Temperature regulation method and device of optical fiber drawing furnace, electronic equipment and storage medium

Abstract

This application provides a temperature control method, apparatus, electronic device, and storage medium for an optical fiber drawing furnace, relating to the field of optical fiber manufacturing technology. The method includes: acquiring the temperature of multiple heating zones within the optical fiber drawing furnace; wherein each heating zone is heated by a magnetic field generated by a coil corresponding to that heating zone; determining the temperature state of each heating zone based on its individual temperatures; the temperature state being any one of a low-temperature state, a normal state, or a high-temperature state; and, for each heating zone, adjusting its temperature based on whether the temperature state is low or high, to obtain a target temperature for that heating zone. This application's solution improves the uniformity of temperature distribution within the optical fiber drawing furnace.

Description

Technical Field

[0001] This application relates to the field of optical fiber manufacturing technology, and in particular to a method, apparatus, electronic device and storage medium for temperature regulation of an optical fiber drawing furnace. Background Technology

[0002] An optical fiber drawing furnace is a device used to draw optical fiber preforms into optical fibers. During the process of drawing optical fibers using this furnace, it is necessary to control the temperature inside the furnace.

[0003] In related technologies, the temperature inside an optical fiber drawing furnace can be controlled by coil heating. Specifically, the coil is spirally wound around the furnace body. When energized, the coil heats the interior of the furnace through electromagnetic induction. The temperature control module of the optical fiber drawing furnace can control the temperature inside the furnace by adjusting the power of the coil.

[0004] However, since the coil is spirally wound around the inside of the fiber drawing furnace, the magnetic field density in the center of the coil is relatively high after the coil is energized, which means that the temperature in the center of the coil is higher, resulting in uneven temperature distribution inside the fiber drawing furnace. Summary of the Invention

[0005] This application provides a method, apparatus, electronic device, and storage medium for temperature regulation of an optical fiber drawing furnace, in order to improve the uniformity of temperature distribution within the optical fiber drawing furnace.

[0006] In a first aspect, this application provides a method for temperature regulation of an optical fiber drawing furnace, the method comprising:

[0007] The temperature of each of the multiple heating zones in the optical fiber drawing furnace is obtained; each heating zone is heated by a magnetic field generated by a coil corresponding to that heating zone.

[0008] The temperature state of each of the multiple heating zones is determined based on their respective temperatures; the temperature state can be any one of low temperature, normal, or high temperature.

[0009] For each of the multiple heating zones, depending on whether the temperature of the heating zone is at a low or high temperature, the temperature of the heating zone is adjusted according to the temperature status and temperature of the heating zone to obtain the target temperature of the heating zone.

[0010] In one possible implementation, for each of the multiple heating zones, when the temperature state of the heating zone is either low or high, the temperature of the heating zone is adjusted according to the temperature state and temperature of the heating zone to obtain a target temperature for the heating zone, including:

[0011] Based on the temperature state of the heating area, a temperature regulation strategy for the heating area is determined; the temperature regulation strategy is a low-temperature regulation strategy and a high-temperature regulation strategy; wherein, the low-temperature regulation strategy is used to indicate the method of temperature regulation for the heating area with a low temperature state, and the high-temperature regulation strategy is used to indicate the method of temperature regulation for the heating area with a high temperature state.

[0012] Based on the temperature regulation strategy and the temperature of the heating zone, the temperature of the heating zone is regulated to obtain the target temperature.

[0013] In one possible implementation, when the temperature regulation strategy is a low-temperature regulation strategy, the temperature of the heating zone is regulated according to the temperature regulation strategy and the temperature of the heating zone to obtain the target temperature, including:

[0014] Determine the current power of the coil corresponding to the heating area;

[0015] The temperature difference is determined based on the temperature of the heating zone and the temperature threshold; the temperature difference is the temperature value to be adjusted in the heating zone.

[0016] Determine the target power of the coil corresponding to the heating area based on the temperature difference and the current power.

[0017] The temperature of the heating area is adjusted based on the target power to obtain the target temperature.

[0018] In one possible implementation, determining the target power of the coil corresponding to the heating area based on the temperature difference and the current power includes:

[0019] Based on the mapping relationship between temperature difference and power difference, and the temperature difference value, determine the power difference value of the coil corresponding to the heating area;

[0020] Determine the target power based on the current power and the power difference.

[0021] In one possible implementation, when the temperature regulation strategy is a high-temperature regulation strategy, the temperature of the heating zone is regulated according to the temperature regulation strategy and the temperature of the heating zone to obtain the target temperature, including:

[0022] Determine the current power of the coil corresponding to the heating area;

[0023] The temperature difference is determined based on the temperature of the heating zone and the temperature threshold; the temperature difference is the temperature value to be adjusted in the heating zone.

[0024] Based on the current power and temperature difference, determine the target power of the coil corresponding to the heating area;

[0025] Based on the temperature difference, determine the target outflow rate and target inflow rate of the condensate in the heating zone;

[0026] The temperature of the heating zone is adjusted based on the target power, target outflow rate, and target inflow rate to obtain the target temperature.

[0027] In one possible implementation, determining the target outflow rate and target inflow rate of the condensate in the heating zone based on the temperature difference includes:

[0028] Based on the mapping relationship between temperature difference and rate difference, and the temperature difference value, the rate difference value of the condensate is determined; the rate difference value of the condensate is used to indicate the difference between the target outflow rate and the target inflow rate.

[0029] Determine the current inflow rate, current outflow rate, inflow rate range, and outflow rate range of the condensate; wherein the current inflow rate is within the inflow rate range, and the current outflow rate is within the outflow rate range.

[0030] Based on the current inflow rate, current outflow rate, inflow rate range, outflow rate range, and rate difference, determine the target outflow rate and target inflow rate; wherein, the target inflow rate is within the inflow rate range, and the target outflow rate is within the outflow rate range.

[0031] In one possible implementation, determining the temperature state of each of the multiple heating zones based on their respective temperatures includes:

[0032] For each heating zone among multiple heating zones, perform the following operations:

[0033] If the temperature of the heating zone is lower than the temperature threshold, the temperature state of the heating zone is determined to be a low-temperature state.

[0034] When the temperature of the heating zone is equal to the temperature threshold, the temperature state of the heating zone is determined to be normal.

[0035] If the temperature in the heating zone is greater than the temperature threshold, the temperature state of the heating zone is determined to be a high-temperature state.

[0036] Secondly, this application provides a temperature control device for an optical fiber drawing furnace, comprising:

[0037] The acquisition module is used to acquire the temperature of each of the multiple heating zones in the optical fiber drawing furnace; wherein each heating zone is heated by the magnetic field generated by the coil corresponding to the heating zone.

[0038] The determination module is used to determine the temperature state of each of the multiple heating zones based on their respective temperatures; the temperature state can be any one of low temperature state, normal state, and high temperature state.

[0039] The adjustment module is used to adjust the temperature of each heating zone among multiple heating zones, based on the temperature state of the heating zone (whether it is low or high temperature), to obtain the target temperature of the heating zone.

[0040] In one possible implementation, the adjustment module is specifically used for:

[0041] Based on the temperature state of the heating area, a temperature regulation strategy for the heating area is determined; the temperature regulation strategy is a low-temperature regulation strategy and a high-temperature regulation strategy; wherein, the low-temperature regulation strategy is used to indicate the method of temperature regulation for the heating area with a low temperature state, and the high-temperature regulation strategy is used to indicate the method of temperature regulation for the heating area with a high temperature state.

[0042] Based on the temperature regulation strategy and the temperature of the heating zone, the temperature of the heating zone is regulated to obtain the target temperature.

[0043] In one possible implementation, when the temperature regulation strategy is a low-temperature regulation strategy, the regulation module is specifically used for:

[0044] Determine the current power of the coil corresponding to the heating area;

[0045] The temperature difference is determined based on the temperature of the heating zone and the temperature threshold; the temperature difference is the temperature value to be adjusted in the heating zone.

[0046] Determine the target power of the coil corresponding to the heating area based on the temperature difference and the current power.

[0047] The temperature of the heating area is adjusted based on the target power to obtain the target temperature.

[0048] In one possible implementation, the adjustment module is specifically used for:

[0049] Based on the mapping relationship between temperature difference and power difference, and the temperature difference value, determine the power difference value of the coil corresponding to the heating area;

[0050] Determine the target power based on the current power and the power difference.

[0051] In one possible implementation, when the temperature regulation strategy is a high-temperature regulation strategy, the regulation module is specifically used for:

[0052] Determine the current power of the coil corresponding to the heating area;

[0053] The temperature difference is determined based on the temperature of the heating zone and the temperature threshold; the temperature difference is the temperature value to be adjusted in the heating zone.

[0054] Based on the current power and temperature difference, determine the target power of the coil corresponding to the heating area;

[0055] Based on the temperature difference, determine the target outflow rate and target inflow rate of the condensate in the heating zone;

[0056] The temperature of the heating zone is adjusted based on the target power, target outflow rate, and target inflow rate to obtain the target temperature.

[0057] In one possible implementation, the adjustment module is specifically used for:

[0058] Based on the mapping relationship between temperature difference and rate difference, and the temperature difference value, the rate difference of condensate is determined; the rate difference of condensate is used to indicate the difference between the outflow rate and the inflow rate.

[0059] Determine the current inflow rate, current outflow rate, inflow rate range, and outflow rate range of the condensate; wherein the current inflow rate is within the inflow rate range, and the current outflow rate is within the outflow rate range.

[0060] Based on the current inflow rate, current outflow rate, inflow rate range, outflow rate range, and rate difference, determine the target outflow rate and target inflow rate; wherein, the target inflow rate is within the inflow rate range, and the target outflow rate is within the outflow rate range.

[0061] In one possible implementation, the determining module is specifically used for:

[0062] For each heating zone among multiple heating zones, perform the following operations:

[0063] If the temperature of the heating zone is lower than the temperature threshold, the temperature state of the heating zone is determined to be a low-temperature state.

[0064] When the temperature of the heating zone is equal to the temperature threshold, the temperature state of the heating zone is determined to be normal.

[0065] If the temperature in the heating zone is greater than the temperature threshold, the temperature state of the heating zone is determined to be a high-temperature state.

[0066] Thirdly, this application provides an electronic device, comprising:

[0067] At least one processor; and

[0068] A memory that is communicatively connected to at least one processor; wherein,

[0069] The memory stores instructions that can be executed by at least one processor to cause the at least one processor to perform the methods involved in the first aspect and any possible implementation.

[0070] Fourthly, this application provides a non-transitory computer-readable storage medium storing computer instructions, wherein the computer instructions are used to cause a computer to perform the methods involved in the first aspect and any possible implementation.

[0071] Fifthly, this application provides a computer program product, including a computer program that, when executed by a processor, implements the methods involved in the first aspect and any possible implementation.

[0072] In a sixth aspect, this application provides a chip including at least one processor for executing program instructions to perform the methods involved in the first aspect and any possible implementation.

[0073] The temperature control method, apparatus, electronic equipment, and storage medium for fiber optic drawing furnaces provided in this application achieve independent, layered temperature acquisition across multiple heating zones of the fiber optic drawing furnace. This allows for precise determination of the low-temperature, normal, and high-temperature states of each zone, and targeted temperature adjustment only for abnormally low-temperature or high-temperature zones, combining their actual temperature state with real-time temperature. This ensures that each heating zone returns to the target temperature required by the process. This layered monitoring and differentiated precise control method reduces the probability of localized temperature deviations that are prone to occur in traditional overall temperature control, and improves the uniformity of temperature distribution within the fiber optic drawing furnace. Attached Figure Description

[0074] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0075] Figure 1 This is a schematic diagram of the system architecture provided for an embodiment of this application;

[0076] Figure 2 A schematic flowchart illustrating a method for temperature control in an optical fiber drawing furnace, provided in an embodiment of this application;

[0077] Figure 3 A schematic diagram of a process for determining a target temperature is provided for an embodiment of this application;

[0078] Figure 4 A schematic diagram of an optical fiber drawing furnace provided in an embodiment of this application;

[0079] Figure 5This application provides a schematic diagram of the structure of a temperature control device for an optical fiber drawing furnace.

[0080] Figure 6 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application.

[0081] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0082] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0083] The collection, storage, use, processing, transmission, provision, and disclosure of financial data or user data involved in the technical solution of this application all comply with the provisions of relevant laws and regulations and do not violate public order and good morals.

[0084] It should be noted that in the embodiments of this application, certain software, components, models and other existing solutions in the industry may be mentioned. These should be regarded as exemplary and are only intended to illustrate the feasibility of implementing the technical solution of this application. However, it does not mean that the applicant has used or necessarily used the solution.

[0085] An optical fiber drawing furnace is a device used to draw optical fiber preforms into optical fibers. During the fiber drawing process, it is necessary to control the temperature inside the furnace. It should be noted that the temperature uniformity within the furnace directly affects the fiber's geometry, mechanical strength, and optical performance; therefore, it is essential to adjust the temperature within the furnace to ensure a uniform temperature distribution.

[0086] In related technologies, the temperature inside an optical fiber drawing furnace can be controlled by coil heating. Specifically, the coil is spirally wound around the furnace body. When energized, the coil heats the interior of the furnace through electromagnetic induction. The temperature control module of the optical fiber drawing furnace can regulate the temperature inside the furnace by controlling the power of the coil.

[0087] However, since the coil heats the inside of the fiber drawing furnace through electromagnetic induction after being energized, the temperature is higher in areas with higher magnetic field density and lower in areas with lower magnetic field density. Furthermore, because the coil is spirally wound around the inside of the fiber drawing furnace, the magnetic field density is higher in the center of the coil after it is energized.

[0088] In summary, when the temperature of the optical fiber drawing furnace is adjusted using the above methods, the temperature at the center of the coil is higher than that at both ends of the coil, resulting in uneven temperature distribution within the optical fiber drawing furnace.

[0089] Some related technologies involve filling the fiber drawing furnace with inert gas, which can improve the uniformity of temperature distribution within the furnace through its flow. However, the inert gas generates irregular gas disturbances during its flow. These disturbances directly affect the molten fiber preform being drawn, disrupting the stable environment required for the drawing process and potentially leading to problems such as fiber diameter fluctuations and surface defects.

[0090] Based on this, this application provides a temperature control method for an optical fiber drawing furnace. This method involves independently acquiring temperature data from multiple heating zones within the furnace, accurately determining the low-temperature, normal, and high-temperature states of each zone, and then specifically adjusting the temperature of abnormal zones (low-temperature or high-temperature zones) based on their actual temperature and real-time temperature. This ensures that all heating zones return to the target temperature required by the process. This layered monitoring and differentiated precise control method reduces the probability of localized temperature deviations that are prone to occur in traditional overall temperature control, and improves the uniformity of temperature distribution within the optical fiber drawing furnace.

[0091] To facilitate understanding, the following will be combined with... Figure 1 The system architecture applicable to the embodiments of this application will be described.

[0092] Figure 1 This is a schematic diagram of the system architecture provided for an embodiment of this application. Figure 1 As shown, the system includes an optical fiber drawing furnace 11, a temperature control module 12, a coil 13, a temperature sensor 14, and a power supply 15. The coil 13 is located inside the optical fiber drawing furnace 11, and the temperature sensor 14 is mounted on the coil 13 and used to detect the temperature of the coil 13. The coil 13 is connected to the power supply 15, which provides power to the coil 13. The temperature sensor 14 is also connected to the power supply 15.

[0093] In practical applications, data can be transmitted between the temperature sensor 14 and the temperature control module 12. The temperature control module 12 can acquire the temperature of the coil 13 detected by the temperature sensor 14 and determine whether the temperature of the coil 13 is equal to the temperature threshold. If the temperature of the coil 13 is different from the temperature threshold, the temperature sensor 14 adjusts the power of the coil 13 through the power supply 15, thereby regulating the temperature of the coil 13 and thus regulating the temperature inside the optical fiber drawing furnace 11.

[0094] It should be noted that, Figure 1 This is merely an example to illustrate a system architecture diagram, and is not a limitation on system architecture diagrams.

[0095] It should be noted that the execution subject in each embodiment of this application can be a chip, chip module, processor, microprocessor, etc., or it can be a device integrating the above-mentioned chips, chip modules, processors, or microprocessors, such as a server. The specific execution subject in each embodiment of this application is not limited, and it can be selected and set according to actual needs. In the following embodiments, a server integrating the above-mentioned chips, chip modules, processors, or microprocessors is used as an example for description, which does not constitute a limitation on the actual execution subject.

[0096] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0097] Figure 2 This is a schematic flowchart illustrating a method for temperature control in an optical fiber drawing furnace, as provided in an embodiment of this application. Figure 2 As shown, the method may include the following steps:

[0098] S201. Obtain the temperature of each of the multiple heating zones in the optical fiber drawing furnace; wherein, each heating zone is heated by the magnetic field generated by the coil corresponding to the heating zone.

[0099] An optical fiber drawing furnace is an industrial heating device used to heat and melt solid quartz raw materials and draw them into continuous optical fibers. It is a core piece of equipment in the optical fiber forming process. In some embodiments, the optical fiber drawing furnace can be divided into multiple heating zones. Each heating zone refers to a specific spatial area within the optical fiber drawing furnace that is divided into layers along the axial direction and heated by a dedicated, independent ring coil. Each zone provides corresponding heat for melting the quartz raw materials within the furnace.

[0100] The temperature of the heating zone refers to the real-time ambient temperature within that zone. The coil corresponding to each heating zone is an independent ring-shaped coil arranged axially in layers within the fiber optic drawing furnace. Made of a material with excellent conductivity, it is the core component for generating the heating magnetic field. Each heating zone's corresponding coil can be driven by a separate power supply, allowing for precise temperature control by adjusting the power supply to alter the strength of its generated magnetic field.

[0101] In some embodiments, for each of the multiple heating zones, at least two temperature sensing probes are deployed on the coil corresponding to that heating zone, and each temperature sensing probe is used to detect the temperature of the coil corresponding to that heating zone. Thus, the temperature control module of the optical fiber drawing furnace can obtain the temperature of the heating zone by acquiring the temperature data detected by the temperature sensing probes deployed on the coil corresponding to that heating zone. The temperature sensing probes can be, for example, programmable logic controllers (PLCs).

[0102] S202. Determine the temperature state of each of the multiple heating zones based on their respective temperatures; the temperature state can be any one of low temperature state, normal state, and high temperature state.

[0103] For each of the multiple heating zones, the following operations are performed: if the temperature of a heating zone is less than the temperature threshold, the temperature state of the heating zone is determined to be a low-temperature state; if the temperature of a heating zone is equal to the temperature threshold, the temperature state of the heating zone is determined to be a normal state; if the temperature of a heating zone is greater than the temperature threshold, the temperature state of the heating zone is determined to be a high-temperature state.

[0104] The temperature status of each heating zone is a categorized qualitative judgment of the current heating condition of each heating zone. In some embodiments, the temperature status can be any one of low temperature, normal, and high temperature.

[0105] The temperature threshold is a preset normal temperature threshold in the temperature control module. It should be noted that the temperature thresholds for each heating zone can be the same or different.

[0106] The low-temperature status indicates a condition where the real-time monitored temperature of the heating zone is lower than the preset normal temperature threshold of the temperature control module. The low-temperature status signifies that the current heat supply to the corresponding heating zone is insufficient to meet the process temperature requirements for melting the quartz raw material.

[0107] The "normal state" indicates that the real-time monitored temperature of the heating zone equals the preset normal temperature threshold of the temperature control module. The normal state signifies that the current heating conditions of the corresponding heating zone meet the process requirements, heat replenishment and dissipation are in dynamic equilibrium, and the process temperature requirements for quartz raw material melting are stably met.

[0108] The high-temperature status indicates a condition where the real-time monitored temperature of the heating zone exceeds the preset normal temperature threshold of the temperature control module. This high-temperature status signifies excess heat in the corresponding heating zone, which can easily lead to excessive melting of the quartz raw material, an imbalance in the furnace temperature gradient, and even affect the quality of optical fiber forming.

[0109] S203. For each heating zone among multiple heating zones, when the temperature state of the heating zone is low or high, adjust the temperature of the heating zone according to the temperature state and temperature of the heating zone to obtain the target temperature of the heating zone.

[0110] If the temperature of the heating zone is normal, it means that the current temperature of the heating zone can meet the process temperature requirements for melting the raw materials. Therefore, if the temperature of the heating zone is normal, there is no need to adjust the temperature of the heating zone.

[0111] If the temperature in the heating zone is either too low or too high, it indicates that the current temperature of the heating zone cannot meet the process temperature requirements for melting the quartz raw material. Therefore, if the temperature in the heating zone is either too low or too high, it is necessary to adjust the temperature of the heating zone.

[0112] In some embodiments, the temperature control module can determine the temperature difference value of the heating area based on the temperature of the heating area and the temperature threshold, and adjust the temperature of the heating area by cooling or heating according to the temperature difference value to obtain the target temperature.

[0113] exist Figure 2 In the illustrated embodiment, by implementing independent temperature acquisition across multiple heating zones of the optical fiber drawing furnace, accurately determining the low-temperature, normal, and high-temperature states of each zone, and only targeting abnormally low-temperature or high-temperature zones, the actual temperature state is combined with the real-time temperature for targeted temperature adjustment, ensuring that each heating zone returns to the target temperature required by the process. This layered monitoring and differentiated precise control method reduces the probability of localized temperature deviations that are prone to occur in traditional overall temperature control, and improves the uniformity of temperature distribution within the optical fiber drawing furnace.

[0114] exist Figure 2 Based on the illustrated embodiment, the following section discusses each of the multiple heating zones, in conjunction with... Figure 3The method of adjusting the temperature of the heating area to obtain the target temperature of the heating area in this application will be further explained.

