CN111348826B - Optical fiber drawing furnace - Google Patents
Optical fiber drawing furnace Download PDFInfo
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- CN111348826B CN111348826B CN202010356504.2A CN202010356504A CN111348826B CN 111348826 B CN111348826 B CN 111348826B CN 202010356504 A CN202010356504 A CN 202010356504A CN 111348826 B CN111348826 B CN 111348826B
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- cylinder
- connecting arm
- electrode connecting
- water outlet
- optical fiber
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 39
- 238000012681 fiber drawing Methods 0.000 title claims abstract description 36
- 238000010438 heat treatment Methods 0.000 claims abstract description 60
- 238000004321 preservation Methods 0.000 claims abstract description 34
- 238000003780 insertion Methods 0.000 claims abstract description 22
- 230000037431 insertion Effects 0.000 claims abstract description 22
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 13
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 13
- 241001330002 Bambuseae Species 0.000 claims abstract description 13
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 13
- 239000011425 bamboo Substances 0.000 claims abstract description 13
- 230000001681 protective effect Effects 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000007599 discharging Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 185
- 238000001816 cooling Methods 0.000 claims description 57
- 238000001514 detection method Methods 0.000 claims description 6
- 238000005491 wire drawing Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 34
- 239000000110 cooling liquid Substances 0.000 description 13
- 239000002826 coolant Substances 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 2
- 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
- 238000009413 insulation Methods 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
- 230000000149 penetrating effect Effects 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
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
- 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
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 embodiment of the invention belongs to the field of optical fiber manufacturing, and particularly relates to an optical fiber drawing furnace which comprises: the 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 heat preservation section of thick bamboo, the feed inlet is seted up along the axis direction to the heat preservation section of thick bamboo, and the heating member forms material stick insertion passageway and play silk passageway along the axis direction, and optical fiber 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 cylinder body, the closed cylinder body top plate and the bottom plate of the storage heating body and the heat preservation cylinder are arranged on the top plate, the feeding pipe connector is further provided with an air inlet end for introducing protective gas, the discharging pipe connector is arranged on the bottom plate, the first air inlet pipe is arranged on the cylinder body, and the second air inlet pipe is arranged on the bottom plate. Compared with the prior art, the device has the advantages that external air is effectively prevented from entering the cylinder body from the feed pipe connector on the top plate and the discharge pipe connector on the bottom plate, so that the heat preservation cylinder 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 step in the process of manufacturing optical fibers, and the optical fiber drawing quality is greatly affected in the optical fiber drawing process, such as drawing furnace temperature, drawing speed, drawing tension, and cleanliness of drawing environment. 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-insulating materials and heating materials in the furnace. However, the existing mode is generally to simply introduce protective gas into the furnace body, and although the mode can protect the heat-insulating material and the heating material in the furnace body to a certain extent, air can enter the furnace body because the feed inlet and the wire drawing outlet of the furnace body are communicated with the outside, and the heating component and the heat-insulating component in the furnace can be damaged due to oxidation over time.
Disclosure of Invention
The embodiment of the invention aims to provide an optical fiber drawing furnace, which can effectively protect a heat preservation barrel and a heating furnace in the drawing furnace and avoid damage to the heat preservation barrel and a heating body caused by 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 coaxial setting of heat preservation section of thick bamboo, 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 feed inlet relative material stick insert the passageway, with the play silk passageway of material stick insert passageway intercommunication, optical fiber drawing furnace still includes:
A closed container comprising: a cylinder body for accommodating the heating body and the heat preservation cylinder, a top plate for closing the top opening of the cylinder body, and a bottom plate for closing the bottom opening of the cylinder body;
A feed pipe joint and a discharge pipe joint; the feeding pipe connector is arranged on the top plate and is coaxially arranged with the feeding port of the heat preservation cylinder, and the feeding pipe connector is also provided with an air inlet end for introducing protective gas; the discharging pipe joint is arranged on the bottom plate, is identical to the wire outlet channel and is coaxially arranged;
the first air inlet pipe is arranged on the cylinder body and is used for introducing protective gas into the cylinder body;
The second air inlet pipe is arranged on the bottom plate and used for introducing protective gas into the cylinder body.
