Visual presentation method and system for crucible area of submerged arc furnace

Abstract

The invention belongs to the technical field of metallurgy, and provides a visual presentation method and system for a crucible area of a submerged arc furnace, and the method comprises the following steps: S1, pre-burying a thermocouple in a refractory material lining of the submerged arc furnace, and collecting the temperature data of the furnace lining of the submerged arc furnace; s2, establishing a three-dimensional model of the submerged arc furnace lining, and solving a furnace lining temperature field of the three-dimensional model of the submerged arc furnace lining based on the collected temperature data of the submerged arc furnace lining to obtain a furnace lining temperature field distribution model; s3, calibrating the furnace lining temperature field distribution model; and S4, according to the calibrated furnace lining temperature field distribution model, temperature distribution of the submerged arc furnace lining is calculated, and a crucible area is determined according to the temperature distribution of the submerged arc furnace lining. The shape of the crucible area in the furnace can be obtained, meanwhile, the temperature in the furnace can be monitored in real time, the change condition of the size of the crucible area can be mastered in time, temperature distribution is displayed in the furnace lining temperature field distribution model of the system in a real-time three-dimensional mode, manual visual inspection is not needed, and the digital production level is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of metallurgy, and particularly relates to a method and system for visually presenting the crucible area of a submerged arc furnace. Background Art

[0002] The submerged arc furnace method is the main method for ferroalloy production, also known as the reduction electric furnace method. Approximately 72% of ferroalloy production uses this method. Ferroalloy products represented by silicon-based alloys are produced using this method, which also belongs to slag-free smelting. The significant feature of its production process is that there is a "crucible area" in the furnace, which is a "pot"-shaped high-temperature area under each phase electrode, that is, the main reaction area where the ore is reduced. The size of the "crucible" in the furnace has a decisive impact on the furnace condition and various technical and economic indicators. Therefore, it is required to expand the "crucible area" as much as possible. The size of the "crucible area" is directly related to the electrical operating parameters, equipment structure parameters, and operation technical level of the submerged arc furnace. Thus, it is particularly important to judge and master the size of the crucible area for production operations.

[0003] In actual production, since the crucible area in the electric furnace is located below the material surface and the temperature is as high as 2000°C, the existing technical level cannot directly detect the crucible area and can only indirectly analyze and judge through the furnace condition on the material surface. The furnace superintendent generally judges the size of the "crucible area" by visually observing the air permeability of the material surface in the furnace, the penetration depth of the electrode, and the flame condition in the furnace to evaluate the quality of the furnace condition and timely adjust the operating parameters of the electric furnace. However, this manual experience observation method has a series of drawbacks. For example, there is a certain danger in observing in front of the furnace, and the high-temperature environment does not allow personnel to stay in front of the furnace for too long. At the same time, the judgment based on manual experience also has a large human error and may not be able to observe in time when the furnace condition changes, missing some important changes in the furnace condition, resulting in an insufficient understanding of the size of the "crucible area" in the furnace and the production index not being able to be stabilized at a better level. Summary of the Invention

[0004] The present invention aims to address the technical problems existing in the prior art and provides a method and system for visually presenting the crucible area of a submerged arc furnace that can obtain the shape of the crucible area in the furnace, making the size of the reaction area in the furnace more intuitive, and at the same time can real-time monitor the temperature in the furnace, timely grasp the change of the size of the crucible area, and the temperature distribution is presented in real-time three-dimensionally in the furnace lining temperature field distribution model of the system, without relying on manual visual observation, and improving the digital production level.

[0005] To achieve the above technical objectives, the present invention adopts the following technical solutions:

[0006] A method for visually presenting the crucible area of a submerged arc furnace, comprising the following steps:

[0007] S1. Embedded thermocouples in the refractory lining of the submerged arc furnace to collect the temperature data of the furnace lining of the submerged arc furnace;

[0008] S2. Establish a three-dimensional model of the submerged arc furnace lining. Based on the collected temperature data of the submerged arc furnace lining, solve the lining temperature field of the three-dimensional model of the submerged arc furnace lining to obtain the lining temperature field distribution model.

[0009] S3. Calibrate the lining temperature field distribution model.

[0010] S4. According to the calibrated lining temperature field distribution model, calculate the temperature distribution of the submerged arc furnace lining, and determine the crucible area based on the temperature distribution of the submerged arc furnace lining.

[0011] Preferably, in step S1, according to the size of the electric furnace, multiple layers of thermocouples are embedded at different heights of the refractory lining at the bottom and on the wall of the submerged arc furnace.

