CN204385058U - The high-accuracy heating installation of middle infrared optical fiber wire-drawer-tower - Google Patents
The high-accuracy heating installation of middle infrared optical fiber wire-drawer-tower Download PDFInfo
- Publication number
- CN204385058U CN204385058U CN201420306790.1U CN201420306790U CN204385058U CN 204385058 U CN204385058 U CN 204385058U CN 201420306790 U CN201420306790 U CN 201420306790U CN 204385058 U CN204385058 U CN 204385058U
- Authority
- CN
- China
- Prior art keywords
- silica tube
- temperature
- accuracy
- heating
- optical fiber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Resistance Heating (AREA)
Abstract
The utility model discloses the high-accuracy heating installation of a kind of middle infrared optical fiber wire-drawer-tower, comprise arrange in the middle of body of heater, the diffuser at body of heater top, body of heater silica tube, be arranged on composite heating module in the middle part of silica tube outer wall; Described body of heater top is provided with upper flange plate, and upper flange plate is provided with diffuser, is provided with end closure on diffuser top, bottom of furnace body is provided with lower flange; Described upper flange plate center is provided with circular hole, lower flange center is provided with lower circular hole, upper bore edges is provided with annular groove, lower bore edges is provided with lower annular groove, silica tube top connects upper annular groove, silica tube bottom connects lower annular groove, silica tube is communicated with diffuser, quartzy casing pack rare gas element.High-accuracy heating installation of the present utility model can make without crystallization, the infrared sulphur system of string diameter stability contorting within the scope of ± 0.5 micron error, the optical fiber such as tellurate glass.
Description
Technical field:
The utility model relates to the high-accuracy heating installation of middle infrared optical fiber wire-drawer-tower in optical fiber manufacturing processes, be specially adapted to make without crystallization, the prefabricated rods furnace design method of the infrared optical fiber (sulphur system, the optical fiber such as tellurate glass) of string diameter stable (string diameter controls within the scope of ± 0.5 micron error).
Background technology:
The low-loss silica fiber technology that the seventies in last century is born and the utility model of the anhydrous silica fibre of ultra-low loss developed afterwards, lead human society to enter the epoch of optical communication.The brilliant historical continuity of silica fibre, by 2005, experienced by the development in the stages such as real core single mode/multimode optical fibers, photonic crystal fiber, large mould field optical fiber, bragg fiber, has seemed the end of its history.From the angle of materialogy, we can find that silica fibre is silicate glass (SiO
2for main component) the senior manifestation of one, variety protection is single.Current high-capacity optical fiber laser concentrates on 1-2 μm of near-infrared band mostly, and product is also laser carrier mainly with silica fibre.But due to silica fibre material restriction itself, its infrared wavelength can only to 2.2 microns by wavelength.Therefore, the research of optical fiber surmounts the narrow scope of silicate glass, just extends to the special glass optical fiber that the multicomponent glasses such as other oxide glasses, fluoride glass, chalcogenide glass are main body.At present, the U.S., Japan, Britain, Australia, France and the developed country such as German drop into the multicomponent glass optical fiber of huge fund research various uses one after another.Comprehensive various situation, we think that the step of multicomponent glass optical fiber industrialization is more and more nearer, are " second revolutions " after silica fibre in fiber optics industry process.
In 3-5 mu m waveband IR coherent light source be decay in an atmosphere in three air infrared windows (1-3 μm, 3-5 μm and 8-12 μm) minimum, and this wave band covers the absorption peak of many atoms and molecule, therefore this wave band is at photoelectronic warfare, target detecting, laser spectroscopy, earth exploration, atmospheric surveillance (particularly CO
2, H
2o and O
3), there are more and more important using value and the very important role of prospect performer in weather-forecast, Forest Fire Alarm, health care, the field such as wireless OCDMA and space optical communication.For example, remote sensing chemical sensitisation, the air pollution control detection of the obnoxious flavour such as formaldehyde, nitrogen protoxide, nitrogen peroxide, hydrogen sulfide, arsenous hydride of 10 –, 9 grades of content (in the environment), laser scalpel etc. are all the great demands involved the interests of the state and the people.Therefore have very large application prospect at the infrared optical fiber laser apparatus of 3-5 micron waveband, present stage mainly limits infrared optical fiber laser developments mainly operation material: infrared optical fiber.
Present stage can by the infrared optical fiber of practicality still in exploration, and infrared optical fiber is relative to quartz, and one of main drawback is exactly easy crystallization.How to draw the infrared optical fiber not having crystallization, the design of preform heating stove is vital.Present stage, the design of process furnace had many, but the infrared optical fiber drawn out exists a large amount of crystallizatioies, caused string diameter domain of walker large, occurred fracture, even cannot pull out optical fiber in pulling process.Therefore how to design reasonable infrared optical fiber prefabricated rods process furnace, be a very important problem for the infrared optical fiber drawn without crystallization, and there is very great meaning.
Utility model content:
For solving the defect existed in above-mentioned background technology, the utility model provides the high-accuracy heating installation of middle infrared optical fiber wire-drawer-tower, this high-accuracy process furnace can make without crystallization, the infrared optical fiber (sulphur system, the optical fiber such as tellurate glass) of string diameter stable (string diameter controls within the scope of ± 0.5 micron error).
