Electrolytic aluminum tank cover plate with efficient heat insulation performance

Abstract

The utility model provides an electrolytic aluminum tank cover plate with efficient heat insulation performance, which comprises a tank cover plate main body, two ceramic pasting cavities are arranged in the tank cover plate main body, and a heat insulation ceramic plate is arranged in each ceramic pasting cavity; a packaging side cover is fixedly installed on the side face of the groove cover plate body. A cover plate outer frame and a smoke exhaust channel are installed outside the groove cover plate body, and the smoke exhaust channel is communicated with a smoke inlet hole formed in the groove cover plate body. The smoke exhaust channels are communicated with each other through the butt joint channel piece; an upper smoke blocking plate and a lower smoke blocking plate are arranged on the inner side of the groove cover plate body. The structure is strengthened, and meanwhile the heat insulation effect is improved. And the internal ceramic pasting cavity is matched with the heat insulation ceramic plate to form an efficient heat insulation layer, so that the high-temperature resistance is enhanced, and stable operation of equipment is guaranteed. The external smoke exhaust channel is communicated with the smoke inlet hole, an effective smoke exhaust path is constructed through the butt joint channel piece, and smoke is exhausted efficiently. The upper smoke blocking plate and the lower smoke blocking plate are bent inwards, smoke leakage is prevented, smoke is guided to be discharged in order, and leakage along the sliding connection position is avoided.

Description

Technical Field

[0001] This utility model belongs to the technical field of electrolytic cell cover plates, and particularly relates to an electrolytic aluminum cell cover plate with high-efficiency heat insulation performance. Background Technology

[0002] During the electrolytic aluminum production process, the chemical reactions within the electrolytic aluminum cell generate a large amount of high-temperature flue gas. Existing electrolytic aluminum cells have significant design flaws, causing the inner side of the cell to become a region where flue gas accumulates. Due to the lack of effective flue gas guidance and collection structures, this high-temperature flue gas accumulates near the cell cover plate for extended periods, subjecting the cover plate to continuous high-temperature exposure and significantly impacting its service life and performance stability.

[0003] Meanwhile, the current high-temperature resistance design of aluminum electrolytic cells relies excessively on a single material. Once this material degrades due to prolonged high temperatures, chemical corrosion, or other factors, the overall high-temperature resistance of the electrolytic cell drops sharply. A single-material structure struggles to cope with complex operating conditions, such as the combined effects of high temperatures, strong corrosion, and mechanical stress, failing to provide reliable and durable thermal insulation. Furthermore, this single-material structure lacks buffering and adjustment mechanisms when facing sudden high-temperature shocks, easily leading to instantaneous material damage. This, in turn, affects the continuity and stability of aluminum electrolytic production, increasing production risks and costs.

[0004] Therefore, it is essential to invent an electrolytic aluminum tank cover with high-efficiency heat insulation performance. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides an electrolytic aluminum trough cover plate with high-efficiency heat insulation performance, comprising the trough cover plate body, ceramic-coated cavities, heat-insulating ceramic plates, encapsulation side covers, an outer frame of the cover plate, a smoke exhaust channel, a smoke inlet, a connecting channel component, an upper smoke barrier plate, and a lower smoke barrier plate. The trough cover plate body has two ceramic-coated cavities inside, each containing a heat-insulating ceramic plate. An encapsulation side cover is fixedly installed on the side of the trough cover plate body. An outer frame and a smoke exhaust channel are installed on the outside of the trough cover plate body, and the smoke exhaust channel communicates with the smoke inlet of the trough cover plate body. The smoke exhaust channels are interconnected through the connecting channel component. The upper and lower smoke barrier plates are located on the inner side of the trough cover plate body.

[0006] Preferably, the main body of the trough cover plate is an arc-shaped structure made of high heat insulation material, which is integrally set together with the outer frame of the outer cover plate, and the two ends of the main body of the trough cover plate are slidably installed together with the electrolytic aluminum trough.

[0007] Preferably, the two ceramic-coated cavities inside the main body of the trough cover plate are arc-shaped cavities, and the ceramic-coated cavities are lined with a number of curved ceramic plates forming a heat-insulating ceramic plate, which fits the shape of the ceramic-coated cavity.

[0008] Preferably, the smoke inlet hole of the trough cover plate body is located between the two ceramic tile cavities, and the smoke inlet hole is located in the middle of the trough cover plate body.

