CN102173603A - Full-automatic high-speed wire drawing curing system - Google Patents
Full-automatic high-speed wire drawing curing system Download PDFInfo
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- CN102173603A CN102173603A CN2010105837635A CN201010583763A CN102173603A CN 102173603 A CN102173603 A CN 102173603A CN 2010105837635 A CN2010105837635 A CN 2010105837635A CN 201010583763 A CN201010583763 A CN 201010583763A CN 102173603 A CN102173603 A CN 102173603A
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Abstract
The invention relates to a full-automatic high-speed wire drawing curing system. The system comprises a curing oven, and a proportion integration differentiation (PID) controller of the curing oven; the PID controller of the curing oven is connected with a central controller of a wire drawing tower; and the central controller of the wire drawing tower is provided with a recorder which is used for displaying the current warning and running conditions; and an optical coating surface dust monitoring device, a curing oven internal ultraviolet light power monitor, a curing oven internal ultraviolet light power regulator, a curing oven oxygen content monitor, a curing oven internal protection air flow regulator, a curing oven internal fume extraction pressure monitor, a curing oven internal fume extraction pump, and a curing oven internal particle number monitor are directly connected with the PID controller of the curing oven respectively. The system monitors the state of an ultraviolet light curing oven and the state of the optical fiber every time when the ultraviolet light curing oven rotates, and performs real-time adjustment according to the monitoring data, so that the curing quality of the coating is guaranteed in the wire drawing process of the optical fiber, and the post-screening step is saved.
Description
Technical field
The present invention relates to the coating and the curing technology field of optical fiber in the fiber draw process, is a kind of fully automatic high-speed wire drawing cure system specifically.
Background technology
Along with the fibre-optical drawing technology develops to high speed, extra long distance direction, how can optical fiber be carried out high-quality, long, stabilizing effective curing after applying, to become the key issue that the restriction people ensure optical fiber quality, raising fibre-optical drawing yield rate, reduce the optical fiber cost.
In fiber draw process, the coating of optical fiber and curing technology are very crucial links.Because bare fibre is when directly being exposed to the external world, a little less than being highly brittle, therefore in the preparation process of optical fiber, must coats protective coating and coating is solidified bare fibre.Simultaneously,, can optimize the mechanical property of optical fiber greatly, strengthen the transverse property of optical fiber, thereby promote the overall performance of optical fiber comprehensively by applying and curing process.
The curing process of optical fiber adopts ultraviolet light polymerization technology usually, utilizes the ultraviolet light polymerization stove that the protective coating of optical fiber outside surface is cured and makes it form fibre coating.If fibre coating solidifies bad, then will cause optical fiber surface smooth finish relatively poor, optical fiber glues hand, and the optical fiber curing degree is not enough, and lateral pressure resistant power is not strong, has a strong impact on thereby subsequent handling caused.For example, cause the optical fiber after-combustion bad, influence optical fiber coloring, serious even may cause the optical fiber residual mechanical stress excessive, influence the transmission performance of optical fiber; What is more, and fibre coating solidifies bad meeting and causes the mechanical fiber optic degradation, and optical fibre installation does not then promptly rupture in the life-span after becoming optical cable, causes communication interruption.
Therefore, various countries' fiber manufacturers ring of all the curing quality of fibre coating being considered as controlling.Fiber manufacturers is maintained strict control over outside the gate of the quality monitoring except when selecting coating, also continually develops the fibre coating curing technology.For example increase the quantity of ultraviolet light polymerization stove, strengthen the curing power of ultraviolet light polymerization stove, increase curing oven protection air-flow, reduce the oxygen level in the curing oven, increase the curing oven cooling wind pressure, stable curing furnace control system or the like.
In this respect, all there is relevant patented technology in a lot of large manufacturers.But these technology all can get into trouble in actual applications, because the user mode of ultraviolet light polymerization stove is to change along with the passing of duration of service is continuous.In ultraviolet light polymerization stove operation process,, gas leakage dirty such as dirty, the quartzy pipe core of reflector, smoking pressure change or the like many uncontrollable factors can take place.These factors will influence fibre coating and solidify quality as long as any one takes place, and cause the coating curing degree bad.Therefore, a lot of producers also adopt the mode of screening afterwards on the basis of these patented technologies, defective products is rejected.Because generally more than the 100km rank, this mode of screening afterwards has omission to drawing optical fibers length unavoidably.
Summary of the invention
At the defective that exists in the prior art, the object of the present invention is to provide a kind of fully automatic high-speed wire drawing cure system, ultraviolet light polymerization stove running all the time all to its state, the state of optical fiber is monitored, and according to the monitoring data regulate in real time, thereby make optical fiber in the stringy process, just ensure the coating curing quality, need not to screen afterwards.
For reaching above purpose, the technical scheme that the present invention takes is:
A kind of fully automatic high-speed wire drawing cure system is characterized in that, comprising:
The digital treating meter 25 that is built-in with the analysis conclusion of great number tested data obtains pressure sensitive data and fine resolution data from the guide wheel of fibre coating dust inductor block 26,
Obtain dust situation judged result after 25 pairs of data analyses of digital treating meter, and dust situation judged result sent into fibre coating surface dust monitor 11,
Fibre coating surface dust monitor 11 analyzes dust according to dust situation judged result and whether exceeds standard, and the dust warning signal that exceeds standard is sent into curing oven PID controller 3,
Curing oven PID controller 3 is connected with wire-drawer-tower central controller 2, and whether the warning that exceeds standard is eliminated and sent alarm to wire-drawer-tower central controller 2 and remove instruction or shut down maintenance instruction according to dust,
Wire-drawer-tower central controller 2 is provided with the registering instrument 1 that is used to show current alarm and running condition,
Protect smoking pressure monitor device 8 in airshed setter 10, the curing oven, the interior smoking pump 7 of curing oven, curing oven endoparticle to count monitor 6 and directly be connected with curing oven PID controller 3 respectively in the interior uv power monitor 4 of curing oven, the curing oven in uv power setter 5, curing oven oxygen level monitor 9, the curing oven.
