Busbar connecting and disconnecting device for magnesium electrolytic cell

Abstract

The utility model provides a busbar connecting and disconnecting device for a magnesium electrolytic cell, which comprises a positive electrode assembly, a negative electrode assembly and an aluminum plate, and the positive electrode assembly and the negative electrode assembly are both connected with the aluminum plate; the positive electrode assembly comprises a first driving piece and a positive electrode plate; a first piston rod is connected to the first driving piece and connected with the aluminum plate. The cathode assembly comprises a second driving piece and a cathode plate, the second driving piece is connected with a second piston rod, the second piston rod is connected with the aluminum plate, the first driving piece drives the anode plate to move, the second driving piece drives the cathode plate to move, and then connection and disconnection between the anode assembly and the cathode assembly are achieved. The first piston rod and the second piston rod are operated to move in the aluminum plate through the first driving piece and the second driving piece, connection and disconnection of the positive plate and the negative plate can be achieved, and the problems that labor is time-consuming and labor-consuming, efficiency is low, potential safety hazards are large, and the capacity loss in an electrolytic bath is large are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of magnesium electrolyzers, and in particular, to a busbar connection and disconnection device for a magnesium electrolyzer. Background Art

[0002] The short circuit port is also the switch of the electrolyzer. Operating the short circuit port: when it is closed, the electrolyzer stops running; when it is opened, the electrolyzer runs. It is an important operation step during the start and stop of the electrolyzer. In addition, when the electrolyzer is abnormal, such as in the case of a hot cell, replacing electrodes, replacing heat exchangers and submersible tanks, etc., the short circuit port needs to be operated. At present, the connection and disconnection operation of the positive and negative poles of the busbar of the electrolyzer in the magnesium electrolysis industry is completed by manual use of a wrench and hammering. Each operation requires four people to cooperate, with low efficiency. Moreover, due to the relatively high connection position, there are significant safety hazards in manual operation during connection and disconnection.

[0003] With the increase in production capacity and the number of operating electrolyzers, the impact of the operation time of the single-cell short circuit port on the production capacity of the series electrolyzers is becoming more and more serious. Each operation of the short circuit port takes 20 - 30 minutes, of which the shutdown time of the entire series of electrolyzers is nearly 30 - 40 minutes, and the production capacity of the electrolyzers is affected and losses of hundreds of thousands of yuan are caused.

[0004] In addition, when manually operating the short circuit port, one needs to stand on the ladder beside the cell shell and swing a sledgehammer hundreds of times. The working environment is harsh and the labor intensity is high. Moreover, after the electrodes are separated, the busbar induced electricity releases sparks, posing a significant safety hazard. Therefore, it is of great significance to transform the short circuit port of the electrolyzer. Summary of the Utility Model

[0005] In view of this, the utility model aims to provide a busbar connection and disconnection device for a magnesium electrolyzer, so as to solve the problems in the prior art that manual operation of the electrolyzer switch is not only time-consuming, laborious, inefficient, has great safety hazards, but also causes relatively large losses in the production capacity of the electrolyzer.

[0006] To achieve the above object, the technical solution of the utility model is realized as follows:

[0007] A busbar connection and disconnection device for a magnesium electrolyzer includes a positive electrode assembly, a negative electrode assembly, and an aluminum plate. Both the positive electrode assembly and the negative electrode assembly are connected to the aluminum plate. The positive electrode assembly includes a first driving member and a positive electrode plate. A first piston rod is connected to the first driving member, and the first piston rod is connected to the aluminum plate. The negative electrode assembly includes a second driving member and a negative electrode plate. A second piston rod is connected to the second driving member, and the second piston rod is connected to the aluminum plate. By driving the positive electrode plate to move with the first driving member and driving the negative electrode plate to move with the second driving member, the connection and disconnection between the positive electrode assembly and the negative electrode assembly are realized.

[0008] This setting operates the first piston rod and the second piston rod to move within the aluminum plate through the first driving member and the second driving member, enabling the connection and disconnection of the positive electrode plate and the negative electrode plate, avoiding the problems of laborious and time-consuming work, low efficiency, large potential safety hazards, and significant production capacity loss in the electrolytic cell.

[0009] Further, the positive electrode assembly further includes a first insulating plate, and the first driving member is connected to the positive electrode plate through the first insulating plate; the negative electrode assembly further includes a second insulating plate, and the second driving member is connected to the negative electrode plate through the second insulating plate.

[0010] This setting avoids the electrical conduction between the positive electrode plate and the negative electrode plate and the corresponding driving members.

[0011] Further, through holes are provided on both the first insulating plate and the positive electrode plate, and the first piston rod sequentially passes through the through hole of the first insulating plate and the through hole of the positive electrode plate and is connected to the aluminum plate.

[0012] Further, both the first piston rod and the second piston rod are connected to the aluminum plate through a floating assembly, and the material of the floating assembly is an insulating material.

[0013] This setting ensures non-conduction between the driving member and the electrode plate.

[0014] Further, a threaded sleeve is sleeved on the through hole of the aluminum plate, and the floating assembly is threadedly connected to the threaded sleeve.

[0015] Further, a first internal thread is provided on the through hole of the aluminum plate, a first external thread is provided on the threaded sleeve, and the aluminum plate is threadedly connected to the threaded sleeve.

[0016] This setting ensures the connection stability of the threaded sleeve.

[0017] Further, one end of the floating assembly is threadedly connected to the threaded sleeve, and the other end of the floating assembly is connected to the first piston rod.

[0018] Further, the floating assembly includes a first section and a second section. The first section is provided with a second internal thread, the second section is provided with a third internal thread, the first piston rod is provided with a second external thread. The first section is threadedly connected to the threaded sleeve, and the second section is threadedly connected to the first piston rod.

[0019] Further, a first sealing portion is sleeved on the first piston rod, and the first sealing portion contacts the second section.

[0020] This setting avoids the electrical conduction between the cylinder and the positive electrode plate or the negative electrode plate.

[0021] Further, a movable block is connected to the first piston rod, a second sealing portion is sleeved on the movable block, and the second sealing portion contacts the first piston rod.

[0022] Compared with the prior art, the busbar connection and disconnection device for a magnesium electrolytic cell of the present utility model has the following advantages:

[0023] 1) By operating the first piston rod and the second piston rod to move within the aluminum plate through the first cylinder and the second cylinder, the present utility model can realize the connection and disconnection of the positive plate and the negative plate, avoiding the problems of time-consuming, laborious, low efficiency, large potential safety hazards for manual work, and large production capacity loss in the electrolytic cell.

[0024] 2) By arranging the floating assembly, on the one hand, the stability of the positive electrode assembly and the negative electrode assembly is ensured, and on the other hand, the electrical conduction between the cylinder and the aluminum plate is avoided, thereby avoiding the electrical conduction between the cylinder and the electrode.

[0025] 3) By arranging the threaded sleeve, the first sealing portion, and the second sealing portion, the present utility model effectively avoids the contact between the first piston rod and the aluminum plate and the positive plate, thereby avoiding the electrical conduction between the cylinder and the electrode, and can also press the positive plate and the negative plate more tightly, improving the reliability of the connection between the positive plate and the negative plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of the connection relationship between the busbar connection and disconnection device for a magnesium electrolytic cell of the present utility model and the electrolytic cell;

[0027] Figure 2 is a schematic structural diagram of the busbar connection and disconnection device for a magnesium electrolytic cell of the present utility model;

[0028] Figure 3 is a sectional view of the busbar connection and disconnection device for a magnesium electrolytic cell of the present utility model;

[0029] Figure 4 is Figure 3 an enlarged view of part a.

[0030] Description of the reference numerals:

[0031] 1 - positive electrode assembly, 11 - first cylinder, 12 - first insulating plate, 13 - positive plate, 14 - first piston rod, 2 - negative electrode assembly, 21 - second cylinder, 22 - second insulating plate, 23 - negative plate, 24 - second piston rod, 3 - aluminum plate, 4 - threaded sleeve, 5 - floating assembly, 51 - first section, 52 - second section, 6 - first sealing portion, 7 - second sealing portion, 8 - movable block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] To make the above - mentioned objects, features, and advantages of the present utility model more obvious and understandable, the following will describe in detail the specific embodiments of the present utility model with reference to the accompanying drawings. In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0033] As Figures 1 to 4 shown, the present utility model relates to a busbar connection and disconnection device for a magnesium electrolytic cell. The device includes a positive - electrode assembly 1, an aluminum plate 3, and a negative - electrode assembly 2. Both the positive - electrode assembly and the negative - electrode assembly are connected to the aluminum plate, and the device is connected to the electrolytic cell. As Figure 1 shown, by controlling the connection and disconnection between the positive - electrode assembly and the negative - electrode assembly, the operation of the electrolytic cell can be controlled individually.

[0034] Specifically, the positive - electrode assembly and the negative - electrode assembly have the same structure and are symmetric about the aluminum plate; and the installation positions of the positive - electrode assembly and the negative - electrode assembly are installed according to actual needs. For example, insulating slide rails are provided on both the positive - electrode assembly and the negative - electrode assembly, which can not only support the positive - electrode assembly and the negative - electrode assembly, but also make the movement of the insulating slide rails smoother to more smoothly achieve the connection and disconnection of the positive - electrode assembly and the negative - electrode assembly.

[0035] Specifically, the positive - electrode assembly 1 includes a first cylinder 11, a first insulating plate 12, a positive - electrode plate 13, and a first piston rod 14; the first cylinder 11 is connected to the positive - electrode plate 13 through the first insulating plate 12. Through - holes are provided on both the first insulating plate 12 and the positive - electrode plate 13. One end of the first piston rod 14 is connected to the first cylinder 11, and the other end of the first piston rod 14 is connected to the aluminum plate.

[0036] Preferably, the first insulating plate 12 is connected to the first cylinder 11 by bolts, and the first insulating plate is connected to the positive - electrode plate by bolts.

[0037] Specifically, the negative - electrode assembly 2 includes a second cylinder 21, a second insulating plate 22, a negative - electrode plate 23, and a second piston rod 24; the second cylinder 21 is connected to the negative - electrode plate 23 through the second insulating plate 22. Through - holes are provided on both the second insulating plate 22 and the negative - electrode plate 23. One end of the second piston rod 24 is connected to the second cylinder 21, and the other end of the second piston rod 24 is connected to the aluminum plate.

[0038] Preferably, the second insulating plate 22 is connected to the second cylinder 11 by bolts, and the second insulating plate is connected to the negative - electrode plate by bolts.

[0039] In this setting, the automatic connection and disconnection of the positive and negative plates can be achieved through the operation of the first cylinder and the second cylinder, without manual operation and the need for working at heights, reducing the labor intensity of the operators and eliminating potential safety hazards. During the on-off process of this electrolytic cell, it can ensure that the normal operation of other electrolytic cells is not affected, significantly improving production capacity and reducing energy consumption.

[0040] Specifically, an insulating sleeve can be provided in the through holes of the insulating plate and the electrode plate to ensure that there is no electrical connection between the piston rod and the electrode.

[0041] Preferably, the first cylinder / second cylinder adopts a horizontal installation method, and the first cylinder / second cylinder uses an existing clamping cylinder, which can achieve locking and stopping at any position in the middle of the stroke of the positive / negative plate, and the locking state has nothing to do with the moving direction of the piston.

[0042] Specifically, a locking device (not shown in the figure) is provided on both the first cylinder / second cylinder. This locking device is a prior art and will not be described here. The locking device can only lock after the cylinder stops and cannot brake the piston rod under dynamic conditions. If it is used in a control system with safety requirements, additional measures need to be taken. Only when the forces on both sides of the piston reach balance or the cylinder stops can the locking device be released; otherwise, the sudden movement of the piston rod may cause an accident.

[0043] Connection of the positive and negative electrodes of electrolysis: When the first piston rod / second piston rod contracts and pushes the positive plate / negative plate to a predetermined position, the positive and negative electrodes are connected, and the first cylinder / second cylinder clamps and locks in the current position to ensure that the positive and negative electrodes are in a connected state, avoiding accidental disconnection of the electrodes due to air circuit failures.

[0044] Disconnection of the positive and negative electrodes of electrolysis: When the first piston rod / second piston rod extends, the positive and negative electrodes are disconnected. After reaching the predetermined position, the first cylinder / second cylinder clamps and locks in the current position to ensure that the positive and negative electrodes of electrolysis are in a disconnected state, avoiding accidental connection of the electrodes due to air circuit failures; when the positive and negative electrodes of electrolysis are switched between the connected and disconnected states, the corresponding cylinder clamping needs to be released first, and then the cylinder telescoping operation can be performed.

[0045] Specifically, both the positive electrode assembly and the negative electrode assembly are connected to the aluminum plate through floating assemblies.

[0046] More specifically, the first cylinder / second cylinder is connected to the aluminum plate through a floating assembly. Since the connections of the first cylinder and the second cylinder to the aluminum plate are symmetric about the aluminum plate, only the connection relationship between the first cylinder and the aluminum plate will be described, and the connection relationship between the second cylinder and the aluminum plate will not be described in detail.

[0047] Specifically, a threaded sleeve 4 is connected to the through-hole of the aluminum plate 3. The threaded sleeve 4 is arranged inside the through-hole of the aluminum plate 3 and extends to the outside. The through-hole of the aluminum plate is provided with a first internal thread, and the outside of the threaded sleeve is provided with a first external thread. The aluminum plate is connected to the threaded sleeve by a thread.

[0048] Preferably, the threaded sleeve 4 is welded to the through-hole of the aluminum plate.

[0049] Preferably, the material of the threaded sleeve is an insulating material.

[0050] Specifically, the floating component is connected to the threaded sleeve. One end of the floating component is connected to the threaded sleeve by a thread, and the other end of the floating component is movably connected to the first piston rod. Preferably, the other end of the floating component is threadedly connected to the first piston rod.

[0051] Preferably, the material of the floating component is an insulating material, and the cross-section of the floating component is an L-shaped structure.

[0052] More specifically, the floating component 5 includes a first section 51 and a second section 52. The first section 51 is provided with a second internal thread, the second section 52 is provided with a third internal thread, the first piston rod 14 is provided with a second external thread. The first section is connected to the threaded sleeve by a thread and is in close contact with the aluminum plate, and the second section is connected to the first piston rod by a thread.

[0053] The purpose of setting the floating component in the present utility model is, on the one hand, to improve the stability of the movement of the first piston rod. The piston rod is driven by a cylinder and rotates on the thread of the floating component to realize the connection between the positive plate and the negative plate. On the other hand, it avoids the electrical conduction between the cylinder and the aluminum plate, and further avoids the electrical conduction between the cylinder and the positive plate. In addition, a certain floating amount is reserved in both the axial and radial directions of the piston rod, which can effectively compensate for the installation error.

[0054] Specifically, a first sealing part 6 is sleeved on the first piston rod 14. The first sealing part 6 is in close contact with the floating component and is in close contact with the second section 52.

[0055] More specifically, the outer diameter of the periphery of the first sealing part 6 is smaller than the outer diameter of the first section 51. This setting enables the floating component to enter the through-hole of the positive plate to realize the close contact between the positive plate and the aluminum plate.

[0056] Specifically, a movable block 8 is connected to the first piston rod 14. A second sealing part 7 is sleeved on the movable block 8, and the second sealing part 7 is in contact with the first piston rod 14.

[0057] Preferably, the materials of the first sealing part 6, the second sealing part 7, and the movable block are all insulating materials. The first sealing part and the second sealing part are sealing rings.

[0058] The existing electrolytic cell can only achieve the short-circuiting operation time of 30 - 40 minutes manually. By using the device of the present utility model, it can be shortened to 5 - 10 minutes; the time is compressed by 20 minutes, and the production capacity increases by nearly 80 - 90 tons per month, with the increased benefit of more than 1.1 million yuan. The operation process is changed from the cooperation of 4 people to the operation of pressing a button by 1 person, and the working intensity of employees is greatly improved.

