CN221680969U - Annealing device of optical fiber drawing induction furnace - Google Patents
Annealing device of optical fiber drawing induction furnace Download PDFInfo
- Publication number
- CN221680969U CN221680969U CN202323584458.XU CN202323584458U CN221680969U CN 221680969 U CN221680969 U CN 221680969U CN 202323584458 U CN202323584458 U CN 202323584458U CN 221680969 U CN221680969 U CN 221680969U
- Authority
- CN
- China
- Prior art keywords
- temperature
- temperature control
- optical fiber
- annealing
- fiber drawing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000137 annealing Methods 0.000 title claims abstract description 53
- 239000013307 optical fiber Substances 0.000 title claims abstract description 27
- 238000012681 fiber drawing Methods 0.000 title claims abstract description 22
- 230000006698 induction Effects 0.000 title claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 50
- 229910052751 metal Inorganic materials 0.000 claims abstract description 32
- 239000002184 metal Substances 0.000 claims abstract description 32
- 238000009413 insulation Methods 0.000 claims abstract description 28
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 230000000712 assembly Effects 0.000 claims description 10
- 238000000429 assembly Methods 0.000 claims description 10
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 4
- 229910001000 nickel titanium Inorganic materials 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 11
- 230000001105 regulatory effect Effects 0.000 abstract description 6
- 230000009970 fire resistant effect Effects 0.000 abstract 2
- 238000001816 cooling Methods 0.000 description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 229910002804 graphite Inorganic materials 0.000 description 8
- 239000010439 graphite Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 239000011521 glass Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 238000009529 body temperature measurement Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000010453 quartz Substances 0.000 description 3
- 229910052703 rhodium Inorganic materials 0.000 description 3
- 239000010948 rhodium Substances 0.000 description 3
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229910018967 Pt—Rh Inorganic materials 0.000 description 1
- 229910000629 Rh alloy Inorganic materials 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- PXXKQOPKNFECSZ-UHFFFAOYSA-N platinum rhodium Chemical compound [Rh].[Pt] PXXKQOPKNFECSZ-UHFFFAOYSA-N 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Landscapes
- Furnace Details (AREA)
Abstract
The application relates to an annealing device of an optical fiber drawing induction furnace, which is characterized in that a heat insulation layer, a temperature control assembly, a heating assembly, a fire-resistant layer and a detection assembly are sequentially arranged in a metal tube body to realize stepped temperature control in a matched manner, the heat insulation layer can be used for effectively slowing down the temperature loss in the metal tube body, the heat insulation effect is improved, the fire-resistant layer is used for forming an annealing cavity, the high temperature resistance of the annealing cavity is enhanced, the influence on the optical fiber drawing performance is avoided, and meanwhile, the temperature control assembly and the heating assembly are regulated and controlled in real time according to the temperature of each temperature step detected by the detection assembly through the control assembly, so that each temperature step is accurately controlled to be kept in a proper temperature range, and the overlarge difference of the temperature difference of different temperature steps or the temperature of each step tends to be balanced are avoided.
Description
Technical Field
The utility model relates to an annealing device of an optical fiber drawing induction furnace, and belongs to the field of quartz optical fiber manufacturing.
Background
During the fiber drawing process, the fiber is subjected to a cooling process, also known as an annealing process, after reaching a diameter of 125um, during which the SiO2 atoms undergo a structural reshaping process, which is carried out at a temperature of between 1600 and 1100 ℃.
Therefore, in the prior art, this process can be performed in an annealing furnace with a stepped control temperature, as disclosed in chinese patent 201811353114.9, an optical fiber drawing annealing device is disclosed, which can process an optical fiber preform, the optical fiber drawing annealing device comprises a graphite drawing furnace, a buffer tube arranged at the upper end of the graphite drawing furnace and an annealing furnace arranged at the lower end of the graphite drawing furnace, a sealing member is arranged at the upper end of the buffer tube, a formed graphite tube is arranged in the graphite drawing furnace, a glass guiding tube is arranged in the annealing furnace, and a graphite connecting tube for connecting the formed graphite tube and the glass guiding tube is also arranged in the graphite drawing furnace. The spiral heating wire is arranged in the annealing furnace, the pitch of the heating wire is linearly increased from top to bottom, the heating power of the heating wire can be adjusted, and the expected temperature gradient in the annealing pipe can be obtained according to the feedback of the temperature thermocouple so as to guide the annealing speed and the cooling gradient in the furnace after the optical fiber is formed. Although it realizes temperature steps, it is difficult to precisely control the temperature of each temperature step, and thus, after a short time, the temperature of each temperature step gradually tends to be balanced, thereby affecting the annealing effect of the optical fiber. Moreover, since each temperature step cannot be continuously controlled within a certain temperature range, the temperature differences in adjacent temperature steps will vary, and once the temperature differences are too large, the annealing effect of the optical fiber will be reduced as well.
