Anode carbon block production line control system and method

Abstract

The invention relates to the technical field of carbon block production control, and discloses an anode carbon block production line control system and method, and the system comprises a contact area measurement module, a voltage drop detection module, a surface treatment module, a conductive material filling module, and a dynamic adjustment module. The system firstly measures the initial contact area and voltage drop of the iron and the carbon block, and then calculates the theoretical maximum contact area according to the contact condition. The contact surface is optimized through mechanical grinding, polishing, graphite powder filling and the like, the contact area can be effectively increased, and the voltage drop is reduced; the optimization verification link can accurately calculate the lifting and lowering proportion, and the optimization effect is ensured; the system has a dynamic adjustment mechanism, and the contact area after adjustment can be calculated and increased if the reduction proportion of the voltage drop is not expected; a zigzag processing mode is adopted for increasing the contact surface, and the increased area is ensured to meet the requirement through multi-step operation; the conductivity of the anode carbon block production line can be improved, the electric energy loss is reduced, and the stable operation of the production line is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon block production control, and particularly to a control system and method for an anode carbon block production line. Background Art

[0002] In the fields of anode carbon block production and related industrial applications, good electrical contact between iron and carbon blocks is crucial. Anode carbon blocks are widely used in industries such as electrolytic aluminum. During the electrolysis process, as key conductive components, the contact performance between iron electrodes and anode carbon blocks directly affects the power transmission efficiency and production energy consumption.

[0003] Currently, there are many problems with the traditional iron-carbon block contact method. On the one hand, due to factors such as processing technology, the contact surface between iron and carbon blocks often has surface roughness, resulting in a relatively small actual effective contact area. This smaller contact area will generate a relatively large contact resistance. According to Ohm's law, the increase in contact resistance will cause a significant voltage drop. In large-scale industrial production, such as an electrolytic aluminum production line, a large amount of electrical energy is lost due to this unnecessary voltage drop, increasing production costs and reducing energy utilization efficiency.

[0004] On the other hand, the existing iron-carbon block contact structure and control method lack dynamic adaptability. During the production process, due to fluctuations in working conditions such as temperature and pressure, the contact state between iron and carbon blocks will change, and the contact resistance will also change accordingly. However, traditional methods cannot effectively adjust the contact area and pressure in real time, making it difficult to ensure stable and efficient conductive performance. For example, when the ambient temperature rises and causes thermal expansion of the materials, the contact pressure between iron and carbon blocks may change, thereby affecting the contact resistance, but the existing technology cannot respond in a timely manner and optimize the contact state.

[0005] In addition, the existing iron-carbon block contact surface structure is relatively simple, mostly simple planar contact. This structure is difficult to make full use of the material surface and cannot maximize the contact area. For some carbon blocks with complex shapes or special working condition requirements, the traditional planar contact structure cannot meet the demand for efficient conductivity.

[0006] In summary, in the existing anode carbon block production line, the contact technology between iron and carbon blocks has deficiencies in improving conductive performance, adapting to working condition changes, and optimizing the structure. There is an urgent need for an innovative control system and method to solve these problems in order to improve the power transmission efficiency and stability of anode carbon block production and related industrial applications. Summary of the Invention

[0007] The purpose of the present invention is to provide a control system and method for an anode carbon block production line, which solves the technical problems proposed in the background art.

[0008] The purpose of the present invention can be achieved through the following technical solutions: A control system and method for an anode carbon block production line, comprising the following steps: Step 1. Measurement of initial contact area and voltage drop: Under the initial contact state of iron and carbon block, measure the initial contact area and initial voltage drop between the two; Step 2. Calculation of maximum contact area: For planar contact, the theoretical maximum contact area is the surface area of the smaller one of the two; For non-planar contact, it is calculated by the following method: If one of the iron surface and the carbon block is planar and the other is arc-shaped, the theoretical maximum contact area is the area of the tangential contact region between the arc surface and the plane; Its calculation formula is: S max = 2πrh; In the formula, S max is the theoretical maximum contact area between the iron surface and the carbon block, r is the radius of the arc surface, and h is the contact height; Step 3. Optimization of the contact surface: Perform mechanical grinding or polishing operations on the contact surface of iron or carbon block, and fill a highly conductive material between the iron and the carbon block; Step 4. Optimization verification: Measure the optimized contact area and voltage drop, then calculate the contact area increase ratio and voltage drop decrease ratio. When the voltage drop decrease ratio is greater than the preset voltage drop decrease threshold, calculate the ratio adjustment coefficient between the contact area increase ratio and the voltage drop decrease ratio; Step 5. Dynamic adjustment of the contact area: Obtain the preset target voltage drop reduction threshold γm, and then compare the voltage drop reduction ratio γ with it: When γ ≥ γm, it is determined that the current optimized contact area after the contact surface optimization treatment reaches the expected effect; When γ < γm, it is determined that the current optimized contact area after the contact surface optimization treatment does not reach the expected effect. Then determine the corresponding adjusted contact area of the iron or carbon block, and finally increase the contact surface between the iron and the carbon block according to the adjusted contact area.

