Anode voltage drop measuring device for aluminum electrolysis cell

Abstract

The utility model relates to an aluminum electrolysis cell anode voltage drop measuring device, which relates to the field of aluminum electrolysis cell anode measurement and comprises a handheld rod, a second probe rod fixedly connected with the handheld rod, a first probe rod rotationally connected with the handheld rod and a millivoltmeter fixedly mounted on the handheld rod. The second feeler lever penetrates into the aluminum electrolysis cell and is in contact with the bottom palm part of the anode carbon block, then the first feeler lever is manually rotated to be in contact with the anode guide rod part, the first feeler lever is further communicated with the negative electrode of the millivoltmeter through a wire, and the second feeler lever is communicated with the positive electrode of the millivoltmeter; and turning on the millivoltmeter to record deflection data of the millivoltmeter, namely voltage drop between the anode guide rod and the bottom palm of the anode carbon block. According to the utility model, the first probe rod, the second probe rod and the millivoltmeter are integrated together, when the voltage drop is detected, the first probe rod and the second probe rod can be quickly adjusted to be respectively attached to the anode part, and the millivoltmeter is arranged on the handheld rod for reading, so that the operation is convenient.

Description

Technical Field

[0001] The utility model relates to the field of aluminum electrolytic cell anode measuring tools, in particular to an aluminum electrolytic cell anode voltage drop measuring device. Background Art

[0002] The anode of an aluminum reduction cell is one of the key raw materials for aluminum electrolysis production. It acts as a conductor to conduct direct current into the electrolyte layer and, as a carbon material, participates in the anode reaction of electrolysis. During the aluminum electrolysis production process, it is often necessary to analyze and judge the cell by testing certain data points. This requires the use of testing tools to measure voltage drops in certain areas. The data obtained allows for judgment and treatment of the cell, thereby stabilizing its operating status. Alternatively, new anode energy-saving solutions can be explored to guide aluminum electrolysis production and implement energy conservation and consumption reduction efforts.

[0003] At present, the anode voltage drop measurement is generally performed online by setting a pin on the anode part. For example, the Chinese patent application with publication number CN118086980A and publication date May 28, 2024 proposes a spring-loaded pin for assembled anode voltage drop online automatic measurement equipment for aluminum electrolysis, including a main pin; the main pin is coaxially fixed through a steel inner sleeve, and a copper pin group is fixed near the front end point of the main pin; the steel inner sleeve is coaxially sleeved in the steel outer sleeve, and a high-strength spring is sleeved on the steel inner sleeve between the steel inner sleeve and the steel outer sleeve to reset the relative displacement between the steel inner sleeve and the steel outer sleeve; the copper pin group includes multiple copper spring small pins.

[0004] During use, the main ejector pin can pass through the steel inner sleeve and the steel outer sleeve without hindrance and without lateral movement when the steel inner sleeve and the steel outer sleeve move relative to each other. A high-strength spring is provided on the outside of the main cylinder of the inner sleeve. The diameter of the high-strength spring is smaller than the diameter of the front plug of the inner sleeve. The high-strength spring is used for the relative movement of the steel inner sleeve and the steel outer sleeve to realize the extension and retraction of the main ejector pin, thereby driving the copper ejector pin group to make extension and retraction adjustments.

[0005] In response to the above-mentioned related technologies, a spring-loaded ejector pin is installed on the anode guide rod to ensure that the upper aluminum guide rod of the assembled anode is stably energized, thereby meeting the operational requirements of online measurement of the assembled anode voltage drop. However, the online measurement method has a high investment cost and requires regular maintenance, and is difficult to operate. Handheld measuring tools are lower in cost and more flexible, and are suitable for rapid detection and adjustment in actual operations. At present, handheld measuring tools are generally made and used by production personnel themselves, but homemade handheld measuring tools are usually simple in structure and inconvenient to use. Utility Model Content

[0006] In order to improve the convenience of using an anode voltage drop measuring device, the utility model provides an anode voltage drop measuring device for an aluminum electrolytic cell.

