CN203385911U - High-count miniature fireproof optical cable for communication - Google Patents
High-count miniature fireproof optical cable for communication Download PDFInfo
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- CN203385911U CN203385911U CN201320479524.4U CN201320479524U CN203385911U CN 203385911 U CN203385911 U CN 203385911U CN 201320479524 U CN201320479524 U CN 201320479524U CN 203385911 U CN203385911 U CN 203385911U
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Abstract
The utility model relates to a high-count miniature fireproof optical cable for communication, and belongs to the technical field of photo-communication optical cable manufacture. The high-count miniature fireproof optical cable is a data communication optical cable and is suitable for indoor building inside vertical and horizontal cabling, subway inside cabling and central equipment room inside cabling, and connecting lines in multi-core jumper wires and transmission equipment. The high-count miniature fireproof optical cable has the advantages of being large in core number, small in external diameter, high in tensile strength, and fireproof and flame- retardation. The high-count miniature fireproof optical cable is composed of multicore tightly-buffered fiber microbeam units, a reinforcement member, an inner sheath, a fireproof gold mica tape, a stainless steel wire braided layer and an outer sheath. The multicore tightly-buffered fiber microbeam units are stranded. A reinforcement piece which is reinforced by high-strength aramid is utilized in a strand layer of the multicore tightly-buffered fiber microbeam unit. The reinforcement piece externally extrudes and encapsulates the inner sheath. The inner sheath is externally wrapped with the fireproof gold mica tape. A wrapping layer is then externally braided with stainless steel wires, and thus the stainless steel wire braided layer is formed. The gold mica tape and the stainless steel wire braided layer are externally extruded and encapsulated with the outer sheath.
Description
Technical field
The utility model relates to the miniature flame-proof cable of large core number for a kind of communication, belong to optical communication fiber optic cable manufacture technical field, it is a kind of data communication optical cable, be applicable to wiring in wiring in vertical-horizontal wiring, subway, central machine room in indoor building, connecting line etc. in Multi-core number wire jumper, transmission equipment; The type optical cable has that the core number is large, external diameter is little, tensile strength is high, the fire resistant flame retardant characteristics.
Background technology
Along with the business demand of supervision, control and communication system rapidly increases, the inside cable demand is also increasing, require also more and more higher, the inside cable of the large external diameter of little core number has been difficult to meet the demands, and along with the frequent generation of various accidents and disaster, inside cable is usually played the part of again the role of ignition fuse simultaneously, fire is rapidly spread, and damaging valuable electronic device and equipment, the normal operation that affects whole circuit is even paralysed, thereby has enlarged the loss of disaster; Inside cable is generally single core tightly packaged fiber at present, for inside cable production in the above-mentioned background technology.
For this reason, the core number is large, external diameter is little, fire resistant flame retardant, high-performance inside cable will become future developing trend.
Summary of the invention
The utility model purpose is little for inside cable production core number in the above-mentioned background technology, external diameter is large, do not possess fire resistant flame retardant performance weak point, the miniature flame-proof cable of large core number for a kind of communication provided, by the single core tightly packaged fiber technological transformation by conventional, it is multicore tightly packaged fiber microbeam unit, then many microbeam unit are stranded, adopt the high strength aramid fiber to strengthen, with refractory gold mica tape, carry out wrapped, oversheath adopts low-smoke halogen-free flame-retardant sheath, can address the above problem fully, the utility model is widely used in each emporium, computer center, communication information center etc.
The utility model communication is to take following technical scheme to realize with the miniature flame-proof cable of large core number:
Communication is comprised of multicore tightly packaged fiber microbeam unit, reinforcement, inner sheath, refractory gold mica tape, stainless steel wire braided wires layer, oversheath with the miniature flame-proof cable of large core number.Multicore hard-pressed bale microbeam unit is stranded, multicore hard-pressed bale microbeam unit stranded layer adopts the high strength aramid fiber to strengthen making reinforcement outward, the outer extrusion molding of reinforcement is sealed inner sheath, inner sheath carries out wrapped with refractory gold mica tape outward again, lapping layer weaves in order to stainless steel wire outward again, form stainless steel wire braided wires layer, outside refractory gold mica tape, stainless steel wire braid, extrusion molding is sealed oversheath.
Multicore tightly packaged fiber microbeam unit can adopt 24, every 12 core tightly packaged fiber microbeam unit.
