Electrolytic tank three-steel temperature on-line monitoring device

Abstract

The utility model relates to the technical field of temperature monitoring. The electrolytic bath three-steel temperature on-line monitoring device comprises a base body, a shell and an induction assembly, the shell is arranged on the base body, an opening is formed in the shell, the induction assembly is arranged at the opening, a signal transmission assembly is arranged on the base body, the induction assembly is connected with the signal transmission assembly, and the signal transmission assembly is connected with the shell. A mounting part is arranged on the base body; wherein the mounting part is used for connecting the base body with the electrolytic bath three-steel to be tested. Manual point-by-point temperature measurement is replaced by the online monitoring device, and the problems that in existing electrolytic cell three-steel temperature monitoring in the electrolytic aluminum industry, the safety risk of manual operation is high, the labor intensity is large, the efficiency is low, the discreteness of manual measurement data is large, the temperature change trend cannot be reflected in real time, and accidents cannot be early warned in time are solved.

Description

Technical Field

[0001] This utility model relates to the field of temperature monitoring technology, and more specifically, to an online temperature monitoring device for the three steel plates of an electrolytic cell. Background Technology

[0002] Currently, my country's electrolytic aluminum industry mainly uses cryolite-alumina molten salt electrolysis for production. Among these processes, accurate monitoring of the temperature of the three steel components (steel claws, steel bars, and steel busbars) of the electrolytic cell is crucial for the safe and stable operation of the electrolytic cell.

[0003] Traditional monitoring methods rely on manual measurement using portable thermometers at each point, which has the following prominent problems: First, the internal space of the electrolytic cell is small and it is in a high-temperature and strong magnetic field environment, making manual operation highly risky; second, dozens of points need to be measured multiple times a day, which is labor-intensive and inefficient; third, the data measured manually is highly discrete, making it difficult to reflect the temperature change trend in real time and unable to provide timely warnings of accidents such as leaks. Utility Model Content

[0004] The purpose of this utility model is to provide an online temperature monitoring device for the three steel sections of an electrolytic cell, which aims to solve the problems of high safety risks, high labor intensity and low efficiency of manual operation in the current electrolytic aluminum industry temperature monitoring of the three steel sections of an electrolytic cell, as well as the large dispersion of manual measurement data, which cannot reflect the temperature change trend in real time and provide timely early warning of accidents.

[0005] This utility model is achieved through the following technical solution:

[0006] An online temperature monitoring device for the three steel plates of an electrolytic cell includes: a base, a shell, and a sensing component. The shell is disposed on the base and has an opening. The sensing component is disposed at the opening. A signal transmission component is disposed on the base and connected to the signal transmission component. A mounting part is disposed on the base.

[0007] The mounting part is used to connect the substrate to the three steel plates of the electrolytic cell to be tested.

[0008] Optionally, the sensing component is slidably connected to the housing.

[0009] Optionally, the housing is a telescopic structure.

[0010] Optionally, the substrate is provided with an interface; wherein the interface is used to connect to an external device.

[0011] Optionally, the interface is a USB interface.

[0012] Optionally, it also includes a protective component, one side of which is connected to the base, the other side of which is fastened to the base, and the middle of which covers the interface.

[0013] Optionally, the protective component is provided with an interface protector, the shape of which corresponds to the interface.

[0014] Optionally, the mounting part is provided with mounting holes.

[0015] Optionally, it also includes a display component connected to the signal transmission component.

[0016] Optionally, the sensing component is a thermocouple.

[0017] The technical solution of this utility model has at least the following advantages and beneficial effects:

[0018] Improve operational safety: By replacing manual point-by-point temperature measurement with online monitoring devices, personnel are prevented from entering the high-temperature and strong magnetic field environment inside the electrolytic cell, significantly reducing operational safety risks and ensuring the personal safety of operators.

[0019] Improve monitoring efficiency and continuity: Achieve fully automated real-time monitoring without frequent manual operation, and collect data continuously 24 hours a day, effectively reducing labor intensity and avoiding monitoring blind spots caused by manual measurement intervals, thereby improving production efficiency.

