CN203668234U - Efficient equipment for preparing external coating of optical fiber preform - Google Patents
Efficient equipment for preparing external coating of optical fiber preform Download PDFInfo
- Publication number
- CN203668234U CN203668234U CN201320861524.0U CN201320861524U CN203668234U CN 203668234 U CN203668234 U CN 203668234U CN 201320861524 U CN201320861524 U CN 201320861524U CN 203668234 U CN203668234 U CN 203668234U
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- blowtorch
- screw rod
- screw mandrel
- evaporating pot
- chuck
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- Expired - Lifetime
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- 239000013307 optical fiber Substances 0.000 title abstract description 4
- 239000011248 coating agent Substances 0.000 title abstract 2
- 238000000576 coating method Methods 0.000 title abstract 2
- 238000001704 evaporation Methods 0.000 claims abstract description 53
- 238000010438 heat treatment Methods 0.000 claims abstract description 50
- 230000005540 biological transmission Effects 0.000 claims abstract description 23
- 239000002994 raw material Substances 0.000 claims abstract description 18
- 239000002184 metal Substances 0.000 claims abstract description 16
- 229920000742 Cotton Polymers 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 230000033001 locomotion Effects 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims description 20
- 238000002360 preparation method Methods 0.000 claims description 20
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 210000004907 gland Anatomy 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 210000005239 tubule Anatomy 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 4
- 230000004075 alteration Effects 0.000 claims description 3
- 238000012790 confirmation Methods 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 abstract description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 7
- 239000010453 quartz Substances 0.000 abstract description 4
- 230000001360 synchronised effect Effects 0.000 abstract description 3
- 238000004321 preservation Methods 0.000 abstract 2
- 239000007789 gas Substances 0.000 description 19
- 238000000151 deposition Methods 0.000 description 16
- 230000008021 deposition Effects 0.000 description 14
- 238000000034 method Methods 0.000 description 11
- 239000000843 powder Substances 0.000 description 9
- 238000004062 sedimentation Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 7
- 238000005498 polishing Methods 0.000 description 6
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000001354 calcination Methods 0.000 description 4
- 230000005021 gait Effects 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 229910003910 SiCl4 Inorganic materials 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000005137 deposition process Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- FDNAPBUWERUEDA-UHFFFAOYSA-N silicon tetrachloride Chemical compound Cl[Si](Cl)(Cl)Cl FDNAPBUWERUEDA-UHFFFAOYSA-N 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 229910018557 Si O Inorganic materials 0.000 description 2
- 229910003902 SiCl 4 Inorganic materials 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 2
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- HMMGMWAXVFQUOA-UHFFFAOYSA-N octamethylcyclotetrasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 HMMGMWAXVFQUOA-UHFFFAOYSA-N 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002367 halogens Chemical group 0.000 description 1
- HTDJPCNNEPUOOQ-UHFFFAOYSA-N hexamethylcyclotrisiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O1 HTDJPCNNEPUOOQ-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- HZBAVWLZSLOCFR-UHFFFAOYSA-N oxosilane Chemical compound [SiH2]=O HZBAVWLZSLOCFR-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
The utility model relates to efficient equipment for preparing an external coating of an optical fiber preform. The equipment comprises an outer sealing chamber, a transmission motor, a poidometer, a chuck, a screw rod transmission motor, a screw rod, a blow lamp, an evaporation tank, a heating device, a fixing device, a raw material conveying pipeline, a raw material gas pipeline and an ordinary gas pipeline, wherein the heating device comprises a heating jacket and a piece of quartz heat preservation cotton; the heating jacket is uniformly wrapped outside the evaporation tank; the quartz heat preservation cotton is uniformly wrapped outside the heating jacket the fixing device comprises a metal bracket and a screw rod linkage device; the evaporation tank is mounted on the metal bracket; the blow lamp is mounted on the metal bracket at the upper part of the evaporation tank; the screw rod linkage device is mounted at the lower part of the metal bracket; the screw rod linkage device is mounted on the screw rod; the screw rod is connected with the screw rod transmission motor; the screw rod transmission motor is used for driving the screw rod in a transmission manner; the fixing device is driven by the screw rod linkage device to perform synchronous horizontal movement together with the blow lamp and the evaporation tank; the blow lamp is connected with the evaporation tank through the raw material gas pipeline.
