Control method and device of radiation tube burner of vertical annealing furnace and electronic equipment

Abstract

The application relates to the technical field of steel rolling, and discloses a control method and device for a radiation pipe burner of a vertical annealing furnace and electronic equipment. The method comprises the following steps: constructing a flue gas temperature setting model based on the thickness, width and running speed of a strip; constructing a flue gas temperature correction model based on the heat load output of a burner of a heating section of the annealing furnace and the number of burner faults; constructing a flue gas early warning model of the heating section of the annealing furnace based on the flue gas temperature setting model and the flue gas temperature correction model; determining the combustion state of the burner of the heating section of the annealing furnace based on the flue gas early warning model of the heating section of the annealing furnace, and controlling the burner of the heating section of the annealing furnace to be closed based on the combustion state of the burner of the heating section of the annealing furnace, wherein the combustion state is used to determine whether the burner of the heating section of the annealing furnace has a fault. The technical scheme disclosed by the application can control the burner to be closed based on the combustion state of the burner, so that the over-temperature service of the radiation pipe is avoided, and the service life of the radiation pipe is prolonged.

Description

TECHNICAL FIELD

[0001] The application relates to the field of steel rolling technology and discloses a control method and device for a radiation tube burner of a vertical annealing furnace and electronic equipment. BACKGROUND

[0002] The full-radiation-tube vertical annealing furnace is widely applied to a cold rolling treatment line and is a key device for affecting the annealing quality and efficiency of a strip steel. Conventional combustion control technologies include proportional combustion control technology and pulse combustion control technology.

[0003] The proportional combustion control is to control the size of the gas and air flow to change with the process temperature while keeping the burner working all the time. When the heat consumption is large or the furnace temperature is lower than the process required temperature, the gas and air flow is increased, and high-power combustion heating is performed. Conversely, the gas and air flow is reduced, and low-power combustion heating is performed. In terms of the proportional control of the gas and air, if the high-power combustion is adjusted to low-power combustion, the rising speed of the air flow is prior to the rising speed of the gas. If the low-power combustion is adjusted to high-power combustion, the falling speed of the air flow lags behind the falling speed of the gas, so as to ensure that the air always remains in an excessive state.

[0004] The pulse combustion control realizes furnace temperature control by adjusting the on-off ratio of the combustion time and is a kind of intermittent combustion mode. The control of the combustion power is to control the working and stopping of the burner and the proportion of the working and stopping time. When the temperature needs to be raised, the burner combustion time is lengthened, and the intermittent time is reduced. When the temperature needs to be lowered, the burner combustion time is reduced, and the intermittent time is lengthened. The burner is basically in a stable working state. Whether the output power of all burners of the annealing furnace is large or small, the combustion process of a single burner is always carried out under a pre-adjusted optimal air excess coefficient, so as to ensure the full and complete combustion of the gas and reduce energy waste.

[0005] Compared with the proportional control type burner, the pulse control type burner has a high failure rate due to frequent opening and closing. The failure rate of the burners of the heating section of the 1700 continuous annealing annealing furnace of Shougang Jingtang is as high as 24.28%, and the average failure rate is 14.29%. Once the problem of too low air-fuel ratio of the burner caused by valve blockage, loosening of the positioning nut or other reasons occurs, the radiation tube temperature is easily abnormally increased, and secondary combustion occurs at the smoke exhaust port of the burner in severe cases. Based on this, the application provides a control method for a radiation tube burner of a vertical annealing furnace, which can diagnose and close the burners with abnormal air-fuel ratio in time, avoid over-temperature service of the radiation tube, shorten the service life of the radiation tube, and prevent the problem of gas leakage caused by secondary combustion of the gas. SUMMARY

[0006] The application relates to the technical field of steel rolling, and discloses a control method and device for a radiation pipe burner of a vertical annealing furnace and electronic equipment. The method can avoid over-temperature service of the radiation pipe, shorten the service life of the radiation pipe, and prevent problems such as leakage of a flue gas pipeline caused by secondary combustion of fuel gas.

[0007] Other characteristics and advantages of the present application will become apparent from the following detailed description, or will be learned by practice of the present application.

[0008] According to a first aspect of an embodiment of the present application, a control method for a radiation pipe burner of a vertical annealing furnace is provided. The method comprises: constructing a flue gas temperature setting model based on a strip thickness, a strip width and a strip running speed; constructing a flue gas temperature correction model based on a heat load output of a burner of a heating section of the annealing furnace and a number of burner faults; constructing a flue gas early warning model of the heating section of the annealing furnace based on the flue gas temperature setting model and the flue gas temperature correction model; determining a combustion state of the burner of the heating section of the annealing furnace based on the flue gas early warning model of the heating section of the annealing furnace, and controlling the burner of the heating section of the annealing furnace to be closed based on the combustion state of the burner of the heating section of the annealing furnace, wherein the combustion state is used to determine whether the burner of the heating section of the annealing furnace has a fault.

[0009] In an embodiment of the present application, based on the foregoing scheme, the flue gas temperature setting model comprises:

[0010]

[0011] wherein, WGT HL is a flue gas temperature early warning reference value under current furnace conditions, and the unit is ℃; HD F is a theoretical heat load output of a heating section of different specifications, and the unit is %; thk F is an actual thickness of a strip of the heating section, and the unit is mm; w F is an actual width of the strip of the heating section, and the unit is mm; v F is a running speed of the strip in the furnace, and the unit is m / min; w ref is a design reference width of the annealing furnace, and the unit is mm; StripT RTF is a heating section annealing temperature setting value, and the unit is ℃; v FHL is a design maximum speed of the annealing furnace, and the unit is m / min; a ref is a reference thickness change rate with the annealing temperature, and the unit is mm / ℃; b refThe base thickness of the strip steel at an annealing temperature of 0°C, in mm.