The technical solution of the utility model is as follows:
The high-accuracy heating installation of middle infrared optical fiber wire-drawer-tower, comprise arrange in the middle of body of heater, the diffuser at body of heater top, body of heater silica tube, be arranged on composite heating module in the middle part of silica tube outer wall; Described body of heater top is provided with upper flange plate, and upper flange plate is provided with diffuser, is provided with end closure on diffuser top, bottom of furnace body is provided with lower flange; Described upper flange plate center is provided with circular hole, lower flange center is provided with lower circular hole, upper bore edges is provided with annular groove, lower bore edges is provided with lower annular groove, silica tube top connects upper annular groove, silica tube bottom connects lower annular groove, silica tube is communicated with diffuser, quartzy casing pack rare gas element.
Described silica tube top and upper circular groove by sealing-ring and silica gel sealing, silica tube bottom and lower circular groove by sealing-ring and silica gel sealing, the resistance to 200-250 of seal gum DEG C high temperature.
Described composite heating module comprises the heating ring being arranged on silica tube outside, the vitrified pipe being arranged on heating ring outer wall; Described ceramic tube inside is provided with resistance wire; Described heating ring and vitrified pipe are outside equipped with stainless steel cage, between stainless steel cage and vitrified pipe, be filled with refractory materials.
Described heating ring is made up of heat-resisting special steel, and its grade of steel is 301,302,304,309,310,408,600 or 630; Described refractory materials is ceramic block, asbestos or glass fibre.
Described heating ring is toroidal, and its internal diameter is 20-50mm, and external diameter is 35-60mm, and height is 60-85mm, and thickness is 3-25mm; The shape of cross section of described heating ring be ┃ ┃ shape, ┝ ┩ shape ,] [shape ,] [shape) (shape, " " shape or
shape.
Described resistance wire diameter is 0.5-20mm; The described resistance wire number of turns is 1-19 circle, adopts vertical emission type, Superimposed or stacking type arranged side by side.
Described vitrified pipe is ring-type, and its external diameter is 2-28mm, and internal diameter is 1.5-24mm.
Described high-accuracy composite heating module generation 1mm-20mm highest temperature platform, 12-35mm 20 degree of high temperature platforms, 20-40mm 50 degree lowers the temperature distributed area, and 45-65mm hundred degree lowers the temperature distributed area;
Or form 3mm-18mm highest temperature platform, 14-32mm 20 degree of high temperature platforms, 23-38mm 50 degree lowers the temperature distributed area, 46-62mm hundred degree lowers the temperature distributed area;
Or form 5mm-15mm highest temperature platform, 14-30mm 20 degree of high temperature platforms, 25-36mm 50 degree lowers the temperature distributed area, 48-60mm hundred degree lowers the temperature distributed area;
Or form 6mm-12mm highest temperature platform, 16-26mm 20 degree of high temperature platforms, 27-32mm 50 degree lowers the temperature distributed area, 50-55mm hundred degree lowers the temperature distributed area.
Described rare gas element is one or more in argon gas, nitrogen, helium.
Also be provided with a hollow stainless steel in described silica tube, infrared glass preform during stainless steel lower end connects, upper end connects valve tube, and valve tube connects vacuum pump.
Described special heating module is primarily of special steel (toroidal, steel internal diameter is 20-50mm, external diameter is 35-60mm, height is 60-85mm, thickness is 3-25mm), resistance wire (diameter of resistance wire is 0.5-20mm) and many vitrified pipes (external diameter of vitrified pipe is 2-28mm, and internal diameter is 1.5-24mm) of 3-16 circle form heating module.
Described heat-insulation system comprises refractory materials, glass fibre, insulation asbestos, refractory steel etc., and its mode of placing keeps being even, rotational symmetry.
Described tightness system is mainly through the silica tube of a collimation, and seal gum, the ring flange of sealing-ring and two pieces of special constructions realizes.
The described shielding gas recycle system mainly refers to how to make to keep no oxygen inside stove, and the ventilation design of few moisture, make the infrared prefabricated rods of blanketing with inert gas not oxidized, crystallization, whole shielding gas intake method has tilting, rotary, through type.
Described vacuum system mainly needs to regulate vacuum tightness to regulate the vacuum tightness in space between covering and core, not allow covering break when vacuumizing.
Described prefabricated rods send bar system mainly by controlling lifting device, can realize fast lifting, rise valency at a slow speed, and also can be implemented in 0.05-5mm/min and be elevated prefabricated rods, error is within 1%.
Above-mentioned special steel material can be model 301,302,304,309,408,600,630.The shape of special heating steel has " ┃ ", " ┝ ", " [", " [", ") " " " ", "
" etc. tens kinds.
Above-mentioned resistance wire is resistive heater, and size can be Φ 0.5,1,2,4,6,8,10,12,15,20 (mm) etc.
Above-mentioned lagging material adopts when stacking closely to be stacked, and discharge keeps very uniform, around symmetrical heating module.
Above-mentioned silica tube carries out flame collimation and the polished finish of internal surface high temperature.
Above-mentioned seal gum is resistant to elevated temperatures, can resistance to 200-250 DEG C high temperature.
Above-mentioned sealing-ring is when sealing, and adopts sealing silicone grease to seal.
Above-mentioned ventilating mode mainly adopts from the ventilation of stove upper end, gives vent to anger in lower end, and ventilate in lower end side, intake method has through type, tilting, rotary, the oxygen inside high temperature stove can be forced out intracavity gas completely so simultaneously.
Above-mentioned used shielding gas is argon gas (Ar) mainly, nitrogen (N
2), helium (He) can be a kind of gas, also can two kinds of mixed gass, also can be three kinds of mixed gass.