[0009] As a further solution of the present invention: Among them, the measurement method of the initial contact area is as follows: Adopt the conductive coating method, coat a conductive material on the contact surface, and calculate the contact area by measuring the conductive region; The measurement method of the initial voltage drop is as follows: Apply a constant current between the iron and the carbon block, then measure the voltage difference at both ends through a voltage measuring instrument, and record it as the initial voltage drop.

[0010] As a further solution of the present invention: In the contact surface optimization step: Before performing mechanical grinding or polishing operations, measure the initial roughness of the contact surface of the iron or carbon block with a roughness measuring instrument, and record it as R 0 ; After performing mechanical grinding or polishing operations, measure the processed roughness of the contact surface of the iron or carbon block with a roughness measuring instrument, and mark it as R 1 ; Then, through: , calculate the theoretical maximum contact area S1 after flattening treatment max ; In the formula, β is a pre-set material adaptation coefficient; Then, through: , calculate the theoretical maximum contact area S2 after conductive material filling treatment max ; In the formula, AS is the effective contact area of the highly conductive material.

[0011] As a further solution of the present invention: Among them, the highly conductive material is selected as graphite powder; the effective contact area of the graphite powder is obtained by measuring the thickness and area of the filling area and combining the parameters corresponding to the bulk density of the graphite powder; the specific method is as follows: Measure the thickness of the filling area: Use a high-precision thickness measuring instrument; In the area filled with graphite powder, select multiple measurement points evenly distributed in the filling area for thickness measurement; Measure the area of the filling area: If the filling area is a regular geometric shape, such as a rectangle, use a ruler tool to measure its length a and width b, and according to the rectangle area formula S t =a×b, calculate the filling area S t ; If it is a circle, use a caliper to measure its diameter d, and according to the circle area formula S t =π(d / 2) 2 , calculate the filling area S t ; Determine the bulk density of the graphite powder: Determine the bulk density ρ of the graphite powder by referring to relevant materials or conducting self-experiments; When conducting self-experiments, pour a certain mass m of graphite powder into a container with a known volume V, gently vibrate to make the graphite powder densely packed, and then calculate the bulk density of the graphite powder according to the density calculation formula ρ=m / V; Estimate the effective contact area: Assume that the graphite powder is evenly distributed in the filling area, and according to the volume formula V=S t ×h p, calculate the filled volume of the graphite powder; Then, combined with the bulk density, estimate the mass of the graphite powder m = ρ × S t × h p ; Determine the proportionality coefficient e between the effective contact area and the mass of the graphite powder through experiments, specifically: measure the effective contact area of a specified mass of graphite powder under standard contact conditions to obtain this proportional relationship; Then the effective contact area AS = e × m = e × ρ × S t × h p .

[0012] As a further solution of the present invention: The optimization verification method is as follows: Step N1: Measure the optimized contact area and the optimized voltage drop after being processed by the above optimization method according to the method of measuring the initial contact area and the voltage drop in Step 1; The measurement method of the optimized contact area is the same as that of the initial contact area; The measurement method of the optimized voltage drop is the same as that of the initial voltage drop; Step N2: Then through: ; Calculate the improved ratio c of the contact area after optimization; Step N3: Then through: ; Calculate the reduced ratio γ of the voltage drop after optimization; In the formula, U0 is the initial voltage drop, and U1 is the optimized voltage drop; Step N4: Compare the reduced ratio γ of the voltage drop with the preset voltage drop reduction threshold γa: When γ > γa, it means that the optimized contact area after the contact surface optimization treatment is effective, and at the same time, calculate the proportional adjustment coefficient B between the improved ratio of the contact area and the reduced ratio of the voltage drop through B = c / γ.