[0059] To sum up, the device of the present utility model is simple, convenient, reliable and highly safe. During the use process, only one operator is needed to control the telescopic cylinder to complete, which greatly improves the working efficiency. At the same time, there is no need for high-altitude operation anymore, eliminating the potential safety hazard.

[0060] Although the present utility model is disclosed as above, the present utility model is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the scope defined by the claims.

Claims

1. A busbar connection disconnection device for a magnesium electrolysis cell, characterized in that, It includes a positive electrode assembly (1), a negative electrode assembly (2), and an aluminum plate (3). Both the positive electrode assembly (1) and the negative electrode assembly (2) are connected to the aluminum plate (3). The positive electrode assembly (1) includes a first driving member and a positive electrode plate (13). A first piston rod (14) is connected to the first driving member, and the first piston rod (14) is connected to the aluminum plate (3). The negative electrode assembly (2) includes a second driving member and a negative electrode plate (23). A second piston rod (24) is connected to the second driving member, and the second piston rod (24) is connected to the aluminum plate (3). By driving the positive electrode plate (13) to move with the first driving member and driving the negative electrode plate (23) to move with the second driving member, the connection and disconnection between the positive electrode assembly (1) and the negative electrode assembly (2) are realized.

2. The busbar connection disconnection device for a magnesium electrolytic cell according to claim 1, characterized in that, The positive electrode assembly (1) further includes a first insulating plate (12), and the first driving member is connected to the positive electrode plate (13) through the first insulating plate (12). The negative electrode assembly (2) further includes a second insulating plate (22), and the second driving member is connected to the negative electrode plate (23) through the second insulating plate (22).

3. The busbar connection disconnection device for a magnesium electrolysis cell according to claim 2, wherein, Through holes are provided on both the first insulating plate (12) and the positive electrode plate (13). The first piston rod (14) sequentially passes through the through hole of the first insulating plate (12) and the through hole of the positive electrode plate (13) and is connected to the aluminum plate (3).

4. The busbar connection disconnection device for a magnesium electrolysis cell according to claim 1, characterized in that, Both the first piston rod (14) and the second piston rod (24) are connected to the aluminum plate (3) through a floating assembly (5), and the floating assembly (5) is made of an insulating material.

5. A busbar connection disconnection device for a magnesium electrolytic cell according to claim 4, characterized in that, A threaded sleeve (4) is sleeved on the through hole of the aluminum plate (3), and the floating assembly (5) is threadedly connected to the threaded sleeve (4).

6. The busbar connection disconnection device for a magnesium electrolysis cell according to claim 5, characterized in that, A first internal thread is provided on the through hole of the aluminum plate (3), and a first external thread is provided on the threaded sleeve (4). The aluminum plate (3) is threadedly connected to the threaded sleeve (4).

7. The busbar connection disconnection device for a magnesium electrolysis cell according to claim 6, characterized in that, One end of the floating assembly (5) is threadedly connected to the threaded sleeve (4), and the other end of the floating assembly (5) is connected to the first piston rod (14).

8. The busbar connection disconnection device for a magnesium electrolysis cell according to claim 6, characterized in that, The floating assembly (5) includes a first section (51) and a second section (52). A second internal thread is provided on the first section (51), a third internal thread is provided on the second section (52), and a second external thread is provided on the first piston rod (14). The first section (51) is threadedly connected to the threaded sleeve (4), and the second section (52) is threadedly connected to the first piston rod (14).

9. The busbar connection disconnection device for a magnesium electrolysis cell according to claim 1, characterized in that, A first sealing portion (6) is sleeved on the first piston rod (14), and the first sealing portion (6) contacts the second section (52).

10. A busbar connection disconnection device for a magnesium electrolytic cell according to claim 1, characterized in that, A movable block (8) is connected to the first piston rod (14), and a second sealing portion (7) is sleeved on the movable block (8), and the second sealing portion (7) contacts the first piston rod (14).

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