CN106396361A - Optical fiber perform rod casing tube sintering device, and sintering method thereof - Google Patents
Optical fiber perform rod casing tube sintering device, and sintering method thereof Download PDFInfo
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- CN106396361A CN106396361A CN201610737330.8A CN201610737330A CN106396361A CN 106396361 A CN106396361 A CN 106396361A CN 201610737330 A CN201610737330 A CN 201610737330A CN 106396361 A CN106396361 A CN 106396361A
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- Prior art keywords
- sleeve pipe
- preform
- sintering
- fixing device
- heating furnace
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/01205—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments
- C03B37/01225—Means for changing or stabilising the shape, e.g. diameter, of tubes or rods in general, e.g. collapsing
- C03B37/01248—Means for changing or stabilising the shape, e.g. diameter, of tubes or rods in general, e.g. collapsing by collapsing without drawing
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
- C03B37/018—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD] by glass deposition on a glass substrate, e.g. by inside-, modified-, plasma-, or plasma modified- chemical vapour deposition [ICVD, MCVD, PCVD, PMCVD], i.e. by thin layer coating on the inside or outside of a glass tube or on a glass rod
- C03B37/01853—Thermal after-treatment of preforms, e.g. dehydrating, consolidating, sintering
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
- C03B37/01446—Thermal after-treatment of preforms, e.g. dehydrating, consolidating, sintering
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
- C03B37/018—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD] by glass deposition on a glass substrate, e.g. by inside-, modified-, plasma-, or plasma modified- chemical vapour deposition [ICVD, MCVD, PCVD, PMCVD], i.e. by thin layer coating on the inside or outside of a glass tube or on a glass rod
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
The invention discloses an optical fiber perform rod casing tube sintering device. The optical fiber perform rod casing tube sintering device comprises a casing tube, an upper fixing device, a lower fixing device, and a heating furnace; the casing tube is vertically arranged in the heating furnace via the upper fixing device and the lower fixing device; an optical fiber perform rod loose body is arranged in the casing tube, and is connected with the upper fixing device; an air exhausting mechanism is arranged on the upper fixing device; the air exhausting mechanism is connected with an exhaust system and a vacuum pump via a valve switch; and an air intake mechanism is arranged on the lower fixing device. The invention also provides a sintering method. According to the sintering method, casing tube vacuum pumping is adopted for sintering of the optical fiber perform rod loose body, so that application of a furnace core tube which is expensive and is easy to be damaged is avoided, and loose bodies with large sizes can be prepared; at the same time, vacuum environment is beneficial for improving perform rod quality, accelerating sintering speed, and increasing production efficiency; and in addition, furnace core tube-free sintering method is adopted, so that production cost is reduced, equipment complex degree is reduced, and equipment space occupied degree is reduced.
Description
Technical field
The present invention relates to preform manufacture field, particularly relate to a kind of preform sleeve pipe sintering equipment and
Its sintering method.
Background technology
In this area, large-scale optical fiber prefabricating stick production technology mainly passes through VAD, and OVD process deposits form loose media.Institute
VAD, OVD technique of meaning, is to make prefabricated rods using the method for vapour deposition.By introducing a material in flame, in burning
Indoor production SiO2Granule, and deposit to preset target target rod or middle rod on make loose media.By VAD, OVD technique
After making loose media, then it is placed in sintering furnace, under hot conditionss, sintering forms vitrification prefabricated rods.Prefabricated by make
Rod is drawn into and obtains finished product optical fiber or using other quartz socket tube carries out collapsing outsourcing manufacture more to it with fiber optic materials ad eundem
Large-sized preform.
For the loose media made by VAD, OVD or VAD and OVD hybrid technique, its sintering process must be prevented from water
Divide and the such as various metal impurities of other impurities enter in prefabricated rods.Generally, if the moisture of more than 1ppb or metal
Impurity enters in preform in sintering process, and the optical fiber made by this prefabricated rods is decayed in very big wave-length coverage
To greatly increase thus leading to product unqualified.In order to prevent the moisture containing in loose media from product quality is caused with bad shadow
Ring, it is necessary to be dehydrated to loose media before loose media vitrification forms transparent prefabricated rods.Common dewatering is in bag
Containing Cl2Or in the inert gas environment of other chloro desiccant, loose media is heated to 1100 DEG C～1300 DEG C of hot conditionss
Under, by physics and chemical action, by the hydroxyl in loose media and moisture removal.
