Anode current distribution detection system for aluminum electrolysis cell

Abstract

The utility model provides an aluminum electrolysis cell anode current distribution detection system, and belongs to the technical field of current detection. The aluminum electrolysis cell anode current distribution detection system comprises a central control module, a magnetic field detection module, a switch module, a first current detection module, a second current detection module and a power supply module, the power supply module is configured to supply power to the first current detection module and the second current detection module; the central control module is connected with the magnetic field detection module and the switch module. The central control module is configured to control the on-off state of the switch module; the switch module is respectively connected with the first current detection module, the second current detection module and the power supply module; the switch module is configured to control the working state of the power supply module; the first current detection module and the second current detection module are both configured to detect anode current distribution data of the aluminum electrolysis cell. The problem that a traditional aluminum electrolysis cell anode current distribution detection technology is low in detection result accuracy can be solved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of current detection, and in particular to an anode current distribution detection system for an aluminum electrolysis cell. Background Art

[0002] The aluminum electrolysis industry is an important basic raw material industry. In the aluminum electrolysis process, the uniformity of the distribution of the anode current has a vital impact on the operating stability, energy efficiency and product quality of the electrolytic cell. Aluminum electrolysis production enterprises, scientific research fields and equipment manufacturing industries often use aluminum electrolysis cell anode current detection technology. In traditional aluminum electrolysis production, the accuracy and precision of current detection are easily affected under the extremely high temperature and complex conditions of the electrolytic cell. In addition, there is the problem of being easily interfered by external magnetic fields. When external magnetic field noise interferes, the accuracy of current detection is greatly reduced. The single detection method in the existing technology is difficult to cope with complex environmental changes, and the accuracy of current detection is not high. Therefore, the development of advanced aluminum electrolysis cell anode current distribution detection technology and the improvement of current detection accuracy have become urgent issues to be solved in the aluminum electrolysis industry. Utility Model Content

[0003] The disclosed embodiment provides an aluminum electrolysis cell anode current distribution detection system to solve the problem of low accuracy of detection results of conventional aluminum electrolysis cell anode current distribution detection technology.

[0004] The embodiment of the present disclosure provides an aluminum electrolysis cell anode current distribution detection system, comprising:

[0005] A central control module, a magnetic field detection module, a switch module, a first current detection module, a second current detection module and a power supply module; the power supply module is configured to supply power to the first current detection module and the second current detection module;

[0006] The central control module is connected to the magnetic field detection module and the switch module respectively; the central control module is configured to control the switch state of the switch module;

[0007] The switch module is connected to the first current detection module, the second current detection module and the power module respectively; the switch module is configured to control the working state of the power module; the first current detection module and the second current detection module are both configured to detect the anode current distribution data of the aluminum electrolysis cell.

[0008] In an exemplary embodiment of the present disclosure, the first current detection module includes:

[0009] Fluxgate sensor;

[0010] The fluxgate sensor is connected to the switch module and is configured to detect anode current data of the aluminum electrolysis cell.

[0011] In an exemplary embodiment of the present disclosure, the second current detection module includes:

[0012] Fiber optic current sensor;

[0013] The optical fiber current sensor is connected to the switch module and is configured to detect anode current data of the aluminum electrolysis cell.

[0014] In an exemplary embodiment of the present disclosure, a magnetic field detection module includes:

[0015] Hall sensor;

[0016] The Hall sensor is connected to the central control module and is configured to detect the magnetic field strength around the electrolyzer.

[0017] In an exemplary embodiment of the present disclosure, the first current detection module includes:

[0018] a first current detection unit, a second current detection unit, and a third current detection unit;

[0019] The first current detection unit, the second current detection unit and the third current detection unit are all connected to the switch module.