On the basis of technique scheme, in the described curing oven 18, a built-in uv power monitoring device 14,
The uv power that preceding power inductor 12 monitoring ultraviolet tubes 28 reflect through front-reflection cover 29,
After the luminous power that back power inductor 13 monitoring ultraviolet tubes 28 send is passed the quartzy pipe core 27 of protection optical fiber 37, the uv power that reflects through back reflection cover 30 again;
The uv power that preceding power inductor 12 and back power inductor 13 are measured is sent to uv power monitor 4 in the curing oven through uv power monitoring device 14,
Curing oven control power supply 17 provides electric power for the ultraviolet tube 28 in the curing oven 18.
On the basis of technique scheme, described curing oven 18 is supporting the protection of curing gas supplementary unit, and described curing protection gas supplementary unit is located at quartzy pipe core 27 two ends, comprises supplementary unit housing 32,
Be provided with embedded guide 33 in the supplementary unit housing 32,
Protection gas ingress pipe 31 is communicated with embedded guide 33, and embedded guide 33 lower ends are communicated with quartzy pipe core 27,
Also be provided with an atmosphere delivery line 15 on the supplementary unit housing 32, atmosphere delivery line 15 1 ends are communicated with quartzy pipe core 27, and the other end is communicated with oxygen analysis instrument 16,
Be located at the curing of quartzy pipe core 27 upper ends and protect on the protection gas ingress pipe 31 of gas supplementary unit, be provided with first mass flow controller 20;
Be located at the curing of quartzy pipe core 27 lower ends and protect on the protection gas ingress pipe 31 of gas supplementary unit, be provided with second mass flow controller 22;
The control that first, second mass flow controller 20 and 22 is accepted protection airshed setter 10 in the curing oven realizes the adjusting of protection airshed.
On the basis of technique scheme, described curing oven 18 is supporting the curing oven supplementary unit, and described curing oven supplementary unit is provided with granule number monitoring delivery line 34, smoke exhaust pipe 21,
Granule number monitoring delivery line 34 1 ends are communicated with quartzy pipe core 27, and the other end is communicated with gas particles analyser 19,
Pressure monitor table 23 sends to smoking pressure monitor device 8 in the curing oven through air-pressure electric-control transfer equipment 24 with pressure data.
Fully automatic high-speed wire drawing cure system of the present invention, ultraviolet light polymerization stove running all the time all to its state, the state of optical fiber is monitored, and according to the monitoring data regulate in real time, thereby make optical fiber in the stringy process, just ensure the coating curing quality, need not to screen afterwards.
The present invention has realized high-speed wire-drawing system fibre coating is solidified the omnidistance real-time automatic tracking of quality; regulate control by intelligence to uv power (curing power), oxygen level, protection airshed, curing oven smoking pressure, curing oven endoparticle quantity, optical fiber external coating (EC) (coatingsurface) dust situation; in the high-speed wire-drawing operation process; effectively ensure the fibre coating degree of cure and curing quality produced, the non-defective unit curing optical fiber with 100% flows into next process.
The present invention has following beneficial effect:
(1) the invention solves in the drawing optical fibers process a difficult problem to optical fiber curing degree and the on-line monitoring of fibre coating quality;
(2) the present invention can improve the optical fiber curing degree by online in real time adjustment uv power in the drawing optical fibers process;
(3) the present invention can online in real time adjustment protection airshed improve curing oven oxygen level state in the drawing optical fibers process, improves fibre coating surface cure quality;
(4) the present invention can be in the drawing optical fibers process online in real time adjustment smoking pressure improve the curing oven endoparticle and count content, firm fibre coating solidifies quality;
(5) the present invention can be in the drawing optical fibers process on-line monitoring ultraviolet light polymerization stove behaviour in service; at reflector; the center silica tube; the curing oven oxygen level; curing oven protection gaseity; the curing oven air-tight state; different links such as curing oven smoking state are sent corresponding alarm message; thereby in time send the early warning notice that is accurate to a little; tell which concrete link generation problem technologist's ultraviolet light polymerization stove is; thereby accelerate system maintenance speed; improve the system maintenance quality; further the lifting system use properties is fully created favorable factor and is drawn high-quality optical fiber.
Description of drawings
The present invention has following accompanying drawing:
The structural representation of Fig. 1 fully automatic high-speed wire drawing cure system,
Fig. 2 curing oven front elevational schematic,
The structural representation of Fig. 3 curing oven uv power monitoring device,
Fig. 4 solidifies the structural representation of protection gas supplementary unit,
The structural representation of Fig. 5 curing oven endoparticle quantity monitoring device.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
Inventive point of the present invention is at the wire drawing curing process, and the details of relevant coating does not belong to content of the present invention.Alleged herein curing oven all refers to the ultraviolet light polymerization stove if no special instructions.
In the pulling process of optical fiber, the degree of cure of fibre coating is subjected to the influence of many-sided factor, and it is interrelated that these factors have, and what have independently works, concrete influence factor have following some:
(1) influence of ultraviolet light polymerization power of lamp tube
The UV-light that the ultraviolet light polymerization fluorescent tube radiates participates in solidifying.If uv power (curing power) is not enough, will cause UV-light not penetrate whole coating and promptly be digested, cause part depths coating not to be cured, quality is solidified in influence.If uv power (curing power) is too high, can cause that all polymkeric substance all are initiated curing in the coating, cause the fibre coating overcuring, quality is solidified in same influence.
