CN205368135U - Optical fiber perform optics parameter stability controlgear - Google Patents
Optical fiber perform optics parameter stability controlgear Download PDFInfo
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- CN205368135U CN205368135U CN201520968451.4U CN201520968451U CN205368135U CN 205368135 U CN205368135 U CN 205368135U CN 201520968451 U CN201520968451 U CN 201520968451U CN 205368135 U CN205368135 U CN 205368135U
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Abstract
The utility model relates to an optical fiber perform optics parameter stability controlgear. Detect and the treater including the deposition chamber body, exhaust pipe, exhaust pipe blast gate, blast gate opening controller, wind speed survey pole, blast gate aperture controller signal line, wind speed survey rod signal line and wind speed, directly over the deposition chamber body, along optical fiber perform axial horizontal installation root exhaust pipe, exhaust pipe inner wall installation wind speed survey pole, wind speed survey pole end is installed and is put at exhaust pipe central point, at wind speed survey pole top installation exhaust pipe blast gate, the blast gate aperture is controlled through outside blast gate opening controller, the temperature signal of wind speed survey pole pass through wind speed survey rod signal line connection to the wind speed detect and the treater in, the wind speed detects will instruct with the treater and feeds back to the blast gate opening controller through blast gate aperture controller signal line, the aperture of exhaust pipe blast gate is further controlled to the blast gate opening controller, the controlled wind speed.
Description
Technical field
The utility model relates to a kind of preform optical parametric stability control device.
Background technology
In existing preform surrounding layer manufacture method, outside vapor deposition (OVD) is to prepare the technique that preformod of optical fiber with low water peak cost performance is optimum.This technique uses oxyhydrogen flame to make SiCl4Raw material generation high-temperature hydrolysis, at the SiO of minor diameter mandrel outer surface depositing dosed quantities2Powder prepares powder preform, then uses the method identical with plug sintering that soot preforms sinters into transparent prefabricated rods, then through namely preparing preform after degassed process.
The H of outside vapor deposition (OVD) output2O, waste gas HCl, dust SiO2, got rid of by deposition chamber internal waste gas exhaust outlet.Prefabricated rods surrounding layer is in deposition process, and barred body airflow on surface can affect prefabricated rods surrounding layer surface deposition efficiency.Deposition chamber exhaust outlet generally adopts the pipeline of multiple same bore, at cavity top end horizontal arrangement.So be conducive to being internally formed stable air draft air-flow in deposition chamber.Along with SiO in exhaust outlet2The increase of dust, exhaust outlet internal diameter changes, and can cause that each exhaust outlet air draft wind speed produces to change.In prefabricated rods outer cladding deposition process, air draft wind speed inequality in barred body surface can cause that surrounding layer local deposits amount produces deviation, finally have impact on the optical parametric of prefabricated rods.
About the related process reducing the fluctuation of rod footpath, preform surface, mention in [CN103771696] patent, adopt lateral deposition in this patent, control prefabricated rods surface SiO mainly through controlling lamp move mode, coming and going the modes such as number of times2Accumulating amount, reduces the fluctuation of optical fiber prefabricating rod outside diameter.But the impact that the not mentioned air draft wind speed uniformity of this patent is on prefabricated rods surface deposition efficiency.
Summary of the invention
This utility model purpose is a kind of preform optical parametric stability control method and the equipment thereof of providing for above-mentioned weak point.
A kind of preform optical parametric stability control method and equipment thereof are to take techniques below scheme to realize:
A kind of preform optical parametric stability control device includes deposition chamber, exhaust duct, exhaust duct air-valve, valve area controller, anemometry bar, valve area controller signals line, anemometry bar holding wire and wind speed measurement and processor.
Directly over deposition chamber, installing many exhaust ducts along the axial level of preform, exhaust duct inwall installs anemometry bar, and anemometry bar end is arranged on exhaust duct center.At anemometry bar exhaust duct air-valve installed above, valve area is controlled by wind outside valve opening controller.The temperature signal of anemometry bar is connected in wind speed measurement and processor by anemometry bar holding wire.Instruction is fed back to valve area controller by valve area controller signals line by wind speed measurement and processor.Valve area controller controls the aperture of exhaust duct air-valve, controlled wind speed further.