[0012] Preferably, on the horizontal plane of the refractory lining at the bottom of the submerged arc furnace, each layer of thermocouples is evenly arranged in a spider web pattern around the electrodes of the submerged arc furnace.

[0013] Preferably, on the horizontal plane of the refractory lining on the wall of the submerged arc furnace, each layer of thermocouples is evenly arranged on the circumferential wall of the submerged arc furnace.

[0014] Preferably, in step S2, select 1 / 4 of the submerged arc furnace to establish a three-dimensional model of the submerged arc furnace lining.

[0015] Preferably, in step S2, based on the basic three-dimensional heat conduction equation, the finite element method is used to calculate and solve the lining temperature field of the three-dimensional model of the submerged arc furnace lining to obtain the lining temperature field distribution model.

[0016] Preferably, in step S3, the process of calibrating the lining temperature field distribution model specifically includes:

[0017] S301. Determine the position of the thermocouple in the three-dimensional model of the submerged arc furnace lining, and extract the temperature value calculated at the corresponding position in the lining temperature field distribution model.

[0018] S302. Extract the measured value of this thermocouple.

[0019] S303. Compare the temperature value at the corresponding position of this thermocouple in the lining temperature field distribution model with the measured value of this thermocouple, and calculate the difference rate.

[0020] S304. When the difference rate is greater than the preset value, adjust the input parameters of the lining temperature field distribution model, re-solve the lining temperature field distribution model, and repeat steps S301 - S303 until the difference rate is less than the preset value.

[0021] Preferably, in step S4, intercept the temperature field and isothermal line distribution map of the cross-section according to the temperature distribution of the submerged arc furnace lining, and determine the crucible area based on the temperature field and isothermal line distribution map.

[0022] The present invention also provides a visualization system for the crucible area of ​​a submerged arc furnace, which uses the visualization method for the crucible area of ​​a submerged arc furnace as described above, and includes: a thermocouple acquisition module, a signal line, and an industrial computer module;

[0023] Thermocouple acquisition module is used to collect the temperature data of the lining of the submerged arc furnace;

[0024] The signal line is used to transmit the lining temperature data of the submerged arc furnace collected by the thermocouple acquisition module to the industrial computer;

[0025] The industrial computer module is used to calculate the lining temperature field distribution model based on the collected lining temperature data of the ore-fired furnace, calibrate the lining temperature field distribution model, calculate the temperature distribution of the lining of the ore-fired furnace, and determine the crucible area.

[0026] Preferably, the thermocouple acquisition module includes a multi-layer thermocouple pre-buried in the refractory lining of the submerged arc furnace; the industrial computer module includes a three-dimensional model of the submerged arc furnace lining and a lining temperature field distribution model.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] (1) The present invention indirectly obtains the shape of the crucible area in the furnace by pre-embedding thermocouples in the refractory lining of the ore-fired furnace to monitor the temperature, making the size of the reaction area in the furnace more intuitive. At the same time, the temperature in the furnace can be monitored in real time to timely grasp the changes in the size of the crucible area. In addition, since it no longer relies on manual visual observation, but relies on temperature sensors such as thermocouples for monitoring, the monitored temperature data is more accurate, thereby improving the level of digital production.

[0029] (2) The present invention transmits the collected temperature data to the industrial computer through a signal line, and calculates the isotherms and temperature field of the refractory lining of the furnace bottom and furnace wall of the ore-heating furnace according to the three-dimensional model of the ore-heating furnace lining and the ore-heating furnace lining temperature field distribution model. The temperature distribution is presented in real time in the ore-heating furnace lining temperature field distribution model of the system, thereby obtaining the outline of the crucible area in the entire ore-heating furnace. The production operator can accurately grasp the size of the crucible area, and thus adjust the electrical working parameters, equipment structure parameters, etc. of the ore-heating furnace in time according to the size of the crucible area, thereby optimizing the operation of the ore-heating furnace and the reaction conditions in the furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a flow chart of a method for visualizing a crucible area of ​​a submerged arc furnace according to an embodiment of the present invention;

[0031] Figure 2 This is a thermocouple distribution diagram on the horizontal plane of the refractory lining of the bottom of the submerged arc furnace according to an embodiment of the present invention;

[0032] Figure 3 A three-dimensional model diagram of a lining of a submerged arc furnace according to an embodiment of the present invention;

[0033] Figure 4 A technical roadmap for calibrating a furnace lining temperature field distribution model according to an embodiment of the present invention;