(2) influence of reflector
Ultraviolet light polymerization fluorescent tube and optical fiber lay respectively on two focuses of oval reflector, and both are parallel to each other.Reflector makes the UV-light of irradiation optical fiber focus on and be reflected on the optical fiber, thereby improves usefulness, quickens to solidify.In actual production, dirty because reflector is subjected to external pollution on the one hand, cause catoptrical strength reduction, reduced solidification effect, therefore to keep the cleaning of reflector internal surface to guarantee the stability of UV (UV-light) curing process; On the other hand,, cause the focusing power of reflector to weaken, thereby the optical fiber curing rate is reduced because reflector distortion or working accuracy are not enough.
(3) influence of pipe core
When optical fiber passes the ultraviolet light polymerization stove, for preventing polluted by furnace air and vibration, often it is passed a pipe core, described pipe core is the quartz glass tube of certain diameter.So the transmittance of pipe core, clean level are to the curing outbalance of optical fiber.
(4) influence of air-flow
In the pipe core of ultraviolet light polymerization stove, often use rare gas element (as nitrogen) to keep away oxygen to quicken curing.The ultraviolet light polymerization stove of different structure send the mode difference of rare gas element.
With nitrogen is example, in general, the clean nitrogen of certain purity flows into from the pipe core bottom, last fire door is often installed extractor fan, the nitrogen that enters pipe core is arrived with layer flow mode go up fire door, thereby get rid of the oxygen of bringing into by optical fiber, and take the volatile matter in the coating out of, keep the cleanliness factor of pipe core and optical fiber.For guaranteeing the curing of optical fiber under the friction-motion speed, the flow of nitrogen and purity should be controlled within the specific limits.Too low as flow or purity, then make the oxygen level in the interior nitrogen of pipe core too high, cause solidifying bad; Too high as flow, then make optical fiber shake in the production process, cause fiber strength to reduce.In addition, have as pipe core and to break or seal badly, all can cause in the nitrogen oxygen level too high, cause solidifying bad.
When drawing speed when 1000m/min is following, the curing of fibre coating has higher degree of containing to the influence of above-mentioned factor; When drawing speed up promotes, when reaching 1500~2000m/min, be untreated as if above-mentioned factor, the fibre coating quality will therefore rapid deterioration.
At above-mentioned influence factor, the present invention monitors the uv power in the curing oven, oxygen level, protection airshed, curing oven smoking pressure, curing oven endoparticle quantity and optical fiber external coating (EC) (coatingsurface) dust situation; And monitor data fed back to central PID (Proportion Integration Differentiation Control, proportion integration differentiation control) Controlling System.The PID Controlling System is analyzed the data of these collections according to the rule of thumb data of a large amount of test accumulation, and makes corresponding adjustment, thereby effectively solves the unexpected situation in the drawing process, ensures that effectively fibre coating solidifies quality.
The present invention's each monitoring units such as uv power, oxygen level, protection airshed, curing oven smoking pressure, curing oven endoparticle quantity and optical fiber external coating (EC) (coatingsurface) dust situation that the optical fiber curing process is related combine; make fibre-optical drawing speed reach 1000m/min when above; can guarantee effectively that still fibre coating solidifies quality, ensure that the coating quality good article rate reached more than 99% when optical fiber dispatched from the factory.
Fully automatic high-speed wire drawing cure system of the present invention; comprise: curing oven and curing oven PID controller; curing oven PID controller is connected with the wire-drawer-tower central controller; the wire-drawer-tower central controller is provided with the registering instrument that is used to show current alarm and running condition, fibre coating surface dust monitor; uv power monitor in the curing oven; uv power setter in the curing oven; curing oven oxygen level monitor; protection airshed setter in the curing oven; smoking pressure monitor device in the curing oven; smoking pump in the curing oven; the curing oven endoparticle is counted monitor and directly is connected with curing oven PID controller respectively.Specifically, its structure comprises curing oven (ultraviolet light polymerization stove) 18 as shown in Figure 1, is provided with a fibre coating dust inductor block 26 below curing oven 18, described fibre coating dust inductor block 26 comprises two guide wheels that are provided with pressure inductor and fine resolution instrument
The digital treating meter 25 that is built-in with the analysis conclusion of great number tested data obtains pressure sensitive data and fine resolution data from the guide wheel of fibre coating dust inductor block 26,
25 pairs of data of digital treating meter (pressure sensitive data and fine resolution data) obtain dust situation judged result after analyzing, and dust situation judged result is sent into fibre coating surface dust monitor 11,
Fibre coating surface dust monitor 11 analyzes dust according to dust situation judged result and whether exceeds standard, and the dust warning signal that exceeds standard is sent into curing oven PID controller 3,
Curing oven PID controller 3 is connected with wire-drawer-tower central controller 2, and whether the warning that exceeds standard is eliminated and sent alarm to wire-drawer-tower central controller 2 and remove instruction or shut down maintenance instruction according to dust,
Wire-drawer-tower central controller 2 is provided with the registering instrument 1 that is used to show current alarm and running condition,
Protect smoking pressure monitor device 8 in airshed setter 10, the curing oven, the interior smoking pump 7 of curing oven, curing oven endoparticle to count monitor 6 and directly be connected with curing oven PID controller 3 respectively in the interior uv power monitor 4 of curing oven, the curing oven in uv power setter 5, curing oven oxygen level monitor 9, the curing oven; monitoring relevant parameters or transmission corresponding instruction see aftermentioned for details.