[0012] In an embodiment of the present application, based on the foregoing scheme, the flue gas temperature correction model comprises:

[0013] ,

[0014] ,

[0015]

[0016] wherein, WGT mn_cor_HL is the temperature warning temperature correction value of the nth thermocouple of the mth layer, in °C; k mode is the maximum temperature deviation corresponding to different heat load output modes, in °C; HD WG is the average heat load output at the flue gas temperature measurement position of each layer, in %; AVGHD WG_n is the heat load output of the nth measured flue gas thermocouple, in %; WGTf mn_HL is the heat load output of the nth measured flue gas thermocouple, in %; HD j_cor is the corrected heat load output of the jth row of burners in the heating section of the annealing furnace, in %; HD j is the heat load output of the jth row of burners in the heating section of the annealing furnace, in %; N fault_j is the number of faults of the jth row of burners in the heating section of the annealing furnace, in units; N total_j is the total number of burners in the jth row of the heating section of the annealing furnace, in units; j represents the row number of the burners; J is the total number of rows in the heating section of the annealing furnace; n is the row number of the thermocouple in each layer.

[0017] In an embodiment of the present application, based on the foregoing scheme, the flue gas temperature correction model further comprises:

[0018] ,

[0019]

[0020] wherein, HD WG is the average heat load output at the flue gas temperature measurement position, in %; N TCThe average number of single-sided thermocouples per layer is in units of pieces. WGTf mn_HL The temperature warning temperature correction coefficient of the nth thermocouple is dimensionless. AVGHD WG_n The heat load output of the nth flue gas temperature measurement is in units of %.

[0021] In an embodiment of the present application, based on the foregoing scheme, the flue gas warning model of the heating section of the annealing furnace comprises:

[0022]

[0023] Wherein, WGT mn_HL The warning reference value of the nth thermocouple of the mth layer is in units of ℃. WGT mn_cor_HL The temperature warning temperature correction value of the nth thermocouple of the mth layer is in units of ℃. WGT HL The flue gas temperature warning reference value under the current furnace condition is in units of ℃.

[0024] In an embodiment of the present application, based on the foregoing scheme, the determination of the combustion state of the burner of the heating section of the annealing furnace based on the flue gas warning model of the heating section of the annealing furnace comprises: for each thermocouple of the heating section of the annealing furnace, obtaining the actual temperature measured by the thermocouple; determining the warning reference value of the thermocouple based on the flue gas warning model of the heating section of the annealing furnace; if the actual temperature is less than or equal to the sum of the warning reference value and the flue gas high-temperature alarm threshold, determining that the combustion state of the burner corresponding to the thermocouple is a normal combustion state.

[0025] In an embodiment of the present application, based on the foregoing scheme, the method further comprises: if the actual temperature exceeds the sum of the warning reference value and the flue gas high-temperature alarm threshold, the thermocouple triggers a flue gas high-temperature warning prompt to remind that the flue gas temperature of the heating section of the annealing furnace is too high; if the thermocouple triggers the flue gas high-temperature warning prompt and none of the other thermocouples with a distance from the flue gas collecting chamber exceeding the distance of the thermocouple from the flue gas collecting chamber triggers the flue gas high-temperature warning prompt, determining that the combustion state of the burner corresponding to the thermocouple is an overheating combustion state, and the other thermocouples are any one of the thermocouples on the same layer and on the same side of the heating section of the annealing furnace as the thermocouple.

[0026] In an embodiment of the present application, based on the foregoing scheme, the control of the annealing furnace heating section burner to close includes: if the combustion state of the annealing furnace heating section burner is a normal combustion state, controlling the annealing furnace heating section burner to open; if the combustion state of the annealing furnace heating section burner is an overheating combustion state, controlling the annealing furnace heating section burner to close.

[0027] According to a second aspect of the embodiments of the present application, a control device of a vertical annealing furnace radiant tube burner is provided, the device comprising: a first construction unit configured to construct a flue gas temperature setting model based on a strip thickness, a strip width and a strip running speed; a second construction unit configured to construct a flue gas temperature correction model based on a heat load output of an annealing furnace heating section burner and a number of burner failures; a third construction unit configured to construct an annealing furnace heating section flue gas early warning model based on the flue gas temperature setting model and the flue gas temperature correction model; and a control unit configured to determine a combustion state of the annealing furnace heating section burner based on the annealing furnace heating section flue gas early warning model, and control the annealing furnace heating section burner to close based on the combustion state of the annealing furnace heating section burner, the combustion state being used to determine whether the annealing furnace heating section burner has failed.

[0028] According to a third aspect of the embodiments of the present application, an electronic device is provided, comprising one or more processors and one or more memories, the one or more memories storing at least one program code, the at least one program code being loaded and executed by the one or more processors to implement the control method of a vertical annealing furnace radiant tube burner as described in any of the above embodiments.

[0029] In the technical scheme proposed in the present application, a flue gas temperature setting model is constructed based on a strip thickness, a strip width and a strip running speed, a flue gas temperature correction model is constructed through a heat load output of an annealing furnace heating section burner and a number of burner failures, an annealing furnace heating section flue gas early warning model is constructed through the flue gas temperature setting model and the flue gas temperature correction model, a combustion state of the annealing furnace heating section burner is determined according to the annealing furnace heating section flue gas early warning model, and the annealing furnace heating section burner is controlled to close according to the combustion state of the annealing furnace heating section burner, the combustion state being used to determine whether the annealing furnace heating section burner has failed. The technical scheme proposed in the present application can diagnose and close a burner with an abnormal air-fuel ratio in time, so as to avoid over-temperature service of the radiant tube and shorten the service life of the radiant tube, and prevent the problem of flue gas pipe leakage caused by secondary combustion of fuel gas.