12 cores be take as example in multicore tightly packaged fiber microbeam unit, and 12 core multicore hard-pressed bale unit adopt fire retardant polyolefin to carry out the extrusion molding sheath by 12 colored optical fiber outsides and form.The following multicore hard-pressed bale microbeam of concrete structure technical parameter unit makes.
The inside cable tightly packaged fiber generally is single core tightly packaged fiber, can not meet high fiber count cable production, this invention technical scheme is by changing tightly packaged fiber into multicore by single core, be made into multicore hard-pressed bale microbeam unit, adopt multicore hard-pressed bale microbeam unit can greatly improve Cable Core Number, reduce cable outer diameter simultaneously; Microbeam unit core number can be 2,4,6,8,12 and does not wait, and many multicore hard-pressed bale microbeam unit are stranded, adopts the high strength aramid fiber to make the inner sheath unit as reinforcement, then with refractory gold mica tape, carry out wrapped, the stainless steel wire braiding.Refractory gold mica tape has good refractability, can stop propagation of flame, suppresses generation and the release of smog, has guaranteed that optical cable maintains normal operation in enough time, avoids causing great harm, adopts low-smoke halogen-free material extrusion molding oversheath after wrapped braiding.
Communicate by letter as follows by the miniature flame-proof cable method for making of large core number:
1, multicore hard-pressed bale microbeam unit makes
Be ready to the multi-core fiber pay off rack, each optical fiber pay off rack laying tension is regulated to test, the optical fiber laying tension is adjusted to 0.8N-1N, each optical fiber laying tension need be guaranteed unanimously;
Choose extruded mould and carry out extrusion molding outside the multicore tightly packaged fiber, multicore tightly packaged fiber protective cover material adopts low-smoke halogen-free material, regulate the sheath external diameter with wall thickness, multicore tightly packaged fiber micro unit external diameter is adjusted to 0.9mm～1.4mm, wall thickness 0.15mm～0.25mm, extrusion temperature is 145～175 ℃, makes multicore hard-pressed bale microbeam unit.
2, the inner sheath unit produces
Test multicore cage pay off rack tension force, be 1.5N-2N by cage pay off rack tension adjustment, and the cage pay off rack, according to color sequences, is loaded onto to, from tracked by guide wheel to head in polydisc multicore hard-pressed bale microbeam unit;
Install the aramid fiber reinforcement, the aramid fiber twisting pitch is modulated to 350-450mm;
Installed extruded mould, this structure optical cable adopts tubular molding tool, and the stranded rear external diameter in multicore hard-pressed bale microbeam unit is 3.2～7.95mm, and adding the stranded rear external diameter of aramid fiber is 3.5～8.25mm, and the inner sheath external diameter is designed to 5.8～10.4mm, wall thickness 0.6～0.8mm; According to stranded external diameter, sheath external diameter wall thickness calculates the core rod external diameter and adopts 4.6～9.3mm, and the die sleeve internal diameter adopts 8.3～12.9mm;
Regulate the sheath extrusion temperature: inner sheath adopts low-smoke and halogen-free flame retardant polyolefin jacket, the extruding machine temperature range is controlled is 130～170 ℃, regulate extrusion molding speed, extrusion molding speed is 30～35, follow the circular inner sheath of aramid fiber reinforcement outer cladding last layer in multicore hard-pressed bale microbeam unit by extruded mould, the inner sheath external diameter is controlled to 5.8～10.4mm, wall thickness 0.6～0.8mm, cooling through twice of hot water storgae, cold rinse bank, the hot water storgae temperature is controlled at 45～60 ℃, and the cold rinse bank temperature is controlled at 19～25 ℃;
Refractory gold mica tape is wrapped, the stainless steel wire braiding: according to the inner sheath external diameter, wrapped overlap joint is controlled as 10～15% of twining package tape width, calculate that to adopt specification to be that the 30-32mm mica tape carries out wrapped the most suitable, carrying out when wrapped, controlling wrapped tension force well, wrapped Tension design is 3-7N; Mica tape adopts the braiding of diameter 0.07mm stainless steel wire outward, forms the stainless steel wire braid.
