Device and method for measuring equidistant voltage drop of anode of electrolytic cell

Abstract

The invention discloses an electrolytic cell anode equidistant pressure drop measuring device and method. The device comprises an air cylinder, a fixed rod device, a sliding rod, a hanger and a probe device. One end of each of two probes of the probe device is in a pointed cone shape, and the other end is provided with a voltage measuring line connected to the voltage measuring module; two insulating plates are connected between the two probes, and a first pressure spring and a second pressure spring between the two insulating plates are respectively sleeved on the first probe and the second probe. When the distances between the anode guide rods are inconsistent, the pointed cone end of the probe device is ensured to be powerfully and tightly contacted with the anode guide rods all the time through the pressure spring, so that the reliability and the accuracy of data acquisition are improved; the two insulating plates ensure the insulating effect during measurement, and the data reference contrast is improved. According to the device, the sliding rod is driven by the air cylinder, separation / closing between the probe device and the anode guide rod can be realized by horizontally moving the sliding rod, and the operation is simple and effective.

Description

Technical Field

[0001] The present invention relates to a device and method for measuring the equidistant voltage drop of an electrolytic cell anode, belonging to the technical field of aluminum electrolysis. Background Art

[0002] In recent years, with the rapid development of digital technology, the aluminum electrolysis industry has shifted from the traditional mode to digital precise and efficient management. The main equipment in the aluminum electrolysis industry is the electrolytic cell, and the carbon block anode used in the electrolytic cell is the key during the production operation of the electrolytic cell. A strong current passes through the carbon block anode and is connected to the aluminum busbar through the anode steel claw transition. The aluminum busbar of the electrolytic cell and the anode large busbar are connected by crimping to form a current path. During production, each group of anodes bears an average current, that is, the current of the entire electrolytic cell should be as evenly distributed as possible to achieve the maximum utilization rate. However, due to the different consumption degrees of the carbon blocks in each group of anodes, the current distribution of the anodes often appears uneven, which is also called current deviation. When obvious current deviation occurs, it will affect the stability of the electrolytic cell, thereby reducing the current efficiency of the electrolytic cell and increasing power consumption. In severe cases, safety accidents may also occur. Therefore, when current deviation occurs, it needs to be adjusted in a timely manner. Currently, in the industry, this adjustment work requires manual measurement of the equidistant voltage drop on each group of anode bars with a voltmeter one by one to compare and judge which group of anodes has current deviation. The industry has tried to use the clamp plus wireless transmission method and the optical fiber measurement method for measurement, but neither has been promoted. The reasons include: when using the ordinary clamp method, when the anode is upgraded or replaced, the clamp needs to be removed first, and reinstalled after the operation is completed, with complicated operations, greatly increasing the workload of on-site employees; using the optical fiber method will result in too high costs. Therefore, in the current industry, the vast majority still use the manual measurement method. Each electrolytic cell has about 40 - 50 groups of anode groups. Measuring one by one in an environment where the surrounding temperature is as high as about 80°C not only has a large work intensity, but also has extremely low efficiency, with problems of harsh working environment and low efficiency. Due to untimely measurement, energy consumption losses are caused. There have also been accidents in the industry where the system shutdown occurred due to the failure to detect high voltage drop in a timely manner and the delay in handling.

[0003] Real-time and accurate measurement and mastery of the distribution parameters of the equidistant voltage drop of the anode bars of an aluminum electrolytic cell are of great significance for timely understanding the operating state of the electrolytic cell, optimizing the production process, improving the current efficiency, reducing energy consumption, and ensuring production safety. This parameter is also key data for the construction of a digital electrolytic cell.

[0004] During the traditional manual measurement process, it is easily interfered by various objective factors, and it is impossible to achieve the unity of measurement positions, the standardization of measurement methods, etc. This directly leads to low reference value of the data results and is difficult to accurately reflect the actual production situation. Therefore, there is an urgent need for a new device for detecting the equidistant voltage drop of an electrolytic cell anode to effectively solve the above problems and achieve real-time and accurate measurement and mastery of the distribution of the equidistant voltage drop parameters of the anode bars of an aluminum electrolytic cell. Summary of the Invention

[0005] The present invention aims to provide an electrolytic cell anode equidistant voltage drop measuring device and method. The device overcomes the problem that the equidistant voltage drop parameter distribution of the anode group guide rods in an aluminum electrolytic cell cannot be automatically collected in real time, eliminates the problem of large data errors caused by manual measurement, realizes the unity of measurement positions and the standardization of measurement methods, and accurately reflects the actual production situation.