Optical fiber external coating (EC) (coatingsurface) dust situation monitor procedure is as follows:
1, the present invention is provided with a fibre coating dust inductor block 26 below curing oven 18, and optical fiber is behind overcuring, and through two guide wheels on the fibre coating dust inductor block 26, guide wheel is provided with pressure inductor and fine resolution instrument; Fibre coating dust inductor block 26 sends the data (pressure sensitive data and fine resolution data) that obtain to digital treating meter 25;
2, digital treating meter 25 is judged the dust situation according to the analysis conclusion of great number tested data, and judged result is issued fibre coating surface dust monitor 11;
3, if dust exceeds standard, then fibre coating surface dust monitor 11 is issued curing oven PID controller 3 with the dust warning signal that exceeds standard;
4, curing oven PID controller 3 sends instructions on the one hand wire-drawer-tower central controller 2 to show on registering instrument 1 this section optical fiber to scrap, regulate protection airshed setter 10 and the interior smoking pump 7 of curing oven in the curing oven on the one hand successively, and count monitor 6 interior oxygen level and the granule number improvement situation of monitoring curing oven in real time by curing oven oxygen level monitor 9 and curing oven endoparticle;
5, if through adjusting; the surface dust situation that fibre coating surface dust monitor 11 monitors is up to standard; then curing oven PID controller 3 sends alarm for wire-drawer-tower central controller 2 and removes instruction; if not up to standard, then curing oven PID controller 3 sends the shutdown maintenance instruction for wire-drawer-tower central controller 2.
On the basis of technique scheme, as shown in Figure 1, 2, 3, in the described curing oven 18, a built-in uv power monitoring device 14,
The uv power that preceding power inductor 12 monitoring ultraviolet tubes 28 reflect through front-reflection cover 29,
After the luminous power that back power inductor 13 monitoring ultraviolet tubes 28 send is passed the quartzy pipe core 27 of protection optical fiber 37, the uv power that reflects through back reflection cover 30 again;
The uv power that preceding power inductor 12 and back power inductor 13 are measured is sent to uv power monitor 4 in the curing oven through uv power monitoring device 14,
As previously mentioned, uv power monitor 4, the interior uv power setter 5 of curing oven all directly are connected with curing oven PID controller 3 in the curing oven,
Curing oven control power supply 17 provides electric power for the ultraviolet tube 28 in the curing oven 18.
The uv power monitor procedure is as follows:
1, in the curing oven 18, a built-in uv power monitoring device 14, power inductor 12 and back power inductor 13 before the inner end of uv power monitoring device 14 divides former and later two faces to be placed with, the uv power that preceding power inductor 12 monitoring ultraviolet tubes 28 reflect through front-reflection cover 29, the luminous power that back power inductor 13 monitoring ultraviolet tubes 28 send is passed the quartzy pipe core 27 of protection optical fiber 37 after the uv power that back reflection cover 30 reflects;
2, preceding power inductor 12 and the back uv power measured of power inductor 13 are sent to uv power monitor 4 in the curing oven through uv power monitoring device 14, feed back to curing oven PID controller 3 by uv power monitor 4 in the curing oven;
When 3, the luminous power that power inductor 12 and/or back power inductor 13 send before monitoring was on the low side, curing oven PID controller 3 sent the power adjustment and instructs to uv power setter 5 in the curing oven;
4, in the curing oven uv power setter 5 power is adjusted instruction transformation is electric current and voltage adjustment instruction, be transferred to curing oven control power supply 17 again;
5, curing oven control power supply 17 is adjusted power supply output according to electric current and voltage adjustment instruction, adjusted power supply is flowed to ultraviolet tube 28 in the curing oven 18, thereby make the ultraviolet tube 28 in the curing oven 18 strengthen uv power output, to reach service requirements;
If 6 is still on the low side through the maximum power of power inductor 12 monitorings of adjusting before the back, then curing oven PID controller 3 sends fluorescent tube and reflector alarm command to wire-drawer-tower central controller 2;
7, wire-drawer-tower central controller 2 needs shutdown maintenance according to fluorescent tube and the prompting of reflector alarm command, and show that on registering instrument 1 uv power is on the low side, may be that ultraviolet tube 28 or front-reflection cover 29 need to change, simultaneously the optical fiber in the above-mentioned time period be done to report to the police and handle that this section optical fiber is scrapped;
If the power of 8 ultraviolet power inductor 12 monitorings after adjusting reaches requirement, the power of power inductor 13 monitoring then still is lower than service requirements, and then curing oven PID controller 3 sends quartzy pipe core and reflector alarm command to wire-drawer-tower central controller 2;
9, wire-drawer-tower central controller 2 needs shutdown maintenance according to quartzy pipe core and the prompting of reflector alarm command; and show that on registering instrument 1 uv power is on the low side; may be that quartzy pipe core 27 or back reflection cover 30 need to change; simultaneously the optical fiber in the above-mentioned time period is done to report to the police and handle, this section optical fiber is scrapped.
On the basis of technique scheme, shown in Fig. 1,4, described curing oven 18 is supporting the protection of curing gas supplementary unit, and described curing protection gas supplementary unit is located at quartzy pipe core 27 two ends, comprises supplementary unit housing 32,
Be provided with embedded guide 33 in the supplementary unit housing 32,
Protection gas ingress pipe 31 is communicated with embedded guide 33, and embedded guide 33 lower ends are communicated with quartzy pipe core 27,
Also be provided with an atmosphere delivery line 15 on the supplementary unit housing 32, atmosphere delivery line 15 1 ends are communicated with quartzy pipe core 27, and the other end is communicated with oxygen analysis instrument 16,
Be located at the curing of quartzy pipe core 27 upper ends and protect on the protection gas ingress pipe 31 of gas supplementary unit, be provided with first mass flow controller 20;
Be located at the curing of quartzy pipe core 27 lower ends and protect on the protection gas ingress pipe 31 of gas supplementary unit, be provided with second mass flow controller 22;
The control that first, second mass flow controller 20 and 22 is accepted protection airshed setter 10 in the curing oven realizes the adjusting of protection airshed.