[0020] Enhanced data accuracy and early warning capabilities: The sensing components transmit temperature data in real time, and the signal transmission components enable dynamic monitoring, reducing the data dispersion of manual measurements. This allows for accurate capture of temperature change trends, timely detection of abnormalities such as leaks, and early warning, ensuring the safe and stable operation of the electrolytic cell.

[0021] Compact structure and strong adaptability: The installation section is designed to facilitate quick fixation of the device to the electrolytic cell, adapting to the installation requirements of narrow spaces; the housing protects the sensing components from external environmental interference, ensuring long-term stable operation and extending the service life of the equipment. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the online temperature monitoring device for the three steel sections of the electrolytic cell according to an embodiment of this utility model;

[0023] Figure 2 This is a schematic diagram of the main structure of the online temperature monitoring device for the three steel sections of the electrolytic cell according to an embodiment of this utility model;

[0024] Figure 3 This is a top view schematic diagram of the online temperature monitoring device for the three steel sections of an electrolytic cell according to an embodiment of this utility model;

[0025] Figure 4 A schematic diagram of the overall structure of the online temperature monitoring device for the three steel sections of an electrolytic cell according to an embodiment of this utility model, after the installation of protective components;

[0026] Icons: 1-Base, 101-Interface, 102-Signal transmission component, 103-Mounting part, 2-Housing, 3-Sensing component, 4-Protective component, 401-Interface protection component. Detailed Implementation

[0027] The following is a detailed description of the embodiments, in conjunction with the accompanying drawings.

[0028] Reference Figure 1 , Figure 2 , Figure 3 An online temperature monitoring device for the three steel sections of an electrolytic cell includes: a base 1, a housing 2, and a sensing component 3. The housing 2 is mounted on the base 1 and has an opening. The sensing component 3 is located at the opening. A signal transmission component 102 is mounted on the base 1, and the sensing component 3 is connected to the signal transmission component 102. A mounting part 103 is provided on the base 1; wherein, the mounting part 103 is used to connect the base 1 to the three steel sections of the electrolytic cell to be measured. The base 1 can be made of high-temperature resistant and corrosion-resistant stainless steel or ceramic material to ensure long-term stable operation in the high-temperature (900-950℃) and strong magnetic field environment of the electrolytic cell. The base 1 integrates a signal processing module and a power supply module, which can be quickly assembled with the housing 2 by bolts or clips for easy maintenance and replacement. The sensing component 3 can be an infrared array sensor (such as MLX90640) or a sheathed thermocouple (such as a K-type thermocouple), supporting multi-point synchronous temperature monitoring and improving data coverage. The signal transmission component 102 can use optical fiber or double-shielded cable, combined with a magnetic shielding layer design, to effectively resist interference from the strong magnetic field of the electrolytic cell. The signal transmission component 102 can integrate a LoRa or 5G module to achieve real-time data upload to the monitoring platform, supporting remote monitoring and early warning. The mounting part 103 can be welded onto the three steel rods of the electrolytic cell. The mounting part 103 can also use a high-temperature resistant samarium cobalt magnet (temperature resistance ≥1000℃), which can be quickly adsorbed onto the surface of the steel rod or busbar. A silicone rubber sealing ring is used at the connection between the housing 2 and the base 1, with an IP67 protection rating to prevent electrolyte splashing. A built-in micro air-cooling or water-cooling channel ensures that the sensor's operating temperature is ≤85℃ in high-temperature environments, extending its service life. An integrated temperature drift compensation algorithm is used to periodically calibrate sensor data using a reference point. A microprocessor (such as an STM32H7) is embedded in the base 1 to locally analyze abnormal temperature fluctuations in real time and trigger early warning thresholds.