Compared with the prior art, the wire drawing furnace comprises the closed container capable of containing 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 feeding pipe connector with the air inlet end is arranged on the top plate, meanwhile, the first air inlet pipe is arranged on the cylinder body, the second air inlet pipe is arranged on the bottom plate of the heating body, and in actual application, the air inlet ends of the first air inlet pipe, the second air inlet pipe and the feeding pipe connector are respectively connected with the gas protection device, protection gas is respectively conveyed to the feeding pipe connector, the inside of the cylinder body and the bottom of the cylinder body through the gas protection device, and the protection gas entering the cylinder body can be respectively discharged from the feeding pipe connector.
Further, the feed tube connector comprises:
the main body feeding pipe is penetrated through and fixed on the top plate; the main body feeding pipe is communicated with the cylinder body and is 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; and air holes are distributed on the main body feeding pipe and are communicated with the air cavity and 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.
Further, the first air inlet pipe penetrates through and is fixed on the cylinder body along the direction perpendicular to the axis of the cylinder body, and the first air inlet pipe faces the heat preservation cylinder.
Further, one side of the heat preservation cylinder, which is opposite to the bottom plate, is an opening side, the heating body is inserted into the heat preservation cylinder from the opening side, and the feeding hole of the heat preservation cylinder is positioned between the feeding pipe joint and the heating body.
Further, the heating body includes: the heating main body forms the material rod inserting channel and the wire outlet channel, and the positive electrode connecting arm and the negative electrode connecting arm horizontally extend from the heating main body to the cylinder wall direction of the cylinder body;
the positive electrode connecting arm and the negative electrode connecting arm are exposed out of the heat preservation cylinder and are positioned between the heat preservation cylinder and 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 includes:
A first electrode connecting arm partially inserted into the cylinder in a direction perpendicular to an axis of the cylinder and connected to the positive electrode connecting arm;
And the second electrode connecting arm is partially inserted into the cylinder body along the direction vertical to the axis of the cylinder body and is connected with the negative electrode connecting arm.
Further, the first electrode connecting arm is provided with a first water inlet and a first water outlet, a first water cooling channel is arranged in the first electrode connecting arm, the first water cooling channel is a detour channel extending from the root of the first electrode connecting arm to the head direction, 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 arranged in the second electrode connecting arm, the second water cooling channel is a detour channel extending from the root of the second electrode connecting arm to the direction of 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.
Further, the first water inlet and the first water outlet are arranged at the root of the first electrode connecting arm, and the second water inlet and the second water outlet are arranged at the root 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 which is 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 at two sides of the top plate along the direction vertical to the axis of the cylinder;
Or the upper water inlet and the upper water outlet are respectively positioned on the same side of the top plate along the direction vertical to the axis of the cylinder;
when the upper water inlet and the upper water outlet are respectively positioned on the same side of the top plate along the direction vertical to the axis of the cylinder, the upper water cooling channel is a roundabout channel which is arranged vertical 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 which is 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 at two sides of the bottom plate along the direction vertical to the axis of the cylinder;
Or the lower water inlet and the lower water outlet are respectively positioned on the same side of the bottom plate along the direction vertical to the axis of the cylinder;
when the lower water inlet and the lower water outlet are respectively positioned on the same side of the top plate along the direction vertical to the axis of the cylinder, the lower water cooling channel is a roundabout channel which is arranged vertical to the axis of the cylinder.
Further, the cylinder 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 cylinder is provided with a water inlet end and a water outlet end, the water inlet end is arranged at the bottom of the outer cylinder along the axial direction of the cylinder, and the water outlet end is arranged at the top of the outer cylinder.