After loose media dehydration finishes, it is placed in the inert gas environments such as He, Ar, is simultaneously heated to more than 1450 DEG C.Here
Under the conditions of loose media vitrification form transparent quartzy prefabricated rods.
It is clear that common technology in the dehydration of loose media and sintering process it is necessary to by loose media be placed in one close
Under closed loop border, it is its dehydration and the fully transparentization corresponding atmosphere of offer, avoids introduced contaminants to enter wherein simultaneously.Typically
There is provided sealed environment by installing furnace core tube in heating furnace, loose media is placed in furnace core tube, is passed through under the high temperature conditions
Various process gas, are dehydrated and are sintered.
Chinese patent CN101426742B《Fibre parent material manufacture method》Invent a kind of loose media sintering method.Will be loose
Body is suspended in the furnace core tube possessing heating region.Make loose media from bottom to top pass through the thermal treatment zone, be passed through simultaneously chlorine-based gas with
And noble gases are dehydrated.It is dehydrated below loose media movement to the thermal treatment zone after terminating, the thermal treatment zone is heated to sintering temperature,
And be passed through noble gases, then loose media is passed through from bottom to top the thermal treatment zone so as to fully transparent vitrification.
The method is similar with other traditional methods, the furnace core tube made using quartz material.Its originality essentially consist in for
Improve product quality uniformity, it is to avoid impurity in furnace core tube enter in dehydration sintering process prefabricated rods internal and de-
Take in water, sintering process and loose media is passed through from bottom to top the thermal treatment zone.According to the method, the chlorine by 10% and 90%
Helium provides dehydration atomosphere, and 100% helium provides sintering atmosphere, and manufacture under suitable dehydration temperaturre and sintering temperature
The optical fiber that preform is made has good Reduction Level.
Chinese patent CN102992611B《The manufacture method of base glass material》Invent with a kind of stove made with carbon materials matter
Core pipe provides the manufacture method of closed environment.Good fade performance is shown by the optical fiber that the method is made.
Such as said method, is all to meet necessary taking off by increasing a high-purity material furnace core tube in sintering furnace
Water, sintering condition.
Highly purified material rate requires to result in the material cost of costliness.The bigger furnace core tube difficulty of processing of size is more
Greatly, process equipment is increasingly complex, considerably increases manufacturing cost.
Manufacture quartz material furnace core tube in heat treatment process residual stress, in the course of processing, transportation, keeping and make
With during be susceptible to rupture thus leading to scrap.Further, since distinctive material feature of quartz itself determines furnace core tube
Once being warming up to more than 1100 DEG C, crystallization in furnace core tube, if temperature is recovered to low temperature to rupture.
Carbon materials matter furnace core tube itself is easily polluted by external condition.If with atmosphere, furnace core tube itself will be oxidized.
High requirement is proposed to the air-tightness of equipment.In addition, when being placed in furnace core tube loose media from atmospheric environment, can not keep away
The meeting exempted from leads to oxygen to enter wherein, and long-time use will lead to furnace core tube aging and affect properties of product.
Another is vital to be disadvantageous in that, due to the limitation of the quartz ampoule material of the materials such as quartz, carbon itself
Property result in traditional process typically by furnace core tube, the thermal treatment zone fix and using by loose media through the thermal treatment zone complete burn
Knot.The length having thereby resulted in furnace core tube is generally higher than the loose body length of twice.It is clear that this not only considerably increases setting
Standby complexity, equipment occupation space size, and in order to reach preferred dehydration, fully transparentization atmospheric condition, significantly
Increased all kinds of process gas, particularly price is very expensive, the helium usage amount that belongs to non-renewable resources, thus significantly
Increased the manufacturing cost of preform.
Therefore, the present inventor needs a kind of new technique of design badly to improve its problem.
Content of the invention
The present invention is intended to provide a kind of preform sleeve pipe sintering equipment and its sintering method, it can effectively reduce and sets
Standby complexity, reduces the device space and takies degree, reduce production cost, be conducive to large-scale mass production.
For solving above-mentioned technical problem, the technical scheme is that：
A kind of preform sleeve pipe sintering equipment, including sleeve pipe, upper fixing device, lower fixing device, heating furnace, wherein
Described sleeve pipe is arranged in described heating furnace in a vertical manner by fixed device and described lower fixing device, an optical fiber
Prefabricated rods loose media is arranged in described sleeve pipe and realizes being connected with fixed device；Fixed device is provided with one
Exhaust gear, described exhaust gear is connected with gas extraction system and vacuum pump by valve switch, and described lower fixing device is provided with
One admission gear.
Preferably, fixed device and described lower fixing device drive with by rotating mechanism, and the two can synchronous rotary.
Preferably, described preform loose media is connected with fixed device by a bindiny mechanism.
Preferably, described heating furnace is made up of one or more heating element heater, and it is arranged on the outside of described sleeve pipe.
Preferably, described sleeve pipe is quartz socket tube.
Based on the sintering method of preform sleeve pipe sintering equipment described above, comprise the steps：
S1：Sleeve pipe is arranged in heating furnace in a vertical manner by upper fixing device and lower fixing device；
S2：Preform loose media is arranged in sleeve pipe and realizes being connected with upper fixing device；
S3：Gently moved by the liter of heating furnace and remove the hydroxyl being introduced by production process in preform loose media；
S4：By the bottom of heating furnace movement to preform loose media, it is warming up to more than 1450 DEG C, and form temperature ladder
Degree distribution；
S5：Under the conditions of certain sintering temperature, preform loose media end portion completes vitrification；
S6：By valve switch by exhaust gear and vacuum pump UNICOM, form negative pressure in inside pipe casing；Adjustment heating simultaneously
The Temperature Distribution of stove, makes its lower end contraction on melting, merges with vitrified preform loose media；
S7：After the completion of bottom is merged, heating furnace is moved up with certain translational speed, and preform loose media is divided
Area's vitrification.
Preferably, described step S3 specifically includes：
Heating furnace is warming up to 1100 DEG C～1300 DEG C, and vertically moves back and forth 1 time or more than 1 time；
It is passed through desiccant and process gas in simultaneously from admission gear to sleeve pipe；By valve switch open gas extraction system with
The passage of exhaust gear, intrinsic pressure for sleeve pipe power is maintained at suitable level, provides dehydration atomosphere environment.
Preferably, described process gas is to one of chlorine, helium, nitrogen or multiple.
Preferably, described sleeve pipe is quartz socket tube.
Using technique scheme, the present invention at least includes following beneficial effect：
Preform sleeve pipe sintering equipment of the present invention and its sintering method, using sleeve pipe vacuum pumping method sintering
Preform loose media, it is to avoid using expensive and easily damaged furnace core tube, can prepare large scale loose media.Simultaneously true
Altitude is conducive to improving prefabricated rods quality, accelerates sintering velocity, improve production efficiency.Simultaneously using no furnace core tube sintering side
Method, reduces production cost, reduces equipment complexity, reduces the device space and takies degree, is conducive to large-scale mass production.
Brief description
Fig. 1 is the structural representation of preform sleeve pipe sintering equipment of the present invention；
Fig. 2 be preform sleeve pipe sintering equipment of the present invention bottom fusion after on subregion sintering collapsing mistake
The schematic diagram of journey.
Fig. 3 is heating furnace central temperature scattergram；
Fig. 4 is collapsing stepwise heating stove central temperature scattergram.
