CN111221088B - Optical cable - Google Patents
Optical cable Download PDFInfo
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- CN111221088B CN111221088B CN202010102624.XA CN202010102624A CN111221088B CN 111221088 B CN111221088 B CN 111221088B CN 202010102624 A CN202010102624 A CN 202010102624A CN 111221088 B CN111221088 B CN 111221088B
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- optical cable
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- inductance element
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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
- G02B6/443—Protective covering
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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
- G02B6/44384—Means specially adapted for strengthening or protecting the cables the means comprising water blocking or hydrophobic materials
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Communication Cables (AREA)
Abstract
The invention discloses an optical cable which comprises a conductive assembly, an optical fiber core piece, a combined sheath, a micropore water absorption layer and a PVC layer, wherein the conductive assembly is arranged from inside to outside and comprises a positive wire and a negative wire insulation sleeve, the optical fiber core piece comprises a plurality of frameworks and a plurality of optical fibers, the combined sheath comprises a waterproof layer and an automatic compensation layer, the automatic compensation layer comprises an inductance element and an elastic iron sheet, a plurality of sections of hot melting strips are arranged between the inductance element and the elastic iron sheet, heating wires are arranged in the hot melting strips, one ends of the heating wires and the inductance element are connected with the positive wire through first conducting wires, the other ends of the heating wires and the inductance element are connected with the negative wire through second conducting wires, the second conducting wires extend outwards and enter the micropore water absorption layer, a damping cavity is arranged between the waterproof layer and the hot melting strips, and. According to the invention, aiming at the damaged part on the PVC layer, the hot melt adhesive can be filled into the damping cavity, so that the waterproof performance of the optical cable is enhanced, and the service life of the optical cable is prolonged.
Description
Technical Field
The invention relates to the field of optical cable production, in particular to an optical cable.
Background
Fiber optic cables are manufactured to meet optical, mechanical, or environmental performance specifications and utilize one or more optical fibers disposed in a covering jacket as the transmission medium and may be used individually or in groups as telecommunication cable assemblies.
The existing optical cable is mainly paved and used outdoors, the optical cable is inevitably bitten by animals, so that a sheath is damaged, and moisture permeates into the optical cable from the damaged part, so that the performance of the optical cable is influenced. When the cable jacket is damaged, it is often necessary to replace the cable. In order to prevent animals from gnawing, the current method is to wrap a layer of steel armor outside the optical cable, so that the weight of the whole optical cable is greatly increased.
Disclosure of Invention
Aiming at the problems, the invention provides a novel optical cable, when an optical cable sheath is damaged, the optical cable can be quickly repaired, the defect that the whole optical cable needs to be replaced after an animal gnaws is avoided, and meanwhile, the optical cable disclosed by the invention avoids the use of steel armor, so that the whole optical cable is light in weight and better in bending performance.
The technical scheme adopted by the invention is as follows:
an optical cable is sequentially provided with a conductive assembly, an optical fiber core piece, a combined sheath, a micropore water absorption layer and a PVC layer from inside to outside, wherein the conductive assembly comprises a positive electric wire, a negative electric wire and an insulating sleeve, the insulating sleeve is positioned on the outer sides of the positive electric wire and the negative electric wire, the optical fiber core piece comprises a plurality of frameworks and a plurality of optical fibers, and the optical fibers are fixed in the frameworks at intervals;
the combined sheath comprises a waterproof layer positioned on the outer layer and an automatic compensation layer positioned on the inner layer, the automatic compensation layer comprises an arc-shaped inductance element positioned on the outer layer and an elastic iron sheet positioned on the inner layer, the inductance element can generate magnetism in a power-on state, the elastic iron sheet comprises a plurality of inward-protruding elastic parts and a plurality of arc-shaped connecting parts, the connecting parts are connected with two adjacent elastic parts, one end of the framework abuts against the connecting parts of the elastic iron sheets, and the other end of the framework is fixedly connected with the insulating sleeve;
be provided with the hot melt strip that the multistage extends to optical cable length direction between inductance element and the elasticity iron sheet, be equipped with the heating wire in the hot melt strip, positive electric wire is connected through first conductor wire to heating wire and inductance element one end, the heating wire and the inductance element other end pass through the second conductor wire and connect the negative pole electric wire, the second conductor wire extends outward and gets into the micropore layer that absorbs water, the fracture has still been seted up to the part that the second conductor wire is located the micropore layer that absorbs water, the shock attenuation cavity has between waterproof layer and the hot melt strip, still pack in the shock attenuation cavity and have the supporting shoe of connecting both. When the outermost PVC layer is damaged (such as being bitten by mice, ants and the like), water enters the micropore water absorption layer and further permeates into the fracture along the micropore water absorption layer, so that the second conducting wire is conducted, the two ends of the heating wire form a passage, the electrified positive conducting wire and the electrified negative conducting wire supply power to the heating wire, the heating wire generates heat to melt the hot melt strip, and meanwhile, the inductance element generates magnetism after being electrified, so that the elastic iron sheet extrudes the molten hot melt strip glue outwards to flow into the middle opening of the damping cavity. According to the invention, aiming at the damaged part formed after the sheath is bitten by an animal, the hot melt adhesive can be automatically filled into the damping cavity to form a brand new waterproof layer, so that the waterproof performance of the optical cable is enhanced, the service life of the optical cable is prolonged, and the use of a steel armor with heavier weight is avoided; meanwhile, the existing steel-armored optical cable has small deformation limit and poor damping effect and bending resistance. The optical cable is provided with the shock absorption cavity and the supporting block, so that the shock absorption effect and the bending resistance of the optical cable are improved, and the overall weight is lighter.