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 includes:
An insertion tube partially inserted into the cylinder in a direction perpendicular to an axis of the cylinder and communicating with the cylinder;
The infrared detector is provided with an infrared detection end; the infrared detection end is positioned in the insertion tube and is used for detecting the temperature in the cylinder body through the insertion tube;
The air inlet is formed in the insertion pipe and is communicated with the cylinder body through the insertion 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 at A-A in FIG. 1;
FIG. 3 is a cross-sectional view at B-B in 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 at D-D in fig. 4.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be described in detail below with reference to the accompanying drawings. However, those of ordinary skill in the art will understand that in various embodiments of the present application, numerous technical details have been set forth in order to provide a better understanding of the present application. The technical solutions claimed in the claims of the present application can be realized without these technical details and 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, comprising: the heat-insulating cylinder 1 consists 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. Wherein, feed inlet 11 is offered along the axis direction to heat preservation section of thick bamboo 1, and heating member 2 forms the feed rod insertion passageway 21 that is opposite with feed inlet 11 along the axis direction, the play silk passageway 22 with feed rod insertion passageway 21 intercommunication.
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 feed pipe joint 4 arranged on the top plate 32, a discharge pipe joint 5 arranged on the bottom plate 33, a first air inlet pipe 6 arranged on the cylinder 31 and a second air inlet pipe 7 arranged on the bottom plate 33. Wherein, the feed pipe joint 4 is coaxially arranged 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 coaxially arranged.
Also, in the present embodiment, as shown in fig. 2 and 3, the feed pipe joint 4 is further provided with an inlet end 41 for introducing the shielding gas, the inlet end 41 being used for introducing the shielding gas into the feed pipe joint 4, and the first inlet pipe 6 and the second inlet pipe 7 are respectively used for introducing the shielding gas into the cylinder 31.
As can be seen from the above, in practical application, as shown in fig. 2 and 3, the first air inlet pipe 6, the second air inlet pipe 7 and the air inlet end 41 on the inlet pipe joint 4 can be respectively connected with a gas protection device, and the protection gas is respectively delivered to the inlet pipe joint 4, the inside of the cylinder 31 and the bottom of the cylinder 31 through the gas protection device, and the protection gas entering the cylinder 31 can be respectively discharged from the inlet pipe joint 4, so that the cylinder 31 can be always filled with the protection gas, and the outside air is effectively prevented from entering the inside of the cylinder 31 from the inlet pipe joint 4 on the top plate 32 and the discharge pipe joint 5 on the bottom plate 33, thereby effectively protecting the heat insulation cylinder 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 feed pipe 42 penetrating and fixed on the top plate 32, and an air inlet sleeve 43 sleeved on the main body feed pipe 42. Wherein the body feed tube 42 communicates with the bowl 31 and the air inlet sleeve 43 is spaced from the body feed tube 42 to form an air cavity 44. In addition, as shown in fig. 2 and 3, air holes 45 are also distributed on the main body feeding pipe 42, each air hole 45 communicates with the air chamber 44 and the main body feeding pipe 42, and the air inlet end 41 is provided on the air inlet sleeve 43. In practical application, as shown in fig. 2, the air inlet end 41 may be connected to a gas protection device, and the protection gas may be introduced into the main body feeding pipe 42 from the air cavity 44 through each air hole 45 via the air inlet end 41, and meanwhile, since the protection gas is generally inert gas, the protection gas entering the main body feeding pipe 42 may be directly discharged from the rod insertion 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, 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 be uniformly filled into the main body feeding pipe 42, thereby further reducing the possibility of the external air entering the cylinder 31.