Description
Technical field
The utility model relates to the efficient Preparation equipment of a kind of preform surrounding layer.
Background technology
In existing preform surrounding layer manufacture method, outside vapour deposition process (OVD) is the technique of preparing preformod of optical fiber with low water peak cost performance optimum.This technique is used oxyhydrogen flame to make SiCl
4raw material generation high-temperature hydrolysis, at a certain amount of SiO of minor diameter mandrel outer surface deposition
2powder makes powder preform, then uses the method identical with plug sintering to sinter soot preforms into transparent prefabricated rods, more make preform after degassed processing.
In CN102320732A patent, mention and use SlCl
4while doing reaction raw materials, have the following disadvantages: SiCl4 vapour deposition process can produce chlorine and the hydrogenchloride of strong corrosion and toxicity, purifying treatment is of a high price, and the remaining SiCl4 that has neither part nor lot in reaction is difficult to hydrogenation and reclaims, once entered environment will produce baneful influence, contaminated ground can become barren land; The deposition silica glass taking SiCl4 as raw material, can in silica glass material, introduce Si-Cl key, destroy original Si-O spacial framework, cause Si-O atom chain break, in macroscopic view, show as and reduced the viscosity of quartzy melt and the physical strength of optical fiber, fibercuts probability is increased.Above-mentioned technological deficiency is those skilled in the art's technical problem urgently to be resolved hurrily always.
In CN102320732A patent, mention equally octamethylcyclotetrasiloxane and oxygen by different pipeline input blowtorch, and mixed firing occurs at the nozzle place of blowtorch form silicon dioxide powder and be attached to and on target rod, form prefabricated rods loosening body.By finding in practical application, the heat output that the method provides is inadequate, the SiO that has that combustion reactions is insufficient, blowtorch easily stops up, forms after mixed firing
2powder is difficult for being attached to the first-class technique difficult problem of target rod.
Summary of the invention
The utility model object is to provide a kind of preform surrounding layer efficient Preparation equipment for above-mentioned weak point.
The efficient Preparation equipment of a kind of preform surrounding layer is to take following technical scheme to realize:
The efficient Preparation equipment of a kind of preform surrounding layer comprises equipment outer gland sealing cavity, driving motor, weighing scale, chuck, screw rod transmission motor, screw mandrel, blowtorch, evaporating pot, heating unit, stationary installation, feed line road, unstripped gas pipeline and general air pipe.
Described heating unit comprises heating jacket (heating zone), quartzy insulating cotton, and so-called heating jacket adopts alternating current 220V voltage, 200 DEG C of the heating upper limits.Heating jacket is evenly wrapped in evaporating pot outside, and quartzy insulating cotton is evenly wrapped in heating jacket outside.
Described stationary installation comprises through metal, screw mandrel linkage system, and evaporating pot is arranged on through metal, and blowtorch 9 is arranged on the through metal on evaporating pot top, and screw mandrel linkage system is equipped with in through metal bottom.Screw mandrel linkage system is arranged on screw mandrel, and screw mandrel is connected with screw rod transmission motor, and screw rod transmission motor 7 drive lead screws drive stationary installation level of synchronization to move by screw mandrel linkage system.Described screw mandrel linkage system adopts screw rod transmission nut.
Between blowtorch and evaporating pot, adopt unstripped gas pipeline to be connected, the outside alternating current 220V voltage that adopts of unstripped gas pipeline between evaporating pot and blowtorch, after heating 220 DEG C of heating jackets of the upper limit (heating zone) wrap up, periphery is wrapped up quartzy insulating cotton again.
Prefabricated rod mandrel two ends clamping is on the chuck being arranged in equipment outer gland sealing cavity, and driving motor is connected with one of them chuck, and wherein, after chuck clamping plug, driving motor drives chuck at the uniform velocity to rotate.Driving motor and chuck below erection weight meter, stop weight confirmation for Real-time Feedback prefabricated rods manufacturing processed weight alteration trend and target.Screw rod transmission motor-driven screw mandrel motion, suitable by screw mandrel, be rotated counterclockwise, drive stationary installation to move left and right.Reaction is fixed in stationary installation with blowtorch and moving evaporation tank, is connected between the two by unstripped gas pipeline between evaporating pot and blowtorch.The general gas that blowtorch uses carries out outside with general air pipe and carries.Stationary installation is done level of synchronization motion together with blowtorch and evaporating pot by screw mandrel linkage system and screw mandrel.
The preparation method of the efficient Preparation equipment of a kind of preform surrounding layer is as follows:
1) in evaporating pot, temperature is controlled at 185～195 DEG C, and between evaporating pot and blowtorch, pipeline temperature is controlled at 195～205 DEG C;
2) in equipment outer gland sealing cavity, open air draft, keeping negative pressure in cavity is 40Pa;
3) length of making is the prefabricated rod mandrel that 3000mm, diameter are 45 ~ 50mm;
4) plug two ends are clamped in chuck draw-in groove, chuck rotation speed setting is 50rpm, opens chuck rotation;
5) obstructed raw material, blowtorch gait of march is set 400mm/min.Blowtorch igniting is from starting plug to carry out calcination apart from plug left end 400mm position, and calcination always, to apart from plug right-hand member 400mm position, is carried out polishing to plug.Polishing flow: H
2: 230L/min, O
2: 115L/min, removes the impurity of mandrel surface.After polishing, close flame;
6) blowtorch is moved to apart from plug left end 400mm position, deposition blowlamp is lighted a fire;
7) start " operation automatically " button, depositing device chuck starts rotation with the rotating speed of 50rpm, and quartzy blowtorch starts at mandrel surface deposition SiO with the translational speed of 400mm/min
2powder.Quartz blowtorch is set flow: siliceous hydrocarbon polymer (as: C
8h
24o
4si
4): 100g/min, H
2: 150L/min, O
2: 75L/min, N
2: 20L/min, Ar:20L/min;
8) deposition reaction reaches after goal-selling weight, and blowtorch automatically cuts out flame and stops deposition.Chuck continues to stop the rotation after rotation 3min, for reducing Powder Rod surface temperature;
9) after continuing cooling 40min, prepare preform surrounding layer, the prefabricated rods for preparing surrounding layer is unloaded to equipment and carry out next step sintering processes.
The efficient Preparation equipment feature of a kind of preform surrounding layer of the utility model:
The utility model adopts outside vapour deposition process, replaces SiCl with the methyl cyclopolysiloxane of halogen substituent (octamethylcyclotetrasiloxane, hexamethyl cyclotrisiloxane etc.) not
4as the raw material of manufacturing preform surrounding layer, carry out the surrounding layer deposition of preform.
The methyl cyclopolysiloxane that the utility model uses, containing element C, O, H in molecule, be clean energy, can not produce a large amount of harmful hydrogenchloride in reaction process, overcome chloride raw material and in covering, introduced the shortcoming of the singly-bound of blocking-up atomic bond, improved purity and the intensity of prefabricated rods material.
The utility model adopts H
2, O
2, N
2provide high-temperature hydrolysis required heat, in methyl cyclopolysiloxane pipeline, introduce again separately a road H
2, make up the defect of simple burning methyl cyclopolysiloxane shortage of heat, react fully and carry out.Can promote efficiently sedimentation effect.
The utility model adopts specific blowtorch, and flame centrality is strengthened, and the amount of heat that reaction produces is difficult for diffusion, makes blowtorch mouth SiO
2powder motion aggravation.Under the impact of thermophoretic effect, accelerate SiO
2powder accumulation speed, between particle, arrange can be finer and close simultaneously, is beneficial to powder accumulation.The method significantly promotes raw material sedimentation rate, reduces Powder Rod cracking probability.
The utility model adopts movable evaporation tank, and between blowtorch and evaporating pot, length of pipe is fixed; Pipeline outer wrap heating zone, insulating cotton, for pipeline heating and insulation; Evaporating pot and blowtorch are synchronized with the movement in reaction process.By above action, guarantee from evaporating pot to pipeline between blowtorch in methyl cyclopolysiloxane be all gaseous state, improve speed of reaction, reduce blowtorch mouth and line clogging probability simultaneously.
Brief description of the drawings
Below with reference to accompanying drawing, the utility model is described in further detail:
Fig. 1 is the efficient Preparation equipment schematic diagram of a kind of preform surrounding layer of the utility model.
Fig. 2 is the blowtorch schematic diagram of the efficient Preparation equipment of a kind of preform surrounding layer of the utility model.
Fig. 3 is the blowtorch gas distribution figure of the efficient Preparation equipment of a kind of preform surrounding layer of the utility model.
In figure: 1, equipment outer gland sealing cavity; 2, chuck driving motor; 3, weighing scale; 4, chuck; 5, prefabricated rods surrounding layer; 6, prefabricated rod mandrel; 7, screw rod transmission motor; 8, screw mandrel; 9, blowtorch; 10, evaporating pot; 11, heating jacket; 12, stationary installation; 13, feed line road; 14, unstripped gas pipeline; 15, general air pipe; 16, blowtorch inner tubule bending part; 17, not bending part of blowtorch tubule; 18, blowtorch raw material pipeline; 19, raw material; 20, nitrogen; 21, hydrogen; 22, oxygen; 23, nitrogen and oxygen.
Embodiment
With reference to accompanying drawing 1～3, the efficient Preparation equipment of a kind of preform surrounding layer comprises equipment outer gland sealing cavity 1, driving motor 2, weighing scale 3, chuck 4, screw rod transmission motor 7, screw mandrel 8, blowtorch 9, moving evaporation tank 10, heating unit 11, stationary installation 12, feed line road 13, unstripped gas pipeline 14 and general air pipe 15.
Described heating unit 11 comprises heating jacket, quartzy insulating cotton, and so-called heating jacket adopts alternating current 220V voltage, 200 DEG C of the heating upper limits.Heating jacket is evenly wrapped in evaporating pot outside, and quartzy insulating cotton is evenly wrapped in heating jacket outside.
Described stationary installation 12 comprises through metal, screw mandrel linkage system, and evaporating pot 10 is arranged on through metal, and blowtorch 9 is arranged on the through metal on evaporating pot 10 tops, and screw mandrel linkage system is equipped with in through metal bottom.Screw mandrel linkage system is arranged on screw mandrel 8, and screw mandrel 8 is connected with screw rod transmission motor 7, and screw rod transmission motor 7 drive lead screws 8 drive stationary installation 12 to move as level of synchronization together with blowtorch 9 and evaporating pot 10 by screw mandrel linkage system.Described screw mandrel linkage system adopts screw rod transmission nut.
Between blowtorch 9 and evaporating pot 10, be connected with unstripped gas pipeline 14, the outside alternating current 220V voltage that adopts of unstripped gas pipeline 14 between evaporating pot and blowtorch, after heating 220 DEG C of heating jackets of the upper limit (heating zone) wrap up, periphery is wrapped up quartzy insulating cotton again.
Prefabricated rod mandrel 6 two ends clampings are on the chuck 4 being arranged in equipment outer gland sealing cavity 1, and driving motor 2 is connected with one of them chuck 4, and wherein chuck 4 clamps after plug, and driving motor 2 drives chuck 4 at the uniform velocity to rotate.Driving motor 2 and chuck 4 below erection weight meters 3, stop weight confirmation for Real-time Feedback prefabricated rods manufacturing processed weight alteration trend and target.Screw rod transmission motor 7 drive lead screws 8 move, suitable by screw mandrel 8, be rotated counterclockwise, and drive stationary installation 12 to move left and right.Reaction is fixed in stationary installation 12 with blowtorch 9 and evaporating pot 10, between blowtorch 9 and evaporating pot 10, is connected by unstripped gas pipeline 14.The general gas that blowtorch 9 uses carries out outside with general air pipe 15 and carries.Stationary installation 12 is moved by screw mandrel linkage system and screw mandrel 8 level of synchronization together with blowtorch 9 and evaporating pot 10.
Described heating jacket adopts alternating current 220V voltage, 200 DEG C of the heating upper limits.
Described screw mandrel linkage system adopts screw rod transmission nut.
The outside alternating current 220V voltage that adopts of unstripped gas pipeline between evaporating pot and blowtorch, after 220 DEG C of heating jackets of the heating upper limit wrap up, periphery is wrapped up quartzy insulating cotton again.
The preparation method of the efficient Preparation equipment of a kind of preform surrounding layer is as follows:
1) in evaporating pot, temperature is controlled at 185～195 DEG C, and between evaporating pot and blowtorch, pipeline temperature is controlled at 195～205 DEG C;
2) in equipment outer gland sealing cavity, open air draft, keeping negative pressure in cavity is 40Pa;
3) length of making is the prefabricated rod mandrel that 3000mm, diameter are 45 ~ 50mm;
4) plug two ends are clamped in chuck draw-in groove, chuck rotation speed setting is 50rpm, opens chuck rotation;
5) obstructed raw material, blowtorch gait of march is set 400mm/min.Blowtorch igniting is from starting plug to carry out calcination apart from plug left end 400mm position, and calcination always, to apart from plug right-hand member 400mm position, is carried out polishing to plug.Polishing flow: H
2: 230L/min, O
2: 115L/min, removes the impurity of mandrel surface.After polishing, close flame;
6) blowtorch is moved to apart from plug left end 400mm position, deposition blowlamp is lighted a fire;
7) start " operation automatically " button, depositing device chuck starts rotation with the rotating speed of 50rpm, and quartzy blowtorch starts at mandrel surface deposition SiO with the translational speed of 400mm/min
2powder.Quartz blowtorch is set flow: siliceous hydrocarbon polymer (as: C
8h
24o
4si
4): 100g/min, H
2: 150L/min, O
2: 75L/min, N
2: 20L/min, Ar:20L/min;
8) deposition reaction reaches after goal-selling weight, and blowtorch automatically cuts out flame and stops deposition.Chuck continues to stop the rotation after rotation 3min, for reducing Powder Rod surface temperature;
9) after continuing cooling 40min, prepare preform surrounding layer, the prefabricated rods for preparing surrounding layer is unloaded to equipment and carry out next step sintering processes.
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Under normal temperature, liquid methyl cyclopolysiloxane is delivered in moving evaporation tank 10 by pipeline 13.Moving evaporation tank is fixed on fixed support 12.The external parcel heating unit 11 of evaporating pot, flashes to gaseous state for heating raw materials, and Heating temperature is set as 190 DEG C.Gaseous feed is delivered to blowtorch mouth by the unstripped gas pipeline 14 between evaporating pot and blowlamp 9 and reacts, and pipeline external parcel heating zone, insulating cotton keep raw material gaseous state not liquefy, and heating zone Heating temperature is set as 200 DEG C.Blowtorch has many pipelines 17 outward for other reactant gases H
2, O
2, N
2deng conveying.