It is as follows to solidify protection gas supplementary unit working process:
1, solidify protection gas supplementary unit and be provided with protection gas ingress pipe 31, protection gas enters embedded guide 33 through protection gas ingress pipe 31, and finally enters in the quartzy pipe core 27,
Simultaneously, atmosphere delivery line 15 imports to the gas in the quartzy pipe core 27 in the oxygen analysis instrument 16;
2, oxygen analysis instrument 16 is transferred to curing oven oxygen level monitor 9 with the oxygen level monitoring situation that analysis obtains, and curing oven oxygen level monitor 9 is converted to numerary signal with the oxygen level data and feeds back to curing oven PID controller 3;
3,3 pairs of data that obtain of curing oven PID controller are analyzed, if find that oxygen level is on the low side or higher, then send corresponding regulating command and give protection airshed setter 10 in the curing oven;
4, protection airshed setter 10 is issued first, second mass flow controller 20,22 with regulating command in the curing oven, transfers greatly or turn down the protection airshed;
5, protection gas then enters in the quartzy pipe core 27 along protection gas ingress pipe 31;
6, if through after maximum the adjustment, the oxygen level that curing oven oxygen level monitor 9 is analyzed is still higher, it is excessive that then 18 interior existence gas leakage of possibility curing oven or protection conductance are gone into not enough smoking pressure, curing oven PID controller 3 contrasts smoking pressure monitor device 8 and fibre coating surface dust monitoring device 11 in the curing oven simultaneously according to these situations, good as if the two data, then send the maintenance curing oven and whether exist gas leakage and protection conductance to go into whether to have problems signal to wire-drawer-tower central controller 2;
7, wire-drawer-tower central controller 2 is according to these signals information that gives a warning, and the prompting maintenance personnel need carry out above-mentioned processing, and on registering instrument 1 above-mentioned optical fiber is sent the key monitoring signal.If fibre coating surface dust monitor 11 feedback optical fiber surface dusts exceed standard, then on registering instrument 1, above-mentioned optical fiber is scrapped processing, and prompting needs emergency stop to safeguard.
On the basis of technique scheme, shown in Fig. 1,5, described curing oven 18 is supporting the curing oven supplementary unit, and described curing oven supplementary unit is provided with granule number monitoring delivery line 34, smoke exhaust pipe 21,
Granule number monitoring delivery line 34 1 ends are communicated with quartzy pipe core 27, and the other end is communicated with gas particles analyser 19,
Gas particles analyser 19 is counted monitor 6 to the curing oven endoparticle and is sent the amounts of particles data,
Pressure monitor table 23 sends to smoking pressure monitor device 8 in the curing oven through air-pressure electric-control transfer equipment 24 with pressure data.
Curing oven supplementary unit working process is as follows:
1, on the curing oven supplementary unit, is provided with granule number monitoring delivery line 34, smoke exhaust pipe 21, smoke exhaust pipe 21 is provided with curing oven smoking pressure survey export mouth 36, curing oven smoking pressure survey export mouth 36 is incorporated into gas on the pressure monitor table 23 through a pipeline, and the pressure data that obtains sends smoking pressure monitor device 8 in the curing oven to through air-pressure electric-control transfer equipment 24;
2, obtain the pressure of smoking after 8 pairs of pressure datas of smoking pressure monitor device are analyzed in the curing oven, smoking pressure sends curing oven PID controller 3 to;
3, find the smoking hypotony or when too high, send regulating command when curing oven PID controller 3 to curing oven smoking pump 7;
4, curing oven smoking pump 7 is extracted flue dust in the curing oven out by smoke exhaust pipe 21 through the smoking pipeline;
5, if through regulating to greatest extent, smoking pressure monitor device 8 still provides the hypotensive signal of smoking in the curing oven, curing oven PID controller 3 will need the instruction that curing oven smoking pump 7 and smoking pipeline are safeguarded is transferred to wire-drawer-tower central controller 2 on the one hand, and one side is monitored the curing oven endoparticle and counted monitor 6;
Show normally if the curing oven endoparticle is counted monitor 6, then on registering instrument 1, only point out this section optical fiber to pay close attention to; 6 demonstrations exceed standard if the curing oven endoparticle is counted monitor, and then wire-drawer-tower central controller 2 sends needs to shut down the warning of safeguarding, this section optical fiber is done scrapped processing simultaneously;
6, the curing oven supplementary unit is provided with granule number monitoring delivery line 34, gas is imported in the gas particles analyser 19 through piping;
7, gas particles analyser 19 sends the data that obtain to the curing oven endoparticle and counts monitor 6;
8, the curing oven endoparticle count 6 pairs of data of monitor analyze after with conversion of signals for having the numerary signal of same communication protocol with curing oven PID controller 3;
9, according to this numerary signal, if curing oven PID controller 3 is found the signal that obtains and is shown that granule number is higher, then send instructions to smoking pump 7 in the curing oven on the one hand, the curing oven pressure of smoking is improved, send instructions on the other hand to protection airshed setter 10 in the curing oven, in curing oven oxygen level monitor 9 tolerance bands, reduce the protection airshed slightly, improve some oxygen levels;
10, curing oven PID controller 3 sends instruction for wire-drawer-tower central controller 2 to show that on registering instrument 1 this section optical fiber need pay close attention to, and warns;
11, if after overregulating, the curing oven endoparticle is counted monitor 6 and is sent the normal signal of curing oven endoparticle number, and then curing oven PID controller 3 sends to instruct and sounds all clear;
12, if after overregulating, the curing oven endoparticle is counted monitor 6 and is still sent the curing oven endoparticle number signal that exceeds standard, the data of uv power monitor 4 and fibre coating surface dust monitor 11 in the curing oven PID controller 3 contrast curing ovens, if the two is still normal, this section of demonstration optical fiber that then only sends instructions need be paid close attention to, and carries out maintenance of the equipment after the drawing end of warning;
13, if the data of interior uv power monitor 4 of curing oven or optical fiber surface dust monitor 11, this means that solidifying quality is in an unsure state near threshold value, then 3 alarms of curing oven PID controller need to shut down maintenance.
