WO2019153473A1 - Dispositif d'étirage et de recuit de fibre optique, et fibre optique - Google Patents

Dispositif d'étirage et de recuit de fibre optique, et fibre optique Download PDF

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Publication number
WO2019153473A1
WO2019153473A1 PCT/CN2018/081564 CN2018081564W WO2019153473A1 WO 2019153473 A1 WO2019153473 A1 WO 2019153473A1 CN 2018081564 W CN2018081564 W CN 2018081564W WO 2019153473 A1 WO2019153473 A1 WO 2019153473A1
Authority
WO
WIPO (PCT)
Prior art keywords
annealing
tube
optical fiber
inert gas
blowing portion
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.)
Ceased
Application number
PCT/CN2018/081564
Other languages
English (en)
Chinese (zh)
Inventor
刘成
龚成
陈宏达
沈婷
沈威焘
霍荣佳
邱永龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Fuchunjiang Photoelectric Ltd Co
Original Assignee
Jiangsu Fuchunjiang Photoelectric Ltd Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jiangsu Fuchunjiang Photoelectric Ltd Co filed Critical Jiangsu Fuchunjiang Photoelectric Ltd Co
Publication of WO2019153473A1 publication Critical patent/WO2019153473A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • C03B37/10—Non-chemical treatment
    • 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
    • C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
    • C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
    • C03B37/027—Fibres composed of different sorts of glass, e.g. glass optical fibres
    • C03B37/02718—Thermal treatment of the fibre during the drawing process, e.g. cooling
    • C03B37/02727—Annealing or re-heating
    • 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
    • C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
    • 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
    • C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
    • C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
    • C03B37/029—Furnaces therefor
    • 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

