Anode guide rod performance improving method and related equipment

Abstract

The invention discloses a method for improving the performance of an anode guide rod and related equipment, relates to the technical field of aluminum electrolysis, and mainly aims at solving the problem that the conductivity of the anode guide rod of an existing electrolytic bath is relatively low. The method comprises the steps that the anode guide rod is scanned to construct a three-dimensional model, the three-dimensional model is used for representing protruding points on the surface of the anode guide rod, and the proportion of the protruding points on the surface of the anode guide rod is determined based on the three-dimensional model; and determining a processing strategy of the anode guide rod based on a comparison relationship between the proportion of the protruding points on the surface of the anode guide rod and a preset proportion threshold value. The method is used for the performance improvement process of the anode guide rod.

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum electrolysis, and in particular to a method for improving the performance of an anode guide rod and related equipment. Background Art

[0002] Currently, the aluminum industry uses large pre-baked anode electrolytic cells to produce aluminum. With the advancement of technology, new continuous anode electrolytic cells have eliminated manual anode replacement operations, shortening the carbon anode production and aluminum liquid output processes. The continuous anode electrolysis process uses a special current-drawing mechanism. The paste is shaped and baked into anode blocks on an aluminum frame. Current is introduced through busbars and aluminum guide rods, and then evenly introduced through the aluminum frame into the anodes containing built-in conductors. During this process, the contact voltage drop between the anode guide rods and busbars, and between the guide rods and the aluminum frame, is approximately 3-20mV, which has a significant impact on the anode voltage drop and the energy consumption of the electrolytic cell. Therefore, reducing the anode voltage drop in the electrolytic cell and improving the conductivity of the anode guide rods in the electrolytic cell are key issues in achieving energy conservation and efficiency improvements in aluminum electrolysis. Summary of the Invention

[0003] In view of the above problems, the present invention provides a method for improving the performance of an anode guide rod and related equipment, the main purpose of which is to solve the problem of low electrical conductivity of the anode guide rod of the current electrolytic cell.

[0004] To solve at least one of the above technical problems, in a first aspect, the present invention provides a method for improving the performance of an anode guide rod, the method comprising:

[0005] Scanning the anode guide rod to construct a three-dimensional model, wherein the three-dimensional model is used to represent the protrusions on the surface of the anode guide rod,

[0006] determining a proportion of protrusion points on the surface of the anode guide rod based on the three-dimensional model;

[0007] The treatment strategy for the anode guide rod is determined based on a comparison between a ratio of protrusion points on the surface of the anode guide rod and a preset ratio threshold.

[0008] Optionally, scanning the anode guide rod to construct a three-dimensional model includes:

[0009] The contact surfaces of the anode guide rod, the busbar and the aluminum frame are scanned to construct a three-dimensional model.

[0010] Optionally, the determining of the anode guide rod treatment strategy based on a comparison between a ratio of protrusion points on the surface of the anode guide rod and a preset ratio threshold value includes:

[0011] When the proportion of protrusion points on the surface of the anode guide rod meets a first preset proportion threshold, performing verification processing on the anode guide rod;

[0012] When the proportion of protrusion points on the surface of the anode guide rod meets a second preset proportion threshold, performing surface grinding on the anode guide rod;

[0013] When the ratio of the protrusion points on the surface of the anode guide rod meets a third preset ratio threshold, the anode guide rod is discarded.

[0014] The first preset proportion threshold is smaller than the second preset proportion threshold, and the second preset proportion threshold is smaller than the third preset proportion threshold.

[0015] Optionally, when the proportion of protrusion points on the surface of the anode guide rod meets a first preset proportion threshold, performing verification processing on the anode guide rod includes:

[0016] Performing actual working condition simulation on the anode guide rod;

[0017] Based on the simulation results of the anode guide rod under actual working conditions, the contact resistance of the anode guide rod is determined, wherein the contact resistance is used to provide feedback on the conductive performance of the anode guide rod.

[0018] Optionally, the anode guide rod is placed horizontally, and the aluminum plate is vertically covered on the anode guide rod to form a planar contact, and the actual working condition simulation of the anode guide rod includes:

[0019] Applying vertical pressure to the aluminum plate based on a gradient pressure so that the contact surface of the aluminum plate and the anode guide rod gradually and tightly fits;

[0020] Inputting current from the current input point of the aluminum plate and flowing current through the aluminum plate to the anode guide rod;

[0021] The current is derived from the current output point of the anode guide rod to form a complete loop,

[0022] The current input point is located at one end of the aluminum plate away from the anode guide rod, and the current output point is the other end of the anode guide rod away from the aluminum plate.