[0030] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and are not limiting to the present application. BRIEF DESCRIPTION OF DRAWINGS

[0031] The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate embodiments consistent with the present application and, together with the description, further serve to explain the principles of the application. It is to be expressly understood, however, that the drawings are included herein for illustrative purposes only and do not represent a limitation of the application. In the drawings, where like numerals in one or more of the several views represent similar elements:

[0032] Figure 1 A flow chart of a control method of a radiant tube burner of a vertical annealing furnace in an embodiment of the present application is shown;

[0033] Figure 2 A schematic diagram of a heating section radiant tube and a temperature measuring thermocouple of a continuous annealing furnace in one specific embodiment of the present application is shown;

[0034] Figure 3 A graph showing the variation of a flue gas temperature pre-warning reference value under different furnace conditions in one specific embodiment of the present application is shown;

[0035] Figure 4 A graph showing the variation of a flue gas temperature pre-warning correction value under different furnace conditions in one specific embodiment of the present application is shown;

[0036] Figure 5 A graph showing the variation of a thermocouple pre-warning reference value under different furnace conditions in one specific embodiment of the present application is shown;

[0037] Figure 6 A control flow chart of a flue gas temperature pre-warning of a first layer operation side burner of a heating section in one specific embodiment of the present application is shown;

[0038] Figure 7 A block diagram of a control device of a radiant tube burner of a vertical annealing furnace in an embodiment of the present application is shown;

[0039] Figure 8 A structural schematic diagram of a computer system of an electronic device suitable for implementing an embodiment of the present application is shown. DETAILED DESCRIPTION

[0040] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations may, however, be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the inventive aspects to those skilled in the art. Like reference numerals may refer to like elements throughout.

[0041] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the application can be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the application.

[0042] The flowcharts shown in the drawings are merely illustrative, and do not necessarily include all the contents and operations / steps, nor are they necessarily executed in the order described. For example, some operations / steps can be further decomposed, and some operations / steps can be combined or partially combined, so the actual execution order can be changed according to actual conditions.

[0043] The block diagrams shown in the drawings are merely functional entities, and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software form, or in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0044] It should be noted that "multiple" referred to herein means two or more. The "and / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent the three cases of A alone, A and B together, and B alone. The character " / " generally represents that the associated objects before and after are in an "or" relationship.

[0045] It should be noted that the terms "first", "second", and the like in the specification and claims of the application and the above-described drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the objects thus used can be interchanged under appropriate circumstances, so that the embodiments of the application described herein can be implemented in an order other than that illustrated or described.

[0046] The implementation details of the technical solutions of the embodiments of the application are described in detail as follows:

[0047] Figure 1 A flowchart of a control method of a radiation tube burner of a vertical annealing furnace in an embodiment of the application is shown.

[0048] As shown in Figure 1 The control method of the radiation tube burner of the vertical annealing furnace at least includes steps 110 to 170.

[0049] The implementation details of the technical solutions of the embodiments of the application are described in detail as follows: Figure 1The steps 110 to 170 are described in detail as follows:

[0050] In step 110, a flue gas temperature setting model is constructed based on the strip thickness, strip width and strip running speed.

[0051] With reference back to Figure 1 In step 130, a flue gas temperature correction model is constructed based on the heat load output of the heating section burners of the annealing furnace and the number of burner failures.

[0052] With reference back to Figure 1 In step 150, an annealing furnace heating section flue gas early warning model is constructed based on the flue gas temperature setting model and the flue gas temperature correction model.

[0053] With reference back to Figure 1 In step 170, the combustion state of the heating section burners of the annealing furnace is determined based on the annealing furnace heating section flue gas early warning model, and the heating section burners of the annealing furnace are controlled to be closed based on the combustion state of the heating section burners of the annealing furnace, the combustion state being used to determine whether the heating section burners of the annealing furnace have failed.

[0054] In an embodiment of the present application, the flue gas temperature setting model comprises:

[0055]

[0056] wherein, WGT HL is the flue gas temperature early warning reference value under the current furnace condition, in ℃; HD F is the theoretical heat load output of the heating section of different specifications, in %; thk F is the actual thickness of the strip in the heating section, in mm; w F is the actual width of the strip in the heating section, in mm; v F is the in-furnace running speed of the strip, in m / min; w ref is the design reference width of the annealing furnace, in mm; StripT RTF is the annealing temperature setting value of the heating section, in ℃; v FHL is the design maximum speed of the annealing furnace, in m / min; a ref is the rate of change of the reference thickness with the annealing temperature, in mm / ℃; b ref is the reference thickness of the strip when the annealing temperature is 0 ℃, in mm.

[0057] In the present application, different annealing furnace conditions can be formed according to different strip steel production conditions such as strip steel thickness, strip steel width, strip steel running speed, etc., the strip steel production conditions under the current furnace condition are obtained, and the flue gas temperature early warning benchmark value under the current furnace condition is determined based on the strip steel production conditions under the current furnace condition.

[0058] In an embodiment of the present application, the flue gas temperature correction model comprises:

[0059]

[0060]

[0061]

[0062] wherein, WGT mn_cor_HL is the temperature correction value of the nth thermocouple of the mth layer, with the unit of ℃; k mode is the maximum temperature deviation corresponding to different heat load output modes, with the unit of ℃; HD WG is the average heat load output at the flue gas temperature measurement position of each layer, with the unit of %; AVGHD WG_n is the heat load output of the nth flue gas measuring thermocouple, with the unit of %; WGTf mn_HL is the temperature correction coefficient of the nth flue gas measuring thermocouple, dimensionless; HD j_cor is the corrected heat load output of the jth column burner of the heating section of the annealing furnace, with the unit of %; HD j is the heat load output of the jth column burner of the heating section of the annealing furnace, with the unit of %; N fault_j is the number of faults of the jth column burner of the heating section of the annealing furnace, with the unit of pieces; N total_j is the total number of the jth column burner of the heating section of the annealing furnace, with the unit of pieces; j represents the column number of the burner; J is the total number of columns of the heating section of the annealing furnace; n is the column number of the thermocouple of each layer.

[0063] In the present application, the heat load output mode at least includes proportional mode, narrow strip steel mode, normal mode and stair climbing mode, wherein the maximum temperature deviation corresponding to the proportional mode is 1 ℃, the maximum temperature deviation corresponding to the narrow strip steel and normal mode is in the range of 1-1.2 ℃, and the maximum temperature deviation corresponding to the stair climbing mode is in the range of 1.1-1.5 ℃.

[0064] ​​In an embodiment of the present application, the flue gas temperature correction model further comprises:

[0065] ,

[0066]

[0067] wherein, HD WG is the average heat load output at the flue gas temperature measurement point, in %; N TC is the average number of single-sided thermocouples per layer, in pieces; WGTf mn_HL is the temperature correction coefficient of the nth thermocouple temperature warning, dimensionless; AVGHD WG_n is the heat load output at the nth flue gas temperature measurement point, in %.