Wherein：1. go up fixing device, 2. exhaust gear, 3. sleeve pipe, 4. preform loose media, 5. heating furnace, 6. under
Fixing device, 7. admission gear, 8. bindiny mechanism.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
Embodiment 1
As shown in Figure 1 to Figure 2, for meeting a kind of preform sleeve pipe sintering equipment of the present embodiment, including sleeve pipe 3,
Upper fixing device 1, lower fixing device 6, heating furnace 5, wherein said sleeve pipe 3 is by fixed device 1 and described lower fixation
Device 6 is arranged in described heating furnace 5 in a vertical manner, a preform loose media 4 be arranged in described sleeve pipe 3 and with institute
State fixing device 1 to realize connecting；Fixed device 1 is provided with an exhaust gear 2, and described exhaust gear 2 passes through valve
Switch is connected with gas extraction system and vacuum pump, and described lower fixing device 6 is provided with an admission gear 7.
Preferably, fixed device 1 and described lower fixing device 6 drive with by rotating mechanism, and the two can synchronously revolve
Turn.
Preferably, described preform loose media 4 is connected with fixed device 1 by a bindiny mechanism 8.
Preferably, described heating furnace 5 is made up of one or more heating element heater, and it is arranged on the outside of described sleeve pipe 3.
Preferably, described sleeve pipe 3 is quartz socket tube 3.
This sintering equipment adopts sleeve pipe 3 vacuum pumping method to sinter preform loose media 4, it is to avoid using expensive and
Easily damaged furnace core tube, can prepare large scale loose media.Vacuum environment is conducive to improving prefabricated rods quality simultaneously, accelerates sintering
Speed, improve production efficiency.
Embodiment 2
Based on the sintering method of the preform sleeve pipe sintering equipment described in embodiment 1, comprise the steps：
S1：Sleeve pipe 3 is arranged in heating furnace 5 in a vertical manner by upper fixing device 1 and lower fixing device 6；
S2：Preform loose media 4 is arranged in sleeve pipe 3 and realizes being connected with upper fixing device 1；
S3：Gently moved by the liter of heating furnace 5 and remove the hydroxyl being introduced by production process in preform loose media 4
Base；
S4：By mobile for heating furnace 5 bottom to preform loose media 4, it is warming up to more than 1450 DEG C, and forms temperature
Gradient distribution, Temperature Distribution is as shown in Figure 3；
S5：Under the conditions of 1450 DEG C to 1550 DEG C of sintering temperature, preform loose media 4 end portion completes glass
Change；
S6：By valve switch by exhaust gear 2 and vacuum pump UNICOM, it is internally formed negative pressure in sleeve pipe 3；Adjustment adds simultaneously
The Temperature Distribution of hot stove 5, is made sleeve pipe 3 lower end contraction on melting, is merged with vitrified preform loose media 4, Temperature Distribution
As shown in Figure 4；
S7：After the completion of bottom is merged, heating furnace 5 is moved up with 3mm/min to 8mm/min speed, by preform
Loose media 4 subregion vitrification.After the fusion of bottom, subregion sintering collapsing process is as shown in Figure 2 upwards.
Preferably, described step S3 specifically includes：
Heating furnace 5 is warming up to 1100 DEG C～1300 DEG C, and vertically moves back and forth 1 time or more than 1 time；
It is passed through desiccant and process gas in simultaneously from admission gear 7 to sleeve pipe 3；Gas extraction system is opened by valve switch
With the passage of exhaust gear 2, intrinsic pressure for sleeve pipe 3 trying hard to keep is held in the range of 10 to 40pa, dehydration atomosphere environment is provided.
Preferably, described process gas is to one of chlorine, helium, nitrogen or multiple.
Preferably, described sleeve pipe 3 is quartz socket tube 3.
The present invention thes improvement is that：
1. sintered using sleeve pipe 3, no quartzy furnace core tube.Greatly simplify equipment complexity.And avoid by furnace core tube originally
Body pollutes, the aging product quality risk brought.
2. by the way of heating furnace 5 is mobile, it is substantially reduced equipment size, reduces gas usage, reduce production cost.
To evacuation in sleeve pipe 3 when 3. sintering, be conducive to excluding bubble, improve production efficiency.
When 4. sintering, sleeve pipe 3 collapsing is formed a part for product, increase preform size, be conducive to improving production effect
Rate.