[0115] Figure 3 This is a schematic diagram illustrating a process for determining a target temperature, provided as an embodiment of this application. Figure 3 As shown, the process may include the following steps:

[0116] S301. Determine the temperature regulation strategy for the heating area based on the temperature state of the heating area; the temperature regulation strategy is a low-temperature regulation strategy and a high-temperature regulation strategy; wherein, the low-temperature regulation strategy is used to indicate the method of temperature regulation for the heating area with a low temperature state, and the high-temperature regulation strategy is used to indicate the method of temperature regulation for the heating area with a high temperature state.

[0117] The temperature regulation strategy is used to indicate the regulation method by which the temperature control module regulates the temperature of the heating area. In some embodiments, the temperature regulation strategy is a low-temperature regulation strategy or a high-temperature regulation strategy.

[0118] The low-temperature regulation strategy involves raising the temperature of the heating zone when the temperature is below a temperature threshold. The high-temperature regulation strategy involves lowering the temperature of the heating zone when the temperature is above a temperature threshold.

[0119] Therefore, when the temperature of the heating zone is at a low temperature, the temperature control module determines the temperature regulation strategy of the heating zone to be a low temperature regulation strategy; when the temperature of the heating zone is at a high temperature, the temperature control module determines the temperature regulation strategy of the heating zone to be a high temperature regulation strategy.

[0120] S302. Based on the temperature regulation strategy and the temperature of the heating area, the temperature of the heating area is regulated to obtain the target temperature.

[0121] In some embodiments, when the temperature regulation strategy is a low-temperature regulation strategy, the temperature of the heating area is regulated according to the temperature regulation strategy and the temperature of the heating area to obtain the target temperature in the following manner: determine the current power of the coil corresponding to the heating area; determine the temperature difference based on the temperature of the heating area and the temperature threshold; the temperature difference is the temperature value to be adjusted for the heating area; determine the target power of the coil corresponding to the heating area based on the temperature difference and the current power; and regulate the temperature of the heating area based on the target power to obtain the target temperature.

[0122] Current power refers to the actual power supplied to the coil corresponding to the heating area at the current moment. In some embodiments, the temperature control module can determine the current power from the power supplied to the coil corresponding to the heating area.

[0123] The temperature difference value indicates the degree of deviation between the actual temperature of the heated area and the reference temperature at the current moment. The larger the absolute value of the temperature difference, the greater the deviation between the actual temperature of the heated area and the reference temperature at the current moment; the smaller the absolute value of the temperature difference, the smaller the deviation between the actual temperature of the heated area and the reference temperature at the current moment.

[0124] Target power refers to the power required to power the coil corresponding to the heating area to reach the target temperature.

[0125] In some embodiments, the temperature control module determines the target power based on the temperature difference and the current power in the following ways: based on the mapping relationship between the temperature difference and the power difference and the temperature difference, the power difference of the coil corresponding to the heating area is determined; based on the current power and the power difference, the target power is determined.

[0126] For example, suppose the mapping relationship between temperature difference and power difference can be shown in Table 1:

[0127] Table 1

[0128]

[0129] Assuming the current power is 80kW and the temperature difference is 20℃, the power difference of the coil corresponding to the heating area is determined to be 10kW. Then, the temperature control module determines the target power as 80kW + 10kW = 90kW based on the current power and the power difference.

[0130] In some embodiments, the temperature control module can control the power supply to the coil corresponding to the heating area, adjusting the power supplied to the coil to a target power. When the coil corresponding to the heating area is powered by the target power, the magnetic field strength generated by the coil is stronger, thereby raising the temperature of the heating area to the target temperature.

[0131] In some embodiments, when the temperature regulation strategy is a high-temperature regulation strategy, the temperature of the heating area is regulated according to the temperature regulation strategy and the temperature of the heating area to obtain the target temperature in the following manner: The current power of the coil corresponding to the heating area is determined; a temperature difference is determined based on the temperature of the heating area and a temperature threshold; the temperature difference is the temperature value to be adjusted in the heating area; the target power of the coil corresponding to the heating area is determined based on the current power and the temperature difference; the target outflow rate and target inflow rate of the condensate in the heating area are determined based on the temperature difference; the temperature of the heating area is regulated based on the target power, the target outflow rate, and the target inflow rate to obtain the target temperature.

[0132] In some embodiments, a single-coil condensation system is deployed in the heating area, and the single-coil condensation system includes an outlet water control unit and an inlet water control unit. The condensation system is used to cool the heating area, the outlet water control unit controls the outflow rate of the condensate, and the inlet water control unit controls the inflow rate of the condensate. The condensate is a low-temperature flowing liquid in the condensation system; exemplaryly, the condensate may be, for example, water.

[0133] The target outflow rate refers to the real-time flow rate quantified by the amount of condensate flowing out of the outlet corresponding to the heating zone per unit time after the condensate has absorbed heat in the heating zone; the target inflow rate is the real-time flow rate quantified by the amount of condensate flowing into the inlet corresponding to the heating zone per unit time.

[0134] In some embodiments, the method by which the temperature control module determines the target power when the temperature is at a high temperature can be referred to the method by which the temperature control module determines the target power when the temperature is at a low temperature, and will not be repeated here.

[0135] In some embodiments, the temperature control module determines the target outflow rate and target inflow rate of condensate in the heating zone based on the temperature difference as follows: The rate difference of the condensate is determined based on the mapping relationship between the temperature difference and the rate difference, and the temperature difference value; the rate difference of the condensate is used to indicate the difference between the target outflow rate and the target inflow rate; the current inflow rate, current outflow rate, inflow rate range, and outflow rate range of the condensate are determined; wherein the current inflow rate is within the inflow rate range, and the current outflow rate is within the outflow rate range; the target outflow rate and target inflow rate are determined based on the current inflow rate, current outflow rate, inflow rate range, outflow rate range, and rate difference value.

[0136] The rate difference is a quantitative deviation between the target outflow rate and the target inflow rate of the condensate. In some embodiments, the rate difference is used to indicate the cooling rate of the heated area by the condensate; the smaller the absolute value of the rate difference, the slower the cooling rate of the heated area by the condensate; the larger the absolute value of the rate difference, the faster the cooling rate of the heated area by the condensate.

[0137] The current inflow rate refers to the rate at which condensate flows into the heating zone at the current moment; the current outflow rate refers to the rate at which condensate flows out of the heating zone at the current moment.

[0138] The inflow rate range refers to the reasonable range of condensate inflow rate preset in the temperature control module based on the equipment safety requirements of the optical fiber drawing furnace, the heat exchange efficiency of the condensate, and the process limitations of the heating area. The inflow rate range is a fixed process safety range. The upper limit avoids excessive cooling due to an excessively high inflow rate, and the lower limit avoids insufficient cooling due to an excessively low inflow rate. It is the core boundary parameter that constrains the adjustment of the inflow rate.

[0139] The outflow rate range refers to a reasonable range of values ​​for the condensate outflow rate preset in the temperature control module, based on the equipment safety requirements of the optical fiber drawing furnace, the heat exchange efficiency of the condensate, and the process limitations of the heating area. The outflow rate range is a fixed process safety range that matches the inflow rate range. The upper and lower limits respectively prevent cooling abnormalities caused by excessively high or low outflow rates, and are the core boundary parameters that constrain the adjustment of the outflow rate.

[0140] Therefore, the current inflow rate is within the inflow rate range, and the current outflow rate is within the outflow rate range.