[0013] As a further solution of the present invention: The calculation method of the adjusted contact area is as follows: Subtract the reduced ratio of the optimized voltage drop from the target voltage drop reduction threshold to obtain the difference in the reduced ratio of the voltage drop; Then divide the current optimized contact area by the proportional adjustment coefficient B to obtain the secondary improved ratio of the contact area; Then through: ; Calculate the corresponding adjusted contact area SK of the iron or carbon block.

[0014] As a further solution of the present invention: The enlarging treatment method is: process the contact surface of the iron or carbon block into a serrated shape; The serrated processing method is as follows: Step H1: First, calculate the adjusted difference SC0 of the corresponding contact area of the iron or carbon block through: , and calculate the adjusted difference SC0 of the corresponding contact area of the iron or carbon block. Step H2: On the iron or carbon block, select multiple uniformly distributed areas with the same specified area size as the serrated processing areas. Step H3: Then, perform groove cutting and grinding on the processing areas, and then calculate the area of the grooves corresponding to the processing areas. Step H4: Next, select the processing areas, and subtract the area of the grooves corresponding to the processing areas from the specified area of the processing areas before groove cutting to obtain the area difference of the processing areas. Step H5: Then, add up the area differences of all the processing areas to obtain the increased area of the serrated contact surface. Step H6: Finally, compare the increased area of the serrated contact surface with the adjusted difference of the contact area: When the increased area of the serrated contact surface is greater than or equal to the adjusted difference of the contact area, it is determined that the current corresponding serrated contact surface processing is completed. When the increased area of the serrated contact surface is less than the adjusted difference of the contact area, continue to cut and grind the grooves of each processing area until the increased area of the serrated contact surface is greater than or equal to the adjusted difference of the contact area. Among them, the groove cutting of each processing area is carried out in batches according to the adjusted difference of the contact area for fine cutting.

[0015] A control system for an anode carbon block production line, which is used to execute a control method for an anode carbon block production line. The system includes: A contact area measurement module, which is used to measure the initial contact area and the initial voltage drop between the iron and the carbon block in the initial contact state. A voltage drop detection module, which is used to apply current and measure the initial voltage drop between the iron and the carbon block in the initial contact state. A surface treatment module, which is used to control mechanical grinding or polishing operations. A conductive material filling module, which is used to automatically fill graphite powder. A dynamic adjustment module, which is used to calculate and execute contact area adjustment.

[0016] As a further solution of the present invention: The system further includes: A roughness measuring instrument, which is used to monitor the change of the roughness of the contact surface in real time.

[0017] As a further solution of the present invention: The dynamic adjustment module integrates a serrated processing device, and realizes groove cutting through a numerical control machine tool.

[0018] The beneficial effects of the present invention: Optimizing Contact Performance: By means of mechanical grinding or polishing operations on the contact surface between iron and carbon blocks, and optimization measures such as filling highly conductive materials (such as graphite powder), the contact area between the two has been effectively increased, and the voltage drop has been reduced. Through the optimization verification steps, the improvement ratio of the contact area and the reduction ratio of the voltage drop can be accurately calculated. When the reduction ratio of the voltage drop meets the pre-set threshold, it indicates that the optimized contact area is effective, thereby improving the electrical conductivity in the anode carbon block production line and reducing power consumption.

[0019] Precise Measurement and Calculation: In terms of measuring the initial contact area and voltage drop, the conductive coating method is used to measure the initial contact area, and the initial voltage drop is measured by applying a constant current and a voltage measuring instrument. The method is scientific and accurate; when calculating the theoretical maximum contact area, reasonable calculation methods are given respectively for different contact situations (plane contact and non-plane contact); for the measurement of the effective contact area of graphite powder, precise estimation is carried out by measuring the thickness and area of the filling area, combined with the bulk density and proportional coefficient, etc., ensuring the accuracy of the measurement and calculation of each parameter, and providing a reliable basis for subsequent optimization and adjustment.

[0020] Dynamic Adjustment and Adaptability: It has a dynamic adjustment mechanism for the contact area, comparing the reduction ratio of the voltage drop with the pre-set target reduction threshold, and can accurately determine whether the current optimized contact area meets the expected effect. When it does not meet the expectation, the corresponding adjusted contact area of iron or carbon block can be determined according to the calculation and enlarged accordingly, enabling the system to adaptively optimize the contact area according to the actual situation to meet the voltage drop target requirements and ensure the stable operation of the anode carbon block production line.