[0007] The utility model provides an anode voltage drop measuring device for an aluminum electrolytic cell, which adopts the following technical solutions:

[0008] An anode voltage drop measuring device for an aluminum electrolytic cell, characterized by comprising: a handheld rod, a first probe rod, and a second probe rod;

[0009] The handheld rod is provided with a rotating connecting piece and a millivoltmeter;

[0010] The first probe comprises a connecting portion and a first measuring portion, wherein the first measuring portion is provided at one end of the connecting portion, the connecting portion is rotatably connected to the rotating connector, and the first measuring portion is connected to the positive electrical signal of the millivoltmeter;

[0011] The second probe includes a bending portion and a second measuring portion. The second measuring portion is arranged at one end of the bending portion. The other end of the bending portion is fixedly arranged on the handheld rod. The second measuring portion is connected to the negative electrical signal of the millivoltmeter.

[0012] By adopting the above technical solution, the first measuring portion at the end of the first probe is connected to the positive electrode of the millivoltmeter via a wire, and the second measuring portion at the end of the second probe is connected to the negative electrode of the millivoltmeter via a wire. When using this measuring device to measure the anode part, the first measuring portion is placed against the anode guide rod, the second probe is inserted into the electrolyte of the aluminum electrolysis cell, and the second measuring portion is placed against the bottom of the anode carbon block. The millivoltmeter is then turned on to measure the voltage drop of the anode part. In this way, since the second probe is fixedly connected to the handheld rod, after the second probe is placed against the anode carbon block by hand, the first probe can be manually adjusted so that both the first and second probes are tightly attached to the anode part, maintaining good contact between the first and second measuring portions. At the same time, since the millivoltmeter is fixedly mounted on the handheld rod, it does not affect the reading, making operation convenient.

[0013] Optionally, a clamping assembly is further provided on the first measuring part of the first probe rod, and the clamping assembly includes a claw, a first elastic member and a rotating shaft. The rotating shaft is fixedly set on the first measuring part, the claw is rotatably set on the rotating shaft, the first elastic member is set on the claw, and the first elastic member has a tendency to make the claw grasp, and the claw is electrically connected to the first measuring part.

[0014] By adopting the above technical solution, the claw is rotatably mounted on the first probe rod via a rotating shaft. The claw is automatically clamped together under the action of the first elastic member. When the first probe rod is placed on the anode guide rod, the clamping assembly is opened, and the clamping assembly automatically clamps onto the anode guide rod and electrically connects with the first measuring unit. In this way, with the cooperation of the clamping assembly, the clamping assembly clamps and secures the first measuring unit of the first probe rod to the anode guide rod, making the connection between the first probe rod and the anode guide rod more secure and reliable, reducing the probability of separation between the first probe rod and the anode guide rod, and maintaining continuous electrical continuity between the first probe rod and the anode guide rod during operation.

[0015] Optionally, the claw is further provided with a plurality of elastic ejectors, and the plurality of elastic ejectors are all provided on the end surface of the claw close to the anode guide rod, and the elastic ejectors are electrically connected to the first measuring part.

[0016] When the claw hand is clamped on the anode guide rod, the relative inner end face of the claw hand may be clamped on the edge of the anode guide rod, resulting in too small a contact area between the claw hand and the anode guide rod, poor contact or excessive contact resistance caused by the small contact area, affecting the measurement of the voltage drop at the anode guide rod. By adopting this technical solution, the elastic ejector pin will automatically shrink when subjected to pressure. When the claw hand is clamped on the anode guide rod, the two ends of the elastic ejector pin will be respectively subjected to pressure from the anode guide rod and the claw hand, causing the elastic ejector pin to shrink. Then, when the claw hand is clamped on the anode guide rod, the end faces of multiple elastic ejectors away from the claw hand will automatically fit against the outer surface of the anode guide rod under the action of elasticity. In this way, multiple elastic pins are set to measure the conduction between the claw hand and the anode guide rod. Multiple elastic pins can increase the contact points between the claw hand and the anode guide rod. On the one hand, it can reduce the probability of poor contact between the claw hand and the anode guide rod, and ensure normal communication between the anode guide rod and the claw hand; on the other hand, it can also increase the contact area between the claw hand and the anode guide rod, reduce contact resistance, reduce the influence of contact resistance on the anode voltage drop, and improve the accuracy of anode voltage drop measurement.