Form the high-accuracy heating installation of above-mentioned middle infrared optical fiber wire-drawer-tower, assemble in the steps below:
A) special heating steel is processed into annular.Insert diameter matches in heating steel inside, thickness is the silica tube of 2-6mm.Be the resistance wire of 2-20mm by whole diameter, wire up with vitrified pipe.String has the resistance wire of vitrified pipe according to special arrangement mode, is wrapped in special steel material outermost.
B) between special heating steel and silica tube, refractory materials (as ceramic block etc.) is filled up.Then outside whole heating module, lagging material is filled out, as: asbestos, glass fibre etc.Filling in the top and bottom of heating steel is 5-45mm thickness refractory materials (as ceramic block etc.).
C) wired up by whole hot spots stainless material, and whole process furnace hot spots is placed in a thick 2-4cm, the length of side is that on the square stainless steel of 14-20cm, center is hollow, and diameter is 28-40cm.
D) quartzy top and bottom are all connected two 25-28cm, the square flange of thick about 1.5-3cm, carve diameter at 25-35mm circular hole in square flange central authorities simultaneously, the circular ring slot of " U " shape is carved at bore edges, about groove depth 1mm, silica tube is stuck in groove, so that in fixing upper lower flange.
E) connect four diameter 2-3cm respectively in the corner of upper and lower two ends steel plate, the stainless steel solid cylinder that long 50-55cm is long is so that fixing whole prefabricated rods process furnace.
F) aperture of the left and right of 20-40 is bored at the upper surface of upper flange plate, at upper flanges dish upper surface, taking center as the center of circle, diameter is in 24-32mm circle, bore the air inlet port that 6-12 aperture is Φ 8,8-14 aperture is the air inlet port of Φ 4, and 12-20 aperture is the air inlet port of Φ 2, and 16-24 aperture is the air inlet port of Φ 1.2
G) on upper flange plate, connect the stainless steel cover (as shown in Figure 10) that a center is empty " convex " shape, the external diameter of lower end is 45-60mm, and internal diameter is 35-50mm, high 14-20mm, the internal diameter of upper end is 15-30mm, and external diameter is 35-50mm, high 35-45mm.In two holes of the upper end cover side face drilling symmetry of " convex " shape, aperture is at 6-12mm.
H) connect in the middle of the stainless steel cover of " convex " shape one hollow, the stainless steel of collimation, diameter 4-8mm, internal diameter is 2-6mm, and it is fixed control by flange, and flange is controlled by jacking system; Infrared glass preform during stainless steel lower end connects, upper end connects valve tube, and valve tube connects vacuum pump.
I) be empty at the direct center of the ring flange of lower end, the empty circular diameter in center is 30-40mm.
The beneficial effects of the utility model are as follows:
1, very symmetrical temperature distribution is interval.The utility model adopts special heating steel, be conducive to formation stable, symmetrical temperature distribution, namely on same circle, the temperature of any point is identical, resistance wire is placed on heating module outermost part, the heat impelling outermost resistance wire to produce imports innermost layer into along all directions, and often some temperature on the same circle of internal layer is identical
2, long work-ing life.Adopt special heating steel, can stand long-time heating, prevent oxidized, the most important thing is that heating steel thickness is thick, area is large, adds the long life.Resistance wire uses vitrified pipe to wire up, and prevents from lowering the temperature rapidly when cooling, causes resistance wire to be easily oxidized, even occurs fracture.
3, extraordinary resistance to air loss, by adopting a silica tube to run through whole prefabricated rods process furnace, adopt extraordinary rubber seal, and seal gum seals.Prevent extraneous oxygen and atmospheric pollution, avoid crystallization, this is that prior art cannot be dealt with problems.
4, very little temperature fluctuations (floating within the scope of 0.2 DEG C).Owing to adopting special heating module, good thermal environment, and the thermal equilibrium adopting heat preserving ceramic pipe to cause whole stove to have.
5, oxygen-free environment furnace chamber.By single cavity, and upper end air inlet, on upper flange plate, gas mould and lower end air-out apparatus, realize tilting, rotary, the ventilating mode of through type, make oxygen in cavity at nitrogen, argon gas, and helium extruded, and can draw the optical fiber without crystallization.
6, draw little string diameter (20 microns), string diameter limit of error is in 0.5 micrometer range.By special heating module, heat-insulation system, the shielding gas recycle system, vacuum system, prefabricated rods jacking system, curled hair system and strict seal device structure carry out the temperature distribution of " impact " heating zone, impel process furnace to form rational temperature distribution interval.Do method so simple, precision is high, and adjustable temperature range is large, and heat up and present gradient, temperature control precision is high.These characteristics are that used optical fiber process furnace module is beyond one's reach.
Accompanying drawing illustrates:
Fig. 1 is the high-accuracy process furnace schematic diagram with three circle resistance wires of the heating module with ┃ ┃ shape;
Fig. 2 is the high-accuracy furnace temp distribution curve with three circle resistance wires of the heating module with ┃ ┃ shape;
Fig. 3 has
the heating module of shape encloses the high-accuracy process furnace schematic diagram of resistance wires with seven;
Fig. 4 has
the heating module of shape encloses the high-accuracy furnace temp distribution curve of resistance wires with seven;
Fig. 5 has] [heating module of shape encloses the high-accuracy process furnace schematic diagram of resistance wires with five;
Fig. 6 has] [heating module of shape encloses the high-accuracy furnace temp distribution curve of resistance wires with five;
Fig. 7 is that resistance wire stacks mode schematic diagram (5 circle);
Fig. 8 is high-accuracy heating furnace body upper flange plate structural representation;
Fig. 9 is lower flange device schematic diagram;
Figure 10 is vacuum (air inlet) device schematic diagram.