[0141] In some embodiments, the temperature control module determines the target outflow rate and target inflow rate based on the current inflow rate, current outflow rate, inflow rate range, outflow rate range, and rate difference as follows: The temperature control module first uses the rate difference as the core quantification basis, taking the current inflow rate and current outflow rate as the basic calculation benchmarks, to initially derive the initial values ​​of the target inflow rate and target outflow rate that perfectly match the rate difference. Subsequently, the temperature control module compares and verifies the initial value of the target inflow rate with the inflow rate range. If the initial value is within the inflow rate range, it is directly determined as the target inflow rate. If the initial value exceeds the upper or lower limit of the inflow rate range, the upper or lower limit of the inflow rate range is taken as the target inflow rate, ensuring that the inflow rate regulation meets equipment safety and process limitations.

[0142] The temperature control module uses the verified target inflow rate as a benchmark and recalculates the target outflow rate calibration value based on the rate difference, ensuring that the difference between the two strictly matches the quantification requirements of the rate difference. Finally, the target outflow rate calibration value is compared and verified a second time with the preset outflow rate range. If the calibration value is within the outflow rate range, it is directly determined as the final target outflow rate. If the calibration value exceeds the upper or lower limit of the outflow rate range, the upper or lower limit of the outflow rate range is taken as the target outflow rate, respectively.

[0143] After determining the target power, target outflow rate, and target inflow rate, the temperature control module controls the power supply to the coil corresponding to the heating area, adjusting the power output to the coil to the target power. When the coil is powered at the target power, the magnetic field strength generated by the coil is weaker, thereby reducing the temperature of the heating area to the target temperature.

[0144] It should be noted that although the target power is used to generate the target temperature in the heating zone, there is residual heat in the heating zone. The temperature control module can control the water outlet control unit to discharge condensate according to the target outflow rate, and control the water inlet control unit to discharge condensate according to the target inflow rate. In this way, the condensate carries away the excess heat in the heating zone, bringing the temperature of the heating zone down to the target temperature.

[0145] exist Figure 3 In the illustrated embodiment, for low-temperature conditions, only single-dimensional control of coil power is used. A preset mapping relationship between temperature difference and power difference quantifies the temperature deviation into a power deviation. Combined with the current coil power, the target power is precisely determined to achieve targeted heat replenishment, avoiding redundant control. For high-temperature conditions, a dual-dimensional coordinated control of coil power and condensate flow rate is employed. Similarly, precise power reduction is achieved on the power side, while on the flow side, the condensate flow rate difference is determined through a preset mapping relationship between temperature difference and flow rate difference. Then, multi-parameter calculations and boundary checks are performed based on the current inflow / outflow rate and a preset safe flow rate range to ensure that the derived target inflow / outflow rates are within the process and equipment safety range. This ensures that the condensate heat dissipation efficiency matches the high-temperature cooling requirements and avoids equipment failures or process deviations caused by abnormal flow rates. Simultaneously, all control actions are independently performed based on the temperature deviation and dedicated hardware parameters of each heating zone, allowing the temperature adjustment of each heating zone to precisely adapt to its own operating conditions. This efficiently corrects temperature deviations in each zone, effectively improving the overall temperature distribution uniformity within the fiber drawing furnace, stabilizing the melting state of the quartz raw material within the furnace, and thus ensuring the geometrical accuracy and core optical and mechanical properties of the formed fiber.

[0146] Based on the above embodiments, the following is combined with Figure 4The optical fiber drawing furnace provided in the embodiments of this application will be further described.

[0147] Figure 4 This is a schematic diagram of an optical fiber drawing furnace provided in an embodiment of this application. Figure 4 As shown, the optical fiber drawing furnace 40 includes a furnace body 41, a temperature control module 42, multiple ring coils 43, a temperature sensing probe 44, a gas guide pipe 45, a heating, heat preservation, and magnetic shielding device 46, a graphite sensor 47, a furnace mouth sealing device 48, quartz raw material 49, an annealing device 410, a water outlet control unit 411, a water inlet control unit 412, a water outlet collector 413, a water inlet collector 414, a water outlet collector inlet 415, a water inlet collector inlet 416, a water inlet side coil wiring cable 417, a furnace bottom sealing device 418, and a water outlet side coil wiring cable 419.

[0148] The furnace body 41 is the main support and enclosed structural carrier of the entire optical fiber drawing furnace. It features a high-temperature resistant, sealed cylindrical design and serves as the foundation for the installation and layout of all functional components. Its upper end is seamlessly connected to the furnace opening sealing device 48, and its lower end is fitted with the furnace bottom sealing device 418, forming a closed high-temperature process space within the furnace. The interior of the furnace body 41 is divided into multiple independent heating zones along the axial direction. Each zone has reserved space for a dedicated independent ring coil 43, graphite inductor 47, and condensate water-cooling circuit. It possesses high-temperature resistance, heat insulation, and sealing properties, adapting to the high-temperature conditions of electromagnetic induction heating within the furnace. This effectively prevents the high temperature inside the furnace from being conducted to external components, while providing a stable, enclosed environment for the melting of quartz raw materials and the drawing of optical fibers, avoiding interference from the external environment in the process.

[0149] Multiple ring coils 43 are arranged in layers along the axial direction of the furnace body 41 in each independent heating zone. Each ring coil corresponds specifically to a heating zone and a graphite sensor 47, with no shared or overlapping coils. They are made of materials with excellent electrical conductivity. The ring coil 43 is the core component for generating the alternating electromagnetic field. Its outer side is connected to the outlet water collector 413 via the outlet coil wiring cable 417 and to the inlet water collector 414 via the inlet coil wiring cable 419, thus achieving independent power connection to different power supplies L1-L10. The temperature control module can adjust the power supply through power supplies L1-L10 to change the intensity of its generated alternating electromagnetic field, indirectly regulating the heating efficiency of the corresponding graphite sensor. This is the core structural basis for achieving independent layered temperature control within the furnace and is also the direct actuator for power regulation under low and high temperature conditions.

[0150] The temperature sensor probe 44 is the core data acquisition component of the fiber optic drawing furnace temperature control system. It is a special temperature measuring element that is resistant to high temperatures and electromagnetic interference. It is arranged in a one-to-one correspondence with the key temperature measuring points in each independent heating zone inside the furnace, adjacent to the graphite sensor in each zone. The temperature sensor probe 44 is used to collect the actual ambient temperature of the corresponding heating zone.

[0151] The gas guide pipe 45 is a key component for core positioning and thermal and airflow control within the optical fiber drawing furnace. Located inside the furnace body 41 at the lower level, its overall position is calibrated and fixed by the furnace bottom sealing device 418, leaving no room for offset adjustment. The core function of the gas guide pipe 45 is to ensure that the graphite sensors 47 in each heating zone are always centered within the furnace body 41, thus preventing optical fiber forming deviations caused by heating zone offsets from the perspective of the heating source's centering. This ultimately achieves precise control over the fiber's non-circularity. Simultaneously, its structure adapts to the flow path of the protective gas within the furnace, assisting in guiding the protective gas to diffuse evenly within the furnace, ensuring the uniformity of the thermal field distribution and providing a favorable airflow and temperature environment for the stable melting of the quartz raw material 49.

[0152] The heating, heat preservation, and magnetic shielding device 46 is an integrated functional component adapted to the electromagnetic induction heating process within the fiber optic drawing furnace. It is installed inside the furnace body 41, specifically between each layer of independent ring coils 43 and the corresponding graphite inductor 47. It is also installed between adjacent heating areas and at the junctions between the heating areas of the furnace body 41 and the external structure. The magnetic shielding function of the heating, heat preservation, and magnetic shielding device 46 effectively shields the alternating electromagnetic field generated by the multiple layers of independent ring coils 43. This prevents the magnetic field from spreading and interfering with adjacent heating areas, avoiding localized overheating or uneven heating caused by the superposition of magnetic fields in adjacent areas. It also prevents the magnetic field from leaking to the outside of the furnace body 41, protecting electrical control components such as the external power supply cabinet and flow control unit, and reducing the impact of electromagnetic interference on equipment operation.

[0153] Graphite inductors 47 are arranged in each layer of independent heating zones inside the furnace body 41, corresponding one-to-one with the multi-layer independent ring coils 43 of each zone and within the magnetic field range of the coils. They are the core heat-generating components for electromagnetic induction heating in the fiber drawing furnace 40. Graphite inductors 47, under the influence of the alternating electromagnetic field generated by the corresponding coils, generate Joule heating through electromagnetic induction, providing direct heat for the melting of the quartz raw material 49 in their respective heating zones. Their heating efficiency is positively correlated with the power supply of the corresponding coils, and their central position is calibrated and fixed by the gas guide pipe 45, ensuring no positional deviation. This ensures that the heat output center of each heating zone coincides with the melting center of the quartz raw material 49, further guaranteeing heating uniformity and fiber forming accuracy.

[0154] The furnace mouth sealing device 48 is installed at the furnace mouth position on the upper end of the furnace body 41. It is the core component for sealing and supplying protective gas at the upper end of the furnace body 41. It integrates three major functional structures: an internal gas intake channel, a furnace mouth sealing structure, and a water-cooling structure, all of which work together. The water-cooling structure is adapted to the high-temperature conditions at the furnace mouth, and uses condensate circulation cooling to ensure the structural stability and service life of the device itself. The internal gas intake channel is responsible for introducing inert protective gas into the furnace to prevent the molten quartz raw material 49 and the optical fiber being drawn from contacting air and oxidizing. The furnace mouth sealing structure completely isolates the furnace from the outside air, preventing leakage of protective gas and waste, maintaining stable gas pressure inside the furnace, preventing external airflow from interfering with the heat field distribution inside the furnace, and ensuring the temperature stability of each heating zone.

[0155] Quartz raw material 49 is the core matrix material for the optical fiber drawing process in the optical fiber drawing furnace. It is usually a pre-formed rod-shaped structure, vertically placed inside the core melting area of ​​the furnace body 41, precisely corresponding to the center position of each layer of independent heating area, and within the effective heating range of the graphite sensor 47. Its placement matches the center of the graphite sensor 47 positioned by the gas guide, ensuring that the raw material can uniformly receive the heat transferred by the graphite sensor. In the optical fiber drawing process, the high-temperature Joule heat generated by the graphite sensor 47 heats it to a molten state. The molten quartz raw material 49 is slowly drawn out from the optical fiber drawing exit of the furnace body 41 under the continuous traction of the external traction equipment, forming a continuous optical fiber core prototype.

[0156] The annealing device 410 is a key post-processing component in the fiber drawing process of the fiber drawing furnace. It is directly installed at the fiber drawing output end of the furnace body 41, forming a seamless continuous process flow with the melting and drawing process of the furnace body 41. The annealing device 410 has a built-in independent high-precision temperature control system and heat preservation channel. It can preset and adjust the annealing gradient temperature, annealing time and heat preservation environment according to the drawing specifications of the fiber and the characteristics of the quartz material. Its core function is to slowly and gradually cool down and anneal the high-temperature molten fiber that has just been drawn from the furnace, effectively eliminating the internal stress generated in the fiber during rapid drawing and sudden temperature changes. At the same time, it stabilizes the crystal structure and molecular arrangement of the fiber, avoiding problems such as easy breakage, large bending loss and unstable optical transmission performance caused by internal stress in subsequent use.

[0157] The water outlet control unit 411 is one of the core control components of the water cooling system of the optical fiber drawing furnace. It is connected to the water outlet collector 413 and is automatically controlled by the temperature control module 42. It is a centralized control component, but it can realize independent flow regulation of each layer of coil water cooling circuit.

[0158] The water collector 413 is a core centralized component in the fiber optic drawing furnace, serving as both a centralized condensate collection unit and a circuit connection adapter. Located on the outside of the furnace body 41, it is connected to the water outlet control unit 411 and the water outlet side coil wiring cable 419. The internal connector of the water collector 413 is made of materials with excellent conductivity, such as copper. This connector is fixedly connected to the insulating water collector body, effectively isolating the circuits of different coil layers and preventing short circuits or sparking between coils. An external terminal block or terminal post is provided for connecting to the water outlet side coil wiring cable 419 and the power supply. Simultaneously, this component acts as a centralized condensate collection carrier, receiving condensate that has absorbed heat in the water-cooling circuits of each heating zone within the furnace. After being regulated by the water outlet control unit 411, the condensate is discharged uniformly from the outlet of the water collector 413, achieving centralized collection and flow distribution of the condensate.

[0159] The water inlet 415 of the water collector is the core output port of the condensate in the entire optical fiber drawing furnace water cooling system. It is located on the outside of the water collector 412 and is connected to the external condensate recovery or heat dissipation pipeline. The water inlet 416 of the water collector is responsible for collecting and discharging the condensate that has completed heat absorption and temperature rise in the water cooling circuit of each heating zone into the furnace water cooling system. The discharged condensate can enter the external heat dissipation equipment for cooling and then be recycled. It is a key outlet component for the condensate to complete the water inlet-heat exchange-outlet cycle in the water cooling system, ensuring the continuous circulation of condensate and heat dissipation efficiency.

[0160] The outlet coil wiring cable 419 is one of the core connection components for the circuit transmission of the fiber optic drawing furnace. One end connects to the terminal block / terminal of the outlet water collector 413, and the other end connects to the external power supply cabinet, establishing a circuit transmission path between the multi-layer independent ring coils 43 and the power supply cabinet. The outlet coil wiring cable 419 works in conjunction with the inlet coil wiring cable 417 to achieve independent power connection between the independent ring coils of different layers and different power supply cabinets L1-L10, ensuring the independence and stability of the power supply to each coil, without power supply cross-interference. This forms the basis for the circuit transmission of the temperature control module 42, which adjusts the power supply cabinet power to achieve independent temperature control of each heating zone.

[0161] The water inlet control unit 412 is another core control component of the optical fiber drawing furnace water cooling system. Connected to the water inlet collector 414, it is also centrally and automatically controlled by the temperature control module 42, enabling independent adjustment of the inflow flow rate to each layer of coil water cooling circuits. Based on the temperature difference between each heating zone and the heat dissipation requirements under high-temperature conditions analyzed by the temperature control module 42 using a PID algorithm, the water inlet control unit 412 precisely controls the inflow flow rate of condensate into the water cooling circuits of each heating zone. Working in conjunction with the water outlet control unit 411, it forms a closed-loop control system for condensate inflow and outflow, ensuring that the condensate inflow rate matches the heat dissipation requirements of the corresponding heating zone, guaranteeing water cooling efficiency. It is a crucial component for dual-dimensional temperature control under high-temperature conditions.

[0162] The inlet water collector 414 is a centralized component used in conjunction with the outlet water collector 413. It is located on the outside of the furnace body 41 and is connected to the inlet control unit 412, the inlet coil wiring cable 417, and the outlet water collector inlet 415. It has the dual functions of centralized condensate distribution and circuit connection adaptation. The internal structure of the inlet water collector 414 is the same as that of the outlet water collector 413. It uses copper internal connectors to connect with the insulated body to prevent short circuits and arcing between coils of different layers. The external terminal block / terminal is provided to connect to the inlet coil wiring cable and the power cabinet. At the same time, this component is connected to the external cooling water source through the outlet water collector inlet 415, and branches the condensate to branch inlets corresponding to the independent ring coils 43 of each layer. This realizes centralized supply and independent layered delivery of cooling water, and provides condensate input guarantee for the water cooling circuit of each heating area.

[0163] The inlet 416 of the water inlet collector is the core input port for condensate in the entire optical fiber drawing furnace water cooling system. It is located on the outside of the water inlet collector 413 and is directly connected to the external cooling water source pipeline. The outlet 415 is the only channel for cooling water to enter the furnace water cooling system. After the external condensate enters the water inlet collector 413 through this inlet, it is precisely distributed to the dedicated water cooling circuits of each heating zone of the furnace body through the branch structure inside the water inlet collector 413. This provides a continuous and stable water supply for the circulating cooling of condensate in each zone and is a fundamental port component for the normal operation of the water cooling system.

[0164] The inlet-side coil wiring cable 417 is an auxiliary connection component for the circuit transmission of the fiber optic drawing furnace. One end connects to the terminal block / terminal of the inlet water collector 414, and the other end connects to the external power supply cabinet. Together with the outlet-side coil wiring cable 419, it forms a dual-circuit power supply connection for the coils, further ensuring the stability of the connection between each layer's independent ring coil 43 and the power supply cabinet. The inlet-side coil wiring cable 417 also supports independent power supply to different layers of coils and different power supply cabinets L1-L10, without power supply crossover. It is a supplementary circuit transmission component for achieving independent power regulation at different levels, ensuring the continuity and controllability of power supply to each coil.

[0165] The furnace bottom sealing device 418 is installed at the bottom of the furnace body 41. It is a sealing and core positioning component at the bottom of the furnace body 41. It integrates a water cooling structure, which can circulate condensate to cool the furnace bottom and adapt to the high-temperature conditions, ensuring the stability and service life of its structure. The core function of the furnace bottom sealing device 418 is to accurately and permanently position the gas guide inside the furnace body 41. By locking the position of the gas guide pipe 45, it indirectly ensures that the graphite sensor 47 in each heating zone inside the furnace is at the center reference position of the furnace body 41. This avoids fiber optic forming deviation caused by the offset of the heating center at the heating source level, and ultimately achieves effective control of fiber optic non-roundness. At the same time, its sealing structure can seal the bottom of the furnace body, preventing the leakage of protective gas inside the furnace and the entry of outside air into the furnace, maintaining the stability of the gas pressure and thermal field inside the furnace.

[0166] Figure 5 This is a schematic diagram of the structure of a temperature control device for an optical fiber drawing furnace provided in an embodiment of this application. Figure 5 As shown, the temperature control device 50 of the optical fiber drawing furnace includes: an acquisition module 51, a determination module 52, and an adjustment module 53, wherein...

[0167] The acquisition module 51 is used to acquire the temperature of each of the multiple heating zones in the optical fiber drawing furnace; wherein each heating zone is heated by the magnetic field generated by the coil corresponding to the heating zone.

[0168] The determination module 52 is used to determine the temperature state of each of the multiple heating zones based on their respective temperatures; the temperature state can be any one of low temperature state, normal state, and high temperature state.

[0169] The adjustment module 53 is used to adjust the temperature of each heating zone in multiple heating zones, based on the temperature state of the heating zone and the temperature of the heating zone, to obtain the target temperature of the heating zone.

[0170] In one possible implementation, the adjustment module 53 is specifically used for:

[0171] Based on the temperature state of the heating area, a temperature regulation strategy for the heating area is determined; the temperature regulation strategy is a low-temperature regulation strategy and a high-temperature regulation strategy; wherein, the low-temperature regulation strategy is used to indicate the method of temperature regulation for the heating area with a low temperature state, and the high-temperature regulation strategy is used to indicate the method of temperature regulation for the heating area with a high temperature state.

[0172] Based on the temperature regulation strategy and the temperature of the heating zone, the temperature of the heating zone is regulated to obtain the target temperature.

[0173] In one possible implementation, when the temperature regulation strategy is a low-temperature regulation strategy, the regulation module 53 is specifically used for:

[0174] Determine the current power of the coil corresponding to the heating area;

[0175] The temperature difference is determined based on the temperature of the heating zone and the temperature threshold; the temperature difference is the temperature value to be adjusted in the heating zone.

[0176] Determine the target power of the coil corresponding to the heating area based on the temperature difference and the current power.

[0177] The temperature of the heating area is adjusted based on the target power to obtain the target temperature.

[0178] In one possible implementation, the adjustment module 53 is specifically used for:

[0179] Based on the mapping relationship between temperature difference and power difference, and the temperature difference value, determine the power difference value of the coil corresponding to the heating area;

[0180] Determine the target power based on the current power and the power difference.

[0181] In one possible implementation, when the temperature regulation strategy is a high-temperature regulation strategy, the regulation module 53 is specifically used for:

[0182] Determine the current power of the coil corresponding to the heating area;

[0183] The temperature difference is determined based on the temperature of the heating zone and the temperature threshold; the temperature difference is the temperature value to be adjusted in the heating zone.

[0184] Based on the current power and temperature difference, determine the target power of the coil corresponding to the heating area;

[0185] Based on the temperature difference, determine the target outflow rate and target inflow rate of the condensate in the heating zone;

[0186] The temperature of the heating zone is adjusted based on the target power, target outflow rate, and target inflow rate to obtain the target temperature.

[0187] In one possible implementation, the adjustment module 53 is specifically used for:

[0188] Based on the mapping relationship between temperature difference and rate difference, and the temperature difference value, the rate difference of condensate is determined; the rate difference of condensate is used to indicate the difference between the outflow rate and the inflow rate.

[0189] Determine the current inflow rate, current outflow rate, inflow rate range, and outflow rate range of the condensate; wherein the current inflow rate is within the inflow rate range, and the current outflow rate is within the outflow rate range.

[0190] Based on the current inflow rate, current outflow rate, inflow rate range, outflow rate range, and rate difference, determine the target outflow rate and target inflow rate; wherein, the target inflow rate is within the inflow rate range, and the target outflow rate is within the outflow rate range.

[0191] In one possible implementation, the determining module 52 is specifically used for:

[0192] For each heating zone among multiple heating zones, perform the following operations:

[0193] If the temperature of the heating zone is lower than the temperature threshold, the temperature state of the heating zone is determined to be a low-temperature state.

[0194] When the temperature of the heating zone is equal to the temperature threshold, the temperature state of the heating zone is determined to be normal.

[0195] If the temperature in the heating zone is greater than the temperature threshold, the temperature state of the heating zone is determined to be a high-temperature state.

[0196] The temperature regulating device 50 for the optical fiber drawing furnace provided in this application embodiment can execute the technical solution of the temperature regulating method for the optical fiber drawing furnace in the above method embodiment. Its implementation principle and beneficial effects are similar, and will not be described again here.

[0197] Figure 6 A schematic diagram of the structure of an electronic device provided in an embodiment of this application. The electronic device 60 includes:

[0198] At least one processor 62; and

[0199] Memory 61 is communicatively connected to at least one processor 62; wherein,

[0200] The memory 61 stores instructions that can be executed by at least one processor 62, which, when executed by at least one processor 62, causes the at least one processor 62 to perform the temperature regulation method for the optical fiber drawing furnace involved in the above method embodiments.