Using no furnace core tube sintering method, reduce production cost, large scale loose media can be prepared.Reduction equipment complexity journey
Degree, reduces the device space and takies degree, be conducive to large-scale mass production.Under conditions of evacuation, loose media is burnt
Knot, is conducive to excluding bubble, accelerates sintering velocity, improves sintering efficiency.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple modifications to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle can be realized without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and be to fit to and principles disclosed herein and features of novelty phase one
The scope the widest causing.
Claims (9)
1. a kind of preform sleeve pipe sintering equipment it is characterised in that：Including sleeve pipe, upper fixing device, lower fixing device, add
Hot stove, wherein said sleeve pipe is arranged on described heating furnace in a vertical manner by fixed device and described lower fixing device
In, a preform loose media is arranged in described sleeve pipe and realizes being connected with fixed device；Fixed dress
Put and be provided with an exhaust gear, described exhaust gear is connected with gas extraction system and vacuum pump by valve switch, described lower fixation
Device is provided with an admission gear.
2. preform sleeve pipe sintering equipment as claimed in claim 1 it is characterised in that：Fixed device and described
Lower fixing device drives with by rotating mechanism, and the two can synchronous rotary.
3. preform sleeve pipe sintering equipment as claimed in claim 1 or 2 it is characterised in that：Described preform pine
A prose style free from parallelism is connected with fixed device by a bindiny mechanism.
4. described preform sleeve pipe sintering equipment as arbitrary in claim 1-3 it is characterised in that：Described heating furnace is by one
Individual or multiple heating element heater compositions, it is arranged on the outside of described sleeve pipe.
5. described preform sleeve pipe sintering equipment as arbitrary in claim 1-4 it is characterised in that：Described sleeve pipe is quartz
Sleeve pipe.
6. a kind of sintering method based on the arbitrary described preform sleeve pipe sintering equipment of claim 1-5, its feature exists
In comprising the steps：
S1：Sleeve pipe is arranged in heating furnace in a vertical manner by upper fixing device and lower fixing device；
S2：Preform loose media is arranged in sleeve pipe and realizes being connected with upper fixing device；
S3：Gently moved by the liter of heating furnace and remove the hydroxyl being introduced by production process in preform loose media；
S4：By the bottom of heating furnace movement to preform loose media, it is warming up to more than 1450 DEG C, and forms thermograde and divide
Cloth；
S5：Under the conditions of certain sintering temperature, preform loose media end portion completes vitrification；
S6：By valve switch by exhaust gear and vacuum pump UNICOM, form negative pressure in inside pipe casing；Adjust heating furnace simultaneously
Temperature Distribution, makes its lower end contraction on melting, merges with vitrified preform loose media；
S7：After the completion of bottom is merged, heating furnace is moved up with certain translational speed, by preform loose media subregion glass
Glass.
7. preform sleeve pipe sintering method as claimed in claim 6 is it is characterised in that described step S3 specifically includes：
Heating furnace is warming up to 1100 DEG C～1300 DEG C, and vertically moves back and forth 1 time or more than 1 time；
It is passed through desiccant and process gas in simultaneously from admission gear to sleeve pipe；Gas extraction system and aerofluxuss are opened by valve switch
The passage of mechanism, intrinsic pressure for sleeve pipe power is maintained at suitable level, provides dehydration atomosphere environment.
8. preform sleeve pipe sintering method as claimed in claim 7 it is characterised in that：Described process gas is to chlorine
One of gas, helium, nitrogen or multiple.