When normal production, the plug 6 use chucks 4 that VOD method is prepared from clamp.Driving motor 2 drives the speed rotation of chuck with 50rpm.Weighing scale 3 is placed in chuck and driving motor below, and upper weight limit is selected 200kg, for monitoring in real time prefabricated rods weight; Blowtorch moves aspect, and driving motor 7 drives screw mandrel 8 to rotate, and screw rod transmission moves left and right to fixed support 12, and blowtorch and evaporating pot are fixed in stationary installation and are synchronized with the movement simultaneously, and blowtorch gait of march is controlled at 380mm/min～450mm/min.Between blowtorch and evaporating pot, unstripped gas length of pipe is fixed, and length is controlled in 300mm, guarantee from evaporating pot to unstripped gas pipeline between blowtorch in methyl cyclopolysiloxane be all gaseous state, improve speed of reaction, reduce blowtorch mouth and line clogging probability simultaneously.This equipment is positioned at sealed reaction cavity 1, and while normally production, the relative negative pressure of cavity remains on 40Pa.
Described blowtorch 9 inside are provided with many tubules 16, and bending angle is enlarged to 38 °, and blowtorch middle part is provided with blowtorch raw material pipeline 18, makes flame kernel more concentrated.Blowtorch has many pipelines 17 outward, is provided with many tubules 16 and is connected, for other reactant gases H with blowtorch 9 inside
2, O
2, N
2deng conveying.
Preparation, reaction blowtorch left and right constant speed by blowlamp moves, negative pressure keeps the key parameter such as stable in the rotation of plug constant speed, the weight of monitoring deposition in real time, cavity, the prefabricated rods surrounding layer powder 5 of preparing pile up be more evenly distributed, the fluctuation of excellent footpath is more stable.
Embodiment 1: select prestox ring four oxosilanes as starting material; 190 DEG C of evaporating pot design temperatures; Pipeline external parcel heating zone, 200 DEG C of Temperature Settings; Blowtorch gait of march is set 400mm/min; 50rpm is set in chuck rotation; In cavity, negative pressure keeps 40pa; Use new high-efficiency blowtorch, in prestox ring four oxosilane pipelines, pass into H
2deposit ten rods.Under existing working condition, select SiCl
4for raw material, reduce vaporization temperature to 80 DEG C, deposit equally ten rods.The comparing result of sedimentation effect, speed is as shown in table 1.Table medium-rate is the weight (g) that in the unit time, (min) surrounding layer increases, and efficiency is the ratio (%) between stockpile accumulated amount and usage quantity.
Table 1 sedimentation effect, speed contrast
By contrast, novel appts and novel process promote amplitude approximately more than 750% by the surrounding layer sedimentation rate of prefabricated rods.
Embodiment 2: select prestox ring four oxosilanes of purity 99% as starting material; 190 DEG C of evaporating pot design temperatures; Unstripped gas pipeline external parcel heating zone, 200 DEG C of Temperature Settings; Use ten rods of new high-efficiency blowtorch deposition, use equally ten rods of old blowtorch deposition.Sedimentation effect, speed and table 1 comparing result are as shown in table 2.
Table 2 sedimentation effect, speed contrast
By contrast, blowlamp sedimentation rate promotes about 23g/min (2.8%), and sedimentation effect promotes approximately 25.4%.