In addition, the existing induction furnace annealing technology is an annealing device assembled by an annealing tube and a quartz glass tube inner container (a glass guide tube adopted in China patent 201811353114.9), wherein the inner glass inner container is used for guaranteeing the inner cleanliness and is convenient for staff to clean. At present, on one hand, the quartz inner container is easy to break, so that the production process cost is high, on the other hand, staff needs to take out the quartz inner container for cleaning after drawing wire each time, the operation is inconvenient, and meanwhile, the broken Dan Yingna inner container also easily causes safety risks such as personnel scratch and the like.
Disclosure of utility model
The utility model aims to provide an annealing device of an optical fiber drawing induction furnace, which realizes the control of the ladder temperature and the continuous control of the ladder temperature.
In order to achieve the above purpose, the present utility model provides the following technical solutions: an annealing apparatus of an optical fiber drawing induction furnace, the annealing apparatus comprising:
A metal tube body;
the heat insulation layer is arranged on the inner wall of the metal pipe body;
The heating assemblies are arranged on the inner wall of the heat insulation layer, and are sequentially arranged along the length direction of the metal pipe body;
The temperature control assemblies are arranged in the heat insulation layer and are arranged one-to-one with the heating assemblies along the length direction of the metal pipe body;
The refractory layer is arranged on the inner side of the heat insulation layer to form an annealing cavity;
The plurality of groups of detection pieces are arranged on the inner wall of the refractory layer and are arranged one-to-one with the plurality of heating assemblies along the length direction of the metal pipe body;
The control component is respectively connected with the detection piece, the heating component and the temperature control component in a signal way, and controls the heating component and the temperature control component according to the temperature detected by the detection piece so as to enable the temperature in the annealing cavity to be in step distribution.
Further, the heat insulation layer is ceramic fiber.
Further, the metal pipe body is any one of stainless steel, aluminum alloy, nickel alloy or titanium alloy.
Further, the refractory layer is a C/C composite material.
Further, the heating component is a resistance heating wire, the resistance heating wire is configured into two parts which are independently controlled, and the two parts of the resistance heating wire are symmetrically arranged along the height direction.
Further, the temperature control assembly comprises a temperature control source and a temperature control pipeline arranged in the heat insulation layer, and the temperature control pipeline is arranged along the length direction of the metal pipe body and corresponds to the heating assembly.
Further, the temperature control source includes a plurality of temperature control elements Wen Ziyuan configured with temperature control media having different temperatures, and each temperature control pipeline is connected to a plurality of the temperature controls Wen Ziyuan respectively.
Further, the temperature control medium is any one of steam, nitrogen or argon.
The utility model has the beneficial effects that: according to the utility model, the heat insulation layer, the temperature control component, the heating component, the refractory layer and the detection piece are sequentially arranged in the metal tube body to realize the step temperature control in a matched manner, the heat insulation layer can be utilized to effectively slow down the temperature loss in the metal tube body, the heat insulation effect is improved, the refractory layer is utilized to form the annealing cavity, the high temperature resistance of the annealing cavity is enhanced, the influence on the fiber drawing performance is avoided, and meanwhile, the temperature control component and the heating component are regulated and controlled in real time according to the temperature of each temperature step detected by the detection piece by the control component, so that each temperature step is accurately controlled to be kept in a proper temperature range, and the overlarge difference of the temperature difference of different temperature steps or the temperature of each step tends to be balanced are avoided.
The foregoing description is only an overview of the present utility model, and is intended to provide a better understanding of the present utility model, as it is embodied in the following description, with reference to the preferred embodiments of the present utility model and the accompanying drawings.
Drawings
Fig. 1 is a schematic structural view of an annealing device of an optical fiber drawing induction furnace according to the present application.
Fig. 2 is a schematic structural view of the sectional view of fig. 1.
Detailed Description
The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1 to 2, the annealing device of an optical fiber drawing induction furnace according to the present application has one end connected to the drawing induction furnace and the other end assembled with an iris opening for assisting in annealing an optical fiber, and comprises a metal tube 1, a heat insulation layer 3, a heating assembly 5, a temperature control assembly 4, a refractory layer 6 and a detection piece.