[0020] In an exemplary embodiment of the present disclosure, it further includes:

[0021] A first comparator, a second comparator, a third comparator, a first indicator light unit, a second indicator light unit and a third indicator light unit;

[0022] The output end of the first current detection unit is connected to the output end of the second current detection unit, and the output end of the second current detection unit is connected to the first input end of the first comparator, the first input end of the second comparator, and the first input end of the third comparator;

[0023] The second input terminal of the first comparator is used to connect the first reference voltage V1_in, the second input terminal of the second comparator is used to connect the second reference voltage V2_in, and the second input terminal of the third comparator is used to connect the third reference voltage V3_in;

[0024] The output end of the first comparator is connected to the first indicator light unit, the output end of the second comparator is connected to the second indicator light unit, and the output end of the third comparator is connected to the third indicator light unit.

[0025] In an exemplary embodiment of the present disclosure, a system for detecting anode current distribution of an aluminum electrolysis cell further includes:

[0026] Temperature detection module;

[0027] The temperature detection module is connected to the central control module and is configured to detect the temperature inside the aluminum electrolysis cell.

[0028] In an exemplary embodiment of the present disclosure, a system for detecting anode current distribution of an aluminum electrolysis cell further includes:

[0029] Alarm module and communication module;

[0030] Both the alarm module and the communication module are connected to the central control module.

[0031] The beneficial effect of the anode current distribution detection system of an aluminum electrolytic cell provided by the embodiment of the present disclosure is that the magnetic field detection module can monitor the magnetic field changes around the aluminum electrolytic cell in real time, and provide a decision basis for the central control module. As the core control unit, the central control module can intelligently control the switch state of the switch module based on the magnetic field detection data, and then selectively start the first current detection module or the second current detection module, so as to achieve flexible response to different environmental conditions. The first current detection module and the second current detection module respectively use fluxgate sensors and optical fiber current sensors, and combine different detection principles to improve the comprehensiveness and accuracy of detection. Through this embodiment, not only can a low-cost detection method be adopted when the magnetic field interference is small to reduce costs, but also when the magnetic field interference is large or the current is abnormal, it can quickly switch to a high-precision detection mode to ensure the accuracy and reliability of the data. By integrating the data of the two detection modules, this embodiment can more accurately determine the cause of the abnormal distribution of the anode current of the aluminum electrolytic cell, and provide strong support for the optimization of the production process. This embodiment helps to improve the efficiency and quality of aluminum electrolysis production, reduce production costs and risks, and has a positive role in promoting the development of the aluminum electrolysis industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0033] Figure 1 It is a structural schematic diagram of an anode current distribution detection system for an aluminum electrolysis cell provided by an embodiment of the present disclosure;

[0034] Figure 2 is a structural schematic diagram of a current detection module provided by an embodiment of the present disclosure;

[0035] Figure 3 It is a structural schematic diagram of another aluminum electrolysis cell anode current distribution detection system provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0036] In order to enable people in the technical field to better understand the present solution, the technical solution in the embodiment of the present solution will be clearly described below in conjunction with the drawings in the embodiment of the present solution. Obviously, the described embodiment is an embodiment of a part of the present solution, not all of the embodiments. Based on the embodiments in the present solution, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present solution.

[0037] The term "including" and any other variations in the specification and claims of this solution and the above drawings mean "including but not limited to", and is intended to cover non-exclusive inclusions and is not limited to the examples listed in the text. In addition, the terms "first" and "second" are used to distinguish different objects, not to describe a specific order.

[0038] The following is a detailed description of the implementation of the present disclosure in conjunction with the specific drawings:

[0039] Figure 1 This is a schematic diagram of the structure of an aluminum electrolysis cell anode current distribution detection system provided by an embodiment of the present disclosure. Figure 1 , the aluminum electrolysis cell anode current distribution detection system comprises:

[0040] A central control module, a magnetic field detection module, a switch module, a first current detection module, a second current detection module and a power supply module; the power supply module is configured to supply power to the first current detection module and the second current detection module;

[0041] The central control module is connected to the magnetic field detection module and the switch module respectively; the central control module is configured to control the switch state of the switch module;

[0042] The switch module is connected to the first current detection module, the second current detection module and the power module respectively; the switch module is configured to control the working state of the power module; the first current detection module and the second current detection module are both configured to detect the anode current distribution data of the aluminum electrolysis cell.

[0043] In this embodiment, the switch module may include two metal-oxide-semiconductor field-effect transistors (MOS tubes), wherein one MOS tube is connected to the first control terminal, the power module and the first current detection module of the central control module, and the other MOS tube is connected to the second control terminal, the power module and the second current detection module of the central control module. Through the two control terminal signals output by the central control module, the on and off states of the two MOS tubes can be controlled respectively, so as to realize automatic control of the working states of the first current detection module and the second current detection module through the signal. The power module can provide power support for the first current detection module and the second current detection module to ensure that they are in a working state. The magnetic field detection module can monitor the magnetic field change data around the aluminum electrolytic cell in real time, and transmit the magnetic field change data to the central control module. The central control module can receive and process these data.

[0044] Exemplarily, when the magnetic field data around the electrolytic cell is less than the preset interference magnetic field threshold, and the change amplitude and change rate of the magnetic field data are respectively less than the preset interference magnetic field change amplitude threshold and the interference magnetic field change rate threshold, the central control module can generate a corresponding command signal to control the switch module to turn on the power of the first current detection module to start working. When the magnetic field data around the electrolytic cell is greater than or equal to the preset interference magnetic field threshold, or the change amplitude and change rate of the magnetic field data are greater than or equal to the preset interference magnetic field change amplitude threshold and the interference magnetic field change rate threshold, the central control module can generate a corresponding command signal to control the switch module to turn on the power of the second current detection module to start working.

[0045] In this embodiment, the first current detection module can use the fluxgate sensor to detect the magnetic field strength to calculate the current, detect the anode current distribution data of the aluminum electrolysis cell, and feed the data back to the central control module. The second current detection module can use the optical fiber current sensor to directly detect the current, perform current detection and return data at startup. The central control module can analyze and process the data from the first current detection module and the second current detection module, and finally obtain the distribution of the anode current of the aluminum electrolysis cell.

[0046] For example, in a large aluminum electrolysis production plant, when the electrolytic cell is operating normally, the magnetic field detection module continuously monitors the surrounding magnetic field according to a preset detection frequency. The central control module controls the switch module to start the second current detection module and shut down the first current detection module according to preset rules, such as when the magnetic field change-related data exceeds a preset threshold.

[0047] For example, if the data related to the magnetic field change is less than a preset threshold, the control switch module starts the first current detection module. If the first current detection module detects that the current distribution in a certain area is abnormal, the central control module can control the switch module to start the second current detection module for detection. By combining the data of the two detection modules, the staff can accurately determine whether the abnormal current distribution is caused by physical problems of the anode, uneven electrolytes, or circuit connection failures. Therefore, timely measures such as adjusting the anode position, optimizing the electrolyte composition, or repairing the circuit can be taken to ensure the efficient and stable operation of the electrolytic cell, improve the output and quality of aluminum, and reduce energy consumption and the risk of equipment damage.

[0048] Exemplarily, the central control module can control the time when the first current detection module and the second current detection module work together according to a preset time interval. For example, the first current detection unit works alone in the first time period, the first current detection unit works alone in the second time period, and the first current detection module and the second current detection module work together in the third time period.

[0049] In this embodiment, the magnetic field detection module can monitor the magnetic field changes around the aluminum electrolytic cell in real time, and provide a decision-making basis for the central control module. As the core control unit, the central control module can intelligently control the switch state of the switch module based on the magnetic field detection data, and then selectively start the first current detection module or the second current detection module, so as to achieve flexible response to different environmental conditions. The first current detection module and the second current detection module respectively use fluxgate sensors and optical fiber current sensors, combined with different detection principles, to improve the comprehensiveness and accuracy of detection. Through this embodiment, not only can a low-cost detection method be adopted when the magnetic field interference is small to reduce costs, but also when the magnetic field interference is large or the current is abnormal, it can quickly switch to a high-precision detection mode to ensure the accuracy and reliability of the data. By integrating the data of the two detection modules, this embodiment can more accurately determine the cause of the abnormal distribution of the anode current of the aluminum electrolytic cell, and provide strong support for the optimization of the production process. This embodiment helps to improve the efficiency and quality of aluminum electrolysis production, reduce production costs and risks, and has a positive role in promoting the development of the aluminum electrolysis industry.

[0050] In one embodiment of the present disclosure, the first current detection module includes:

[0051] Fluxgate sensor;

[0052] The fluxgate sensor is connected to the switch module and is configured to detect anode current data of the aluminum electrolysis cell.

[0053] In this embodiment, the fluxgate sensor is connected to the switch module as the core component of the first current detection module. When the switch module is turned on under the control of the central control module, the fluxgate sensor starts to work. The fluxgate sensor can measure the magnetic field strength around the anode by utilizing the nonlinear relationship between the magnetic induction intensity and the magnetic field intensity of the magnetic material with high magnetic permeability and low coercivity under the saturation excitation of the alternating magnetic field. When current passes through the anode, a magnetic field is generated. The fluxgate sensor senses the changes in this magnetic field and converts it into electrical signals. After processing and analysis, these electrical signals can be used to deduce the magnetic field strength around the anode, and then the distribution of the anode current can be calculated based on relevant electromagnetic principles.

[0054] In this embodiment, the fluxgate sensor can accurately measure the magnetic field strength around the anode and infer the distribution of the anode current by analyzing the magnetic field changes, providing reliable data support for current monitoring. This improvement helps to detect current anomalies in a timely manner and ensure the stable operation of the equipment.

[0055] For example, in a certain aluminum electrolysis plant, the aluminum electrolysis cell anode current distribution detection system is used to detect the anode current distribution in the aluminum electrolysis cell. During the electrolysis process, the switch module connects the first current detection module according to the instruction of the central control module. The fluxgate sensor begins to detect the anode current distribution in the aluminum electrolysis cell. The fluxgate sensor does not need to be in direct contact with the current conductor when measuring the current, does not interfere with the flow of current, and does not cause additional load on the circuit. The fluxgate sensor can measure the changes in the magnetic field within a wide frequency range and is suitable for dynamic current monitoring. At the same time, it has a high sensitivity to the changes in the magnetic field and can detect tiny changes in the magnetic field, so that the current can be accurately measured.

[0056] For example, at a certain moment, the sensor detected that the magnetic field strength in a certain anode area was significantly higher than in other areas. After calculation and analysis, it was determined that the current in this area was too large, which might be due to the abnormally good contact between the anode and the electrolyte, or the existence of a local short circuit. Based on this test result, the staff promptly inspected and adjusted the area, optimized the electrolysis process, ensured the stable operation of the electrolytic cell, improved the production efficiency and quality of aluminum, and also reduced the safety risks and equipment damage that might be caused by abnormal current.

[0057] The current detection system of this embodiment accurately detects the distribution of anode magnetic field strength in the aluminum electrolytic cell through a fluxgate sensor, and then analyzes the distribution of anode current. In the application of aluminum electrolysis plants, this embodiment can timely detect abnormal current areas, optimize the electrolysis process, improve aluminum production efficiency and quality, and reduce safety risks and equipment damage risks, providing a strong guarantee for aluminum electrolysis production.

[0058] In one embodiment of the present disclosure, the second current detection module includes:

[0059] Fiber optic current sensor;

[0060] The optical fiber current sensor is connected to the switch module and is configured to detect anode current data of the aluminum electrolysis cell.

[0061] In this embodiment, the optical fiber current sensor is a key component of the second current detection module and is connected to the switch module. When the switch module is turned on under the control of the central control module, the optical fiber current sensor starts to work.

[0062] Exemplarily, the fiber optic current sensor detects the anode current data of the aluminum electrolytic cell based on the Faraday magneto-optical effect. When the current passes through the anode, a magnetic field is generated around the anode. Under the action of the magnetic field, the polarization plane of the polarized light transmitted inside the optical fiber in the fiber optic current sensor will rotate, and the rotation angle is proportional to the magnetic field strength, which is proportional to the current. The optical system and detection circuit in the sensor can measure the rotation angle of the polarization plane of the polarized light, and then calculate the size of the anode current of the aluminum electrolytic cell. This measurement method has the advantages of high precision, high sensitivity and anti-electromagnetic interference.

[0063] The second current detection module in the disclosed embodiment realizes high-precision detection of the anode current data of the aluminum electrolysis cell by introducing a fiber optic current sensor. The fiber optic current sensor uses optical signals for transmission and detection, is not affected by electromagnetic interference, and ensures stability and reliability in complex electromagnetic environments. The fiber optic current sensor has good long-term stability and can maintain stable measurement performance for a long time.

[0064] In one embodiment of the present disclosure, a magnetic field detection module includes:

[0065] Hall sensor;

[0066] The Hall sensor is connected to the central control module and is configured to detect the magnetic field strength around the electrolyzer.

[0067] In this embodiment, the Hall sensor can monitor the magnetic field strength around the electrolytic cell in real time according to a preset detection frequency, and the magnetic field strength can represent the interference magnetic field strength in the environment. If the difference between the interference magnetic field strength and the average value of the anode magnetic field strength in the electrolytic cell exceeds a preset threshold, or the rate of change of the interference magnetic field strength exceeds a preset threshold, it can be determined that the environmental magnetic field interference is large, and at this time, the second current detection module can be enabled for current detection, and the first current detection module can be turned off.

[0068] In this embodiment, the magnetic field detection module can monitor the magnetic field changes around the electrolytic cell in real time and accurately determine the degree of environmental magnetic field interference. When the interference exceeds the preset threshold, it can automatically switch to a more accurate current detection module, effectively ensuring the stable operation of the electrolytic cell and improving the reliability and safety of the electrolysis process.

[0069] like Figure 2 As shown, in one embodiment of the present disclosure, the first current detection module includes:

[0070] a first current detection unit, a second current detection unit, and a third current detection unit;

[0071] The first current detection unit, the second current detection unit and the third current detection unit are all connected to the switch module.

[0072] In this embodiment, three current detection units are distributed in different spatial ranges in the aluminum electrolysis cell, and simultaneously detect current data of different anodes and transmit them to the central control module.

[0073] For example, during the electrolysis process, the central control module controls the switch module to start three current detection units. The first current detection unit detects that the average current in the anode area A is X amperes, the second current detection unit detects that the average current in the anode area B is Y amperes, and the third current detection unit detects that the average current in the anode area C is Z amperes. After analyzing these data, the central control module finds that the average current in area B is the highest, and the difference with the average current data in other areas exceeds the preset threshold, and the staff immediately checks and adjusts area B.

[0074] This embodiment divides the aluminum electrolytic cell into regions and compares the average current data of multiple anodes in different regions to determine whether the current distribution is uniform. When the current distribution is uneven, a regional range can be determined as soon as possible, reducing the complexity of comparing the current of each anode one by one to determine the current distribution, ensuring the stability and efficiency of the electrolysis process. At the same time, it also avoids production accidents that may be caused by abnormal current and improves the production quality and output of aluminum.

[0075] like Figure 2 As shown, in one embodiment of the present disclosure, a system for detecting anode current distribution of an aluminum electrolysis cell further includes:

[0076] A first comparator, a second comparator, a third comparator, a first indicator light unit, a second indicator light unit and a third indicator light unit;

[0077] The output end of the first current detection unit is connected to the output end of the second current detection unit, and the output end of the second current detection unit is connected to the first input end of the first comparator, the first input end of the second comparator, and the first input end of the third comparator;

[0078] The second input terminal of the first comparator is used to connect the first reference voltage V1_in, the second input terminal of the second comparator is used to connect the second reference voltage V2_in, and the second input terminal of the third comparator is used to connect the third reference voltage V3_in;

[0079] The output end of the first comparator is connected to the first indicator light unit, the output end of the second comparator is connected to the second indicator light unit, and the output end of the third comparator is connected to the third indicator light unit.

[0080] In this embodiment, the three current detection units output an anode current signal respectively, which are aggregated together to form a total current signal. At this time, a total voltage value is formed at the convergence point. The total voltage value is input from the first input terminal of the first comparator, the second comparator and the third comparator respectively. The first comparator, the second comparator and the third comparator respectively compare the received total voltage value with the reference voltage received by each. The first reference voltage V1_in is less than the second reference voltage V2_in, and the second reference voltage V2_in is less than the third reference voltage V3_in. When the total voltage value is less than the first reference voltage V1_in, the first comparator outputs a high-level signal, which can close the switch of the power supply connected to the first indicator light up. When the total voltage value is less than the second reference voltage V2_in, the second comparator outputs a high-level signal, which can close the switch of the power supply connected to the second indicator light up, and control the second indicator light up. When the total voltage value is less than the third reference voltage V3_in, the third comparator outputs a high-level signal, which can close the switch of the power supply connected to the third indicator light up, and control the third indicator light up.

[0081] Exemplarily, the current data detected by the three current detection units are summarized to form a total current value. When the current value is smaller, more indicator lights are lit, allowing the staff to intuitively understand the current size in the electrolytic cell and take timely measures.

[0082] like Figure 3 As shown, in one embodiment of the present disclosure, a system for detecting anode current distribution of an aluminum electrolysis cell further includes:

[0083] Temperature detection module;

[0084] The temperature detection module is connected to the central control module and is configured to detect the temperature inside the electrolytic cell.

[0085] In this embodiment, the temperature detection module includes a plurality of temperature sensors (such as thermocouples or thermistors) installed at preset positions in the electrolytic cell. These sensors can sense the temperature changes in the surrounding environment and convert them into digital signals. The digital signal is sent to the central control module for analysis. When the temperature exceeds the preset temperature threshold, the central control module can generate a command signal to control the first switch to close, so that the first power supply supplies power to the first current detection module, and the first current detection module starts working. Compared with the optical fiber current sensor, the fluxgate sensor has the disadvantage of being temperature sensitive. When the temperature is too high, it is easy to affect the accuracy of the current detection data. At this time, the first current detection module is applied to work to ensure the accuracy of the data. At the same time, when the temperature exceeds the optimal temperature threshold, it will also affect the electrolysis efficiency in the electrolytic cell. By monitoring the temperature data in real time, when the temperature is abnormal, adjustment measures can be taken in time.

[0086] Exemplarily, the temperature detection module monitors the temperature in the electrolytic cell in real time according to a preset frequency. For example, the central control module receives data from the temperature detection module showing that the local temperature of the electrolytic cell is too high. Combined with other detection data, it is determined that the heat dissipation system is faulty. The staff immediately repaired the heat dissipation equipment to lower the temperature, avoiding the decrease in electrolysis efficiency and equipment damage caused by overheating. For example, too low a temperature affects the speed of the electrolysis reaction. Through feedback from the temperature detection module, the central control module controls the heating device to heat, ensuring the stability and efficiency of the electrolysis process.

[0087] like Figure 3 As shown, in one embodiment of the present disclosure, a system for detecting anode current distribution of an aluminum electrolysis cell further includes:

[0088] Alarm module and communication module;

[0089] Both the alarm module and the communication module are connected to the central control module.

[0090] In this embodiment, the alarm module and the communication module are both connected to the central control module. When the central control module receives data from each detection module (such as the magnetic field detection module, the first current detection module, and the second current detection module), and after analysis and processing, if it is found that there is an abnormality in the anode current distribution of the aluminum electrolytic cell, such as too large, too small, and seriously uneven distribution, the central control module can send instructions to the alarm module. After receiving the instruction, the alarm module can issue an alarm through sound, light, display screen, etc. to remind relevant personnel to pay attention. At the same time, the central control module can also send the detected data and analysis results to an external mobile terminal through the communication module. The communication module can communicate with the remote monitoring center or the mobile device of the relevant personnel in a wired or wireless manner, and promptly transmit the status information of the electrolytic cell to the relevant personnel so that they can take timely measures to deal with it.

