Temperature measuring device for monitoring temperature of flow field in electrolytic cell

Abstract

The utility model discloses a temperature measuring device for monitoring the temperature of a flow field in an electrolytic bath, which comprises a plurality of temperature measuring ports, a plurality of temperature sensors and a temperature monitor, and is characterized in that the plurality of temperature measuring ports are arranged on a polar plate of the electrolytic bath in a preset regular distribution manner; the plurality of temperature sensors are matched with the plurality of temperature measuring ports in a one-to-one correspondence manner, temperature measuring probes of the temperature sensors are respectively mounted in the corresponding temperature measuring ports, and the temperature measuring probes can measure the temperature of the electrolyte in the electrolytic bath at the positions corresponding to the temperature measuring ports through the temperature measuring ports; the temperature monitor is connected with the temperature sensors and used for receiving temperature information collected by the temperature sensors. According to the temperature measuring device, the temperature of the electrolyte in the electrolytic bath at the position corresponding to each temperature measuring port of the polar plate of the electrolytic bath can be monitored through the temperature sensor, and then the temperature distribution is displayed through the temperature monitor, so that the temperature distribution condition of a flow field in the electrolytic bath is obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic cells, and more particularly to a temperature measuring device for monitoring the temperature of a flow field in an electrolytic cell. Background Art

[0002] Electrolytic cell temperature is a core parameter in the electrolysis process, directly impacting electrolysis efficiency and product quality. Maintaining an appropriate temperature range helps ensure efficient electrolysis reactions while guaranteeing product quality and performance. Exceeding this range can lead to problems such as low electrolysis efficiency and unstable product quality. Accurate control of electrolytic cell temperature is also crucial for reducing energy consumption and costs. Data indicates that under-measured electrolytic cell temperatures in domestic aluminum plants can result in over-controlled electrolytic cell temperatures, leading to excessive energy consumption. For example, a 10-degree temperature increase can increase energy consumption by 2% to 3%. Therefore, accurately measuring and controlling electrolytic cell temperature helps achieve energy savings and reduce production costs.

[0003] The electrolysis reaction itself is exothermic. When the temperature inside the electrolytic cell is too high, the reaction accelerates and generates more heat. If the continuously generated heat cannot be dissipated in time, it may cause the reaction to run away, leading to dangerous situations such as partial melting of the cell and explosion. Therefore, by obtaining and effectively controlling the flow field temperature within the electrolytic cell, a stable and safe production process can be ensured.

[0004] Furthermore, accurate measurement and monitoring of electrolytic cell temperature is a key parameter for production managers to understand the cell's operating status. This helps them adjust and optimize the electrolysis process based on the cell's condition, improving efficiency and extending the cell's service life. Furthermore, the actual cell temperature can also reflect the cell's true overheat level, helping production managers more effectively control the cell temperature, reduce energy consumption per ton of primary aluminum, and achieve further energy conservation and emission reductions.

[0005] In summary, obtaining the flow field temperature within an electrolytic cell is crucial for improving electrolysis efficiency, reducing energy consumption, ensuring production safety, and optimizing production management. However, current electrolytic cell designs often use the cell and alkali temperatures as temperature detection points. This prevents thermocouples from penetrating the flow field, making the flow field temperature distribution unclear. Therefore, determining the flow field temperature distribution within an electrolytic cell has become a pressing technical challenge for those skilled in the art. Utility Model Content

[0006] In view of this, the utility model provides a temperature measuring device for monitoring the flow field temperature in an electrolytic cell, so as to obtain the temperature distribution of the flow field in the electrolytic cell.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] A temperature measuring device for monitoring the flow field temperature in an electrolytic cell, comprising:

[0009] A plurality of temperature measuring ports are arranged on the electrode plates of the electrolytic cell in a predetermined regular distribution;

[0010] A plurality of temperature sensors are adapted to the plurality of temperature measuring ports in a one-to-one correspondence, and a temperature measuring probe of each temperature sensor is respectively installed in the corresponding temperature measuring port, and the temperature measuring probe can measure the temperature of the electrolyte in the electrolytic cell at the position corresponding to the temperature measuring port through the temperature measuring port;

[0011] The temperature monitor is connected to each of the temperature sensors and is used to receive the temperature information collected by each of the temperature sensors.

