CN105785528A - Nonmetal optical cable capable of preventing lightening - Google Patents
Nonmetal optical cable capable of preventing lightening Download PDFInfo
- Publication number
- CN105785528A CN105785528A CN201610069195.4A CN201610069195A CN105785528A CN 105785528 A CN105785528 A CN 105785528A CN 201610069195 A CN201610069195 A CN 201610069195A CN 105785528 A CN105785528 A CN 105785528A
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- Prior art keywords
- metallic
- optical fiber
- coating
- sheath
- loose tube
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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
- G02B6/4434—Central member to take up tensile loads
-
- 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)
- Insulated Conductors (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The invention belongs to the cable technical field, and relates to a nonmetal optical cable capable of preventing lightening. The optical cable includes a central reinforcing piece, a loose tube, a protection layer and a sheath layer. The central reinforcing piece is arranged in the center of the optical cable. The loose tube is arranged outside the central reinforcing piece in a unilateral and bilateral spiral transposition manner and contains therein a plurality of optical fibers. The protection layer covers the loose tube. The sheath layer is arranged outside the protection layer. The optical cable is characterized in that: the protection layer and the sheath layer are provided therebetween with an inner protection layer, a nonmetal belt and a transition layer. The inner protection layer covers outside the protection layer. The nonmetal belt is arranged outside the inner protection layer and encloses the inner protection layer. The transition layer is arranged between the nonmetal belt and the sheath layer. The nonmetal belt is composed of a coating layer and a plurality of increasing pieces. The plurality of increasing pieces are arranged in the coating layer in a parallel manner, have no contact among one another, and have axes within the same plane. The invention also discloses a manufacturing method thereof. According to the invention, the optical cable has the following beneficial effects: rapid production speed, easy production, high qualification rate of finished products, low cost, less device investment, and strong universality of the nonmetal belt.
Description
The application is that name is called: a kind of non-metallic optical fiber cables and preparation method thereof, the applying date are: on 06 26th, 2014, application number be: the divisional application of the patent of invention of 201410293929.8.
Technical field
The invention belongs to technical field of cables, especially relate to a kind of non-metallic optical fiber cables that can be anti-lightning strike and preparation method thereof.
Background technology
Non-metallic optical fiber cables due to its not metal-containing material, lightweight, by thunder and lightning interference, construction in or work in do not need ground connection, therefore, enjoy the favor of user；But, existing non-metallic optical fiber cables, in order to reach the requirement of tensile resistence, generally adopts aramid yarn to realize as reinforcement around, owing to aramid yarn is more expensive, have the saying of " soft gold ", therefore this mode considerably increases the cost of optical cable.For this, the domestic substitute for aramid fiber reinforcement has been done substantial amounts of research and has been applied in optical cable.If: publication number is that CN102023359A, name are called: the Chinese patent of a kind of all dielectric central tube type optical cable, including central canal, fiber unit, optical fiber ointment, enhancement Layer and oversheath, fiber unit is located in central canal, optical fiber ointment is filled in the gap between fiber unit and central canal, oversheath is coated on the outside of central canal, enhancement Layer is located between central canal and oversheath, it is characterized in that: described enhancement Layer is fiberglass reinforced plastics band or glass fiber yarn；Also including at least one pair of reinforcement being made up of dielectric material, reinforcement is located in oversheath along the length direction of fiber unit；Owing in its fiberglass reinforced plastics band, reinforcing section is single, production is very unlikely to brake forming, product qualified rate be extremely low and the anti-torsion of optical cable and bending resistance extreme difference, do not reach Industry code requirements.
Publication number is that CN102590967A, name are called: in the patent of a kind of leading in cable, adopts many intensive aspects strengthen and improve withdrawing performance realizing pulling force, is suitable for minor diameter optical cable.
Publication number is that CN102662220A, name are called: the Full-dry optical cable of a kind of pine jacket layer strand and the Chinese patent of manufacture method, the wherein Full-dry optical cable of this pine jacket layer strand, including: cable core, the sheath being set in cable core outer surface, the Loose tube of parcel optical fiber it is provided with in this cable core, two-sided waterstop it is provided with between described cable core and sheath, this two-sided waterstop outer surface spiral winding is surrounded by glass fiber yarn or aramid yarn, is provided with and tears rope inside this glass fiber yarn or aramid yarn；It is provided with water blocking yarn in this Loose tube, this Loose tube and the gap of cable core are provided with water blocking yarn.Full-dry optical cable have employed the dry type material water-proof material of lighter in weight, makes the weight of optical cable significantly be alleviated.Meanwhile, after using the material water-proof material of dry type, workmen has only to just can quickly and very easily by optical fiber take out with shears carry out welding, accelerates construction speed, decreases the use of cleaning consumable goods.It addition, strengthen the intensity of optical cable at the two-sided waterstop wrapped glass fiber yarn of outer surface spiral or aramid yarn；It is also that the mode that have employed aramid yarn or glass fiber yarn realizes, and is that spiral is wrapped, relatively costly, and needs complicated lapping equipment.