[0068] In the present application, the calculation formula of the temperature correction value of the nth thermocouple temperature warning of the mth layer is as follows:

[0069]

[0070] In an embodiment of the present application, the flue gas warning model of the heating section of the annealing furnace comprises:

[0071]

[0072] wherein, WGT mn_HL is the warning reference value of the nth thermocouple of the mth layer, in ℃; WGT mn_cor_HL is the temperature correction value of the nth thermocouple temperature warning of the mth layer, in ℃; WGT HL is the flue gas temperature warning reference value under the current furnace condition, in ℃.

[0073] In the present application, the warning reference value of the thermocouple is used to determine whether the burner of the heating section of the annealing furnace has an abnormal air-fuel ratio or other burner faults.

[0074] In the present application, according to the temperature correction value of the nth thermocouple temperature warning of the mth layer and the flue gas temperature warning reference value under the current furnace condition, the warning reference value of the nth thermocouple of the mth layer can be determined, and the calculation formula of the warning reference value of the nth thermocouple of the mth layer is as follows:

[0075]

[0076] In an embodiment of the present application, the determination of the combustion state of the burner of the heating section of the annealing furnace based on the flue gas early warning model of the heating section of the annealing furnace comprises: obtaining the actual temperature measured by each thermocouple of the heating section of the annealing furnace; determining the early warning reference value of the thermocouple based on the flue gas early warning model of the heating section of the annealing furnace; and determining that the combustion state of the burner corresponding to the thermocouple is normal if the actual temperature is less than or equal to the sum of the early warning reference value and the flue gas high-temperature alarm threshold.

[0077] In the present application, the actual temperature measured by each thermocouple of the heating section of the annealing furnace is obtained, the sum of the early warning reference value and the flue gas high-temperature alarm threshold of the thermocouple is calculated, and the combustion state of the burner corresponding to the thermocouple is determined to be normal if the sum of the early warning reference value and the flue gas high-temperature alarm threshold of the thermocouple exceeds the actual temperature measured by the thermocouple, which indicates that the burner corresponding to the thermocouple is working normally and no burner failure such as abnormal air-fuel ratio occurs.

[0078] In the present application, a flue gas high-temperature early warning threshold can be set, the sum of the early warning reference value and the flue gas high-temperature early warning threshold of the thermocouple is calculated, and if the actual temperature measured by the thermocouple exceeds the sum of the early warning reference value and the flue gas high-temperature early warning threshold of the thermocouple, the staff is reminded that the burner corresponding to the thermocouple may fail and problems such as flue gas pipeline damage may occur if the burner corresponding to the thermocouple continues to work in the existing state.

[0079] In an embodiment of the present application, the method further comprises: if the actual temperature exceeds the sum of the early warning reference value and the flue gas high-temperature alarm threshold, the thermocouple triggers a flue gas high-temperature early warning prompt to remind that the flue gas temperature of the heating section of the annealing furnace is too high; and if the thermocouple triggers the flue gas high-temperature early warning prompt and none of the other thermocouples with a distance from the flue gas collecting chamber exceeding the distance of the thermocouple from the flue gas collecting chamber triggers the flue gas high-temperature early warning prompt, it is determined that the combustion state of the burner corresponding to the thermocouple is overheated combustion, and the other thermocouples are any one of the thermocouples on the same layer and the same side of the heating section of the annealing furnace as the thermocouple.

[0080] In the present application, if the actual temperature measured by the thermocouple exceeds the sum of the pre-warning reference value and the flue gas high temperature alarm threshold value, the thermocouple triggers a flue gas high temperature pre-warning prompt, and whether other thermocouples arranged at the same layer and the same side as the thermocouple in the heating section of the annealing furnace trigger a flue gas high temperature pre-warning prompt can be determined. All thermocouples at the same layer and the same side can be numbered according to the distance from the flue gas collecting chamber from small to large, that is, the smaller the distance from the flue gas collecting chamber, the smaller the number of the thermocouple. Through the number, the corresponding thermocouple can be quickly located, and the corresponding burner of each thermocouple can be quickly located. If the thermocouple triggers a flue gas high temperature pre-warning prompt, and none of the other thermocouples with a distance from the flue gas collecting chamber exceeding the distance from the flue gas collecting chamber of the thermocouple triggers a flue gas high temperature pre-warning prompt, it is determined that the combustion state of the corresponding burner of the thermocouple is an overheating combustion state, and the other thermocouples are any one of the thermocouples arranged at the same layer and the same side as the thermocouple in the heating section of the annealing furnace.

[0081] In an embodiment of the present application, the control of the heating section burner of the annealing furnace to close based on the combustion state of the heating section burner of the annealing furnace includes: if the combustion state of the heating section burner of the annealing furnace is a normal combustion state, the heating section burner of the annealing furnace is controlled to open; and if the combustion state of the heating section burner of the annealing furnace is an overheating combustion state, the heating section burner of the annealing furnace is controlled to close.

[0082] In the present application, if the combustion state of the heating section burner of the annealing furnace is an overheating combustion state, the air valve and the gas valve of the heating section burner of the annealing furnace can be remotely controlled by the control system to close.

[0083] In the present application, if the duration of the closing of the heating section burner of the annealing furnace exceeds a burner closing time threshold value, the heating section burner of the annealing furnace is controlled to reopen, the burner closing time threshold value ranges from 4 to 12 hours, and the burner closing time threshold value can be set according to actual needs.

[0084] In order for those skilled in the art to more easily understand the present application, the following will be described with reference to the accompanying drawings Figure 2~6 The present application will be described in detail with reference to a specific embodiment.

[0085] Figure 2 A schematic diagram of the heating section radiant tube of the continuous annealing furnace and the temperature measuring thermocouple in one specific embodiment of the present application is shown.

[0086] Figure 3 A graph showing the change of the flue gas temperature pre-warning reference value under different furnace conditions in one specific embodiment of the present application is shown.

[0087] Figure 4The diagram shows the variation of the flue gas temperature warning correction value under different furnace conditions in a specific embodiment of this application.

[0088] Figure 5 The diagram shows the variation of thermocouple warning reference values ​​under different furnace conditions in a specific embodiment of this application.

