CN203212462U - 一种涡流式保护气石墨拉丝炉 - Google Patents

一种涡流式保护气石墨拉丝炉 Download PDF

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CN203212462U
CN203212462U CN 201320251728 CN201320251728U CN203212462U CN 203212462 U CN203212462 U CN 203212462U CN 201320251728 CN201320251728 CN 201320251728 CN 201320251728 U CN201320251728 U CN 201320251728U CN 203212462 U CN203212462 U CN 203212462U
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graphite
heater
furnace
middle sleeve
gas
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潘丰
尤茂勇
朱建开
马跃丰
俞华
洪留明
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FA'ERSHENG PHOTON Co Ltd JIANGSU
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FA'ERSHENG PHOTON Co Ltd JIANGSU
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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
    • C03B37/02—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
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2205/00—Fibre drawing or extruding details
    • C03B2205/60—Optical fibre draw furnaces
    • C03B2205/90—Manipulating the gas flow through the furnace other than by use of upper or lower seals, e.g. by modification of the core tube shape or by using baffles
    • C03B2205/96—Manipulating the gas flow through the furnace other than by use of upper or lower seals, e.g. by modification of the core tube shape or by using baffles using tangential feed approximately perpendicular to the draw axis
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2205/00—Fibre drawing or extruding details
    • C03B2205/60—Optical fibre draw furnaces
    • C03B2205/90—Manipulating the gas flow through the furnace other than by use of upper or lower seals, e.g. by modification of the core tube shape or by using baffles
    • C03B2205/98—Manipulating the gas flow through the furnace other than by use of upper or lower seals, e.g. by modification of the core tube shape or by using baffles using annular gas inlet distributors

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  • 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)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Abstract

本实用新型涉及一种涡流式保护气石墨拉丝炉，它包括炉体、加热线圈、石墨隔热管、石墨中套管、马弗管、延伸管、炉顶板和炉顶气盘，其特征是在炉顶气盘内侧壁上均匀开有若干斜喷气孔，斜喷气孔的倾斜角度α为20°～45°。本实用新型具有能使拉制光纤丝径均匀稳定和减少生产原料浪费的优点。

Description

一种涡流式保护气石墨拉丝炉
技术领域
    本实用新型涉及一种石墨拉丝炉，尤其涉及一种涡流式保护气石墨拉丝炉。
背景技术
目前，光纤拉制用石墨拉丝炉包括炉体、加热线圈、石墨隔热管、石墨中套管、马弗管、延伸管、炉顶板和炉顶气盘，炉体的上、下壁对应各开有一拉丝孔，石墨隔热管穿过上、下拉丝孔设置在炉体中，石墨中套管设置在石墨隔热管中，加热线圈绕装在石墨隔热管的外壁上，马弗管一端连接在石墨中套管的下端内侧壁上，马弗管另一端伸出炉体与延伸管连接，炉顶气盘通过炉顶板设置在石墨中套管上方的炉体上，炉顶气盘内侧壁上均匀开有若干个对着炉顶气盘圆心的喷气孔；在光纤拉制的过程中，将带有石英把手的光纤预制棒吊挂到石墨拉丝炉的石墨中套管内，通过加热线圈中的交变电流使得石墨中套管的温度上升，进而加热熔融光纤预制棒；为了防止石墨拉丝炉中的石墨中套管不被氧化，在高温拉制光纤时，需要从炉顶气盘的喷气孔向炉内吹入惰性保护气体；由于喷气孔对着炉顶气盘的圆心吹气，在光纤预制棒拉丝的最后阶段，由于石英把手的直径与光纤预制棒之间直径相差较大，喷气孔吹出的惰性保护气体在沿着石英把手向下流动时，因光纤预制棒的上端面挡住了部分气体会导致炉内气流紊乱，使纤预制棒在涡流式保护气石墨拉丝炉内晃动，从而使得拉制的光纤发生波动，破坏了光纤拉丝的稳定性，影响光纤丝径的均匀性，紊乱的气流甚至会造成拉制的光纤断丝，使余下的光纤预制棒无法正常拉丝，造成原材料的浪费，增加了生产成本。
发明内容
针对以上缺点，本实用新型的目的在于提供一种能使拉制光纤丝径均匀稳定、减少生产原料浪费的涡流式保护气石墨拉丝炉。
本实用新型的技术内容为：一种涡流式保护气石墨拉丝炉，它包括炉体、加热线圈、石墨隔热管、石墨中套管、马弗管、延伸管、炉顶板和炉顶气盘，炉体的上、下壁对应各开有一拉丝孔，石墨隔热管穿过上、下拉丝孔设置在炉体中，石墨中套管设置在石墨隔热管中，加热线圈绕装在石墨隔热管的外壁上，马弗管一端连接在石墨中套管的下端内侧壁上，马弗管另一端伸出炉体与延伸管连接，炉顶气盘通过炉顶板设置在石墨中套管上方的炉体上，其特征是在炉顶气盘内侧壁上均匀开有若干斜喷气孔，斜喷气孔的倾斜角度α为20°～45°。
与现有技术相比，本实用新型的具有的优点为：将炉顶气盘侧壁上的喷气孔制成为带一定倾斜角度的斜喷气孔，喷出的气体就不会直接喷向炉顶气盘圆心，而是形成涡流式气流，使得在光纤预制棒拉丝的最后阶段，通入的惰性保护气体仍能够沿着石墨中套管的内侧壁呈涡流式旋转向下运动，从而避免气流沿石英把手竖下运动时会碰到光纤预制棒上端面而造成气流紊乱，使得拉制出的光纤丝径均匀稳定，提高了拉丝的效率，减少了生产的成本。
附图说明
图1为本实用新型的结构示意图。
图2为炉顶气盘A-A向俯视图。
具体实施方式
如图1和图2所示，一种涡流式保护气石墨拉丝炉，它包括炉体1、加热线圈2、石墨隔热管3、石墨中套管4、马弗管5、延伸管6、炉顶板7和炉顶气盘8，炉体1的上、下壁对应各开有一拉丝孔1.1，石墨隔热管3穿过上、下拉丝孔1.1设置在炉体1中，石墨中套管4设置在石墨隔热管3中，加热线圈2绕装在石墨隔热管3的外壁上，马弗管5一端连接在石墨中套管4的下端内侧壁上，另一端伸出炉体1与延伸管6连接，炉顶气盘8通过炉顶板7设置在石墨中套管4上方的炉体1上，其特征是在炉顶气盘8内侧壁上均匀开有若干个斜喷气孔8.1，斜喷气孔8.1的倾斜角度α为30°。

Claims (1)

1.一种涡流式保护气石墨拉丝炉，它包括炉体、加热线圈、石墨隔热管、石墨中套管、马弗管、延伸管、炉顶板和炉顶气盘，炉体的上、下壁对应各开有一拉丝孔，石墨隔热管穿过上、下拉丝孔设置在炉体中，石墨中套管设置在石墨隔热管中，加热线圈绕装在石墨隔热管的外壁上，马弗管一端连接在石墨中套管的下端内侧壁上，马弗管另一端伸出炉体与延伸管连接，炉顶气盘通过炉顶板设置在石墨中套管上方的炉体上，其特征是在炉顶气盘内侧壁上均匀开有若干斜喷气孔，斜喷气孔的倾斜角度α为20°～45°。
CN 201320251728 2013-05-10 2013-05-10 一种涡流式保护气石墨拉丝炉 Expired - Lifetime CN203212462U (zh)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019153473A1 (zh) * 2018-02-12 2019-08-15 江苏富春江光电有限公司 光纤拉丝退火装置及光纤
CN110885183A (zh) * 2019-11-22 2020-03-17 青海中利光纤技术有限公司 一种半开合式光纤降温装置
CN113292241A (zh) * 2021-05-26 2021-08-24 中天科技光纤有限公司 光纤拉丝炉、光纤制备装置、光纤制备方法及细径光纤
EP3770126A4 (en) * 2018-03-23 2021-12-15 Sumitomo Electric Industries, Ltd. OVEN GAS SUPPLY DEVICE, FIBER OPTIC PRODUCTION DEVICE, AND FIBER OPTIC PRODUCTION PROCESS

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019153473A1 (zh) * 2018-02-12 2019-08-15 江苏富春江光电有限公司 光纤拉丝退火装置及光纤
EP3770126A4 (en) * 2018-03-23 2021-12-15 Sumitomo Electric Industries, Ltd. OVEN GAS SUPPLY DEVICE, FIBER OPTIC PRODUCTION DEVICE, AND FIBER OPTIC PRODUCTION PROCESS
US11795099B2 (en) 2018-03-23 2023-10-24 Sumitomo Electric Industries, Ltd. Furnace gas feeding device, optical fiber production device, and optical fiber production method
CN110885183A (zh) * 2019-11-22 2020-03-17 青海中利光纤技术有限公司 一种半开合式光纤降温装置
CN113292241A (zh) * 2021-05-26 2021-08-24 中天科技光纤有限公司 光纤拉丝炉、光纤制备装置、光纤制备方法及细径光纤
WO2022247102A1 (zh) * 2021-05-26 2022-12-01 中天科技光纤有限公司 光纤拉丝炉、光纤制备装置、光纤制备方法及细径光纤
EP4219418A4 (en) * 2021-05-26 2024-04-24 Zhongtian Technology Fiber Potics Co., Ltd GLASS FIBER DRAWING FURNACE, GLASS FIBER MANUFACTURING APPARATUS, GLASS FIBER MANUFACTURING METHOD AND SMALL DIAMETER GLASS FIBER
CN113292241B (zh) * 2021-05-26 2024-05-14 中天科技光纤有限公司 光纤拉丝炉、光纤制备装置、光纤制备方法及细径光纤

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