The metal pipe body 1 is any one of stainless steel, aluminum alloy, nickel alloy or titanium alloy. In this embodiment, the metal tube 1 is a cylindrical cylinder made of stainless steel and having a length of 1540MM, and flanges 2 are provided at both ends thereof for assembling with a wire drawing induction furnace and an iris opening. The stainless steel has good corrosion resistance and can resist the corrosion of most chemical media, so that the annealing pipe has longer service life in a corrosive environment, has good heat resistance and can keep stable performance in a high-temperature environment. The annealing tube made of aluminum alloy, nickel alloy or titanium alloy has similar advantages, but of course, the annealing tube can also be other high-temperature-resistant and corrosion-resistant metals, and is not limited in detail herein.
The insulating layer 3 is disposed on the inner wall of the metal tube body 1, in this embodiment, the insulating layer 3 is ceramic fiber, and the ceramic fiber is formed on the inner wall of the metal tube body 1 in a cylindrical shape, and because the ceramic material has a lower thermal conductivity, the ceramic fiber can be relatively fast when absorbing heat, but can be relatively slow when releasing heat, so that the heat preservation effect of the annealing device can be effectively improved, heat conduction and dissipation can be reduced, and meanwhile, the slower heat dissipation speed of the ceramic fiber can also effectively reduce heat dissipation, and the surrounding environment is protected from being affected by overheat. Therefore, the heat insulating layer 3 may be made of other refractory materials with low heat conductivity, and is not particularly limited, so long as the heat insulating effect of the annealing device is improved by using the characteristics that the heat is absorbed relatively quickly and released relatively slowly, thereby reducing the conduction and dissipation of the heat to the external environment.
A plurality of heating components 5 are arranged on the inner wall of the heat insulation layer 3, and the heating components 5 are sequentially arranged along the length direction of the metal pipe body 1. In this embodiment, the heating elements 5 are provided with 6 groups, corresponding to 1600 ℃, 1500 ℃, 1400 ℃, 1300 ℃, 1200 ℃, 1100 ℃, respectively, and the heating elements 5 are resistance heating wires. The resistance heating wires are configured into two parts which are independently controlled due to the temperature difference along the height direction caused by the upward movement of the hot air, and the two parts of resistance heating wires are symmetrically arranged along the height direction, so that the temperature of each position in a temperature step formed by the same heating assembly 5 is more uniform by respectively controlling the heating temperature of the two parts of resistance heating wires, and particularly, the control temperature uniformity can be realized by controlling the heating temperature of the resistance heating wires positioned below to be lower than the heating temperature positioned above.
The temperature control components 4 are arranged in the heat insulation layer 3 and are arranged one to one with the heating components 5 along the length direction of the metal pipe body 1. In this embodiment, the temperature control assembly 4 is also provided with 6 groups, and the 6 groups of temperature control assemblies 4 and 6 groups of heating assemblies 5 are arranged one to one, so that when the temperature is too high or the temperature difference between the temperature control assembly and the corresponding temperature step is too large, the temperature control assembly 4 absorbs the heat at the heat insulation layer 3 to realize cooling of the temperature step, and therefore, for faster cooling, the temperature control assembly 4 can be arranged at one side of the heat insulation layer 3 close to the heating assembly 5.
The temperature control assembly 4 comprises a temperature control source and a temperature control pipeline arranged in the heat insulation layer 3, and the temperature control pipeline is correspondingly arranged with the heating assembly 5 along the length direction of the metal pipe body 1. Specifically, the temperature control pipeline surrounds the heat insulation layer 3, and the temperature control medium is driven to flow in the temperature control pipeline by the temperature control source so as to realize heat exchange, thereby reducing the temperature at the corresponding temperature step and achieving the purpose of temperature control.
The temperature control source comprises a plurality of temperature control Wen Ziyuan which are provided with temperature control mediums with different temperatures, and each temperature control pipeline is respectively connected with a plurality of temperature control Wen Ziyuan. That is, each temperature control source is composed of a plurality of temperature controls Wen Ziyuan, the temperature of the temperature control medium in each temperature control Wen Ziyuan is different, and each temperature control pipeline is respectively connected with a plurality of temperature controls Wen Ziyuan, so that when the temperature is regulated, the temperature is regulated and controlled, the proper temperature control medium is selected according to the temperature difference value required to be regulated and controlled, and the aim of quick temperature control is achieved. Specifically, each temperature control source comprises a storage tank, a cooling tower, a cooling pump, a cooling pipeline and the like, wherein the storage tank is used for storing temperature control media, the cooling tower is used for cooling the temperature control media after temperature rise to a required temperature, the cooling pipeline is used for connecting the storage tank, the cooling tower, the cooling pump and the temperature control pipeline and forming a circulating temperature control system, and the cooling pump is used for driving the temperature control media to flow among the storage tank, the cooling tower and the temperature control pipeline, so that the temperature control effect on the annealing pipe is realized. In addition, the temperature control assembly 4 further comprises a control unit, the cooling pipeline is connected with the temperature control pipelines through electromagnetic valves, the electromagnetic valves are connected with the control unit in a signal mode, and the control unit controls the electromagnetic valves to be opened or closed so that temperature control media in the storage tank can flow into each temperature control pipeline.