Similarly, as shown in fig. 2 and 3, since the cylinder 31 and the bottom plate 33 are respectively provided with the first air inlet pipe 6 and the second air inlet pipe 7, and the first air inlet pipe 6 and the second air inlet pipe 7 are respectively connected with the gas protection device, the protection gas can be conveyed to the inside of the cylinder 31 by means of the first air inlet pipe 6 and the second air inlet pipe 7, so that the protection gas can be uniformly distributed in the whole cylinder 31, the phenomenon that the protection gas is discharged from the main body feed pipe 42 of the feed pipe joint 4 in advance due to lighter mass, and the bottom of the cylinder 31 is free from the protection gas filling phenomenon is effectively avoided, and therefore, the outside air is effectively prevented from entering the cylinder 31 from the discharge pipe joint 5, and the oxidization phenomenon caused to the heat preservation cylinder 1 and the heating body 2 is avoided.
However, in the present embodiment, as shown in fig. 2, the first air intake pipe 6 is inserted through and fixed to the cylinder 31 in the direction perpendicular to the axis of the cylinder 31, and the first air intake pipe 6 faces the heat insulating cylinder 1. Of course, as a preferred solution, the first air inlet pipe 6 may be provided in plurality and equally spaced around the axis of the cylinder 31. It can be seen from this that the protective gas is conveyed into the cylinder 31 through the plurality of first air inlet pipes 6, so that the protective gas 31 filled in the cylinder 31 is distributed more uniformly, 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 noted that, in the present embodiment, the heat-preserving container 1 is a carbon felt heat-preserving container, and, as shown in fig. 2 and 3, one side of the heat-preserving container 1 opposite to the bottom plate 33 is an open side (not labeled in the drawings), that is, the open side is located at the bottom of the heat-preserving container 1, the heating body 2 can be inserted into the heat-preserving container 1 from the open side at the bottom of the heat-preserving container 1, and the feeding opening 11 on the corresponding heat-preserving container 1 is opened at the top of the heat-preserving container 1, so that the feeding opening 11 of the heat-preserving container 1 is located between the feeding pipe connector 4 and the heating body 2. In order to realize the wire drawing process of the heating body 2 on the rod, as shown in fig. 1, the heating body 2 includes: a heating body 23 forming the rod insertion channel 21 and the wire outlet channel 22, and a positive electrode connecting arm 24 and a negative electrode connecting arm 25 extending horizontally from the heating body 23 to the cylinder wall direction of the cylinder 31. Meanwhile, the heating body 23 is inserted into the inside of the heat-insulating cylinder 1, while the positive electrode connecting arm 24 and the negative electrode connecting arm 25 are both exposed to the outside of the heat-insulating cylinder 1 and located between the heat-insulating cylinder 1 and the bottom plate 33, and the positive electrode connecting arm 24 and the negative electrode connecting arm 25 are symmetrically arranged with respect to the axis of the heating body 2. Therefore, in order to meet the heating requirement of the heating body 2 on the rod, as shown in fig. 1 and 2, the optical fiber drawing furnace of the present embodiment further includes: the first electrode connecting arm 8 and the second electrode connecting arm 9, the first electrode connecting arm 8 is partially inserted into the cylinder 31 along the axial direction vertical to the cylinder 31 and is connected with the positive electrode connecting arm 24, and the second electrode connecting arm 9 is partially inserted into the cylinder 31 along the axial direction vertical to the cylinder 31 and is connected with the negative electrode connecting arm 25, so that the positive electrode connecting arm 24 and the negative electrode connecting arm 25 of the heating body 2 can be respectively connected with a power supply through the first electrode connecting arm 8 and the second electrode connecting arm 9, the heating requirement of the heating body 23 on a material rod is realized, and the heating body 2 can be effectively supported and fixed by means of the first electrode connecting arm 8 and the second electrode connecting arm 9.
Further, as is clear from the above, since the heating body 2 is inserted into the heat-insulating cylinder 1 from the opening side of the bottom of the heat-insulating cylinder 1, the positive electrode connecting arm 24 and the negative electrode connecting arm 25 of the heating body 2 are positioned below the heat-insulating cylinder 1, and the positive electrode connecting arm 24 and the negative electrode connecting arm 25 of the heating body 2 can be directly protected by the protective gas supplied into the cylinder 31 through the second gas inlet pipe 7 provided on the bottom plate 33 of the cylinder 31.
In addition, as shown in fig. 3, the optical fiber drawing furnace of 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 axis of the cylinder 31 and communicates with the cylinder 31 of the airtight container 3, and the infrared 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 order to protect the infrared detector 20, the insertion tube 10 is provided with an air inlet 101, the air inlet 101 may be communicated with the cylinder 31 through the insertion tube 10, and in practical use, the air inlet 101 may be connected to a gas protection device, and a protective gas is supplied into the insertion tube 10 through the air inlet 101 by the gas protection device, thereby protecting the infrared detector 20.
A second embodiment of the present invention relates to an optical fiber drawing furnace, which is a further improvement on the first embodiment, and is mainly improved in that in the present embodiment, as shown in fig. 4, 5 and 6, a first water inlet 81 and a first water outlet 82 are provided on a first electrode connecting arm 8. Meanwhile, the first electrode connecting arm 8 is also provided with a first water cooling channel 83. The first water cooling passage 83 is a detour passage extending from the root of the first electrode connecting arm 8 toward the head, and one end of the first water cooling passage 83 communicates with the first water inlet 81, while the other end of the first water cooling passage 83 communicates with the first water outlet 82.
Correspondingly, as shown in fig. 5 and 6, the second electrode connecting arm 9 is provided with a second water inlet 91 and a second water outlet 92, and the second electrode connecting arm 9 is also provided with a second water cooling channel 93. The second water cooling channel 93 is a detour channel extending from the root of the second electrode connecting arm 9 toward the head, and one end of the second water cooling channel 93 is connected to the second water inlet 91, and the other end of the second water cooling channel 93 is connected to the second water outlet 92.
It can be seen from this that, in practical application, the first water inlet 81, the first water outlet 82 of the first electrode connecting arm 8 and the second water inlet 91, the second water outlet 92 of the second electrode connecting arm 9 can be connected with a cooling liquid circulation device, so that the cooling liquid circulation 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 simultaneously, the cooling liquid circulation device can also 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, thereby cooling the first electrode connecting arm 8 and the second electrode connecting arm 9, and realizing protection of the first electrode connecting arm 8 and the second electrode connecting arm 9.
In order to avoid damage to the closed vessel 3 due to heat generated when the heating body 2 heats the rod, the top plate 32, the bottom plate 33, and the cylinder 31 may be cooled by a coolant circulation device in the closed vessel 3 as shown in fig. 5 and 6.
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 an upper water cooling passage 323 communicating the upper water inlet 321 and the upper water outlet 322 is provided in the top plate 32. And, the upper water inlet 321 and the upper water outlet 322 are respectively located at 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 arranged on the top plate 32 by taking 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. Thus, in practical application, as shown in fig. 6, the upper water inlet 321 and the upper water outlet 322 may be connected with the cooling liquid circulation device, so that the cooling liquid circulation device may implement circulation and transportation of the cooling liquid 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 located on the same side of the top plate 32 along the direction perpendicular to the axis of the cylinder 31, and the corresponding upper water cooling channel 323 may be a detour channel disposed perpendicular to the axis of the cylinder 31, so that cooling of the top plate 32 may be achieved as well.
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 on the bottom plate 33, and an upper water cooling channel 333 is formed in the bottom plate 33 and is communicated with the lower water inlet 331 and the lower water outlet 332. 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. Namely, the lower water inlet 331 and the lower water outlet 332 are symmetrically arranged on the bottom plate 33 by taking the axis of the cylinder 31 as a symmetry axis, and one end of the corresponding lower water cooling channel 333 is communicated with the lower water inlet 331, and the other end is communicated with the lower water outlet 332. Thus, in practical application, as shown in fig. 6, the lower water inlet 331 and the lower water outlet 332 may be connected with a cooling liquid circulation device, so that the cooling liquid circulation device may implement circulation and transportation of the cooling liquid 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 implementing 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 axis of the cylinder 31, and the corresponding lower water cooling channel 333 may be a detour channel disposed perpendicular to the axis of the cylinder 31, so that cooling of the bottom plate 33 may be achieved as well.