[0021] Scientific and Rational Processing of the Contact Surface: The method of increasing the contact surface (processing the contact surface of iron or carbon block into a serrated shape) is scientific and rational. Through precise calculation of the adjustment difference of the contact area, selecting a suitable processing area, cutting grooves and grinding the processing area, calculating the area difference of the area, etc., a series of steps are carried out to gradually realize the processing of the serrated contact surface, ensuring that the increased contact area can meet the adjustment requirements and further improving the contact performance between iron and carbon blocks.

[0022] Strong Operability: In each step of the entire control system and method, such as measurement, calculation, processing, etc., detailed operation methods and specific calculation formulas are given, and clear methods for obtaining each parameter are also provided (such as the selection of measurement tools, determination of bulk density, etc.), making the system and method have strong operability and being convenient for implementation and application in the actual anode carbon block production line. Description of the Drawings

[0023] The present invention will be further described below in conjunction with the drawings.

[0024] Figure 1It is a schematic flow chart of a control method for an anode carbon block production line according to the present invention.

[0025] Figure 2 It is a system block diagram of a control system for an anode carbon block production line according to the present invention.

[0026] Figure 3 It is a cutting schematic diagram of a zigzag contact surface in a control system and method for an anode carbon block production line according to the present invention. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0028] As Embodiment 1 of the present invention: Please refer to Figure 1 and Figure 3 As shown, the present invention is a control method for an anode carbon block production line, including the following steps: Step 1. Measurement of initial contact area and voltage drop: Under the initial contact state between iron and the carbon block, measure the initial contact area and the initial voltage drop between the two; Among them, the measurement method of the initial contact area is as follows: Adopt the conductive coating method, coat the conductive material on the contact surface, and calculate the contact area by measuring the conductive area; The measurement method of the initial voltage drop is as follows: Apply a constant current between iron and the carbon block, then pass through a voltage measuring instrument to measure the voltage difference at both ends, and record it as the initial voltage drop; Step 2. Calculation of the maximum contact area: The theoretical maximum contact area between iron and the carbon block is determined by their geometric shapes; For planar contact, the theoretical maximum contact area is the surface area of the smaller one of the two; For example: For example, if the contact plane area of the iron electrode is 20 cm 2 , and the contact plane area of the carbon block is 15 cm 2 , then the theoretical maximum contact area is 15 cm 2 ; For non-planar contact, it is calculated by the following method: In this embodiment, non-planar contact refers to an arc surface or a rough surface; If one of the iron surface and the carbon block is flat and the other is curved, the theoretical maximum contact area is the area of the tangential contact region between the curved surface and the flat surface; Its calculation formula is: S max = 2πrh; In the formula, S max is the theoretical maximum contact area between the iron surface and the carbon block, r is the radius of the curved surface, and h is the contact height; For example: If the iron surface is flat and the carbon block surface is curved, and at the same time assume that the radius of the curved surface of the carbon block r = 5 cm and the contact height h = 2 cm, then S max = 2π×5×2 = 20π ≈ 62.8 cm 2 ; Step 3. Contact surface optimization: Adopt the following method to increase the actual contact area between iron and carbon block: Step R1. Surface flattening treatment: Perform mechanical grinding or polishing operations on the contact surface of the iron or carbon block; In this embodiment, mechanical grinding or polishing can reduce the surface roughness and make the contact between the iron or carbon block closer; Before performing the mechanical grinding or polishing operation, measure the initial roughness of the contact surface of the iron or carbon block with a roughness measuring instrument and record it as R 0 ; After performing the mechanical grinding or polishing operation, measure the processed roughness of the contact surface of the iron or carbon block with a roughness measuring instrument and mark it as R 1 ; Then through: , calculate the theoretical maximum contact area S1 after the flattening treatment max ; In the formula, β is a pre-set material adaptation coefficient. In this embodiment, the iron and carbon materials take values from 0.6 to 0.8; Step R2. Conductive material filling treatment: Fill a highly conductive material between the iron and the carbon block; In this embodiment, graphite powder is selected as the highly conductive material; Then through: , calculate the theoretical maximum contact area S2 after the conductive material filling treatment max ; In the formula, AS is the effective contact area of the highly conductive material; Step 4. Optimization verification: Step N1. According to the method of measuring the initial contact area and voltage drop in Step 1, measure the optimized contact area and optimized voltage drop after being processed by the above optimization method; The measurement methods for the optimized contact area and the initial contact area are the same; The measurement methods for the optimized voltage drop and the initial voltage drop are the same; Step N2. Then, through: ; Calculate the improvement ratio c of the optimized contact area; Step N3. Subsequently, through: ; Calculate the reduction ratio γ of the optimized voltage drop; In the formula, U0 is the initial voltage drop, and U1 is the optimized voltage drop; Step N4. Compare the voltage drop reduction ratio γ with the preset voltage drop reduction threshold γa: When γ > γa, it means that the optimized contact area after the contact surface optimization treatment is effective. At the same time, calculate the proportional adjustment coefficient B between the improvement ratio of the contact area and the reduction ratio of the voltage drop through B = c / γ; Step Five. Dynamic adjustment of the contact area: Obtain the preset target voltage drop reduction threshold γm, and then compare the voltage drop reduction ratio γ with it: When γ ≥ γm, it is determined that the current optimized contact area after the contact surface optimization treatment reaches the expected effect; When γ < γm, it is determined that the current optimized contact area after the contact surface optimization treatment does not reach the expected effect. Then determine the adjusted contact area corresponding to the iron or carbon block, and finally increase the contact surface between the iron and the carbon block according to the adjusted contact area; The calculation method of the adjusted contact area is as follows: Subtract the optimized voltage drop reduction ratio from the target voltage drop reduction threshold to obtain the voltage drop reduction ratio difference; Subsequently, divide the current optimized contact area by the proportional adjustment coefficient B to obtain the secondary improvement ratio of the contact area; Then, through: ; Calculate the adjusted contact area SK corresponding to the iron or carbon block; The method of increasing the treatment is: process the contact surface of the iron or carbon block into a serrated shape, as Figure 3 shown; In the first embodiment, by measuring the initial contact area between iron and carbon blocks and the voltage drop, and combining with the calculation of the theoretical maximum contact area, two methods for optimizing the contact surface, namely surface flattening treatment and conductive material filling treatment, are proposed. By comparing the contact area and voltage drop before and after optimization, calculating the improvement ratio and reduction ratio, the optimization effect is judged and the proportional adjustment coefficient is obtained. When the reduction ratio of the voltage drop after optimization is greater than the preset threshold, it indicates that the optimization is effective, and the contact area can be dynamically adjusted according to the proportional adjustment coefficient and the target reduction threshold to achieve the expected effect, effectively improving the control and optimization ability of the contact performance between iron and carbon blocks in the anode carbon block production line, and laying a foundation for improving production efficiency and product quality.