The working process of system can be summarized as follows shown in Fig. 1~5:
When uv power monitor 4 in the curing oven detects uv power when on the low side, heighten curing oven control power supply 17 by curing oven PID controller 3 by uv power setter 5 in the curing oven, add high-power output, and by the preceding power inductor 12 of curing oven optical power monitoring apparatus and the behaviour in service of back power inductor 13 monitoring reflectors and quartzy pipe core, send early warning signal in real time, prepare it is overhauled; When fibre coating surface dust monitoring device 11 detects the optical fiber dust when exceeding standard or exceeding standard by digital treating meter 25 and fibre coating dust inductor block 26; curing oven PID controller 3 allows first, second mass flow controller 20,22 regulate curing oven protection airshed by protection airshed setter 10 in the curing oven; reduce oxygen level; and by smoking pump 7 in the curing oven; increasing reduces the curing oven granule number from the draft of smoke exhaust pipe 21.Simultaneously, curing oven PID controller 3 sends optical fiber and scraps signal to wire-drawer-tower central controller 2,,, is cancelled optical fiber again and scraps signal after recovering normally its demonstration by registering instrument 1.In addition; when if the curing oven endoparticle is counted monitor 6 and is detected the curing oven endoparticle and exceed standard by gas particles analyser 19; to regulate curing oven protection gas; regulate in the curing oven oxygen level or regulate the smoking pressure by smoking pump in the curing oven 7, pressure data is monitored in real time by smoking pressure monitor device 8 in the curing oven and is fed back to curing oven PID controller 3.By above-mentioned adjusting, form the closed loop control system that the curing oven fibre coating solidifies quality.
Below be two specific embodiments
Embodiment one:
Optical fiber with the 1800m/min pulling process in, uv power is at 3.2w/cm in the curing oven
2Oxygen level is at 1.2ppm in the curing oven, curing oven curing oven smoking pressure is at 150Pa, curing oven endoparticle number is 1025, the optical fiber surface dust is 0.0009mm, when being drawn to 100km, fibre coating surface dust monitor 11 sends alarm: the optical fiber surface dust reaches 0.006mm, because near the limit of 0.01mm, curing oven PID controller 3 sends the optical fiber quality early warning, require wire-drawer-tower central controller 2 beginning to monitor display abnormality on the curve from 100km on the registering instrument 1 at the optical fiber surface dust, and according to internal algorithm, according to oxygen level data in the curing oven of oxygen level monitor 9 feedbacks, by protection airshed setter 10 in the curing oven, to feed the interior nitrogen flow of curing oven and rise to 100l/min, oxygen level will be dropped to 0.7ppm from 80l/min; Fibre coating surface dust monitor 11 feedback optical fiber surface dust situations are still at 0.005mm, it is limited to descend, then continue to promote curing oven curing oven smoking pressure to 200Pa, it is 2500 that the curing oven endoparticle is counted monitor 6 feedback granule numbers, and this value is smaller; Curing oven PID controller 3 requires curing oven control power supply 17 to promote output rating by curing oven uv power setter 5, thereby promotes uv power in the curing oven according to above-mentioned integrated information like this; Power inductor 12 power reach 4.0w/cm before uv power monitor 4 feedbacks in curing oven
2, back power inductor 13 reaches 3.6w/cm
2The time, the output of curing oven control power supply 17 firm powers.This moment, the optical fiber surface dust situation of fibre coating surface dust monitor 11 monitorings was reduced to 0.001mm.Curing oven PID controller 3 is removed alarm, and at this moment, fibre-optical drawing length is 102km.Wire-drawer-tower central controller 2 is removed abnormal indication at registering instrument 1 at the 102km place, and prompting need be handled or be scrapped especially from the 2km optical fiber of 100~102km.Because the difference power in the curing oven between the preceding power inductor 12 of uv power and the back power inductor 13 reaches 0.4w/cm
2, curing oven PID controller 3 can provide prompting, requires quartzy pipe core 27 and back reflection cover 30 in the curing oven to be checked, and done conscientious cleaning after this draws end replaceable in case of necessity new quartzy pipe core and reflector.