Wherein: 1 is upper end closure; 2 is inlet mouth; 3 is upper flange plate; 4 is silica tube; 5 is stainless steel cage; 6 is vitrified pipe; 7 is ceramic block; 8 is resistance wire; 8-1 is the first air inlet port; 8-2 is the second air inlet port; 8-3 is upper annular groove; 8-4 is the 4th air inlet port; 8-5 is upper fixed orifices; 8-6 is the 6th air inlet port; 9 is special heating steel; 9-1 is lower fixed hole; 9-2 is lower annular groove; 10 is lower flange; 10-1 is stainless steel lower end; 10-2 is escape pipe; 10-3 is rare gas element; 11 is lagging material.
Embodiment:
Below in conjunction with accompanying drawing, the utility model is described in further detail:
The utility model provides the high-accuracy heating installation of middle infrared optical fiber wire-drawer-tower, and by special heating module, heat-insulation system, the shielding gas recycle system, vacuum system, prefabricated rods jacking system realizes reasonable temperature interval and extraordinary tightness system composition.Fig. 1 is with || the prefabricated rods process furnace of shape, and Fig. 2 is || the temperature distribution history of the prefabricated rods process furnace of shape, Fig. 3 be with
the high-accuracy process furnace of prefabricated rods of shape, Fig. 4 is
the high-accuracy furnace temp distribution curve of shape, Fig. 5 be with] [the high-accuracy process furnace of shape heating module prefabricated rods, Fig. 6] [high-accuracy process furnace of shape heating module prefabricated rods.As Fig. 1; 3; shown in 5; in the middle of the hot spots of high-accuracy heating stove, dash area is 9 special heating steel; 9 materials and size can be different; its shape affects warm area distribution to closing; its structure is centrosymmetry; whole heating steel runs through whole body of heater hot spots; 9 special heating steel heat conductivilitys are fine; a high temperature platform can be formed, gap filling fire resisting material between 9 special heating steel and 4 silica tubes, adopt any to special heating steel shape do similar shape conversion all belong to protection domain.
At Fig. 1,3, shown in 5; for 8 resistance wires and 6. vitrified pipe, in order to prevent resistance wire to be oxidized, by resistance wire string in vitrified pipe; prefabricated rods process furnace work-ing life can be extended like this, also resistance wire string can protected its oxidation and in the good material of thermal conductivity simultaneously.8 resistance wires can be selected thick as Φ 10,15,20 (mm), also can be thin as Φ 2,4,6 (mm).As shown in Figure 7, be five circle resistance wire-vitrified pipe (7-1-7-2) disposing ways, adopt overlapping stacking, therefore prevent very wide high temperature platform.The resistance wire number of turns can be 3,5,7,9,11 etc., resistance wire produces heat conduction to 9 special heating steel.
If figure is at Fig. 1,3, shown in 5,11 lagging materials and 10 stainless steel cages, in order to keep high-temperature slope efficiency, namely be exactly that the heat produced by resistance wire transmits toward 9 special heating steel, prevent heat from passing to the external world, outside resistance wire, fill 11 lagging materials as insulation cotton, glass fibre etc., these lagging materials keep being evenly distributed on around 9 special heating steel, keep each some temperature concentrically ringed in 4 silica tubes identical.
As Fig. 1,3, shown in 5, the protection gas recycle system adopts upper end ventilation, gives vent to anger in lower end.The diameter of 2 (10-4) inlet mouth is Φ 6,8,10,12, rare gas element is introduced upper flange plate upper end space, by upper flange plate air inlet port, enter in silica tube, in silica tube, gas declines (as Fig. 1 in through type mode, shown in 3,5), finally middle out from lower flange.Disjunctor is adopted simply to ventilate in silica tube.Compared to oxygen, adopt " heavy " argon gas, the nitrogen that quality is suitable, the gas mixture of the helium of " light " thoroughly cleans the oxygen in body of heater.
As shown in Figure 8, the upper flange plate of whole high-accuracy process furnace, adopt 8-1,8-2,8-4, the realization of 8-6 tetra-kinds of sizes is ventilated toward 4 silica tubes, the diameter of 8-4 macropore is Φ 8-16, and smallest cell dimension is Φ 0.8-1.5, label 8-1,8-6 is the close ventage in two kinds of apertures, and their pore sizes are Φ 2-6.Adopt this by outward in progressively reduce ventilating pit, the oxygen of the inside can be squeezed out completely, not affect whole stove interior warm area simultaneously, also avoid, when drawing optical fiber, causing optical fiber to be shaken simultaneously.Outermost largest hole is that its size dimension is Φ 25-45 again, 8-3U shape groove, and the inside is painted into seal gum, sealing-ring is put into groove simultaneously for fixing whole furnace binding, and inside groove, circle is prefabricated rods lifting rod-stainless steel.Prefabricated rods process furnace lower flange as shown in Figure 9,9-1 macropore is the same with 8-5 macropore size, function is also the same, the fixing high-accuracy process furnace of whole prefabricated rods, 9-2U shape groove is with being used for fixing silica tube, also be simultaneously have same U-lag for fixing silica tube in the lower surface of upper flange plate, by upper and lower stainless steel plate, high-accuracy for whole prefabricated rods process furnace fixed like this.