[0029] As the second embodiment of the present invention: Please refer to Figure 1 and Figure 3 As shown, as the second embodiment of the present invention, in the specific implementation of this application, compared with the first embodiment, the difference between the technical solution of this embodiment and that of the first embodiment is only that in this embodiment, it is also proposed that for the effective contact area of the graphite powder corresponding to the filling material, by measuring the thickness and area of the filling area and combining with the parameters corresponding to the bulk density of the graphite powder, the effective contact area is obtained; The specific method is as follows: Measuring the thickness of the filling area: Use high-precision thickness measuring instruments, such as micrometers, laser thickness gauges, etc.; In the area filled with graphite powder, select multiple measurement points evenly distributed in the filling area for thickness measurement; For example: For example, for a rectangular filling area, measure the thickness at the four corners and the center position respectively to obtain the measured thickness values h 1 、h 2 、h 3 、h 4 、h 5 ; Then through h p = (h 1 + h 2 + h 3 + h 4 + h 5 ) / 5, calculate the average thickness h p ; Measuring the area of the filling area: If the filling area is a regular geometric shape, such as a rectangle, use a ruler tool to measure its length a and width b, and according to the rectangle area formula S t = a × b, calculate the filling area S t ; If it is a circle, use a caliper to measure its diameter d, and according to the circle area formula S t= π(d / 2) 2 Calculate the area S of the filled area t ; Determine the bulk density of graphite powder: Look up relevant information or conduct self-experiments to measure the bulk density ρ of graphite powder; When conducting self-experiments, pour a certain mass m of graphite powder into a container with a known volume V, gently vibrate to make the graphite powder densely packed, and then calculate the bulk density of graphite powder according to the density calculation formula ρ = m / V; Estimate the effective contact area: Assume that the graphite powder is evenly distributed in the filled area. According to the volume formula V = S t × h p Calculate the volume filled with graphite powder; Combined with the bulk density, estimate the mass m of graphite powder = ρ × S t × h p ; Determine the proportionality coefficient e between the effective contact area and the mass of graphite powder through experiments. Specifically: Measure the effective contact area of a specified mass of graphite powder under standard contact conditions to obtain this proportional relationship; Then the effective contact area AS = e × m = e × ρ × S t × h p ; Example 2, based on Example 1, proposes a detailed method for calculating the effective contact area of graphite powder in the filling treatment of conductive materials. By measuring the thickness of the filled area (measuring at multiple evenly distributed points and taking the average value), measuring the area of the filled area (calculating according to corresponding formulas for different geometric shapes), and determining the bulk density of graphite powder (looking up information or conducting self-measurement), the effective contact area is estimated. This method makes the calculation of the effective contact area of graphite powder more accurate during the filling treatment of conductive materials, further improving the accuracy of optimizing the contact surface calculation, providing strong support for more precisely optimizing the contact performance between iron and carbon blocks, and helping to improve the scientificity and reliability of the control system and method for the anode carbon block production line.

[0030] As Example 3 of the present invention: Please refer to Figure 1 and Figure 3 As shown, as Example 3 of the present invention, when the present application is specifically implemented, compared with Example 1 and Example 2, the technical solution of this example lies in combining the solutions of the above Example 1 and Example 2 for implementation. The difference between the technical solution of this example and Example 1 and Example 2 is only that in this example, a specific method for increasing the treatment is also proposed, and the method is referred to as a zigzag processing method, specifically as follows: Step H1. First, through: , calculate the adjustment difference SC0 of the corresponding contact area of iron or carbon block; Step H2: On the iron or carbon block, select multiple uniformly distributed areas of the same specified area size as the zigzag machining areas; Step H3: Then, perform groove cutting and grinding on the machining areas, and then calculate the area of the grooves corresponding to the machining areas; Step H4: Next, select the machining areas, and subtract the area of the grooves corresponding to the machining areas from the specified area of the machining areas before groove cutting to obtain the area difference of the machining areas; Step H5: After that, add up the area differences of all the machining areas to obtain the increased area of the zigzag contact surface; Step H6: Finally, compare the increased area of the zigzag contact surface with the adjusted difference of the contact area: When the increased area of the zigzag contact surface is greater than or equal to the adjusted difference of the contact area, it is determined that the current corresponding zigzag contact surface machining is completed; When the increased area of the zigzag contact surface is less than the adjusted difference of the contact area, continue to cut and grind the grooves of each machining area until the increased area of the zigzag contact surface is greater than or equal to the adjusted difference of the contact area; In this embodiment, the grooves of each machining area are finely cut in batches according to the adjusted difference of the contact area; Based on Embodiment 1 and Embodiment 2, Embodiment 3 clarifies the specific method of zigzag machining in the process of increasing the contact area. By calculating the adjusted difference of the contact area of the iron or carbon block, select uniformly distributed areas with a specified area as the machining areas, perform groove cutting, grinding on them and calculate the groove area, obtain the area difference of the areas, and then determine whether the machining is completed by comparing the increased area of the zigzag contact surface with the adjusted difference. This detailed machining method makes the process of increasing the contact area more operable and controllable, can more effectively achieve the precise adjustment of the contact area, improves the process level of the contact area adjustment link in the anode carbon block production line, and ensures the achievement of the optimization effect.

[0031] As Embodiment 4 of the present invention: Please refer to Figure 1 and Figure 3 As shown, as Embodiment 4 of the present invention, when the present application is specifically implemented, compared with Embodiment 1, Embodiment 2 and Embodiment 3, the technical solution of this embodiment is to combine and implement the solutions of the above Embodiment 1, Embodiment 2 and Embodiment 3. At the same time, in this embodiment, the maximum contact area is calculated by using any one of Step R1: surface flattening treatment and Step R2: conductive material filling treatment; When only the surface flattening treatment is adopted, Step R2 is not continued; When only the conductive material filling treatment is adopted, then .

[0032] Example 4 combines the solutions of Examples 1, 2, and 3, comprehensively integrating technical key points such as measuring initial parameters, optimizing the contact surface method, accurately calculating the effective contact area of graphite powder, and detailed zigzag machining methods.

[0033] By allowing the calculation of the maximum contact area by only adopting one of the surface flattening treatment or conductive material filling treatment, the adaptability and operability of the system are greatly enhanced. If only the surface flattening treatment is adopted, the system can focus on improving the contact performance through mechanical grinding or polishing, avoiding unnecessary conductive material filling links, simplifying the operation process, and improving work efficiency; if only the conductive material filling treatment is adopted, it can give full play to the advantages of highly conductive materials for specific production requirements and accurately optimize the contact effect. This flexible selection mechanism enables the entire system to better adapt to different production scenarios and process requirements, comprehensively improving the technical level of the anode carbon block production line, effectively ensuring the stability and efficiency of the production process and the reliability of product quality, and bringing more valuable innovative solutions to the anode carbon block production field; This comprehensive combination implementation method optimizes the contact performance between iron and carbon blocks in the anode carbon block production line from the measurement of contact performance parameters, the implementation of optimization methods to the control of processing details, maximizing the integrity, scientificity, and effectiveness of the entire control system and method, providing a more complete and efficient technical solution for anode carbon block production, and effectively ensuring the stability of the production process and the reliability of product quality.