[0089] Figure 6 The diagram illustrates the control flow chart after a flue gas temperature warning is issued for the first layer operating side burner of the heating section in a specific embodiment of this application.

[0090] The Shougang Jingtang 1700 continuous annealing furnace heating section has a total of 7 layers and 25 rows of burners. Each layer of flue gas duct is equipped with 12 temperature measuring thermocouples, with 6 on the operating side and 6 on the drive side, for a total of 84 thermocouples. Figure 2 As shown. The production parameters for the heating section of the continuous annealing furnace are as follows:

[0091] The value of m, the layer number of the thermocouple, ranges from 1 to 7; the value of n, the column number of the thermocouple, ranges from 1 to 22; the average number of NTCs per burner on each side of each layer is 6; the value of i, the layer number of the burner, ranges from 1 to 7; the value of j, the column number of the burner, ranges from 1 to 25; the value of J, the column number of the heating section, is 25; the maximum design speed of the annealing furnace is... v FHL The value is 420 m / min; the rate of change of the reference thickness with annealing temperature a ref The value is -0.00196 mm / ℃; the reference thickness of the strip at an annealing temperature of 0℃. b ref The value is 2.23514 mm; furnace zone speed v F The value is 100 m / min, and the annealing temperature is... StripT RTF The value is 800℃, and the maximum temperature deviation corresponds to different heat load output modes. k mode The value for the "proportional" mode is 1℃, the value for the "narrow strip steel" and "normal" modes is 1.2℃, and the value for the "climbing stairs" mode is 1.3℃.

[0092] The relationship between the flue gas temperature warning benchmark value and the theoretical heat load output of the heating section is shown in Table 1, and the relationship between the temperature correction coefficient of the flue gas thermocouple and its average heat load is shown in Table 2.

[0093] annealing temperature StripT RTF Under conditions of 800℃, by using a flue gas temperature setting model, early warning values ​​for flue gas temperatures of different specifications can be obtained, such as... Figure 3 As shown. Among them,Figure 3 (a) Figure 3 (b) Figure 3 (c) Figure 3 (d) represents the furnace zone speed. v F The warning values ​​for flue gas temperatures at speeds of 100 m / min, 150 m / min, 200 m / min, and 250 m / min are shown. The warning temperature gradually increases with increasing thickness, and the plateau area gradually increases with increasing speed. This is because the heating capacity of thicker flue gas already reaches 100%, thus the warning temperature remains constant.

[0094] furnace speed v F 100 m / min, annealing temperature StripT RTF Maximum temperature deviation corresponding to different heat load output modes under 800℃ conditions. k mode The value is 1℃ for the "proportional" mode, 1.2℃ for the "narrow strip steel" and "normal" modes, and 1.3℃ for the "climbing stairs" mode. The thermocouple temperature warning temperature correction value can be obtained through the flue gas temperature correction model. WGT mn_cor_HL ,like Figure 4 As shown. Among them Figure 4 (a) is the "narrow strip steel" mode. Figure 4 (b) is the "normal" mode. Figure 4 (c) is the “climbing stairs - front end” mode, and 4(d) is the “climbing stairs - end” mode.

[0095] furnace speed v F 100 m / min, annealing temperature StripT RTF The maximum temperature deviation is 800℃, with the heat load output mode set to "narrow strip steel" mode. k mode With a value of 1.2℃, the reference value for flue gas thermocouple temperature early warning can be obtained through the flue gas early warning model of the annealing furnace heating section. WGT mn_HL ,like Figure 5 As shown. Among them Figure 5 (a) is the first flue gas temperature thermocouple (the first one); Figure 5 (b) is the second flue gas thermocouple in the sixth column. Figure 5 (c) is the 10th column flue gas temperature thermocouple (the 3rd one); Figure 5 (d) is the 14th column flue gas temperature thermocouple (the 4th one); Figure 5 (e) is the 18th column of flue gas temperature thermocouple (the 5th one); Figure 5(f) is the 22nd column of the temperature of the cigarette thermocouple (6th).

[0096] The following is an example of the first layer of the operating side burner of the heating section of the annealing furnace. In the case of triggering the high temperature of the flue gas by the thermocouple, what conditions need to be met to close the corresponding burner of the thermocouple, such as Figure 6

[0097] The first to fifth column burner closing condition: thermocouple TO 101 triggering the warning, the rest of the thermocouples TO 106 , TO 110 , TO 114 , TO 118 , TO 122 No warning is triggered;

[0098] The sixth to ninth column burner closing condition: thermocouple TO 106 triggering the warning, the rest of the thermocouples TO 110 , TO 114 , TO 118 , TO 122 No warning is triggered;

[0099] The tenth to thirteenth column burner closing condition: thermocouple TO 110 triggering the warning, thermocouple TO 114 , thermocouple TO 118 , thermocouple TO 122 No warning is triggered;

[0100] The fourteenth to seventeenth column burner closing condition: thermocouple TO 114 triggering the warning, thermocouple TO 118 , T thermocouple O 122 No warning is triggered;

[0101] The eighteenth to twenty-first column burner closing condition: thermocouple TO 118 triggering the warning, thermocouple TO 122 No warning is triggered;

[0102] The twenty-second to twenty-fifth column burner closing condition: thermocouple​TO 122 Triggering an early warning.

[0103]

[0104] Table 1

[0105]

[0106] Table 2

[0107] In one or more technical solutions provided in the embodiments of the present application, at least the following technical effects or advantages are achieved:

[0108] The present application provides a control method for a vertical annealing furnace radiation pipe burner, which can diagnose and close the burner with abnormal air-fuel ratio in time, avoid over-temperature service of the radiation pipe, shorten the service life of the radiation pipe, and prevent the problem of gas secondary combustion causing leakage of the flue gas pipeline.

[0109] The device embodiments of the present application are introduced below, which can be used to execute the control method for the vertical annealing furnace radiation pipe burner of the first aspect of the above-mentioned embodiments of the present application. For details not disclosed in the device embodiments of the present application, please refer to the embodiments of the control method for the vertical annealing furnace radiation pipe burner of the first aspect of the above-mentioned embodiments of the present application.

[0110] Figure 7 A block diagram of the control device for the vertical annealing furnace radiation pipe burner in the embodiments of the present application is shown.