[0017] Optionally, a control assembly is also provided on the first probe rod, and the control assembly includes a first pull rod, a second pull rod and a pull ring. One end of the first pull rod is rotatably connected to the outer edge of the claw hand, and the other end of the first pull rod is rotatably connected to the second pull rod. The pull ring is arranged at the other end of the second pull rod, and the second pull rod is slidably arranged on the first probe rod.

[0018] By adopting the above technical solution, by pulling the pull ring connected to one end of the first pull rod, the first pull rod can be made to slide on the first probe rod, and the second pull rod rotatably connected to the other end of the first pull rod will shift its position as the first pull rod slides, and the end of the second pull rod connected to the first pull rod will rotate. At the same time, the connection between the other end of the second pull rod and the claw hand will also rotate at the same time, and drive the connection between the claw hand and the second pull rod toward the first pull rod, thereby opening the claw hand. In this way, by controlling the coordination of the various components on the assembly, the pull ring is pulled to open the claw hand, and the pull ring is released, and the claw hand is clamped under the action of the first elastic member, making the control of the clamping assembly simpler and easier to operate.

[0019] Optionally, an extension portion is further provided on the first probe rod, and the extension portion is provided between the connecting portion and the first measuring portion. A fastening bolt for fixing the extension portion is provided on one side of the extension portion.

[0020] By adopting the above technical solution, the length of the first probe rod can be extended by loosening the fastening bolt and withdrawing the extension portion, and the length of the first probe rod can be fixed by tightening the fastening bolt. The length of the first probe rod is thus adjustable, allowing the first probe rod to perform contact tests on the anode parts of aluminum electrolysis cells of different specifications, increasing the flexibility of the device and making it suitable for different usage scenarios.

[0021] Optionally, a rotating member is provided on the second measuring part of the second probe rod, and the rotating member is provided on the end face of the second measuring part close to the first probe rod. A second elastic member is connected between the rotating member and the second probe rod, and one end of the second elastic member is connected to the end face of the rotating member close to the handheld part, and the other end is connected to the end face of the second probe rod where it is connected to the rotating member. The second elastic member has a tendency to make the rotating member approach the second probe rod.

[0022] When measuring the anode, the second probe needs to penetrate deep into the electrolyte, preventing the measurement operator from observing the contact between the second probe and the anode base in real time. By adopting the above-described technical solution, the rotating member, when not under external force, is urged against the measuring portion of the second probe by the second elastic member. When the rotating member initially contacts the anode base, the edge of the rotating member first contacts the anode base. Then, the second probe is pulled upward, and the portion of the rotating member in contact with the second probe is rotated by the thrust of the second probe until the end face of the rotating member contacts the end face of the anode base. This arrangement increases the contact area between the second probe and the anode base, reducing the likelihood of poor contact between the measuring portion of the second probe and the anode base. The second elastic member reduces back-and-forth swinging of the rotating member when not under force, minimizing damage caused by collisions between the rotating member and the second probe. Furthermore, the rotating member maintains its overall upward orientation when the second probe penetrates deep into the electrolyte, ensuring contact with the bottom of the anode base.

[0023] Optionally, the second probe rod is provided with a plurality of weight-reducing holes, and the second probe rod is provided with a plurality of reinforcing ribs, the reinforcing ribs are provided at the edges of the second probe rod, and the reinforcing ribs are provided along the extension direction of the second probe rod.

[0024] By adopting the above technical solution, the weight-reducing holes can help the second probe rod to properly adjust the center of gravity position and the weight of the second probe rod, so that the second probe rod can be better balanced when held. At the same time, the temperature of the aluminum electrolyte is usually high, and the weight-reducing holes can also help the second probe rod to better dissipate heat; the strengthening ribs can increase the bending moment that the second probe rod can withstand and improve the strength of the second probe rod.

[0025] Optionally, an elastic telescopic rod is provided between the second probe rod and the hand-held rod, the fixed end of the elastic telescopic rod is connected to the hand-held rod, and the telescopic end of the elastic telescopic rod is connected to the second probe rod, and the elastic telescopic rod has a tendency to make the second probe rod approach the hand-held rod.

[0026] By adopting the above technical solution, the electrolyte temperature in the aluminum electrolytic cell is relatively high. When using a handheld device to measure the anode portion of the aluminum electrolytic cell, if the handheld portion is relatively close to the aluminum electrolytic cell, it may cause hand discomfort and even certain safety risks. In its natural state, the elastic telescopic rod is retracted. At this time, the second probe is relatively close to the handheld rod. When the anode base is deep from the edge of the aluminum electrolytic cell, the second probe is inserted into the aluminum electrolytic cell. After the measuring portion of the second probe is attached to the anode base, the handheld rod is pulled upward. The elastic telescopic rod will extend, furthering the handheld portion from the aluminum electrolytic cell, improving handhold comfort and reducing usage risks. At the same time, due to the elastic effect of the elastic telescopic rod, the measuring portion of the second probe can be clamped to the anode base, so that the measuring portion of the second probe can be more firmly attached to the anode base for measurement.

[0027] In summary, the present invention has at least one of the following beneficial technical effects:

[0028] A first probe rod and a second probe rod are provided with a rotatable connection. The first probe rod and the second probe rod can be respectively tightly attached to the anode guide rod and the anode bottom palm by manual adjustment, so that the first probe rod and the second probe rod can maintain good contact with the anode part, and the millivoltmeter is set on the handheld rod for reading, which is convenient to operate.

[0029] A clamping assembly is provided on the first probe rod, which can clamp the first measuring portion of the first probe rod to the anode guide rod, so that the first probe rod can be connected to the anode guide rod more firmly and reliably, reducing the probability of separation between the first probe rod and the anode guide rod.

[0030] Installing multiple elastic pins on the clamping assembly to connect with the anode guide rod can, on the one hand, reduce the probability of poor contact between the gripper and the anode guide rod, ensuring normal communication between the anode guide rod and the gripper; on the other hand, it can also increase the contact area between the gripper and the anode guide rod, reduce contact resistance, reduce the influence of contact resistance on the anode voltage drop, and improve the accuracy of anode voltage drop measurement.

[0031] A control component for controlling the clamping component is provided to make the control of the clamping component simpler and easier to operate.

[0032] Installing a rotating member and a second elastic member on the second probe rod can increase the contact area between the second probe rod and the anode bottom palm, reduce the occurrence of poor contact between the measuring part of the second probe rod and the anode bottom palm, and enable the rotating member to stably fit at the bottom position of the anode bottom palm. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the overall installation structure of an embodiment of the utility model;

[0034] Figure 2This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0035] Figure 3 yes Figure 2 A partial enlarged schematic diagram of part I;

[0036] Figure 4 yes Figure 2 A partial enlarged schematic diagram of part II.

[0037] Explanation of the accompanying drawings: 100, hand-held rod; 110, rotating connecting member; 120, hand-held part; 200, first probe rod; 210, connecting part; 220, first measuring part; 230, clamping assembly; 231, claw hand; 232, first elastic member; 233, rotating shaft; 234, elastic ejector pin; 240, control assembly; 241, first pull rod; 242, second pull rod; 243, pull ring; 250, extension part; 251, fastening bolt; 300, second probe rod; 310, bending part; 320, second measuring part; 330, rotating member; 340, second elastic member; 350, weight-reducing hole; 360, reinforcing rib; 370, elastic telescopic rod; 400, millivoltmeter; 500, anode guide rod; 600, anode carbon block. DETAILED DESCRIPTION

[0038] The following combination Figures 1 to 4 The utility model is described in further detail.

[0039] The prebaked anode system consists of anode carbon blocks, anode guide rods, and steel claws. Each anode carbon block group typically contains 1-2 anode carbon blocks with a width of 700-900mm, a length of 1400-1700mm, and a height of 500-600mm. During assembly, the carbon blocks and steel claws are bonded together using cast iron or carbon paste tamping. The anode guide rods are then pressed and fixed to the anode busbar using a special fixture. The anode lifting mechanism is used to adjust the position of the anode so that the anode portion is suspended in the aluminum electrolysis cell. The anode guide rod and contact resistance will cause a voltage drop in the anode portion. During normal aluminum electrolysis production, the average daily consumption of anode carbon blocks is about 2cm. The ohmic voltage drop of the carbon anode is 300-600mV, accounting for 10%-15% of the cell voltage drop. The quality of the anode material and its working condition have a significant impact on current efficiency, power consumption, and material consumption. Reducing the anode voltage drop can improve the efficiency of aluminum electrolysis and reduce costs.

[0040] The present invention discloses a device for measuring the anode voltage drop of an aluminum electrolytic cell. Figure 1 To the attached Figure 2A device for measuring the anode voltage drop of an aluminum electrolytic cell mainly includes a handheld rod 100, a second probe rod 300 fixedly connected to the handheld rod 100, a first probe rod 200 rotatably connected to the handheld rod 100, and a millivoltmeter 400 fixedly installed on the handheld rod 100. When in use, the handheld rod 100 is held by hand to allow the second probe rod 300 to penetrate into the aluminum electrolytic cell and contact the bottom palm portion of the anode carbon block 600, and then the first probe rod 200 is manually rotated to contact the first probe rod 200 with the anode guide rod 500. The first probe rod 200 is also connected to the negative pole of the millivoltmeter 400 through a wire, and the second probe rod 300 is connected to the positive pole of the millivoltmeter 400. The millivoltmeter 400 is turned on to record the deflection data of the millivoltmeter 400, which is the voltage drop between the anode guide rod 500 and the bottom palm of the anode carbon block 600.

[0041] Refer to the attached Figure 2 The hand-held rod 100 is a metal rod covered with rubber insulating material. A circular hand-held part 120 is provided at one end of the hand-held rod 100. The hand-held part 120 is a cylindrical structure fixed to the end of the hand-held rod 100, and the outer peripheral surface of the hand-held part 120 is covered with a flexible rubber material. The millivoltmeter 400 is fixed on the end of the hand-held rod 100 close to the hand-held part 120. A metal ear plate is welded on the end of the hand-held rod 100 away from the hand-held part 120, and a circular through hole is opened on the metal ear plate to form a rotating connector 110.

[0042] Refer to the attached Figure 2 The first probe rod 200 is a metal probe rod made of stainless steel. In order to prevent the first probe rod 200 from forming an electrical path with the handheld rod 100, an insulating coating is provided on the outside of the first probe rod 200. One end of the first probe rod 200 is set as a connecting part 210, and a circular hole is opened on the connecting part 210. A pin is used to connect the circular hole at the end of the first probe rod 200 to the rotating connecting member 110 to realize the rotational connection between the first probe rod 200 and the handheld rod 100.

[0043] Refer to the attached Figure 2 In order to allow the first probe rod 200 to be flexibly extended and increase the usage scenarios, an extension portion 250 is provided at the end of the first probe rod 200 away from the connecting portion 210. The extension portion 250 is a sleeve structure. The outer sleeve is fixedly welded to the first probe rod 200, and the inner sleeve is slidably arranged in the outer sleeve. A fastening bolt 251 is provided on the outer sleeve. When the fastening bolt 251 is tightened, the position of the inner sleeve and the outer sleeve can be fixed.

[0044] Refer to the attached Figure 2 To the attached Figure 3A first measuring part 220 is provided at one end of the inner sleeve extending out of the outer sleeve, and a clamping assembly 230 is fixedly provided on the measuring part. The clamping assembly 230 includes a claw hand 231, a first elastic member 232 and a rotating shaft 233. The rotating shaft 233 is fixedly provided on the first measuring part 220. The claw hand 231 includes two clamping jaws arranged on the rotating shaft 233 for relative rotation. A positioning shaft is provided on the two oppositely arranged clamping jaws. The first elastic member 232 is a tension spring. The two ends of the tension spring are respectively sleeved on the positioning shafts of the two clamping jaws. In the natural state, the two oppositely arranged clamping jaws will be clamped together under the action of the first elastic member 232.

[0045] Refer to the attached Figure 3 In order to ensure that the millivoltmeter 400 can still maintain good contact with the anode guide rod 500 when the claw hand 231 is clamped on the anode guide rod 500, a plurality of elastic ejector pins 234 are evenly arranged on the inner end surfaces of the two oppositely arranged claws of the claw hand 231. The elastic ejector pins 234 are copper sleeves with thrust springs arranged inside. The copper sleeve is connected to the millivoltmeter 400 through a wire. When the claw hand is clamped on the anode guide rod 500, the elastic ejector pins 234 will press against the outer peripheral surface of the anode guide rod 500, thereby maintaining good contact between the anode guide rod 500 and the millivoltmeter 400.

[0046] Refer to the attached Figure 2 To the attached Figure 3 , since the claw hand 231 will automatically clamp together under the action of the first elastic member 232, in order to facilitate the control of the opening of the claw hand 231 on the clamping assembly 230, a guide groove is also provided on the first probe rod 200 along the extension direction of the first probe rod 200, and the control assembly 240 includes a first pull rod 241, a second pull rod 242 and a pull ring 243. The first pull rod 241 is slidably installed in the guide groove on the first probe rod 200, and the pull ring 243 is fixedly arranged at one end of the first pull rod 241 close to the handheld part 120, and the second pull rod 242 is two metal rods rotatably connected to the other end of the first pull rod 241. The other end of the second pull rod 242 is rotatably connected to the outer walls of the two clamping claws of the claw hand 231 through a pin shaft. Pulling the pull ring 243 will drive the second pull rod 242 to move toward the end close to the handheld part 120, and then the second pull rod 242 will pull the outer wall of the clamping claw to open the clamping claw. In other embodiments, the claw hand 231 may comprise one fixed jaw and the other rotatable jaw, with the corresponding second pull rod 242 being a connecting rod rotatably connected to the rotatable jaw. Furthermore, in other embodiments, the first pull rod 241 and the second pull rod 242 may be inextensible flexible zippers, or a pulling structure capable of pulling the outer wall of the claw hand 231 to move.

[0047] Refer to the attached Figure 2The second probe rod 300 is a steel metal rod welded together in two sections. The two sections of the metal rod are connected together at a certain angle and a bent portion 310 is formed at the angle. In order to reduce the weight of the second probe rod 300 and adjust the center position of the second probe rod 300 to make it more comfortable to hold, a weight-reducing hole 350 is provided on the second probe rod 300. At the same time, in order to enable the second probe rod 300 to withstand a larger bending moment, reinforcing ribs 360 are provided on both side walls of the second probe rod 300. The reinforcing ribs 360 are provided on both side walls of the second probe rod 300 along the direction in which the second probe rod 300 extends.

[0048] Refer to the attached Figure 2 An elastic telescopic rod 370 is installed at one end of the second probe rod 300. The elastic telescopic rod 370 is a sleeve structure with a tension spring inside. The movable end of the sleeve is fixedly connected to the end of the second probe rod 300, and the fixed end of the sleeve is fixedly set on the hand-held rod 100 at a position opposite to the rotating connecting member 110, so that the second probe rod 300 can be telescopically displaced in the direction relative to the hand-held rod 100.