[0034] Figure 5 The overall temperature field distribution diagram of the lining of the ore-fired furnace according to the embodiment of the present invention;

[0035] Figure 6 A temperature distribution diagram of a vertical cross section of a lining of a submerged arc furnace according to an embodiment of the present invention;

[0036] Figure 7 A temperature distribution diagram of a horizontal cross section of a lining of a submerged arc furnace according to an embodiment of the present invention;

[0037] Figure 8 It is a structural schematic diagram of a visualization system for presenting a crucible area of ​​a submerged arc furnace according to an embodiment of the present invention;

[0038] Figure 9 This is a system architecture diagram for visualizing the crucible area of ​​a submerged arc furnace according to an embodiment of the present invention.

[0039] Description of Figure Numbers:

[0040] 1. Aluminum silicate asbestos board; 2. Furnace shell; 3. High-aluminum bricks for furnace hearth; 4. Castables for furnace hearth; 5. Ring-shaped carbon bricks; 6. Castables for furnace bottom; 7. High-aluminum bricks for furnace bottom; 8. Carbon bricks for furnace bottom; 9. Molten iron in molten pool; 10. Bottom of submerged arc furnace; 11. Furnace wall of submerged arc furnace; 12. Thermocouple; 13. Crucible area; 14. Electrode; 15. Charge. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Example 1

[0043] Combination Figure 1 As shown, an embodiment of the present invention provides a method for visualizing a crucible area of ​​a submerged arc furnace, comprising the following steps:

[0044] S1. Pre-embed thermocouples in the refractory lining of the submerged arc furnace to collect the temperature data of the submerged arc furnace lining;

[0045] S2, establishing a three-dimensional model of the lining of the submerged arc furnace, solving the lining temperature field of the three-dimensional model of the submerged arc furnace lining based on the collected lining temperature data of the submerged arc furnace, and obtaining a lining temperature field distribution model;

[0046] S3, calibrating the furnace lining temperature field distribution model;

[0047] S4. Calculate the temperature distribution of the lining of the submerged arc furnace according to the calibrated lining temperature field distribution model, and determine the crucible area according to the temperature distribution of the lining of the submerged arc furnace.

[0048] The shape of the crucible area in the furnace is indirectly obtained by pre-embedded thermocouples in the refractory lining of the ore-fired furnace to monitor the temperature, making the size of the reaction zone in the furnace more intuitive. At the same time, the temperature in the furnace can be monitored in real time to keep track of changes in the size of the crucible area. Moreover, since it no longer relies on manual observation with the naked eye, but relies on temperature sensors such as thermocouples for monitoring, the monitored temperature data is more accurate, which improves the level of digital production.

[0049] Example 2

[0050] Combination Figure 1 As shown, an embodiment of the present invention provides a method for visualizing a crucible area of ​​a submerged arc furnace, comprising the following steps:

[0051] S1. Pre-embed thermocouples in the refractory lining of the submerged arc furnace to collect the temperature data of the submerged arc furnace lining;

[0052] S2, establishing a three-dimensional model of the lining of the submerged arc furnace, solving the lining temperature field of the three-dimensional model of the submerged arc furnace lining based on the collected lining temperature data of the submerged arc furnace, and obtaining a lining temperature field distribution model;

[0053] S3, calibrating the furnace lining temperature field distribution model;

[0054] S4. Calculate the temperature distribution of the lining of the submerged arc furnace according to the calibrated lining temperature field distribution model, and determine the crucible area according to the temperature distribution of the lining of the submerged arc furnace;

[0055] On this basis, in the present embodiment, in step S1, according to the size of the electric furnace, multiple layers of thermocouples 12 are pre-buried at different heights of the refractory lining of the furnace bottom 10 and the furnace wall 11 of the submerged arc furnace; specifically, multiple layers of thermocouples 12 are pre-buried at different heights of the refractory lining of the furnace bottom of the submerged arc furnace, such as pre-buried 1-5 layers of thermocouples 12, and the number of layers of thermocouples 12 can be adjusted according to the size of the submerged arc furnace, and the bottom and top positions of the crucible area are obtained by monitoring the temperature distribution in height, and multiple layers of thermocouples 12 are also pre-buried at different heights of the refractory lining of the furnace wall of the submerged arc furnace, such as pre-buried 2-10 layers of thermocouples, and the number of layers of thermocouples can be adjusted according to the size of the submerged arc furnace;