[0009] Preferably, the smoke exhaust channel installed on the outside of the main body of the trough cover plate is a rectangular structure, and the smoke exhaust channel is connected to the inner space of the main body of the trough cover plate through the smoke inlet hole.

[0010] Preferably, an upper smoke-blocking plate is installed on the upper inner side of the main body of the trough cover plate, and a lower smoke-blocking plate is installed on the lower inner side of the main body of the trough cover plate. Both the upper and lower smoke-blocking plates are bent inward and are located on the inner side of the sliding connection between the main body of the trough cover plate and the electrolytic aluminum trough.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] The main body of the sump cover plate of this utility model is made of high-insulation material in an arc shape and is integrally set with the outer frame of the cover plate, which enhances the overall structural strength and heat insulation performance. Two arc-shaped ceramic-lined cavities are set inside, and the heat-insulating ceramic plate fitted into each cavity fits the shape of the cavity, forming a highly efficient heat insulation layer. This multi-layer composite heat insulation structure can effectively block the heat transfer of high-temperature flue gas in the electrolytic aluminum cell, greatly reducing the thermal impact on the cover plate caused by the accumulation of high-temperature flue gas, improving the high-temperature resistance and service life of the cover plate, and ensuring the stable operation of the electrolytic aluminum cell.

[0013] The exhaust channel installed on the outside of the main body of the sump cover plate of this utility model is connected to the exhaust hole opened in the main body of the sump cover plate, and they are interconnected through connecting channel parts to form an effective exhaust path. This design allows the flue gas generated during electrolysis to be discharged quickly, solving the problem of flue gas accumulation in existing electrolytic aluminum sump plates, improving flue gas treatment efficiency, and improving the production environment.

[0014] Meanwhile, the upper smoke-blocking plate on the upper side and the lower smoke-blocking plate on the lower side of the inner side of this utility model are both bent inward and located on the inner side of the sliding connection between the main body of the tank cover plate and the electrolytic aluminum tank, which effectively prevents the leakage of flue gas, guides the flue gas into the exhaust channel in an orderly manner, and prevents the flue gas from being discharged outward along the sliding connection structure. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2This is a schematic diagram of the protruding structure of the heat-insulating ceramic plate of this utility model.

[0017] Figure 3 This is a schematic diagram of the inner structure of this utility model.

[0018] In the picture:

[0019] 1. Main body of the duct cover plate; 2. Ceramic cavity; 3. Insulating ceramic plate; 4. Encapsulated side cover; 5. Outer frame of the cover plate; 6. Smoke exhaust channel; 7. Smoke inlet hole; 8. Connecting channel component; 9. Upper smoke barrier plate; 10. Lower smoke barrier plate. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0021] In the description of the embodiments, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present utility model based on the specific circumstances.

[0022] As attached Figure 1 To be continued Figure 3 As shown:

[0023] This utility model provides an electrolytic aluminum trough cover plate with high-efficiency heat insulation performance, comprising a trough cover plate body 1, ceramic-coated cavities 2, heat-insulating ceramic plates 3, encapsulated side covers 4, an outer frame 5, a smoke exhaust channel 6, a smoke inlet 7, a connecting channel component 8, an upper smoke barrier plate 9, and a lower smoke barrier plate 10. The trough cover plate body 1 has two ceramic-coated cavities 2 inside, each containing a heat-insulating ceramic plate 3. An encapsulated side cover 4 is fixedly installed on the side of the trough cover plate body 1. An outer frame 5 and a smoke exhaust channel 6 are installed on the outside of the trough cover plate body 1, and the smoke exhaust channel 6 communicates with the smoke inlet 7 in the trough cover plate body 1. The smoke exhaust channels 6 are interconnected through the connecting channel component 8. The upper smoke barrier plate 9 and the lower smoke barrier plate 10 are arranged on the inner side of the trough cover plate body 1.

[0024] Furthermore, the main body 1 of the trough cover plate is made of a high-insulation material, such as ceramic fiber composite material, which has excellent heat insulation properties and can effectively prevent heat transfer. It is designed with an arc shape, the curvature of which is customized according to the actual shape of the electrolytic aluminum trough to ensure a close fit. The main body 1 of the trough cover plate and the outer frame 5 of the cover plate are integrated, and the manufacturing process can use integral molding, enhancing the stability and integrity of the structure. The two ends of the main body 1 of the trough cover plate are designed with a special sliding connection structure. Through the cooperation of sliders with the slide rails of the electrolytic aluminum trough, a sliding connection installation is achieved, ensuring convenient installation and disassembly. At the same time, it ensures that the main body 1 of the trough cover plate can slide freely with the thermal expansion and contraction of the electrolytic aluminum trough during production, avoiding structural damage due to thermal stress.

