CN108409129A - A kind of energy saving fibre drawing furnace - Google Patents
A kind of energy saving fibre drawing furnace Download PDFInfo
- Publication number
- CN108409129A CN108409129A CN201810379076.8A CN201810379076A CN108409129A CN 108409129 A CN108409129 A CN 108409129A CN 201810379076 A CN201810379076 A CN 201810379076A CN 108409129 A CN108409129 A CN 108409129A
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- CN
- China
- Prior art keywords
- shielding case
- energy saving
- drawing furnace
- fibre drawing
- electromagnetic induction
- Prior art date
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Classifications
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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
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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)
- Furnace Details (AREA)
Abstract
The present invention relates to a kind of energy saving fibre drawing furnaces, include furnace shell, vertically vertical direction is installed on graphite tube for the centre of furnace shell, and the periphery cladding insulating layer of graphite tube simultaneously installs quartz cover, electromagnetic induction coil is installed outside quartz cover, it is characterised in that screening arrangement is installed on outside electromagnetic induction coil.The present invention can pass through furnace shell with the hermetic section magnetic line of force, avoid causing energy loss on furnace shell by the way that tubular shielding case is arranged；Increase the alternating magnetic field density on graphite tube simultaneously, improves the electromagnetic induction efficiency on graphite tube；Graphite felt thickness is thinned using composite heat-insulating layer, energy expenditure of the thermal insulation material to electromagnetic field can be reduced, non-conductor adiabator layer can maintain heat insulation effect not generate electromagnetic induction with alternating magnetic field again and consume energy, reduce electromagnetic induction energy loss of the thermal insulation material in alternating magnetic field, achievees the purpose that energy-saving.
Description
Technical field
The present invention relates to a kind of energy saving fibre drawing furnaces for drawing optical fibers, belong to drawing optical fibers process equipment technology neck
Domain.
Background technology
Optical fiber is formed by drawing optical fibers stove heat melt drawing by preform.In drawing process, in fiber drawing furnace
Temperature reaches about 2000 DEG C.Early stage small-sized wire drawing stove is graphite resistor furnace, and heating principle is heating power in graphite resistance, then
Graphite tube is conducted heat to, the heat of graphite tube is transmitted to preform again.At present since preform size is more next
Bigger, the volume and power of fiber drawing furnace also increase therewith, therefore generally use more efficient electromagnetic induction heating furnace, heating
Principle is to lead to electric current of intermediate frequency on coil, and the graphite tube in coil generates induced current in alternating magnetic field, is made in induced current
With lower graphite tube self-heating, re-radiation to preform.
In order to reach heat insulation effect, certain thickness thermal insulation material is equipped between graphite tube and coil, when coil and graphite
The bigger heat insulation effect of diameter dimension difference of cylinder is also poorer, and alternating magnetic field cannot penetrate graphite tube, induction efficiency well
Also it can decrease.
About 2000 DEG C of fiber drawing furnace DIE Temperature has stringent control, by these in fiber drawing process to impurity volatilization
Part is limited, so being all at present to do thermal insulation material using graphite felt, but graphite is also conductor, therefore thermal insulation material is in alternating magnetic field
In also can postpartum induced current, consume a part of inductive energy, if thermal insulation material is too thick, although heat insulation effect increases,
On the one hand thermal insulation material consumption energy can in this way increased, on the other hand will increase the spacing of coil and graphite tube, to reduce
The induction efficiency of graphite tube.If thermal insulation material is too thin, although the induction efficiency of graphite tube increases, heat insulation effect declines
, equally increase overall energy consumption.
Invention content
A kind of energy-saving light is provided technical problem to be solved by the present invention lies in above-mentioned the shortcomings of the prior art is overcome
Fine fiber drawing furnace, it is simple in structure, and setting is reasonable, good energy-conserving effect.
The present invention be solve the problems, such as it is set forth above used by technical solution be：Include furnace shell, the intermediate edge of furnace shell
Upper and lower vertical direction is installed on graphite tube, and the periphery cladding insulating layer of graphite tube simultaneously installs quartz cover, electromagnetism is installed outside quartz cover
Induction coil, it is characterised in that screening arrangement is installed on outside electromagnetic induction coil.
By said program, the screening arrangement is tubular shielding case.
By said program, the tubular shielding case is the hollow tube-shape shielding case for being provided with closed cavity.
By said program, the hollow tube-shape shielding case is the tubular shielding case for being provided with annular closed cavity.
By said program, the hollow tube-shape shielding case is the tubular shielding for being provided with annular closed helicla flute cavity
Cover.
By said program, closed cavity and the water-in and water-out connector of the hollow tube-shape shielding case are respectively connected with, and constitute water
Cooling hollow tube-shape shielding case.
By said program, the periphery of the internal diameter of the tubular shielding case and electromagnetic induction coil keeps that 5 ~ 10mm's is unilateral
Gap.
By said program, the tubular shielding case is made of permeability magnetic material.
By said program, the insulating layer is the composite heat-insulating layer that graphite felt is composed with non-conductor thermal insulation material.
By said program, including the graphite felt insulating layer, non-conductor adiabator layer is coated on outer.
By said program, the non-conductor adiabator layer is made of ceramic fibre or aeroge.
The beneficial effects of the present invention are：1. by the way that tubular shielding case is arranged, stove can be passed through with the hermetic section magnetic line of force
Shell avoids causing energy loss on furnace shell；Increase the alternating magnetic field density on graphite tube simultaneously, improves the electromagnetism on graphite tube
Induction efficiency；2. graphite felt thickness is thinned using composite heat-insulating layer, energy expenditure of the thermal insulation material to electromagnetic field can be reduced,
Non-conductor adiabator layer can maintain heat insulation effect not generate electromagnetic induction with alternating magnetic field again and consume energy, reduce thermal insulating material
Expect the electromagnetic induction energy loss in alternating magnetic field, achievees the purpose that energy-saving.3. water cooling hollow tube-shape is arranged to shield
Cover, can reduce influence of the fever to equipment of shielding case, improve the service life of shielding case.
Description of the drawings
Fig. 1 is the positive sectional structure chart of one embodiment of the invention.
Electromagnetic induction coil magnetic line of force distribution schematic diagram when Fig. 2 unshielded devices.
Fig. 3 is that the present invention installs the electromagnetic induction coil magnetic line of force distribution schematic diagram after screening arrangement.
Specific implementation mode
The embodiment further illustrated the present invention below in conjunction with attached drawing.
One embodiment of the present of invention is as shown in Figure 1, include furnace shell 3, furnace shell installs bell 2 and furnace bottom respectively up and down
Plate 4, vertically vertical direction is installed on columnar graphite tube 10, graphite tube and opening on bell and drop-bottom for the centre of furnace shell
Hole is corresponding, for installing preform 1 and wire drawing.The periphery of graphite tube coats insulating layer, and the insulating layer is graphite
The composite heat-insulating layer that felt and non-conductor thermal insulation material are composed, including graphite felt insulating layer 9, non-conductor adiabator layer 8 wraps
Outside overlaying on, the non-conductor adiabator layer is made of ceramic fibre.Quartz cover 7 is installed outside composite heat-insulating layer, outside quartz cover
Electromagnetic induction coil 6 is installed, electromagnetic induction coil leads to electric current of intermediate frequency, generates alternating magnetic field, is installed on outside electromagnetic induction coil
Screening arrangement 5, the screening arrangement are tubular shielding case, and tubular shielding case is the tubular shielding for being provided with annular closed cavity
Cover, closed cavity and the water-in and water-out connector 11,12 of hollow tube-shape shielding case are respectively connected with, and constitute the shielding of water cooling hollow tube-shape
Cover, when use, are passed through cooling water.The internal diameter of tubular shielding case and the periphery of electromagnetic induction coil keep the unilateral gap of 5 ~ 10mm,
To prevent the sparking of shielding case and electromagnetic induction coil.The magnetic line of force for having installed screening arrangement is distributed as shown in figure 3, induction coil
Outside magnetic line is constrained in screening arrangement, is not diffused on furnace shell and is generated electromagnetic induction, and the coil inside magnetic line of force is more
It is intensive, pass through the density of line of magnetic force of graphite tube to increase.Magnetic shielding device plays energy loss caused by reducing magnetic line of force diffusion
Effect, and increase the alternating magnetic field density on graphite tube, improve the electromagnetic induction efficiency of fiber drawing furnace.The material of screening arrangement is to lead
Magnetic material, such as silicon steel.
Claims (10)
1. a kind of energy saving fibre drawing furnace includes furnace shell, vertically vertical direction is installed on graphite tube, graphite for the centre of furnace shell
The periphery cladding insulating layer of cylinder simultaneously installs quartz cover, installs electromagnetic induction coil outside quartz cover, it is characterised in that in electromagnetic induction
It is installed on screening arrangement outside coil.
2. energy saving fibre drawing furnace as described in claim 1, it is characterised in that the screening arrangement is tubular shielding case.
3. energy saving fibre drawing furnace as described in claim 2, it is characterised in that the tubular shielding case is closed to be provided with
The hollow tube-shape shielding case of cavity.
4. energy saving fibre drawing furnace as described in claim 3, it is characterised in that the hollow tube-shape shielding case is to be provided with
The tubular shielding case of annular closed cavity.
5. energy saving fibre drawing furnace as described in claim 3, it is characterised in that the hollow tube-shape shielding case is to be provided with
The tubular shielding case of annular closed helicla flute cavity.
6. energy saving fibre drawing furnace as described in claim 3, it is characterised in that the confined air of the hollow tube-shape shielding case
Chamber is respectively connected with water-in and water-out connector, constitutes water cooling hollow tube-shape shielding case.
7. pressing energy saving fibre drawing furnace according to claim 2 or 3, it is characterised in that the internal diameter of the tubular shielding case and electricity
The periphery of magnetic induction coil keeps the unilateral gap of 5 ~ 10mm；The tubular shielding case is made of permeability magnetic material.
8. energy saving fibre drawing furnace as described in claim 1 or 2, it is characterised in that the insulating layer is that graphite felt is led with non-
The composite heat-insulating layer that body thermal insulation material is composed.
9. energy saving fibre drawing furnace as described in claim 8, it is characterised in that including the graphite felt insulating layer, non-conductor
Adiabator layer is coated on outer.
10. energy saving fibre drawing furnace as described in claim 8, it is characterised in that the non-conductor adiabator layer is by ceramics
Fiber or aeroge are constituted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810379076.8A CN108409129A (en) | 2018-04-25 | 2018-04-25 | A kind of energy saving fibre drawing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810379076.8A CN108409129A (en) | 2018-04-25 | 2018-04-25 | A kind of energy saving fibre drawing furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108409129A true CN108409129A (en) | 2018-08-17 |
Family
ID=63136768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810379076.8A Pending CN108409129A (en) | 2018-04-25 | 2018-04-25 | A kind of energy saving fibre drawing furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108409129A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109467311A (en) * | 2018-12-25 | 2019-03-15 | 特恩驰(南京)光纤有限公司 | A kind of induction receiver for fibre drawing furnace |
| CN110746110A (en) * | 2019-12-10 | 2020-02-04 | 普天线缆集团有限公司 | Improved 1550 low loss optical fiber manufacturing apparatus and method of operation |
| CN114589299A (en) * | 2022-03-14 | 2022-06-07 | 上海元定科技有限公司 | Heat preservation coil structure for directional single crystal precision casting furnace |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102786221A (en) * | 2012-08-09 | 2012-11-21 | 杭州富通通信技术股份有限公司 | Light-shielding and heat-insulating device for fiber drawing furnaces |
| CN103974477A (en) * | 2014-03-26 | 2014-08-06 | 佛山市顺德区通脉电器有限公司 | Efficient and energy-saving electromagnetic induction heating device |
| CN104478211A (en) * | 2014-12-31 | 2015-04-01 | 江苏通鼎光棒有限公司 | Device and method for heating and melting optical fiber preform rod |
| CN105366937A (en) * | 2015-08-31 | 2016-03-02 | 中天科技光纤有限公司 | Composite heat preservation device for two kinds of fiber drawing furnaces |
-
2018
- 2018-04-25 CN CN201810379076.8A patent/CN108409129A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102786221A (en) * | 2012-08-09 | 2012-11-21 | 杭州富通通信技术股份有限公司 | Light-shielding and heat-insulating device for fiber drawing furnaces |
| CN103974477A (en) * | 2014-03-26 | 2014-08-06 | 佛山市顺德区通脉电器有限公司 | Efficient and energy-saving electromagnetic induction heating device |
| CN104478211A (en) * | 2014-12-31 | 2015-04-01 | 江苏通鼎光棒有限公司 | Device and method for heating and melting optical fiber preform rod |
| CN105366937A (en) * | 2015-08-31 | 2016-03-02 | 中天科技光纤有限公司 | Composite heat preservation device for two kinds of fiber drawing furnaces |
Non-Patent Citations (1)
| Title |
|---|
| 李元元: "《新型材料科学与技术 金属材料卷》", 30 September 2012, 华南理工大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109467311A (en) * | 2018-12-25 | 2019-03-15 | 特恩驰(南京)光纤有限公司 | A kind of induction receiver for fibre drawing furnace |
| CN110746110A (en) * | 2019-12-10 | 2020-02-04 | 普天线缆集团有限公司 | Improved 1550 low loss optical fiber manufacturing apparatus and method of operation |
| CN114589299A (en) * | 2022-03-14 | 2022-06-07 | 上海元定科技有限公司 | Heat preservation coil structure for directional single crystal precision casting furnace |
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Application publication date: 20180817 |