9. described preform sleeve pipe sintering method as arbitrary in claim 6-8 it is characterised in that：Described sleeve pipe is quartz
Sleeve pipe.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610737330.8A CN106396361A (en) | 2016-08-26 | 2016-08-26 | Optical fiber perform rod casing tube sintering device, and sintering method thereof |
| RU2018107936A RU2018107936A (en) | 2016-08-26 | 2017-03-19 | DEVICE FOR SINTERING PREFORMS OF OPTICAL FIBERS AND METHOD OF SINTERING WITH ITS USE |
| PCT/CN2017/077199 WO2018036142A1 (en) | 2016-08-26 | 2017-03-19 | Sintering device with casing tube for optical fibre preform rod and sintering method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610737330.8A CN106396361A (en) | 2016-08-26 | 2016-08-26 | Optical fiber perform rod casing tube sintering device, and sintering method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106396361A true CN106396361A (en) | 2017-02-15 |
Family
ID=58005215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610737330.8A Pending CN106396361A (en) | 2016-08-26 | 2016-08-26 | Optical fiber perform rod casing tube sintering device, and sintering method thereof |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN106396361A (en) |
| RU (1) | RU2018107936A (en) |
| WO (1) | WO2018036142A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018036142A1 (en) * | 2016-08-26 | 2018-03-01 | 江苏亨通光导新材料有限公司 | Sintering device with casing tube for optical fibre preform rod and sintering method therefor |
| CN108706865A (en) * | 2018-05-16 | 2018-10-26 | 上海大学 | A kind of more matrix method for preparing optical fiber of silica clad stick cored structure |
| CN112340979A (en) * | 2020-11-09 | 2021-02-09 | 杭州富通通信技术股份有限公司 | Method for manufacturing optical fiber preform |
| CN112939445A (en) * | 2021-03-30 | 2021-06-11 | 北京工业大学 | Doped quartz optical fiber preform and preparation method thereof |
| CN115490418A (en) * | 2022-09-06 | 2022-12-20 | 烽火通信科技股份有限公司 | Gas sealing device and gas sealing method for smelting-shrinkage furnace |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112142306A (en) * | 2020-10-09 | 2020-12-29 | 宁波精石纤维科技有限公司 | Quartz ceramic rod-wrapped fiber braided sleeve and using method thereof |
| CN114455827B (en) * | 2022-01-13 | 2023-06-16 | 富通集团有限公司 | Optical fiber preform processing method and optical fiber preform |
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| CN103553325A (en) * | 2013-11-11 | 2014-02-05 | 江苏亨通光电股份有限公司 | Method and device for stretching optical fiber preform rod |
| CN106396361A (en) * | 2016-08-26 | 2017-02-15 | 江苏亨通光导新材料有限公司 | Optical fiber perform rod casing tube sintering device, and sintering method thereof |
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- 2016-08-26 CN CN201610737330.8A patent/CN106396361A/en active Pending
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| WO2018036142A1 (en) * | 2016-08-26 | 2018-03-01 | 江苏亨通光导新材料有限公司 | Sintering device with casing tube for optical fibre preform rod and sintering method therefor |
| CN108706865A (en) * | 2018-05-16 | 2018-10-26 | 上海大学 | A kind of more matrix method for preparing optical fiber of silica clad stick cored structure |
| CN112340979A (en) * | 2020-11-09 | 2021-02-09 | 杭州富通通信技术股份有限公司 | Method for manufacturing optical fiber preform |
| CN112939445A (en) * | 2021-03-30 | 2021-06-11 | 北京工业大学 | Doped quartz optical fiber preform and preparation method thereof |
| CN112939445B (en) * | 2021-03-30 | 2023-02-28 | 北京工业大学 | Doped quartz optical fiber preform and preparation method thereof |
| CN115490418A (en) * | 2022-09-06 | 2022-12-20 | 烽火通信科技股份有限公司 | Gas sealing device and gas sealing method for smelting-shrinkage furnace |
| CN115490418B (en) * | 2022-09-06 | 2023-11-03 | 烽火通信科技股份有限公司 | Gas sealing device and gas sealing method for melting shrinkage furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018036142A1 (en) | 2018-03-01 |
| RU2018107936A (en) | 2019-09-05 |
| RU2018107936A3 (en) | 2019-09-10 |
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Effective date of registration: 20191114 Address after: 215200 south of Jintang Road, Wujiang economic and Technological Development Zone, Suzhou, Jiangsu Applicant after: JIANGSU HENGTONG PHOTOCONDUCTIVE NEW MATERIALS CO., LTD. Applicant after: Jiangsu Hengtong Photoelectric Co., Ltd. Address before: 215000, No. 100, Heng Tong Road, Wujiang Economic Development Zone, Suzhou, Jiangsu Applicant before: JIANGSU HENGTONG PHOTOCONDUCTIVE NEW MATERIALS CO., LTD. |
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