A kind of preform optical parametric stability control method is as follows:
1) plug of preform is arranged in deposition chamber and prepares employing outside vapor deposition carries out outsourcing deposition (OVD)；
2) wind speed automatic control system is opened；
3) the many each measurement exhaust ducts of anemometry bar, by data feedback to measuring wind speed and processor；
4) wind speed that wind speed measurement and processor arrive according to initial stage measurement, automatically sets wind speed deviation bound ± 0.1%；
5) deposition blowlamp igniting, begins with outside vapor deposition (OVD) outsourcing deposition；
6) in deposition process, wind speed measurement and processor carry out data process according to the wind speed detected, it would be desirable to the signal adjusting valve area feeds back to valve area controller；
7) valve area controller adjusts the aperture adjustment wind speed of air-valve；
8) up-to-date air speed data is transferred to wind speed measurement and processor by anemometry bar again；
9) wind speed measurement and processor process signal again, provide latest command；
10) prefabricated rods deposition terminates, and closes automatic control system；
11) Powder Rod is after vitrification, namely prepares the preform that optical parametric is stable.
This utility model one preform optical parametric stability control method and equipment feature thereof:
Whether this utility model adopts real-time wind speed measuring device on-line monitoring prefabricated fiber rod depositing process apoplexy manage-style speed, can be maintained within certain fluctuation range by wind speed in each exhaust duct of effective monitoring.
This utility model adopts fluctuations in wind speed signal handling equipment, feeds back to valve area controller, can change exhaust duct valve area size accurately, in time after the signal processing that exceeds standard received.
This utility model, in prefabricated rods outer cladding deposition process, can effectively keep prefabricated rods axial surface wind speed to keep consistent, it is ensured that prefabricated rods each deposition site surface deposition efficiency keeps consistent, reach to control the prefabricated rods conforming purpose of entirety deposition.
Accompanying drawing explanation
Below with reference to accompanying drawing, the utility model is described in further detail:
Fig. 1 is depositing device schematic diagram of the present utility model.
Fig. 2 does not open air-valve to adjust the air monitoring schematic diagram of airduct immediately of function.
Fig. 3 is on air-valve and adjusts the wind speed measurement schematic diagram of airduct immediately of function.
Fig. 4 does not open air-valve to adjust the prefabricated stick footpath fluctuation schematic diagram of function.
Fig. 5 is on air-valve and adjusts the prefabricated stick footpath fluctuation schematic diagram of function.
In figure: 1, deposition chamber；2, exhaust duct；3, exhaust duct air-valve；4, valve area controller；5, anemometry bar；6, valve area controller signals line；7, analyzing rod holding wire；8, wind speed measurement and processor；
Detailed description of the invention:
Hereinafter just the utility model is described in further detail in conjunction with the accompanying drawings and embodiments:
With reference to accompanying drawing 1～5, a kind of preform optical parametric stability control device includes deposition chamber 1, exhaust duct 2, exhaust duct air-valve 3, valve area controller 4, anemometry bar 5, valve area controller signals line 6, anemometry bar holding wire 7, wind speed measurement and processor 8.
Installing many exhaust ducts 2 directly over deposition chamber 1, along the axial level of preform, exhaust duct 2 inwall installs anemometry bar 5, and anemometry bar 5 end is arranged on exhaust duct 2 center.At anemometry bar exhaust duct air-valve 3 installed above, valve area is controlled by wind outside valve opening controller 4.The temperature signal of anemometry bar is connected in wind speed measurement and processor 8 by anemometry bar holding wire 7.Instruction is fed back to valve area controller 4 by valve area controller signals line 6 with processor 8 by wind speed measurement.Valve area controller 4 controls the aperture of exhaust duct air-valve 3, controlled wind speed further.
In preform outer cladding deposition process, anemometry bar 5 measures wind speed in air draft airduct, transmits a signal to wind speed measurement and processor 8 by analyzing rod holding wire 7.Wind speed measurement and processor 8 see if fall out established standards according to wind speed undulating value in its unit interval after receiving signal.If beyond established standards, automatically calculate valve area and change angle, feedback signal is transferred to valve area controller 4 by valve area controller signals line 6.The signal that valve area controller 4 comes according to feedback, adjusts exhaust duct air-valve 3 folding angle.
After exhaust duct air-valve 3 adjusts, anemometry bar 5 continues to gather up-to-date air draft air speed data, and wind speed measurement and processor 8 control the folding angle of exhaust duct air-valve 3 further according to the data of up-to-date collection.
Described valve area controller 4 adopts the commercially available direct current drive valve positioner of high temperature resistant (≤150 DEG C) material, changes valve opening size by changing conduction time with direction.