[0023] Optionally, determining the contact resistance of the anode guide rod based on simulation results of the anode guide rod under actual working conditions includes:

[0024] obtaining a voltage drop between the current input point and the current output point;

[0025] The contact resistance of the anode lead is determined based on the voltage drop and the current value of the input current.

[0026] Optionally, the proportion of protrusions on the surface of the anode guide rod is determined based on the effective conductive area of the contact surface.

[0027] In a second aspect, an embodiment of the present invention further provides an anode guide rod performance improvement device, comprising:

[0028] A scanning unit is used to scan the anode guide rod to construct a three-dimensional model, wherein the three-dimensional model is used to represent the protrusion points on the surface of the anode guide rod,

[0029] a first determining unit, configured to determine a proportion of protrusion points on the surface of the anode guide rod based on the three-dimensional model;

[0030] The second determining unit is configured to determine a treatment strategy for the anode guide rod based on a comparison between a ratio of protrusion points on the surface of the anode guide rod and a preset ratio threshold.

[0031] In order to achieve the above object, according to the third aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium includes a stored program, wherein when the above program is executed by a processor, the steps of the above-mentioned anode guide rod performance improvement method are implemented.

[0032] In order to achieve the above-mentioned purpose, according to the fourth aspect of the present invention, an electronic device is provided, comprising at least one processor and at least one memory connected to the processor; wherein the above-mentioned processor is used to call the program instructions in the above-mentioned memory to execute the steps of the above-mentioned anode guide rod performance improvement method.

[0033] Through the above technical solution, the present invention takes into account that the resistance of the contact surface between the anode guide rod and the busbar and the aluminum frame is one of the important factors affecting the anode voltage drop. When the flatness of the contact surface is low, the uneven contact formed by the rough surface will reduce the actual contact area, increase the contact resistance, and cause energy loss and local heating. Therefore, how to increase the conductivity of the anode guide rod of the electrolytic cell and reduce the anode voltage drop of the electrolytic cell is one of the key issues in achieving energy saving and efficiency improvement in aluminum electrolysis. The present application accurately quantifies the distribution and height of surface protrusions through a three-dimensional model, accurately evaluates the degree of attenuation of the effective conductive area of the conductor contact surface, and dynamically adjusts the processing path of the anode guide rod through threshold grading to avoid excessive maintenance or missed defects. Its core lies in establishing a quantitative evaluation system through three-dimensional modeling and surface analysis.

[0034] Correspondingly, the anode guide rod performance improvement device, equipment and computer-readable storage medium provided by the embodiments of the present invention also have the above-mentioned technical effects.

[0035] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are specifically listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0037] Figure 1 A schematic flow chart of a method for improving the performance of an anode guide rod provided by an embodiment of the present invention is shown;

[0038] Figure 2 A schematic block diagram of the composition of an anode guide rod performance improvement device provided by an embodiment of the present invention is shown;

[0039] Figure 3 A schematic block diagram of the composition of an electronic device for improving the performance of an anode guide rod provided by an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0040] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0041] In order to solve the problem of low conductivity of the anode guide rod of the current electrolytic cell, an embodiment of the present invention provides a method for improving the performance of the anode guide rod, such as Figure 1 As shown, the method includes:

[0042] S101, scanning the anode guide rod to construct a three-dimensional model, wherein the three-dimensional model is used to represent the protrusion points on the surface of the anode guide rod,

[0043] S102, determining a proportion of protrusion points on the surface of the anode guide rod based on the three-dimensional model;

[0044] S103 : Determine a treatment strategy for the anode guide rod based on a comparison between a ratio of protrusion points on the surface of the anode guide rod and a preset ratio threshold.

[0045] Exemplarily, "scanning the anode guide rod" refers to non-contact measurement of the guide rod surface using a 3D laser scanner or industrial CT equipment to obtain coordinate point cloud data of the surface topography. Scanning accuracy should reach 0.01mm to ensure that microscopic protrusions on the guide rod surface can be captured. "Protrusion points" are defined as surface areas with a height exceeding 0.05mm relative to a reference plane, determined through normal vector analysis and curvature calculation of the point cloud data. The "3D model" is constructed using reverse engineering technology, importing the point cloud data into modeling software such as Geomagic Design X. After denoising and surface fitting, a NURBS surface model is generated, which can intuitively display the surface undulations.

[0046] During implementation, a standard reference plane for the anode guide rod must first be established. This plane is created by collecting surface data from uncorroded areas of the guide rod. The "protrusion point ratio" is calculated using a fractal dimension algorithm, dividing the model surface into 0.5mm x 0.5mm grid cells and counting the proportion of protrusion points within each cell. Preset percentage thresholds are derived from statistical analysis of a large number of historical failure cases, for example, the first threshold is set at 5%, the second at 15%, and the third at 30%. The processing strategy is determined by comparing the actual calculated value with the preset threshold range. When the protrusion point distribution spans adjacent threshold ranges, a fuzzy logic algorithm is used for weighted evaluation.

[0047] It should be understood that the above numerical values are only for reference examples and are not specific limitations.

[0048] Through the above-mentioned technical solution, the present invention considers that the resistance of the contact surface between the anode guide rod, busbar, and aluminum frame is a key factor affecting the anode voltage drop. When the contact surface is not flat, the uneven contact caused by the rough surface reduces the actual contact area, increases the contact resistance, and leads to energy loss and localized heating. Therefore, how to improve the conductivity of the anode guide rod in the electrolytic cell and reduce the anode voltage drop in the electrolytic cell is a key issue in achieving energy conservation and efficiency improvement in aluminum electrolysis. This solution achieves precise quantification of surface defects by establishing a three-dimensional digital model, breaking through the subjective limitations of traditional visual inspection. Based on the spatial distribution characteristics of surface protrusions, the degree of attenuation of the effective conductive area of the conductor contact surface can be accurately assessed. By setting multiple threshold intervals, a decision-making mechanism for graded treatment is established to avoid excessive maintenance or missed defects. 3D modeling technology can capture the microscopic surface topography and convert the distribution characteristics of contact resistance into quantifiable geometric parameters, providing a new technical approach for assessing the degradation of the conductor's conductive performance. This method transforms surface treatment decisions from empirical judgment to data-driven, improving the scientific and consistent nature of the treatment plan and effectively solving the problem of abnormal contact resistance caused by inaccurate surface roughness assessment in traditional methods. The attenuation degree of the effective conductive area of the conductor contact surface can be accurately evaluated, and the processing path of the anode guide rod can be dynamically adjusted through threshold grading to avoid excessive maintenance or missed defects.

[0049] In one embodiment, scanning the anode guide rod to construct a three-dimensional model includes:

[0050] The contact surfaces of the anode guide rod, the busbar and the aluminum frame are scanned to construct a three-dimensional model.

[0051] For example, the construction scope of the three-dimensional model of this application focuses on the contact interface between the anode guide rod and the busbar and aluminum frame. The "contact surface" specifically refers to the working surface area where the guide rod and the conductive component are in physical contact, usually the upper and lower symmetrical planes of the guide rod. During scanning, a dual-axis positioning device must be used to fix the guide rod to ensure that the contact surface is in a horizontal measurement position. The scanning path planning uses a spiral progressive trajectory, which can cover the entire contact area with a step size of 0.2MM. For contact surfaces with an oxide layer, sandblasting must be performed first to remove surface dirt and expose the metal substrate.

[0052] It should be understood that the above numerical values are only for reference examples and are not specific limitations.

[0053] Furthermore, during the modeling process, the geometric characteristic parameters of the contact surface are extracted, including flatness error, surface waviness, and micro-roughness. By comparing the theoretical contact area in the design drawings, the loss rate of the actual effective contact area is calculated. Corresponding surface quality evaluation standards are established for the different operating conditions required for the busbar contact surface and the aluminum frame contact surface. Boolean operations can be used to compare the scanned data with the standard CAD model to generate a heat map distribution of surface defects.

[0054] With the above technical solution, the three-dimensional modeling of the focused contact surface effectively improves the targeted detection and avoids interference with data collection in non-working areas. The differential analysis of the dual contact surfaces is more consistent with the current transmission characteristics under actual working conditions and can accurately identify key areas with abnormal contact resistance. The spiral scanning path combined with high-precision positioning ensures the integrity of data collection, especially the capture of microscopic defects in edge areas. The influence of the oxide layer is eliminated through surface pretreatment, ensuring that the measurement results truly reflect the state of the metal matrix. The difference comparison algorithm links the theoretical design with the actual state, providing accurate processing allowance data for subsequent processing, significantly improving the positioning accuracy of surface treatment and the control level of material removal.

[0055] In one embodiment, the determining of the anode guide rod treatment strategy based on a comparison between a ratio of protrusion points on the surface of the anode guide rod and a preset ratio threshold comprises:

[0056] When the proportion of protrusion points on the surface of the anode guide rod meets a first preset proportion threshold, performing verification processing on the anode guide rod;

[0057] When the proportion of protrusion points on the surface of the anode guide rod meets a second preset proportion threshold, performing surface grinding on the anode guide rod;

[0058] When the ratio of the protrusion points on the surface of the anode guide rod meets a third preset ratio threshold, the anode guide rod is discarded.

[0059] The first preset proportion threshold is smaller than the second preset proportion threshold, and the second preset proportion threshold is smaller than the third preset proportion threshold.

[0060] Exemplarily, the present application constructs a three-level processing decision mechanism, the core of which is to establish a quantitative correspondence between surface state and processing intensity.

[0061] The "first preset percentage threshold" can be set to a protrusion coverage ratio of less than 5% of the total contact surface area. This threshold is determined based on the tunneling effect theory of metal contact surfaces. When the protrusion coverage is below this value, the surface microscopic protrusions can form effective electron tunneling channels. The "verification process" includes dynamic contact resistance testing and structural strength verification. Specifically, the guide rod is placed in a test fixture simulating an electrolytic cell, the rated pressure is applied, and 5000A DC current is passed for 30 minutes. The monitored contact surface temperature rise does not exceed 80°C for acceptance.

[0062] For example, when verifying a guide rod with 3% protrusion points, under the conditions of 500N pressure and 300A current, the voltage drop between the input and output terminals ΔU = 0.24V is measured, and the contact resistance Rc = ΔU / I = 0.8μΩ·m is calculated. 2 The infrared thermal imager showed that the maximum temperature in the contact area was 58°C. Compared with the ambient temperature of 33°C, the temperature rise ΔT = 25K < 30K, which is the industry safety threshold.

[0063] The "second preset proportion threshold" can be set to 5-10% of the total contact surface area. This critical value is derived from the experimental data of the contact resistance mutation point. When the number of protrusions exceeds this ratio, the surface contact changes from surface contact to multi-point discrete contact, resulting in uneven current density distribution. The "surface grinding process" adopts a three-axis linkage mechanism. The X-axis is a roller wire brush (diameter 200mm, speed 3000rpm), the Y-axis is equipped with a pneumatic rotary motor (power 2.2kW), and the Z-axis is equipped with an electric lifting adjustment system (accuracy ±0.05mm). The grinding path is based on the protrusion distribution data of the three-dimensional model. The spiral progressive trajectory is generated using the equal residual height algorithm. The feed amount is controlled at 0.02-0.05mm each time to ensure that protrusions with a height exceeding 0.1mm are removed while retaining the original coating. "Through the roller wire brush, pneumatic rotary motor and electric lifting adjustment system. The height is adjusted by the electric lifting adjustment system, and the combination of the roller wire brush and the pneumatic rotary motor achieves large-area uniform grinding."

[0064] For example, during the operation of a new 300kA continuous anode electrolyzer, when a detection device indicates that the proportion of protrusions on the anode guide rod surface is 8%, which is within the range of 5% to 10%, the anode guide rod is surface treated. A roller-type wire brush is combined with a pneumatic rotary motor. The height is adjusted by the electric lifting and adjustment system, which drives the screw to lift the support plate to achieve uniform grinding over a large area of the guide rod surface. The surface treatment of anode guide rods is sometimes also done through traditional manual grinding methods. A handheld angle grinder is used in conjunction with a three-dimensional model for protrusion detection to grind the guide rod contact surface point by point. Manual grinding is flexible but inefficient and can result in uneven pressure. Mechanical devices are now mostly used as an alternative, with the preferred method being determined based on the specific situation. After the treatment is completed, the guide rod is tested for protrusions again. The detection shows that the proportion of protrusions on the surface has been reduced to 2%. The rod is then sent to a verification unit to verify the voltage drop of the guide rod.

[0065] The "third preset percentage threshold" can be set to greater than 10% of the total contact surface area. This threshold corresponds to the inflection point of material fatigue strength. When the distribution of protrusion points reaches this ratio, intergranular corrosion has occurred in the guide rod substrate. The "discarding" process is combined with material composition analysis. The scrapping process is initiated when the copper content, as measured by a handheld XRF spectrometer, falls below 99.6%. A 0.5% hysteresis band is set between each threshold to prevent oscillation in the treatment strategy under critical conditions.

[0066] By means of the above technical solution, when the proportion of the protrusion points of the guide rod is detected to be low (less than 5%), the guide rod is verified, the resistance and contact resistance of the guide rod itself are detected, and the optimal connection position is determined. When the proportion of the protrusion points of the guide rod is detected to be between 5% and 10%, the guide rod is sent to the processing unit, and the surface protrusions are targetedly reduced through surface treatment methods such as grinding and polishing, and then the guide rod is sent back to the protrusion detection unit and the grading unit for detection and grading. When the proportion of the protrusion points of the guide rod exceeds 10%, it means that the conductive performance of the guide rod no longer meets the standards of the upper slot, and this part of the guide rod will form uneven contact with the busbar and the aluminum frame, the contact resistance and the anode voltage drop will increase, the energy consumption of the aluminum electrolysis process will increase dramatically, the anode consumption will be accelerated, and the anode guide rod will be discarded.

[0067] In one embodiment, a 0.5% hysteresis interval is set between the first preset proportion threshold, the second preset proportion threshold and the third preset proportion threshold. When the proportion of the protrusion point is in the hysteresis band of the adjacent threshold interval, the processing strategy of the previous cycle is adopted.

[0068] Exemplarily, the above-mentioned judgment threshold sets a 0.5% hysteresis interval. For example, when the proportion of protrusion points increases from 4.8% to 5.3%, the judgment is still maintained at <5%; when the proportion increases from 9.8% to 10.3%, it is still processed as ≤10%. The hysteresis algorithm is implemented by sliding window filtering, and the window width is set to 10 detection cycles. This application avoids frequent switching of critical states by setting a 0.5% hysteresis band in the judgment interval.

[0069] It should be understood that the above numerical values are only for reference examples and are not specific limitations.

[0070] The above solution establishes a precise disposal trigger mechanism through a three-level threshold system, and divides the repairability level of the guide rod through quantitative indicators. The verification processing link directly links the microscopic morphological features with the actual conductive performance, avoiding the misjudgment that may be caused by simple morphological analysis. The dynamic grinding strategy achieves precise control of the amount of material removed, while restoring the flatness of the contact surface while retaining the effective conductive layer to the maximum extent. The scientific setting of the discarded threshold avoids the reuse of defective parts and fundamentally eliminates the safety hazards caused by hot spots on the contact surface. The hysteresis band design enhances the stability of the decision-making system and ensures that the processing strategy will not be frequently switched due to detection errors.

[0071] In one embodiment, when the proportion of protrusion points on the surface of the anode guide rod meets a first preset proportion threshold, performing verification processing on the anode guide rod includes:

[0072] Performing actual working condition simulation on the anode guide rod;

[0073] Based on the simulation results of the anode guide rod under actual working conditions, the contact resistance of the anode guide rod is determined, wherein the contact resistance is used to provide feedback on the conductive performance of the anode guide rod.

[0074] For example, the core of the aforementioned verification process involves establishing an equivalent simulation system for laboratory-based operating conditions. This "actual operating condition simulation" must be conducted within a sealed, anti-oxidation chamber, maintained within an argon atmosphere to prevent secondary surface oxidation. The simulation device includes a hydraulic servo system with a pressure control accuracy of ±2kN, capable of simulating the actual clamping force variations of the electrolytic cell fixture. Contact resistance is measured using a four-wire measurement technique, with platinum electrodes welded to each end of the guide rod to eliminate the effects of contact impedance.

[0075] In specific implementation, a pressure load spectrum simulation was first performed, applying a pressure cycle according to the typical electrolyzer startup-operation-shutdown conditions. Each pressure step was maintained for 60 seconds to allow sufficient deformation of the contact surface. Simultaneously, an infrared thermal imager was used to monitor the temperature distribution in the contact area. The calculation of the "contact resistance" excludes the bulk resistance component. By measuring the dynamic resistance values under different pressures, a resistance-pressure characteristic curve was plotted, and the minimum value in the stable section of the curve was used as the evaluation benchmark.

[0076] Based on the above scheme, a closed argon environment simulates the inert atmosphere of the electrolytic cell, ensuring a high degree of consistency between the test results and the actual working conditions. The hydraulic servo system accurately reproduces the dynamic characteristics of the fixture's clamping force, making the contact surface deformation process consistent with the creep effect in actual use. The four-wire measurement technology eliminates the interference of lead resistance and accurately extracts the pure contact impedance component. Dynamic resistance monitoring can capture the nonlinear conductive characteristics of the contact interface and provide transient response data for performance evaluation. The establishment of the pressure-resistance curve reveals the mapping relationship between surface morphology and conductive properties, providing a theoretical basis for the optimization of subsequent processing strategies.

[0077] In one embodiment, the anode guide rod is placed horizontally, and the aluminum plate is vertically covered on the anode guide rod to form a planar contact. The actual working condition simulation of the anode guide rod includes:

[0078] Applying vertical pressure to the aluminum plate based on a gradient pressure so that the contact surface of the aluminum plate and the anode guide rod gradually and tightly fits;

[0079] Inputting current from the current input point of the aluminum plate and flowing current through the aluminum plate to the anode guide rod;

[0080] The current is derived from the current output point of the anode guide rod to form a complete loop,

[0081] The current input point is located at one end of the aluminum plate away from the anode guide rod, and the current output point is the other end of the anode guide rod away from the aluminum plate.

[0082] For example, the guide rod is usually a long metal rod, which is placed horizontally in the verification unit to simulate its actual installation direction in the electrolytic cell (connecting the busbar and the anode block). The aluminum plate is made of the same material as the aluminum frame of the electrolytic cell and vertically covers the upper surface of the guide rod (i.e., the contact surface between the guide rod and the busbar / aluminum frame) to form a planar contact. Vertical pressure is applied by a pressure controller (such as a hydraulic or pneumatic device) to make the contact surface of the aluminum plate and the guide rod fit tightly. Point A is located at the end of the aluminum plate away from the guide rod (for example, the right end of the aluminum plate) as the current input point. The current is introduced from here and flows through the aluminum plate to the guide rod. Point B is located at the other end of the guide rod away from the aluminum plate (for example, the left end of the guide rod) as the current output point. The current is extracted from this point of the guide rod to form a complete loop. The current starts from the DC power supply → enters point A of the aluminum plate → passes through the contact surface between the aluminum plate and the guide rod → flows into the guide rod → flows out from point B of the guide rod → returns to the power supply to form a closed loop. This arrangement physically simulates the electrolytic cell's conductive flow path, combining multi-dimensional testing with pressure, current, and temperature to comprehensively evaluate the conductive performance of the guide rod's contact surface. The core logic behind this approach is that "the tighter the pressure and the higher the current, the more stable the contact must be." This ultimately ensures that the guide rod, once installed in the cell, conducts current efficiently and safely, minimizing energy loss.

[0083] Specifically, this application has constructed a test method for the dynamic characteristics of the contact interface through the optimization design of gradient pressure loading and current path. The "gradient pressure" is loaded in four levels of 50N, 100N, 200N, and 500N, and the pressure is maintained for 120 seconds at each level. The current input adopts a step-by-step increase mode, with an initial current of 2A and an increase to 300A at a rate of 10A / 10s. During the temperature test phase, under the conditions of a pressure of 500N and a current of 300A, the temperature is raised to 150°C at 5°C / min by a resistance heating device, and the temperature coefficient α of the contact resistance is simultaneously collected. The aluminum plate is made of the same 1060 pure aluminum as the aluminum frame, with a thickness of 8±0.1mm, and the surface is diamond turned to achieve a mirror polish of Ra≤0.1μm. A water cooling channel is set on the edge of the aluminum plate (coolant flow rate 2L / min), and the input electrode uses a split copper fixture with a contact area ≥80% of the aluminum plate end face to ensure that the contact interface is only affected by the microscopic fluctuations on the guide rod surface.

[0084] The arrangement of the above current input points follows the principle of minimum loop impedance. Water-cooled copper electrodes are set at the non-contact end of the aluminum plate, and the input current density is controlled at 3A / mm 2 The output end of the guide rod uses a split conductive fixture, with multiple sets of spring contacts to ensure the stability of high current transmission. During the test, the pressure loading and current application must be synchronized, and power can only be applied after the pressure stabilizes for 5 seconds to avoid arcing caused by dynamic contact.

[0085] It should be understood that the above numerical values are only for reference examples and are not specific limitations.

[0086] Through the above scheme, stepped pressure loading simulates the progressive locking process of the electrolytic cell fixture, causing controllable plastic deformation of the microscopic protrusions on the contact surface. The mirror treatment of the aluminum plate eliminates the interference of the surface roughness of the mating part on the test results, so that the measurement data truly reflects the conductive properties of the guide rod surface. The water-cooled electrode design ensures the thermal stability of the test process and avoids changes in material properties caused by temperature rise on the contact surface. The timing control mechanism effectively prevents measurement errors of dynamic contact resistance and ensures that data acquisition is in quasi-static equilibrium conditions. This test method provides a repeatable and standardized process for the precise determination of contact resistance.

[0087] In one embodiment, determining the contact resistance of the anode guide rod based on simulation results of the anode guide rod under actual working conditions includes:

[0088] obtaining a voltage drop between the current input point and the current output point;

[0089] The contact resistance of the anode lead is determined based on the voltage drop and the current value of the input current.

[0090] For example, the present application relates to a method for accurately measuring contact resistance, the key of which is to establish a physical model of voltage drop and current value. The "voltage drop" is measured using a high-precision digital multimeter (such as the Keysight 3458A), with two platinum probes placed between the current input and output points, and the probe spacing is precisely controlled to 50mm. Electromagnetic interference must be shielded during measurement, and twisted-pair shielded cables are used to transmit signals. The sampling frequency is set to 10kHz to capture transient fluctuations. The "current value" is collected in real time using a Hall effect sensor (such as the LEM ITN 600-S), with a range covering 0-10kA and a linearity error of less than 0.1%.

[0091] It should be understood that the above numerical values are only for reference examples and are not specific limitations.

[0092] During the calculation process, the raw data is first processed using a Kalman filter to eliminate random noise. The rod body resistance is obtained by measuring the rod resistance in a non-contact state. For non-uniform contact, a piecewise integration method is used to divide the rod into several microelements. The contact resistance of each microelement is calculated using the local current density and potential gradient, and the total contact resistance is finally obtained using the superposition principle.

[0093] Through the above scheme, this application completely eliminates the lead resistance error in the traditional two-wire method by physically isolating the measurement point from the current path. Dynamic filtering technology effectively suppresses electromagnetic interference and contact noise, bringing the measurement resolution to the micro-ohm level. The piecewise integral model accurately describes the spatial distribution characteristics of the contact resistance, and is particularly suitable for non-uniform contact scenarios with local hot spots or oxidation spots. This technology improves the measurement accuracy of contact resistance by an order of magnitude, provides a reliable quantitative basis for the formulation of subsequent processing strategies, and fundamentally solves the problem of misjudgment caused by measurement errors in traditional methods.

[0094] In one embodiment, the proportion of protrusions on the surface of the anode guide rod is determined based on the effective conductive area of the contact surface.

[0095] For example, this application defines the core calculation basis for the proportion of protrusion points, which is essentially to establish a mapping relationship between geometric morphology and conductive properties. The "effective conductive area" is defined as the microscopic area on the contact surface where metal-metal direct contact can be formed. Two conditions must be met: 1. The thickness of the surface oxide layer is less than the mean free path of electrons (3.8nm for copper); 2. The local contact pressure exceeds the yield strength of the material (70MPa for copper). The actual contact area of each protrusion point is calculated by analyzing the surface curvature of the three-dimensional model and combining it with the Hertz contact theory.

[0096] During implementation, material properties were first assigned to the 3D model. The elastic modulus of the copper guide rod was set to 110 GPa, and the Poisson's ratio to 0.34. The contact pressure distribution was simulated using the finite element method. When the local pressure exceeded 70 MPa, the effective contact area was determined. The oxide layer thickness was calibrated offline using a spectroscopic ellipsometer, and a database of correspondences between surface color (RGB values) and oxide layer thickness was established. Ultimately, the effective conductive area was determined.

[0097] It should be understood that the above numerical values are only for reference examples and are not specific limitations.

[0098] Based on the above scheme, this application breaks through the limitations of traditional geometric area calculations and defines the effective conductive area based on the physical nature of electron transport. By introducing material mechanical parameters and oxidation state analysis, it accurately reflects the microscopic morphology of the actual conductive channel. Finite element simulation reveals the nonlinear characteristics of the contact pressure distribution and can identify hidden microscopic conductive channels. This technology converts the geometric parameters of the surface morphology into predictive indicators of electrical performance, achieving a qualitative shift from morphological analysis to functional evaluation, and providing a physical basis for evaluating the service performance of conductors.

[0099] Furthermore, as a response to the above Figure 1 In order to realize the method shown in the figure, the embodiment of the present invention also provides an anode guide rod performance improvement device for the above Figure 1 This device embodiment corresponds to the aforementioned method embodiment. For ease of reading, this device embodiment will not describe the details of the aforementioned method embodiment one by one, but it should be clear that the device in this embodiment can implement all the contents of the aforementioned method embodiment. Figure 2 As shown, the device includes: a scanning unit 21, a first determining unit 22 and a second determining unit 23, wherein

[0100] The scanning unit 21 is used to scan the anode guide rod to construct a three-dimensional model, wherein the three-dimensional model is used to represent the protrusion points on the surface of the anode guide rod.

[0101] A first determining unit 22 is configured to determine a ratio of protrusion points on the surface of the anode guide rod based on the three-dimensional model;

[0102] The second determining unit 23 is configured to determine a treatment strategy for the anode guide rod based on a comparison between a ratio of protrusion points on the surface of the anode guide rod and a preset ratio threshold.

[0103] The processor includes a core, which retrieves the corresponding program unit from the memory. One or more cores can be provided. By adjusting the core parameters, a method for improving the performance of the anode guide rod can be implemented to solve the problem of low conductivity of the anode guide rod in the current electrolytic cell.

[0104] An embodiment of the present invention provides a computer-readable storage medium, which includes a stored program. When the program is executed by a processor, the method for improving the performance of the anode guide rod is implemented.

[0105] An embodiment of the present invention provides a processor, which is used to run a program, wherein the anode guide rod performance improvement method is executed when the program is run.

[0106] An embodiment of the present invention provides an electronic device, comprising at least one processor and at least one memory connected to the processor; wherein the processor is configured to call program instructions in the memory to execute the anode guide rod performance improvement method as described above.

[0107] An embodiment of the present invention provides an electronic device 30, such as Figure 3 As shown, the electronic device includes at least one processor 301, and at least one memory 302 and a bus 303 connected to the processor; wherein the processor 301 and the memory 302 communicate with each other through the bus 303; the processor 301 is used to call the program instructions in the memory to execute the above-mentioned anode guide rod performance improvement method.

[0108] The intelligent electronic devices in this article can be PCs, PADs, mobile phones, etc.

[0109] The present application also provides a computer program product, which, when executed on a process management electronic device, is suitable for executing a program that initializes the steps of the above-mentioned anode guide rod performance improvement method.

[0110] It should be noted that, in the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0111] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0112] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded computer, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0113] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0114] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0115] The present application also provides a computer program product, which includes computer software instructions. When the computer software instructions are executed on a processing device, the processing device is caused to execute the following Figure 1 This corresponds to the flow of memory control in the embodiment.

[0116] A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that a computer can store or a data storage device such as a server or data center that includes one or more available media integrated. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state drive (SSD)).

[0117] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0118] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

[0119] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0120] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0121] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0122] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for improving the performance of an anode guide rod, characterized in that: include: Scanning the anode guide rod to construct a three-dimensional model, wherein the three-dimensional model is used to represent the protrusions on the surface of the anode guide rod, determining a proportion of protrusion points on the surface of the anode guide rod based on the three-dimensional model; The treatment strategy for the anode guide rod is determined based on a comparison between a ratio of protrusion points on the surface of the anode guide rod and a preset ratio threshold.

2. The method according to claim 1, characterized in that The scanning of the anode guide rod to construct a three-dimensional model includes: The contact surfaces of the anode guide rod, the busbar and the aluminum frame are scanned to construct a three-dimensional model.

3. The method according to claim 1, characterized in that The determining of the anode guide rod treatment strategy based on a comparison between a ratio of protrusion points on the surface of the anode guide rod and a preset ratio threshold comprises: When the proportion of protrusion points on the surface of the anode guide rod meets a first preset proportion threshold, performing verification processing on the anode guide rod; When the proportion of protrusion points on the surface of the anode guide rod meets a second preset proportion threshold, performing surface grinding on the anode guide rod; When the ratio of the protrusion points on the surface of the anode guide rod meets a third preset ratio threshold, the anode guide rod is discarded. The first preset proportion threshold is smaller than the second preset proportion threshold, and the second preset proportion threshold is smaller than the third preset proportion threshold.

4. The method according to claim 3, characterized in that When the proportion of protrusion points on the surface of the anode guide rod meets a first preset proportion threshold, performing verification processing on the anode guide rod includes: Performing actual working condition simulation on the anode guide rod; Based on the simulation results of the anode guide rod under actual working conditions, the contact resistance of the anode guide rod is determined, wherein the contact resistance is used to provide feedback on the conductive performance of the anode guide rod.

5. The method according to claim 4, characterized in that The anode guide rod is placed horizontally, and the aluminum plate is vertically covered on the anode guide rod to form a plane contact. The actual working condition simulation of the anode guide rod includes: Applying vertical pressure to the aluminum plate based on a gradient pressure so that the contact surface of the aluminum plate and the anode guide rod gradually and tightly fits; Inputting current from the current input point of the aluminum plate and flowing current through the aluminum plate to the anode guide rod; The current is derived from the current output point of the anode guide rod to form a complete loop, The current input point is located at one end of the aluminum plate away from the anode guide rod, and the current output point is the other end of the anode guide rod away from the aluminum plate.

6. The method according to claim 5, characterized in that The determining the contact resistance of the anode guide rod based on the simulation result of the anode guide rod in the actual working condition includes: obtaining a voltage drop between the current input point and the current output point; The contact resistance of the anode lead is determined based on the voltage drop and the current value of the input current.

7. The method according to claim 1, characterized in that The proportion of protrusions on the surface of the anode guide rod is determined based on the effective conductive area of the contact surface.

8. An anode guide rod performance improvement device, characterized in that: Also includes: A scanning unit is used to scan the anode guide rod to construct a three-dimensional model, wherein the three-dimensional model is used to represent the protrusion points on the surface of the anode guide rod, a first determining unit, configured to determine a proportion of protrusion points on the surface of the anode guide rod based on the three-dimensional model; The second determining unit is configured to determine a treatment strategy for the anode guide rod based on a comparison between a ratio of protrusion points on the surface of the anode guide rod and a preset ratio threshold.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium includes a stored program, wherein when the program is executed by a processor, the steps of the anode guide rod performance improvement method according to any one of claims 1 to 7 are implemented.

10. An electronic device, characterized in that: The electronic device includes at least one processor and at least one memory connected to the processor; wherein the processor is used to call program instructions in the memory to execute the steps of the anode guide rod performance improvement method according to any one of claims 1 to 7.

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