[0111] As shown in Figure 7 The control device 700 for the vertical annealing furnace radiation pipe burner in the embodiments of the present application includes a first construction unit 701, a second construction unit 702, a third construction unit 703, and a control unit 704.

[0112] The first construction unit 701 is configured to construct a flue gas temperature setting model based on the strip thickness, the strip width, and the strip running speed; the second construction unit 702 is configured to construct a flue gas temperature correction model based on the heat load output of the burner of the heating section of the annealing furnace and the number of burner failures; the third construction unit 703 is configured to construct a flue gas early warning model of the heating section of the annealing furnace based on the flue gas temperature setting model and the flue gas temperature correction model; and the control unit 704 is configured to determine the combustion state of the burner of the heating section of the annealing furnace based on the flue gas early warning model of the heating section of the annealing furnace, and control the burner of the heating section of the annealing furnace to be closed based on the combustion state of the burner of the heating section of the annealing furnace, wherein the combustion state is used to determine whether the burner of the heating section of the annealing furnace has a failure.

[0113] In some embodiments of the present application, based on the foregoing scheme, the first construction unit 701 is configured to:

[0114]

[0115] wherein, WGT HL is the temperature warning reference value of flue gas under the current furnace condition, unit: ℃; HD F is the theoretical heat load output of different specifications of heating section, unit: %; thk F is the actual thickness of the strip in the heating section, unit: mm; w F is the actual width of the strip in the heating section, unit: mm; v F is the running speed of the strip in the furnace, unit: m / min; w ref is the design reference width of the annealing furnace, unit: mm; StripT RTF is the annealing temperature set value of the heating section, unit: ℃; v FHL is the design maximum speed of the annealing furnace, unit: m / min; a ref is the rate of change of the reference thickness with the annealing temperature, unit: mm / ℃; b ref is the reference thickness of the strip when the annealing temperature is 0 ℃, unit: mm.

[0116] In some embodiments of the present application, based on the foregoing scheme, the second construction unit 702 is configured to:

[0117] ,

[0118] ,

[0119]

[0120] wherein, WGT mn_cor_HL is the temperature warning temperature correction value of the nth thermocouple of the mth layer, unit: ℃; k mode is the maximum temperature deviation corresponding to different heat load output modes, unit: ℃; HD WG is the average heat load output at the flue gas temperature measurement position of each layer, unit: %; AVGHD WG_n is the heat load output of the nth flue gas thermocouple, unit: %; WGTf mn_HL is the heat load output of the nth flue gas thermocouple, unit: %; HD j_corThe corrected heat load output of the jth column of the heating section of the annealing furnace, unit: %; HD j The heat load output of the jth column of the heating section of the annealing furnace, unit: %; N fault_j The number of faults of the jth column of the heating section of the annealing furnace, unit: pieces; N total_j The total number of the jth column of the heating section of the annealing furnace, unit: pieces; j The column number where the burner is located; J The total number of columns of the heating section of the annealing furnace; n The column number where each layer of thermocouple is located.

[0121] In some embodiments of the present application, based on the foregoing scheme, the second construction unit 702 is further configured to:

[0122] ,

[0123]

[0124] Wherein, HD WG The average heat load output at the flue gas temperature measurement position, unit: %; N TC The average number of single-sided thermocouples per layer, unit: pieces; WGTf mn_HL The nth thermocouple temperature warning temperature correction coefficient, dimensionless; AVGHD WG_n The heat load output at the nth flue gas temperature measurement position, unit: %.

[0125] In some embodiments of the present application, based on the foregoing scheme, the third construction unit 703 is configured to:

[0126]

[0127] Wherein, WGT mn_HL The nth thermocouple warning reference value of the mth layer, unit: ℃; WGT mn_cor_HL The nth thermocouple temperature warning temperature correction value of the mth layer, unit: ℃; WGT HL The flue gas temperature warning reference value under the current furnace condition, unit: ℃.

[0128] In some embodiments of the present application, based on the foregoing scheme, the control unit 704 is configured to: for each thermocouple of the annealing furnace heating section, obtain an actual temperature measured by the thermocouple; determine a pre-warning reference value of the thermocouple based on the flue gas pre-warning model of the annealing furnace heating section; and if the actual temperature is less than or equal to the sum of the pre-warning reference value and the flue gas high-temperature alarm threshold, determine that the combustion state of the burner corresponding to the thermocouple is a normal combustion state.

[0129] In some embodiments of the present application, based on the foregoing scheme, the control unit 704 is further configured to: if the actual temperature exceeds the sum of the pre-warning reference value and the flue gas high-temperature alarm threshold, trigger a flue gas high-temperature pre-warning prompt of the thermocouple to remind that the flue gas temperature of the annealing furnace heating section is too high; and if the thermocouple triggers the flue gas high-temperature pre-warning prompt and none of the other thermocouples with a distance to the flue gas collecting chamber exceeding the distance of the thermocouple to the flue gas collecting chamber triggers the flue gas high-temperature pre-warning prompt, determine that the combustion state of the burner corresponding to the thermocouple is an overheated combustion state, the other thermocouples being any one of the thermocouples at the same layer and on the same side of the annealing furnace heating section as the thermocouple.

[0130] In some embodiments of the present application, based on the foregoing scheme, the control unit 704 is further configured to: if the combustion state of the burner of the annealing furnace heating section is a normal combustion state, control the burner of the annealing furnace heating section to be opened; and if the combustion state of the burner of the annealing furnace heating section is an overheated combustion state, control the burner of the annealing furnace heating section to be closed.

[0131] The present application also provides a computer program product, which comprises computer instructions stored in a computer readable storage medium and adapted to be read and executed by a processor to enable a computer device having the processor to perform the control method of the vertical annealing furnace radiant tube burner as described in the above embodiments.

[0132] The present application also provides a computer readable medium, which can be included in an electronic device or exist separately without being assembled into an electronic device. The computer readable storage medium stores at least one program code, which is loaded and executed by a processor to implement the control method of the vertical annealing furnace radiant tube burner as described in the above embodiments.

[0133] The present application also provides an electronic device, which comprises one or more processors and one or more memories, and the one or more memories store at least one program code, which is loaded and executed by the one or more processors to implement the control method of the vertical annealing furnace radiant tube burner as described in any of the above embodiments.