In addition, in the present embodiment, as shown in fig. 5 and 6, the cylinder 31 includes: the outer cylinder 311, an inner cylinder 312 coaxial with and facing the outer cylinder 311, and a cooling chamber 313 formed between the inner cylinder 312 and the outer cylinder 311. Meanwhile, the outer cylinder 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 cylinder 31, specifically, the water inlet end 314 is disposed at the bottom of the outer cylinder 311, and the water outlet end 315 is disposed at the top of the outer cylinder 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, 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 always filled with the cooling medium, continuous cooling of the cylinder 31 is realized, the cylinder 31 is prevented from being influenced by high temperature generated by the heating body 2 during heating, 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, along the axial direction perpendicular to the barrel 31, the water inlet end 314 and the water outlet end 315 may be disposed on the same side of the outer barrel 311, or the water inlet end 314 and the water outlet end 315 may be disposed on two opposite sides of the outer barrel 311, so that the optical fiber drawing furnace has a wider use scenario.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples of 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.
Claims (14)
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 coaxial setting of heat preservation section of thick bamboo, 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 feed inlet relative material stick insert the passageway, with the play silk passageway of material stick insert passageway intercommunication, its characterized in that, optical fiber drawing furnace still includes:
A closed container comprising: a cylinder body for accommodating the heating body and the heat preservation cylinder, a top plate for closing the top opening of the cylinder body, and a bottom plate for closing the bottom opening of the cylinder body;
A feed pipe joint and a discharge pipe joint; the feeding pipe connector is arranged on the top plate and is coaxially arranged with the feeding port of the heat preservation cylinder, and the feeding pipe connector is also provided with an air inlet end for introducing protective gas; the discharging 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 body and is used for introducing protective gas into the cylinder body;
The second air inlet pipe is arranged on the bottom plate and used for introducing protective gas into the cylinder;
The feed pipe joint includes:
the main body feeding pipe is penetrated through and fixed on the top plate; the main body feeding pipe is communicated with the cylinder body and is 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; and air holes are distributed on the main body feeding pipe and are communicated with the air cavity and the main body feeding pipe, and the air inlet end is arranged on the air inlet sleeve.
2. An optical fiber drawing furnace according to claim 1 wherein the body feed tube is coaxially disposed with the air inlet sleeve.
3. The optical fiber drawing furnace according to claim 1, wherein the first air inlet pipe is penetrated and fixed on the cylinder body along the direction perpendicular to the axis of the cylinder body, and the first air inlet pipe is opposite to the heat preservation cylinder.
4. An optical fiber drawing furnace according to claim 1, wherein a side of the heat-retaining cylinder opposite to the bottom plate is an open side, the heating body is inserted into the heat-retaining cylinder from the open side, and the feed port of the heat-retaining cylinder is located between the feed pipe joint and the heating body.
5. An optical fiber drawing furnace according to claim 3, wherein the heating body comprises: the heating main body forms the material rod inserting channel and the wire outlet channel, and the positive electrode connecting arm and the negative electrode connecting arm horizontally extend from the heating main body to the cylinder wall direction of the cylinder body;
the positive electrode connecting arm and the negative electrode connecting arm are exposed out of the heat preservation cylinder and are positioned between the heat preservation cylinder and the bottom plate.
6. The optical fiber drawing furnace according to claim 5, wherein the positive electrode connecting arm and the negative electrode connecting arm are symmetrically arranged with respect to an axis of the heating body.
7. The optical fiber drawing furnace according to claim 5 or 6, further comprising:
A first electrode connecting arm partially inserted into the cylinder in a direction perpendicular to an axis of the cylinder and connected to the positive electrode connecting arm;
And the second electrode connecting arm is partially inserted into the cylinder body along the direction vertical to the axis of the cylinder body and is connected with the negative electrode connecting arm.
8. The optical fiber drawing furnace according to claim 7, wherein the first electrode connecting arm is provided with a first water inlet and a first water outlet, the first electrode connecting arm is internally provided with a first water cooling channel, the first water cooling channel is a detour channel extending from the root of the first electrode connecting arm to the direction of the head, 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 arranged in the second electrode connecting arm, the second water cooling channel is a detour channel extending from the root of the second electrode connecting arm to the direction of 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.
9. The fiber drawing furnace of claim 8, wherein the first water inlet and the first water outlet are disposed at a root of the first electrode connecting arm, and the second water inlet and the second water outlet are disposed at a root of the second electrode connecting arm.
10. The optical fiber drawing furnace according to claim 1, wherein an upper water inlet and an upper water outlet are formed in the top plate, and an upper water cooling channel which is 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 at two sides of the top plate along the direction vertical to the axis of the cylinder;
Or the upper water inlet and the upper water outlet are respectively positioned on the same side of the top plate along the direction vertical to the axis of the cylinder;
when the upper water inlet and the upper water outlet are respectively positioned on the same side of the top plate along the direction vertical to the axis of the cylinder, the upper water cooling channel is a roundabout channel which is arranged vertical to the axis of the cylinder.
11. The optical fiber drawing furnace according to claim 1, wherein a lower water inlet and a lower water outlet are formed in the bottom plate, and a lower water cooling channel which is 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 at two sides of the bottom plate along the direction vertical to the axis of the cylinder;
Or the lower water inlet and the lower water outlet are respectively positioned on the same side of the bottom plate along the direction vertical to the axis of the cylinder;
when the lower water inlet and the lower water outlet are respectively positioned on the same side of the top plate along the direction vertical to the axis of the cylinder, the lower water cooling channel is a roundabout channel which is arranged vertical to the axis of the cylinder.
12. The optical fiber drawing furnace of 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 cylinder is provided with a water inlet end and a water outlet end, the water inlet end is arranged at the bottom of the outer cylinder along the axial direction of the cylinder, and the water outlet end is arranged at the top of the outer cylinder.
13. The optical fiber drawing furnace according to claim 12, wherein the water inlet end and the water outlet end are disposed on the same side of the outer tube or on opposite sides of the outer tube in a direction perpendicular to the axis of the tube.
14. The optical fiber drawing furnace of claim 1, further comprising:
An insertion tube partially inserted into the cylinder in a direction perpendicular to an axis of the cylinder and communicating with the cylinder;
The infrared detector is provided with an infrared detection end; the infrared detection end is positioned in the insertion tube and is used for detecting the temperature in the cylinder body through the insertion tube;
The air inlet is formed in the insertion pipe and is communicated with the cylinder body through the insertion pipe.