Definitions

  • the invention relates to an optical fiber production device, in particular to an optical fiber drawing annealing device and an optical fiber.
  • the domestic fiber drawing process is basically stable.
  • the length of the temperature field of the usual wire drawing annealing device is short and the minimum temperature in the temperature field is high.
  • the annealing device disclosed in the patent application No. CN106019465A has an inert gas entering from above the drawing furnace. During the downward flow of the inert gas, the temperature of the gas is getting higher and higher, so that the temperature of the temperature field is not gradually decreased from the top to the bottom, the length of the temperature field is short, and the lowest temperature in the temperature field is high, and the fiber is annealed. The temperature at the tube is still kept high.
  • an optical fiber drawing annealing device comprising a drawing furnace, a fixed annealing tube connected under the drawing furnace, further comprising a sealing connection under the fixed annealing tube for extending a moving annealing tube for annealing the temperature field and a driving portion for driving the moving annealing tube
  • the moving annealing tube comprising an outer tube, a graphite inner bush fixedly mounted in the outer tube, and being mounted at a lower end of the outer tube a first blowing portion for supplying an inert gas to the moving annealing tube, wherein the first blowing portion includes a casing, a flow guiding block installed in the casing, and the guiding block is provided with the The inert gas supplies the upper and lower flow channels to the upper and lower ends of the moving annealing tube.
  • the driving portion includes a screw driving mechanism including a screw and a screw and a nut on the screw, the driving mechanism further includes a nut connected to the screw mechanism and the The connection between the outer tubes.
  • the connecting member includes a first link and a second link that are rotatably connected and lockable, and the first link and the second link respectively correspond to the outer tube and the nut
  • the connection is rotated, and the first link and the outer tube, the second link, and the nut are respectively fixed in relative positions by a lock pin.
  • a second blowing portion is disposed under the drawing furnace, and the density of the inert gas blown into the second blowing portion is greater than the density of the inert gas blown into the first blowing portion.
  • the flow rate of the inert gas in the upper flow guiding channel is greater than the flow rate of the inert gas in the lower flow guiding channel.
  • the angle between the upper guiding channel and the axis of the graphite inner liner is 20°-40°.
  • the angle between the lower flow guiding channel and the axis of the graphite inner bushing is 40° to 60°.
  • the bottom cover of the outer casing is provided with a through hole of the optical fiber
  • the lower end of the first blowing portion is provided with a shutter for controlling the size of the airflow in the moving annealing tube and the fixed annealing tube
  • the shutter comprises rotating with the lower end of the outer casing
  • the valve piece is connected and rotated to adjust the size of the passage through the hole, the rotation axis of the valve piece being perpendicular to the bottom cover.
  • the present invention also provides an optical fiber produced by the above-described fiber drawing annealing apparatus.
  • the present invention has the following advantages compared with the prior art: the moving annealing tube of the present invention adjusts the position by the driving portion, determines whether to install according to the requirements of various optical fibers, and installs a movement under the fixed annealing tube.
  • the annealing tube can extend the length of the temperature field, and the first blowing portion is disposed under the moving annealing tube, and the density of the inert gas outputted by the first blowing portion is smaller than the density of the inert gas outputted by the second blowing portion, so the first blowing portion
  • the inert gas output from the part can rise upwards in the ascending process until it reaches the nozzle of the drawing furnace to form a uniform temperature field with a uniform temperature and a longer temperature.
  • the rising gas will be simultaneously in the drawing furnace and the fixed annealing tube.
  • the silicon carbide is blown into the exhaust gas collecting plate of the furnace mouth of the drawing furnace. Reducing the internal stress of the fiber to reduce microcracks and finally reducing the fiber attenuation.
  • the silicon carbide deposited in the drawing furnace and the annealing nozzle can be collected in the exhaust gas collecting plate of the drawing furnace mouth by the lower blowing air, thereby effectively improving the strength and drawing of the fiber. effectiveness.
  • Figure 1 is a schematic view showing the structure of an annealing device
  • Figure 2 is a schematic view showing the structure of the first blowing portion
  • Figure 3 is a schematic view showing the structure of the shutter.
  • the fiber drawing annealing device comprises a drawing furnace, a fixed annealing tube 5 connected to the lower part of the drawing furnace, and a moving annealing tube 6 sealed and connected under the fixed annealing tube 5 for extending the annealing temperature field, for driving
  • the driving portion on which the moving annealing tube 6 moves is attached to the barometer 7 on the fixed annealing tube 5 and the oxygen analyzer 8 attached to the moving annealing tube.
  • the moving annealing tube 6 includes an outer tube 12, a graphite inner liner 11 fixedly mounted in the outer tube 12, and a first portion mounted on the lower end portion of the outer tube 12 and supplying an inert gas to the moving annealing tube 6.
  • a second blowing portion is disposed under the drawing furnace (the drawing furnace and the second blowing portion are both prior art and will not be described herein), and the density of the inert gas blown into the second blowing portion is greater than that of the second blowing portion.
  • the density of the inert gas blown into the blowing portion 9.
  • the flow rate of the inert gas in the upper flow guiding passage 15 is larger than the flow rate of the inert gas in the lower flow guiding passage 16.
  • the angle between the upper guide passage 15 and the axis of the graphite inner liner 11 is 20 to 40.
  • the angle between the lower flow guiding passage 16 and the axis of the graphite inner liner 11 is 40 to 60.
  • the upper flow guiding channel 15 and the lower guiding flow channel 16 are respectively formed by a plurality of strips uniformly distributed around the axis of the graphite inner liner 11 , and an outer flow path is formed between the outer casing 13 and the flow guiding block 14 , and The upper flow guiding passage 15 communicates with the lower flow guiding passage 16, and the side wall of the outer casing 13 is provided with an air inlet.
  • the bottom cover of the outer casing 13 is provided with a through hole of the optical fiber, and the lower end of the first blowing portion 9 is provided with a shutter for controlling the size of the airflow in the moving annealing tube 6 and the fixed annealing tube 5, as shown in FIG.
  • a valve plate 10 is provided that is rotatably coupled to the lower end of the outer casing 13 and that is rotated to adjust the size of the through hole, the shaft of the valve plate 10 being perpendicular to the bottom cover.
  • the valve plate 10 has two pieces and is disposed symmetrically. The valve piece 10 is respectively provided with a semicircular notch. After the two valve pieces 10 are closed, the two semicircular notches are closed to form a center through hole.
  • the drive portion includes a screw drive mechanism including a screw 1 and a threaded connection with a nut 2 on the screw 1, the drive mechanism further comprising a nut 2 and a joint connected to the screw mechanism
  • the connections between the outer tubes 12 are described.
  • the connecting member includes a first link 3 and a second link 4 that are rotatably connected and lockable, the first link 3 and the second link 4 respectively and the outer tube 12 and the
  • the nut 2 is rotationally coupled, and the first link 3 and the outer tube 12, the second link 4, and the nut 2 are respectively fixed in relative positions by a lock pin.
  • the working principle of the invention is as follows: firstly, the moving annealing tube is sent to the vicinity of the lower portion of the fixed annealing tube by the driving portion, finely adjusted by the connecting member, the moving annealing tube is moved directly under the fixed annealing tube, the connecting member is locked, and then the screw is rotated. The moving annealing tube is driven upward and the fixed annealing tube is sealed and spliced, and then the drawing furnace can start working. At the same time, the second blowing portion and the first blowing portion work to form a uniform and significant cooling temperature, and the length is longer.
  • the rising gas simultaneously blows the silicon carbide in the drawing furnace and the fixed annealing tube into the exhaust gas collecting plate of the furnace mouth of the drawing furnace. Reducing the internal stress of the fiber, reducing the microcrack, and finally reducing the fiber attenuation.
  • the attenuation of the fiber produced by the above-mentioned wire drawing furnace is low, and the silicon carbide deposited in the drawing furnace and the annealing nozzle can be collected at the wire drawing furnace by the lower blowing. In the exhaust gas collection board, the fiber strength and the drawing efficiency are effectively improved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Abstract

