Electrolytic cell furnace bottom cooling air pipe

Abstract

The application provides an electrolytic cell furnace bottom cooling air pipe, which comprises a connecting pipe, a gas outlet pipe is arranged on the connecting pipe at intervals, and the gas outlet end of the gas outlet pipe is directed to the electrolytic cell furnace bottom; a flange plate is arranged on both ends of the connecting pipe, and two connecting pipes are connected through the flange plate; a gas supply assembly is connected to the first end of the connected connecting pipe; and a plug is arranged on the second end of the connected connecting pipe. The application has the beneficial effect that the connecting pipe is connected to the existing air compression equipment in cooperation with the air inlet pipe. Compressed air is sprayed out of the air nozzle at the upper end of the connecting pipe and directly reaches the bottom of the electrolytic cell, thereby effectively cooling the electrolytic cell. The bottom of the connecting pipe is provided with a movable frame, which facilitates flexible movement. Through the arrangement of the flange plate, the splicing use of multiple connecting pipes can be realized, thereby meeting the requirements of different scenes.

Description

Technical Field

[0001] This application belongs to the field of metal processing technology, specifically relating to a cooling duct at the bottom of an electrolytic cell furnace. Background Technology

[0002] Large aluminum electrolytic cells, especially at high current densities, exhibit extremely high heat flux density at the bottom. This heat not only severely endangers workers around the cell but also significantly increases the temperature of the conductive busbars between cells, increasing their resistance and exacerbating deformation, particularly during the initial startup phase. In recent years, with the increase in current intensity, especially the anode current density, the requirements for heat dissipation capacity of the cell sidewalls have become increasingly stringent. One measure to enhance bottom heat dissipation is welding steel heat sinks (thin steel plates) to the bottom surface to increase the heat dissipation area. However, welding heat sinks to the bottom affects the strength of the cell shell and increases its deformation. Therefore, the number of heat sinks cannot be excessive. Even with heat sinks, heat cannot be effectively dissipated during the initial startup phase, resulting in poor practical performance. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0004] To address the aforementioned problems, this application provides a cooling duct for the bottom of an electrolytic cell furnace, comprising:

[0005] A connecting pipe is provided with gas outlet pipes at intervals on the connecting pipe, and the gas outlet end of the gas outlet pipe faces the bottom of the electrolytic cell furnace;

[0006] A flange is provided on both ends of the connecting pipe, and the connecting pipes are connected to each other through the flange;

[0007] An air supply assembly is connected to the first end of the connected pipe after connection;

[0008] A plug is disposed on the second end of the connected pipe after connection.

[0009] Optionally, the gas outlet pipe is equipped with a gas nozzle, which is located below the bottom of the electrolytic cell furnace.

[0010] Optionally, a regulating valve is provided on the air outlet pipe.

[0011] Optionally, a plug is provided on the second end of the connecting tube, and a plug groove matching the plug is provided on the first end of the connecting tube.

[0012] Optionally, the air supply assembly includes:

[0013] Gas source;

[0014] An air intake pipe, the first end of which is connected to the air source;

[0015] A connector is provided on the insertion slot, and the second end of the air intake pipe is connected to the connector.

[0016] Optionally, it also includes a movable frame, which includes a frame body and casters, with the connecting pipe disposed on the frame body and the casters disposed at the bottom of the movable frame.

[0017] Optionally, a height adjustment component is provided between the frame and the connecting pipe.

[0018] Optionally, the height adjustment component includes:

[0019] A sleeve, wherein the sleeve is disposed on the frame;

[0020] A plug-in rod is disposed on the side of the connecting pipe away from the air outlet pipe, and the plug-in rod is slidably disposed inside the sleeve;

[0021] A limiting member is provided on the sleeve to fix the plug rod.

[0022] Optionally, the plug rod is provided with a plurality of limiting holes spaced apart.

[0023] Optionally, the limiting member is a threaded pin, which can be inserted into the limiting hole.

[0024] Beneficial effects

[0025] This invention provides a cooling duct for the bottom of an electrolytic cell, which connects to an existing air compression device via a connecting pipe and an air inlet pipe. Compressed air is ejected from the nozzle at the top of the connecting pipe, reaching the bottom of the electrolytic cell and effectively cooling it. A movable frame is provided at the bottom of the connecting pipe for easy movement. Multiple connecting pipes can be combined using flanges to meet different needs. Furthermore, the height of the connecting pipe is adjustable to fit the bottom of electrolytic cells at different heights, greatly enhancing its convenience and versatility. Attached Figure Description

[0026] Figure 1 This is the main view of the present invention.

[0027] Figure 2 This is a structural diagram of the height adjustment component of this utility model;

[0028] Figure 3 This is a structural diagram of the first end of the connecting pipe of this utility model.

[0029] The reference numerals in the attached figures are as follows:

[0030] 1. Connecting pipe; 2. Air outlet pipe; 3. Flange; 4. Air supply assembly; 5. Plug; 6. Air nozzle; 7. Regulating valve; 8. Connector; 9. Air inlet pipe; 10. Connector; 11. Moving frame; 12. Frame body; 13. Casters; 14. Height adjustment assembly; 15. Sleeve; 16. Connector rod; 17. Limiting element; 18. Limiting hole. Detailed Implementation

[0031] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0035] See also Figure 1-3 As shown, an embodiment of this application provides a cooling duct for the bottom of an electrolytic cell, comprising:

[0036] Connecting pipe 1, with gas outlet pipes 2 spaced apart on the connecting pipe 1, the gas outlet end of the gas outlet pipe 2 facing the bottom of the electrolytic cell furnace;

[0037] Flange 3 is disposed on both ends of the connecting pipe 1, and the connecting pipes 1 are connected to each other through the flange 3;

[0038] Air supply assembly 4, which is connected to the first end of the connected pipe 1 after connection;

[0039] Plug 5 is disposed on the second end of the connected pipe 1 after connection.

[0040] Specifically, the connecting pipe 1 has spaced-out outlet pipes 2, which face the bottom of the electrolytic cell furnace. When compressed air enters the connecting pipe 1 through the air supply assembly 4, it is sprayed out through each outlet pipe 2 towards the bottom of the electrolytic cell furnace, ensuring sufficient airflow to the furnace bottom and effectively carrying away the heat generated at the furnace bottom, achieving a comprehensive and efficient cooling effect. In large electrolytic cell furnaces, the number of outlet pipes 2 will increase accordingly, and the spacing will be appropriately reduced to ensure uniform heat dissipation over a large area of ​​the furnace bottom; while in small or specially shaped electrolytic cell furnaces, the layout of the outlet pipes 2 will be flexibly adjusted according to the actual situation to ensure maximum cooling effect.

[0041] Flanges 3 are located at both ends of the connecting pipe 1, allowing for easy splicing of two connecting pipes 1 together. In practical applications, when dealing with electrolytic cell groups of different sizes or requiring cooling of a large electrolytic area, operators can quickly splice multiple sets of connecting pipes 1. High-strength bolts are used between the flanges 3 to ensure a tight and secure connection, preventing air leakage under high pressure. This splicable design not only meets the cooling range requirements in different scenarios but also facilitates transportation and storage. During transportation, the connecting pipe 1 can be disassembled into individual sections, reducing space occupation; when needed, it can be quickly reassembled using the flanges 3, greatly improving work efficiency.

[0042] The air supply assembly 4 is connected to the first end of the connecting pipe 1 to provide a power source. The plug 5 is located at the second end of the connected pipe 1, effectively sealing the end of the pipe and preventing compressed air leakage. This ensures that all compressed air is sprayed through the outlet pipe 2 towards the bottom of the electrolytic cell, improving the utilization efficiency of compressed air. The plug 5 is typically made of a material with good sealing performance and a certain compressive strength, such as rubber or high-strength plastic. During installation, threaded or snap-fit ​​connections are used to ensure a tight fit with the connecting pipe 1, preventing loosening or detachment during long-term use. Furthermore, the plug 5 can be easily removed for cleaning or maintenance of the inside of the connecting pipe 1, facilitating related operations.

[0043] The gas outlet pipe 2 is equipped with a gas nozzle 6, which is located below the bottom of the electrolytic cell furnace.

[0044] Specifically, the air nozzle 6 is installed on the air outlet pipe 2 and located below the bottom of the electrolytic cell furnace, so that the compressed air can directly act on the heating parts of the furnace bottom after being sprayed out, and can quickly remove the heat from the furnace bottom. Moreover, the air nozzle 6 maintains an appropriate distance from the furnace bottom, which can ensure that the airflow has sufficient impact force on the furnace bottom to dissipate heat, but will not cause mechanical damage to the furnace bottom due to being too close.

[0045] Among them, the air nozzle 6 has a square structure, which provides a more uniform and concentrated airflow distribution compared to the traditional round air nozzle 6. When compressed air arrives at the square air nozzle 6 from the connecting pipe 1 through the outlet pipe 2, the square structure of the air nozzle 6 causes the airflow to form a flat airflow jet when ejected. This airflow pattern can more comprehensively cover the area below the bottom of the electrolytic cell furnace. At the bottom of the electrolytic cell furnace, the heat generation may vary in different parts. The square air nozzle 6 can precisely guide the airflow to the areas requiring focused cooling based on the shape of the furnace bottom and the heat distribution characteristics. For example, at the edge of the electrolytic cell furnace bottom or near the electrodes, where the current density is higher and more heat is generated, the square air nozzle 6 can adjust its installation angle and position to make the airflow more concentrated on these high-temperature areas, effectively improving heat dissipation efficiency.

[0046] A regulating valve 7 is installed on the air outlet pipe 2.

[0047] Specifically, regulating valve 7 is used to control the flow rate of compressed air in the outlet pipe 2. Operators can operate regulating valve 7 manually or automatically based on furnace bottom temperature monitoring data and actual cooling requirements. When the furnace bottom temperature is low, the opening of regulating valve 7 is reduced to decrease the flow rate of compressed air through the outlet pipe 2, avoiding excessive cooling that could lead to energy waste and potential adverse effects on the electrolysis process. Conversely, when the furnace bottom temperature is too high, the opening of regulating valve 7 is increased, allowing more compressed air to quickly pass through the outlet pipe 2 and be sprayed onto the bottom of the electrolytic cell via the square nozzle 6, enhancing heat dissipation and rapidly reducing the furnace bottom temperature.

[0048] The regulating valve 7 is located at the end of the outlet pipe 2 near the connecting pipe 1. This allows the regulating valve 7 to control the flow rate of compressed air as soon as it enters the outlet pipe 2, ensuring that the airflow from the entire outlet pipe 2 and each square nozzle 6 remains stable and meets the required flow rate. Furthermore, the regulating valve 7 has a highly flexible adjustment range, adapting to the cooling needs of electrolytic cells of different sizes and types. Whether it's a small experimental electrolysis device or a large industrial electrolytic cell, the regulating valve 7 can adjust the compressed air flow rate to the most suitable level according to the actual situation.

[0049] The second end of the connecting pipe 1 is provided with a plug 8, and the first end of the connecting pipe 1 is provided with a plug groove that matches the plug 8.

[0050] Specifically, the plug 8 at the second end of the connecting tube 1 is shaped and sized to match the plug groove at the first end of the connecting tube 1. The plug 8 is typically made of a high-strength material with a certain degree of toughness, such as high-quality metal or high-performance engineering plastic. This material selection ensures that the plug 8 is not easily damaged during frequent insertion and removal, while also providing sufficient strength and stability during connection.

[0051] The internal structure of the insertion groove at the first end of the connecting pipe 1 matches the insertion nozzle 8, enabling a tight fit when the two are connected. During assembly, when the operator aligns the insertion nozzle 8 with the insertion groove and inserts it, the insertion nozzle 8 gradually embeds itself into the insertion groove until it reaches the predetermined depth. At this time, the sealing gasket between the insertion nozzle 8 and the insertion groove ensures a tight connection and effectively prevents compressed air leakage at the connection point.

[0052] The air supply component 4 includes:

[0053] Gas source;

[0054] Air intake pipe 9, the first end of which is connected to the air source;

[0055] Connector 10 is disposed on the insertion slot, and the second end of the air intake pipe 9 is connected to the connector 10.

[0056] Specifically, the air source, serving as the energy source for the air supply component 4, is typically an air compressor. These devices compress atmospheric air to provide sufficient pressure to meet the airflow power required for cooling the bottom of the electrolytic cell. Electrolysis production workshops of different sizes will be equipped with air source equipment of appropriate specifications according to actual needs. For example, large industrial electrolysis workshops, which require cooling a large number of electrolytic cells, will use high-power, large-capacity air compressors to ensure a continuous and stable supply of compressed air with sufficient pressure and flow; while small experimental electrolysis devices may use small portable air source equipment, which, although smaller in scale, can still provide the necessary cooling airflow for the bottom of the electrolytic cell during the experiment.

[0057] The air intake pipe 9 connects the air source to the connecting pipe 1. The air intake pipe 9 is generally made of materials with good pressure resistance, such as high-strength metal pipes or specially designed pressure-resistant rubber pipes. These materials can withstand the high pressure output from the air source, preventing pipe rupture or leakage during transport. The connector 10 is located on the insertion groove at the first end of the connecting pipe 1. Its connection to the insertion groove is typically achieved through threaded or snap-fit ​​connections. These connection methods are convenient to install and provide a secure connection, ensuring that there will be no loosening or leakage between the insertion groove and the connector 10 under the high pressure impact of compressed air.

[0058] The connector 10 has an internal thread in the slot and an external thread on the connector 10. The connector 10 and the slot are connected by a thread, which facilitates installation and disassembly.

[0059] It also includes a movable frame 11, which includes a frame body 12 and casters 13. The connecting pipe 1 is disposed on the frame body 12, and the casters 13 are disposed at the bottom of the movable frame 11.

[0060] Specifically, the mobile frame 11 includes a frame body 12 and casters 13. The frame body 12, as the main support structure of the mobile frame 11, is made of sturdy and durable materials, such as high-strength steel or high-quality aluminum alloy. The connecting pipe 1 is securely installed on the frame body 12 through welding, bolting, or special fixing clamps. This stable connection ensures that the connecting pipe 1 will not shake or shift during movement, guaranteeing the normal delivery of compressed air within the pipe and a stable cooling effect on the bottom of the electrolytic cell furnace. At the same time, the frame structure of the frame body 12 also has a certain strength and rigidity, capable of withstanding forces from the connecting pipe 1 and possible external collisions, preventing deformation or damage during use.

[0061] The casters 13 are mounted on the bottom of the mobile frame 11, providing the mobile frame 11 with mobility. In the complex environment of the electrolysis workshop, operators can easily push the mobile frame 11 to quickly move the connecting pipe 1 to the electrolytic cell that needs to be cooled.

[0062] A height adjustment component 14 is provided between the frame 12 and the connecting pipe 1.

[0063] Specifically, the height adjustment component 14 is installed between the connecting pipe 1 and the frame 12, enabling adjustment of the height of the connecting pipe 1. Different specifications of electrolytic cells have different furnace bottom heights; even for the same electrolytic cell, the actual effective cooling height of the furnace bottom will change at different production stages due to factors such as electrode wear and material addition. The height adjustment component 14 allows operators to flexibly adjust the height of the connecting pipe 1 according to the actual situation. For example, for large industrial electrolytic cells, because their furnace bottom is relatively high, operators can use the height adjustment component 14 to raise the connecting pipe 1 to a suitable height, ensuring that the square gas nozzle 6 is in the optimal cooling position below the furnace bottom; while for small experimental electrolytic cells, the height can be lowered, allowing the airflow to act more precisely and efficiently on the furnace bottom.

[0064] The height adjustment component 14 includes:

[0065] Sleeve 15, wherein sleeve 15 is disposed on the frame 12;

[0066] A plug rod 16 is disposed on the side of the connecting pipe 1 away from the air outlet pipe 2, and the plug rod 16 is slidably disposed inside the sleeve 15;

[0067] The limiting member 17 is disposed on the sleeve 15 and is used to fix the plug rod 16.

[0068] Specifically, the height adjustment assembly 14 includes a sleeve 15, a connector rod 16, and a limiting member 17. The sleeve 15 is securely mounted on the frame 12. The inner wall of the sleeve 15 is precision-machined with a smooth surface, providing good guidance and a low-friction environment for the sliding of the connector rod 16. Its inner diameter precisely matches the outer diameter of the connector rod 16, ensuring smooth sliding of the connector rod 16 within the sleeve 15 while preventing the connecting pipe 1 from shaking or shifting during use due to excessive gaps, thus ensuring that the cooling airflow accurately acts on the bottom of the electrolytic cell furnace.

[0069] The insertion rod 16 is located on the side of the connecting pipe 1 away from the outlet pipe 2. It is tightly connected to the connecting pipe 1 by welding or bolting to form a whole. The insertion rod 16 can slide freely within the sleeve 15, allowing the height of the connecting pipe 1 to be adjusted according to actual needs. When it is necessary to raise the connecting pipe 1, the operator only needs to pull the connecting pipe 1 upward, and the insertion rod 16 will slide upward within the sleeve 15; conversely, when it is necessary to lower the height of the connecting pipe 1, the connecting pipe 1 is pushed downward. A limiting member 17 is provided on the sleeve 15 to fix the insertion rod 16, ensuring that the connecting pipe 1 can be stably maintained after being adjusted to a suitable height. The connection form of the limiting member 17 can be bolt and nut type, pin type, or snap-fit ​​type. Taking the bolt-nut type limiting component 17 as an example, after the connecting pipe 1 is adjusted to the required height, the operator tightens the limiting component 17 on the sleeve 15. The end of the limiting component 17 will tightly abut against the surface of the plug rod 16, fixing the plug rod 16 inside the sleeve 15 through friction, preventing it from sliding during use. The pin type limiting component 17 fixes the plug rod 16 by inserting a pin into the corresponding hole on the sleeve 15 and the plug rod 16.

[0070] The plug rod 16 is provided with a plurality of limiting holes 18 spaced apart.

[0071] The limiting member 17 is a threaded pin, which can be inserted into the limiting hole 18.

[0072] Specifically, the spacing of the limiting holes 18 on the insertion rod 16 is uniform and appropriate, ensuring both the accuracy of the height adjustment of the connecting pipe 1 and meeting the needs of different height adjustment ranges. Taking the common range of changes in the furnace bottom height of an electrolytic cell as an example, the appropriate spacing of the limiting holes 18 allows the connecting pipe 1 to be adjusted with small height increments, thereby accurately adapting to various specifications of electrolytic cells and the furnace bottom height under different operating conditions. For example, for some special electrolytic processes with extremely high temperature control requirements, the distance between the square gas nozzle 6 and the furnace bottom needs to be precisely controlled within a very small range. In this case, the evenly spaced limiting holes 18 allow the operator to adjust the connecting pipe 1 to the most suitable height according to actual needs, ensuring that the cooling airflow can act on the furnace bottom at the best angle and force, achieving efficient cooling.

[0073] The threaded pin, acting as a limiting component 17, has a threaded structure that allows it to tightly engage with the inner wall of the limiting hole 18 after insertion, forming a secure connection. Once the connecting pipe 1 is adjusted to the desired height, the operator simply screws the threaded pin into the corresponding limiting hole 18. The friction and self-locking properties of the thread prevent the pin from easily loosening or dislodging, thus stably fixing the insertion rod 16 within the sleeve 15. This fixing method effectively resists various external forces acting on the connecting pipe 1 during use, such as airflow impact and equipment vibration, ensuring that the connecting pipe 1 remains at the set height and guarantees stable cooling operation.

[0074] The engagement between the threaded pin and the limiting hole 18 offers excellent repeatability and interchangeability. If the height of the connecting pipe 1 needs to be readjusted, the operator simply needs to unscrew the threaded pin, slide the insertion rod 16 within the sleeve 15 to the new height position, and then screw the threaded pin into the corresponding limiting hole 18. Furthermore, since the limiting holes 18 are evenly spaced, a suitable limiting hole 18 can be found to engage with the threaded pin regardless of the height the connecting pipe 1 is adjusted to, allowing for convenient and quick height fixing. In addition, replacing the threaded pin when it is worn or damaged is very convenient and will not affect the normal operation of the entire height adjustment assembly 14.

[0075] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application. The above are merely preferred embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. A cooling duct for the bottom of an electrolytic cell furnace, characterized in that, include: A connecting pipe (1) is provided with an outlet pipe (2) at intervals on the connecting pipe (1), and the outlet end of the outlet pipe (2) faces the bottom of the electrolytic cell furnace; Flange (3), the flange (3) is disposed on both ends of the connecting pipe (1), and the two connecting pipes (1) are connected to each other through the flange (3); An air supply assembly (4) is connected to the first end of the connecting pipe (1) after connection; A plug (5) is disposed on the second end of the connected pipe (1) after connection.

2. The electrolytic cell furnace bottom cooling duct according to claim 1, characterized in that, The gas outlet pipe (2) is provided with a gas nozzle (6), which is located below the bottom of the electrolytic cell furnace.

3. The electrolytic cell furnace bottom cooling duct according to claim 1, characterized in that, A regulating valve (7) is provided on the air outlet pipe (2).

4. The electrolytic cell furnace bottom cooling duct according to claim 1, characterized in that, The second end of the connecting pipe (1) is provided with a plug (8), and the first end of the connecting pipe (1) is provided with a plug groove that matches the plug (8).

5. The electrolytic cell furnace bottom cooling duct according to claim 4, characterized in that, The air supply assembly (4) includes: Gas source; An air intake pipe (9) is provided, the first end of which is connected to the air source. Connector (10), the connector (10) is disposed on the insertion slot, and the second end of the air intake pipe (9) is connected to the connector (10).

6. The electrolytic cell furnace bottom cooling duct according to claim 1, characterized in that, It also includes a movable frame (11), which includes a frame body (12) and casters (13). The connecting pipe (1) is disposed on the frame body (12), and the casters (13) are disposed at the bottom of the movable frame (11).

7. The electrolytic cell furnace bottom cooling duct according to claim 6, characterized in that, A height adjustment component (14) is provided between the frame (12) and the connecting pipe (1).

8. The electrolytic cell furnace bottom cooling duct according to claim 7, characterized in that, The height adjustment component (14) includes: Sleeve (15), the sleeve (15) is disposed on the frame (12); A plug rod (16) is provided on the side of the connecting pipe (1) away from the air outlet pipe (2), and the plug rod (16) is slidably disposed inside the sleeve (15); A limiting member (17) is provided on the sleeve (15) for fixing the plug rod (16).

9. The electrolytic cell furnace bottom cooling duct according to claim 8, characterized in that, The plug rod (16) is provided with a plurality of limiting holes (18) spaced apart.

10. The electrolytic cell furnace bottom cooling duct according to claim 9, characterized in that, The limiting member (17) is a threaded pin, which can be inserted into the limiting hole (18).

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