Described anemometry bar 5 adopts commercially available rotary-type anemometry bar, can be high temperature resistant 350 DEG C.
Described wind speed measurement adopts supporting computer with processor, installs control program, by wind speed setting baseline values and span of control, on line real-time monitoring and adjustment valve area.
A kind of preform optical parametric stability control method is as follows:
1) plug of preform is arranged in deposition chamber 1 and prepares employing outside vapor deposition carries out outsourcing deposition (OVD)；
2) wind speed automatic control system is opened；
3) many anemometry bar 5 many exhaust ducts of each measurement, by data feedback to measuring wind speed and processor 8；
4) wind speed that wind speed measurement and processor 8 arrive according to initial stage measurement, automatically sets wind speed deviation bound ± 0.1%；
5) deposition blowlamp igniting, begins with outside vapor deposition (OVD) outsourcing deposition；
6) in deposition process, wind speed measurement and processor 8 carry out data process according to the wind speed detected, it would be desirable to the signal adjusting valve area feeds back to valve area controller 4；
7) valve area controller 4 adjusts the aperture adjustment wind speed of air-valve 3；
8) up-to-date air speed data is transferred to wind speed measurement and processor 8 by anemometry bar 5 again；
9) wind speed measurement and processor 8 process signal again, provide latest command；
10) prefabricated rods deposition terminates, and closes automatic control system；
11) Powder Rod is after vitrification, namely prepares the preform that optical parametric is stable.
Embodiment 1:
Opening wind speed measurement and processor 8 carries out wind speed and monitors in real time, shutdown signal feedback function, exhaust duct valve area keeps initial position motionless.
After deposition terminates, each airduct side-play amount is as follows with deposition result:
Wherein prefabricated fiber rod depositing amount offsets wind speed minimum offset 4# airduct position is that benchmark judges.Can be seen that the position of the bigger correspondence of wind speed side-play amount, there is bigger skew in prefabricated fiber rod depositing amount accordingly.
Contrasted by optical parametric side-play amount numerical value after prefabricated stick drawn wire, it has been found that the position that corresponding prefabricated rods deposition side-play amount is bigger, its optical parametric respective offsets amount is also bigger.
Embodiment 2:
Opening wind speed measurement and processor 8 carries out wind speed and monitors in real time, start signal feedback function, exhaust duct valve area is automatically adjusted online.
After deposition terminates, each airduct side-play amount is as follows with deposition result:
Wherein prefabricated fiber rod depositing amount offsets wind speed minimum offset 2# airduct position is that benchmark judges.Can be seen that fluctuations in wind speed controls about 0.1%, there is not bigger skew in prefabricated fiber rod depositing amount, is accurately controlled rod footpath fluctuation ratio and reaches less than 0.1%.
Contrasted by optical parametric side-play amount numerical value after prefabricated stick drawn wire, it has been found that its optical parametric and design load side-play amount control to reach less than 0.1%.
Claims (1)
1. a preform optical parametric stability control device, it is characterised in that: include deposition chamber, exhaust duct, exhaust duct air-valve, valve area controller, anemometry bar, valve area controller signals line, anemometry bar holding wire and wind speed measurement and processor；
Directly over deposition chamber, along the axial level of preform, many exhaust ducts are installed, exhaust duct inwall installs anemometry bar, anemometry bar end is arranged on exhaust duct center, at anemometry bar exhaust duct air-valve installed above, valve area is controlled by wind outside valve opening controller, the temperature signal of anemometry bar is connected to by anemometry bar holding wire in wind speed measurement and processor, instruction is fed back to valve area controller by valve area controller signals line by wind speed measurement and processor, valve area controller controls the aperture of exhaust duct air-valve further, controlled wind speed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520968451.4U CN205368135U (en) | 2015-11-30 | 2015-11-30 | Optical fiber perform optics parameter stability controlgear |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520968451.4U CN205368135U (en) | 2015-11-30 | 2015-11-30 | Optical fiber perform optics parameter stability controlgear |
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| CN205368135U true CN205368135U (en) | 2016-07-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105347667A (en) * | 2015-11-30 | 2016-02-24 | 中天科技精密材料有限公司 | Stability control method and device for optical parameters of optical fiber perform |
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- 2015-11-30 CN CN201520968451.4U patent/CN205368135U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105347667A (en) * | 2015-11-30 | 2016-02-24 | 中天科技精密材料有限公司 | Stability control method and device for optical parameters of optical fiber perform |
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