L'invention concerne un dispositif d'étirage et de recuit de fibre optique, et une fibre optique. Le dispositif d'étirage et de recuit de fibre optique comprend un four d'étirage, un tuyau de recuit fixe (5), un tuyau de recuit mobile (6), et une partie d'entraînement pour amener le tuyau de recuit mobile (6) à se déplacer. Le tuyau de recuit mobile (6) comprend un tuyau externe (12), un revêtement intérieur en graphite (11) monté à demeure dans le tuyau externe (12), et une première partie de soufflage de gaz (9) montée sur la partie d'extrémité inférieure du tuyau externe (12) et introduisant du gaz inerte dans le tuyau de recuit mobile (6) ; la première partie de soufflage de gaz (9) comprend un logement (13) et des blocs de guidage d'écoulement (14) montés dans le logement (13) ; un canal de guidage d'écoulement supérieur (15) et un canal de guidage d'écoulement inférieur (16), transportant le gaz inerte respectivement vers l'extrémité supérieure et vers l'extrémité inférieure du tuyau de recuit mobile (6), sont disposés sur le bloc de guidage d'écoulement (14). Les microfissures sont réduites par réduction de la contrainte interne de la fibre optique, et l'affaiblissement de la fibre optique est finalement réduit ; de plus, le carbure de silicium déposé dans le four d'étirage et dans l'ouverture du tuyau de recuit est collecté dans une plaque de collecte de gaz résiduaire au niveau de l'ouverture du four d'étirage par soufflage d'air vers le bas, d'où une amélioration efficace de la résistance de la fibre optique et de l'efficacité d'étirage.
PCT/CN2018/081564 2018-02-12 2018-04-02 Dispositif d'étirage et de recuit de fibre optique, et fibre optique Ceased WO2019153473A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201810145788.3 2018-02-12
CN201810145788.3A CN108383375B (zh) 2018-02-12 2018-02-12 光纤拉丝退火装置及光纤

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WO2019153473A1 true WO2019153473A1 (fr) 2019-08-15