[0025] Furthermore, the main body 1 of the trough cover plate has two arc-shaped ceramic-coated cavities 2, the curvature of which matches the curvature of the main body 1. Each ceramic-coated cavity 2 contains numerous curved ceramic plates forming an insulating ceramic plate 3. The insulating ceramic plate 3 is made of alumina ceramic, which is resistant to high temperatures and has excellent thermal insulation properties. Its dimensions are custom-cut according to the specific dimensions of the ceramic-coated cavity 2 to ensure a tight, seamless fit, maximizing the thermal insulation effect. This design allows the insulating ceramic plate 3 to effectively block heat transfer from the inside of the electrolytic aluminum trough to the outside of the trough cover plate 1, further improving the thermal insulation performance of the trough cover plate.

[0026] Furthermore, the smoke inlet 7 on the main body 1 of the trough cover plate is located between the two ceramic-coated cavities 2 and in the middle of the main body 1. The smoke inlet 7 is circular in shape to ensure that the flue gas generated in the electrolytic aluminum cell can smoothly enter the exhaust channel 6. The number of smoke inlets 7 is determined according to the size of the main body 1 of the trough cover plate and the amount of flue gas generated, and they are evenly distributed in the middle part of the main body 1 of the trough cover plate to ensure the uniformity and efficiency of flue gas collection.

[0027] Furthermore, the exhaust duct 6 installed on the outside of the main body 1 of the sump cover plate is a rectangular structure, made of high-temperature resistant stainless steel, such as 310S stainless steel, to withstand the corrosion of high-temperature flue gas. The cross-sectional dimensions of the exhaust duct 6 are designed according to the flue gas flow rate and velocity. The exhaust duct 6 communicates with the inner space of the main body 1 of the sump cover plate through the smoke inlet 7, and the connection is made using a sealed welding process to ensure the airtightness of the connection and prevent flue gas leakage. The length of the exhaust duct 6 is determined according to the layout of the electrolytic aluminum sump and the location of the flue gas treatment system.

[0028] Furthermore, an upper smoke-blocking plate 9 is installed on the upper inner side of the main body 1 of the sump cover, and a lower smoke-blocking plate 10 is installed below it. Both the upper smoke-blocking plate 9 and the lower smoke-blocking plate 10 are made of high-temperature resistant alloy materials, such as nickel-chromium alloy. They are both bent inward to better block flue gas leakage. The upper smoke-blocking plate 9 and the lower smoke-blocking plate 10 are located on the inner side of the sliding connection between the main body 1 of the sump cover and the electrolytic aluminum tank, and their length is the same as the width of the main body 1 of the sump cover, ensuring that an effective smoke barrier is formed at the sliding connection. Through this design, flue gas can be effectively prevented from leaking from the sliding connection between the main body 1 of the sump cover and the electrolytic aluminum tank, improving the efficiency of flue gas collection and treatment, and reducing pollution to the production environment.

[0029] The working principle is as follows: First, during the electrolytic aluminum production process, a large amount of heat and flue gas are generated inside the electrolytic aluminum tank. At this time, the main body 1 of the tank cover plate plays an important role. Its ceramic fiber composite material, which is highly heat-insulating, initially blocks the diffusion of heat to the external environment. At the same time, the arc-shaped structure of the main body 1 of the tank cover plate fits tightly against the electrolytic aluminum tank, reducing heat loss from the bonding surface.

[0030] Next, for further heat insulation, the two ceramic-lined cavities 2 inside the main body 1 of the sump cover plate and the heat-insulating ceramic plate 3 inside them play a key role. The heat-insulating ceramic plate 3, made of alumina ceramic plate, with its excellent high-temperature resistance and heat insulation performance, further blocks the heat transferred from the inside of the electrolytic aluminum tank to the main body 1 of the sump cover plate, greatly reducing the amount of heat transferred to the outside through the main body 1 of the sump cover plate, and enhancing the overall heat insulation effect.

[0031] In terms of flue gas treatment, the flue gas generated in the electrolytic aluminum cell can smoothly and evenly enter the flue gas through the flue gas inlet holes 7, which are located between the two ceramic-coated cavities 2 and in the middle position, and the number of flue gas inlet holes 7 is determined according to the size of the flue gas inlet plate 1 and the amount of flue gas generated.

