CN103399384A - Displacement sensing optical cable and manufacturing method thereof - Google Patents
Displacement sensing optical cable and manufacturing method thereof Download PDFInfo
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- CN103399384A CN103399384A CN2013103412545A CN201310341254A CN103399384A CN 103399384 A CN103399384 A CN 103399384A CN 2013103412545 A CN2013103412545 A CN 2013103412545A CN 201310341254 A CN201310341254 A CN 201310341254A CN 103399384 A CN103399384 A CN 103399384A
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Abstract
The invention discloses a displacement sensing optical cable and a manufacturing method thereof, and relates to a directly-buried and suspended type flame-retardant and waterproof optical cable which is quite sensitive to displacement sensing, and the manufacturing method of the optical cable. The cable adopts a nonmetallic waterproof reinforcer to reinforce components, different numbers of tightly-wrapped optical fibers (G652D optical fibers) are arranged in the middle of the reinforcer, and an outer jacket is a low-smoke zero-halogen and flame-retardant jacket which is high in flame retardance. The displacement sensing optical cable in the structure is applicable to sensing of bad situations such as sinking and collapsing of a sensitive area and slight sinking of a high-speed rail. The optical cable is high in bending property, high in high side pressure resistance, high in tension resistance and easy to construct and operate. The displacement sensing optical cable comprises an optical fiber unit, a reinforcer and the outer jacket, wherein the optical fiber unit is positioned in the center of the displacement sensing optical cable; the reinforcer is arranged outside the optical fiber unit; and the outer jacket wraps the optical fiber unit and the reinforcer.
Description
Technical field
Displacement sensing optical cable of the present invention and preparation method thereof relates to be a kind of to the very sensitive direct-burried of displacement induction, hang with fire-retardant water blocking optical cable and preparation method thereof, this cable adopts the nonmetal reinforcement stiffener that blocks water, in the middle of reinforcement, be that quantity does not wait tightly packaged fiber (optical fiber adopts G652D optical fiber), oversheath adopts the low-smoke halogen-free flame-retardant sheath material of high flame retardant.The displacement sensing optical cable of this kind structure is applicable to respond to the sensitive area earth subsidence, stays, and the high ferro rail slightly sink and waits undesirable condition.This optical cable has excellent bending property, anti-high side pressure performance and good resistance to tension, extremely is easy to constructing operation.
Background technology
At present, internal optical fiber optical cable sensor-based system is in design, development always, and is not yet universal.Traditional sensor-based system adopts copper cash as the line of induction, and the copper cash sensing has certain defect, as: the often wrong report etc. of positional uncertainty, rainy weather.In sensor-based system, optical cable has its very important advantage, as: accurate positioning, the information instantaneity, be not subjected to overcast and rainy thunder and lightning weather effect.Optical cable being applied in very early in sensor-based system starts, but for different induction systems, the selection of optical cable also can be different.
Summary of the invention
The present invention seeks to the deficiency in sensor-based system for copper cash, a kind of displacement sensing optical cable and preparation method thereof is provided, the effect of performance optical cable, by the further perfectionization of sensor-based system, reduce the error of bringing in the practical application life.This optical cable, long transmission distance, quality is light, facilitates welding, blocks water, and is fire-retardant, and mechanical property is strong, can be suitable for many occasions.Be suitable for the forms of construction work such as vertical, horizontal wiring or pipeline wiring, for the sensing optic cable system provides greatly applicable scene.This cable outward appearance of this cable is circular, and non-metal reinforcement member is strengthened, and in the middle of reinforcement, is the tightly packaged fiber (optical fiber adopts G652D optical fiber) that quantity does not wait, and method for making is simple, and the cable footpath is little, and is lightweight, excellent bendability and tension lateral pressure resistant performance.