The temperature control medium is any one of steam, nitrogen or argon. In this embodiment, the temperature control medium is argon, which can provide a certain degree of cooling effect at high temperature, so as to achieve the effect of adjusting temperature.
The refractory layer 6 is arranged on the inner side of the heat insulating layer to form an annealing chamber, and the refractory layer 6 is specifically a C/C composite material. The C/C composite material has excellent high temperature resistance, can keep stable performance at high temperature, is suitable for high-temperature working environment, has good corrosion resistance, can resist corrosion of chemical medium, can avoid chemical reaction with optical fiber at high temperature, and influences annealing effect of the optical fiber.
The detection pieces are arranged on the inner wall of the refractory layer 6 and are arranged one to one with the heating components 5 along the length direction of the metal pipe body 1. In this embodiment, the detecting member is a thermocouple sensor, which is provided with 6 groups and also corresponds to the heating element 5, and specifically, the thermocouple sensor includes a detecting end and a leading-out end, and the thermocouple sensor is generally composed of two different metal wires or alloy wires, and these two wires are connected together to form a thermocouple welding spot, which is called a detecting end. In addition, the other end of the thermocouple needs to be connected to a measuring instrument for temperature measurement, namely a so-called leading-out end, wherein the detection end of the thermocouple sensor is embedded into the inner wall of the refractory layer 6, and the leading-out end passes through the refractory layer 6, the heat insulation layer 3 and the metal tube body 1 and is externally connected to the measuring instrument so as to realize real-time measurement of each temperature step in the annealing device.
The common material selection of the detection end is platinum-rhodium alloy, which is a material with better high temperature resistance, oxidation resistance and chemical stability, and is widely applied to the field of high temperature measurement, specifically, the Pt-Rh alloy can be divided into a plurality of different types according to the difference of rhodium content, and the common materials are Pt-Rh10 (the rhodium content is about 10%) and Pt-Rh30 (the rhodium content is about 30%). These alloys have excellent thermoelectric properties and a high melting point and are suitable for accurate temperature measurements in high temperature environments.
The control component is respectively connected with the detecting piece, the heating component 5 and the temperature control component 4 in a signal way, and controls the heating component 5 and the temperature control component 4 according to the temperature detected by the detecting piece 7 so as to enable the temperature in the annealing cavity to be distributed in a step mode.
It should be appreciated that in embodiments of the present application, the control component may be a central processing unit, but may also be other general purpose processors, digital signal processors, application specific integrated circuits, off-the-shelf programmable gate arrays or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. The control component may also employ a general-purpose microprocessor or one or more integrated circuits for executing associated programs to perform the functions required by embodiments of the application. The control component may also be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the present application may be performed by integrated logic circuitry in hardware or instructions in software in a control component. Is conventional and will not be described in detail herein.
According to the application, the heat insulation layer 3, the temperature control component 4, the heating component 5, the refractory layer 6 and the detection component 7 are sequentially arranged in the metal pipe body 1 to realize stepped temperature control in a matched manner, the heat insulation layer 3 can effectively slow down the temperature loss in the metal pipe body 1, the heat insulation effect is improved, the refractory layer 6 is utilized to form an annealing cavity, the high temperature resistance of the annealing cavity is enhanced, the influence on the fiber drawing performance is avoided, meanwhile, the temperature control component 4 and the heating component 5 are regulated and controlled in real time according to the temperature of each temperature step detected by the detection component 7, so that each temperature step is accurately controlled to be kept in a proper temperature range, and the overlarge difference of temperature differences of different temperature steps or the temperature of each step tends to be balanced are avoided.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (8)
1. An annealing device of an optical fiber drawing induction furnace, characterized in that the annealing device comprises:
A metal tube body;
the heat insulation layer is arranged on the inner wall of the metal pipe body;
The heating assemblies are arranged on the inner wall of the heat insulation layer, and are sequentially arranged along the length direction of the metal pipe body;
The temperature control assemblies are arranged in the heat insulation layer and are arranged one-to-one with the heating assemblies along the length direction of the metal pipe body;
The refractory layer is arranged on the inner side of the heat insulation layer to form an annealing cavity;
The plurality of groups of detection pieces are arranged on the inner wall of the refractory layer and are arranged one-to-one with the plurality of heating assemblies along the length direction of the metal pipe body;
The control component is respectively connected with the detection piece, the heating component and the temperature control component in a signal way, and controls the heating component and the temperature control component according to the temperature detected by the detection piece so as to enable the temperature in the annealing cavity to be in step distribution.