[0201] Optionally, the aforementioned processor can be a central processing unit (CPU), or it can be a GPU, other general-purpose processors, a digital signal processor (DSP), or an application-specific integrated circuit (ASIC), etc. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of this application can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules within the processor.

[0202] The electronic device 60 provided in this application embodiment can execute the temperature regulation method of the optical fiber drawing furnace involved in the above method embodiment. Its implementation principle and beneficial effects are similar, and will not be described again here.

[0203] This application provides a non-transitory computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, which are used to cause the computer to execute the temperature regulation method of the optical fiber drawing furnace involved in the above method embodiments.

[0204] This application provides a computer program product, including a computer program that, when executed by an electronic device, implements the temperature regulation method for the optical fiber drawing furnace involved in the above method embodiments.

[0205] This application provides a chip, which includes at least one processor. The processor is used to run program instructions to execute the temperature regulation method of the optical fiber drawing furnace involved in the above method embodiments.

[0206] This application provides a chip module that stores a computer program. When the computer program is executed by the chip module, it implements the temperature regulation method for the optical fiber drawing furnace involved in the above method embodiments.

[0207] All or part of the steps in the above method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a readable memory. When the program is executed, it performs the steps of the above method embodiments; and the aforementioned memory (storage medium) includes: read-only memory (ROM), RAM, flash memory, hard disk, solid-state drive, magnetic tape, floppy disk, optical disk, and any combination thereof.

[0208] This application describes embodiments of methods, apparatus (systems), and computer program products according to embodiments of this application with reference to flowchart illustrations and / or block diagrams. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processing unit of a general-purpose computer, special-purpose computer, embedded processor, or other programmable terminal device to produce a machine, such that the instructions, which execute via the processing unit of the computer or other programmable terminal device, generate instructions for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0209] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable terminal device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0210] These computer program instructions can also be loaded onto a computer or other programmable terminal device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable device for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0211] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this application without departing from the spirit and scope of this application. Therefore, if these modifications and variations to the embodiments of this application fall within the scope of the claims of this application and their equivalents, this application also intends to include these modifications and variations.

[0212] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0213] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A method for temperature control in an optical fiber drawing furnace, characterized in that, The method includes: The temperature of each of the multiple heating zones in the optical fiber drawing furnace is obtained; wherein each heating zone is heated by a magnetic field generated by a coil corresponding to the heating zone. The temperature state of each of the multiple heating zones is determined based on their respective temperatures; the temperature state is any one of a low temperature state, a normal state, and a high temperature state. For each of the multiple heating zones, when the temperature state of the heating zone is either the low temperature state or the high temperature state, the temperature of the heating zone is adjusted according to the temperature state and the temperature of the heating zone to obtain the target temperature of the heating zone.

2. The method according to claim 1, characterized in that, The step of adjusting the temperature of each of the plurality of heating regions, when the temperature state of the heating region is either the low temperature state or the high temperature state, according to the temperature state and temperature of the heating region, to obtain the target temperature of the heating region, includes: Based on the temperature state of the heating area, a temperature regulation strategy for the heating area is determined; the temperature regulation strategy is a low-temperature regulation strategy and a high-temperature regulation strategy; wherein, the low-temperature regulation strategy is used to indicate the method of temperature regulation for the heating area with the temperature state of low temperature, and the high-temperature regulation strategy is used to indicate the method of temperature regulation for the heating area with the temperature state of high temperature. Based on the temperature regulation strategy and the temperature of the heating area, the temperature of the heating area is regulated to obtain the target temperature.

3. The method according to claim 2, characterized in that, When the temperature regulation strategy is the low-temperature regulation strategy, adjusting the temperature of the heating area according to the temperature regulation strategy and the temperature of the heating area to obtain the target temperature includes: Determine the current power of the coil corresponding to the heating area; The temperature difference is determined based on the temperature of the heating zone and the temperature threshold; the temperature difference is the temperature value to be adjusted for the heating zone. Based on the temperature difference and the current power, determine the target power of the coil corresponding to the heating area; The temperature of the heating area is adjusted based on the target power to obtain the target temperature.

4. The method according to claim 3, characterized in that, Determining the target power of the coil corresponding to the heating area based on the temperature difference and the current power includes: Based on the mapping relationship between temperature difference and power difference, and the temperature difference value, the power difference value of the coil corresponding to the heating area is determined; The target power is determined based on the current power and the power difference.

5. The method according to claim 2, characterized in that, When the temperature regulation strategy is the high-temperature regulation strategy, the step of adjusting the temperature of the heating area according to the temperature regulation strategy and the temperature of the heating area to obtain the target temperature includes: Determine the current power of the coil corresponding to the heating area; The temperature difference is determined based on the temperature of the heating zone and the temperature threshold; the temperature difference is the temperature value to be adjusted for the heating zone. Based on the current power and the temperature difference, determine the target power of the coil corresponding to the heating area; Based on the temperature difference, the target outflow rate and target inflow rate of the condensate in the heating zone are determined; The temperature of the heating zone is adjusted according to the target power, the target outflow rate, and the target inflow rate to obtain the target temperature.

6. The method according to claim 5, characterized in that, Determining the target outflow rate and target inflow rate of the condensate in the heating region based on the temperature difference includes: Based on the mapping relationship between temperature difference and rate difference, and the temperature difference value, the rate difference value of the condensate is determined; the rate difference value of the condensate is used to indicate the difference between the target outflow rate and the target inflow rate. Determine the current inflow rate, current outflow rate, inflow rate range, and outflow rate range of the condensate; wherein the current inflow rate is within the inflow rate range, and the current outflow rate is within the outflow rate range; The target outflow rate and the target inflow rate are determined based on the current inflow rate, the current outflow rate, the inflow rate range, the outflow rate range, and the rate difference; wherein the target inflow rate is within the inflow rate range, and the target outflow rate is within the outflow rate range.

7. The method according to any one of claims 1-6, characterized in that, Determining the temperature state of each of the plurality of heating zones based on their respective temperatures includes: For each of the multiple heating areas, the following operations are performed: If the temperature of the heating zone is lower than a temperature threshold, the temperature state of the heating zone is determined to be the low-temperature state. When the temperature of the heating zone is equal to the temperature threshold, the temperature state of the heating zone is determined to be the normal state. If the temperature of the heating zone is greater than the temperature threshold, the temperature state of the heating zone is determined to be the high temperature state.

8. A temperature control device for an optical fiber drawing furnace, characterized in that, The device includes: The acquisition module is used to acquire the temperature of each of the multiple heating zones in the optical fiber drawing furnace; wherein each heating zone is heated by a magnetic field generated by a coil corresponding to the heating zone. The determining module is used to determine the temperature state of each of the plurality of heating zones based on their respective temperatures; the temperature state is any one of a low temperature state, a normal state, and a high temperature state. The adjustment module is used to adjust the temperature of each of the plurality of heating areas according to the temperature state of the heating area and the temperature of the heating area when the temperature state of the heating area is the low temperature state or the high temperature state, so as to obtain the target temperature of the heating area.

9. An electronic device, characterized in that, include: At least one processor; as well as A memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor to cause the at least one processor to perform the method of any one of claims 1 to 7.

10. A non-transitory computer-readable storage medium storing computer instructions, characterized in that, in, The computer instructions are used to cause the computer to perform the method according to any one of claims 1 to 7.

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