Summary of the invention
In order to solve the problems referred to above, it is an object of the invention to disclose a kind of non-metallic optical fiber cables that can be anti-lightning strike, disclose its manufacture method further, they realize by the following technical solutions.
In the present invention the 1st embodiment; a kind of non-metallic optical fiber cables, include be arranged in optical cable central authorities center reinforcement, with outside unidirectional or the stranded centrally disposed reinforcement of bidirectional screw and include many fibre-optic Loose tube, be positioned at the outer gasket for packing of the external series gap of adjacent Loose tube, the protective layer outer gasket for packing and Loose tube enveloped and be positioned at protective layer outside restrictive coating；It is characterized in that having between described protective layer and restrictive coating the non-metallic closed by protective layer, non-metallic by coating, be arranged in coating and arranged in parallel and be not in contact with each other and axis is generally aligned in the same plane many increase parts and constitute；Or non-metallic by coating, be arranged in coating and arranged in parallel and be not in contact with each other and multiple enhancing piece bores that axis is generally aligned in the same plane and many increase parts and constitute, having one in each enhancing piece bores increases part.
In the present invention the 2nd embodiment; a kind of non-metallic optical fiber cables, include be positioned at optical cable central authorities center reinforcement, with the restrictive coating outside unidirectional or the stranded centrally disposed reinforcement of bidirectional screw and outside including many fibre-optic Loose tube, the protective layer enveloped by Loose tube and being positioned at protective layer；It is characterized in that having between described protective layer and restrictive coating the non-metallic closed by protective layer, non-metallic by coating, be arranged in coating and arranged in parallel and be not in contact with each other and axis is generally aligned in the same plane many increase parts and constitute；Or non-metallic by coating, be arranged in coating and arranged in parallel and be not in contact with each other and multiple enhancing piece bores that axis is generally aligned in the same plane and many increase parts and constitute, having one in each enhancing piece bores increases part.
In the present invention the 3rd embodiment; a kind of non-metallic optical fiber cables; include be arranged in optical cable central authorities center reinforcement, with outside unidirectional or the stranded centrally disposed reinforcement of bidirectional screw and include plurality of ribbons Loose tube, be positioned at the outer gasket for packing of the external series gap of adjacent Loose tube, the protective layer outer gasket for packing and Loose tube enveloped and be positioned at protective layer outside restrictive coating, every fibre ribbon has many optical fiberss；It is characterized in that having between described protective layer and restrictive coating sheath and non-metallic; sheath extrusion molding is coated on outside protective layer; non-metallic is closed between sheath and restrictive coating and by sheath, non-metallic by coating, be arranged in coating and arranged in parallel and be not in contact with each other and axis is generally aligned in the same plane many increase parts and constitute；Or non-metallic by coating, be arranged in coating and arranged in parallel and be not in contact with each other and multiple enhancing piece bores that axis is generally aligned in the same plane and many increase parts and constitute, having one in each enhancing piece bores increases part.
In the present invention the 4th embodiment; a kind of non-metallic optical fiber cables, include be arranged in optical cable central authorities center reinforcement, with outside unidirectional or the stranded centrally disposed reinforcement of bidirectional screw and include many fibre-optic Loose tube, be positioned at the outer gasket for packing of the external series gap of adjacent Loose tube, the protective layer outer gasket for packing and Loose tube enveloped and be positioned at protective layer outside restrictive coating；It is characterized in that having between described protective layer and restrictive coating sheath, non-metallic and transition zone; sheath extrusion molding is coated on outside protective layer; non-metallic is positioned at outside sheath and is closed by sheath; transition zone between non-metallic and restrictive coating, non-metallic by coating, be arranged in coating and arranged in parallel and be not in contact with each other and axis is generally aligned in the same plane many increase parts and constitute；Or non-metallic by coating, be arranged in coating and arranged in parallel and be not in contact with each other and multiple enhancing piece bores that axis is generally aligned in the same plane and many increase parts and constitute, having one in each enhancing piece bores increases part.
In the present invention the 5th embodiment; a kind of can be anti-lightning strike non-metallic optical fiber cables, include be positioned at optical cable central authorities center reinforcement, with the restrictive coating outside unidirectional or the stranded centrally disposed reinforcement of bidirectional screw and outside including many fibre-optic Loose tube, the protective layer enveloped by Loose tube and being positioned at protective layer；It is characterized in that having between described protective layer and restrictive coating sheath, non-metallic and transition zone; sheath extrusion molding is coated on outside protective layer; non-metallic is positioned at outside sheath and is closed by sheath; transition zone between non-metallic and restrictive coating, non-metallic by coating, be arranged in coating and arranged in parallel and be not in contact with each other and axis is generally aligned in the same plane many increase parts and constitute；Or non-metallic by coating, be arranged in coating and arranged in parallel and be not in contact with each other and multiple enhancing piece bores that axis is generally aligned in the same plane and many increase parts and constitute, having one in each enhancing piece bores increases part.
In the present invention the 6th embodiment; a kind of non-metallic optical fiber cables; include be arranged in optical cable central authorities center reinforcement, with outside unidirectional or the stranded centrally disposed reinforcement of bidirectional screw and include plurality of ribbons Loose tube, be positioned at the outer gasket for packing of the external series gap of adjacent Loose tube, the protective layer outer gasket for packing and Loose tube enveloped and be positioned at protective layer outside restrictive coating, every fibre ribbon has many optical fiberss；It is characterized in that having between described protective layer and restrictive coating sheath, non-metallic and transition zone; sheath extrusion molding is coated on outside protective layer; non-metallic is positioned at outside sheath and is closed by sheath; transition zone between non-metallic and restrictive coating, non-metallic by coating, be arranged in coating and arranged in parallel and be not in contact with each other and axis is generally aligned in the same plane many increase parts and constitute；Or non-metallic by coating, be arranged in coating and arranged in parallel and be not in contact with each other and multiple enhancing piece bores that axis is generally aligned in the same plane and many increase parts and constitute, having one in each enhancing piece bores increases part.
In the present invention the 7th embodiment, a kind of non-metallic optical fiber cables, substantially with embodiment 6, it is different in that the outer extrusion molding of restrictive coating is coated with external protection.
Therefore, the present invention has following main beneficial effect: speed of production faster, be more easy to that production, product qualified rate are higher, lower in cost, equipment investment less, the versatility of non-metallic is higher.
Accompanying drawing explanation
Fig. 1 is the perspective view of a section that increases part in the non-metallic used in the present invention.
Fig. 2 is the perspective view that the non-metallic used in the present invention removes a section after increasing part.
Fig. 3 is the perspective view of a section of the non-metallic used in the present invention.
Fig. 4 is the perspective view of a section of the invention process example 1.
Fig. 5 is Fig. 4 cross-sectional structure schematic diagram amplified.
Fig. 6 is the perspective view of a section of the invention process example 2.
Fig. 7 is Fig. 6 cross-sectional structure schematic diagram amplified.
Fig. 8 is the perspective view of a section of the invention process example 3.
Fig. 9 is Fig. 8 cross-sectional structure schematic diagram amplified.
Figure 10 is the cross-sectional structure schematic diagram of the invention process example 4.
Figure 11 is the cross-sectional structure schematic diagram of the invention process example 5.
Figure 12 is the cross-sectional structure schematic diagram of the invention process example 6.
Figure 13 is the cross-sectional structure schematic diagram of the invention process example 7.
Detailed description of the invention
Embodiment 1
Ask for an interview Fig. 1 to Fig. 5; a kind of non-metallic optical fiber cables, include be arranged in optical cable central authorities center reinforcement 4, with outside unidirectional or the stranded centrally disposed reinforcement of bidirectional screw and include 12 optical fiberss 24 Loose tube 3, be positioned at the outer gasket for packing 5 of the external series gap of adjacent Loose tube, the protective layer 6 outer gasket for packing and Loose tube enveloped and be positioned at protective layer outside restrictive coating 7；It is characterized in that having between described protective layer and restrictive coating the non-metallic 1 closed by protective layer, non-metallic by coating 13, be arranged in coating and arranged in parallel and be not in contact with each other and axis is generally aligned in the same plane 8 increase parts 11 and constitute；Or non-metallic by coating 13, be arranged in coating and arranged in parallel and be not in contact with each other and multiple enhancing piece bores 12 that axis is generally aligned in the same plane and many increase parts 11 and constitute, having one in each enhancing piece bores increases part.
A kind of non-metallic optical fiber cables described above, it is characterised in that the optical fibers in described Loose tube also can be other many, but at least has one.
In Fig. 2, visible enhancing piece bores is 4, it is possible to multiple for other, has done omission during picture；Reinforcement in Fig. 3 is 4, it is possible to for other many, done omission during picture.
Embodiment 2
Ask for an interview Fig. 6 and Fig. 7; and referring to figs. 1 to Fig. 3; a kind of non-metallic optical fiber cables, include be positioned at optical cable central authorities center reinforcement 4, with the restrictive coating 7 outside unidirectional or the stranded centrally disposed reinforcement of bidirectional screw and outside including 6 Loose tube 3 of 4 optical fiberss 2, the protective layer 6 enveloped by Loose tube and being positioned at protective layer；It is characterized in that having between described protective layer and restrictive coating the non-metallic 1 closed by protective layer, non-metallic by coating 13, be arranged in coating and arranged in parallel and be not in contact with each other and axis is generally aligned in the same plane 8 increase parts 11 and constitute；Or non-metallic by coating 13, be arranged in coating and arranged in parallel and be not in contact with each other and multiple enhancing piece bores 12 that axis is generally aligned in the same plane and many increase parts 11 and constitute, having one in each enhancing piece bores increases part.
A kind of non-metallic optical fiber cables described above, it is characterised in that the optical fibers in described Loose tube also can be other many, but at least has one.
Embodiment 3
Ask for an interview Fig. 8 and Fig. 9; and referring to figs. 1 to Fig. 3; a kind of non-metallic optical fiber cables; include be arranged in optical cable central authorities center reinforcement 4, with outside unidirectional or the stranded centrally disposed reinforcement of bidirectional screw and include 4 fibre ribbons 21 3 Loose tube 3, be positioned at the outer gasket for packing 5 of the external series gap of adjacent Loose tube, the protective layer 6 outer gasket for packing and Loose tube enveloped and be positioned at protective layer outside restrictive coating 7, every fibre ribbon has 4 optical fiberss 2；It is characterized in that there is between described protective layer and restrictive coating sheath 8 and non-metallic 1; sheath extrusion molding is coated on outside protective layer; non-metallic is closed between sheath and restrictive coating and by sheath, non-metallic by coating 13, be arranged in coating and arranged in parallel and be not in contact with each other and axis is generally aligned in the same plane 12 increase parts 11 and constitute；Or non-metallic by coating 13, be arranged in coating and arranged in parallel and be not in contact with each other and multiple enhancing piece bores 12 that axis is generally aligned in the same plane and many increase parts 11 and constitute, having one in each enhancing piece bores increases part.
A kind of non-metallic optical fiber cables described above, it is characterised in that the fibre ribbon in described Loose tube also can be other many, but at least has one.
A kind of non-metallic optical fiber cables described above, it is characterised in that the optical fibers in described fibre ribbon also can be other many, but at least has one.
Certainly, in this embodiment, completely can without gasket for packing as embodiment 2.
Embodiment 4
Ask for an interview Figure 10; and referring to figs. 1 to Fig. 5; a kind of non-metallic optical fiber cables, include be arranged in optical cable central authorities center reinforcement 4, with outside unidirectional or the stranded centrally disposed reinforcement of bidirectional screw and include 12 optical fiberss 24 Loose tube 3, be positioned at the outer gasket for packing 5 of the external series gap of adjacent Loose tube, the protective layer 6 outer gasket for packing and Loose tube enveloped and be positioned at protective layer outside restrictive coating 7；It is characterized in that there is between described protective layer and restrictive coating sheath 8, non-metallic 1 and transition zone 9; sheath extrusion molding is coated on outside protective layer; non-metallic is positioned at outside sheath and is closed by sheath; transition zone between non-metallic and restrictive coating, non-metallic by coating 13, be arranged in coating and arranged in parallel and be not in contact with each other and axis is generally aligned in the same plane 8 increase parts 11 and constitute；Or non-metallic by coating 13, be arranged in coating and arranged in parallel and be not in contact with each other and multiple enhancing piece bores 12 that axis is generally aligned in the same plane and many increase parts 11 and constitute, having one in each enhancing piece bores increases part.
A kind of non-metallic optical fiber cables described above, it is characterised in that the optical fibers in described Loose tube also can be other many, but at least has one.
Embodiment 5
Ask for an interview Figure 11; and referring to figs. 1 to Fig. 3 and Fig. 6 and Fig. 7; a kind of can be anti-lightning strike non-metallic optical fiber cables, include be positioned at optical cable central authorities center reinforcement 4, with the restrictive coating 7 outside unidirectional or the stranded centrally disposed reinforcement of bidirectional screw and outside including 6 Loose tube 3 of 4 optical fiberss 2, the protective layer 6 enveloped by Loose tube and being positioned at protective layer；It is characterized in that there is between described protective layer and restrictive coating sheath 8, non-metallic 1 and transition zone 9; sheath extrusion molding is coated on outside protective layer; non-metallic is positioned at outside sheath and is closed by sheath; transition zone between non-metallic and restrictive coating, non-metallic by coating 13, be arranged in coating and arranged in parallel and be not in contact with each other and axis is generally aligned in the same plane 8 increase parts 11 and constitute；Or non-metallic by coating 13, be arranged in coating and arranged in parallel and be not in contact with each other and multiple enhancing piece bores 12 that axis is generally aligned in the same plane and many increase parts 11 and constitute, having one in each enhancing piece bores increases part.