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| CN111675488B (en) * | 2020-08-03 | 2024-03-22 | 长飞光纤光缆(天津)有限公司 | Reform transform new-type wire drawing stove gas seal and put |
| CN112499961A (en) * | 2020-12-07 | 2021-03-16 | 中天科技光纤有限公司 | Optical fiber and method for producing the same |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1148033A (en) * | 1995-07-05 | 1997-04-23 | 住友电气工业株式会社 | Optical fiber drawing furnace |
| CN1665749A (en) * | 2002-04-30 | 2005-09-07 | 康宁股份有限公司 | Methods and apparatus for thermal treatment of a glass optical fiber during drawing |
| JP2006131427A (en) * | 2004-11-02 | 2006-05-25 | Sumitomo Electric Ind Ltd | Method for manufacturing optical fiber |
| JP2012056815A (en) * | 2010-09-10 | 2012-03-22 | Sumitomo Electric Ind Ltd | Wire drawing furnace |
| CN205529177U (en) * | 2016-04-19 | 2016-08-31 | 郑州四维特种材料有限责任公司 | Graphitization equipment |
| CN106746592A (en) * | 2016-12-16 | 2017-05-31 | 青海中利光纤技术有限公司 | The water-cooling air-sealing device of fibre drawing furnace |
| CN107235625A (en) * | 2017-05-05 | 2017-10-10 | 浙江联飞光纤光缆有限公司 | A kind of prefabricated rods attemperator for fibre drawing furnace |
| CN108383375A (en) * | 2018-02-12 | 2018-08-10 | 江苏富春江光电有限公司 | Drawing optical fibers annealing device and optical fiber |
| CN208517278U (en) * | 2018-06-13 | 2019-02-19 | 杭州富通通信技术股份有限公司 | A kind of fiber drawing furnace and its sealing device |
| JP2019026524A (en) * | 2017-08-01 | 2019-02-21 | 株式会社フジクラ | Manufacturing method and cap |
| CN209051856U (en) * | 2018-09-30 | 2019-07-02 | 惠州市金世纪铝业有限公司 | A kind of aluminum shot sealed thermostat device that heat resistant fire-proof is high |
| CN212335023U (en) * | 2020-04-29 | 2021-01-12 | 上海煜志科技有限公司 | Optical fiber drawing furnace |
| CN112441604A (en) * | 2019-08-28 | 2021-03-05 | 多氟多化工股份有限公司 | Method for preparing high-purity fluoride |
-
2020
- 2020-04-29 CN CN202010356504.2A patent/CN111348826B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1148033A (en) * | 1995-07-05 | 1997-04-23 | 住友电气工业株式会社 | Optical fiber drawing furnace |
| CN1665749A (en) * | 2002-04-30 | 2005-09-07 | 康宁股份有限公司 | Methods and apparatus for thermal treatment of a glass optical fiber during drawing |
| CN1733635A (en) * | 2002-04-30 | 2006-02-15 | 康宁股份有限公司 | Methods for forming optical fiber |
| JP2006131427A (en) * | 2004-11-02 | 2006-05-25 | Sumitomo Electric Ind Ltd | Method for manufacturing optical fiber |
| JP2012056815A (en) * | 2010-09-10 | 2012-03-22 | Sumitomo Electric Ind Ltd | Wire drawing furnace |
| CN205529177U (en) * | 2016-04-19 | 2016-08-31 | 郑州四维特种材料有限责任公司 | Graphitization equipment |
| CN106746592A (en) * | 2016-12-16 | 2017-05-31 | 青海中利光纤技术有限公司 | The water-cooling air-sealing device of fibre drawing furnace |
| CN107235625A (en) * | 2017-05-05 | 2017-10-10 | 浙江联飞光纤光缆有限公司 | A kind of prefabricated rods attemperator for fibre drawing furnace |
| JP2019026524A (en) * | 2017-08-01 | 2019-02-21 | 株式会社フジクラ | Manufacturing method and cap |
| CN108383375A (en) * | 2018-02-12 | 2018-08-10 | 江苏富春江光电有限公司 | Drawing optical fibers annealing device and optical fiber |
| CN208517278U (en) * | 2018-06-13 | 2019-02-19 | 杭州富通通信技术股份有限公司 | A kind of fiber drawing furnace and its sealing device |
| CN209051856U (en) * | 2018-09-30 | 2019-07-02 | 惠州市金世纪铝业有限公司 | A kind of aluminum shot sealed thermostat device that heat resistant fire-proof is high |
| CN112441604A (en) * | 2019-08-28 | 2021-03-05 | 多氟多化工股份有限公司 | Method for preparing high-purity fluoride |
| CN212335023U (en) * | 2020-04-29 | 2021-01-12 | 上海煜志科技有限公司 | Optical fiber drawing furnace |
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