[0012] In some embodiments of the present application, the temperature measuring port is configured to penetrate an insertion hole on the electrode plate, a temperature measuring cap that closes the first end of the insertion hole is provided at a first end of the insertion hole, and a temperature measuring probe of the temperature sensor is inserted into the insertion hole from a second end of the insertion hole and contacts the inner side of the temperature measuring cap;

[0013] The first end of the insertion hole is located on the side of the electrode plate in contact with the electrolyte in the electrolytic cell, and the second end of the insertion hole is located on the side of the electrode plate away from the electrolyte in the electrolytic cell.

[0014] In some embodiments of the present application, the temperature sensor includes a mounting portion for mounting a temperature measuring probe, and the mounting portion is threadedly connected to the insertion hole.

[0015] In some embodiments of the present application, the insertion hole is configured to have a stepped and gradually tapered structure from the second end toward the first end.

[0016] In some embodiments of the present application, the temperature measuring cap is constructed as a temperature measuring cap made of nickel-iron alloy; or, the temperature measuring cap is constructed as a temperature measuring cap made of nickel-plated carbon steel; or, the temperature measuring cap is constructed as a temperature measuring cap made of PSU plastic.

[0017] In some embodiments of the present application, the electrode plate is configured as a mastoid plate, and the temperature measuring port is arranged on the electrode plate so as to avoid the mastoid structure of the mastoid plate.

[0018] In some embodiments of the present application, the plurality of temperature measuring ports are distributed on a plurality of concentric circles on the electrode plate, and each of the concentric circles is provided with at least two evenly distributed temperature measuring ports.

[0019] In some embodiments of the present application, the plurality of temperature measuring ports are evenly distributed laterally on the electrode plate.

[0020] In some embodiments of the present application, the plurality of temperature measuring ports are evenly distributed along the longitudinal direction on the electrode plate; or, the plurality of temperature measuring ports are evenly distributed at equal angles on the electrode plate.

[0021] In some embodiments of the present application, the electrode plate is at least one of a bipolar plate, an anode plate, a cathode plate, and an end plate.

[0022] Compared with the background technology introduction, the above-mentioned temperature measuring device for monitoring the flow field temperature in the electrolytic cell includes multiple temperature measuring ports, multiple temperature sensors and a temperature monitor, wherein the multiple temperature measuring ports are arranged on the electrode plate of the electrolytic cell in a preset regular distribution manner; the multiple temperature sensors are adapted to the multiple temperature measuring ports in a one-to-one correspondence, and the temperature measuring probes of each temperature sensor are respectively installed in their corresponding temperature measuring ports, and the temperature measuring probes can measure the temperature of the electrolyte in the electrolytic cell at the corresponding position of the temperature measuring port through the temperature measuring port; the temperature monitor is connected to each temperature sensor for receiving the temperature information collected by each temperature sensor. In actual application, the temperature measuring device installs the temperature measuring probes of multiple temperature sensors into the temperature measuring ports at corresponding positions, so that the temperature sensors can monitor the temperature of the electrolyte in the electrolytic cell at the corresponding positions of each temperature measuring port on the electrode plate of the electrolytic cell. The temperature information collected by each temperature sensor is then received by the temperature monitor, and the temperature distribution is displayed by the temperature monitor to obtain the temperature distribution of the flow field in the electrolytic cell. This is used to guide the optimization of the flow field design of the electrolyte in the electrolytic cell, and ultimately maintain the electrolytic cell in the optimal temperature range under the fluctuation of renewable energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A schematic diagram of the structure of the temperature sensors provided by an embodiment of the present invention distributed on a plurality of concentric circles on the electrode plate;

[0025] Figure 2 A schematic diagram of the structure of the temperature measuring port in the electrode plate and the temperature measuring cap provided at the first end of the temperature measuring port provided in an embodiment of the present utility model;

[0026] Figure 3 This is a schematic structural diagram of a temperature sensor provided in an embodiment of the present utility model.

[0027] in, Figure 1-Figure 3 middle:

[0028] 1- Temperature measuring port;

[0029] 2-plate;

[0030] 20-mastoid structure;

[0031] 21-insertion hole;

[0032] 211-first end;

[0033] 212-second end;

[0034] 22- Temperature measuring cap;

[0035] 3- Temperature sensor;

[0036] 30-installation part;

[0037] 31-temperature probe;

[0038] 32-Extension cable. DETAILED DESCRIPTION

[0039] The core of the utility model is to provide a temperature measuring device for monitoring the flow field temperature in an electrolytic cell, so as to obtain the temperature distribution of the flow field in the electrolytic cell.

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] Reference Figure 1-Figure 3 As shown, the utility model provides a temperature measuring device for monitoring the flow field temperature in an electrolytic cell, comprising a plurality of temperature measuring ports 1, a plurality of temperature sensors 3 and a temperature monitor, wherein the plurality of temperature measuring ports 1 are arranged on the electrode plate 2 of the electrolytic cell in a manner distributed in a preset regular pattern; the plurality of temperature sensors 3 are adapted to the plurality of temperature measuring ports 1 in a one-to-one correspondence, and the temperature measuring probe 31 of each temperature sensor 3 is respectively installed in the corresponding temperature measuring port 1, and the temperature measuring probe 31 can measure the temperature of the electrolyte in the electrolytic cell at the corresponding position of the temperature measuring port 1 through the temperature measuring port 1; the temperature monitor is connected to each temperature sensor 3 for receiving the temperature information collected by each temperature sensor 3.

[0042] In actual application, the temperature measuring device installs the temperature measuring probes 31 of multiple temperature sensors 3 into the temperature measuring ports 1 at corresponding positions, so that the temperature sensors 3 can monitor the temperature of the electrolyte in the electrolytic cell at the corresponding positions of each temperature measuring port 1 on the electrode plate of the electrolytic cell. The temperature information collected by each temperature sensor 3 is then received by the temperature monitor, and the temperature distribution is displayed by the temperature monitor, thereby obtaining the temperature distribution of the flow field in the electrolytic cell, thereby guiding the optimization of the flow field design of the electrolyte in the electrolytic cell, and ultimately maintaining the electrolytic cell in the optimal temperature range under the fluctuation of renewable energy.

[0043] In some specific embodiments, reference Figure 2 As shown, the temperature measuring port 1 can be specifically constructed as an insertion hole 21 extending through the electrode plate 2. A temperature measuring cap 22 is provided at the first end 211 of the insertion hole 21, sealing the first end. The temperature measuring probe 31 of the temperature sensor 3 is inserted into the insertion hole 21 from the second end 212 of the insertion hole 21 and contacts the inner side of the temperature measuring cap 22. The first end 211 of the insertion hole 21 is located on the side of the electrode plate 2 that contacts the electrolyte in the electrolytic cell, while the second end 212 of the insertion hole 21 is located on the side of the electrode plate 2 that is away from the electrolyte in the electrolytic cell. The temperature measuring cap 22 is primarily used to prevent the electrolyte in the electrolytic cell from entering the side of the electrode plate 2 that is away from the electrolyte through the passage of the insertion hole 21. It is also necessary to enable the temperature measuring probe 31 of the temperature sensor 3 that contacts the inner side of the temperature measuring cap 22 to obtain the temperature of the electrolyte at the corresponding position through the temperature measuring cap 22. The wall thickness of the temperature measuring cap 22 is generally designed to be thin, for example, 1.5±0.5 mm. By designing the above-mentioned structural form, the adaptation and installation between the temperature sensor 3 and the temperature measuring port 1 are made more convenient.

[0044] In some specific embodiments, the temperature sensor 3 further includes a mounting portion 30 for mounting a temperature probe 31, and the mounting portion 30 is preferably but not limited to being threadedly connected to the insertion hole 21. By designing the above-mentioned structural form, the installation of the temperature sensor 3 is more convenient. It should be noted that the temperature sensor 3 generally includes a temperature probe 31 and an extension cable 32, and the temperature probe 31 of each temperature sensor 3 can be connected to the temperature monitor via the extension cable 32. The temperature sensor 3 can further include a resistor, and the resistor can be designed into an integrated structure with the extension cable 32. The resistor material includes but is not limited to platinum, nickel, chromium, tungsten, molybdenum, iron, manganese, alloy, carbon film, silicon, gallium arsenide, etc. In actual application, the configuration can be selected according to actual needs, and no more specific limitations are given here.

[0045] In some more specific embodiments, the insertion hole 21 can be configured to have a stepped, tapered structure from the second end 212 toward the first end 211. This stepped, tapered structure makes it easier to determine the insertion depth of the temperature probe 31 after insertion into the insertion hole 21, thereby facilitating easier assembly. Furthermore, since the temperature probe 31 is a relatively fragile component, this stepped, tapered structure helps ensure that a significant compressive force is not generated when the temperature probe 31 contacts the temperature cap 22, thereby preventing damage to the temperature probe 31.

[0046] In other specific embodiments, the temperature measuring cap 22 may be made of nickel-iron alloy, nickel-plated carbon steel, or PSU plastic. In actual applications, the material of the temperature measuring cap may be selected based on specific needs, and no further specific limitations are given here.

[0047] In some specific embodiments, the above-mentioned electrode plate 2 can be specifically constructed as a mastoid plate, wherein the design of the mastoid plate has a spherical concave-convex structure, and these concave-convex structures appear in the shape of mastoids on the electrode plate. The design of the mastoid plate can increase the surface area of ​​the electrode plate and improve the efficiency of the electrode reaction, thereby realizing large-capacity hydrogen energy storage and release. The design and material selection of the mastoid plate can reduce the corrosion of hydrogen and electrolyte and extend the service life of the electrode. The design of the mastoid plate can avoid hydrogen leakage and electrolyte leakage, and prevent the occurrence of safety accidents such as fire and explosion. The more mastoids there are, the lower the contact resistance between the electrode plate and the electrode, the lower the cell voltage, and the probability of large bubbles forming in the electrolyte, but the manufacturing cost will increase. It should be noted that when the electrode plate 2 adopts a mastoid plate, the arrangement position of the temperature measuring port 1 on the electrode plate 2 should avoid the mastoid structure 20 of the mastoid plate.

[0048] It should be noted that the aforementioned multiple temperature measuring ports 1 are arranged on the electrode plate 2 of the electrolytic cell in a predetermined regular distribution. Specifically, the multiple temperature measuring ports 1 may be distributed on multiple concentric circles on the electrode plate 2, and each concentric circle is provided with at least two evenly distributed temperature measuring ports 1. Of course, it is understood that the aforementioned multiple temperature measuring ports 1 distributed on multiple concentric circles on the electrode plate 2 should be generally evenly distributed on the multiple concentric circles on the electrode plate 2. For example, when the electrode plate 2 adopts a mastoid plate, there may be slight positional deviations to avoid the mastoid structure 20 of the mastoid plate.

[0049] In addition, the aforementioned multiple temperature measuring ports 1 are arranged on the electrode plate 2 of the electrolytic cell in a predetermined regular distribution. Alternatively, the multiple temperature measuring ports 1 may be evenly distributed in the horizontal direction on the electrode plate 2, or evenly distributed in the vertical direction on the electrode plate 2, or evenly distributed at equal angles on the electrode plate 2. In actual application, the arrangement can be selected according to actual requirements, and no further specific limitation is given here.

[0050] It should be noted that the aforementioned electrode plate 2 can specifically be at least one of the four types of bipolar plates, anode plates, cathode plates, and end plates of the electrolytic cell. For example, the aforementioned electrode plate 2 can specifically refer to the bipolar plate of the electrolytic cell, the anode plate of the electrolytic cell, the cathode plate of the electrolytic cell, or the end plate of the electrolytic cell; for another example, the electrode plate 2 can also refer to two electrode plate structures, three electrode plate structures, or four electrode plate structures among the bipolar plate, anode plate, cathode plate, and end plate of the electrolytic cell. In actual application, the configuration can be selected according to actual needs, and no further specific limitations are given here.

[0051] It should also be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0052] As used in this application and the claims, unless the context clearly indicates an exception, the terms "a," "an," "an," and / or "the" are not intended to refer to the singular and may include the plural, unless the context clearly indicates otherwise. Generally speaking, the terms "comprises" and "include" only indicate the inclusion of the steps and elements specifically identified, and these steps and elements do not constitute an exclusive list. A method or apparatus may also include other steps or elements. The phrase "comprises a..." does not preclude the presence of additional identical elements in the process, method, product, or apparatus that includes the elements.

[0053] In the description of the embodiments of this application, unless otherwise specified, " / " represents or. For example, A / B can represent A or B. "And / or" in this article is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of this application, "plurality" means two or more than two.

[0054] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0055] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help you understand the core concept of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A temperature measuring device for monitoring the flow field temperature in an electrolytic cell, characterized in that: include: A plurality of temperature measuring ports (1) are arranged on the electrode plate (2) of the electrolytic cell in a manner distributed in a predetermined regular pattern; A plurality of temperature sensors (3) are adapted to the plurality of temperature measuring ports (1) in a one-to-one correspondence, and a temperature measuring probe (31) of each temperature sensor (3) is respectively installed in the corresponding temperature measuring port (1), and the temperature measuring probe (31) can measure the temperature of the electrolyte in the electrolytic cell at the position corresponding to the temperature measuring port (1) through the temperature measuring port (1); The temperature monitor is connected to each of the temperature sensors (3) and is used to receive the temperature information collected by each of the temperature sensors (3).

2. The temperature measuring device for monitoring the flow field temperature in an electrolytic cell according to claim 1, characterized in that: The temperature measuring port (1) is configured to penetrate the insertion hole (21) on the electrode plate (2); a first end (211) of the insertion hole (21) is provided with a temperature measuring cap (22) that closes the first end; a temperature measuring probe (31) of the temperature sensor (3) is inserted into the insertion hole (21) from the second end (212) of the insertion hole (21) and contacts the inner side of the temperature measuring cap (22); The first end (211) of the insertion hole (21) is located on the side of the electrode plate (2) in contact with the electrolyte in the electrolytic cell, and the second end (212) of the insertion hole (21) is located on the side of the electrode plate (2) away from the electrolyte in the electrolytic cell.

3. The temperature measuring device for monitoring the flow field temperature in the electrolytic cell according to claim 2, characterized in that: The temperature sensor (3) comprises a mounting portion (30) for mounting a temperature measuring probe (31), and the mounting portion (30) is threadedly connected to the insertion hole (21).

4. The temperature measuring device for monitoring the flow field temperature in an electrolytic cell according to claim 2, characterized in that: The insertion hole (21) is configured as a structure that tapers stepwise from the second end (212) toward the first end (211).

5. The temperature measuring device for monitoring the flow field temperature in an electrolytic cell according to claim 2, characterized in that: The temperature measuring cap (22) is constructed as a temperature measuring cap (22) made of nickel-iron alloy; or, the temperature measuring cap (22) is constructed as a temperature measuring cap (22) made of carbon steel plated with nickel; or, the temperature measuring cap (22) is constructed as a temperature measuring cap (22) made of PSU plastic.

6. The temperature measuring device for monitoring the flow field temperature in an electrolytic cell according to claim 1, characterized in that: The electrode plate (2) is configured as a mastoid plate, and the temperature measuring port (1) is arranged on the electrode plate (2) at a position avoiding the mastoid structure (20) of the mastoid plate.

7. The temperature measuring device for monitoring the flow field temperature in an electrolytic cell according to claim 1, characterized in that: The plurality of temperature measuring ports (1) are distributed on a plurality of concentric circles on the electrode plate (2), and each of the concentric circles is provided with at least two evenly distributed temperature measuring ports (1).

8. The temperature measuring device for monitoring the flow field temperature in an electrolytic cell according to claim 1, characterized in that: The plurality of temperature measuring ports (1) are evenly distributed in the transverse direction on the electrode plate (2); Alternatively, the plurality of temperature measuring ports (1) are evenly distributed along the longitudinal direction on the electrode plate (2).

9. The temperature measuring device for monitoring the flow field temperature in an electrolytic cell according to claim 1, characterized in that: The plurality of temperature measuring ports (1) are evenly distributed at equal angles on the electrode plate (2).

10. The temperature measuring device for monitoring the flow field temperature in an electrolytic cell according to any one of claims 1 to 9, characterized in that: The electrode plate (2) is at least one of a bipolar plate, an anode plate, a cathode plate and an end plate.

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