Described above a kind of can be anti-lightning strike non-metallic optical fiber cables, it is characterised in that the optical fibers in described Loose tube also can be other many, but at least has one.
Described above a kind of can be anti-lightning strike non-metallic optical fiber cables, it is characterised in that described increase part also can be other many.
Embodiment 6
Ask for an interview Figure 12; and referring to figs. 1 to Fig. 3 and Fig. 8 and Fig. 9; a kind of non-metallic optical fiber cables; include be arranged in optical cable central authorities center reinforcement 4, with outside unidirectional or the stranded centrally disposed reinforcement of bidirectional screw and include 4 fibre ribbons 21 3 Loose tube 3, be positioned at the outer gasket for packing 5 of the external series gap of adjacent Loose tube, the protective layer 6 outer gasket for packing and Loose tube enveloped and be positioned at protective layer outside restrictive coating 7, every fibre ribbon has 4 optical fiberss 2；It is characterized in that there is between described protective layer and restrictive coating sheath 8, non-metallic 1 and transition zone 9; sheath extrusion molding is coated on outside protective layer; non-metallic is positioned at outside sheath and is closed by sheath; transition zone between non-metallic and restrictive coating, non-metallic by coating 13, be arranged in coating and arranged in parallel and be not in contact with each other and axis is generally aligned in the same plane 12 increase parts 11 and constitute；Or non-metallic by coating 13, be arranged in coating and arranged in parallel and be not in contact with each other and multiple enhancing piece bores 12 that axis is generally aligned in the same plane and many increase parts 11 and constitute, having one in each enhancing piece bores increases part.
A kind of non-metallic optical fiber cables described above, it is characterised in that the fibre ribbon in described Loose tube also can be other many, but at least has one.
A kind of non-metallic optical fiber cables described above, it is characterised in that the optical fibers in described fibre ribbon also can be other many, but at least has one.
Embodiment 7
Ask for an interview Figure 13, and referring to figs. 1 to Fig. 3 and Fig. 8 and Fig. 9 and Figure 12, a kind of non-metallic optical fiber cables, substantially with embodiment 6, it is different in that: the outer extrusion molding of restrictive coating is coated with external protection 91.
The material of described external protection is preferably nylon rodent-proof material, and model is NL12, NL6 such as, i.e. nylon 12, nylon 6 etc..
Following described non-metallic optical fiber cables, be equally applicable to can be anti-lightning strike non-metallic optical fiber cables.
A kind of non-metallic optical fiber cables described in any of the above-described embodiment, it is characterised in that described increase part also can be other many.
A kind of non-metallic optical fiber cables described in any of the above-described embodiment, it is characterised in that in described Loose tube, at least one have root to be replaced by solid packing elements, and packing elements is identical with the diameter of Loose tube.
A kind of non-metallic optical fiber cables described in any of the above-described embodiment, it is characterised in that the diameter of described Loose tube is the same.
A kind of non-metallic optical fiber cables described in any of the above-described embodiment, it is characterised in that the material of described center reinforcement is that glass fibre increases plastic bar.
A kind of non-metallic optical fiber cables described in any of the above-described embodiment, it is characterised in that described optical fibers is G.652 optical fiber or G.653 optical fiber or G.654 optical fiber or G.655 optical fiber or G.657 optical fiber or OM1 optical fiber or OM2 optical fiber or OM3 optical fiber or energy transmission optical fibre.
A kind of non-metallic optical fiber cables described in any of the above-described embodiment, it is characterised in that the material of described Loose tube is polybutylene terephthalate (PBT) or modified polypropene.
A kind of non-metallic optical fiber cables described in any of the above-described embodiment, it is characterised in that the material of described outer gasket for packing is polyethylene or polypropylene.
A kind of non-metallic optical fiber cables described in any of the above-described embodiment, it is characterised in that the material of described protective layer is polyester band or waterstop or non-woven fabrics.
A kind of non-metallic optical fiber cables described in any of the above-described embodiment, it is characterised in that the material of described restrictive coating is Low Density Polyethylene or medium density polyethylene or high density polyethylene (HDPE) or flame-proof polyethylene or low smoke and zero halogen polyethylene.
A kind of non-metallic optical fiber cables described in any of the above-described embodiment, it is characterised in that the material of described sheath is Low Density Polyethylene or medium density polyethylene or high density polyethylene (HDPE) or flame-proof polyethylene or low smoke and zero halogen polyethylene.
In a kind of non-metallic optical fiber cables described in above-mentioned embodiment 4 to embodiment 6, it is characterised in that the material of described transition zone is polyester band or waterstop, transition zone thickness be 0.1～0.5mm；Transition zone have excellent block water, waterproof action, it is possible to effectively protection optical fibers from or slow down hydrionic erosion in water, make optical fiber longer service life.
A kind of non-metallic optical fiber cables described in any of the above-described embodiment, it is characterised in that described Loose tube is preferably tangent with center reinforcement；When having outer gasket for packing, outer gasket for packing is preferably tangent with adjacent Loose tube and protective layer；Yarn etc. can be pricked by yarn class material such as polyester outside Loose tube to be wrapped up by many Loose tube so that it is structure is more stable；When there being outer gasket for packing, it is possible to prick yarn etc. by yarn class material such as polyester and many Loose tube, outer gasket for packing are wrapped up together so that it is structure is more stable.
A kind of non-metallic optical fiber cables described in any of the above-described embodiment, it is characterised in that described enhancing piece bores is preferably cuboid, it is of course also possible to be other shape, as long as reinforcement can be held, and and does not have too much gap between reinforcement.
A kind of non-metallic optical fiber cables described in any of the above-described embodiment, it is characterised in that can also fill such as the material that blocks water of the classes such as greasy for preventing water, water-proofing powder, water blocking yarn in the gap of described Loose tube.
A kind of non-metallic optical fiber cables described in any of the above-described embodiment, it is characterised in that can also fill such as the material that blocks water of the classes such as greasy for preventing water, water-proofing powder, water blocking yarn in the gap within described protective layer；Can also place and tear rope for stripping fiber optic cables.
A kind of non-metallic optical fiber cables described in any of the above-described embodiment, it is characterised in that the material of described coating is Low Density Polyethylene or medium density polyethylene or high density polyethylene (HDPE) or flame-proof polyethylene or low smoke and zero halogen polyethylene；The material of coating and the material of sheath are identical；When not having external protection, the material of coating and the material of restrictive coating are identical.
A kind of non-metallic optical fiber cables described in any of the above-described embodiment, it is characterized in that described increase part by weight, comprise following raw material: polyvinyl resin 20～30 parts, acrylic resin 8～15 parts, model are JF-31 or JF-33 or JF-35 or JF-C superhigh molecular weight polyethylene fibers 30～50 parts, length is the glass fiber yarn 20～40 parts of 0.01mm～1.2mm, EVA hot-melt adhesive 5～10 parts；It is called regular convention formula in the following description.
Described increase part by weight, can reach the performance of optimum through test when comprising following raw material: polyvinyl resin 25 parts, acrylic resin 11 parts, model are JF-31 or JF-33 or JF-35 or JF-C superhigh molecular weight polyethylene fibers 40 parts, length is the glass fiber yarn 30 parts of 0.01mm～1.2mm, EVA hot-melt adhesive 8 parts；It is called optimization formula in the following description.
Model described above is JF-31 or JF-33 or JF-35 or JF-C superhigh molecular weight polyethylene fibers, is commercially available prod, and from Jiangsu clanging or clanking sound Nima new material company limited etc., other is commercially available.
Non-metallic in the present invention prepares by the following method: first weigh each raw material increasing part by weight；Then each raw material increasing part is added in mixing roll and be heated to 180～250 DEG C of mixture carrying out being mixed and stirred for uniformly obtaining thickness；The mixture of thickness is added the shape increasing part being extruded into needs in extruding machine again and fixed but sizing obtains increasing part；Then many are increased the part enhancing hole through the mould on extrusion head, melted Low Density Polyethylene or medium density polyethylene or high density polyethylene (HDPE) or flame-proof polyethylene or low smoke and zero halogen polyethylene are coated on many reinforcements formation coating by the mode of extrusion molding, namely define non-metallic.
Certainly, the non-metallic in the present invention can also be by what following methods prepared: first weighs each raw material increasing part by weight；Then each raw material increasing part is added in mixing roll and be heated to 180～250 DEG C of mixture carrying out being mixed and stirred for uniformly obtaining thickness；The mixture of thickness is added the shape increasing part being extruded into needs in extruding machine again and fixed but sizing obtains increasing part；By mode extrusion molding by extrusion molding of melted Low Density Polyethylene or medium density polyethylene or high density polyethylene (HDPE) or flame-proof polyethylene or low smoke and zero halogen polyethylene and be cooled into coating and strengthen piece bores, mould on extrusion head has multiple parallel enhancing hole, strengthens hole and be not in contact with each other and in axis is generally aligned in the same plane；When producing optical cable, increase part is inserted in enhancing piece bores.