[0006] To achieve the above object, the technical solution adopted by the present invention is: an electrolytic cell anode equidistant voltage drop measuring device, including a cylinder, a fixed rod device, a sliding rod, a hanging device, and a measuring needle device; the end of the sliding rod is connected to the cylinder; the sliding rod is suspended in the groove of the hanging device; the measuring needle device includes a first insulating plate, a second insulating plate, a first measuring needle, a second measuring needle, a first pressure spring, and a second pressure spring; one end of the first measuring needle and the second measuring needle is conical, and the other end is equipped with a voltage measuring wire, and the voltage measuring wire is connected to a voltage measuring module; the first insulating plate and the second insulating plate are connected between the first measuring needle and the second measuring needle, the second insulating plate is fixedly connected to the first measuring needle and the second measuring needle, the first pressure spring is sleeved on the first measuring needle and is located between the first insulating plate and the second insulating plate, and the second pressure spring is sleeved on the second measuring needle and is located between the first insulating plate and the second insulating plate; the sliding rod is fixedly connected to the first insulating plate through the fixed rod device.

[0007] In the technical solution provided by the present invention, all measuring needle devices are equipped with a first pressure spring and a second pressure spring. When the distances between the anode guide rods are inconsistent, it ensures that the conical ends of the measuring needle devices are always in strong and tight contact with the anode guide rods, increasing the reliability and accuracy of data collection; the first insulating plate and the second insulating plate ensure the insulation effect during measurement and improve the data reference and comparability. In the solution, the cylinder drives the sliding rod, and the separation / closure between the measuring needle device and the anode guide rod can be achieved by horizontally moving the sliding rod, which is simple and effective to operate.

[0008] According to the embodiments of the present invention, the present invention can be further optimized. The following is the technical solution formed after optimization:

[0009] In one preferred embodiment, the fixed rod device includes a first fixed rod, one end of the first fixed rod is connected to the sliding rod, and the other end is fixedly connected to the first insulating plate.

[0010] In one preferred embodiment, it further includes a first plug board. The fixing rod device includes a first fixing rod, a second fixing rod, and a third fixing rod. The first plug board is arranged on the sliding rod, and the angle between each first plug board and the plane where the axis of the sliding rod is located is different. The third fixing rod is tightly connected to the tail end of the hanging. The second fixing rod connects the first insulating boards of two adjacent probe devices through the two first fixing rods. The second fixing rod is provided with a Y-shaped opening structure, and the Y-shaped opening structure is sleeved on the third fixing rod. When the first plug board rotates with the sliding rod, it can be inserted into the Y-shaped opening structure.

[0011] The cylinder drives the sliding rod, and the sliding rod rotates longitudinally to different angles. Different anode guide bar groups can be matched through the first plug board and the Y-shaped opening structure. When a certain group of anode guide bars needs to be pole-changed, the sliding rod is rotated so that the first plug board corresponding to the group of anode guide bars is accurately inserted into the corresponding Y-shaped opening structure. The sliding rod is horizontally moved to separate the probe device from the anode guide bar. After the replacement is completed, the sliding rod is horizontally moved to close the probe device and the anode guide bar again to continue parameter measurement. The above solution is simple to operate, improves work efficiency, meets the requirements of anode replacement operations, and does not require reinstalling the measuring device.

[0012] In one preferred embodiment, it further includes a second plug board. The second plug board is arranged on the sliding rod, and the angle between each second plug board and the plane where the axis of the sliding rod is located is fixed. When the second plug board rotates with the sliding rod, it can be inserted into the Y-shaped opening structure.

[0013] When the sliding rod rotates longitudinally to a fixed angle, the separation / closure between all probe devices and the anode guide bar can be achieved by horizontally moving the sliding rod. This solution meets the requirements of the busbar lifting operation, is simple to operate, improves work efficiency, and does not require reinstalling the measuring device.