That whole device vacuumizes as shown in Figure 10, and inlet system.10-1 stainless steel lower end connects infrared prefabricated rods, and upper end connects 10-2 escape pipe, its diameter of phi 6,8,10.10-3 gas (primary inert gas, nitrogen and oxygen) realizes discharging outward by the vacuum pump of escape pipe end, realizes making to keep negative pressure between covering and core simultaneously, does not occur airport.10-5 rare gas element and nitrogen, by 10-4 inlet mouth, enter 3 upper flange plate upper ends with oblique form, and then 10-5 rare gas element and nitrogen enter in 4 silica tubes by 8-1,8-2,8-4,8-6 air inlet port, enter with rotated versions and straight-through form in this process.
Infrared optical fiber described in the utility model can be sulphur system optical fiber, as sulphur system optical fiber such as As, Te, S, also can be TeO
2tellurate glass optical fiber, as TZN (TeO
2-ZnO-Na
2cO
3), TZW (TeO
2-ZnO-WO
2), TZBa (TeO
2-ZnO-BaO
2), TZBi (TeO
2-ZnO-BaO
2), also can be germanate glass optical fiber, phosphate glass optical fiber etc. infrared optical fiber.
Below in conjunction with specific embodiment, the high-accuracy process furnace of application prefabricated rods of the present utility model is described in detail.
The prefabricated rods process furnace of embodiment 1 " | " shape
Whole body of heater height 50cm is high, and the wide 140mm of body of heater, is divided into, in, lower three parts, upper part is inlet device and upper flange plate stationary installation mainly, and middle part is body of heater hot spots, and lower end is air-out apparatus.Body of heater hot spots: whole process furnace hot spots diameter is 132mm, high 100-150mm, adopt the special heating steel of 309 model of " ┃ ┃ " shape, the size height of special heating steel is 45-65mm, and thick is 8-12mm; Resistance is size is Φ 8 (mm), and outside vitrified pipe internal diameter is Φ 12; Adopt silica tube to adopt flame polish, diameter is 26-38mm, silica tube thickness of pipe 2-6mm, long 45cm.Filling with glass optical fiber and cotton below at special heating steel, uniform symmetrical being filled in around silica tube.Inlet mouth: the sealing-ring adopting Φ 4, resin silica gel, to Link Port, place seals; The diameter of inlet mouth is Φ 8, and ingress diameter is 16mm, and inlet mouth lower end diameter is 24-32mm.Upper flange plate: the thick 2cm of steel plate, the hole diameter of upper end respectively: Φ 8,4,2,1.2.Lower flange: the thick 2cm of steel plate, central exit diameter is 32cm, little groove deep 2mm.Be empty at the direct center of the steel plate of lower end, the empty circular diameter in center is 30-40mm.
The high-accuracy heating installation assembling of whole middle infrared optical fiber wire-drawer-tower is carried out according to step below:
A) 309 model heating steel are processed into annular, engrave 3 circle sulculuses at outermost.Packing with vitrified pipe of Φ 8 resistance wire is stringed together, tightly around in heating steel hopper, lines up 3 circles.
B) outside whole heating module, lagging material (as: cotton, glass fibre) is filled out, being arranged in around heating steel symmetrically.Outermost stainless steel annulus hollow cap wires up.And whole process furnace is placed in a thick 2-4cm, the length of side is on the square stainless steel of 14-20cm.
C) insert diameter 26-38mm in heating steel inside, thickness is the silica tube of 2-6mm, long 45cm.Insertion upper end, upper end stainless steel plate (the thick 3-5cm of silica tube, the length of side is 14-20cm) annular groove in, then use silicone filler in annular groove, with sealed silica envelope upper end, for the lower end of silica tube, also insert in stainless steel plate (thick 3-5cm, the length of side the is 14-20cm) annular groove of lower end, with silica gel sealing, boring a diameter at the stainless-steel sheet place of silica tube lower end is Φ 24-32 outlet opening.
D) at upper flanges dish upper surface, taking center as the center of circle, diameter is in 24-32mm circle, bore the air inlet port that 6-12 aperture is Φ 8,8-14 aperture is the air inlet port of Φ 4, and 12-20 aperture is the air inlet port of Φ 2, and 16-24 aperture is the air inlet port of Φ 1.2.
J) vacuum (air inlet) device (as shown in Figure 10) is connected to the air inlet port upper end on upper flange plate with screw.Connect in a furnace one hollow, the stainless steel of collimation, diameter 4-8mm, internal diameter is 2-6mm, and it is controlled by flange, and flange is controlled by jacking system; Infrared prefabricated rods during stainless steel lower end connects, upper end connects valve tube, and valve tube connects vacuum pump.
E) at upper flange plate, the steel plate of intermediate heating furnace, around lower flange, mutual correspondence position bores the hole that four apertures are 15-25mm, with four central diameter 40mm, two ends diameter 15-25mm, long 50 solid stainless steel bars insert in the middle of steel plate hole, with fixing whole stove.
Whole prefabricated rods heating stove temperature curve trend as shown in Figure 2, when use rare gas element is helium (1L/minHe), whole temperature curve is parabolic shape, wide 12mm from top temperature point 20 DEG C of place's platforms, distance top temperature point is 50 DEG C of platforms is 27mm, is about 45 from top temperature 100 degree of platforms.When use rare gas element is argon gas (1L/minN
2), whole temperature curve is parabolic shape, but has broadening, is wide 18mm from top temperature point 20 DEG C of place's platforms, and distance top temperature point is 50 DEG C of platforms is 46mm.When use rare gas element is argon gas (Ar), whole temperature curve is parabolic shape, is wide 19mm from top temperature point 20 DEG C of place's platforms, and distance top temperature point is 50 DEG C of platforms is about 54mm.