Non-metallic in the present invention obtains data below through test:
Adopt the optical cable of the embodiment 1-7 that above-mentioned non-metallic produces, all reach desirable tension force value, do not need the stranded equipment of aramid yarn or glass fiber yarn, flexible and production optical cable the product qualified rate of optical cable reaches 99.85%, optical cable is through alternating bending, torsion test, it is attained by country and the industry standard of optical cable industry, the cost of optical cable adopts aramid yarn or glass fiber yarn to reduce about 25% as the optical cable of outer reinforcement relatively, and speed of production accelerates more than 50%, therefore, the present invention has obvious beneficial effect.
The manufacture method of a kind of non-metallic optical fiber cables, it is characterised in that comprise the steps of
The first step: form the step of cable core: cable core comprises cable core body or comprises cable core body and be coated on, by extrusion molding, the sheath that cable core is external；Take center reinforcement, include many fibre-optic many Loose tube, many outer gasket for packings; by parallel for many Loose tube be centrally disposed outside reinforcement or in the way of one-way spiral or bidirectional screw stranded around center reinforcement; many outer gasket for packings are placed in the external series gap of adjacent Loose tube, form cable core body at the outer gasket for packing outer cladding protective layer of many Loose tube and many；Or take center reinforcement, the fibre-optic many Loose tube that include many; by parallel for many Loose tube be centrally disposed outside reinforcement or in the way of one-way spiral or bidirectional screw stranded around center reinforcement, form cable core bodies at many Loose tube outer cladding protective layers；Or take center reinforcement, include many Loose tube of plurality of ribbons, many outer gasket for packings; by parallel for many Loose tube be centrally disposed outside reinforcement or in the way of one-way spiral or bidirectional screw stranded around center reinforcement; many outer gasket for packings are placed in the external series gap of adjacent Loose tube; form cable core body at the outer gasket for packing outer cladding protective layer of many Loose tube and many, every fibre ribbon comprises many optical fiberss；Or take center reinforcement, include many Loose tube of plurality of ribbons; by parallel for many Loose tube be centrally disposed outside reinforcement or in the way of one-way spiral or bidirectional screw stranded around center reinforcement; form cable core body at many Loose tube outer cladding protective layers, every fibre ribbon comprises many optical fiberss；
Second step: cladding non-metallic forms half-finished step: negated metal tape carries out being coated with and make outside cable core outside the cable core described in the first step by the longitudinally mode of cladding and is closed formation semi-finished product, described non-metallic by coating, be arranged in coating and arranged in parallel and be not in contact with each other and axis is generally aligned in the same plane many increase parts and constitute；Or negated metal tape carries out being coated with and make outside cable core outside the cable core described in the first step by the longitudinally mode of cladding and is closed formation semi-finished product, described non-metallic by coating, be arranged in coating and arranged in parallel and be not in contact with each other and multiple enhancing piece bores that axis is generally aligned in the same plane, and take many increase parts insert enhancing piece bores in, each enhancing piece bores is only inserted one and increases part, when increase part being inserted enhancing piece bores, make in the scope that the temperature of coating is maintained at 50～80 DEG C；
3rd step: form the step of finished cable: the semi-finished product in second step through the core rod hole of extruding machine and are extruded upper jacket layer outside semi-finished product namely form finished cable；Or the semi-finished product in second step through the core rod hole of extruding machine and are extruded transition zone outside semi-finished product, then on transition zone, extrudes restrictive coating namely form finished cable；Or the semi-finished product in second step through the core rod hole of extruding machine and are extruded transition zone outside semi-finished product, then on transition zone, extrudes external protection, then on external protection, extrude restrictive coating namely form finished cable；
nullWherein，The material of described external protection is nylon rodent-proof material，The material of center reinforcement is that glass fibre increases plastic bar，Optical fibers is G.652 optical fiber or G.653 optical fiber or G.654 optical fiber or G.655 optical fiber or G.657 optical fiber or OM1 optical fiber or OM2 optical fiber or OM3 optical fiber or energy transmission optical fibre，The material of Loose tube is polybutylene terephthalate (PBT) or modified polypropene，The material of outer gasket for packing is polyethylene or polypropylene，The material of protective layer is polyester band or waterstop or non-woven fabrics，The material of restrictive coating is Low Density Polyethylene or medium density polyethylene or high density polyethylene (HDPE) or flame-proof polyethylene or low smoke and zero halogen polyethylene，The material of sheath is Low Density Polyethylene or medium density polyethylene or high density polyethylene (HDPE) or flame-proof polyethylene or low smoke and zero halogen polyethylene，The material of transition zone is polyester band or waterstop，Transition zone thickness be 0.1～0.5mm；Increase part by weight, comprise following raw material: polyvinyl resin 20～30 parts, acrylic resin 8～15 parts, model are JF-31 or JF-33 or JF-35 or JF-C superhigh molecular weight polyethylene fibers 30～50 parts, length is the glass fiber yarn 20～40 parts of 0.01mm～1.2mm, EVA hot-melt adhesive 5～10 parts.
In the present invention, protective layer and sheath have primarily served and have blocked water and the effect of protecting against shock；Sheath separately also acts the effect of adjustment; for the non-metallic produced; due to its length, width, highly determine that, therefore, for having the optical cable of different protective layer diameters; need different non-metallic; and be provided with sheath, due to its thickness can flexible, therefore; wider non-metallic can be adopted, it is not necessary to additionally buying and customization.
Therefore, the present invention has following main beneficial effect: speed of production faster, be more easy to that production, product qualified rate are higher, lower in cost, equipment investment less, the versatility of non-metallic is higher.
The present invention is not limited to above-mentioned preferred forms, it will be appreciated that the design of the present invention can be implemented to use by other various forms, and they also fall within protection scope of the present invention.
Claims (8)
1. a non-metallic optical fiber cables that can be anti-lightning strike, include be positioned at optical cable central authorities center reinforcement, with the restrictive coating outside unidirectional or the stranded centrally disposed reinforcement of bidirectional screw and outside including many fibre-optic Loose tube, the protective layer enveloped by Loose tube and being positioned at protective layer；It is characterized in that having between described protective layer and restrictive coating sheath, non-metallic and transition zone; sheath extrusion molding is coated on outside protective layer; non-metallic is positioned at outside sheath and is closed by sheath; transition zone between non-metallic and restrictive coating, non-metallic by coating, be arranged in coating and arranged in parallel and be not in contact with each other and axis is generally aligned in the same plane many increase parts and constitute；Or non-metallic by coating, be arranged in coating and arranged in parallel and be not in contact with each other and multiple enhancing piece bores that axis is generally aligned in the same plane and many increase parts and constitute, having one in each enhancing piece bores increases part；Described increase part by weight, comprises following raw material: polyvinyl resin 20～30 parts, acrylic resin 8～15 parts, model are JF-31 or JF-33 or JF-35 or JF-C superhigh molecular weight polyethylene fibers 30～50 parts, length is the glass fiber yarn 20～40 parts of 0.01mm～1.2mm, EVA hot-melt adhesive 5～10 parts.
2. according to claim 1 a kind of can be anti-lightning strike non-metallic optical fiber cables, it is characterised in that the material of described center reinforcement be glass fibre increase plastic bar.
3. according to claim 2 a kind of can be anti-lightning strike non-metallic optical fiber cables, it is characterised in that described optical fibers is G.652 optical fiber or G.653 optical fiber or G.654 optical fiber or G.655 optical fiber or G.657 optical fiber or OM1 optical fiber or OM2 optical fiber or OM3 optical fiber or energy transmission optical fibre.
4. according to claim 3 a kind of can be anti-lightning strike non-metallic optical fiber cables, it is characterised in that the material of described Loose tube is polybutylene terephthalate (PBT) or modified polypropene.
5. according to claim 4 a kind of can be anti-lightning strike non-metallic optical fiber cables, it is characterised in that the material of described protective layer is polyester band or waterstop or non-woven fabrics.
6. according to claim 5 a kind of can be anti-lightning strike non-metallic optical fiber cables, it is characterised in that the material of described restrictive coating is Low Density Polyethylene or medium density polyethylene or high density polyethylene (HDPE) or flame-proof polyethylene or low smoke and zero halogen polyethylene.
7. the non-metallic optical fiber cables that a kind of according to claim 1 to claim 6 any one can be anti-lightning strike, it is characterised in that the material of described sheath is Low Density Polyethylene or medium density polyethylene or high density polyethylene (HDPE) or flame-proof polyethylene or low smoke and zero halogen polyethylene.
8. according to claim 7 a kind of can be anti-lightning strike non-metallic optical fiber cables, the material of described coating is Low Density Polyethylene or medium density polyethylene or high density polyethylene (HDPE) or flame-proof polyethylene or low smoke and zero halogen polyethylene；The material of coating and the material of sheath are identical.
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| CN201410293929.8A CN104020544B (en) | 2014-06-26 | 2014-06-26 | Non-metallic cable and manufacturing method thereof |
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| US7242831B2 (en) * | 2004-02-27 | 2007-07-10 | Verizon Business Global Llc | Low strain optical fiber cable |
| KR20100000036A (en) * | 2008-06-24 | 2010-01-06 | 엘에스전선 주식회사 | Optical fiber cable |
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Effective date of registration: 20181113 Address after: 412000 Hunan, Zhuzhou, Shandong Province Applicant after: HUNAN SHENTONG OPTOELECTRONIC TECHNOLOGY Co.,Ltd. Address before: 214206 room 404, 144 village, South Cang village, Yicheng street, Yixing, Wuxi, Jiangsu Applicant before: Yin Hong |
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