[0032] Subsequently, the flue gas entering the inlet 7 flows into the connected exhaust duct 6. The exhaust duct 6 is made of high-temperature resistant stainless steel, such as 310S stainless steel, capable of withstanding the corrosive effects of high-temperature flue gas. Its rectangular structure and cross-sectional dimensions designed according to the flue gas flow rate and velocity ensure efficient flue gas flow within the duct. The exhaust duct 6 connects to the inner space of the duct cover plate body 1 via the inlet 7, and the connection is sealed by welding to prevent flue gas leakage. Simultaneously, multiple exhaust ducts 6 are interconnected via connecting channel components 8, forming a complete flue gas collection network that centrally guides the flue gas to the subsequent flue gas treatment system.

[0033] Finally, to prevent flue gas from leaking from the sliding connection between the sump cover plate body 1 and the electrolytic aluminum tank, the upper smoke-blocking plate 9 and the lower smoke-blocking plate 10 on the inner side of the sump cover plate body 1 come into play. They are made of nickel-chromium alloy, bent inwards, and have the same length as the width of the sump cover plate body 1. Located inside the sliding connection, they form an effective smoke barrier, blocking any leaking flue gas and guiding it to the smoke inlet 7, and then into the exhaust channel 6. This improves the efficiency of flue gas collection and treatment, and reduces pollution to the production environment.

[0034] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. An electrolytic aluminum tank cover with high-efficiency heat insulation performance, characterized in that, The system includes a main body (1), ceramic-coated cavities (2), heat-insulating ceramic plates (3), encapsulation side covers (4), outer frame (5), smoke exhaust channels (6), smoke inlets (7), connecting channel components (8), upper smoke-blocking plates (9), and lower smoke-blocking plates (10). The main body (1) has two ceramic-coated cavities (2) inside, and each ceramic-coated cavity (2) is equipped with a heat-insulating ceramic plate (3). The side of the main body (1) is fixedly installed with an encapsulation side cover (4). The outer frame (5) and smoke exhaust channels (6) are installed on the outside of the main body (1). The smoke exhaust channels (6) are connected to the smoke inlets (7) of the main body (1). The smoke exhaust channels (6) are interconnected through the connecting channel components (8). The upper smoke-blocking plates (9) and lower smoke-blocking plates (10) are provided on the inside of the main body (1).

2. The electrolytic aluminum tank cover plate with high-efficiency heat insulation performance as described in claim 1, characterized in that: The main body (1) of the trough cover plate is an arc-shaped structure made of high heat insulation material. It is integrally set together with the outer frame (5) of the outer cover plate. The two ends of the main body (1) of the trough cover plate are slidably installed together with the electrolytic aluminum trough.

3. The electrolytic aluminum tank cover plate with high-efficiency heat insulation performance as described in claim 2, characterized in that: The two ceramic-coated cavities (2) inside the main body (1) of the trough plate are arc-shaped cavities. The ceramic-coated cavities (2) are filled with a number of curved ceramic plates forming a heat-insulating ceramic plate (3). The heat-insulating ceramic plate (3) matches the shape of the ceramic-coated cavity (2).

4. The electrolytic aluminum tank cover plate with high-efficiency heat insulation performance as described in claim 3, characterized in that: The main body (1) of the trough cover plate has a smoke inlet hole (7) located between the two ceramic tile cavities (2), and the smoke inlet hole (7) is located in the middle of the main body (1).

5. The electrolytic aluminum tank cover plate with high-efficiency heat insulation performance as described in claim 4, characterized in that: The smoke exhaust channel (6) installed on the outside of the main body (1) of the trough cover plate is a rectangular structure, and the smoke exhaust channel (6) is connected to the inner space of the main body (1) of the trough cover plate through the smoke inlet (7).

6. The electrolytic aluminum tank cover plate with high-efficiency heat insulation performance as described in claim 5, characterized in that: An upper smoke-blocking plate (9) is installed on the upper inner side of the main body (1) of the trough cover plate, and a lower smoke-blocking plate (10) is installed on the lower inner side of the main body (1) of the trough cover plate. Both the upper smoke-blocking plate (9) and the lower smoke-blocking plate (10) are bent inward. The upper smoke-blocking plate (9) and the lower smoke-blocking plate (10) are located on the inner side of the sliding connection between the main body (1) of the trough cover plate and the electrolytic aluminum trough.

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