[0049] Refer to the attached Figure 4 The other end of the second probe rod 300 is set as a second measuring part 320, and a rotatable pin is set on the second measuring part 320. A rotating part 330 is rotatably set on the pin. The rotating part 330 is a steel metal block with a trapezoidal cross-section and a smaller side is rotatably connected to the pin, and a larger side is set toward the anode carbon block 600. A second elastic part 340 is also provided on the side wall of the rotating part 330. The second elastic part 340 is a tension spring. One end of the tension spring is fixedly set on the side of the measuring part close to the hand-held rod 100, and the other end is fixedly set on the side of the rotating part 330 close to the hand-held rod 100. Under the action of the tension spring, the rotating part 330 will stick to the second measuring part 320.

[0050] The implementation principle of the anode voltage drop measuring device of an aluminum electrolytic cell according to an embodiment of the present invention is as follows: when in use, hold the hand-held portion 120 of the hand-held rod 100, insert the second probe rod 300 deep into the aluminum electrolytic cell, and stick the rotating member 330 at the end of the second probe rod 300 to the bottom palm of the anode carbon block 600, and then pull the second probe rod 300. The rotating member 330 will stick to the bottom palm of the anode carbon block 600 under the pulling of the second probe rod 300. At the same time, when the second probe rod 300 is pulled, the elastic telescopic member connected between the second probe rod 300 and the hand-held rod 100 will extend appropriately to provide a certain tightening force. After the rotating member 330 is attached to the bottom palm of the anode, the other hand grasps the pull ring 243. When the first probe rod 200 and the pull ring 243 are connected, the pull ring 243 is controlled to rotate the first probe rod 200, and when Pull the pull ring 243 at the appropriate position to open the claw hand 231 of the clamping assembly 230, rotate the first probe rod 200 to move the claw hand 231 to the outside of the anode guide rod 500, and then release the claw hand 231 to clamp the claw hand 231 on the anode guide rod 500; if the length of the first probe rod 200 is not enough, you can first loosen the fastening bolt 251 provided on the extension part 250 connected to the first probe rod 200, adjust the length of the extension part 250 to a suitable position, and then tighten the fastening bolt 251 to adjust the first probe rod 200 to a suitable position; after the rotating part 330 and the claw hand 231 are respectively connected to the anode part, you can loosen the pull ring 243, hold the handheld rod 100 with the other hand, turn on the millivoltmeter 400 on the handheld rod 100 to read the voltage drop of the anode part.

[0051] In summary, the first probe rod 200, the second probe rod 300 and the millivoltmeter 400 are integrated together. When the voltage drop of the anode part is detected, the first probe rod 200 and the second probe rod 300 can be manually adjusted to be close to the anode guide rod 500 and the anode bottom palm respectively, and the millivoltmeter 400 is set on the handheld rod 100 for reading, which is convenient to operate; the clamping assembly 230 provided on the first probe rod 200 can clamp the first measuring part 220 of the first probe rod 200 to the anode guide rod 500, and lower the first probe rod 200 to 00 and the anode guide rod 500 are separated, so that the first probe rod 200 and the anode part are kept in good communication; the control component 240 provided on the first probe rod 200 for controlling the clamping component 230 makes the clamping component 230 simpler and easier to operate; the rotating member 330 provided on the second probe rod 300 can increase the contact area between the second probe rod 300 and the anode bottom palm, reduce the occurrence of poor contact between the measuring part of the second probe rod 300 and the anode bottom palm, and enable the rotating member 330 to be stably fitted to the bottom position of the anode bottom palm.

[0052] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for measuring anode voltage drop of an aluminum electrolytic cell, characterized in that: include: A handheld rod (100), a first probe rod (200) and a second probe rod (300); The handheld rod (100) is provided with a rotating connection member (110) and a millivoltmeter (400); The first probe (200) comprises a connecting portion (210) and a first measuring portion (220), wherein the first measuring portion (220) is provided at one end of the connecting portion (210), the connecting portion (210) is rotatably connected to the rotating connecting member (110), and the first measuring portion (220) is connected to the positive electrical signal of the millivoltmeter (400); The second probe rod (300) comprises a bending portion (310) and a second measuring portion (320), wherein the second measuring portion (320) is arranged at one end of the bending portion (310), and the other end of the bending portion (310) is fixedly arranged on the handheld rod (100), and the second measuring portion (320) is connected to the negative electrode electrical signal of the millivoltmeter (400).

2. The device for measuring anode voltage drop of an aluminum electrolysis cell according to claim 1, characterized in that: A clamping assembly (230) is further provided on the first measuring part (220) of the first probe (200), and the clamping assembly (230) includes a claw (231), a first elastic member (232) and a rotating shaft (233), wherein the rotating shaft (233) is fixedly provided on the first measuring part (220), the claw (231) is rotatably provided on the rotating shaft (233), the first elastic member (232) is provided on the claw (231), and the first elastic member (232) has a tendency to make the claw (231) grip tightly, and the claw (231) is electrically connected to the first measuring part (220).

3. The device for measuring anode voltage drop of an aluminum electrolysis cell according to claim 2, characterized in that: The claw hand (231) is further provided with a plurality of elastic ejector pins (234), and the plurality of elastic ejector pins (234) are all provided on the end surface of the claw hand (231) close to the anode guide rod, and the elastic ejector pins (234) are electrically connected to the first measuring part (220).

4. The device for measuring anode voltage drop of an aluminum electrolysis cell according to claim 3, characterized in that: A control assembly (240) is also provided on the first probe rod (200), and the control assembly (240) includes a first pull rod (241), a second pull rod (242) and a pull ring (243), one end of the first pull rod (241) is rotatably connected to the outer edge of the claw hand (231), the other end of the first pull rod (241) is rotatably connected to the second pull rod (242), the pull ring (243) is provided at the other end of the second pull rod (242), and the second pull rod (242) is slidably provided on the first probe rod (200).

5. The device for measuring anode voltage drop in an aluminum electrolysis cell according to any one of claims 1 to 4, characterized in that: An extension portion (250) is further provided on the first probe rod (200), and the extension portion (250) is provided between the connecting portion (210) and the first measuring portion (220). A fastening bolt (251) for fixing the extension portion (250) is provided on one side of the extension portion (250).

6. The device for measuring anode voltage drop in an aluminum electrolysis cell according to any one of claims 1 to 4, characterized in that: A rotating member (330) is provided on the second measuring portion (320) of the second probe rod (300), and the rotating member (330) is provided on the end surface of the second measuring portion (320) close to the first probe rod (200). A second elastic member (340) is connected between the rotating member (330) and the second probe rod (300), and one end of the second elastic member (340) is connected to the end surface of the rotating member (330) close to the hand-held rod (100), and the other end is connected to the end surface of the second probe rod (300) connected to the rotating member (330). The second elastic member (340) has a tendency to make the rotating member (330) approach the second probe rod (300).

7. The device for measuring anode voltage drop in an aluminum electrolysis cell according to any one of claims 1 to 4, characterized in that: The second probe rod (300) is provided with a plurality of weight-reducing holes (350), and the second probe rod (300) is provided with a plurality of reinforcing ribs (360). The plurality of reinforcing ribs (360) are arranged at the edge of the second probe rod (300), and the reinforcing ribs (360) are arranged along the extension direction of the second probe rod (300).

8. The device for measuring anode voltage drop in an aluminum electrolysis cell according to any one of claims 1 to 4, characterized in that: An elastic telescopic rod (370) is provided between the second probe rod (300) and the hand-held rod (100), wherein the fixed end of the elastic telescopic rod (370) is connected to the hand-held rod (100), and the telescopic end of the elastic telescopic rod (370) is connected to the second probe rod (300), and the elastic telescopic rod (370) has a tendency to move the second probe rod (300) closer to the hand-held rod (100).

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