Embodiment two:
In fiber draw process, draw rate is at 1800m/min, and curing oven smoking pressure is 200Pa, and oxygen level is 0.6ppm in the curing oven, and nitrogen flow is 60l/min in the curing oven, and curing oven UV-light mean power is 3.0w/cm
2, two inductor block difference powers are 0.1w/cm
2, curing oven endoparticle number is 3000 grades, optical fiber surface dust situation is 0.002mm.Fibre-optical drawing is during to 500km, and the preceding power inductor 12 that uv power detects in the curing oven detects uv power and is reduced to 2.5w/cm
2, the uv power that back power inductor 13 detects is reduced to 2.4w/cm
2This moment, curing oven oxygen level monitor 9, the curing oven endoparticle is counted monitor 6 fibre coating surface dust monitors 11 feedback data and is not all changed, but, uv power just begun the uv power that draws because being lower than, curing oven PID controller 3 still provides the early warning signal that fibre coating solidifies quality, and wire-drawer-tower central controller 2 begins to provide the early warning demonstration that fibre coating solidifies quality from 500km on registering instrument 1.The technologist begins to pay close attention to the uv power of uv power monitoring device 4 feedbacks.The power supply 17 of curing oven control simultaneously begins to promote output rating.But along with the lifting of output rating, the uv power of uv power monitoring device 4 feedbacks does not increase, and along with the prolongation of the time of drawing, the uv power downward trend occurs on the contrary.When uv power drops to 2.0w/cm
2The time, curing oven PID controller 3 though judge that other monitoring optical fiber curing data Quality are all normal at this moment, because the uv power performance is unusual, sends the instruction that interruption draws and overhauls according to the correlation data of storage and the slope of decline then.Wire-drawer-tower central controller 2 interrupts drawing immediately.Technologist's emphasis immediately checks curing oven control power supply 17 and ultraviolet tube 28, finds that ultraviolet tube 28 goes wrong, changed new fluorescent tube after, draw again.
The present invention collects the various monitor datas in the curing oven earlier and gathers (by the uv power in each assembly monitor curing oven, oxygen level, protection airshed, curing oven smoking pressure, curing oven endoparticle quantity and optical fiber external coating (EC) dust situation); And monitor data fed back to central PID Controlling System; The rule of thumb data of a large amount of test accumulation of system's basis are analyzed the data of these collections, after intelligent computing and adjusting, send corresponding adjustment instruction, make curing oven be in normal operating conditions all the time; And in time each guard signal is sent to wire-drawer-tower master control system (working order that the result who obtains after the monitor data of curing oven determined according to great number tested data according to us converts it to quality monitoring demonstration of fibre coating solidified and curing oven shows the master control system that sends wire-drawer-tower to), the optical fiber quality that draws is monitored; Master control system shows on registering instrument (wire drawing key parameter real time record instrument) after with various state sets, corresponding operation mode is provided for operator and slip-stick artist, make the clear and definite system of slip-stick artist and operator need which kind of concrete maintenance, thereby effectively solve the unexpected situation in the drawing process, ensure that effectively fibre coating solidifies quality.
Described system characteristics are as follows:
1, can realize the highest 5w/cm of bringing up to of uv power
2Level, and at 1w/cm
2With 5w/cm
2Between smoothly controlled.
2, can realize the flow control of tolerance range at 0.1l/min, the protection gas of feeding is high-purity N
2, the protection gas the flow setting range at 20l/min between the 200l/min.
3, tester 14 occupy the center of 2 wires of quartzy pipe core 27 and ultraviolet tube 28.Ultraviolet tube 28 is in the focus of front-reflection cover 29, and quartzy pipe core is in the focus of back reflection cover 30.This device can be measured the minimum precision of uv power at 0.1mw/cm
2More than.When uv power is lower than 3w/cm
2The time provide guard signal.
4, can realize that precision reaches the oxygen level monitoring of 1ppm precision, and can explain respectively that when oxygen level was lower than 0.1ppm, this device can send signal on the low side, can send higher signal when oxygen level is higher than 5ppm to each state of oxygen level.
5, can the monitor force precision be 0.1Pa, maximum monitor force be to 1000pa.In addition, this device continuous adjusting of pressure between from 10Pa to 1000Pa that can realize smoking.When smoking pressure is lower than 20Pa or is higher than 1000Pa, provide guard signal.
6, can carry out the wide region monitoring to curing oven endoparticle number.Monitor particles is counted maximum value can reach 100,000 grades.When the granule number of monitoring surpasses 5000 grades, the curing oven endoparticle is counted monitor 6 will send guard signal.
7, can stay dust granules when optical fiber passes inductor block 26, the treated device of induced signal 25 can send to fibre coating surface dust monitor 11 with the dust analysis situation after this is analyzed.When dust situation on the inductor block 26 surpassed 0.01mm, fibre coating surface dust monitor 11 sent guard signal.
Though invention has been described in conjunction with thinking the most practical embodiment and two the most frequently used embodiment at present, but the invention is not restricted to the disclosed embodiments, also comprised amplification implication and variation that the claims spirit and scope are included.
Claims (4)
1. a fully automatic high-speed wire drawing cure system is characterized in that, comprising:
Curing oven (18) is provided with a fibre coating dust inductor block (26) below curing oven (18), described fibre coating dust inductor block (26) comprises two guide wheels that are provided with pressure inductor and fine resolution instrument,
The digital treating meter (25) that is built-in with the analysis conclusion of great number tested data obtains pressure sensitive data and fine resolution data from the guide wheel of fibre coating dust inductor block (26),
Digital treating meter (25) is to obtaining dust situation judged result after the data analysis, and dust situation judged result is sent into fibre coating surface dust monitor (11),
Fibre coating surface dust monitor (11) analyzes dust according to dust situation judged result and whether exceeds standard, and the dust warning signal that exceeds standard is sent into curing oven PID controller (3),
Curing oven PID controller (3) is connected with wire-drawer-tower central controller (2), and whether the warning that exceeds standard is eliminated and sent alarm to wire-drawer-tower central controller (2) and remove instruction or shut down maintenance instruction according to dust,
Wire-drawer-tower central controller (2) is provided with the registering instrument (1) that is used to show current alarm and running condition,
Protect smoking pressure monitor device (8) in airshed setter (10), the curing oven, the interior smoking pump (7) of curing oven, curing oven endoparticle to count monitor (6) and directly be connected with curing oven PID controller (3) respectively in the interior uv power monitor (4) of curing oven, the curing oven in uv power setter (5), curing oven oxygen level monitor (9), the curing oven.