[0014] In one preferred embodiment, it further includes a pointing disk, on which angle markings corresponding to the first plug board and the second plug board are marked. The pointing disk is fixed at the end of the horizontal busbar of the electrolytic cell, and the sliding rod passes through the center of the pointing disk. A pointer is provided at the end of the sliding rod, and when the pointer rotates with the sliding rod, it points to the angle markings on the pointing disk.

[0015] During use, when the sliding rod rotates longitudinally, the sliding rod drives the pointer to indicate different angle markings on the pointing disk, thereby accurately achieving the separation / closure between the probe device and the anode guide bar and completing the requirements of the busbar lifting or anode replacement operation.

[0016] In one preferred embodiment, it further includes a first sliding limit plate, a second sliding limit plate, and a third compression spring; the first sliding limit plate and the second sliding limit plate are both arranged on the second fixed rod; one end of the first sliding limit plate is connected to one end of the Y-shaped opening structure, the other end of the Y-shaped opening structure is connected to one end of the third compression spring, and the other end of the third compression spring is connected to the second sliding limit plate; the third compression spring is sleeved on the third fixed rod, and the third fixed rod penetrates through the first sliding limit plate and the second sliding limit plate.

[0017] In this solution, the sliding limit plate and the third compression spring are used to control the effective sliding length of the probe device, and further increase the close contact between the probe device and the anode busbar.

[0018] In one preferred embodiment, it further includes a solenoid valve and a pressure-resistant hose, and the cylinder is connected to the solenoid valve through the pressure-resistant hose.

[0019] Based on the same concept, the present invention also provides an electrolytic cell, including a horizontal busbar, and the hanging is installed on the back of the horizontal busbar. Hooks and bolts are usually provided on the back of the horizontal busbar for the installation of the hanging.

[0020] Based on the same concept, the present invention also provides a method for measuring the equal-distance voltage drop of the anode of an electrolytic cell. Using the above-mentioned device for measuring the equal-distance voltage drop of the anode of an electrolytic cell, it includes: attaching the pointed ends of the first probe and the second probe to different positions on the anode busbar, connecting the voltage measuring line to the voltage measuring module, and collecting the voltage drop data by the voltage measuring module.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. A probe device is provided at the position in contact with the anode busbar, which can measure the equal-distance voltage drop of the anode group busbar. Two probes of the probe device are connected by two insulating plates to ensure the insulation effect of the measurement, greatly improving the data reference and comparison, and playing an important role in data analysis. A compression spring is installed between the two insulating plates of the probe device, which can be used to adjust when the distances between the anode busbars are inconsistent to ensure that the two probes are always in close contact with the anode busbar strongly, ensuring the unity of the measurement distance and increasing the reliability and accuracy of data collection.

[0023] 2. During the anode changing operation, according to the anode changing position, accurately select the opening / closing of the probe device of a single group of anode busbars, without affecting the data measurement of the other anode busbars, and realizing the continuity of the measurement and collection of the data of the entire electrolytic cell. During the busbar lifting operation, the opening / closing of the probe devices of the entire electrolytic cell is realized simultaneously, with simple operation and strong applicability.

[0024] 3. The power supply of the solenoid valve and the air source of the cylinder can both be obtained above the electrolytic cell, eliminating the need for additional devices. During the pole-changing operation, the solenoid valve can be controlled to drive the sliding rod by simply manual operation or electric signal, achieving the opening / closing of the device with smooth mechanical movements.

[0025] 4. It only needs to be installed once and is not affected by various operations during the production and operation of the electrolytic cell, eliminating the need for frequent removal and installation. It can be fully put into use during the electrolytic production and operation. It is hung on the hook bolts of the small box fixture on the back of the horizontal busbar of the electrolytic cell. The installation and fixation of the entire device do not require secondary processing of the horizontal busbar and the overall structure of the electrolytic cell, making the installation convenient and fast.

[0026] 5. It completely eliminates the problems of high labor intensity, low work efficiency, and large data errors in traditional manual measurement. It is applicable to the field of pre-baked anode aluminum electrolytic cells with a wide range. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the electrolytic cell anode equal-spacing voltage drop measurement device according to an embodiment of the present invention;

[0028] Figure 2 is an exploded view of the electrolytic cell anode equal-spacing voltage drop measurement device according to an embodiment of the present invention;

[0029] Figure 3 is a front view of the electrolytic cell anode equal-spacing voltage drop measurement device according to another embodiment of the present invention;

[0030] Figure 4 is a rear view of the electrolytic cell anode equal-spacing voltage drop measurement device according to another embodiment of the present invention;

[0031] Figure 5 is a schematic diagram of the single-group anode guide rod probe device according to another embodiment of the present invention;

[0032] Figure 6 is a diagram of the data monitoring system according to another embodiment of the present invention;

[0033] Figure 7 is a diagram of the equal-spacing voltage drop measurement result according to another embodiment of the present invention.

[0034] Among them, 1 is a solenoid valve, 2 is a pressure-resistant hose, 3 is a cylinder, 4 is a fixed rod device, 41 is a first fixed rod, 42 is a second fixed rod, 43 is a third fixed rod, 421 is a Y-shaped port structure, 5 is a sliding rod, 52 is a first plug board, 53 is a second plug board, 54 is a pointer, 6 is a suspension, 7 is a probe device, 711 is a first pressure spring, 712 is a second pressure spring, 721 is a first probe, 722 is a second probe, 731 is a first insulating board, 732 is a second insulating board, 8 is a pointing disk, 91 is a first sliding limit board, 92 is a second sliding limit board, 10 is a third pressure spring, 13 is an anode guide rod, and 14 is an electrolytic cell horizontal bus bar. Detailed implementation mode

[0035] The present invention will be described in detail below with reference to the drawings and in combination with embodiments. It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0036] Embodiment 1

[0037] As Figure 1 shown, Embodiment 1 of the present invention provides an electrolytic cell anode equidistant voltage drop measurement device, including a solenoid valve 1 ( Figure 1 not shown in the figure), a pressure-resistant hose 2 ( Figure 1 not shown in the figure), a cylinder 3, a first fixed rod 41, a sliding rod 5, a suspension 6, and a probe device 7.

[0038] The suspension 6 is installed on the hook bolt behind the horizontal bus bar 14, and the sliding rod 5 is suspended in the groove of the fixed suspension 6. The suspension 6 is used to avoid the deformation caused by the too long length of the sliding rod 5, and its quantity can be set by itself according to the total length of the sliding rod 5. The first fixed rod 41, the sliding rod 5, the suspension 6, and the probe device 7 are all made of stainless steel.

[0039] The probe device 7 includes 2 insulating boards, 2 probes, and 2 pressure springs, as Figure 1 shown. A first insulating board 731 and a second insulating board 732 are connected between the first probe 721 and the second probe 722, and the second insulating board 732 is fixedly connected to the first probe 721 and the second probe 722, and is fastened by bolts, as Figure 1 and Figure 2As shown in the figure. Pressure springs are respectively installed on the two probe needles of the probe needle device 7. The function of the pressure spring is to make up for the distance difference between the probe needle and the guide rod due to the uneven surface of the anode guide rod, so as to always maintain a strong contact with the guide rod. The lengths of the pressure spring and the probe needle can be designed according to the groove type and the distance between the guide rods. The first fixed rod 41 and the sliding rod 5 are made of DN15 stainless steel pipes, the probe needles are made of Φ8*150mm threaded rods, the tops of the two probe needles are processed into pointed cones, and the distance between the two probe needles and the distance between every two probe needle devices can be adjusted according to the on-site installation positions of different groove types. The number of probe needle devices 7 linked by the sliding rod 5 can be increased or decreased according to requirements. For example, if the sizes of the electrolytic cells are different, the number of anode guide rods 13 will also be different. The solenoid valve 1 and the cylinder 3 are installed at appropriate spatial positions at the end of the horizontal busbar 14 of the electrolytic cell. During installation, they must be insulated from the electrolytic cell body, and a cylinder with a suitable size should be selected according to the distance between the horizontal busbar 14 and the cell edge plate of the electrolytic cell.

[0040] Such as Figure 1 As shown in the figure, one end of the first fixed rod 41 is connected to the sliding rod 5, and the other end is fixedly connected to the first insulating plate 731. In this embodiment 1, the first fixed rod 41 is welded to a connecting plate and fixedly connected to the first insulating plate 731 through the connecting plate and bolts, as Figure 2 shown in the figure. After the device is installed, two measuring pressure lines are led out from one end (non-pointed cone end) of the two probe needles of the probe needle device 7. The measuring pressure lines are connected to the voltage measuring module, and the upper computer is connected to generate real-time data.

[0041] During the traditional manual measurement process, it is easily interfered by various objective factors, and it is impossible to achieve the unity of measurement positions, the standardization of measurement methods, etc. This directly leads to a low reference value of the data results and is difficult to accurately reflect the actual production situation. After the electrolytic cell anode equidistant voltage drop measuring device provided in this embodiment 1 is installed, the position is fixed, the collected data is more accurate, and it has a stronger analysis and comparison function. At the same time, it overcomes the problem that the important data parameters such as the equidistant voltage drop distribution of the anode group of the aluminum electrolytic cell cannot be collected in real time and automatically. It can collect the equidistant voltage drop distribution data of the electrolytic cell anode guide rod in real time and automatically, achieve the unity of measurement positions and the standardization of measurement methods, and eliminate the problem of large manual measurement errors. The measuring device uses anti-magnetic materials to eliminate the direct influence of the strong magnetic environment in the aluminum electrolysis workshop and ensure the smooth movement of each component; and the device has a simple structure and is easy to install, is applicable to various series of electrolytic cells, and has a wide application prospect.

[0042] Embodiment 2

[0043] Embodiment 2 provides an electrolytic cell anode equidistant voltage drop measuring device, including a solenoid valve 1, a pressure-resistant hose 2, a cylinder 3, a first fixing rod 41, a second fixing rod 42, a third fixing rod 43, a sliding rod 5, a hanging 6, a probe device 7, a first plug board 52, a second plug board 53, a pointer 54, a pointing disk 8, a first sliding limit plate 91, a second sliding limit plate 92, and a third pressure spring 10; as Figure 3 and Figure 4 shown.

[0044] The sliding limit baffle and the third pressure spring 10 in Embodiment 2 can be selected according to the installation space and the execution of the third fixing rod 43. As Figure 3 and Figure 4 shown, the sliding limit baffle and the third pressure spring 10 are respectively welded and sleeved on the third fixing rod 43, used to control the effective sliding length of the probe device 7 and increase the close contact between the probe device 7 and the anode rod 13.

[0045] As Figure 3 and Figure 4 shown, the end of the sliding rod 5 is hinged to the piston rod of the cylinder 3, and the cylinder 3 is connected to the solenoid valve 1 through the pressure-resistant hose 2, and is installed at a suitable position at the end of the electrolytic cell. In Embodiment 2, the solenoid valve 1 adopts a two-position three-way solenoid valve, the cylinder 3 adopts a 63*75 cylinder, the solenoid valve 1 and the cylinder 3 are connected through the pressure-resistant hose 2, and the pressure resistance of the pressure-resistant hose 2 should be greater than the compressed air pressure used in the production of the electrolytic cell.

[0046] The third fixing rod 43 is welded to the tail end of the hanging 6, and the second fixing rod 42 connects the first insulating plates 731 of two adjacent probe devices 7 through two first fixing rods 41. The second fixing rod 42 is provided with a Y-shaped port structure 421, and the Y-shaped port structure 421 is sleeved on the third fixing rod 43, as Figure 4 and Figure 5As shown. A pointer 54 is vertically welded to the rear end of the sliding rod 5. A first insertion plate 52 at a different angle will be welded at the position of each group of probe devices corresponding to the sliding rod 5. The number of the first insertion plates 52 is added and welded according to the number of groups of anode guide rods to be measured, and the angles of each first insertion plate 52 must be ensured to be inconsistent. During use, the sliding rod 5 can be longitudinally rotated to a certain angle so that one of the first insertion plates 52 can accurately coincide with the position of the Y-shaped port structure 421 of each group of probe devices, and then by horizontally moving the sliding rod 5, the opening / closing between a single group of anode guide rods and the probe devices can be realized, so as to complete the requirements of a single group of anode changing operations. In addition to the first insertion plates 52 at different angles on the sliding rod 5, a second insertion plate 53 with the same number as the number of anodes to be measured needs to be welded at a fixed angle on the sliding rod 5. The function of the second insertion plate 53 is that when the sliding rod 5 is longitudinally rotated to a fixed angle, by horizontally moving the sliding rod 5, the opening / closing between all the probe devices 7 and the anode guide rods can be completed, so as to meet the requirements of the busbar lifting operation.

[0047] The pointing disk 8 is installed and fixed to the end of the horizontal busbar 14 using rivets and sleeved on the sliding rod 5, as Figure 3 and Figure 4 shown. The first insertion plate identification at different angles on the sliding rod 5 and the insertion plate identification at the fixed angle need to be marked on the pointing disk 8. During use, when the sliding rod 5 is longitudinally rotated, it will drive the pointer 54 at the rear end of the sliding rod 5 to point to the identifications at different angles on the pointing disk 8, and open and close accordingly to complete the requirements of the busbar lifting or anode replacement operation.

[0048] The hanging bracket 6 is connected and welded by a stainless steel plate with S = 8 and a stainless steel pipe with DN25. The hole pitch on the stainless steel plate is based on the hole pitch between the hook bolts of the horizontal busbar 14. After the hanging bracket 6 is hung on the hook bolts, it can be directly tightened and fixed with nuts.

[0049] As Figure 6As shown, two pressure measuring lines are led out from the probe device 7 and connected to the MV voltage measurement module. The measurement module collects data and converts it into the MODBUS TCP protocol, which is then connected to the host computer through the communication network. The host computer establishes a data configuration interface to generate real-time data display, record historical data, synchronously generate historical data curves, and set a data overrun warning function to remind technicians to handle abnormalities. The DTU data acquisition module directly uploads the data to the cloud server, enabling operators to view and receive alarm pushes in real time through the mobile phone. Therefore, Embodiment 2 also provides a real-time data acquisition system for the equidistant voltage drop distribution data of the anode group guide rods of an aluminum electrolytic cell. This system can realize the real-time and accurate measurement and acquisition of the voltage drop data indicated on multiple anode group guide rods or all the anode group guide rods of the electrolytic cell during production operation. By setting the upper and lower limits of the data alarm, the specific position of the anode current deviation in the electrolytic cell can be quickly determined using the data, that is, the anode with a voltage drop data deviating significantly from the average value is the current deviation anode. As Figure 7 shown, a voltage of 1.71 MV is abnormal and requires key attention and handling. Based on the valid data, cause analysis and timely processing are carried out, providing an important scientific and reliable data basis for the overall stable and efficient operation of the electrolytic cell, and also laying a foundation for the digital construction of the aluminum electrolytic cell.

[0050] The content clarified in the above embodiments should be understood that these embodiments are only used to illustrate the present invention more clearly and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modification of these embodiments by those skilled in the art all fall within the scope defined by the appended claims of the present invention.

Claims

1. A device for measuring the equidistant voltage drop of an electrolytic cell anode, characterized in that: It comprises a cylinder (3), a fixed rod device (4), a sliding rod (5), a hanger (6), and a measuring needle device (7); the end of the sliding rod (5) is connected to the cylinder (3); the sliding rod (5) is suspended in a groove of the hanger (6); The measuring needle device (7) comprises a first insulating plate (731), a second insulating plate (732), a first measuring needle (721), a second measuring needle (722), a first pressure spring (711), and a second pressure spring (712); one end of the first measuring needle (721) and the second measuring needle (722) are in a pointed cone shape, and a pressure measuring line is installed at the other end, and the pressure measuring line is connected to a voltage measuring module; the first insulating plate (731) and the second insulating plate (732) are connected between the first measuring needle (721) and the second measuring needle (722), and the second insulating plate (732) is connected between the first measuring needle (721) and the second measuring needle (722). The edge plate (732) is tightly connected to the first measuring pin (721) and the second measuring pin (722); the first pressure spring (711) is mounted on the first measuring pin (721) and is located between the first insulating plate (731) and the second insulating plate (732); the second pressure spring (712) is mounted on the second measuring pin (722) and is located between the first insulating plate (731) and the second insulating plate (732); the sliding rod (5) is tightly connected to the first insulating plate (731) via the fixing rod device (4).

2. The device for measuring the equidistant voltage drop of an electrolytic cell anode according to claim 1, characterized in that: The fixing rod device (4) comprises a first fixing rod (41), one end of the first fixing rod (41) is connected to the sliding rod (5), and the other end of the first fixing rod (41) is tightly connected to the first insulating plate (731).

3. The device for measuring the equidistant voltage drop of an electrolytic cell anode according to claim 1, characterized in that: It also includes a first plug plate (52), and the fixing rod device (4) includes a first fixing rod (41), a second fixing rod (42), and a third fixing rod (43); The first plugging plates (52) are arranged on the sliding rod (5), and the angles between each of the first plugging plates (52) and the plane where the axis of the sliding rod (5) is located are different; The third fixing rod (43) is firmly connected to the tail end of the hanger (6). The second fixing rod (42) is connected to the first insulating plates (731) of two adjacent measuring needle devices (7) via two of the first fixing rods (41); a Y-shaped opening structure (421) is provided on the second fixing rod (42); the Y-shaped opening structure (421) is mounted on the third fixing rod (43); and the first plug plate (52) can be inserted into the Y-shaped opening structure (421) when the sliding rod (5) rotates.

4. The device for measuring the equidistant voltage drop of an electrolytic cell anode according to claim 3, characterized in that: It also includes a second plug plate (53), which is arranged on the sliding rod (5), and the angle between each second plug plate (53) and the plane where the axis of the sliding rod (5) is located is fixed; The second plug plate (53) can be inserted into the Y-shaped opening structure (421) when rotating with the sliding rod (5).

5. The device for measuring the equidistant voltage drop of an electrolytic cell anode according to claim 5, characterized in that: It also includes a pointing plate (8) on which angle marks corresponding to the first plug plate (52) and the second plug plate (53) are marked, the pointing plate (8) is fixed to the end of the horizontal busbar (14) of the electrolytic cell, and the sliding rod (5) passes through the center of the pointing plate (8); A pointer (54) is provided at the end of the sliding rod (5), and the pointer (54) points to the angle mark of the pointing disk (8) when the sliding rod (5) rotates.

6. The device for measuring the equidistant voltage drop of an electrolytic cell anode according to claims 3 to 5, characterized in that: It also includes a first sliding limit plate (91), a second sliding limit plate (92), and a third pressure spring (10); The first sliding limit plate (91) and the second sliding limit plate (92) are both arranged on the second fixed rod (42); the first sliding limit plate (91) is connected to one end of the Y-shaped mouth structure (421), the other end of the Y-shaped mouth structure (421) is connected to one end of the third pressure spring (10), and the other end of the third pressure spring (10) is connected to the second sliding limit plate (92); the third pressure spring (10) is mounted on the third fixed rod (43), and the third fixed rod (43) passes through the first sliding limit plate (91) and the second sliding limit plate (92).

7. The device for measuring the equidistant voltage drop of an electrolytic cell anode according to claim 1, characterized in that: It also comprises a solenoid valve (1) and a pressure-resistant hose (2), and the cylinder (3) is connected to the solenoid valve (1) via the pressure-resistant hose (2).

8. An electrolytic cell comprising a horizontal busbar (14), characterized in that: The suspension (6) is installed on the back side of the horizontal busbar (14).

9. A method for measuring the equidistant voltage drop of an electrolytic cell anode, using the device for measuring the equidistant voltage drop of an electrolytic cell anode according to any one of claims 1 to 7, characterized in that: include: The pointed cone ends of the first measuring needle (721) and the second measuring needle (722) are attached to different positions on the anode guide rod (13), and the pressure measuring line is connected to a voltage measuring module, and the voltage measuring module collects voltage drop data.

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