[0029] In some embodiments, the sensing component 3 is slidably connected to the housing 2. A high-temperature resistant ceramic guide rail (such as alumina ceramic) is provided on the inner wall of the housing 2, and a matching metal slider (such as 316L stainless steel) is fixed to the back of the sensing component 3, forming a precision sliding pair with the guide rail. The surface of the guide rail is coated with a molybdenum disulfide lubricating layer to reduce frictional resistance and resist high temperatures. The guide rail adopts a dovetail groove shape, and the slider is embedded in the groove. Sliding damping control is achieved by a spring plate or magnetic attraction structure to ensure that the sensing component 3 is locked in any position. The sliding connection uses a silicone rubber sealing ring (temperature resistance ≥200℃) in conjunction with a metal pressure ring. The sealing ring is compressed by a pre-tightening bolt to form a dynamic sealing structure. A miniature air pump is installed inside the housing 2 to periodically inject dry nitrogen into the sliding gap to prevent electrolyte vapor penetration. A disc spring assembly (made of high-temperature resistant alloy material) can be integrated between the sensing component 3 and the housing 2. When the sliding is in place, the spring assembly provides a constant pressure (such as 5-10N) to ensure that the sensor is in close contact with the measured surface and to compensate for changes in the installation gap caused by thermal expansion and contraction. The spring assembly monitors the ambient temperature in real time via a temperature sensor and dynamically adjusts the preload. The spring compression can be adjusted via a micro stepper motor. The sliding connection allows the sensing component 3 to move freely with the thermal expansion and contraction of the three steel components (compensation for differences in linear expansion coefficients), avoiding sensor failure or housing cracking caused by stress concentration in traditional fixed connections.

[0030] In some embodiments, the housing 2 is a telescopic structure. The housing 2 consists of two layers of high-temperature resistant stainless steel sleeves, with the inner sleeve capable of axial sliding within the outer sleeve. An alumina ceramic guide rail is positioned between the inner and outer sleeves, its surface coated with a molybdenum disulfide lubricating layer (temperature resistance ≥1000℃) to reduce frictional resistance. The sleeve connection uses a silicone rubber sealing ring (temperature resistance ≥200℃) in conjunction with a metal pressure ring, achieving dynamic sealing by compressing the sealing ring with pre-tightening bolts. An electromagnetic lock or spring clip is provided at the end of the outer sleeve to lock the telescopic position as needed. A built-in micro stepper motor drives the inner sleeve's telescopic movement. The motor monitors the ambient temperature in real time via a temperature sensor and dynamically adjusts the telescopic amount using a three-steel thermal expansion model (e.g., 0.5-1mm telescopic compensation for every 100℃ increase in temperature).

[0031] The housing 2 can also be made of high-temperature resistant nickel-based alloy bellows (temperature resistance ≥1200℃), rigidly connected to the base 1 and sensing component 3 at both ends via flanges. A ceramic fiber insulation layer is wrapped around the outside of the bellows to reduce heat conduction. The bellows itself has axial elastic deformation capability to compensate for displacement caused by thermal expansion and contraction of the three steel components (compensation range ±5mm). An integrated disc spring assembly inside the bellows provides a constant preload (5-10N) to ensure constant contact between the sensing component and the measured surface. The flanges at both ends of the bellows are sealed with metal bellows, combined with a nitrogen purging system (injecting dry nitrogen via a micro-pump) to prevent electrolyte vapor penetration. The telescopic structure can freely adjust its length according to the temperature changes of the three steel components (compensation range ±10mm), avoiding the limitations of traditional fixed housings due to differences in material expansion coefficients (e.g., the expansion coefficient of steel is approximately 12×10). -6 / ℃, ceramics approximately 3×10 -6 Stress concentration caused by ( / ℃) reduces the risk of shell cracking.

[0032] In some embodiments, an interface 101 is provided on the substrate 1; wherein, the interface 101 is used to connect external devices. A silicone rubber sealing ring (temperature resistance ≥200℃) can be nested on the outside of the interface 101, and thermally conductive silicone (such as Shin-Etsu KE-45) can be filled inside to prevent electrolyte penetration and assist in heat dissipation. A conductive coating (such as nickel-plated graphite) is sprayed inside the metal shell of the interface, and in conjunction with the Faraday cage structure, it attenuates strong magnetic field interference. It supports external debugging equipment to achieve rapid on-site diagnosis, shortening fault diagnosis time by more than 50%. It can be expanded to connect vibration sensors, stress gauges, and other devices to build a multi-parameter monitoring network.

[0033] In some embodiments, interface 101 is a USB interface. It employs an industrial-grade USB 2.0 / 3.0 interface (such as TE Connectivity's high-temperature resistant USB module), with a 316L stainless steel shell and gold-plated internal pins to enhance conductivity and corrosion resistance. The interface is surrounded by a double-layer silicone rubber sealing ring (temperature resistance ≥200℃), with the inner layer filled with thermally conductive silicone (such as Shin-Etsu KE-45), forming a double-sealed structure to prevent electrolyte penetration and aid in interface heat dissipation. The signal transmission line uses a double-shielded cable (inner shielding layer is aluminum foil, outer shielding layer is tin-plated copper braided mesh), reliably grounded to the USB interface's shielding layer, improving anti-interference performance. The USB interface allows for quick connection to laptops or dedicated debugging tools, enabling on-site parameter configuration, firmware upgrades, and fault diagnosis.

[0034] In some embodiments, refer to Figure 4It also includes a protective component 4, one side of which is connected to the base 1, and the other side of which is fastened to the base 1. The middle of the protective component 4 covers the interface 101. The protective component 4 can be made of high-temperature resistant stainless steel (such as 316L) or alumina ceramic material. It is fixedly connected to the base 1 by a hinge, and the other side is fastened by a high-temperature resistant silicone rubber clip or an electromagnetic lock. A silicone rubber sealing ring (temperature resistance ≥200℃) is embedded inside the flip cover. When closed, it fits tightly against the surface of the base 1 to form an IP67-level seal.

[0035] The protective component 4 can also be a sliding metal sleeve, which is slidably connected to the base 1 via an alumina ceramic guide rail. The surface of the guide rail is coated with a molybdenum disulfide lubricating layer. A spring latch is provided at the end of the sliding cover, which automatically locks after sliding into place. A silicone rubber sealing ring and a metal pressure ring are used between the sliding cover and the base 1 to achieve dynamic sealing.

[0036] The protective component 4 can also be a ring structure, rotatably connected to the base 1 via a high-temperature bearing, with the rotation angle covering the interface 101. The ring adopts a double-layer structure, with an inner layer of nickel-based alloy bellows (temperature resistance ≥1200℃) and an outer layer wrapped with a ceramic fiber heat insulation layer, which can compensate for thermal expansion and contraction displacement (±5mm). In some embodiments, the protective component 4 is provided with an interface protection element 401, the shape of which corresponds to the interface 101. Through the IP67-level sealing design, it effectively resists electrolyte splashing, dust contamination, and high-temperature steam erosion, extending the service life of the interface 101.

[0037] In some embodiments, the mounting part 103 is provided with mounting holes. The mounting holes adopt a symmetrical distribution design (e.g., four M8 bolt holes are evenly distributed at 90°), which is compatible with the standard mounting interfaces of the three steel components (steel claws, steel rods, and steel busbars) of the electrolytic cell. The hole spacing matches the reserved mounting holes of the three steel components (tolerance ±0.1mm) to ensure rapid positioning. The mounting holes have a stepped hole structure: the outer layer is a countersunk hole (3mm deep) to accommodate flat head bolts; the inner layer is a threaded hole (M8×1.25), and the thread surface is coated with a molybdenum disulfide coating (friction coefficient ≤0.1) to prevent high-temperature seizing. It is compatible with three fixing methods: welding, magnetic attraction, and bolts, and is especially suitable for the retrofitting of existing electrolytic cells (no welding required), improving installation efficiency by more than 70%.

[0038] In some embodiments, a display component is also included, which is connected to the signal transmission component 102. The display component can be a high-temperature resistant LCD display (such as Sharp LQ035Q7DG01, temperature range -20℃ to +85℃) or a micro LED dot matrix screen (such as CreeXHP35HI, temperature resistance ≥120℃), with the screen surface covered with sapphire glass (Mohs hardness 9) for scratch and high-temperature impact resistance. The connection between the display component and the substrate 1 uses a silicone rubber sealing ring (temperature resistance ≥200℃) in conjunction with a metal pressure ring, and the sealing ring is compressed by pre-tightening bolts to form IP67 protection. A ceramic fiber heat insulation layer is embedded at the screen edge to reduce heat conduction to the internal circuitry. A dedicated display driver chip (such as SSD1306) is integrated, supporting SPI or I2C interfaces for connection to the signal transmission component 102. The driver circuit adopts a multi-layer PCB design, with a Faraday shielding layer on the inner layer to resist strong magnetic field interference. The 8-channel temperature curve (resolution 0.1℃) can be directly viewed on a local screen, reducing the frequency of manual inspections and improving maintenance efficiency. The touch interface supports historical data querying and parameter setting, and the USB interface allows for on-site data export, shortening troubleshooting time. It also supports local screen and remote platform display, ensuring data monitoring continues even during network interruptions.

[0039] In some embodiments, the sensing component 3 is characterized by being a thermocouple. The thermocouple can be a patch structure. The substrate material can be a 0.5-1mm thick alumina ceramic substrate (Al2O3, purity ≥96%), which has high temperature resistance (1600℃) and good insulation (volume resistivity ≥10). 12 Low Ω·cm, low coefficient of thermal expansion (7.5×10⁻⁶). -6 / ℃), with steel (12×10 -6 The expansion difference (at / ℃) is small, reducing thermal stress. Thermally conductive silicone (such as Dow Corning TC-5022, thermal conductivity 5.0 W / (m·K)) is adhered to the back of the patch thermocouple, and it is then bonded to the surface of the sliding sensing component 3 of the housing 2 using high-temperature pressure-sensitive adhesive (3M 9485PC, temperature resistance 200℃). The patch structure has a small heat capacity (mass ≤0.5g) and a response time <1s, improving real-time performance compared to armored thermocouples (response time 5-10s).

Claims

1. An on-line monitoring device for the temperature of three steels of an electrolytic cell, characterized in that, include: The base (1), housing (2) and sensing component (3) are provided. The housing (2) is disposed on the base (1) and has an opening. The sensing component (3) is disposed at the opening. The base (1) is provided with a signal transmission component (102). The sensing component (3) is connected to the signal transmission component (102). The base (1) is provided with a mounting part (103). The mounting part (103) is used to connect the substrate (1) to the three steel plates of the electrolytic cell to be tested.

2. The on-line monitoring device for three steel temperature of electrolytic cell according to claim 1, characterized in that, The sensing component (3) is slidably connected to the housing (2).

3. The online temperature monitoring device for the three steel sections of the electrolytic cell as described in claim 2, characterized in that, The shell (2) is a telescopic structure.

4. The on-line monitoring device for three steel temperature of electrolytic cell according to claim 1, characterized in that, The substrate (1) is provided with an interface (101); wherein the interface (101) is used to connect to an external device.

5. The on-line monitoring device for the temperature of the three steels of the electrolytic cell according to claim 4, characterized in that, The interface (101) is a USB interface.

6. The on-line monitoring device for the temperature of the three steels of the electrolytic cell according to claim 4, characterized in that, It also includes a protective component (4), one side of which is connected to the base (1), the other side of which is fastened to the base (1), and the middle part of which covers the interface (101).

7. The on-line monitoring device for the temperature of the three steels of the electrolytic cell according to claim 6, characterized in that, The protective component (4) is provided with an interface protection element (401), the shape of which corresponds to the interface (101).

8. The online temperature monitoring device for the three steel sections of the electrolytic cell as described in claim 1, characterized in that, The mounting part (103) is provided with mounting holes.

9. The on-line monitoring device for three steel temperature of electrolytic cell according to claim 1, characterized in that, It also includes a display component, which is connected to the signal transmission component (102).

10. The on-line monitoring device for three-steel temperature of electrolytic cell according to any one of claims 1-9, characterized in that, The sensing component (3) is a thermocouple.

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