2. fully automatic high-speed wire drawing cure system as claimed in claim 1 is characterized in that: in the described curing oven (18), and a built-in uv power monitoring device (14),
The inner end of described uv power monitoring device (14) divides former and later two faces to be placed with preceding power inductor (12) and back power inductor (13),
The uv power that preceding power inductor (12) monitoring ultraviolet tube (28) reflects through front-reflection cover (29),
After the luminous power that back power inductor (13) monitoring ultraviolet tube (28) sends is passed the quartzy pipe core (27) of protection optical fiber (37), the uv power that reflects through back reflection cover (30) again;
The uv power that preceding power inductor (12) and back power inductor (13) are measured is sent to uv power monitor (4) in the curing oven through uv power monitoring device (14),
Uv power setter (5) is used for steering order is transferred to curing oven control power supply (17) in the curing oven,
Curing oven control power supply (17) provides electric power for the ultraviolet tube (28) in the curing oven (18).
3. fully automatic high-speed wire drawing cure system as claimed in claim 1; it is characterized in that: described curing oven (18) is supporting to have curing to protect the gas supplementary unit; described curing protection gas supplementary unit is located at quartzy pipe core (27) two ends, comprises supplementary unit housing (32)
Be provided with embedded guide (33) in the supplementary unit housing (32),
Supplementary unit housing (32) upper end is provided with the protection gas ingress pipe (31) of perpendicular connection,
Protection gas ingress pipe (31) is communicated with embedded guide (33), and embedded guide (33) lower end is communicated with quartzy pipe core (27),
Also be provided with an atmosphere delivery line (15) on the supplementary unit housing (32), atmosphere delivery line (15) one ends are communicated with quartzy pipe core (27), and the other end is communicated with oxygen analysis instrument (16),
Oxygen analysis instrument (16) sends the oxygen level data to curing oven oxygen level monitor (9),
Be located at the curing of quartzy pipe core (27) upper end and protect on the protection gas ingress pipe (31) of gas supplementary unit, be provided with first mass flow controller (20);
Be located at the curing of quartzy pipe core (27) lower end and protect on the protection gas ingress pipe (31) of gas supplementary unit, be provided with second mass flow controller (22);
The control that protection airshed setter (10) in the curing oven is accepted in first, second mass flow controller (20) and (22) realizes the adjusting of protection airshed.
4. fully automatic high-speed wire drawing cure system as claimed in claim 1 is characterized in that: described curing oven (18) is supporting to have curing oven supplementary unit, described curing oven supplementary unit to be provided with granule number monitoring delivery line (34), smoke exhaust pipe (21),
Smoke exhaust pipe (21) is provided with curing oven smoking pressure survey export mouth (36),
Granule number monitoring delivery line (34) one ends are communicated with quartzy pipe core (27), and the other end is communicated with gas particles analyser (19),
Gas particles analyser (19) is counted monitor (6) to the curing oven endoparticle and is sent the amounts of particles data,
Smoke exhaust pipe (21) one ends are communicated with quartzy pipe core (27), and the pressure detection end is connected with pressure monitor table (23) through curing oven smoking pressure survey export mouth (36), and the end of smoking is connected with smoking pump (7) in the curing oven,
Pressure monitor table (23) sends to smoking pressure monitor device (8) in the curing oven through air-pressure electric-control transfer equipment (24) with pressure data.
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CN102495451A (en) * | 2011-11-25 | 2012-06-13 | 四川飞普科技有限公司 | Automatic vertical sectional bake glue curing machine and operation method thereof |
TWI472892B (en) * | 2013-03-21 | 2015-02-11 | Inventec Appliances Corp | Automatic alerting method for exceedance of defective product threshold |
CN105271708A (en) * | 2015-11-18 | 2016-01-27 | 通鼎互联信息股份有限公司 | Device for preventing blow-by oxidation of optical fiber wire drawing furnace and control method |
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TWI472892B (en) * | 2013-03-21 | 2015-02-11 | Inventec Appliances Corp | Automatic alerting method for exceedance of defective product threshold |
CN105716782A (en) * | 2014-12-05 | 2016-06-29 | 周峰 | Fiber grating wind pressure sensor |
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CN108609868A (en) * | 2018-07-17 | 2018-10-02 | 长飞光纤光缆四川有限公司 | Novel optical fiber staining and curing stove |
CN111548027A (en) * | 2020-06-04 | 2020-08-18 | 深圳信息职业技术学院 | High-speed optical fiber drawing ultraviolet curing device |
CN112250318A (en) * | 2020-10-22 | 2021-01-22 | 武汉长盈通光电技术股份有限公司 | Ultraviolet curing full-closed-loop control device and method for optical fiber drawing |
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Effective date of registration: 20161222 Address after: 430074 East Lake Development Zone, Hubei, Optics Valley Venture Street, No. 67, No. Patentee after: Fenghuo Communication Science and Technology Co., Ltd. Patentee after: FiberHome Fujikura Optical Fiber Technology Co., Ltd. Address before: China Science and Technology Park Dongxin road East Lake Development Zone 430074 Hubei Province, Wuhan City, No. 5 Patentee before: Fenghuo Communication Science and Technology Co., Ltd. |