Optionally, a fiber paste is filled between the skeleton and the optical fiber.
Optionally, sodium chloride crystals are arranged between the fractures. According to the invention, the sodium chloride crystals are arranged in the fracture, and when moisture enters the fracture, the sodium chloride crystals are dissolved, so that the conductivity of liquid at the fracture is increased, and the circuit is conducted.
Optionally, the outer surface of the PVC layer is a smooth curved surface.
Optionally, the hot melt strip is made of solid hot melt adhesive.
Optionally, the melting point of the hot melt adhesive is 70-90 ℃.
Optionally, the microporous water absorbing layer is made of a capillary material.
Optionally, the support block is made of a hot melt adhesive material. The supporting block is made of a hot melt adhesive material, and is light in weight, and better in damping effect and bending resistance.
Advantageous effects
1. When the outermost PVC layer is damaged (such as being bitten by mice, ants and the like), water enters the micropore water absorption layer and further permeates into the fracture along the micropore water absorption layer, so that the second conducting wire is conducted, the two ends of the heating wire form a passage, the electrified positive conducting wire and the electrified negative conducting wire supply power to the heating wire, the heating wire generates heat to melt the hot melt strip, and meanwhile, the inductance element generates magnetism after being electrified, so that the elastic iron sheet extrudes the molten hot melt strip glue outwards to flow into the middle opening of the damping cavity. According to the invention, aiming at the damaged part formed after the sheath is bitten by an animal, the hot melt adhesive can be automatically filled into the damping cavity to form a brand new waterproof layer, so that the waterproof performance of the optical cable is enhanced, the service life of the optical cable is prolonged, and the use of a steel armor with heavier weight is avoided; meanwhile, the existing steel-armored optical cable has small deformation limit and poor damping effect and bending resistance. The optical cable is provided with the shock absorption cavity and the supporting block, so that the shock absorption effect and the bending resistance of the optical cable are improved, and the overall weight is lighter.
Description of the drawings:
fig. 1 is a sectional view showing the construction of an optical cable of example 1 of the present invention incorporated into an ant-proof member;
fig. 2 is a partial sectional structural view a-a of the optical cable of example 1 of the present invention, which is not incorporated with the ant-proof member.
The figures are numbered:
1. the optical fiber shock-absorbing module comprises a conductive component, 2, an optical fiber core, 3, a combined sheath, 4, a microporous water absorbing layer, 5, a PVC layer, 6, a positive electric wire, 7, a negative electric wire, 8, an insulating sleeve, 9, a framework, 10, an optical fiber, 11, a waterproof layer, 12, an automatic compensation layer, 13, an arc-shaped inductance element, 14, an elastic iron sheet, 15, an electric heating wire, 16, a first electric wire, 17, a second electric wire, 18, a fracture, 19, a hot melting strip, 20, a shock-absorbing cavity, 21, a supporting block, 22, a connecting part, 23, a sodium chloride crystal, 24 and an elastic part.
The specific implementation mode is as follows:
the present invention will be described in detail below with reference to the accompanying drawings.
Example 1
As shown in fig. 1 and 2, the invention discloses an optical cable, which is sequentially provided with a conductive component 1, an optical fiber core member 2, a combined sheath 3, a microporous water absorption layer 4 and a PVC layer 5 from inside to outside, wherein the conductive component comprises a positive electric wire 6, a negative electric wire 7 and an insulating sleeve 8, the insulating sleeve is positioned at the outer sides of the positive electric wire and the negative electric wire, the optical fiber core member comprises six frameworks 9 and six optical fibers 10, and the optical fibers are alternately fixed in the frameworks. The framework and the optical fiber are filled with fiber paste, the outer surface of the PVC layer is a smooth curved surface, and the microporous water absorption layer is made of a capillary material. The positive electrode wire and the negative electrode wire of the embodiment are copper wires coated with an insulating material. It should be noted that in actual production, in order to improve the transmission capability of the optical cable, the optical fiber may be replaced by an optical fiber bundle.
Wherein, the combination sheath is including being located outer waterproof layer 11 and being located the automatic compensation layer 12 of inlayer, and the automatic compensation layer is including being located outer arc inductance component 13 and being located the elastic iron sheet 14 of inlayer, and inductance component circular telegram state can produce magnetism down, and the elastic iron sheet includes the connecting portion 22 of a plurality of inside convex elastic part 24 and a plurality of arcuations, and two adjacent elastic parts are connected to connecting portion, and skeleton one end supports the connecting portion of elastic iron sheet, other end fixed connection insulating cover.
In the present invention, iron pieces are used, and other metal materials that attract magnets may be used, but the cost of the iron pieces is obviously the lowest. The elastic iron piece of the present embodiment may be provided with an elastic force restoring outward.
It should be noted that the inductance element of the present embodiment is a commercially available element, and may be customized into an arc shape or not.
A plurality of sections of hot melt strips 19 extending to the length direction of the optical cable are arranged between the inductance element and the elastic iron sheet, the hot melt strips are made of solid hot melt adhesive, and the melting point of the hot melt adhesive is 70-90 ℃. A heating wire 15 is arranged in the hot melting strip, one end of the heating wire and one end of the inductance element are connected with an anode wire through a first conductive wire 16, the other end of the heating wire and the other end of the inductance element are connected with a cathode wire through a second conductive wire 17, the second conductive wire extends outwards and enters the micropore water absorption layer, a fracture 18 is further formed in the part, located on the micropore water absorption layer, of the second conductive wire, and a sodium chloride crystal 23 is arranged between the fractures. A damping cavity 20 is arranged between the waterproof layer and the hot melt strip, a supporting block 21 for connecting the waterproof layer and the hot melt strip is filled in the damping cavity, and the supporting block is made of a hot melt adhesive material. The supporting block is made of a hot melt adhesive material, and is light in weight, and better in damping effect and bending resistance. It should be noted that, in this embodiment, the first conductive wire and the second conductive wire pass through the waterproof layer, the shock absorption cavity, and the connection portion and extend into the insulating sleeve to communicate the positive conductive wire and the negative conductive wire, respectively.
It should be noted that, the supporting block of the invention can be V-shaped, and the anti-seismic effect is better.
In the invention, when a damaged part of the sheath gnawed by an animal is found, the positive electrode conducting wire and the negative electrode conducting wire are continuously electrified, so that the elastic iron sheet outwards extrudes the molten hot melt strip adhesive to flow into the damping cavity, and then the power supply is stopped.
When this embodiment is implemented, gnaw and eat and open outermost PVC layer when the animal, moisture gets into the micropore and absorbs water the layer and absorb water the layer along the micropore and permeate and get into the fracture, dissolve the sodium chloride crystal, make the second conductor wire switch on, and then make the both ends of heating wire form the both ends of route intercommunication heating wire, give heating wire and arc inductance element power supply to the anodal conductor wire and the negative pole conductor wire of circular telegram, make the heating wire generate heat and hot melt strip melting, inductance element produces magnetism after the circular telegram simultaneously, make the outside extrusion fused hot melt strip of elasticity iron sheet glue flow in the shock attenuation cavity.
When the optical cable is produced, the framework is connected with the insulating sleeve, the first conducting wire and the second conducting wire penetrate through the insulating sleeve and the framework, and fiber paste is coated on the outer side of the assembled framework; installing the elastic iron sheet and the connecting part on the outer side of the framework, then introducing into a mold, injecting hot melt adhesive liquid to form a hot melt adhesive tape, and adhering a support block on the hot melt adhesive tape after cooling; wrapping the waterproof strip outside the supporting block, and sealing by hot melt adhesive to form a sealed waterproof layer; and finally, wrapping the PVC layer filled with the sodium chloride crystals on the outer side of the waterproof layer, and sealing through hot melt adhesive to form a sealed PVC layer.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings can be directly or indirectly applied to other related technical fields and are included in the scope of the present invention.
Claims (7)
1. An optical cable is characterized in that a conductive assembly, an optical fiber core piece, a combined sheath, a micropore water absorption layer and a PVC layer are sequentially arranged from inside to outside, the conductive assembly comprises a positive wire, a negative wire and an insulating sleeve, the insulating sleeve is positioned on the outer sides of the positive wire and the negative wire, the optical fiber core piece comprises a plurality of frameworks and a plurality of optical fibers, and the optical fibers are alternately fixed in the frameworks;
the combined sheath comprises a waterproof layer positioned on the outer layer and an automatic compensation layer positioned on the inner layer, the automatic compensation layer comprises an arc-shaped inductance element positioned on the outer layer and an elastic iron sheet positioned on the inner layer, the inductance element can generate magnetism in a power-on state, the elastic iron sheet comprises a plurality of inward-protruding elastic parts and a plurality of arc-shaped connecting parts, the connecting parts are connected with two adjacent elastic parts, one end of the framework abuts against the connecting parts of the elastic iron sheets, and the other end of the framework is fixedly connected with the insulating sleeve;
a plurality of sections of hot melting strips extending to the length direction of the optical cable are arranged between the inductance element and the elastic iron sheet, heating wires are arranged in the hot melting strips, one ends of the heating wires and the inductance element are connected with an anode wire through a first conducting wire, the other ends of the heating wires and the inductance element are connected with a cathode wire through a second conducting wire, the second conducting wire extends outwards and enters the micropore water absorption layer, a fracture is further formed in the part, located on the micropore water absorption layer, of the second conducting wire, and sodium chloride crystals are arranged in the fracture; a damping cavity is arranged between the waterproof layer and the hot melt strip, and a supporting block for connecting the waterproof layer and the hot melt strip is filled in the damping cavity.
2. The optical cable of claim 1, wherein a fiber paste is filled between the backbone and the optical fiber.
3. An optical cable as claimed in claim 1, wherein the outer surface of the PVC layer is smoothly curved.
4. A cable as claimed in claim 1, 2 or 3, wherein said hot melt strip is made of a solid hot melt adhesive.
5. An optical cable according to claim 4, wherein said hot melt adhesive has a melting point of 70-90 ℃.
6. An optical cable as claimed in claim 5, wherein said micro-porous water absorbent layer is made of a capillary material.
7. The fiber optic cable of claim 6, wherein said support block is made of a hot melt adhesive material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010102624.XA CN111221088B (en) | 2020-02-19 | 2020-02-19 | Optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010102624.XA CN111221088B (en) | 2020-02-19 | 2020-02-19 | Optical cable |
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| Publication Number | Publication Date |
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| CN111221088A CN111221088A (en) | 2020-06-02 |
| CN111221088B true CN111221088B (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010102624.XA Active CN111221088B (en) | 2020-02-19 | 2020-02-19 | Optical cable |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113311553B (en) * | 2021-07-01 | 2022-09-16 | 杭州富通通信技术股份有限公司 | Optical cable |
| CN114545576A (en) * | 2022-01-19 | 2022-05-27 | 杭州富通通信技术股份有限公司 | Rat-proof and termite-proof optical cable |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201075141Y (en) * | 2007-06-29 | 2008-06-18 | 江苏永鼎股份有限公司 | Novel all-dielectric self-supporting optical cable |
| CN203350498U (en) * | 2013-06-25 | 2013-12-18 | 滕建强 | Safe cable |
| CN108594377A (en) * | 2018-01-31 | 2018-09-28 | 成都亨通光通信有限公司 | The production technology and production mould of rodent-resistant cable easy to identify, optical cable |
| WO2018222547A2 (en) * | 2017-05-31 | 2018-12-06 | Corning Research & Development Corporation | Super-absorbent swellable hot melt coated optical fibers, buffer tubes, cable designs thereof and manufacturing processes |
| CN110749964A (en) * | 2019-10-23 | 2020-02-04 | 杭州富通通信技术股份有限公司 | Optical cable |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2272428T3 (en) * | 2000-09-21 | 2007-05-01 | Draka Comteq B.V. | IMPROVED OPTICAL FIBER CABLE CONTAINING THERMOSTALLY UNITED OPTICAL FIBER PROTECTION PIPES AND MANUFACTURING PROCESS. |
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2020
- 2020-02-19 CN CN202010102624.XA patent/CN111221088B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201075141Y (en) * | 2007-06-29 | 2008-06-18 | 江苏永鼎股份有限公司 | Novel all-dielectric self-supporting optical cable |
| CN203350498U (en) * | 2013-06-25 | 2013-12-18 | 滕建强 | Safe cable |
| WO2018222547A2 (en) * | 2017-05-31 | 2018-12-06 | Corning Research & Development Corporation | Super-absorbent swellable hot melt coated optical fibers, buffer tubes, cable designs thereof and manufacturing processes |
| CN108594377A (en) * | 2018-01-31 | 2018-09-28 | 成都亨通光通信有限公司 | The production technology and production mould of rodent-resistant cable easy to identify, optical cable |
| CN110749964A (en) * | 2019-10-23 | 2020-02-04 | 杭州富通通信技术股份有限公司 | Optical cable |
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| CN111221088A (en) | 2020-06-02 |
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