[0134] Figure 8 A structural diagram of a computer system of an electronic device suitable for implementing the embodiments of the present application is shown.

[0135] It should be noted that, Figure 8 The computer system 800 of the electronic device shown is only an example and should not impose any limitation on the functions and usage range of the embodiments of the present application.

[0136] As Figure 8 shown, the computer system 800 includes a central processing unit (CPU) 801 which can perform various appropriate actions and processes according to programs stored in a read-only memory (ROM) 802 or loaded from a storage section 808 into a random access memory (RAM) 803, such as performing the methods described in the above embodiments. Various programs and data required for system operation are also stored in the RAM 803. The CPU 801, the ROM 802, and the RAM 803 are connected to each other through a bus 804. An input / output (I / O) interface 805 is also connected to the bus 804.

[0137] The following components are connected to the I / O interface 805: an input section 806 including a keyboard, a mouse, etc.; an output section 807 including a display such as a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; the storage section 808 including a hard disk, etc.; and a communication section 809 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 809 performs communication processing via a network such as the Internet. A drive 810 is also connected to the I / O interface 805 as necessary. A removable recording medium 811 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc. is attached to the drive 810 as necessary, so that a computer program read therefrom is installed into the storage section 808 as necessary.

[0138] In particular, the processes described above with reference to the flow charts can be implemented as a computer software program in accordance with the embodiments of the present application. For example, an embodiment of the present application includes a computer program product comprising a computer program carried on a computer readable medium, the computer program containing program code for executing the methods illustrated by the flow charts. In such an embodiment, the computer program can be downloaded and installed from a network via the communication section 809, and / or installed from the removable media 811. When the computer program is executed by the central processing unit (CPU) 801, various functions defined in the system of the present application are executed.

[0139] It should be noted that the computer readable medium shown in the embodiments of the present application can be a computer readable signal medium or a computer readable storage medium or any combination of the two. The computer readable storage medium may, for example, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or apparatus, or any combination of the above. More specific examples of the computer readable storage medium can include, but are not limited to, an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (Compact Disc Read-Only Memory, CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, the computer readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, device or apparatus. In the present application, the computer readable signal medium can include a data signal carried in a baseband or as a part of a carrier wave, which carries computer readable program code. Such a propagated data signal can take many forms, including but not limited to an electromagnetic signal, an optical signal or any suitable combination of the above. The computer readable signal medium can also be any computer readable medium other than the computer readable storage medium that can send, propagate or transmit the program for use by or in connection with an instruction execution system, device or apparatus. The program code contained on the computer readable medium can be transmitted by any suitable medium, including but not limited to wireless, wired, or the like, or any suitable combination of the above.

[0140] The flow diagrams and the block diagrams in the drawings are illustrations of architectures, functionalities, and operations of possible implementations of systems, methods, and computer program products according to various embodiments of present application. It will be understood that each block of the flow diagrams and the block diagrams, and combinations of blocks in the flow diagrams or the block diagrams, can be implemented by

[0141] The units described in the embodiments of the present application can be implemented by software, or by hardware, or by a combination of software and hardware. The units described can be located in a single device or distributed over several devices.

[0142] It should be noted that although several modules or units of the device for action execution are mentioned in the foregoing detailed description, such a division is not mandatory. Indeed, according to an embodiment of the application, the features and functionalities of two or more modules or units described above can be embodied in one module or unit. Conversely, the features and functionalities of one module or unit described above can be further divided into several modules or units.

[0143] From the above description of the embodiments, it is easy for those skilled in the art to understand that the example embodiments described herein can be implemented by software, or by a combination of software and necessary hardware. Therefore, the technical solutions according to the embodiments of the present application can be embodied in the form of a software product. The software product can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash disk, a mobile hard disk, or the like) or a network, and includes a number of instructions to make a computing device (which can be a personal computer, a server, a touch terminal, or a network device, etc.) execute the methods according to the embodiments of the present application.

[0144] Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the embodiments disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the application following the general principles thereof and including such departures from the present disclosure as come within known use or custom in the art.

[0145] Furthermore, the above-described diagrams are merely schematic illustrations of the processes included in the method according to the exemplary embodiments of the present application, and are not intended for limiting purposes. It is readily understood that the processes shown in the above-described diagrams do not indicate or limit the time sequence of these processes. In addition, it is also readily understood that these processes can be executed, for example, synchronously or asynchronously in a plurality of modules.

[0146] It is to be understood that the present application is not limited to the precise construction described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims

1. A method for controlling the radiant tube burner of a vertical annealing furnace, characterized in that, The method includes: A flue gas temperature setting model is constructed based on strip thickness, strip width, and strip running speed; Based on the heat load output and burner failure number of the burners in the heating section of the annealing furnace, a flue gas temperature correction model is constructed. Based on the flue gas temperature setting model and the flue gas temperature correction model, an early warning model for flue gas in the heating section of the annealing furnace is constructed. Based on the flue gas early warning model of the heating section of the annealing furnace, the combustion state of the burners in the heating section of the annealing furnace is determined, and based on the combustion state of the burners in the heating section of the annealing furnace, the burners in the heating section of the annealing furnace are controlled to close. The combustion state is used to determine whether the burners in the heating section of the annealing furnace have malfunctioned. The flue gas temperature setting model includes: in, WGT HL This is the baseline value for flue gas temperature warning under the current furnace conditions, in °C. HD F The theoretical heat load output for heating sections of different specifications is expressed in % (%). thk F This refers to the actual thickness of the strip steel in the heating section, in mm. w F This refers to the actual width of the strip in the heating section, in mm. v F The speed of the strip inside the furnace is expressed in m / min. w ref The reference width for the annealing furnace design is in mm. StripT RTF This is the setpoint for the annealing temperature of the heating section, in °C. v FHL The maximum design speed for the annealing furnace, expressed in m / min; a ref The base thickness is the rate of change of annealing temperature, in mm / ℃. b ref The reference thickness of the strip is given at an annealing temperature of 0°C, in mm. The flue gas temperature correction model includes: ， ， in, WGT mn_cor_HL This is the temperature correction value for the nth thermocouple temperature warning in the mth layer, in °C. k mode The maximum temperature deviation corresponding to different heat load output modes, in °C; HD WG The average heat load output at each flue gas temperature measurement point is expressed as % (%). AVGHD WG_n This represents the heat load output at the nth flue gas temperature measurement point, expressed in % (%). WGTf mn_HL The dimensionless correction factor is the temperature correction factor for the nth flue gas thermocouple. HD j_cor The corrected heat load output for the j-th column of burners in the heating section of the annealing furnace, expressed in % (%). HD j The heat load output of the j-th column burner in the heating section of the annealing furnace is expressed in % (%). N fault_j This represents the number of burner malfunctions in the j-th column of the heating section of the annealing furnace, expressed in units. N total_j This refers to the total number of burners in the j-th column of the heating section of the annealing furnace, expressed in units of individual burners. j Indicates the column number of the burner; J This represents the total number of columns in the heating section of the annealing furnace. n Number the column containing each layer of thermocouples; The flue gas temperature correction model further includes: ， in, N TC This represents the average number of thermocouples on one side of each layer, expressed in units. The flue gas early warning model for the heating section of the annealing furnace includes: Among them, WGT mn_HL This is the warning reference value for the nth thermocouple in the mth layer, in °C.