Embodiment 2 "
" the high-accuracy process furnace of prefabricated rods of shape
Whole body of heater height 50cm is high, and the wide 140mm of body of heater, is divided into, in, lower three parts, upper part is inlet device and upper flange plate stationary installation mainly, and middle part is body of heater hot spots, and lower end is air-out apparatus.Body of heater hot spots: whole process furnace hot spots diameter is 132mm, high 150mm, adopt "
" the special heating steel of 600 model of shape, "
" long limit is 60-80mm, two minor faces are 45-55mm, and thick is 8-12mm; Resistance wire size is Φ 2-6 (mm), and outside vitrified pipe internal diameter is Φ 8; Adopt silica tube to adopt flame polish, diameter is 26-38mm, silica tube thickness of pipe 2-6mm, long 45cm.Filling with glass optical fiber and cotton below at special heating steel, uniform symmetrical being filled in around silica tube.
Inlet mouth: the sealing-ring adopting Φ 0.5-4, resin silica gel, to Link Port, place seals; The diameter of inlet mouth is Φ 8, and ingress diameter is 16mm, and inlet mouth lower end diameter is 24-32mm.Upper flange plate: the thick 2cm of steel plate, the hole diameter of upper end respectively: Φ 8,4,2,1.2.Lower flange: the thick 2cm of steel plate, central exit diameter is 32cm, little groove deep 2mm.Be empty at the direct center of the steel plate of lower end, the empty circular diameter in center is 30-40mm.
The high-accuracy heating installation assembling of whole middle infrared optical fiber wire-drawer-tower is carried out according to step below:
A) 600 model heating steel are processed into annular, engrave 4 circle sulculuses at outermost.Stupalith is filled between special heating steel and silica tube.Packing with vitrified pipe of Φ 2-6 resistance wire is stringed together, tightly around in heating steel hopper, lines up 4-3 form 7 and enclose.
B) outside whole heating module, lagging material (as: cotton, glass fibre) is filled out, being arranged in around heating steel symmetrically.Outermost stainless steel annulus hollow cap wires up.And whole process furnace is placed in a thick 2-4cm, the length of side is on the square stainless steel of 14-20cm.
C) insert diameter 26-38mm in heating steel inside, thickness is the silica tube of 2-6mm, long 45cm.Insertion upper end, upper end stainless steel plate (the thick 3-5cm of silica tube, the length of side is 14-20cm) annular groove in, then use silicone filler in annular groove, with sealed silica envelope upper end, for the lower end of silica tube, also insert in stainless steel plate (thick 3-5cm, the length of side the is 14-20cm) annular groove of lower end, with silica gel sealing, boring a diameter at the stainless-steel sheet place of silica tube lower end is Φ 24-32 outlet opening.
D) at upper end stainless steel plate upper surface, taking center as the center of circle, diameter is in 24-32mm circle, bore the air inlet port that 6-12 aperture is Φ 8,8-14 aperture is the air inlet port of Φ 4, and 12-20 aperture is the air inlet port of Φ 2, and 16-24 aperture is the air inlet port of Φ 1.2.
E) vacuum (air inlet) device (as shown in Figure 10) is connected to the air inlet port upper end on upper flange plate with screw.Connect in a furnace one hollow, the stainless steel of collimation, diameter 4-8mm, internal diameter is 2-6mm, and it is controlled by flange, and flange is controlled by jacking system; Infrared prefabricated rods during stainless steel lower end connects, upper end connects valve tube, and valve tube connects vacuum pump.
F) at upper flange plate, the steel plate of intermediate heating furnace, around lower flange, mutual correspondence position bores the hole that four apertures are 15-25mm, with four central diameter 40mm, two ends diameter 15-25mm, long 50 solid stainless steel bars insert in the middle of steel plate hole, with fixing whole stove.
Whole prefabricated rods heating stove temperature curve trend as shown in Figure 4, when use rare gas element is helium (He), whole temperature curve is parabolic shape, is wide 9mm from top temperature point 10 DEG C of place's platforms, and distance top temperature point is 50 DEG C of platforms is about 25mm.
Embodiment 3 "] " the high-accuracy process furnace of prefabricated rods of shape
Whole body of heater height 50cm is high, and the wide 140mm of body of heater, is divided into, in, lower three parts, upper part is inlet device and upper flange plate stationary installation mainly, and middle part is body of heater hot spots, and lower end is air-out apparatus.Body of heater hot spots: whole process furnace hot spots diameter is 132mm, high 150mm, adopt the special heating steel of 630 model of "] [" shape, the long limit of "] [" is 60-80mm, and wide is 20-35mm, and thick is 4-8mm; Resistance wire size is Φ 4-8 (mm), and outside vitrified pipe internal diameter is Φ 12; Adopt silica tube to adopt flame polish, diameter is 26-38mm, silica tube thickness of pipe 2-6mm, long 45cm.Filling with glass optical fiber and cotton below at special heating steel, uniform symmetrical being filled in around silica tube.Inlet mouth: the sealing-ring adopting Φ 0.5-4, resin silica gel, to Link Port, place seals; The diameter of inlet mouth is Φ 8, and ingress diameter is 16mm, and inlet mouth lower end diameter is 24-32mm.Upper flange plate: the thick 2cm of steel plate, the hole diameter of upper end respectively: Φ 8,4,2,1.2.Lower flange: the thick 2cm of steel plate, central exit diameter is 32cm, little groove deep 2mm.Be empty at the direct center of the steel plate of lower end, the empty circular diameter in center is 30-40mm.
The high-accuracy heating installation assembling of whole middle infrared optical fiber wire-drawer-tower is carried out according to step below:
A) 630 model heating steel are processed into annular, engrave 3 circle sulculuses at outermost.Stupalith is filled between special heating steel and silica tube.Packing with vitrified pipe of Φ 4-8 resistance wire is stringed together, tightly around in heating steel hopper, lines up 3-2 form 5 and enclose.
B) outside whole heating module, lagging material (as: cotton, glass fibre) is filled out, being arranged in around heating steel symmetrically.Outermost stainless steel annulus hollow cap wires up.And whole process furnace is placed in a thick 2-4cm, the length of side is on the square stainless steel of 14-20cm.
C) insert diameter 26-38mm in heating steel inside, thickness is the silica tube of 2-6mm, long 45cm.Insertion upper end, upper end stainless steel plate (the thick 3-5cm of silica tube, the length of side is 14-20cm) annular groove in, then use silicone filler in annular groove, with sealed silica envelope upper end, for the lower end of silica tube, also insert in stainless steel plate (thick 3-5cm, the length of side the is 14-20cm) annular groove of lower end, with silica gel sealing, boring a diameter at the stainless-steel sheet place of silica tube lower end is Φ 24-32 outlet opening.
D) at upper end stainless steel plate upper surface, taking center as the center of circle, diameter is in 24-32mm circle, bore the air inlet port that 6-12 aperture is Φ 8,8-14 aperture is the air inlet port of Φ 4, and 12-20 aperture is the air inlet port of Φ 2, and 16-24 aperture is the air inlet port of Φ 1.2.
E) vacuum (air inlet) device (as shown in Figure 10) is connected to the air inlet port upper end on upper flange plate with screw.Connect in a furnace one hollow, the stainless steel of collimation, diameter 4-8mm, internal diameter is 2-6mm, and it is controlled by flange, and flange is controlled by jacking system; Infrared prefabricated rods during stainless steel lower end connects, upper end connects valve tube, and valve tube connects vacuum pump.
F) at upper flange plate, the steel plate of intermediate heating furnace, around lower flange, mutual correspondence position bores the hole that four apertures are 15-25mm, with four central diameter 40mm, two ends diameter 15-25mm, long 50 solid stainless steel bars insert in the middle of steel plate hole, with fixing whole stove.
Whole middle infrared optical fiber wire-drawer-tower with high-accuracy heating apparatus temperature curvilinear trend as shown in Figure 6, when use rare gas element is helium (He), whole temperature curve is parabolic shape, wide 13mm from top temperature point 20 DEG C of place's platforms, distance top temperature point is 50 DEG C of platforms is about 22mm, is wide 36mm from top temperature point 100 DEG C of place's platforms.
The shape of the special heating steel that above-mentioned three examples are selected has " ┃ ", "
", " [", but the shape of special heating steel that the utility model can be selected is not limited only to above-mentioned three kinds, and the special steel material of analogous shape can be used for obtaining the heating interval needed.
In sum, the utility model beneficial effect is, be applied to and draw without crystallization, infrared optical fiber (the sulphur system of string diameter stable (string diameter controls within the scope of ± 0.5 micron error), the optical fiber such as tellurate glass), it is interval that it has very symmetrical temperature distribution, long work-ing life etc. advantage.
The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, although the utility model discloses as above with preferred embodiment, but and be not used to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, when the method and technology contents that can utilize above-mentioned announcement are made a little change or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solutions of the utility model, according to any simple modification that technical spirit of the present utility model is done above embodiment, equivalent variations and modification, still belong in the scope of technical solutions of the utility model.
Claims (7)
1. the high-accuracy heating installation of middle infrared optical fiber wire-drawer-tower, is characterized in that: comprise arrange in the middle of body of heater, the diffuser at body of heater top, body of heater silica tube, be arranged on composite heating module in the middle part of silica tube outer wall; Described body of heater top is provided with upper flange plate, and upper flange plate is provided with diffuser, is provided with end closure on diffuser top, bottom of furnace body is provided with lower flange; Described upper flange plate center is provided with circular hole, lower flange center is provided with lower circular hole, upper bore edges is provided with annular groove, lower bore edges is provided with lower annular groove, silica tube top connects upper annular groove, silica tube bottom connects lower annular groove, silica tube is communicated with diffuser, quartzy casing pack rare gas element; Be provided with a hollow stainless steel in described silica tube, infrared glass preform during stainless steel lower end connects, upper end connects valve tube, and valve tube connects vacuum pump.
2. high-accuracy heating installation as claimed in claim 1, is characterized in that: described silica tube top and upper circular groove by sealing-ring and silica gel sealing, silica tube bottom and lower circular groove by sealing-ring and silica gel sealing, the resistance to 200-250 of seal gum DEG C high temperature.
3. high-accuracy heating installation as claimed in claim 1, is characterized in that: described composite heating module comprises the heating ring being arranged on silica tube outside, the vitrified pipe being arranged on heating ring outer wall; Described ceramic tube inside is provided with resistance wire; Described heating ring and vitrified pipe are outside equipped with stainless steel cage, between stainless steel cage and vitrified pipe, be filled with refractory materials.
4. high-accuracy heating installation as claimed in claim 3, it is characterized in that: described heating ring is made up of heat-resisting special steel, its grade of steel is 301,302,304,309,310,408,600 or 630; Described refractory materials is ceramic block, asbestos or glass fibre.
5. high-accuracy heating installation as claimed in claim 3, is characterized in that: described resistance wire diameter is 0.5-20mm; The described resistance wire number of turns is 1-19 circle, adopts vertical emission type, Superimposed or stacking type arranged side by side.