[0091] For example, in a large aluminum electrolysis production workshop, due to equipment failure, the current of a certain anode suddenly increased and exceeded the normal range. After the central control module analyzed this abnormality, it immediately sent a command to the alarm module, and the alarm module's warning light flashed and the siren sounded. At the same time, the central control module sent the abnormal information to the mobile phone of the on-duty personnel and the computer of the remote monitoring center through the communication module. After receiving the alarm information, the on-duty personnel quickly rushed to the scene, and the technicians of the remote monitoring center also remotely guided the on-site personnel to investigate and deal with it based on the received data, solving the problem in time and avoiding possible production accidents and economic losses.

[0092] After the alarm module and communication module are introduced in this embodiment, the efficiency and safety of the anode current distribution management of the aluminum electrolytic cell can be improved. Once an abnormal situation is detected, the alarm module can quickly issue an alarm to avoid potential risks. The communication module ensures that real-time data can be quickly transmitted to the remote monitoring center or mobile device, so that relevant personnel can respond and process quickly, effectively ensuring the stable operation of the electrolytic cell and improving production efficiency.

[0093] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned 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 disclosure.

Claims

1. A detection system for anode current distribution of an aluminum electrolytic cell, characterized in that: include: Central control module, magnetic field detection module, switch module, first current detection module, second current detection module and power supply module; The power supply module is configured to supply power to the first current detection module and the second current detection module; The central control module is connected to the magnetic field detection module and the switch module respectively; the central control module is configured to control the switch state of the switch module; The switch module is connected to the first current detection module, the second current detection module and the power module respectively; the switch module is configured to control the working state of the power module; the first current detection module and the second current detection module are both configured to detect the anode current data of the aluminum electrolysis cell.

2. The aluminum electrolysis cell anode current distribution detection system according to claim 1, characterized in that: The first current detection module includes: Fluxgate sensor; The fluxgate sensor is connected to the switch module and is configured to detect anode current data of the aluminum electrolysis cell.

3. The aluminum electrolysis cell anode current distribution detection system according to claim 1, characterized in that: The second current detection module includes: Fiber optic current sensor; The optical fiber current sensor is connected to the switch module and is configured to detect anode current data of the aluminum electrolysis cell.

4. The aluminum electrolysis cell anode current distribution detection system according to claim 1, characterized in that: The magnetic field detection module comprises: Hall sensor; The Hall sensor is connected to the central control module and is configured to detect the magnetic field strength around the electrolytic cell.

5. The aluminum electrolysis cell anode current distribution detection system according to claim 1, characterized in that: The first current detection module includes: a first current detection unit, a second current detection unit, and a third current detection unit; The first current detection unit, the second current detection unit and the third current detection unit are all connected to the switch module.

6. The aluminum electrolysis cell anode current distribution detection system according to claim 5, characterized in that: Also includes: A first comparator, a second comparator, a third comparator, a first indicator light unit, a second indicator light unit and a third indicator light unit; The output end of the first current detection unit is connected to the output end of the second current detection unit, and the output end of the second current detection unit is connected to the first input end of the first comparator, the first input end of the second comparator, and the first input end of the third comparator; The second input terminal of the first comparator is used to connect to the first reference voltage V1_in, the second input terminal of the second comparator is used to connect to the second reference voltage V2_in, and the second input terminal of the third comparator is used to connect to the third reference voltage V3_in; The output end of the first comparator is connected to the first indicator light unit, the output end of the second comparator is connected to the second indicator light unit, and the output end of the third comparator is connected to the third indicator light unit.

7. The aluminum electrolysis cell anode current distribution detection system according to claim 1, characterized in that: Also includes: Temperature detection module; The temperature detection module is connected to the central control module and is configured to detect the temperature in the electrolytic cell.

8. The aluminum electrolysis cell anode current distribution detection system according to claim 1, characterized in that: Also includes: Alarm module and communication module; The alarm module and the communication module are both connected to the central control module.

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