CN109264986B - A kind of sheath covering plate structure of optical fiber drawing heating furnace - Google Patents
A kind of sheath covering plate structure of optical fiber drawing heating furnace Download PDFInfo
- Publication number
- CN109264986B CN109264986B CN201811413823.1A CN201811413823A CN109264986B CN 109264986 B CN109264986 B CN 109264986B CN 201811413823 A CN201811413823 A CN 201811413823A CN 109264986 B CN109264986 B CN 109264986B
- Authority
- CN
- China
- Prior art keywords
- cover board
- cavity
- rotary table
- sheath
- sleeve pipe
- 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.)
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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
- C03B37/01—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
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2205/00—Fibre drawing or extruding details
- C03B2205/30—Means for continuous drawing from a preform
-
- 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
-
- 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
- C03B2205/80—Means for sealing the preform entry or upper end of the furnace
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)
- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
The invention discloses a kind of sheath covering plate structures of optical fiber drawing heating furnace, including pretective sleeve pipe and cover board, the pretective sleeve pipe includes the bottom that rotary table sheath segment and rotary table sheath segment are located at pretective sleeve pipe, the inside of the rotary table sheath segment is equipped with perforative round table-like cavity from top to bottom, the following table area of round table-like cavity is greater than the top surface area of round table-like cavity, pretective sleeve pipe is placed on the upper surface of the cover board, cover board upper surface is equipped with a circle gasket groove and the gasket groove is located at the contact position of the cover board and rotary table sheath segment lower surface, washer is installed in gasket groove, cover board upper surface, which is equipped with a circle oil trap, and the oil trap is located at the position that the slope inner wall of rotary table sheath segment extends downwardly to make on the inner wall of slope oily is pooled in oil trap downwards, the gasket groove is located at the outside of oil trap.The present invention reduces occurring the non-round situation of covering in the drawing process of optical wand, the non-round rate of fibre cladding is reduced.
Description
Technical field
The present invention relates to optical fiber drawing heating furnaces, and in particular to a kind of sheath covering plate structure of optical fiber drawing heating furnace.
Background technique
Optical fiber drawing heating furnace is satisfactory thin to be drawn into diameter after a kind of heating melting by preform
The heating equipment of small fiber optic fiber, the sheath covering plate structure of existing optical fiber drawing heating furnace include pretective sleeve pipe and cover board, such as Fig. 1
With shown in Fig. 2, sheath tube inner chamber is straight-tube shape, and the sealing ring between pretective sleeve pipe and heating furnace cover board is easy to emit during heating
Oil causes a large amount of fibre claddings non-round rate over-standard phenomenon occur, because as the length of preform (abbreviation optical wand) is more next
Longer, the optical fiber quantity-produced time is increasingly longer, and original washer cannot be guaranteed to use safely under continuous high temperature, and the time is long
If will condensate oil rouge, grease volatilizees at high temperature, is diffused into optical wand, cause to be easy to appear covering in the drawing process of optical wand
, there is greasy dirt drip phenomenon, greasy dirt, which drops onto, to be added in non-round situation, and the grease meeting vertical downflow that pretective sleeve pipe inner wall is cooling
In hot stove, make occur the non-round situation of covering in the drawing process of optical wand.Washer has used best material, Yao Gaishan mass
The non-round rate for improving to reduce fibre cladding can only be done to existing sheath covering plate structure.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of drawing optical fibers heating in view of the above shortcomings of the prior art
The sheath covering plate structure of the sheath covering plate structure of furnace, this optical fiber drawing heating furnace changes original pretective sleeve pipe and covering plate structure,
It is effectively reduced washer and bleed phenomenon occurs, and even if there are oiliness volatile matters, it also can be cold from the slope inner wall of pretective sleeve pipe
But it is pooled in oil trap, will not directly drop onto heating furnace afterwards, reduce in the drawing process of optical wand that covering occur non-round
The case where, reduce the non-round rate of fibre cladding.
To realize the above-mentioned technical purpose, the technical scheme adopted by the invention is as follows:
A kind of sheath covering plate structure of optical fiber drawing heating furnace, including pretective sleeve pipe and cover board, the pretective sleeve pipe include rotary table
Sheath segment and rotary table sheath segment are located at the bottom of pretective sleeve pipe, and the inside of the rotary table sheath segment is equipped with perforative rotary table from top to bottom
Shape cavity, the following table area of round table-like cavity are greater than the top surface area of round table-like cavity, and pretective sleeve pipe is placed on the upper of the cover board
Surface, cover board upper surface is equipped with a circle gasket groove and the gasket groove is located at the contact position of the cover board and rotary table sheath segment lower surface
It sets, washer is installed, cover board upper surface is equipped with a circle oil trap and the oil trap is located at the slope of rotary table sheath segment in gasket groove
To make the oil on the inner wall of slope be pooled in oil trap downwards, the gasket groove is located at oil trap for the position that inner wall extends downwardly
Outside.
Technical solution as a further improvement of that present invention, the pretective sleeve pipe further include straight tube sheath segment, the straight tube shield
The lower surface of set section is fixedly connected with the upper surface of rotary table sheath segment.
The inside of technical solution as a further improvement of that present invention, the straight tube sheath segment extends equipped with elongatedness direction
And perforative cylindrical cavity, the following table area of the cylindrical cavity and the upper surface of the round table-like cavity in rotary table sheath segment
Product is equal, and the lower surface of cylindrical cavity is aligned with the upper surface of round table-like cavity and straight tube sheath segment and rotary table sheath segment are fixed
It is integrated mechanism.
Technical solution as a further improvement of that present invention, the middle part of the cover board are equipped with the through slot for interting optical wand,
The top surface area of the through slot is less than the following table area of the cylindrical cavity in rotary table sheath segment.
The surface of technical solution as a further improvement of that present invention, the cover board is equipped with inlet and outlet and cover board
Inside is equipped with cooling water and recycles cavity, and the cooling water circulation cavity is connected to inlet and outlet respectively, the cooling water
The cooling water and cooling water that flowing is equipped in torus body are recycled by external circulating system.
Technical solution as a further improvement of that present invention, the flow of cooling water are 18-20L/min, the temperature of cooling water
For 16-23 degree.
The invention has the benefit that the inside straight-tube shape below existing pretective sleeve pipe is changed to round table-like by the present invention, make
Pretective sleeve pipe inner wall is ramp shaped, increases cooling space, and the washer on cover board is compared with prior art apart from the straight of optical wand
Diameter is farther, less by heat, and the phenomenon that bleed occur also can be less, reduces grease and evaporate into phenomenon in optical wand, reduces light
The non-round rate of fine covering；Even if separately having oiliness volatile matter later, after also cooling down from the slope of the round table-like cavity of pretective sleeve pipe
It is pooled in oil trap, will not drop onto heating furnace, fibre cladding is made non-round phenomenon occur.In addition can periodically to washer and
Oil trap is cleaned so as to improve optical fiber quality, and the non-round rate of fibre cladding is reduced.
Detailed description of the invention
Fig. 1 is the sheath barrel structure of the prior art.
Fig. 2 is the covering plate structure of the prior art.
Fig. 3 is sheath barrel structure of the invention.
Fig. 4 is covering plate structure of the invention.
Fig. 5 is sheath covering plate structure of the invention.
Specific embodiment
A specific embodiment of the invention is further illustrated below according to Fig. 1 to Fig. 5:
Referring to Fig. 1 and Fig. 2, the inner cavity of the pretective sleeve pipe 1 in optical fiber drawing heating furnace in the prior art is straight-tube shape, cover board
Washer is equipped in 6 gasket groove 7, washer is closer apart from optical wand, and the time of optical fiber laser heating is increasingly longer, and washer is easy to emit
Oil is evaporate into optical wand, and fibre cladding is caused non-round rate phenomenon occur, and grease cooling on 1 inner wall of pretective sleeve pipe of straight-tube shape
Can vertical downflow, there is greasy dirt drip phenomenon, drop onto heating furnace, make to occur covering in the drawing process of optical wand non-round
The case where.
The present embodiment improves on the basis of original, has invented a kind of sheath cover board of new optical fiber drawing heating furnace
Structure, including pretective sleeve pipe 1 and cover board 6, as shown in Figure 3 and Figure 4, the pretective sleeve pipe 1 are optical wand pretective sleeve pipe, including straight tube sheath segment
2 and rotary table sheath segment 3, the inside of the straight tube sheath segment 2 is equipped with the cylindrical cavity 4 that elongatedness direction extends through, institute
The inside for stating rotary table sheath segment 3 is equipped with perforative round table-like cavity 5 from top to bottom, the following table area of the cylindrical cavity 4 with
The top surface area of round table-like cavity 5 is equal, and the following table area of round table-like cavity 5 is greater than the top surface area of round table-like cavity 5, described
The lower surface of straight tube sheath segment 2 be fixedly connected with the upper surface of rotary table sheath segment 3 and the lower surface of cylindrical cavity 4 with it is round table-like
The upper surface of cavity 5 is aligned, and straight tube sheath segment 2 and rotary table sheath segment 3 are fixed to each other and are integrated mechanism, and the middle part of cover board 6 is equipped with
For interting the through slot 9 of optical wand, pretective sleeve pipe 1 is placed on the upper surface of the cover board 6, and 6 upper surface of cover board is equipped with a circle gasket groove 7
And the gasket groove 7 is located at the contact position of the cover board 6 and 3 lower surface of rotary table sheath segment, is equipped with washer in gasket groove 7, protects
Sleeve 1 is contacted since self gravitation effect is pressed on cover board 6 with washer sealing, and the top surface area of through slot 9 is less than rotary table sheath
The following table area of the cylindrical cavity 4 of section 3,6 upper surface of cover board is equipped with a circle oil trap 8 and the oil trap 8 is located at rotary table sheath
The position that the slope inner wall of section 3 extends downwardly is to make the oil on the inner wall of slope be pooled in oil trap 8 downwards, the gasket groove
7 are located at the outside of oil trap 8.
The surface of the cover board 6, which is equipped with inside inlet and outlet and cover board 6, is equipped with cooling water circulation cavity, described cold
But water circulation cavity be connected to inlet and outlet respectively, be equipped in the cooling water torus body cooling water 10 flowed and
Cooling water 10 is recycled by external circulating system.
The present embodiment uses the big optical wand of 1500-2000km, and the flow of cooling water is in 18-20L/min, cooling water in cover board 6
Temperature setting between 16-23 degree.The every melting 4-5 root optical wand of the present embodiment, cleans the cover board of a pretective sleeve pipe 1 and heating furnace
6, and require to clean washer and oil trap 8 in cleaning emphatically, reduce the non-round rate of fibre cladding.
The inside straight-tube shape of 1 lower section of existing pretective sleeve pipe is changed to round table-like by the present invention, makes 1 inner wall slope shape of pretective sleeve pipe
Shape increases cooling space, and the washer on cover board 6 is farther apart from the diameter of optical wand compared with prior art, more by heat
Few, the phenomenon that bleed occur also can be less, is less prone to greasy dirt drip phenomenon；It, also can be from even if separately having oiliness volatile matter later
It is pooled in oil trap 8, will not be dropped onto heating furnace after cooling at slope.The present embodiment will also keep periodically cleaning pretective sleeve pipe
1, cover board 6, and require to clean so as to improve optical fiber quality washer and oil trap 8 in cleaning emphatically, reduce optical fiber packet
The non-round rate of layer.The present invention can reduce optical fiber core covering out-of-roundness and great unqualified phenomenon occurs, improve optical fiber yield, main
If improving the covering plate structure of drawing heating furnace, reducing washer bleed pollutes optical wand.
Protection scope of the present invention includes but is not limited to embodiment of above, and protection scope of the present invention is with claims
Subject to, replacement, deformation, the improvement that those skilled in the art that any pair of this technology is made is readily apparent that each fall within of the invention
Protection scope.
Claims (6)
1. a kind of sheath covering plate structure of optical fiber drawing heating furnace, including pretective sleeve pipe and cover board, it is characterised in that: the pretective sleeve pipe
Including rotary table sheath segment and rotary table sheath segment is located at the bottom of pretective sleeve pipe, and the inside of the rotary table sheath segment is equipped with to be passed through from top to bottom
The round table-like cavity worn, the following table area of round table-like cavity are greater than the top surface area of round table-like cavity, and pretective sleeve pipe is placed on described
The upper surface of cover board, cover board upper surface is equipped with a circle gasket groove and the gasket groove is located at the cover board and rotary table sheath segment lower surface
Contact position, washer is installed, cover board upper surface is equipped with a circle oil trap and the oil trap is located at rotary table sheath in gasket groove
The position that the slope inner wall of section extends downwardly is to make the oil on the inner wall of slope be pooled in oil trap downwards, the washer slot position
In the outside of oil trap.
2. the sheath covering plate structure of optical fiber drawing heating furnace according to claim 1, it is characterised in that: the pretective sleeve pipe is also
Including straight tube sheath segment, the lower surface of the straight tube sheath segment is fixedly connected with the upper surface of rotary table sheath segment.
3. the sheath covering plate structure of optical fiber drawing heating furnace according to claim 2, it is characterised in that: the straight tube sheath
The inside of section is equipped with the cylindrical cavity that elongatedness direction extends through, and the following table area and rotary table of the cylindrical cavity protect
Cover section in round table-like cavity top surface area it is equal, the lower surface of cylindrical cavity be aligned with the upper surface of round table-like cavity and
Straight tube sheath segment and rotary table sheath segment are fixed as one mechanism.
4. the sheath covering plate structure of optical fiber drawing heating furnace according to claim 1, it is characterised in that: the cover board
Middle part is equipped with the through slot for interting optical wand, and the top surface area of the through slot is less than the round table-like cavity in rotary table sheath segment
Following table area.
5. the sheath covering plate structure of optical fiber drawing heating furnace according to claim 4, it is characterised in that: the table of the cover board
Face, which is equipped with inside inlet and outlet and cover board, to be equipped with cooling water and recycles cavity, the cooling water circulation cavity respectively with water inlet
Mouth is connected to water outlet, is equipped with the cooling water of flowing in the cooling water torus body and cooling water is followed by external circulating system
Ring uses.
6. the sheath covering plate structure of optical fiber drawing heating furnace according to claim 5, it is characterised in that: the flow of cooling water
For 18-20L/min, the temperature of cooling water is 16-23 degree.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811413823.1A CN109264986B (en) | 2018-11-26 | 2018-11-26 | A kind of sheath covering plate structure of optical fiber drawing heating furnace |
| CH01294/19A CH715731B1 (en) | 2018-11-26 | 2019-08-22 | Arrangement for drawing optical fibers. |
| PCT/CN2019/102007 WO2020107961A1 (en) | 2018-11-26 | 2019-08-22 | Sheath cover structure of optical fiber wire drawing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811413823.1A CN109264986B (en) | 2018-11-26 | 2018-11-26 | A kind of sheath covering plate structure of optical fiber drawing heating furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109264986A CN109264986A (en) | 2019-01-25 |
| CN109264986B true CN109264986B (en) | 2019-03-29 |
Family
ID=65191109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811413823.1A Active CN109264986B (en) | 2018-11-26 | 2018-11-26 | A kind of sheath covering plate structure of optical fiber drawing heating furnace |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN109264986B (en) |
| CH (1) | CH715731B1 (en) |
| WO (1) | WO2020107961A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109264986B (en) * | 2018-11-26 | 2019-03-29 | 南京华信藤仓光通信有限公司 | A kind of sheath covering plate structure of optical fiber drawing heating furnace |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101973701A (en) * | 2010-10-28 | 2011-02-16 | 中天科技光纤有限公司 | Oil fume blowing and collecting device for fiber drawing tower |
| CN102249534A (en) * | 2011-05-31 | 2011-11-23 | 长飞光纤光缆有限公司 | Full diameter optical fiber preform rod induction fiber drawing furnace heating apparatus |
| CN207276494U (en) * | 2017-09-05 | 2018-04-27 | 江苏斯德雷特通光光纤有限公司 | One kind extension stove lower sealing device |
| CN108409130A (en) * | 2018-05-21 | 2018-08-17 | 江苏亨通光纤科技有限公司 | Drawing optical fibers annealing device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB503369A (en) * | 1937-05-25 | 1939-04-05 | Corning Glass Works | Process and apparatus for the manufacture of foliated glass and product produced thereby |
| CN201857344U (en) * | 2010-11-02 | 2011-06-08 | 中天科技光纤有限公司 | Lampblack sweeping and collecting device for optical fiber drawing tower |
| CN205917171U (en) * | 2016-08-26 | 2017-02-01 | 江苏富春江光电有限公司 | Air sealer of optical -fiber wiredrawing furnace |
| CN206289171U (en) * | 2016-12-16 | 2017-06-30 | 青海中利光纤技术有限公司 | The water-cooling air-sealing device of fibre drawing furnace |
| CN207276495U (en) * | 2017-09-05 | 2018-04-27 | 江苏斯德雷特通光光纤有限公司 | A kind of air sealing device of wiredrawing furnace for reducing optical wand wire drawing |
| CN109264986B (en) * | 2018-11-26 | 2019-03-29 | 南京华信藤仓光通信有限公司 | A kind of sheath covering plate structure of optical fiber drawing heating furnace |
-
2018
- 2018-11-26 CN CN201811413823.1A patent/CN109264986B/en active Active
-
2019
- 2019-08-22 WO PCT/CN2019/102007 patent/WO2020107961A1/en active Application Filing
- 2019-08-22 CH CH01294/19A patent/CH715731B1/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101973701A (en) * | 2010-10-28 | 2011-02-16 | 中天科技光纤有限公司 | Oil fume blowing and collecting device for fiber drawing tower |
| CN102249534A (en) * | 2011-05-31 | 2011-11-23 | 长飞光纤光缆有限公司 | Full diameter optical fiber preform rod induction fiber drawing furnace heating apparatus |
| CN207276494U (en) * | 2017-09-05 | 2018-04-27 | 江苏斯德雷特通光光纤有限公司 | One kind extension stove lower sealing device |
| CN108409130A (en) * | 2018-05-21 | 2018-08-17 | 江苏亨通光纤科技有限公司 | Drawing optical fibers annealing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CH715731B1 (en) | 2021-02-15 |
| CN109264986A (en) | 2019-01-25 |
| WO2020107961A1 (en) | 2020-06-04 |
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