Displacement sensing optical cable and preparation method thereof takes following technical scheme to realize:
The displacement sensing optical cable comprises fiber unit, reinforcement and oversheath.Described fiber unit adopts tightly packaged fiber unit, and fiber unit is positioned at displacement sensing optical cable central authorities, and the fiber unit outer setting has reinforcement, at fiber unit and reinforcement, is coated with oversheath.Reinforcement adopts the glass fibre that blocks water, and outside coats the low smoke and zero halogen oversheath, and oversheath adopts the materials such as low smoke halogen-free flame-retardant polyolefin, and must meet: high flame retardant, environmental-protecting performance is high.
Described fiber unit has optical fiber, outside optical fiber, is coated with the photo-curing material layer, at optical fiber and photo-curing material layer, is coated with restrictive coating.Optical fiber adopts G.652D optical fiber (dispersion-unshifted single mode fiber), and this optical fiber has fabulous low water peak, and grating can be complementary with system, also can the phase welding with built on stilts outdoor optical cable (conventional for G.652D optical fiber), save corresponding expense.Restrictive coating adopts nylon 12 material to make.
Nonmetal reinforcement material uses the glass fibre that blocks water of 1200dtex, the glass fiber strength >=1000Mpa that blocks water, and drum is neat, without stepping on line and joint phenomenon.
Jacket material adopts thermoplastic low-smoke halide-free fireproof composite polyolefine CABLE MATERIALS (LSZH material), has good mechanical and physical performance, heat resistance, electrical property, fire resistance and process industrial art performance, have not halogen-containing, the amount of being fuming is low.Can be by 100 ℃ of thermal deformations and Apparatus for Pressure at high-temp.Pulling strengrth >=10Mpa, breaking elongation >=125%, oxygen index >=30%
Displacement sensing fiber optic cable production method:
1,1 G652D bare fibre is installed on fiber placing shaft, adjust the fine tension force of putting of optical fiber, put fine tension force 0.3～0.9N.
2, more above-mentioned bare fibre is imported in the hard-pressed bale mould, optical fiber is pressed to the take-up direction on take-up reel.
3, adjusting high-molecular optical curing materials pressure, temperature, adjusting pressure are 2.0～5.0bar, and temperature is 30～60 ℃, opens high-molecular optical curing materials valve, regulates simultaneously the protective gas consumption, and protective gas can adopt nitrogen and other inert gases.
4, above-mentioned high-molecular optical curing materials is injected optical fiber hard-pressed bale mould is housed, import simultaneously protective gas, the high-molecular optical curing materials can adopt silicon rubber etc., and protective gas can adopt nitrogen and other inert gases.
5, the above-mentioned optical fiber that is coated with photo-curing material is carried out to ultraviolet light polymerization.
6, by curing optical fiber, the extrusion molding mould by extruding machine is at curing optical fiber unit outer cladding last layer sheath, and cooling through hot water storgae, cold rinse bank secondary, the hot water storgae temperature is at 30～50 ℃, and the cold rinse bank temperature is at 15～25 ℃.Namely make tightly packaged fiber unit.Sheath adopts nylon 12 macromolecular materials, and external diameter is 0.9 ± 0.05mm.
7, the above-mentioned tightly packaged fiber unit that completes is carried out to optical fiber attenuation, peeling force and length detection, tightly packaged fiber is filled to pay off rack after qualified, laying tension is adjusted to 1.3～1.5N.
8,5～7 glass fibre that block water are placed on the aramid fiber machine, adjust the reinforcement laying tension, laying tension 2～6N.
9, adjust displacement sensing optical cable extruded mould, require not core shift of mould, die pressure is moderate, and core rod is 2～4mm left and right after the die sleeve mouth foremost.
10, tightly packaged fiber and the glass fibre that blocks water are drawn by the direction of take-up through tension controller, and be incorporated in mould.
11, regulate between 140 ℃～170 ℃ of sheath material temperature, extrusion molding speed 40m/min by the extrusion molding mould at tightly packaged fiber and non-metal reinforcement member outer cladding last layer sheath, cooling through hot water storgae, cold rinse bank secondary, the hot water storgae temperature is at 30～50 ℃, and the cold rinse bank temperature is at 15～25 ℃.Require single core cable external diameter 4.7～4.9mm, wall thickness 1.0mm ± 0.1mm, jacket surface should be smooth, color is even, there is no slight crack, bubble and spot, makes the displacement sensing optical cable.
Described sheath can adopt low-smoke halide-free fireproof composite polyolefine material.
12, the above-mentioned displacement sensing optical cable that completes is carried out to optical fiber attenuation, lettering and confirm and length detection, namely make displacement sensing optical cable finished product after qualified, around to take-up reel.
The displacement sensing optic cable design is reasonable, through submitting to Chinese Academy of Sciences's test, meets the stress sensing system requirements fully.This displacement sensing fiber optic cable production technological process is simple and reliable.
The advantage of the displacement sensing optical cable of making through the present invention:
1, adopt the nonmetal reinforcement that blocks water, LSZH protective cover material can give full play to the flexibility of optical cable, susceptibility is high.
2, optical cable environmental protection flame retardant.
3, make cable footpath trend small-sized, the weight trend is light-duty.
4, construction continues conveniently, can use the multiple construction methods such as quick connection, cold joint, thermal welding.
The accompanying drawing explanation
The invention will be further described below with reference to accompanying drawing:
Fig. 1 is displacement sensing cable configuration schematic diagram.
Embodiment
With reference to accompanying drawing 1, the displacement sensing optical cable comprises fiber unit, reinforcement 4 and oversheath 5.Described fiber unit adopts tightly packaged fiber unit, and fiber unit is positioned at displacement sensing optical cable central authorities, and the fiber unit outer setting has reinforcement 4, at fiber unit and reinforcement 4, is coated with oversheath 5.Reinforcement 4 adopts the glass fibre that blocks water, and outside coats low smoke and zero halogen oversheath 5, and oversheath 5 adopts the materials such as low smoke halogen-free flame-retardant polyolefin, and must meet: high flame retardant, environmental-protecting performance is high.
Described fiber unit has optical fiber 1, outside optical fiber, is coated with the photo-curing material layer, at optical fiber 1 and photo-curing material layer 2, is coated with restrictive coating 3.Optical fiber adopts G.652D optical fiber (dispersion-unshifted single mode fiber), and this optical fiber has fabulous low water peak, and grating can be complementary with system, also can the phase welding with built on stilts outdoor optical cable (conventional for G.652D optical fiber), save corresponding expense.Restrictive coating 3 adopts nylon 12 material to make.
The glass fibre that blocks water of non-metal reinforcement member 4 materials'use 1200dtex, the glass fiber strength >=1000Mpa that blocks water, drum is neat, without stepping on line and joint phenomenon.
Oversheath 5 materials adopt thermoplastic low-smoke halide-free fireproof composite polyolefine CABLE MATERIALS (LSZH material), have good mechanical and physical performance, heat resistance, electrical property, fire resistance and process industrial art performance, have not halogen-containing, the amount of being fuming is low.Can be by 100 ℃ of thermal deformations and Apparatus for Pressure at high-temp.Pulling strengrth >=10Mpa, breaking elongation >=125%, oxygen index >=30%.
Displacement sensing fiber optic cable production method:
1,1 G652D bare fibre is installed on fiber placing shaft, adjust the fine tension force of putting of optical fiber, put fine tension force 0.3～0.9N.
2, more above-mentioned bare fibre is imported in the hard-pressed bale mould, optical fiber is pressed to the take-up direction on take-up reel.
3, adjusting high-molecular optical curing materials pressure, temperature, adjusting pressure are 2.0～5.0bar, and temperature is 30～60 ℃, opens high-molecular optical curing materials valve, regulates simultaneously the protective gas consumption, and protective gas can adopt nitrogen and other inert gases.
4, above-mentioned high-molecular optical curing materials is injected optical fiber hard-pressed bale mould is housed, import simultaneously protective gas, the high-molecular optical curing materials can adopt silicon rubber etc., the adoptable nitrogen of protective gas and other inert gases thereof.
5, the above-mentioned optical fiber that is coated with photo-curing material is carried out to ultraviolet light polymerization.
6, by curing optical fiber, the extrusion molding mould by extruding machine is at curing optical fiber unit outer cladding last layer sheath, and cooling through hot water storgae, cold rinse bank secondary, the hot water storgae temperature is at 30～50 ℃, and the cold rinse bank temperature is at 15～25 ℃.Namely make tightly packaged fiber unit.Sheath adopts nylon 12 macromolecular materials, and external diameter is 0.9 ± 0.05mm.
7, the above-mentioned tightly packaged fiber unit that completes is carried out to optical fiber attenuation, peeling force and length detection, tightly packaged fiber is filled to pay off rack after qualified, laying tension is adjusted to 1.3～1.5N.
8,5～7 glass fibre that block water are placed on the aramid fiber machine, adjust the reinforcement laying tension, laying tension 2～6N.
9, adjust displacement sensing optical cable extruded mould, require not core shift of mould, die pressure is moderate, and core rod is 2～4mm left and right after the die sleeve mouth foremost.
10, tightly packaged fiber and the glass fibre that blocks water are drawn by the direction of take-up through tension controller, and be incorporated in mould.
11, regulate between 140 ℃～170 ℃ of sheath material temperature, extrusion molding speed 40m/min by the extrusion molding mould at tightly packaged fiber and non-metal reinforcement member outer cladding last layer sheath, cooling through hot water storgae, cold rinse bank secondary, the hot water storgae temperature is at 30～50 ℃, and the cold rinse bank temperature is at 15～25 ℃.Require single core cable external diameter 4.7～4.9mm, wall thickness 1.0mm ± 0.1mm, jacket surface should be smooth, color is even, there is no slight crack, bubble and spot, makes the displacement sensing optical cable.
Described sheath can adopt low-smoke halide-free fireproof composite polyolefine material.
12, the above-mentioned displacement sensing optical cable that completes is carried out to optical fiber attenuation, lettering and confirm and length detection, namely make displacement sensing optical cable finished product after qualified, around to take-up reel.
Displacement sensing optical cable of the present invention is through detecting:
1, tensile property is required to meet: IEC60794-1-2-E1A
2, flattening performance requirement meets: IEC60794-1-2-E3
3, the performance requirement that circumnutates meets: IEC60794-1-2-E11A
4, permeability performance is required to meet: IEC60794-2-20
5, temperature cycles is required to meet: IEC61300-2-2
6, fire resistance is required to meet: IEC62332-1-2
7, anti-ultraviolet property is required to meet: UL1581
Applicability is by the checking of the ray machine BOTDR of institute of Chinese Academy of Sciences checkout equipment.
Claims (8)
1. a displacement sensing optical cable, is characterized in that: comprise fiber unit, reinforcement and oversheath; Fiber unit is positioned at displacement sensing optical cable central authorities, and the fiber unit outer setting has reinforcement, at fiber unit and reinforcement, is coated with oversheath.
2. displacement sensing optical cable according to claim 1 is characterized in that: described reinforcement adopts the glass fibre that blocks water, and outside coats the low smoke and zero halogen oversheath, and oversheath adopts low-smoke halide-free fireproof composite polyolefine material.
3. displacement sensing optical cable according to claim 1, is characterized in that: described fiber unit employing tightly packaged fiber unit.
4. displacement sensing optical cable according to claim 1, it is characterized in that: described fiber unit has optical fiber, outside optical fiber, is coated with the photo-curing material layer, at optical fiber and photo-curing material layer, is coated with restrictive coating, optical fiber adopts G.652D optical fiber, and restrictive coating adopts nylon 12 material to make.
5. displacement sensing optical cable according to claim 1, is characterized in that: jacket material employing thermoplastic low-smoke halide-free fireproof composite polyolefine CABLE MATERIALS.
6. displacement sensing fiber optic cable production method claimed in claim 1 is characterized in that:
(1) 1 G652D bare fibre is installed on fiber placing shaft, adjust the fine tension force of putting of optical fiber, put fine tension force 0.3～0.9N;
(2) more above-mentioned bare fibre is imported in the hard-pressed bale mould, optical fiber is pressed to the take-up direction on take-up reel;
(3) regulate high-molecular optical curing materials pressure, temperature, adjusting pressure is 2.0～5.0bar, and temperature is 30～60 ℃, opens high-molecular optical curing materials valve, regulates simultaneously the protective gas consumption, and protective gas can adopt nitrogen and other inert gases;
(4) above-mentioned high-molecular optical curing materials is injected optical fiber hard-pressed bale mould is housed, import simultaneously protective gas, the high-molecular optical curing materials can adopt silicon rubber, the adoptable nitrogen of protective gas and other inert gases thereof;
(5), the above-mentioned optical fiber that is coated with photo-curing material is carried out to ultraviolet light polymerization;
(6) by curing optical fiber, the extrusion molding mould by extruding machine is at curing optical fiber unit outer cladding last layer sheath, and cooling through hot water storgae, cold rinse bank secondary, the hot water storgae temperature is at 30～50 ℃, and the cold rinse bank temperature, at 15～25 ℃, is namely made tightly packaged fiber unit;
(7) the above-mentioned tightly packaged fiber unit that completes is carried out to optical fiber attenuation, peeling force and length detection, tightly packaged fiber is filled to pay off rack after qualified, laying tension is adjusted to 1.3～1.5N;
(8) 5～7 glass fibre that block water are placed on the aramid fiber machine, adjust the reinforcement laying tension, laying tension 2～6N;
(9) adjust displacement sensing optical cable extruded mould, require not core shift of mould, die pressure is moderate, and core rod is 2～4mm left and right after the die sleeve mouth foremost;
(10) by tightly packaged fiber and block water and peel off fiber and draw by the direction of take-up through tension controller, and be incorporated in mould;
(11) regulate between 140 ℃～170 ℃ of sheath material temperature, extrusion molding speed 40m/min by the extrusion molding mould at tightly packaged fiber and non-metal reinforcement member outer cladding last layer oversheath, cooling through hot water storgae, cold rinse bank secondary, the hot water storgae temperature is at 30～50 ℃, and the cold rinse bank temperature is at 15～25 ℃; Require single core cable external diameter 4.7～4.9mm, wall thickness 1.0mm ± 0.1mm, jacket surface should be smooth, color is even, there is no slight crack, bubble and spot, makes the displacement sensing optical cable;
(12) the above-mentioned displacement sensing optical cable that completes is carried out to optical fiber attenuation, lettering and confirm and length detection, namely make displacement sensing optical cable finished product after qualified, around to take-up reel.
7. displacement sensing fiber optic cable production method according to claim 6 is characterized in that: the sheath in operation (6) adopts nylon 12 macromolecular materials, and external diameter is 0.9 ± 0.05mm.
8. displacement sensing fiber optic cable production method according to claim 6, is characterized in that: the described oversheath employing low-smoke halide-free fireproof composite polyolefine material in operation (11).
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044865A (en) * | 2015-07-24 | 2015-11-11 | 江苏中天科技股份有限公司 | Tension bending resistance high-capacity optical cable in car and production method thereof |
| CN110618507A (en) * | 2019-09-29 | 2019-12-27 | 昆山频谱电子科技有限公司 | Longitudinal watertight tightly-packed optical fiber and preparation method thereof |
| CN116661079A (en) * | 2023-07-26 | 2023-08-29 | 江苏中天科技股份有限公司 | Sensing optical cable |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105044865A (en) * | 2015-07-24 | 2015-11-11 | 江苏中天科技股份有限公司 | Tension bending resistance high-capacity optical cable in car and production method thereof |
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Application publication date: 20131120 |