2. The annealing apparatus of an optical fiber drawing induction furnace according to claim 1, wherein said insulating layer is ceramic fiber.
3. The annealing device of an optical fiber drawing induction furnace according to claim 1, wherein the metal tube body is any one of stainless steel, aluminum alloy, nickel alloy or titanium alloy.
4. An annealing apparatus of an optical fiber drawing induction furnace according to claim 1, wherein said refractory layer is a C/C composite material.
5. The annealing apparatus of an optical fiber drawing induction furnace according to claim 1, wherein the heating assembly is a resistance heating wire configured as two parts independently controlled, the two parts being symmetrically arranged in a height direction.
6. The annealing device of an optical fiber drawing induction furnace according to claim 1, wherein the temperature control assembly comprises a temperature control source and a temperature control pipeline arranged in the heat insulation layer, and the temperature control pipeline is arranged corresponding to the heating assembly along the length direction of the metal pipe body.
7. The annealing apparatus of an optical fiber drawing induction furnace according to claim 6, wherein said temperature control source comprises a plurality of temperature control elements Wen Ziyuan configured with temperature control media having different temperatures, each of said temperature control lines being respectively connected to a plurality of said temperature controls Wen Ziyuan.
8. The annealing apparatus of an optical fiber drawing induction furnace according to claim 7, wherein the temperature control medium is any one of steam, nitrogen and argon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323584458.XU CN221680969U (en) | 2023-12-27 | 2023-12-27 | Annealing device of optical fiber drawing induction furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323584458.XU CN221680969U (en) | 2023-12-27 | 2023-12-27 | Annealing device of optical fiber drawing induction furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221680969U true CN221680969U (en) | 2024-09-10 |
Family
ID=92615907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323584458.XU Active CN221680969U (en) | 2023-12-27 | 2023-12-27 | Annealing device of optical fiber drawing induction furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221680969U (en) |
-
2023
- 2023-12-27 CN CN202323584458.XU patent/CN221680969U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212334992U (en) | Cover plate glass channel cooling section structure | |
| CN207764148U (en) | Material contact thermo-resistance measurement platform under a kind of vacuum condition | |
| CN1116593C (en) | Method for continuous measuring molten steel temperature and temp. measuring tube | |
| CN106186663A (en) | A kind of novel optical fiber fiber drawing furnace | |
| CN102803928B (en) | Heatable Flow-through Measuring Cell | |
| CN221680969U (en) | Annealing device of optical fiber drawing induction furnace | |
| WO2021189818A1 (en) | Temperature measurement device for flowing working medium in micro-channel and calculation method for thickness of thermal insulation layer | |
| CN213578759U (en) | Heating furnace body with water-cooling jacket sleeve | |
| CN117534304A (en) | Annealing device of optical fiber drawing induction furnace | |
| CN112066353A (en) | Device and method for monitoring wall temperature of heat exchange tube in furnace by adopting compressed air cooling protection | |
| CN202403825U (en) | Novel forging furnace temperature measuring device | |
| CN104133505A (en) | Temperature control device for refining metal solidification structure by use of pulse current | |
| CN112941616A (en) | Water-cooling screen and monocrystalline silicon growth furnace | |
| CN212273956U (en) | Device for monitoring wall temperature of heat exchange tube in furnace by adopting compressed air cooling protection | |
| CN206920025U (en) | A kind of device of on-line real time monitoring molten steel temperature | |
| CN214066364U (en) | Infrared thermometer structure of galvanizing line annealing furnace | |
| US3278341A (en) | Thermocouple device for measuring the temperature of molten metal | |
| CN110173715A (en) | Boiler water cooling equipment and temperature measurement component assembly method | |
| CN110136851B (en) | Heater for nuclear reactor and nuclear reactor | |
| CN113163528A (en) | Gas electric heater capable of being heated at high temperature and preparation method thereof | |
| CN217083352U (en) | Sealing and heat insulating structure of tube type heating furnace tube | |
| CN109444343B (en) | Nitriding heat treatment furnace gas taking system and nitriding heat treatment furnace gas taking method | |
| CN113932936B (en) | Temperature measuring device and glass substrate production method | |
| CN204065872U (en) | A kind of temperature control equipment for pulse current thinning metal solidification texture | |
| CN107794352A (en) | A kind of small-sized cutter quenching heating furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |