A method for aluminum electrolytic anode steel shoe pressure drop comparison measurement

Abstract

This invention discloses a method for comparative measurement of voltage drop in aluminum electrolysis anode steel claws, comprising the following steps: setting test points, controlling temperature, measurement, and comparison. The beneficial effects of this invention are: after different anode steel claws operate with the same current for a period of time, the heat generated when the current passes through different anode steel claws and guide rods becomes more similar, and the temperatures of different anode steel claws become closer, effectively reducing the influence of temperature differences on resistance measurement. Compared with the results obtained at room temperature, the results are closer to actual working conditions, and accurate voltage drop comparison results can be obtained, achieving the advantage of high accuracy in steel claw voltage drop measurement.

Description

Technical Field

[0001] This invention relates to the technical field of anode steel claw voltage drop measurement, and specifically to a method for comparative measurement of anode steel claw voltage drop in aluminum electrolysis. Background Technology

[0002] The anode claw is a crucial conductive component of the electrolytic cell. It is connected to the aluminum electrolysis busbar via the anode guide rod. Current flows from the aluminum electrolysis busbar through the anode guide rod and anode claw into the anode carbon block, entering the molten aluminum to participate in the electrochemical reaction. During electrode switching and anode distance adjustment, a multi-functional overhead crane moves the anode guide rod, which in turn moves the anode claw, thus completing the electrode switching and anode distance adjustment functions.

[0003] The anode steel claws themselves possess a certain resistance, and the voltage drop they generate affects the operating voltage of the electrolytic cell. Excessive voltage drop leads to wasted energy. During use, the anode steel claws undergo oxidation, peeling, and electrolyte erosion, resulting in a typical service life of about 8 months. When the claws are worn down by 10%, companies generally cut them off from the anode guide rod and re-weld new claws. Different welding techniques affect the resistance of the claws. Furthermore, some electrolytic aluminum companies choose claws with different structures, materials, and sizes to reduce voltage drop. To verify the voltage drop values ​​of claws with different welding techniques, materials, structures, and sizes, it is necessary to measure the resistance of the claws and compare their voltage drops.

[0004] Chinese utility model patent CN223362250U discloses a clamp-type aluminum electrolytic cell anode voltage drop measuring device, relating to the field of anode measurement in aluminum electrolytic cells. It includes a measuring instrument, a clamping assembly for fixing, a first detection unit and a second detection unit disposed on the clamping assembly, and a position control assembly disposed on the clamping assembly. The first and second detection units on the clamping assembly are respectively connected to the upper and lower surfaces of the anode carbon block. The measuring instrument is then connected to the first and second detection units to achieve voltage drop measurement of the anode carbon block. This eliminates the cumbersome operation of holding the measuring tool and measuring instrument for each measurement, making it more convenient to use.

[0005] Currently, the voltage drop measurement of the anode steel claws in electrolytic cells is conducted under non-use conditions and at room temperature. When the anode steel claws are in use, the temperature reaches approximately 300 degrees Celsius, and the voltage drop value of the steel changes significantly with temperature. Therefore, the measured value at room temperature deviates considerably from the value under use conditions, making accurate comparison of the steel claw voltage drop value impossible. Thus, the existing technology suffers from poor accuracy in measuring the steel claw voltage drop. Summary of the Invention

[0006] To address the aforementioned technical problems, the present invention aims to provide a method for comparative measurement of voltage drop in the steel claws of aluminum electrolysis anodes, comprising the following steps: setting test points, controlling temperature, measuring, and comparing. This method for comparative measurement of voltage drop in the steel claws of aluminum electrolysis anodes has the advantage of high accuracy in measuring the voltage drop of the steel claws.

[0007] To achieve the above-mentioned objectives, the technical solution adopted by the present invention is as follows:

[0008] A method for comparative measurement of voltage drop in the steel claws of aluminum electrolysis anodes includes the following steps:

[0009] S1. Set up test points: Select at least two different anode steel claws, set up the power input test point at the end of the anode steel claw close to the anode guide rod, and set up the power output test point at the end of the anode steel claw away from the anode guide rod;

[0010] S2. Temperature control: Install different anode steel claws into the same electrolytic cell, use a multi-functional overhead crane to drive the anode guide rod to move vertically, adjust the electrode distance of different anode steel claws so that the current passing through different anode steel claws is the same, and then run for t time;

[0011] S3. Measurement: Test the voltage between the input test point and the output test point on different anode steel claws to obtain two sets of voltage drop measurement values;

[0012] S4. Comparison: Compare the magnitudes of the two sets of voltage drop measurements. The anode steel claw with the smaller voltage drop measurement value generates a smaller voltage drop during the operation of the electrolytic cell.

[0013] Preferably, step S1 further includes the following step:

[0014] An input conductive rod is fixedly connected to the input test point, and an output conductive rod is fixedly connected to the output test point. A conductive plate is fixedly connected to the input conductive rod.

[0015] Step S3 further includes the following steps:

[0016] A voltage drop data acquisition device is employed, comprising a crossbeam, a guide rail, and a data acquisition trolley. The guide rail is fixedly mounted on the crossbeam and extends along the arrangement direction of the output conductive rods. The data acquisition trolley is slidably connected to the guide rail. An output acquisition actuator is fixedly mounted on the data acquisition trolley, and an output conductive block for abutting against the output conductive rod is fixedly mounted on the driving end of the output acquisition actuator. An input acquisition actuator is fixedly mounted on the data acquisition trolley, and an insulating rod is fixedly mounted on the driving end of the input acquisition actuator. An input conductive block for abutting against a conductive plate is fixedly mounted on the insulating rod. A voltage measuring element is mounted on the data acquisition trolley, and the voltage measuring element is electrically connected to both the input conductive block and the output conductive block.

[0017] Preferably, step S3 further includes the following step:

[0018] The data acquisition trolley slides on the guide rail, moving the output conductive block to a position close to the output conductive rod and the input conductive block to a position close to the conductive plate. The output acquisition actuator and the input acquisition actuator are used to complete the data acquisition action.

[0019] The data acquisition action includes: the power-out acquisition actuator moves the power-out conductive block toward the power-out conductive rod, so that the power-out conductive block abuts against the power-out conductive rod; the power-in acquisition actuator moves the power-in conductive block toward the power-in conductive rod, so that the power-in conductive block abuts against the power-in conductive rod; at this time, the voltage measuring element is electrically connected to the power-in test point and the power-out test point respectively; the voltage measuring element is used to measure the voltage between the power-in test point and the power-out test point; then the power-out acquisition actuator moves the power-out conductive block away from the power-out conductive rod, and the power-in acquisition actuator moves the power-in conductive block away from the power-in conductive rod.

[0020] Preferably, the crossbeam is rotatably connected to a lead screw, the lead screw is threadedly connected to the acquisition sliding carriage, and the crossbeam is fixedly mounted with a drive component whose output shaft is fixedly connected to the lead screw;

[0021] Step S3 further includes the following steps:

[0022] The driving component drives the lead screw to rotate, and the lead screw drives the acquisition trolley to slide on the guide rail as it rotates.

[0023] Preferably, the voltage drop data acquisition device further includes a control module, which is electrically connected to the power output acquisition actuator, the power input acquisition actuator, the drive element, and the voltage measurement element.

[0024] Step S3 further includes the following steps:

[0025] The control module controls the drive unit to rotate the lead screw, so that the output conductive block moves to a position close to the output conductive rod and then the drive unit stops moving. The control module controls the output acquisition actuator to move the output conductive block, and the control module controls the input acquisition actuator to move the input conductive block.

[0026] Preferably, the acquisition sliding vehicle is fixedly equipped with a laser emitter and a laser receiver. The laser emitter is used to emit laser light to the laser receiver. The laser emitter and the laser receiver are located on both sides of the power output conductive rod. The laser receiver is electrically connected to the control module. When the laser light is blocked by the power output conductive rod, the laser receiver cannot receive the laser light and sends a trigger signal to the control module.

[0027] Step S3 further includes the following steps:

[0028] The laser emitter and laser receiver move with the data acquisition trolley. When the power supply rod is between the laser emitter and the laser receiver, the power supply rod blocks the laser emitted by the laser emitter to the laser receiver. The laser receiver sends a trigger signal to the control module, which then controls the power acquisition actuator and the power input actuator to complete one data acquisition action. The control module then controls the drive unit to continue operating, driving the data acquisition trolley to continue moving.

[0029] Preferably, the guide rail is provided with clearance spaces at both ends;

[0030] Step S2 further includes the following steps:

[0031] The sampling slide car is moved into the avoidance space, so that the sampling slide car and the anode steel claw are vertically offset.

[0032] Preferably, step S1 further includes the following step:

[0033] The anode steel claw is equipped with multiple electrical test points.

[0034] Preferably, step S2 further includes the following step:

[0035] Insulation material is laid on the anode steel claws, and the thickness of the insulation material is adjusted to make the temperature of different anode steel claws the same.

[0036] Compared with the prior art, the present invention has achieved beneficial technical effects:

[0037] 1. When different anode steel claws are run with the same current for a period of time, the heat generated when the current passes through different anode steel claws and guide rods is more similar. The temperature of different anode steel claws is similar, which effectively reduces the influence of temperature difference on resistance measurement. Compared with the results obtained at room temperature, the results are closer to the actual working conditions, and accurate voltage drop comparison results can be obtained, achieving the advantage of high accuracy in steel claw voltage drop measurement.

[0038] 2. By installing different anode steel claws into the same electrolytic cell, it is possible to ensure that the different anode steel claws are under the same temperature environment, further reducing the impact of temperature differences on the measurement results and improving the accuracy of voltage drop comparison measurement.

[0039] 3. By adjusting the electrode spacing, the current passing through different anode steel claws is made the same. According to the principle that voltage equals current multiplied by resistance, when the current is the same, the voltage drop difference of the anode steel claws directly reflects the resistance difference of the anode steel claws. The magnitude of the voltage drop can be directly compared to obtain the magnitude of the resistance of different anode steel claws, thus achieving the function of accurately comparing the voltage drop of different anode steel claws. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the voltage drop data acquisition device in an embodiment of the present invention;

[0041] Figure 2 This is a schematic diagram of the structure of the data acquisition sliding steer vehicle in an embodiment of the present invention;

[0042] Figure 3 This is a schematic diagram of the connection structure between the control module and the voltage measuring element, the driving element, the power input acquisition action element, the power output acquisition action element and the laser receiver in an embodiment of the present invention.

[0043] The technical features referred to by the various reference numerals in the accompanying drawings are as follows:

[0044] 11. Crossbeam; 12. Guide rail; 13. Lead screw; 14. Drive component; 15. Clearance space; 21. Acquisition sliding trolley; 22. Power-out acquisition actuator; 23. Power-out conductive block; 24. Power-in acquisition actuator; 25. Insulating rod; 26. Power-in conductive block; 27. Laser emitter; 28. Laser receiver; 31. Control module; 32. Voltage measuring element; 41. Guide rod; 42. Anode steel claw; 43. Power-in test point; 44. Power-in conductive rod; 45. Conductive plate; 46. Power-out test point; 47. Power-out conductive rod. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the embodiments. However, the scope of protection of this invention is not limited to the specific embodiments described below.

[0046] refer to Figure 1-3 A method for comparative measurement of voltage drop of steel claws in aluminum electrolysis anodes is disclosed. The method employs a voltage drop data acquisition device, which includes a crossbeam 11, a guide rail 12, a data acquisition trolley 21, and a control module 31. The guide rail 12 is fixedly mounted on the crossbeam 11 and extends along the arrangement direction of the output conductive rods 47. The data acquisition trolley 21 is slidably connected to the guide rail 12. An output acquisition actuator 22 is fixedly mounted on the data acquisition trolley 21. An output conductive block 23 for contacting the output conductive rods 47 is fixedly mounted on the drive end of the output acquisition actuator 22. An input acquisition actuator 24 is fixedly mounted on the data acquisition trolley 21. An insulating rod 25 is fixedly mounted on the drive end of the input acquisition actuator 24. An input conductive block 26 for contacting the conductive plate 45 is fixedly mounted on the insulating rod 25. A voltage measuring element 32 is mounted on the data acquisition trolley 21 and is electrically connected to the input conductive block 26 and the output conductive block 23, respectively. A lead screw 13 is rotatably connected to the crossbeam 11, and the lead screw 13 is threadedly connected to the acquisition sliding carriage 21. A drive component 14, which is fixedly connected to the lead screw 13, is fixedly installed on the crossbeam 11. The drive component 14 is a motor. Alternating spaces 15 are provided at both ends of the guide rail 12.

[0047] In this embodiment, the control module 31 uses an STM32MP135 microprocessor. The control module 31 is electrically connected to the power-out acquisition actuator 22, the power-in acquisition actuator 24, the drive unit 14, and the voltage measuring element 32. Both the power-out acquisition actuator 22 and the power-in acquisition actuator 24 are cylinders, each equipped with a solenoid valve for controlling the airflow. The control module 31 is electrically connected to the solenoid valve and controls the airflow through it, thereby controlling the movement of the power-out acquisition actuator 22 and the power-in acquisition actuator 24. The drive unit 14 has a motor controller. The control module 31 sends control information to the motor controller, causing the motor controller to control the operation of the drive unit 14. The voltage measuring element 32 is a voltmeter, which has an analog-to-digital converter (ADC). The ADC is electrically connected to both the voltmeter and the control module 31. During measurement, the voltmeter sends an analog signal to the ADC, which converts the analog signal into a digital signal and sends it to the control module 31, enabling the control module 31 to collect measurement data. The laser steer 21 is fixedly equipped with a laser emitter 27 and a laser receiver 28. The laser emitter 27 emits laser light to the laser receiver 28. The laser emitter 27 and the laser receiver 28 are located on both sides of the power output conductive rod 47. The laser receiver 28 is electrically connected to the control module 31. The laser receiver 28 is equipped with an analog-to-digital converter to convert the analog signal generated by the laser receiver 28 into a digital signal and send it to the control module 31, thus realizing communication between the laser receiver 28 and the control module 31. When the laser light is blocked by the power output conductive rod 47, the laser receiver 28 cannot receive the laser light and sends a trigger signal to the control module 31.

[0048] The method includes the following steps:

[0049] S1. Setting test points: Select at least two different anode steel claws, set an input test point 43 at the end of the anode steel claw close to the anode guide rod, and set an output test point 46 at the end of the anode steel claw away from the anode guide rod. The anode steel claw has multiple output test points 46. An input conductive rod 44 is fixedly connected to the input test point 43, and an output conductive rod 47 is fixedly connected to the output test point 46. A conductive plate 45 is fixedly connected to the input conductive rod 44.

[0050] S2. Temperature Control: Different anode steel claws are installed in the same electrolytic cell. A multi-functional overhead crane is used to move the anode guide rod vertically, adjusting the electrode distance of the different anode steel claws to ensure that the current passing through each anode steel claw is the same. The cell is then run for time t; in this embodiment, time t is 5 hours. The sampling sliding carriage 21 is moved into the clearance space 15, so that the sampling sliding carriage 21 and the anode steel claws are vertically offset. Insulation material is laid on the anode steel claws, and the thickness of the insulation material is adjusted to ensure that the temperature of the different anode steel claws is the same.

[0051] S3. Measurement: Test the voltage between the input test point 43 and the output test point 46 on different anode steel claws to obtain two sets of voltage drop measurement values;

[0052] The data acquisition trolley 21 slides on the guide rail 12, causing the output conductive block 23 to move closer to the output conductive rod 47, and the input conductive block 26 to move closer to the conductive plate 45. The output acquisition actuator 22 and the input acquisition actuator 24 are used to complete the data acquisition action. The data acquisition process is as follows: the output acquisition actuator 22 drives the output conductive block 23 to move towards the output conductive rod 47, so that the output conductive block 23 abuts against the output conductive rod 47, and the input acquisition actuator 24 drives the input conductive block 26 to move towards the conductive plate 45. The current-infeed conductive rod 44 is moved to make the current-infeed conductive block 26 abut against the current-infeed conductive rod 44. At this time, the voltage measuring element 32 is electrically connected to the current-infeed test point 43 and the current-outfeed test point 46 respectively. The voltage measuring element 32 is used to measure the voltage between the current-infeed test point 43 and the current-outfeed test point 46. Then, the current-outfeed acquisition actuator 22 drives the current-outfeed conductive block 23 to move away from the current-outfeed conductive rod 47, and the current-infeed acquisition actuator 24 drives the current-infeed conductive block 26 to move away from the current-infeed conductive rod 44.

[0053] The drive unit 14 drives the lead screw 13 to rotate, and the lead screw 13 drives the acquisition sliding carriage 21 to slide on the guide rail 12 when it rotates.

[0054] The drive unit 14 can drive the lead screw 13 to rotate, thereby enabling the acquisition and sliding carriage 21 to move on the guide rail 12.

[0055] The control module 31 controls the drive unit 14 to drive the lead screw 13 to rotate, so that when the output conductive block 23 moves to a position close to the output conductive rod 47, the drive unit 14 stops moving. The control module 31 controls the output acquisition action unit 22 to drive the output conductive block 23 to move, and the control module 31 controls the input acquisition action unit 24 to drive the input conductive block 26 to move.

[0056] The control module 31 can control the movement of the acquisition trolley 21 and the data acquisition action without the need for manual control by the operator, which further reduces the workload of the operator and improves the measurement efficiency.

[0057] The laser emitter 27 and the laser receiver 28 move with the acquisition trolley 21. When the power output rod 47 is located between the laser emitter 27 and the laser receiver 28, the power output rod 47 blocks the laser emitted by the laser emitter 27 to the laser receiver 28. The laser receiver 28 sends a trigger signal to the control module 31, which triggers the control module 31 to control the power acquisition actuator and the power input acquisition actuator 24 to complete one data acquisition action. The control module 31 then controls the drive unit 14 to continue operating, driving the acquisition trolley 21 to continue moving.

[0058] S4. Comparison: Compare the magnitudes of the two sets of voltage drop measurements. The anode steel claw with the smaller voltage drop measurement value generates a smaller voltage drop during the operation of the electrolytic cell.

[0059] This embodiment has the following advantages:

[0060] After different anode steel claws operate with the same current for a period of time, the heat generated when the current passes through different anode steel claws and guide rods is more similar, and the temperature of different anode steel claws is similar. This effectively reduces the impact of temperature differences on resistance measurement. Compared with the results obtained at room temperature, the results are closer to the actual working conditions, and accurate voltage drop comparison results can be obtained, achieving the advantage of high accuracy in steel claw voltage drop measurement.

[0061] By installing different anode steel claws into the same electrolytic cell, it is possible to ensure that the different anode steel claws are under the same temperature environment, thereby reducing the impact of temperature differences on the measurement results and improving the accuracy of voltage drop comparison measurement.

[0062] By adjusting the electrode spacing to ensure that the current passing through different anode steel claws is the same, and based on the principle that voltage equals current multiplied by resistance, when the current is the same, the voltage drop difference of the anode steel claws directly reflects the resistance difference of the anode steel claws. This allows for direct comparison of the magnitude of the voltage drop to determine the magnitude of the resistance of different anode steel claws, thus achieving the function of accurately comparing the voltage drops of different anode steel claws.

[0063] The voltage measuring element 32 can be moved by the sliding carriage 21, so that the voltage measuring element 32 can sequentially measure the voltage drop of multiple anode steel claws. This facilitates the measurement of the voltage drop of multiple anode steel claws without the need for operators to manually connect the test points one by one, reducing the workload of operators and avoiding long-term operation in high-temperature environments, thus improving the safety of the measurement process.

[0064] The system enables the acquisition sliding carriage 21 to automatically trigger the measurement process when it moves to the position of the output conductive rod 47, thereby achieving positioning of the acquisition sliding carriage 21 and automatically completing the voltage drop measurement process of multiple anode steel claws, further improving the automation level of the measurement and increasing the measurement efficiency.

[0065] To prevent collisions with the data acquisition carriage 21 during anode claw replacement, this design protects the carriage and the voltage drop data acquisition device. When measurements are not required, the data acquisition carriage 21 is moved to the clearance space 15 to reduce the impact of the high temperatures generated during aluminum electrolysis on the carriage 21 and the electronic components mounted on it, thus extending their service life.

[0066] Voltage was measured at multiple power output test points 46 to obtain multiple sets of measurement data. The average value of the multiple sets of data was taken as the voltage drop value of the anode steel claw, which can reduce the measurement error and further improve the accuracy of voltage drop measurement.

[0067] Reducing the temperature difference between different anode steel claws further reduces the impact of temperature difference on resistance measurement results, making the measured voltage drop comparison results closer to the actual situation and improving the accuracy of the comparison measurement.

[0068] Based on the disclosure and teachings of the foregoing specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the invention should also fall within the protection scope of the claims of the present invention. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the invention.

Claims

1. A method of aluminum electrolytic anode steel shoe pressure drop ratio measurement, characterized by, Includes the following steps: S1. Set test points: Select at least two different anode steel claws, set an input test point (43) at the end of the anode steel claw close to the anode guide rod, and set an output test point (46) at the end of the anode steel claw far from the anode guide rod. S2. Temperature control: Install different anode steel claws into the same electrolytic cell, use a multi-functional overhead crane to drive the anode guide rod to move vertically, adjust the electrode distance of different anode steel claws so that the current passing through different anode steel claws is the same, and then run for t time; S3. Measurement: Test the voltage between the input test point (43) and the output test point (46) on different anode steel claws to obtain two sets of voltage drop measurement values; S4. Comparison: Compare the magnitudes of the two sets of voltage drop measurements. The anode steel claw with the smaller voltage drop measurement value generates a smaller voltage drop during the operation of the electrolytic cell.

2. The method of aluminum electrolytic anode steel shoe pressure drop ratio measurement according to claim 1, characterized in that, Step S1 further includes the following steps: An input conductive rod (44) is fixedly connected to the input test point (43), and an output conductive rod (47) is fixedly connected to the output test point (46). A conductive plate (45) is fixedly connected to the input conductive rod (44). Step S3 further includes the following steps: A voltage drop data acquisition device is adopted, which includes a crossbeam (11), a guide rail (12), and a data acquisition trolley (21). The guide rail (12) is fixedly installed on the crossbeam (11) and extends along the arrangement direction of the output conductive rods (47). The data acquisition trolley (21) is slidably connected to the guide rail (12). An output acquisition actuator (22) is fixedly installed on the data acquisition trolley (21). The driving end of the output acquisition actuator (22) is fixedly installed with a device for interacting with the output conductive rods (47). 47) The contacting conductive block (23), the acquisition sliding carriage (21) is fixedly equipped with an input acquisition action (24), the driving end of the input acquisition action (24) is fixedly equipped with an insulating rod (25), the insulating rod (25) is fixedly equipped with an input conductive block (26) for contacting the conductive plate (45), the acquisition sliding carriage (21) is equipped with a voltage measuring element (32), the voltage measuring element (32) is electrically connected to the input conductive block (26) and the output conductive block (23) respectively.

3. The method of aluminum electrolytic anode steel shoe pressure drop ratio measurement according to claim 1, characterized in that, Step S3 further includes the following steps: The data acquisition trolley (21) slides on the guide rail (12), which drives the output conductive block (23) to move to a position close to the output conductive rod (47), and the input conductive block (26) to move to a position close to the conductive plate (45). The output acquisition action (22) and the input acquisition action (24) are used to complete the data acquisition action. The data acquisition action includes: the power-out acquisition action (22) drives the power-out conductive block (23) to move towards the power-out conductive rod (47), so that the power-out conductive block (23) abuts against the power-out conductive rod (47); the power-in acquisition action (24) drives the power-in conductive block (26) to move towards the power-in conductive rod (44), so that the power-in conductive block (26) abuts against the power-in conductive rod (44); at this time, the voltage measuring element (32) is electrically connected to the power-in test point (43) and the power-out test point (46) respectively; the voltage measuring element (32) measures the voltage between the power-in test point (43) and the power-out test point (46); then the power-out acquisition action (22) drives the power-out conductive block (23) to move away from the power-out conductive rod (47); and the power-in acquisition action (24) drives the power-in conductive block (26) to move away from the power-in conductive rod (44).

4. The method for comparative measurement of voltage drop of aluminum electrolytic anode steel claws according to claim 3, characterized in that, The crossbeam (11) is rotatably connected to a lead screw (13), the lead screw (13) is threadedly connected to the acquisition sliding carriage (21), and the crossbeam (11) is fixedly installed with a drive component (14) whose output shaft is fixedly connected to the lead screw (13); Step S3 further includes the following steps: The driving component (14) drives the lead screw (13) to rotate, and the lead screw (13) drives the acquisition slide carriage (21) to slide on the guide rail (12) when it rotates.

5. The method for comparative measurement of voltage drop of aluminum electrolytic anode steel claws according to claim 4, characterized in that, The voltage drop data acquisition device also includes a control module (31), which is electrically connected to the power output acquisition actuator (22), the power input acquisition actuator (24), the drive (14), and the voltage measurement element (32). Step S3 further includes the following steps: The control module (31) controls the drive unit (14) to drive the lead screw (13) to rotate, so that when the output conductive block (23) moves to a position close to the output conductive rod (47), the drive unit (14) stops moving, controls the output acquisition action unit (22) to drive the output conductive block (23) to move, and the control module (31) controls the input acquisition action unit (24) to drive the input conductive block (26) to move.

6. The method for comparative measurement of voltage drop of aluminum electrolytic anode steel claws according to claim 5, characterized in that, The acquisition sliding vehicle (21) is fixedly equipped with a laser emitter (27) and a laser receiver (28). The laser emitter (27) is used to emit laser light to the laser receiver (28). The laser emitter (27) and the laser receiver (28) are located on both sides of the power output conductive rod (47). The laser receiver (28) is electrically connected to the control module (31). When the laser light is blocked by the power output conductive rod (47), the laser receiver (28) cannot receive the laser light and sends a trigger signal to the control module (31). Step S3 further includes the following steps: The laser emitter (27) and laser receiver (28) move with the acquisition trolley (21). When the power output rod (47) is located between the laser emitter (27) and laser receiver (28), the power output rod (47) blocks the laser emitted by the laser emitter (27) to the laser receiver (28). The laser receiver (28) sends a trigger signal to the control module (31), triggering the control module (31) to control the power acquisition actuator and the power input acquisition actuator (24) to complete a data acquisition action. The control module (31) controls the drive unit (14) to continue operating, driving the acquisition trolley (21) to continue moving.

7. The method for comparative measurement of voltage drop of aluminum electrolytic anode steel claws according to claim 2, characterized in that, The guide rail (12) has clearance spaces (15) at both ends; Step S2 further includes the following steps: The sampling slide car (21) is moved into the avoidance space (15) so that the sampling slide car (21) and the anode steel claw are offset in the vertical direction.

8. The method for comparative measurement of voltage drop of aluminum electrolytic anode steel claws according to claim 1, characterized in that, Step S1 further includes the following steps: The anode steel claw is equipped with multiple power output test points (46).

9. The method for comparative measurement of voltage drop of aluminum electrolytic anode steel claws according to claim 1, characterized in that, Step S2 further includes the following steps: Insulation material is laid on the anode steel claws, and the thickness of the insulation material is adjusted to make the temperature of different anode steel claws the same.

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