[0056] Further, on the horizontal surface of the refractory lining of the bottom of the submerged arc furnace, each layer of thermocouples is evenly arranged in a spider web shape around the electrode 14 of the submerged arc furnace; specifically, considering the shape and characteristics of the crucible area, on the horizontal surface of the refractory lining of the bottom of the submerged arc furnace, such as Figure 2 As shown, each layer of thermocouples is evenly arranged around the electrode 14 of the ore-fired furnace in a spider web shape to accurately monitor the high and low distribution of temperature on the horizontal plane, thereby obtaining the horizontal area size of the crucible area;

[0057] Further, on the horizontal plane of the refractory lining of the furnace wall of the submerged arc furnace, each layer of thermocouples is evenly arranged on the circumferential furnace wall of the submerged arc furnace;

[0058] The crucible area visualization method in the submerged arc furnace is based on the principle of heat transfer. Multi-layer thermocouples are embedded at different heights of the refractory lining of the bottom and wall of the submerged arc furnace to monitor the temperature of the lining in real time, and obtain the temperature distribution and change of the lining near the side and bottom of the crucible area. Combined with the electric furnace geometric model and heat transfer model, the size and shape of the crucible area are indirectly obtained, and then the crucible area is determined.

[0059] Example 3

[0060] Combination Figure 1 As shown, an embodiment of the present invention provides a method for visualizing a crucible area of ​​a submerged arc furnace, comprising the following steps:

[0061] S1. Pre-embed thermocouples in the refractory lining of the submerged arc furnace to collect the temperature data of the submerged arc furnace lining;

[0062] S2, establishing a three-dimensional model of the lining of the submerged arc furnace, solving the lining temperature field of the three-dimensional model of the submerged arc furnace lining based on the collected lining temperature data of the submerged arc furnace, and obtaining a lining temperature field distribution model;

[0063] S3, calibrating the furnace lining temperature field distribution model;

[0064] S4. Calculate the temperature distribution of the lining of the submerged arc furnace according to the calibrated lining temperature field distribution model, and determine the crucible area according to the temperature distribution of the lining of the submerged arc furnace;

[0065] On this basis, in this embodiment, in step S2, 1 / 4 of the submerged arc furnace is selected to establish a three-dimensional model of the submerged arc furnace lining. Specifically, since the submerged arc furnace is centrally symmetrical, 1 / 4 of the submerged arc furnace is selected to establish a three-dimensional model of the submerged arc furnace lining, such as Figure 3 As shown in FIG. 1 , a three-dimensional model of a lining of a submerged arc furnace is established, and the three-dimensional model includes the following layers: aluminum silicate asbestos board 1, furnace shell 2, furnace hearth high-aluminum brick 3, furnace hearth castable 4, annular carbon brick 5, furnace bottom castable 6, furnace bottom high-aluminum brick 7, furnace bottom carbon brick 8 and molten iron in molten pool 9;

[0066] Further, in step S2, the finite element method is used to calculate and solve the lining temperature field of the submerged arc furnace lining three-dimensional model based on the three-dimensional heat conduction basic equation, and a lining temperature field distribution model is obtained; specifically, the basic equation of three-dimensional heat conduction is as follows:

[0067]

[0068] where k = h / (cp), h is the thermal conductivity, c is the specific heat capacity of the substance, p is the density, x, y, and z represent the three coordinate axes directions of space, and usually the rectangular coordinate system (x, y, z) is used to describe the points in three-dimensional space. v represents the change of the temperature field, usually represented by a scalar function, representing the temperature of a certain space point; t represents time, which is the independent variable in the heat conduction process.

[0069] Example 4

[0070] Combined with Figure 1 As shown, the embodiment of the present invention provides a method for visualizing the crucible area of a submerged arc furnace, including the following steps:

[0071] S1. Embedded thermocouples in the refractory lining of the submerged arc furnace to collect the temperature data of the submerged arc furnace lining;

[0072] S2. Establish a three-dimensional model of the submerged arc furnace lining, and solve the lining temperature field of the three-dimensional model of the submerged arc furnace lining based on the collected temperature data of the submerged arc furnace lining to obtain a lining temperature field distribution model;

[0073] S3. Calibrate the lining temperature field distribution model;

[0074] S4. Calculate the temperature distribution of the submerged arc furnace lining according to the calibrated lining temperature field distribution model, and determine the crucible area according to the temperature distribution of the submerged arc furnace lining;