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WO (1) WO2019153473A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116718026A (zh) * 2023-06-16 2023-09-08 南京华信藤仓光通信有限公司 一种加热炉回收气体再利用的装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109592894A (zh) * 2018-12-25 2019-04-09 通鼎互联信息股份有限公司 一种光纤拉丝密封装置及密封方法
CN110655321B (zh) * 2019-10-17 2024-05-31 远东通讯有限公司 一种低损耗光纤拉丝系统及其拉丝方法
CN110683752B (zh) * 2019-11-19 2024-02-09 赣州讯飞腾传导技术有限公司 一种光纤拉丝冷却系统及其冷却方法
CN111348826B (zh) * 2020-04-29 2024-05-07 上海煜志科技有限公司 光纤拉丝炉

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004155610A (ja) * 2002-11-05 2004-06-03 Sumitomo Electric Ind Ltd 光ファイバの製造方法および製造装置
CN201890848U (zh) * 2010-11-12 2011-07-06 江苏通鼎光电股份有限公司 一种高速拉丝用光纤退火延伸管
JP2011173734A (ja) * 2010-02-23 2011-09-08 Fujikura Ltd 紡糸機用延長管及び紡糸機
CN203212462U (zh) * 2013-05-10 2013-09-25 江苏法尔胜光子有限公司 一种涡流式保护气石墨拉丝炉
CN106019465A (zh) * 2016-06-01 2016-10-12 中天科技光纤有限公司 一种超低损耗光纤生产系统及其应用于生产的工艺
CN207845493U (zh) * 2018-02-12 2018-09-11 江苏富春江光电有限公司 光纤拉丝退火装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04198036A (ja) * 1990-11-29 1992-07-17 Fujikura Ltd 光ファイバの線引用加熱炉
JPH10194770A (ja) * 1996-12-27 1998-07-28 Kobe Steel Ltd 光ファイバ用線引炉
EP1243568B1 (fr) * 1999-05-27 2013-03-06 Sumitomo Electric Industries, Ltd. Procede de production pour fibre optique
US20030200772A1 (en) * 2002-04-30 2003-10-30 Foster John D. Methods and apparatus for forming optical fiber
WO2004007383A1 (fr) * 2002-07-10 2004-01-22 Sumitomo Electric Industries, Ltd. Fibre optique et son procede de fabrication
JP4568003B2 (ja) * 2004-03-30 2010-10-27 学校法人トヨタ学園 光ファイバの製造方法及び製造装置
JP5621194B2 (ja) * 2009-01-22 2014-11-05 住友電気工業株式会社 光ファイバの製造方法及び光ファイバの製造装置
JP6295234B2 (ja) * 2015-08-04 2018-03-14 株式会社フジクラ 光ファイバの製造方法
JP2017081796A (ja) * 2015-10-29 2017-05-18 株式会社フジクラ 光ファイバの製造方法
CN106277746A (zh) * 2016-08-19 2017-01-04 青岛文创科技有限公司 一种大有效面积光纤的制备工艺
CN107082560B (zh) * 2017-05-15 2023-02-10 江苏亨通光纤科技有限公司 一种光纤退火延伸管

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004155610A (ja) * 2002-11-05 2004-06-03 Sumitomo Electric Ind Ltd 光ファイバの製造方法および製造装置
JP2011173734A (ja) * 2010-02-23 2011-09-08 Fujikura Ltd 紡糸機用延長管及び紡糸機
CN201890848U (zh) * 2010-11-12 2011-07-06 江苏通鼎光电股份有限公司 一种高速拉丝用光纤退火延伸管
CN203212462U (zh) * 2013-05-10 2013-09-25 江苏法尔胜光子有限公司 一种涡流式保护气石墨拉丝炉
CN106019465A (zh) * 2016-06-01 2016-10-12 中天科技光纤有限公司 一种超低损耗光纤生产系统及其应用于生产的工艺
CN207845493U (zh) * 2018-02-12 2018-09-11 江苏富春江光电有限公司 光纤拉丝退火装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116718026A (zh) * 2023-06-16 2023-09-08 南京华信藤仓光通信有限公司 一种加热炉回收气体再利用的装置

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CN108383375A (zh) 2018-08-10

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