3, oversheath production
Oversheath adopts high performance low smoke halogen-free flameproof material, has low cigarette, low toxicity, and low corrosion, the excellent properties such as high flame retardant,
Inner sheath is through Mica tape, after the stainless steel wire braiding, external diameter is 6.4mm～11.0mm, the oversheath external diameter is designed to 8.4mm～14.0mm, wall thickness 1.0mm～1.5mm is according to wrapped external diameter, the oversheath external diameter is chosen mould, mould is selected tubular molding tool, core rod external diameter 7.4mm～12mm, die sleeve internal diameter 10.9mm～16.8mm;
Install mould, the low-smoke halogen-free material extrusion temperature is controlled to 135～168 ℃, regulates mould with extrusion molding speed, extrusion molding speed is 25～30, external diameter is regulated, extrude high performance low smoke halogen-free flameproof material outside mica tape, stainless steel wire braid, form oversheath, cooling through twice of hot water storgae, cold rinse bank, the hot water storgae temperature is controlled at 45～60 ℃, the cold rinse bank temperature is controlled at 19～25 ℃, through drawing upper dish, makes the miniature flame-proof cable of large core number for communication.
The miniature flame-proof cable of large core number and preparation method thereof beneficial effect for communication:
1) adopt multicore tightly packaged fiber microbeam unit, the technological transformation of the single core tightly packaged fiber of the original routine of size young pathbreaker becomes the multicore tightly packaged fiber, has greatly improved fiber number;
2) adopt refractory gold mica tape wrapped, there is good fire prevention, fire performance, stoped spreading of flame, reduced loss;
3) adopt the stainless steel wire braiding; stainless steel wire can be high temperature resistant can embrittlement in the time of 750 ℃; during burning, flame directly contacts with steel wire braid; to the inside mica tape with in protect unit and play a buffer protection function; when cooling, steel wire braid also has insulation effect and avoids the inside optical fiber suddenly cooling simultaneously.Adopt in addition braided steel wire to improve the cable machinery performance, guarantee that optical cable is not damaged in severe service condition;
4) the compact external diameter of this cable configuration is little, and the core number is large, has greatly saved the cost of raw material, compares same core and counts optical cable and adopt the external diameter of single core tightly packaged fiber structure to descend 70%;
5) this structure optical cable, compare original single core hard-pressed bale structure fabrication operation easier;
6) this optical cable has good bending property;
7) this optical cable construction is convenient, dry type structure, constructability, clean and safe.
The accompanying drawing explanation
Below with reference to accompanying drawing, the utility model is described in further detail:
Fig. 1 communicates by letter by the multicore tightly packaged fiber microbeam cell schematics of the miniature flame-proof cable of large core number.
Fig. 2 communicates by letter with the miniature flame-proof cable schematic diagram of large core number of the miniature flame-proof cable of large core number.
Embodiment
With reference to accompanying drawing 1,2, communication is comprised of multicore tightly packaged fiber microbeam unit, reinforcement 3, inner sheath 4, refractory gold mica tape 5, stainless steel wire braided wires layer 7, oversheath 6 with the miniature flame-proof cable of large core number.Multicore hard-pressed bale microbeam unit is stranded, multicore hard-pressed bale microbeam unit stranded layer adopts the high strength aramid fiber to strengthen making reinforcement 3 outward, the outer extrusion molding of reinforcement is sealed inner sheath 4, inner sheath 4 is outer to carry out wrapped with refractory gold mica tape 5 again, lapping layer weaves in order to stainless steel wire outward again, form stainless steel wire braided wires layer 7, at fire-resistant isinglass belt 5, the outer extrusion molding of stainless steel wire braid 7, seal oversheath 6.
Multicore tightly packaged fiber microbeam unit can adopt 24, every 12 core tightly packaged fiber microbeam unit.
12 cores be take as example in multicore tightly packaged fiber microbeam unit, and 12 core multicore hard-pressed bale unit adopt fire retardant polyolefin to carry out extrusion molding sheath 2 by 12 colored optical fibers, 1 outside and form.
Communicate by letter as follows by the miniature flame-proof cable method for making of large core number:
1, multicore hard-pressed bale microbeam unit makes
Be ready to the multi-core fiber pay off rack, each optical fiber pay off rack laying tension is regulated to test, the optical fiber laying tension is adjusted to 0.8N-1N, each optical fiber laying tension need be guaranteed unanimously;
Choose extruded mould and carry out extrusion molding outside the multicore tightly packaged fiber, multicore tightly packaged fiber protective cover material adopts low-smoke halogen-free material, regulate the sheath external diameter with wall thickness, multicore tightly packaged fiber micro unit external diameter is adjusted to 0.9mm～1.4mm, wall thickness 0.15mm～0.25mm, extrusion temperature is 145～175 ℃, makes multicore hard-pressed bale microbeam unit.
2, the inner sheath unit produces
Test multicore cage pay off rack tension force, be 1.5N-2N by cage pay off rack tension adjustment, and the cage pay off rack, according to color sequences, is loaded onto to, from tracked by guide wheel to head in polydisc multicore hard-pressed bale microbeam unit;
Install the aramid fiber reinforcement, the aramid fiber twisting pitch is modulated to 350-450mm;
Installed extruded mould, this structure optical cable adopts tubular molding tool, and the stranded rear external diameter in multicore hard-pressed bale microbeam unit is 3.2～7.95mm, and adding the stranded rear external diameter of aramid fiber is 3.5～8.25mm, and the inner sheath external diameter is designed to 5.8～10.4mm, wall thickness 0.6～0.8mm; According to stranded external diameter, sheath external diameter wall thickness calculates the core rod external diameter and adopts 4.6～9.3mm, and the die sleeve internal diameter adopts 8.3～12.9mm;
Regulate the sheath extrusion temperature: inner sheath adopts low-smoke and halogen-free flame retardant polyolefin jacket, the extruding machine temperature range is controlled is 130～170 ℃, regulate extrusion molding speed, extrusion molding speed is 30～35, follow the circular inner sheath of aramid fiber reinforcement outer cladding last layer in multicore hard-pressed bale microbeam unit by extruded mould, the inner sheath external diameter is controlled to 5.8～10.4mm, wall thickness 0.6～0.8mm, cooling through twice of hot water storgae, cold rinse bank, the hot water storgae temperature is controlled at 45～60 ℃, and the cold rinse bank temperature is controlled at 19～25 ℃;
Refractory gold mica tape is wrapped, the stainless steel wire braiding: according to the inner sheath external diameter, wrapped overlap joint is controlled as 10～15% of twining package tape width, calculate that to adopt specification to be that the 30-32mm mica tape carries out wrapped the most suitable, carrying out when wrapped, controlling wrapped tension force well, wrapped Tension design is 3-7N; Mica tape adopts the braiding of diameter 0.07mm stainless steel wire outward, forms the stainless steel wire braid.
3, oversheath production
Oversheath adopts high performance low smoke halogen-free flameproof material, has low cigarette, low toxicity, and low corrosion, the excellent properties such as high flame retardant,
Inner sheath is through Mica tape, after the stainless steel wire braiding, external diameter is 6.4mm～11.0mm, the oversheath external diameter is designed to 8.4mm～14.0mm, wall thickness 1.0mm～1.5mm is according to wrapped external diameter, the oversheath external diameter is chosen mould, mould is selected tubular molding tool, core rod external diameter 7.4mm～12mm, die sleeve internal diameter 10.9mm～16.8mm;
Install mould, the low-smoke halogen-free material extrusion temperature is controlled to 135～168 ℃, regulates mould with extrusion molding speed, extrusion molding speed is 25～30, external diameter is regulated, extrude high performance low smoke halogen-free flameproof material outside mica tape, stainless steel wire braid, form oversheath, cooling through twice of hot water storgae, cold rinse bank, the hot water storgae temperature is controlled at 45～60 ℃, the cold rinse bank temperature is controlled at 19～25 ℃, through drawing upper dish, makes the miniature flame-proof cable of large core number for communication.
Embodiment:
Communication, by the miniature flame-proof cable method for making of large core number, be take 288 cores as example.
288 cores are designed to 24 of multicore hard-pressed bale microbeam unit 12 core *.
1,12 core tightly packaged fiber microbeam unit produce
1) be ready to 12 core fibre pay off racks, each optical fiber pay off rack laying tension is regulated to test, the optical fiber laying tension is adjusted to 0.8N-1N, each optical fiber laying tension need be guaranteed unanimously;
2) choose extruded mould and carry out extrusion molding, the fine protective cover material of multicore hard-pressed bale adopts low-smoke halogen-free material, regulates the sheath external diameter with wall thickness, and the fine micro unit external diameter of 12 core multicore hard-pressed bales is adjusted to 1.4mm, wall thickness 0.2mm.
2, the inner sheath unit produces
1) testing 24 core cage pay off rack tension force, is 1.5N-2N by cage pay off rack tension adjustment, and by 24 dish microbeam unit, according to color sequences, front 12 colors are 12 chromatograms, and rear 12 colors adopt beats the colour circle mode, loads onto the cage pay off rack, from tracked by guide wheel to head;
2) install the aramid fiber reinforcement, the aramid fiber twisting pitch is modulated to 350-450mm;
3) installed extruded mould, this structure optical cable adopts tubular molding tool, and the 24 stranded rear external diameters in core microbeam unit are 7.95mm, and adding the stranded rear external diameter of aramid fiber is 8.25mm, and the inner sheath external diameter is designed to 10.4mm, wall thickness 0.8mm; According to stranded external diameter, sheath external diameter wall thickness calculates the core rod external diameter and adopts 9.3mm, and the die sleeve internal diameter adopts 12.9mm;
4) regulate the sheath extrusion temperature: inner sheath adopts low-smoke and halogen-free flame retardant polyolefin jacket, the extruding machine temperature range is controlled is 130～170 ℃, regulate extrusion molding speed, follow aramid fiber reinforcement outer cladding last layer circular jacket in the microbeam unit by extruded mould, the inner sheath external diameter is controlled to 10.4mm, wall thickness 0.8mm, cooling through twice of hot water storgae, cold rinse bank, the hot water storgae temperature is controlled at 45～60 ℃, and the cold rinse bank temperature is controlled at 19～25 ℃;
Refractory gold mica tape is wrapped, the stainless steel wire braiding;
5) according to the inner sheath external diameter, wrapped overlap joint is controlled as 10～15% of twining package tape width, calculates that to adopt specification to be that the 30-32mm mica tape carries out wrapped the most suitable, is carrying out when wrapped, controls wrapped tension force well, and wrapped Tension design is 3-7N.The braiding of mica tape external application diameter 0.07mm stainless steel wire.
3, oversheath production
1) oversheath adopts high performance low smoke halogen-free flameproof material, has low cigarette, low toxicity, low corrosion, the excellent properties such as high flame retardant;
2) inner sheath external diameter after the braiding of Mica tape stainless steel wire is 11.0mm, and the oversheath external diameter is designed to 14.0mm, and wall thickness 1.5mm is according to wrapped braiding external diameter, the oversheath external diameter is chosen mould, mould is selected tubular molding tool, core rod external diameter 12.0mm, die sleeve internal diameter 16.8mm;
3) install mould, the low-smoke halogen-free material extrusion temperature is controlled to 135～168 ℃, regulate mould with extrusion molding speed, external diameter is regulated, cooling through the hot water storgae cold rinse bank, through drawing upper dish, make the miniature flame-proof cable of large core number for communication.
Claims (2)
1. the miniature flame-proof cable of large core number for communication, is characterized in that: multicore tightly packaged fiber microbeam unit, reinforcement, inner sheath, refractory gold mica tape, stainless steel wire braided wires layer, oversheath, consist of; Multicore tightly packaged fiber microbeam unit is stranded, multicore tightly packaged fiber microbeam unit stranded layer adopts the high strength aramid fiber to strengthen making reinforcement outward, the outer extrusion molding of reinforcement is sealed inner sheath, inner sheath carries out wrapped with refractory gold mica tape outward again, lapping layer weaves in order to stainless steel wire outward again, form stainless steel wire braided wires layer, outside refractory gold mica tape, stainless steel wire braid, extrusion molding is sealed oversheath.
2. the miniature flame-proof cable of large core number for communication according to claim 1, it is characterized in that: multicore tightly packaged fiber microbeam unit can adopt 24, every 12 core tightly packaged fiber microbeam unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320479524.4U CN203385911U (en) | 2013-08-07 | 2013-08-07 | High-count miniature fireproof optical cable for communication |
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| CN201320479524.4U CN203385911U (en) | 2013-08-07 | 2013-08-07 | High-count miniature fireproof optical cable for communication |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103383487A (en) * | 2013-08-07 | 2013-11-06 | 江苏中天科技股份有限公司 | Large-core-number miniature fire-proof optical cable for communication and manufacture method thereof |
| WO2019145046A1 (en) * | 2018-01-29 | 2019-08-01 | Prysmian S.P.A. | Fire resistant fibre optic cable |
-
2013
- 2013-08-07 CN CN201320479524.4U patent/CN203385911U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103383487A (en) * | 2013-08-07 | 2013-11-06 | 江苏中天科技股份有限公司 | Large-core-number miniature fire-proof optical cable for communication and manufacture method thereof |
| CN103383487B (en) * | 2013-08-07 | 2015-08-26 | 江苏中天科技股份有限公司 | Large-core-number miniature fire-proof optical cable for communication and preparation method thereof |
| WO2019145046A1 (en) * | 2018-01-29 | 2019-08-01 | Prysmian S.P.A. | Fire resistant fibre optic cable |
| US11555974B2 (en) | 2018-01-29 | 2023-01-17 | Prysmian S.P.A. | Fire resistant fiber optic cable |
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| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140108 |
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| CX01 | Expiry of patent term |