[0075] On this basis, in this embodiment, since the inner lining of the submerged arc furnace is composed of various refractory materials, and there are also certain differences between the thermal conductivity of the materials and the actual situation, the temperature field calculated by the lining temperature field distribution model is different from the actual temperature field distribution. To obtain an accurate lining temperature field distribution, it is necessary to further calibrate the lining temperature field distribution model. In step S3, as Figure 4 shown, the process of calibrating the lining temperature field distribution model specifically includes:

[0076] S301. Determine the position of the thermocouple in the three-dimensional model of the submerged arc furnace lining, and extract the temperature value Tm calculated at the corresponding position in the lining temperature field distribution model;

[0077] S302. Extract the measured value Tc of this thermocouple;

[0078] S303, comparing the temperature value at the position corresponding to the thermocouple in the furnace lining temperature field distribution model with the measured value of the thermocouple, and calculating the difference rate ΔT. Specifically, the calculation formula of the difference rate ΔT is as follows:

[0079] ΔT=|Tc-Tm| / Tc;

[0080] S304, when the difference rate is greater than a preset value, adjusting the input parameters of the furnace lining temperature field distribution model, resolving the furnace lining temperature field distribution model, and repeating steps S301-S303 until the difference rate is less than a preset value, specifically, the preset value may be 5%;

[0081] Example 5

[0082] Combination Figure 1 As shown, an embodiment of the present invention provides a method for visualizing a crucible area of ​​a submerged arc furnace, comprising the following steps:

[0083] S1. Pre-embed thermocouples in the refractory lining of the submerged arc furnace to collect the temperature data of the submerged arc furnace lining;

[0084] S2, establishing a three-dimensional model of the lining of the submerged arc furnace, solving the lining temperature field of the three-dimensional model of the submerged arc furnace lining based on the collected lining temperature data of the submerged arc furnace, and obtaining a lining temperature field distribution model;

[0085] S3, calibrating the furnace lining temperature field distribution model;

[0086] S4. Calculate the temperature distribution of the lining of the submerged arc furnace according to the calibrated lining temperature field distribution model, and determine the crucible area according to the temperature distribution of the lining of the submerged arc furnace;

[0087] On this basis, in this embodiment, in step S4, the temperature field and isotherm distribution diagram of the cross section are intercepted according to the temperature distribution of the lining of the ore-fired furnace, and the crucible area is determined according to the temperature field and isotherm distribution diagram. The size and shape of the crucible area can be determined (the high temperature area is the crucible area). Specifically, the temperature field, isotherm distribution diagram, etc. can be arbitrarily intercepted according to the temperature distribution obtained by the lining temperature field distribution model as needed, such as Figure 5 , Figure 6 and Figure 7 shown.

[0088] Example 6

[0089] Combination Figure 7 and Figure 8 As shown, the embodiment of the present invention also provides a submerged arc furnace crucible area visualization presentation system using the submerged arc furnace crucible area visualization presentation method as described above, comprising: a thermocouple acquisition module, a signal line, and an industrial computer module;

[0090] Thermocouple acquisition module is used to collect the temperature data of the lining of the submerged arc furnace;

[0091] The signal wire is used to transmit the temperature data of the submerged-arc furnace lining collected by the thermocouple acquisition module to the industrial control computer. Specifically, the temperature data of the submerged-arc furnace lining collected by the thermocouple is centralized to the thermocouple acquisition module through the signal wire and the junction box, and then transmitted to the industrial control computer through the signal wire.

[0092] The industrial control computer module is used to calculate the lining temperature field distribution model based on the collected temperature data of the submerged-arc furnace lining, calibrate the lining temperature field distribution model, calculate the temperature distribution of the submerged-arc furnace lining, and determine the crucible area 13.

[0093] Furthermore, the thermocouple acquisition module includes multiple layers of thermocouples embedded in the refractory lining of the submerged-arc furnace; the industrial control computer module includes a three-dimensional model of the submerged-arc furnace lining and a lining temperature field distribution model. Specifically, the multiple layers of thermocouples embedded in the refractory lining continuously monitor and collect and analyze the temperature data of the submerged-arc furnace lining (where Figure 7 the shaded area is the furnace charge 15 of the submerged-arc furnace), and then transmit the collected temperature data to the industrial control computer through the signal wire. According to the three-dimensional model of the submerged-arc furnace lining and the lining temperature field distribution model, a number of accurate data such as the isotherms and temperature fields of the refractory linings of the furnace bottom and furnace wall of the submerged-arc furnace are calculated, and the temperature distribution is presented in real time and three-dimensionally in the lining temperature field distribution model of the system, so as to obtain the contour of the crucible area in the entire submerged-arc furnace. The production operator can accurately master the size of the crucible area, and thus timely adjust the electrical working parameters, equipment structure parameters, etc. of the submerged-arc furnace according to the size of the crucible area, and optimize the operation of the submerged-arc furnace and the reaction conditions in the furnace.