6. high-accuracy heating installation as claimed in claim 3, it is characterized in that: described vitrified pipe is ring-type, its external diameter is 2-28mm, and internal diameter is 1.5-24mm.
7. high-accuracy heating installation as claimed in claim 3, is characterized in that:
Described high-accuracy composite heating module generation 1mm-20mm highest temperature platform, 12-35mm 20 degree of high temperature platforms, 20-40mm 50 degree lowers the temperature distributed area, and 45-65mm hundred degree lowers the temperature distributed area;
Or form 3mm-18mm highest temperature platform, 14-32mm 20 degree of high temperature platforms, 23-38mm 50 degree lowers the temperature distributed area, 46-62mm hundred degree lowers the temperature distributed area;
Or form 5mm-15mm highest temperature platform, 14-30mm 20 degree of high temperature platforms, 25-36mm 50 degree lowers the temperature distributed area, 48-60mm hundred degree lowers the temperature distributed area;
Or form 6mm-12mm highest temperature platform, 16-26mm 20 degree of high temperature platforms, 27-32mm 50 degree lowers the temperature distributed area, 50-55mm hundred degree lowers the temperature distributed area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420306790.1U CN204385058U (en) | 2014-06-10 | 2014-06-10 | The high-accuracy heating installation of middle infrared optical fiber wire-drawer-tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420306790.1U CN204385058U (en) | 2014-06-10 | 2014-06-10 | The high-accuracy heating installation of middle infrared optical fiber wire-drawer-tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204385058U true CN204385058U (en) | 2015-06-10 |
Family
ID=53357793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420306790.1U Expired - Fee Related CN204385058U (en) | 2014-06-10 | 2014-06-10 | The high-accuracy heating installation of middle infrared optical fiber wire-drawer-tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204385058U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105293894A (en) * | 2014-06-10 | 2016-02-03 | 西安思翰光电科技有限公司 | High-precision heating furnace for mid-infrared optical fiber drawing tower |
| CN111253058A (en) * | 2020-01-22 | 2020-06-09 | 中国科学院西安光学精密机械研究所 | Device and method for preparing anhydrous infrared glass optical fiber preform |
| CN113912273A (en) * | 2021-09-14 | 2022-01-11 | 宁波阳光和谱光电科技有限公司 | Preparation method of ultrathin chalcogenide glass |
-
2014
- 2014-06-10 CN CN201420306790.1U patent/CN204385058U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105293894A (en) * | 2014-06-10 | 2016-02-03 | 西安思翰光电科技有限公司 | High-precision heating furnace for mid-infrared optical fiber drawing tower |
| CN105293894B (en) * | 2014-06-10 | 2019-01-11 | 西安思翰光电科技有限公司 | The high-accuracy heating furnace of mid-infrared light fibre wire-drawer-tower |
| CN111253058A (en) * | 2020-01-22 | 2020-06-09 | 中国科学院西安光学精密机械研究所 | Device and method for preparing anhydrous infrared glass optical fiber preform |
| CN111253058B (en) * | 2020-01-22 | 2021-09-14 | 中国科学院西安光学精密机械研究所 | Device and method for preparing anhydrous infrared glass optical fiber preform |
| CN113912273A (en) * | 2021-09-14 | 2022-01-11 | 宁波阳光和谱光电科技有限公司 | Preparation method of ultrathin chalcogenide glass |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204385058U (en) | The high-accuracy heating installation of middle infrared optical fiber wire-drawer-tower | |
| CN107601840A (en) | Segmented preform sintering furnace device and corresponding optical wand sintering method | |
| EP0978487A3 (en) | Sealed, nozzle-mix burners for silica deposition | |
| CN200997006Y (en) | Optical-fibre coupler | |
| CN105939974B (en) | Shorten the method for the process time of fibre-optical preform | |
| CN111423106A (en) | Sintering device and sintering method for loose body of optical fiber preform | |
| CN103323910A (en) | Double-clad optical fiber | |
| CN103663960B (en) | A kind of fibre drawing furnace | |
| CN104311143B (en) | A kind of method improving carbon aerogel composite material antioxidant property | |
| CN102368102A (en) | Intermediate infrared optical fiber and manufacturing method thereof | |
| CN105293894A (en) | High-precision heating furnace for mid-infrared optical fiber drawing tower | |
| EP3209935A1 (en) | Lighting apparatus for hazardous areas | |
| JP5923997B2 (en) | Optical fiber drawing furnace and optical fiber drawing method | |
| CN102981212A (en) | Photonic bandgap fiber | |
| EP0037312A1 (en) | Container for conditioning radioactive effluents | |
| CN205616787U (en) | Optical fiber perform's manufacturing installation | |
| CN107894629A (en) | A kind of compound-glass optical fiber of hollow and preparation method thereof | |
| CN105293893A (en) | High-precision compound heating module for low-medium temperature optical fiber preform fiber drawing furnace | |
| CN202275184U (en) | Mid-infrared optical fiber | |
| CN204325139U (en) | The high-accuracy composite heating module of middle low temperature optical fiber prefabricated stick drawn wire stove | |
| CN104944758A (en) | Sintering apparatus and sintering method for glass preform for optical fiber | |
| CN201489135U (en) | Encapsulating device | |
| CN210894101U (en) | Air chamber structure for gas sensing | |
| CN220745697U (en) | Flame burner for forming neutral borosilicate glass tube | |
| CN2906314Y (en) | Thermal-resistant PC transparent cover |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150610 Termination date: 20170610 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |