CN111348826A - Optical fiber drawing furnace - Google Patents
Optical fiber drawing furnace Download PDFInfo
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- CN111348826A CN111348826A CN202010356504.2A CN202010356504A CN111348826A CN 111348826 A CN111348826 A CN 111348826A CN 202010356504 A CN202010356504 A CN 202010356504A CN 111348826 A CN111348826 A CN 111348826A
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- Prior art keywords
- cylinder
- barrel
- water outlet
- connecting arm
- optical fiber
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 38
- 238000012681 fiber drawing Methods 0.000 title claims abstract description 34
- 238000010438 heat treatment Methods 0.000 claims abstract description 62
- 238000004321 preservation Methods 0.000 claims abstract description 26
- 230000001681 protective effect Effects 0.000 claims abstract description 21
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 17
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 17
- 241001330002 Bambuseae Species 0.000 claims abstract description 17
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 17
- 239000011425 bamboo Substances 0.000 claims abstract description 17
- 238000005491 wire drawing Methods 0.000 claims abstract description 7
- 239000000835 fiber Substances 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 171
- 238000001816 cooling Methods 0.000 claims description 56
- 238000003780 insertion Methods 0.000 claims description 19
- 230000037431 insertion Effects 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000007599 discharging Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 46
- 239000002826 coolant Substances 0.000 description 9
- 238000009413 insulation Methods 0.000 description 9
- 239000000110 cooling liquid Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
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
-
- 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
- C03B2205/62—Heating means for drawing
- C03B2205/63—Ohmic resistance heaters, e.g. carbon or graphite resistance heaters
-
- 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
- C03B2205/72—Controlling or measuring the draw furnace temperature
Abstract
The embodiment of the invention belongs to the field of optical fiber manufacturing, and particularly relates to an optical fiber drawing furnace which comprises: a heat preservation section of thick bamboo, insert the heating member in the heat preservation section of thick bamboo, heating member and the coaxial setting of a heat preservation section of thick bamboo, the feed inlet is seted up along the axis direction to a heat preservation section of thick bamboo, and the heating member forms the charge bar along the axis direction and inserts the passageway and go out the silk passageway, and optic fibre wire drawing stove still includes: the device comprises a closed container, a feeding pipe joint, a discharging pipe joint, a first air inlet pipe and a second air inlet pipe; a closed container, comprising: the heating device comprises a barrel body for accommodating a heating body and a heat preservation barrel, a closed barrel top plate and a bottom plate, wherein a feeding pipe joint is arranged on the top plate, a gas inlet end for introducing protective gas is further arranged on the feeding pipe joint, a discharging pipe joint is arranged on the bottom plate, a first gas inlet pipe is arranged on the barrel body, and a second gas inlet pipe is arranged on the bottom plate. Compared with the prior art, the external air is effectively prevented from entering the barrel body from the feeding pipe joint on the top plate and the discharging pipe joint on the bottom plate, so that the heat-insulating barrel and the heating body are effectively protected.
Description
Technical Field
The embodiment of the invention belongs to the field of optical fiber manufacturing, and particularly relates to an optical fiber drawing furnace.
Background
Optical fiber drawing is an important link in the production process of manufacturing optical fibers, and the optical fiber drawing quality is influenced by the optical fiber drawing process, such as the temperature of a drawing furnace, the drawing speed, the drawing tension, the cleanliness of a drawing environment and the like. The inert protective gas is a main foreign substance entering the wire drawing furnace and has the function of preventing oxygen from entering the furnace body to cause oxidation of heat insulation materials and heating materials in the furnace. However, the existing method generally only simply introduces protective gas into the furnace body, and although the method can protect the heat preservation material and the heating material in the furnace body to a certain extent, the feed inlet and the wire drawing outlet of the furnace body are communicated with the outside, so that air can enter the furnace body, and heating components and heat preservation components in the furnace can be damaged due to oxidation over time.
Disclosure of Invention
The invention aims to provide an optical fiber drawing furnace, which can effectively protect a heat-insulating barrel and a heating furnace in the drawing furnace and avoid the damage of the heat-insulating barrel and a heating body caused by the air entering the furnace.
In order to achieve the above object, an embodiment of the present invention provides an optical fiber drawing furnace including: the heat preservation section of thick bamboo, insert heating member in the heat preservation section of thick bamboo, the heating member with the heat preservation section of thick bamboo is coaxial to be set up, the feed inlet is seted up along the axis direction to the heat preservation section of thick bamboo, the heating member along the axis direction form with the charge bar that the feed inlet is relative inserts the passageway, with the play silk passageway of charge bar insertion passageway intercommunication, optic fibre wire drawing stove still includes:
a closed container, comprising: a cylinder body for accommodating the heating body and the heat-insulating cylinder, a top plate for sealing the top opening of the cylinder body, and a bottom plate for sealing the bottom opening of the cylinder body;
a feed pipe joint and a discharge pipe joint; the feeding pipe joint is arranged on the top plate and is coaxial with the feeding hole of the heat-insulating cylinder, and the feeding pipe joint is also provided with an air inlet end for introducing shielding gas; the discharge pipe joint is arranged on the bottom plate, is the same as the wire outlet channel and is coaxially arranged;
the first air inlet pipe is arranged on the cylinder and used for introducing protective gas into the cylinder;
and the second air inlet pipe is arranged on the bottom plate and used for introducing protective gas into the cylinder.
Compared with the prior art, the embodiment of the invention has the advantages that as the wire drawing furnace comprises the closed container capable of accommodating the heating body and the heat preservation cylinder, the closed container is composed of the cylinder body, the top plate for closing the top opening of the cylinder body and the bottom plate for closing the bottom opening of the cylinder body, the top plate is provided with the feeding pipe joint with the air inlet end, the cylinder body is provided with the first air inlet pipe, the bottom plate for closing the heating body is provided with the second air inlet pipe, the first air inlet pipe, the second air inlet pipe and the air inlet end on the feeding pipe joint can be respectively connected with the gas protection device in practical application, the gas protection device can respectively convey the protective gas to the feeding pipe joint, the interior of the cylinder body and the bottom of the cylinder body, and the protective gas entering the cylinder body can be respectively discharged from the feeding pipe joint, the cylinder body can be always filled with the protective gas in the mode, and the external air can be effectively prevented from, thereby playing the effective protection to a heat preservation section of thick bamboo and heating member.
Further, the feed pipe joint comprises:
the main body feeding pipe is arranged on the top plate in a penetrating way and is fixed on the top plate; the main body feeding pipe is communicated with the cylinder body and used for inserting a material rod into the cylinder body;
the air inlet sleeve is sleeved on the main body feeding pipe and is mutually separated from the main body feeding pipe to form an air cavity; the air inlet sleeve is arranged on the air inlet sleeve, the air cavity is communicated with the main body feeding pipe, and the air inlet end is arranged on the air inlet sleeve.
Further, the main body feeding pipe and the air inlet sleeve are coaxially arranged.
Furthermore, the first air inlet pipe penetrates through and is fixed on the barrel body along the direction perpendicular to the axis of the barrel body, and the first air inlet pipe is over against the heat-insulating barrel.
Furthermore, one side of the heat-insulating cylinder, which is opposite to the bottom plate, is an opening side, the heating body is inserted into the heat-insulating cylinder from the opening side, and the feed inlet of the heat-insulating cylinder is positioned between the feed pipe joint and the heating body.
Further, the heating body includes: the heating body is used for forming the material rod insertion channel and the wire outlet channel, and the positive connecting arm and the negative connecting arm horizontally extend from the heating body to the cylinder wall direction of the cylinder body;
the positive pole linking arm with the negative pole linking arm exposes outside the heat preservation section of thick bamboo, and is located the heat preservation section of thick bamboo with between the bottom plate.
Further, the positive electrode connecting arm and the negative electrode connecting arm are symmetrically arranged along the axis of the heating body.
Further, the optical fiber drawing furnace further comprises:
the first electrode connecting arm is partially inserted into the cylinder along the direction vertical to the axis of the cylinder and is connected with the positive electrode connecting arm;
and the second electrode connecting arm is partially inserted into the barrel along the direction perpendicular to the axis of the barrel and is connected with the negative electrode connecting arm.
Furthermore, the first electrode connecting arm is provided with a first water inlet and a first water outlet, the first electrode connecting arm is also internally provided with a first water cooling channel, the first water cooling channel is a roundabout channel extending from the root part to the head part of the first electrode connecting arm, one end of the first water cooling channel is communicated with the first water inlet, and the other end of the first water cooling channel is communicated with the first water outlet;
the second electrode connecting arm is provided with a second water inlet and a second water outlet, a second water-cooling channel is further arranged in the second electrode connecting arm, the second water-cooling channel is a roundabout channel extending from the root of the second electrode connecting arm to the head, one end of the second water-cooling channel is communicated with the second water inlet, and the other end of the second water-cooling channel is communicated with the second water outlet.
Furthermore, the first water inlet and the first water outlet are arranged at the root part of the first electrode connecting arm, and the second water inlet and the second water outlet are arranged at the root part of the second electrode connecting arm.
Further, an upper water inlet and an upper water outlet are formed in the top plate, and an upper water cooling channel communicated with the upper water inlet and the upper water outlet is formed in the top plate;
the upper water inlet and the upper water outlet are respectively positioned on two sides of the top plate along the direction vertical to the axis of the cylinder body;
or the upper water inlet and the upper water outlet are respectively positioned on the same side of the top plate in the direction vertical to the axis of the cylinder body;
when the upper water inlet and the upper water outlet are respectively positioned on the same side of the top plate in the direction perpendicular to the axis of the cylinder, the upper water cooling channel is a circuitous channel arranged in the direction perpendicular to the axis of the cylinder.
Further, a lower water inlet and a lower water outlet are formed in the bottom plate, and a lower water cooling channel communicated with the lower water inlet and the lower water outlet is formed in the bottom plate;
the lower water inlet and the lower water outlet are respectively positioned on two sides of the bottom plate along the direction vertical to the axis of the cylinder body;
or the lower water inlet and the lower water outlet are respectively positioned on the same side of the bottom plate in the direction vertical to the axis of the cylinder body;
when the lower water inlet and the lower water outlet are respectively positioned on the same side of the top plate in the direction perpendicular to the axis of the cylinder, the lower water cooling channel is a roundabout channel arranged in the direction perpendicular to the axis of the cylinder.
Further, the cartridge includes: the cooling device comprises an outer cylinder and an inner cylinder which is coaxial with and opposite to the outer cylinder, wherein a cooling cavity is formed between the inner cylinder and the outer cylinder;
the outer barrel is provided with a water inlet end and a water outlet end, the water inlet end is arranged at the bottom of the outer barrel, and the water outlet end is arranged at the top of the outer barrel.
Further, along the axis direction perpendicular to the barrel, the water inlet end and the water outlet end are arranged on the same side of the outer barrel, or the water inlet end and the water outlet end are respectively arranged on two opposite sides of the outer barrel.
Further, the optical fiber drawing furnace further comprises:
the insertion tube is partially inserted into the barrel along the direction perpendicular to the axial line of the barrel and is communicated with the barrel;
the infrared detector is provided with an infrared detection end; the infrared detection end is positioned in the insertion tube and used for detecting the temperature in the barrel through the insertion tube;
the insert pipe is provided with an air inlet, and the air inlet is communicated with the barrel through the insert pipe.
Drawings
FIG. 1 is a schematic top view of an optical fiber drawing furnace according to a first embodiment of the present invention;
FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken at B-B of FIG. 1;
FIG. 4 is a schematic top view of an optical fiber drawing furnace according to a second embodiment of the present invention;
FIG. 5 is a cross-sectional view taken at C-C of FIG. 4;
fig. 6 is a cross-sectional view taken at D-D in fig. 4.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solutions claimed in the claims of the present application can be implemented without these technical details and with various changes and modifications based on the following embodiments.
A first embodiment of the present invention relates to an optical fiber drawing furnace, as shown in fig. 1, 2, and 3, including: the furnace comprises a heat-insulating cylinder 1 consisting of a furnace shell and a heat-insulating material, and a heating body 2 inserted into the heat-insulating cylinder 1, wherein the heating body 2 and the heat-insulating cylinder 1 are coaxially arranged. The heat preservation cylinder 1 is provided with a feed inlet 11 along the axial direction, and the heating body 2 forms a material rod insertion channel 21 opposite to the feed inlet 11 and a wire outlet channel 22 communicated with the material rod insertion channel 21 along the axial direction.
As shown in fig. 2 and 3, the optical fiber drawing furnace according to the present embodiment further includes: a closed vessel 3, the closed vessel 3 comprising: a cylinder 31 for accommodating the heating body 2 and the heat insulating cylinder 1, a top plate 32 for closing the top opening of the cylinder 31, and a bottom plate 33 for closing the bottom opening of the cylinder 31.
As shown in fig. 2 and 3, the optical fiber drawing furnace according to the present embodiment further includes: a feeding pipe joint 4 arranged on the top plate 32, a discharging pipe joint 5 arranged on the bottom plate 33, a first air inlet pipe 6 arranged on the barrel 31 and a second air inlet pipe 7 arranged on the bottom plate 33. Wherein, the feed pipe joint 4 is arranged coaxially with the feed inlet 11 of the heat preservation cylinder 1, and the discharge pipe joint 5 is communicated with the wire outlet channel 22 of the heating body 2 and is arranged coaxially.
Also, in the present embodiment, as shown in fig. 2 and 3, the feed pipe joint 4 further has a gas inlet 41 for introducing shielding gas, the gas inlet 41 can be used for introducing shielding gas into the feed pipe joint 4, and the first gas inlet 6 and the second gas inlet 7 are respectively used for introducing shielding gas into the barrel 31.
It can be seen from the above that, in practical application, as shown in fig. 2 and fig. 3, the gas protection devices can be respectively connected to the first gas inlet pipe 6, the second gas inlet pipe 7 and the gas inlet end 41 on the feed pipe joint 4, and the protective gas can be respectively delivered to the feed pipe joint 4, the interior of the barrel 31 and the bottom of the barrel 31 through the gas protection devices, and the protective gas entering the barrel 31 can be respectively discharged from the feed pipe joint 4, so that the barrel 31 can be always filled with the protective gas, and external air is effectively prevented from entering the barrel 31 from the feed pipe joint 4 on the top plate 32 and the discharge pipe joint 5 on the bottom plate 33, thereby effectively protecting the heat preservation barrel 1 and the heating body 2.
Specifically, in the present embodiment, as shown in fig. 2 and 3, the feed pipe joint 4 includes: a main body feeding pipe 42 which is arranged and fixed on the top plate 32 in a penetrating way, and an air inlet sleeve 43 which is sleeved on the main body feeding pipe 42. Wherein the main body feeding pipe 42 is communicated with the cylinder 31, and the air inlet sleeve 43 is separated from the main body feeding pipe 42 to form an air cavity 44. In addition, as shown in fig. 2 and 3, air holes 45 are distributed on the main body feeding pipe 42, each air hole 45 is communicated with the air cavity 44 and the main body feeding pipe 42, and the air inlet end 41 is arranged on the air inlet sleeve 43. In practical application, as shown in fig. 2, the gas inlet 41 can be connected to a gas protection device, and the shielding gas can be introduced into the main body feeding pipe 42 from the gas cavity 44 through the gas holes 45 through the gas inlet 41, and meanwhile, since the shielding gas is generally inert gas and has light weight, the shielding gas entering the main body feeding pipe 42 can be directly discharged from the rod inserting side of the main body feeding pipe 42, so that the external air is effectively prevented from entering the barrel 31 through the main body feeding pipe 42. Also, preferably, in the present embodiment, as shown in fig. 2 and 3, the main body feeding pipe 42 is coaxially disposed with the air inlet sleeve 43, so that the shielding gas entering the main body feeding pipe 42 from the air chamber 44 can uniformly fill the main body feeding pipe 42, and further the possibility of the external air entering the barrel 31 is reduced.
In the same way, as shown in fig. 2 and fig. 3, because the first intake pipe 6 and the second intake pipe 7 are respectively arranged on the barrel 31 and the bottom plate 33, and the first intake pipe 6 and the second intake pipe 7 are respectively connected with the gas protection device, the protective gas can be conveyed to the inside of the barrel 31 by means of the first intake pipe 6 and the second intake pipe 7, so that the protective gas can be uniformly distributed in the whole barrel 31, the protective gas is effectively prevented from being discharged from the main body feed pipe 42 of the feed pipe joint 4 in advance due to light weight, and the bottom of the barrel 31 is free from the phenomenon of protective gas flooding, thereby effectively preventing the external air from entering the barrel 31 from the feed pipe joint 5, and further avoiding the oxidation phenomenon of the heat preservation barrel 1 and the heating body 2.
However, in the present embodiment, as shown in fig. 2, the first intake duct 6 is inserted and fixed in the cylindrical body 31 in the direction perpendicular to the axial direction of the cylindrical body 31, and the first intake duct 6 faces the heat insulating cylinder 1. Of course, the first air inlet pipe 6 may be provided with a plurality of pipes, and the pipes may be arranged around the axis of the cylinder 31 at equal intervals. Therefore, it can be seen that the protective gas is conveyed into the cylinder 31 through the first air inlet pipes 6, so that the protective gas 31 filled in the cylinder 31 is more uniformly distributed, and the heating body 2 and the heat preservation cylinder 1 are further prevented from being influenced by the outside air.
In addition, it should be mentioned that, in the present embodiment, the thermal insulation barrel 1 is a carbon felt thermal insulation barrel, and, as shown in fig. 2 and fig. 3, one side of the thermal insulation barrel 1 relative to the bottom plate 33 is an opening side (not labeled in the figures), that is, the opening side is located at the bottom of the thermal insulation barrel 1, the heating body 2 can be inserted into the thermal insulation barrel 1 from the opening side of the bottom of the thermal insulation barrel 1, and the corresponding feed inlet 11 on the thermal insulation barrel 1 is opened at the top of the thermal insulation barrel 1, so that the feed inlet 11 of the thermal insulation barrel 1 is located between the feed pipe joint 4 and the heating body 2. In order to realize the wire drawing treatment of the heating body 2 on the material rod, as shown in fig. 1, the heating body 2 comprises: a heating body 23 forming the material rod inserting channel 21 and the wire outlet channel 22, and a positive electrode connecting arm 24 and a negative electrode connecting arm 25 horizontally extending from the heating body 23 to the cylinder wall direction of the cylinder 31. Meanwhile, the heating body 23 is inserted into the heat-insulating cylinder 1, and the positive connecting arm 24 and the negative connecting arm 25 are both exposed outside the heat-insulating cylinder 1 and are located between the heat-insulating cylinder 1 and the bottom plate 33, and the positive connecting arm 24 and the negative connecting arm 25 are symmetrically arranged with the axis of the heating body 2. Therefore, in order to satisfy the heating requirement of the heating body 2 for the material rod, as shown in fig. 1 and 2, the optical fiber drawing furnace of the present embodiment further includes: first electrode linking arm 8 and second electrode linking arm 9, and first electrode linking arm 8 inserts in barrel 31 along the axis direction part of perpendicular to barrel 31, and be connected with anodal linking arm 24, and second electrode linking arm 9 inserts in barrel 31 along the axis direction part of perpendicular to barrel 31, and be connected with negative pole linking arm 25, make first anodal linking arm 24 and negative pole linking arm 25 of heating body 2 not only can be respectively through first electrode linking arm 8 and the external power supply of second electrode linking arm 9, realize the heating demand of heating main part 23 to the material stick, and still can carry out effectual support fixedly to heating body 2 with the help of first electrode linking arm 8 and second electrode linking arm 9.
Furthermore, as can be seen from the above, since the heating body 2 is inserted into the insulating cylinder 1 from the opening side of the bottom of the insulating cylinder 1, the positive electrode connecting arm 24 and the negative electrode connecting arm 25 of the heating body 2 are both located below the insulating cylinder 1, and the protective gas delivered into the cylinder 31 through the second gas inlet pipe 7 provided on the bottom plate 33 of the cylinder 31 can directly protect the positive electrode connecting arm 24 and the negative electrode connecting arm 25 of the heating body 2.
Further, as shown in fig. 3, the optical fiber drawing furnace according to the present embodiment preferably further includes: an insertion tube 10 and an infrared detector 20. Wherein the insertion tube 10 is partially inserted into the cylinder 31 in a direction perpendicular to the axial direction of the cylinder 31 and communicates with the cylinder 31 of the hermetic container 3, and the infrared ray detector 20 has an infrared detection end 201, and the infrared detection end 201 is located in the insertion tube 10 for detecting the temperature in the cylinder 31 in real time through the insertion tube 10. In addition, in order to protect the infrared detector 20, the insertion tube 10 is provided with an air inlet 101, the air inlet 101 can be communicated with the cylinder 31 through the insertion tube 10, and in practical application, the air inlet 101 can be connected to a gas protection device, and protective gas is conveyed into the insertion tube 10 through the air inlet 101 by the gas protection device, so that the infrared detector 20 is protected.
A second embodiment of the present invention relates to an optical fiber drawing furnace, which is a further improvement of the first embodiment, and is mainly improved in that, in the present embodiment, as shown in fig. 4, 5, and 6, the first electrode connecting arm 8 has a first water inlet 81 and a first water outlet 82. Meanwhile, the first electrode connecting arm 8 is also provided with a first water cooling channel 83 therein. The first water-cooling channel 83 is a winding channel extending from the root of the first electrode connecting arm 8 to the head, and one end of the first water-cooling channel 83 is communicated with the first water inlet 81, and the other end of the first water-cooling channel 83 is communicated with the first water outlet 82.
Correspondingly, as shown in fig. 5 and 6, the second electrode connecting arm 9 has a second water inlet 91 and a second water outlet 92, and the second electrode connecting arm 9 also has a second water cooling channel 93. The second water-cooling channel 93 is a circuitous channel extending from the root of the second electrode connecting arm 9 to the head, and one end of the second water-cooling channel 93 is communicated with the second water inlet 91, and the other end of the second water-cooling channel 93 is communicated with the second water outlet 92.
Therefore, in practical application, the first water inlet 81 and the first water outlet 82 of the first electrode connecting arm 8 and the second water inlet 91 and the second water outlet 92 of the second electrode connecting arm 9 can be connected with the cooling liquid circulating device, so that the cooling liquid circulating device can realize circulation of cooling liquid in the first electrode connecting arm 8 by means of the first water inlet 81, the first water outlet 82 and the first water cooling channel 83, and meanwhile, the cooling liquid circulating device can realize circulation of cooling liquid in the second electrode connecting arm 9 by means of the second water inlet 91, the second water outlet 92 and the second water cooling channel 93, so that the first electrode connecting arm 8 and the second electrode connecting arm 9 are cooled, and protection of the first electrode connecting arm 8 and the second electrode connecting arm 9 is realized.
Further, in order to avoid damage to the sealed container 3 due to heat generated by the heating body 2 when heating the billet, in the present embodiment, as shown in fig. 5 and 6, the top plate 32, the bottom plate 33, and the cylindrical body 31 may be cooled by a coolant circulation device in the sealed container 3.
Specifically, as shown in fig. 5 and 6, the top plate 32 is provided with an upper water inlet 321 and an upper water outlet 322, and the top plate 32 is provided with an upper water cooling passage 323 communicating the upper water inlet 321 and the upper water outlet 322. The upper water inlet 321 and the upper water outlet 322 are respectively located on both sides of the top plate 32 in the direction perpendicular to the axis of the cylinder 31. That is, the upper water inlet 321 and the upper water outlet 322 are symmetrically disposed on the top plate 32 with the axis of the cylinder 31 as a symmetry axis, and one end of the corresponding upper water cooling channel 323 is communicated with the upper water inlet 322, and the other end is communicated with the upper water outlet 322. Therefore, in practical application, as shown in fig. 6, the upper water inlet 321 and the upper water outlet 322 may be connected to the coolant circulating device, so that the coolant circulating device may circulate the coolant in the upper water cooling channel 323 by means of the upper water inlet 321, the upper water outlet 322 and the upper water cooling channel 323, thereby cooling the top plate 32. Of course, as an alternative, the upper water inlet 321 and the upper water outlet 322 may be respectively located on the same side of the top plate 32 in the direction perpendicular to the axis of the cylinder 31, and the corresponding upper water cooling channel 323 may be a winding channel arranged perpendicular to the axis of the cylinder 31, in this way, the cooling of the top plate 32 can be realized.
In addition, the bottom plate 33 may have the same structural design as the top plate 32, specifically, as shown in fig. 5 and 6, a lower water inlet 331 and a lower water outlet 332 are formed in the bottom plate 33, and an upper water cooling channel 333 communicating the lower water inlet 331 and the lower water outlet 332 is formed in the bottom plate 33. And, the lower water inlet 331 and the lower water outlet 332 are respectively located at both sides of the bottom plate 33 in the direction perpendicular to the axis of the cylinder 31. That is, the lower water inlet 331 and the lower water outlet 332 are symmetrically disposed on the bottom plate 33 with the axis of the cylinder 31 as a symmetry axis, and one end of the corresponding lower water cooling passage 333 is communicated with the lower water inlet 331 and the other end is communicated with the lower water outlet 332. In practical application, as shown in fig. 6, the lower water inlet 331 and the lower water outlet 332 can be connected to the coolant circulation device, so that the coolant circulation device can realize the circulation and transportation of the coolant in the lower water cooling channel 333 by means of the lower water inlet 331, the lower water outlet 332 and the upper water cooling channel 333, thereby realizing the cooling of the bottom plate 33. Of course, as an alternative, the lower water inlet 331 and the lower water outlet 332 may be respectively located on the same side of the bottom plate 33 along the direction perpendicular to the axial direction of the barrel 31, and the corresponding lower water cooling passage 333 may be a winding passage arranged perpendicular to the axial direction of the barrel 31, in this way, the cooling of the bottom plate 33 can be realized.
Note that, in the present embodiment, as shown in fig. 5 and 6, the cylindrical body 31 includes: the cooling device includes an outer cylinder 311, an inner cylinder 312 coaxial with and opposed to the outer cylinder 311, and a cooling chamber 313 formed between the inner cylinder 312 and the outer cylinder 311. Meanwhile, the outer barrel 311 has a water inlet end 314 and a water outlet end 315, and the water inlet end 314 and the water outlet end 315 are disposed along the axial direction of the barrel 31, specifically, the water inlet end 314 is disposed at the bottom of the outer barrel 311, and the water outlet end 315 is disposed at the top of the outer barrel 311. Therefore, in practical application, the water inlet end 314 and the water outlet end 315 can be connected with the cooling liquid ring device, so that the cooling medium entering the cooling cavity 313 can continuously rise, and can be discharged from the water outlet end 315 when rising to the top of the cylinder 31, and can return to the cooling liquid circulating device again, so that the whole cooling cavity 313 can be filled with the cooling medium all the time, the cylinder 31 can be continuously cooled, the cylinder 31 is prevented from being affected by the high temperature generated by the heating body 2 when being heated, and the service life of the cylinder 31 is prolonged.
Moreover, it should be noted that, in order to meet the different connection requirements of the water inlet end 314 and the water outlet end 315, the water inlet end 314 and the water outlet end 315 may be disposed on the same side of the outer cylinder 311 along the direction perpendicular to the axis of the cylinder 31, or the water inlet end 314 and the water outlet end 315 may be disposed on two opposite sides of the outer cylinder 311, respectively, so that the optical fiber drawing furnace has a wider application range.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.
Claims (15)
1. An optical fiber drawing furnace comprising: the heat preservation section of thick bamboo, insert heating member in the heat preservation section of thick bamboo, the heating member with the heat preservation section of thick bamboo is coaxial to be set up, the feed inlet is seted up along the axis direction to the heat preservation section of thick bamboo, the heating member along the axis direction form with the charge bar that the feed inlet is relative inserts the passageway, with the play silk passageway of charge bar insertion passageway intercommunication, its characterized in that, optic fibre wire drawing stove still includes:
a closed container, comprising: a cylinder body for accommodating the heating body and the heat-insulating cylinder, a top plate for sealing the top opening of the cylinder body, and a bottom plate for sealing the bottom opening of the cylinder body;
a feed pipe joint and a discharge pipe joint; the feeding pipe joint is arranged on the top plate and is coaxial with the feeding hole of the heat-insulating cylinder, and the feeding pipe joint is also provided with an air inlet end for introducing shielding gas; the discharge pipe joint is arranged on the bottom plate, communicated with the wire outlet channel and coaxially arranged;
the first air inlet pipe is arranged on the cylinder and used for introducing protective gas into the cylinder;
and the second air inlet pipe is arranged on the bottom plate and used for introducing protective gas into the cylinder.
2. The optical fiber drawing furnace according to claim 1, wherein the feed tube coupling comprises:
the main body feeding pipe is arranged on the top plate in a penetrating way and is fixed on the top plate; the main body feeding pipe is communicated with the cylinder body and used for inserting a material rod into the cylinder body;
the air inlet sleeve is sleeved on the main body feeding pipe and is mutually separated from the main body feeding pipe to form an air cavity; the air inlet sleeve is arranged on the air inlet sleeve, the air cavity is communicated with the main body feeding pipe, and the air inlet end is arranged on the air inlet sleeve.
3. The optical fiber draw furnace of claim 2, wherein the main body feed tube is disposed coaxially with the air inlet sleeve.
4. The optical fiber drawing furnace according to claim 1, wherein the first air inlet pipe is inserted and fixed to the barrel body in a direction perpendicular to an axis of the barrel body, and the first air inlet pipe faces the heat-insulating barrel.
5. The optical fiber drawing furnace according to claim 1, wherein one side of the heat-insulating cylinder with respect to the bottom plate is an opening side, the heating body is inserted into the heat-insulating cylinder from the opening side, and the feed port of the heat-insulating cylinder is located between the feed pipe joint and the heating body.
6. The optical fiber drawing furnace according to claim 4, wherein the heating body comprises: the heating body is used for forming the material rod insertion channel and the wire outlet channel, and the positive connecting arm and the negative connecting arm horizontally extend from the heating body to the cylinder wall direction of the cylinder body;
the positive pole linking arm with the negative pole linking arm exposes outside the heat preservation section of thick bamboo, and is located the heat preservation section of thick bamboo with between the bottom plate.
7. The optical fiber drawing furnace according to claim 6, wherein the positive electrode connecting arm and the negative electrode connecting arm are symmetrically arranged with respect to an axis of the heating body.
8. The optical fiber drawing furnace according to claim 6 or 7, further comprising:
the first electrode connecting arm is partially inserted into the cylinder along the direction vertical to the axis of the cylinder and is connected with the positive electrode connecting arm;
and the second electrode connecting arm is partially inserted into the barrel along the direction perpendicular to the axis of the barrel and is connected with the negative electrode connecting arm.
9. The optical fiber drawing furnace according to claim 8, wherein the first electrode connecting arm is provided with a first water inlet and a first water outlet, the first electrode connecting arm is further provided with a first water cooling channel therein, the first water cooling channel is a roundabout channel extending from the root of the first electrode connecting arm to the head of the first electrode connecting arm, one end of the first water cooling channel is communicated with the first water inlet, and the other end of the first water cooling channel is communicated with the first water outlet;
the second electrode connecting arm is provided with a second water inlet and a second water outlet, a second water-cooling channel is further arranged in the second electrode connecting arm, the second water-cooling channel is a roundabout channel extending from the root of the second electrode connecting arm to the head, one end of the second water-cooling channel is communicated with the second water inlet, and the other end of the second water-cooling channel is communicated with the second water outlet.
10. The optical fiber drawing furnace according to claim 9, wherein the first water inlet and the first water outlet are provided at a root of the first electrode connecting arm, and the second water inlet and the second water outlet are provided at a root of the second electrode connecting arm.
11. The optical fiber drawing furnace according to claim 1, wherein the top plate is provided with an upper water inlet and an upper water outlet, and an upper water cooling channel communicating the upper water inlet and the upper water outlet is arranged in the top plate;
the upper water inlet and the upper water outlet are respectively positioned on two sides of the top plate along the direction vertical to the axis of the cylinder body;
or the upper water inlet and the upper water outlet are respectively positioned on the same side of the top plate in the direction vertical to the axis of the cylinder body;
when the upper water inlet and the upper water outlet are respectively positioned on the same side of the top plate in the direction perpendicular to the axis of the cylinder, the upper water cooling channel is a circuitous channel arranged in the direction perpendicular to the axis of the cylinder.
12. The optical fiber drawing furnace according to claim 1, wherein the bottom plate is provided with a lower water inlet and a lower water outlet, and a lower water cooling channel communicating the lower water inlet and the lower water outlet is arranged in the bottom plate;
the lower water inlet and the lower water outlet are respectively positioned on two sides of the bottom plate along the direction vertical to the axis of the cylinder body;
or the lower water inlet and the lower water outlet are respectively positioned on the same side of the bottom plate in the direction vertical to the axis of the cylinder body;
when the lower water inlet and the lower water outlet are respectively positioned on the same side of the top plate in the direction perpendicular to the axis of the cylinder, the lower water cooling channel is a roundabout channel arranged in the direction perpendicular to the axis of the cylinder.
13. The optical fiber drawing furnace according to claim 1, wherein the barrel comprises: the cooling device comprises an outer cylinder and an inner cylinder which is coaxial with and opposite to the outer cylinder, wherein a cooling cavity is formed between the inner cylinder and the outer cylinder;
the outer barrel is provided with a water inlet end and a water outlet end, the water inlet end is arranged at the bottom of the outer barrel, and the water outlet end is arranged at the top of the outer barrel.
14. The optical fiber drawing furnace according to claim 13, wherein the water inlet end and the water outlet end are disposed on the same side of the outer cylinder or are disposed on opposite sides of the outer cylinder in a direction perpendicular to the axis of the cylinder.
15. The optical fiber drawing furnace according to claim 1, further comprising:
the insertion tube is partially inserted into the barrel along the direction perpendicular to the axial line of the barrel and is communicated with the barrel;
the infrared detector is provided with an infrared detection end; the infrared detection end is positioned in the insertion tube and used for detecting the temperature in the barrel through the insertion tube;
the insert pipe is provided with an air inlet, and the air inlet is communicated with the barrel through the insert pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010356504.2A CN111348826A (en) | 2020-04-29 | 2020-04-29 | Optical fiber drawing furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010356504.2A CN111348826A (en) | 2020-04-29 | 2020-04-29 | Optical fiber drawing furnace |
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| CN111348826A true CN111348826A (en) | 2020-06-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111675488A (en) * | 2020-08-03 | 2020-09-18 | 长飞光纤光缆(天津)有限公司 | Furnace gas sealing device for improving novel wire drawing furnace |
| WO2022121259A1 (en) * | 2020-12-07 | 2022-06-16 | 中天科技光纤有限公司 | Optical fiber and preparation method therefor |
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