1021A is obviously increased when being compressed, the pressure change in the outer space 1021A is stronger, the gas in the outer space 1021A obtains larger kinetic energy to generate a higher flow rate, the higher conversion and the loss of acting force exerted on the butterfly cable, and the better buffer effect of the butterfly cable is generated.
In a still further aspect of the present invention,
the outer surface of the buffer strip 500 is provided with a plurality of micro air bags 501 arrays through a deposition method and/or a microstructure blow molding process, the micro air bags 501 arrays are filled with air, after the optical cable is stressed, extruded and deformed, the micro air bags can also be deformed to slightly enhance the compression-resistant buffer effect of the butterfly cable, but more importantly, after the external force disappears, due to the elastic recovery tendency generated by the structural deformation, the wire cavity 1021, especially the outer space 1021A outside the buffer strip 500 in the wire cavity 1021 generates negative pressure, as shown in fig. 3, the recovery speed of the butterfly cable structure is easily slowed down, as is found in observation after the pressure test is finished, a certain permanent deformation is easily generated, especially after more than 80 times of flattening tests, about 6% of permanent deformation is generated, and the recovery is difficult to recover, because the negative pressure is generated in the recovery deformation process of the butterfly cable structure, the negative pressure limits the recovery deformation of the structure, and after the micro air bags 501 arrays are formed, as shown in fig. 4, the micro air bags 501 expand under the negative pressure of the negative pressure in the outer space 1021A is reduced, the negative pressure can further reduce the influence on the recovery of the butterfly cable structure, and greatly improve the service life of the butterfly cable.
Claims (7)
1. An air-supported butterfly cable, comprising:
the optical fiber cable comprises a sheath layer and a plurality of optical fiber cables arranged in the sheath layer, wherein the outside of each optical fiber cable is coated with a bundle pipe;
the upper surface and the lower surface of the sheath layer are respectively provided with a corresponding concave structure, the left side and the right side of each concave structure are respectively provided with a circular part, a wire cavity is arranged in each circular part, and an optical fiber wire is arranged in each wire cavity;
a shell layer is attached to the outer surface of the sheath layer, and a cutting seam is formed in the shell layer in a cutting processing mode along the axial direction of the butterfly cable at the center of the concave structure of the sheath layer;
the inner surface of the shell layer is provided with sunken annular grains around the butterfly cable in the circumferential direction, capillary holes arranged in an array mode are formed in the outer surfaces of the upper end and the lower end of the circular portion of the sheath layer in a needle machining mode, and the capillary holes are communicated to the wire cavity.
2. An air-supported butterfly cable according to claim 1,
the optical fiber line is composed of an optical fiber bundle formed by winding and coating a single optical fiber or a plurality of optical fibers by a non-woven fabric wrapping tape.
3. An air-bearing butterfly cable according to claim 1,
the width and the depth of the ring grains are both less than or equal to 0.5mm.
4. An air-bearing butterfly cable according to claim 1,
the outer surface of the concave structure of the sheath layer forms a plurality of uniformly arranged concave grooves along the axial direction of the butterfly cable in a cutting processing mode.
5. An air-supported butterfly cable according to claim 1,
the inner diameter of the wire cavity is larger than the outer diameter of the optical fiber wire, the left side and the right side of the inner wall of the wire cavity are respectively provided with a boss, and the two bosses in the same wire cavity limit and fix the beam tube, so that the beam tube and the wire cavity are coaxially arranged.
6. An air-supported butterfly cable according to claim 5,
the upper end and the lower end of the beam tube are respectively provided with a buffer strip, and the buffer strips are not contacted with the beam tube and the wire cavity;
the radial cross section of the butterfly cable is provided with an arc-shaped buffer strip, and two ends of the arc-shaped buffer strip are respectively inserted into two boss side walls of the wire cavity.
7. An air-supported butterfly cable according to claim 6,
preparing a plurality of micro-airbag arrays on the outer surface of the buffer strip by a deposition method and/or a micro-structure blow molding process;
the micro air bag array is filled with air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210494302.3A CN114815104B (en) | 2022-05-07 | 2022-05-07 | Air-supported butterfly cable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210494302.3A CN114815104B (en) | 2022-05-07 | 2022-05-07 | Air-supported butterfly cable |
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| CN114815104A CN114815104A (en) | 2022-07-29 |
| CN114815104B true CN114815104B (en) | 2023-04-07 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111781689A (en) * | 2020-07-27 | 2020-10-16 | 杭州富通通信技术股份有限公司 | Optical cable |
| CN113176641A (en) * | 2021-04-26 | 2021-07-27 | 长飞光纤光缆股份有限公司 | Butterfly-shaped optical cable for air-blowing laying and manufacturing method thereof |
| WO2021258793A1 (en) * | 2020-06-24 | 2021-12-30 | 华为技术有限公司 | Photoelectric composite cable and communications system |
| CN113970819A (en) * | 2021-10-26 | 2022-01-25 | 深圳新澳科电缆有限公司 | Detachable combined butterfly cable |
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2022
- 2022-05-07 CN CN202210494302.3A patent/CN114815104B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021258793A1 (en) * | 2020-06-24 | 2021-12-30 | 华为技术有限公司 | Photoelectric composite cable and communications system |
| CN111781689A (en) * | 2020-07-27 | 2020-10-16 | 杭州富通通信技术股份有限公司 | Optical cable |
| CN113176641A (en) * | 2021-04-26 | 2021-07-27 | 长飞光纤光缆股份有限公司 | Butterfly-shaped optical cable for air-blowing laying and manufacturing method thereof |
| CN113970819A (en) * | 2021-10-26 | 2022-01-25 | 深圳新澳科电缆有限公司 | Detachable combined butterfly cable |
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| CN114815104A (en) | 2022-07-29 |
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