[0094] The above are only the embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the scope of the application of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for visualizing a crucible area of ​​a submerged arc furnace, characterized in that: The following steps are involved: S1. Pre-embed thermocouples in the refractory lining of the submerged arc furnace to collect the temperature data of the submerged arc furnace lining; S2, establishing a three-dimensional model of the lining of the submerged arc furnace, solving the lining temperature field of the three-dimensional model of the submerged arc furnace lining based on the collected lining temperature data of the submerged arc furnace, and obtaining a lining temperature field distribution model; S3, calibrating the furnace lining temperature field distribution model; S4. Calculate the temperature distribution of the lining of the submerged arc furnace according to the calibrated lining temperature field distribution model, and determine the crucible area according to the temperature distribution of the lining of the submerged arc furnace.

2. The method for visualizing the crucible area of ​​a submerged arc furnace according to claim 1, characterized in that: In step S1, multiple layers of thermocouples are pre-buried at different heights of the refractory lining of the furnace bottom and the furnace wall of the electric furnace according to the size of the electric furnace.

3. The method for visualizing the crucible area of ​​a submerged arc furnace according to claim 2, characterized in that: On the horizontal plane of the refractory lining of the bottom of the submerged arc furnace, each layer of thermocouples is evenly arranged in a spider web shape around the electrodes of the submerged arc furnace.

4. The method for visualizing the crucible area of ​​a submerged arc furnace according to claim 2, characterized in that: On the horizontal plane of the refractory lining of the furnace wall of the submerged arc furnace, each layer of thermocouples is evenly arranged on the circumferential furnace wall of the submerged arc furnace.

5. The method for visualizing the crucible area of ​​a submerged arc furnace according to claim 1, characterized in that: In step S2, 1 / 4 of the submerged arc furnace is selected to establish a three-dimensional model of the submerged arc furnace lining.

6. The method for visualizing the crucible area of ​​a submerged arc furnace according to claim 1, characterized in that: In step S2, based on the three-dimensional heat conduction basic equation, the lining temperature field of the three-dimensional model of the ore-fired furnace lining is calculated and solved by the finite element method to obtain the lining temperature field distribution model.

7. The method for visualizing the crucible area of ​​a submerged arc furnace according to claim 1, characterized in that: In step S3, the process of calibrating the furnace lining temperature field distribution model specifically includes: S301, determining the position of the thermocouple in the three-dimensional model of the lining of the submerged arc furnace, and extracting the temperature value calculated at the corresponding position in the lining temperature field distribution model; S302, extracting the actual measured value of the thermocouple; S303, comparing the temperature value at the position corresponding to the thermocouple in the furnace lining temperature field distribution model with the measured value of the thermocouple, and calculating the difference rate; S304. When the difference rate is greater than a preset value, adjust the input parameters of the furnace lining temperature field distribution model, re-solve the furnace lining temperature field distribution model, and repeat steps S301-S303 until the difference rate is less than the preset value.

8. The method for visualizing the crucible area of ​​a submerged arc furnace according to claim 1, characterized in that: In step S4, the temperature field and isothermal distribution diagram of the cross section are obtained according to the temperature distribution of the lining of the ore-fired furnace, and the crucible area is determined according to the temperature field and isothermal distribution diagram.

9. A visualization system for the crucible area of ​​a submerged arc furnace, characterized in that: The method for visualizing the crucible area of ​​a submerged arc furnace as described in any one of claims 1 to 8 comprises: a thermocouple acquisition module, a signal line, and an industrial computer module; Thermocouple acquisition module is used to collect the temperature data of the lining of the submerged arc furnace; The signal line is used to transmit the lining temperature data of the submerged arc furnace collected by the thermocouple acquisition module to the industrial computer; The industrial computer module is used to calculate the lining temperature field distribution model based on the collected lining temperature data of the ore-fired furnace, calibrate the lining temperature field distribution model, calculate the temperature distribution of the lining of the ore-fired furnace, and determine the crucible area.

10. The visualization system for the crucible area of ​​a submerged arc furnace according to claim 9, characterized in that: The thermocouple acquisition module includes a multi-layer thermocouple pre-buried in the refractory lining of the submerged arc furnace; the industrial computer module includes a three-dimensional model of the submerged arc furnace lining and a lining temperature field distribution model.

Images