Claims (5)
1. the efficient Preparation equipment of preform surrounding layer, is characterized in that: comprise equipment outer gland sealing cavity, driving motor, weighing scale, chuck, screw rod transmission motor, screw mandrel, blowtorch, evaporating pot, heating unit, stationary installation, feed line road, unstripped gas pipeline and general air pipe;
Described heating unit comprises heating jacket, quartzy insulating cotton, and heating jacket is evenly wrapped in evaporating pot outside, and quartzy insulating cotton is evenly wrapped in heating jacket outside;
Described stationary installation comprises through metal, screw mandrel linkage system, evaporating pot is arranged on through metal, blowtorch is arranged on the through metal on evaporating pot top, screw mandrel linkage system is equipped with in through metal bottom, screw mandrel linkage system is arranged on screw mandrel, screw mandrel is connected with screw rod transmission motor, and screw rod transmission motor-driven screw mandrel drives stationary installation to move as level of synchronization together with blowtorch and evaporating pot by screw mandrel linkage system; Between blowtorch and evaporating pot, adopt unstripped gas pipeline to be connected;
Prefabricated rod mandrel two ends clamping is on the chuck being arranged in equipment outer gland sealing cavity, driving motor is connected with one of them chuck, wherein after chuck clamping plug, driving motor drives chuck at the uniform velocity to rotate, driving motor and chuck below erection weight meter, stop weight confirmation for Real-time Feedback prefabricated rods manufacturing processed weight alteration trend and target, the motion of screw rod transmission motor-driven screw mandrel, suitable by screw mandrel, be rotated counterclockwise, drive stationary installation moves left and right, reaction is fixed in stationary installation with blowtorch and evaporating pot, between blowtorch and evaporating pot, be connected by unstripped gas pipeline, the general gas that blowtorch uses carries out outside with general air pipe and carries, stationary installation is by screw mandrel linkage system and the motion of screw mandrel level of synchronization.
2. the efficient Preparation equipment of a kind of preform surrounding layer according to claim 1, is characterized in that: described heating jacket adopts alternating current 220V voltage, 200 DEG C of the heating upper limits.
3. the efficient Preparation equipment of a kind of preform surrounding layer according to claim 1, is characterized in that: described screw mandrel linkage system adopts screw rod transmission nut.
4. the efficient Preparation equipment of a kind of preform surrounding layer according to claim 1, it is characterized in that: the outside alternating current 220V voltage that adopts of unstripped gas pipeline between evaporating pot and blowtorch, after 220 DEG C of heating jackets of the heating upper limit wrap up, periphery is wrapped up quartzy insulating cotton again.
5. the efficient Preparation equipment of a kind of preform surrounding layer according to claim 1, is characterized in that: described blowtorch inside is provided with many tubules, bending angle is enlarged to 38 °, and blowtorch middle part is provided with blowtorch raw material pipeline; Blowtorch has many pipelines outward, is provided with many tubules is connected with blowtorch inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320861524.0U CN203668234U (en) | 2013-12-25 | 2013-12-25 | Efficient equipment for preparing external coating of optical fiber preform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320861524.0U CN203668234U (en) | 2013-12-25 | 2013-12-25 | Efficient equipment for preparing external coating of optical fiber preform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203668234U true CN203668234U (en) | 2014-06-25 |
Family
ID=50964550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320861524.0U Expired - Lifetime CN203668234U (en) | 2013-12-25 | 2013-12-25 | Efficient equipment for preparing external coating of optical fiber preform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203668234U (en) |
-
2013
- 2013-12-25 CN CN201320861524.0U patent/CN203668234U/en not_active Expired - Lifetime
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Owner name: ZHONGTIAN SCIENCE AND TECHNOLOGY CO LTD, JIANGSU Z Effective date: 20150420 |
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Effective date of registration: 20150420 Address after: 226009 Nantong economic and Technological Development Zone, Jiangsu Zhongtian Road, No. 3 Patentee after: ZHONGTIAN TECHNOLOGY ADVANCED MATERIALS Co.,Ltd. Patentee after: JIANGSU ZHONGTIAN TECHNOLOGY Co.,Ltd. Patentee after: ZHONGTIAN TECHNOLOGY FIBER POTICS Co.,Ltd. Address before: 226009 Nantong economic and Technological Development Zone, Jiangsu Zhongtian Road, No. 3 Patentee before: ZHONGTIAN TECHNOLOGY ADVANCED MATERIALS Co.,Ltd. |
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