[0034] The present invention also provides a control system for an anode carbon block production line, which is used to execute a control method for an anode carbon block production line. The system includes: A contact area measurement module for measuring the initial contact area and initial voltage drop between iron and carbon blocks in the initial contact state. A voltage drop detection module for applying current and measuring the initial voltage drop between iron and carbon blocks in the initial contact state. A surface treatment module for controlling mechanical grinding or polishing operations. A conductive material filling module for automatically filling graphite powder. A dynamic adjustment module for calculating and performing contact area adjustment. The dynamic adjustment module integrates a zigzag machining device and realizes groove cutting through a numerical control machine tool. A roughness measuring instrument for real-time monitoring of the roughness change of the contact surface.

[0035] The above formulas are all dimensionless and take their numerical values for calculation. The formulas are obtained by collecting a large amount of data for software simulation to get a formula that is closest to the actual situation. The preset parameters and threshold selection in the formulas are set by those skilled in the art according to the actual situation.

[0036] As described above, the above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for controlling an anode carbon block production line, characterized in that: include: Initial contact area and voltage drop measurement: When the iron and carbon block are in initial contact, measure the initial contact area and initial voltage drop between them; Calculation of maximum contact area: For planar contact, the theoretical maximum contact area is the smallest surface area of ​​the two; for non-planar contact, it is calculated by the tangent contact area between the arc surface and the plane; Contact surface optimization: mechanical grinding or polishing of the contact surface of iron or carbon blocks, and filling of highly conductive materials between iron and carbon blocks; Optimization verification: measure the contact area and voltage drop after optimization, and then calculate the contact area increase ratio and voltage drop reduction ratio. When the voltage drop reduction ratio is greater than the preset voltage drop reduction threshold, calculate the proportional adjustment coefficient between the contact area increase ratio and the voltage drop reduction ratio. Dynamic adjustment of contact area: compare the voltage drop reduction ratio with the preset voltage drop target reduction threshold, determine the corresponding adjusted contact area of ​​the iron or carbon block based on the comparison result, and finally increase the contact surface between the iron and the carbon block based on the adjusted contact area.

2. The anode carbon block production line control method according to claim 1, characterized in that: in, The initial contact area is measured as follows: The conductive coating method is used to coat the contact surface with conductive material, and the contact area is calculated by measuring the conductive area; The initial voltage drop is measured as follows: A constant current is applied between the iron and the carbon block, followed by a voltage measuring instrument, and the voltage difference between the two ends is measured and recorded as the initial voltage drop.

3. The anode carbon block production line control method according to claim 2, characterized in that: The calculation formula of tangent contact area is: S max =2πrh; In the formula, S max is the theoretical maximum contact area between the iron surface and the carbon block, r is the radius of the arc, and h is the contact height.

4. The anode carbon block production line control method according to claim 3, characterized in that: In the contact surface optimization step: Before mechanical grinding or polishing, the initial roughness of the contact surface of the iron or carbon block is measured by a roughness measuring instrument and recorded as R0; After mechanical grinding or polishing operation, the treated roughness of the contact surface of the iron or carbon block is measured by a roughness measuring instrument and marked as R1; Then through: , calculate the theoretical maximum contact area S1 after flattening treatment max ; In the formula, β is the preset material adaptation coefficient; Then pass: , calculate the theoretical maximum contact area S2 after the conductive material is filled max ; Where AS is the effective contact area of ​​the highly conductive material.

5. The anode carbon block production line control method according to claim 4, characterized in that: in, Graphite powder is used as the high conductivity material. The effective contact area of ​​the graphite powder is obtained by measuring the thickness and area of ​​the filling area and combining the parameters corresponding to the bulk density of the graphite powder. The specific method is as follows: Measure the thickness of the filling area: Use a thickness gauge to measure the thickness of the graphite powder filled area at multiple measuring points evenly distributed in the filling area; Measure the area of ​​the filled area: If the filled area is a rectangle, use the ruler tool to measure its length and width, and calculate the area of ​​the filled area S according to the rectangular area formula. t ; If the filled area is a circle, use a caliper to measure its diameter and calculate the filled area S according to the circle area formula. t ; Determine the bulk density of graphite powder: Determine the bulk density ρ of graphite powder by consulting relevant materials or conducting experiments on your own; Estimation of effective contact area: Assuming that the graphite powder is evenly distributed in the filling area, according to the volume formula V=S t ×h p , calculate the volume filled by graphite powder; Combined with the bulk density, the mass of graphite powder is estimated to be m=ρ×S t ×h p ; The proportional coefficient e between the effective contact area and the mass of graphite powder is determined experimentally; Then the effective contact area AS = e × m = e × ρ × S t ×h p .

6. The anode carbon block production line control method according to claim 4, characterized in that: The specific methods for optimizing verification are as follows: Step N1, measuring the optimized contact area and the optimized voltage drop in accordance with the initial contact area and voltage drop measurement method in step 1; The optimized contact area is measured in the same way as the initial contact area; The optimized voltage drop is measured in the same way as the initial voltage drop; Step N2, then: ; Calculate the contact area improvement ratio c after optimization; Step N3, then pass: ; Calculate the optimized voltage drop reduction ratio γ; In the formula, U0 is the initial voltage drop, and U1 is the optimized voltage drop; Step N4: compare the voltage drop reduction ratio γ with the preset voltage drop reduction threshold γa: When γ>γa, it means that the optimized contact area after the contact surface optimization treatment is effective. At the same time, the proportional adjustment coefficient B between the contact area increase ratio and the voltage drop reduction ratio is calculated through B=c / γ.

7. The anode carbon block production line control method according to claim 6, characterized in that: The adjusted contact area is calculated as follows: The voltage drop reduction ratio difference is obtained by subtracting the optimized voltage drop reduction ratio from the voltage drop target reduction threshold; Then, the secondary improvement ratio of the contact area is obtained by dividing the current optimized contact area by the ratio adjustment coefficient B; Then pass: ; Calculate the contact area SK corresponding to the adjusted iron or carbon block.

8. The anode carbon block production line control method according to claim 7, characterized in that: The comparison method in the dynamic adjustment of the contact area is as follows: When γ≥γm, it is determined that the current optimized contact area after the contact surface optimization process has achieved the expected effect, and no increase process is performed; When γ<γm, it is determined that the current optimized contact area after the contact surface optimization process does not achieve the expected effect, and then the process of increasing it is performed; γ is the voltage drop reduction ratio, and γm is the preset voltage drop target reduction threshold.

9. The anode carbon block production line control method according to claim 8, characterized in that: The enlargement treatment method is: processing the contact surface of the iron or carbon block into a sawtooth shape; the sawtooth processing method is as follows: Step H1, first pass: , calculate the adjustment difference SC0 of the contact area corresponding to the iron or carbon block; Step H2, on the iron or carbon block, select a plurality of evenly distributed areas of the same designated area size as sawtooth processing areas; Step H3, then cutting and grinding the processing area, and then calculating the area of ​​the processing area corresponding to the groove; Step H4, then selecting a processing area, and subtracting the area of ​​the processing area corresponding to the groove from the designated area of ​​the processing area before the groove is cut, to obtain the area difference of the processing area; Step H5, then add up the area differences of all processed areas to obtain the increased area of ​​the sawtooth contact surface; Step H6: Finally, compare the increased area of ​​the sawtooth contact surface with the adjusted difference of the contact area: When the increased area of ​​the sawtooth contact surface is greater than or equal to the adjusted difference of the contact area, it is determined that the processing of the corresponding sawtooth contact surface is completed; When the increased area of ​​the sawtooth contact surface is less than the adjusted difference of the contact area, the grooves in each processing area continue to be cut and polished until the increased area of ​​the sawtooth contact surface is greater than or equal to the adjusted difference of the contact area.

10. An anode carbon block production line control system, the system is used to implement an anode carbon block production line control method according to any one of claims 1 to 9, characterized in that: The system includes: A contact area measurement module is used to measure the initial contact area and initial voltage drop between the iron and the carbon block when the two are in initial contact; A voltage drop detection module is used to apply current and measure the initial voltage drop between the iron and the carbon block when they are in initial contact; Surface treatment module, used to control mechanical grinding or polishing operations; Conductive material filling module, used for automatic filling of graphite powder; Dynamic adjustment module to calculate and perform contact area adjustments.

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