2. The method according to claim 1, characterized in that, The determination of the combustion state of the burners in the heating section of the annealing furnace based on the flue gas early warning model of the heating section includes: For each thermocouple in the heating section of the annealing furnace, the actual temperature measured by the thermocouple is obtained; Based on the early warning model of the flue gas in the heating section of the annealing furnace, the early warning reference value of the thermocouple is determined; If the actual temperature is less than or equal to the sum of the warning benchmark value and the flue gas high temperature alarm threshold, then the combustion state of the burner corresponding to the thermocouple is determined to be a normal combustion state.

3. The method according to claim 2, characterized in that, The method further includes: If the actual temperature exceeds the sum of the warning benchmark value and the flue gas high temperature alarm threshold, the thermocouple triggers a flue gas high temperature warning to remind the user that the flue gas temperature in the heating section of the annealing furnace is too high. If the thermocouple triggers a high-temperature flue gas warning, and other thermocouples whose distance from the flue gas collection chamber exceeds the distance between the thermocouple and the flue gas collection chamber do not trigger a high-temperature flue gas warning, then the combustion state of the burner corresponding to the thermocouple is determined to be an overheated combustion state. The other thermocouples are any one of the thermocouples that are on the same layer and side as the thermocouple in the heating section of the annealing furnace.

4. The method according to claim 3, characterized in that, The step of controlling the closing of the burners in the heating section of the annealing furnace based on the combustion state of the burners in the heating section includes: If the burner in the heating section of the annealing furnace is in a normal combustion state, then the burner in the heating section of the annealing furnace is controlled to open. If the burner in the heating section of the annealing furnace is in a superheated combustion state, then the burner in the heating section of the annealing furnace is controlled to be shut off.

5. A control device for a radiant tube burner in a vertical annealing furnace, characterized in that, The device includes: The first building unit is used to build a flue gas temperature setting model based on strip thickness, strip width, and strip running speed; The second building unit is used to construct a flue gas temperature correction model based on the heat load output and the number of burner failures of the burners in the heating section of the annealing furnace. The third construction unit is used to construct an early warning model for the flue gas in the heating section of the annealing furnace based on the flue gas temperature setting model and the flue gas temperature correction model. The control unit is used to determine the combustion state of the burners in the heating section of the annealing furnace based on the flue gas early warning model of the heating section of the annealing furnace, and to control the burners in the heating section of the annealing furnace to close based on the combustion state of the burners in the heating section of the annealing furnace. The combustion state is used to determine whether the burners in the heating section of the annealing furnace have malfunctioned. The first building unit is configured as follows: in, WGT HL This is the baseline value for flue gas temperature warning under the current furnace conditions, in °C. HD F The theoretical heat load output for heating sections of different specifications is expressed in % (%). thk F This refers to the actual thickness of the strip steel in the heating section, in mm. w F This refers to the actual width of the strip in the heating section, in mm. v F The speed of the strip inside the furnace is expressed in m / min. w ref The reference width for the annealing furnace design is in mm. StripT RTF This is the setpoint for the annealing temperature of the heating section, in °C. v FHL The maximum design speed for the annealing furnace, expressed in m / min; a ref The base thickness is the rate of change of annealing temperature, in mm / ℃. b ref The reference thickness of the strip is given at an annealing temperature of 0°C, in mm. The second building unit is configured as follows: ， ， in, WGT mn_cor_HL This is the temperature correction value for the nth thermocouple temperature warning in the mth layer, in °C. k mode The maximum temperature deviation corresponding to different heat load output modes, in °C; HD WG The average heat load output at each flue gas temperature measurement point is expressed as % (%). AVGHD WG_n This represents the heat load output at the nth flue gas temperature measurement point, expressed in % (%). WGTf mn_HL The dimensionless temperature correction factor is the temperature correction factor for the nth flue gas thermocouple. HD j_cor The corrected heat load output for the j-th column of burners in the heating section of the annealing furnace, expressed in % (%). HD j The heat load output of the j-th column burner in the heating section of the annealing furnace is expressed in % (%). N fault_j This represents the number of burner malfunctions in the j-th column of the heating section of the annealing furnace, expressed in units. N total_j This refers to the total number of burners in the j-th column of the heating section of the annealing furnace, expressed in units of individual burners. j Indicates the column number of the burner; J This represents the total number of columns in the heating section of the annealing furnace. n Number the column containing each layer of thermocouples; The second building unit is further configured as follows: ， in, N TC This represents the average number of thermocouples on one side of each layer, expressed in units. The third building unit is configured as follows: Among them, WGT mn_HL This is the warning reference value for the nth thermocouple in the mth layer, in °C.

6. An electronic device, characterized in that, The electronic device includes one or more processors and one or more memories, wherein at least one program code is stored in the one or more memories, and the at least one program code is loaded and executed by the one or more processors to implement the control method for the radiant tube burner of the vertical annealing furnace as described in any one of claims 1 to 4.

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