A magnetic dustproof aluminum electrolytic cell leak-proof furnace temperature monitoring device

Abstract

This utility model discloses a magnetic dustproof aluminum electrolytic cell leak-proof furnace temperature monitoring device, including a base, a cover plate, a high-temperature resistant magnet, a temperature sensor, and a mechanical temperature control switch. The base has an internal groove, with a magnet placement slot and a switch limiting through hole on the bottom plate of the groove. The high-temperature resistant magnet is placed in the magnet placement slot, and the mechanical temperature control switch is placed in the switch limiting through hole. The cover plate covers the opening of the groove, and the cover plate and the bottom plate of the groove are bolted together. One side of the cover plate has an open cavity to accommodate the mechanical temperature control switch, and grooves extending to both ends of the cover plate are provided on both sides of the open cavity. A connecting groove is provided on the end face of the groove on the base. The temperature sensor is located on the other side of the cover plate. This utility model can withstand harsh environments with high temperature and high magnetic field. It adopts a modular unit design, which allows for quick replacement of the acquisition unit in subsequent maintenance, thereby reducing later maintenance time.

Description

Technical Field

[0001] This utility model relates to the field of aluminum electrolysis technology, specifically to a magnetic dustproof aluminum electrolysis cell leak-proof furnace temperature monitoring device. Background Technology

[0002] Aluminum electrolysis products are widely used in aerospace, transportation, and many other fields, supporting the continued development of related key industries, and the industry as a whole shows a good development trend. However, in the aluminum electrolysis production process, due to its high-temperature molten salt electrolysis, a high-intensity DC current ranging from 400 to 600 kA is required. This results in a strong magnetic field in the electrolysis workshop, and the high current can easily cause phenomena such as aluminum rolling and high-intensity electric arcs in the electrolytic cells. Under these special conditions, the internal materials of the electrolytic cells are easily damaged. When the damage reaches a certain level, molten aluminum will leak from the side or bottom, causing furnace leakage and affecting production safety. To predict the occurrence of production accidents such as furnace leakage in advance, effective monitoring of furnace leakage in electrolytic cells is crucial, but the industry currently faces significant detection difficulties. Traditionally, to avoid furnace leakage, manual inspection is usually used, where workers use temperature measuring tools to measure the temperature at single points. However, due to the large number of temperature measuring points and the harsh environment of high temperature and high magnetic fields, this has become one of the most challenging tasks for aluminum electrolysis plants.

[0003] The existing temperature measurement method uses a resistance temperature detector (patent application number: CN202320913312.6), which mainly involves placing a platinum resistance thermometer inside an outer protective tube with an integrated connection structure. The outer protective tube includes a straight section and a curved section, with the curved section sealing the port of the straight section. An insulating powder layer is filled between the platinum resistance thermometer and the outer protective tube to achieve insulation. A winding layer is wrapped around the outer wall of the metal lead to enhance the connection strength. The metal lead is flexibly fixed at the open end of the outer protective tube by a clamping component (including an arc plate, connecting rod, elastic element, etc.). This method aims to solve the problems of low bending strength and easy breakage of traditional segmented welded protective sleeves and is suitable for scenarios such as ground temperature detection. However, there are significant limitations when applying such armored platinum resistance temperature detectors to the electrolytic aluminum industry: First, the electrolytic aluminum production environment is characterized by strong electromagnetic fields (>500 Gs), high temperatures (>250 ℃), and a large amount of dust and debris. Although the platinum resistance temperature detector has an overall outer protective tube, it is still susceptible to strong electromagnetic interference, which affects the measurement accuracy and makes it unable to stably cope with the extreme electromagnetic environment of the electrolytic cell. Second, its fixing method relies on mechanical clamping, which is difficult to adapt to the installation requirements of the exposed cathode steel rod of the electrolytic cell. The disassembly and assembly process is complicated, and maintenance requires downtime, which can easily cause production losses. Third, no anti-magnetization components are designed for high magnetic environments, which may affect the detector performance due to magnetization and adsorption of iron filings. Furthermore, the problem of accuracy degradation caused by the displacement of the temperature measuring element during long-term use has not been solved. Utility Model Content

[0004] The purpose of this invention is to provide a magnetic dustproof aluminum electrolytic cell leak-proof furnace temperature monitoring device to solve the problems existing in the background technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a magnetic dustproof aluminum electrolytic cell leak-proof furnace temperature monitoring device, comprising a base, a cover plate, a high-temperature resistant magnet, a temperature sensor, and a mechanical temperature control switch. The base has an internal groove, with a magnet placement groove and a switch limiting through hole on the bottom plate of the groove. The high-temperature resistant magnet is placed in the magnet placement groove, and the mechanical temperature control switch is located inside. The cover plate covers the opening of the groove, and the cover plate and the bottom plate of the groove are bolted together. One side of the cover plate has an opening cavity to accommodate the mechanical temperature control switch. Grooves extending to both ends of the cover plate are provided on both sides of the opening cavity. A connecting groove is provided on the end face corresponding to the groove of the base. The temperature sensor is located on the other side of the cover plate. The mechanical temperature control switch is electrically connected to the temperature sensor through the connecting grooves on both sides. A high-temperature wire is provided at the other end of the mechanical temperature control switch.

[0006] Preferably, two magnet placement slots are provided, which are symmetrically arranged on both sides of the switch limiting through hole.

[0007] Preferably, the switch limiting through hole is provided with fixing threaded holes on both sides.

[0008] Preferably, the bolt is a high-temperature resistant bolt.

[0009] Preferably, the high-temperature resistant magnet is a high-temperature samarium cobalt magnet.

[0010] Compared with existing technologies, this invention places a high-temperature resistant magnet and a mechanical temperature control switch in the groove of the base. Teflon tape is used to fix the high-temperature resistant magnet in the magnet placement groove, and bolts are used to fix the mechanical temperature control switch in the switch limiting through hole. A cover plate is used to seal the opening of the base groove. The high-temperature resistant magnet and the mechanical temperature control switch are located inside the base and are fixed by their magnetism. The cover plate has a cavity, which further fixes the high-temperature resistant magnet, achieving double fixing and limiting. This ensures that the position remains unchanged after long-term use and that the temperature measurement accuracy remains stable, preventing high-temperature short circuits caused by filling methods. The temperature sensor can withstand harsh environments with high temperatures and high magnetic fields. This invention adopts a modular unit design, enabling rapid replacement during subsequent maintenance, thereby reducing later maintenance time. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the base structure of this utility model.

[0012] Figure 2 This utility model Figure 1 AA view.

[0013] Figure 3 This utility model Figure 1 BB view.

[0014] Figure 4 This is a schematic diagram of the cover plate structure of this utility model.

[0015] Figure 5 This utility model Figure 4 The CC view.

[0016] Figure 6 This utility model Figure 4 Top view. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-6 This utility model discloses a magnetic dustproof aluminum electrolytic cell leak-proof furnace temperature monitoring device, comprising a base 1, a cover plate 4, a high-temperature resistant magnet, a temperature sensor, and a mechanical temperature control switch. The base 1 has an internal groove with an opening that communicates with the outside. The bottom plate of the groove has a magnet placement groove 2 and a switch limiting through hole 3. The high-temperature resistant magnet is placed in the magnet placement groove 2, and the mechanical temperature control switch is placed in the switch limiting through hole 3. The cover plate 4 covers the opening of the groove and is bolted to the bottom plate of the groove. One side of the cover plate 4 has an opening cavity to accommodate the mechanical temperature control switch. The two sides of the opening cavity have grooves extending to both ends of the cover plate 4. The end face of the groove of the base 1 has a connecting groove. The temperature sensor is located on the other side of the cover plate. The mechanical temperature control switch is electrically connected to the temperature sensor through the connecting grooves on both sides. The other end of the mechanical temperature control switch has a high-temperature wire.

[0019] In a specific implementation of this utility model, two magnet placement slots 2 are provided, symmetrically arranged on both sides of the switch limiting through hole 3. Fixed threaded holes are provided on both sides of the switch limiting through hole 3 for fixing the mechanical temperature control switch. The bolts are high-temperature resistant bolts, and the magnets are high-temperature resistant samarium cobalt magnets.

[0020] In this specific implementation, two magnet placement slots 2 are provided, symmetrically arranged on both sides of the switch placement through hole 3. Fixed threaded holes are provided on both sides of the switch placement through hole 3, allowing the mechanical temperature control switch to be fixed to the groove base plate using screws. One side of the cover plate 4 has an open cavity to accommodate the mechanical temperature control switch. Grooves extending to both ends of the cover plate 4 are provided on both sides of the open cavity. A connecting groove is provided on the end face corresponding to the base groove. The size of the cover plate 4 is slightly smaller than the size of the grooves, allowing the cover plate 4 to descend. The two ends of the cover plate 4 press against the high-temperature resistant magnets. The connecting bolts between the cover plate 4 and the groove base plate are high-temperature resistant bolts. The high-temperature resistant magnets are samarium cobalt magnets.

[0021] In use, a high-temperature resistant samarium cobalt magnet is placed in the magnet placement slot and fixed with Teflon tape. The mechanical temperature control switch is installed in the switch placement through hole, and the cover plate is closed. The mechanical temperature control switch is placed in the groove of the base. The temperature sensor is located on the other side of the cover plate, outside the groove of the base. The mechanical temperature control switch is inside the cavity and is electrically connected to the temperature sensor through the connecting slots on both sides. After installation, the device is magnetically attached to the collection point. The temperature sensor collects the temperature, but if the temperature exceeds the set threshold value, the mechanical temperature control switch disconnects and the signal is transmitted back through the high-temperature wire.

[0022] Finally, it should be noted that the above-described embodiments are merely specific implementations of this utility model, used to illustrate the technical solution of this utility model, and not to limit it. The protection scope of this utility model is not limited thereto. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this utility model. These modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A magnetic dustproof aluminum electrolytic cell and leak-proof furnace temperature monitoring device, characterized in that: The device includes a base, a cover plate, a high-temperature resistant magnet, a temperature sensor, and a mechanical temperature control switch. The base has an internal groove, with a magnet placement slot and a switch limiting through hole on the bottom plate of the groove. The high-temperature resistant magnet is placed in the magnet placement slot, and the mechanical temperature control switch is placed in the switch limiting through hole. The cover plate covers the opening of the groove and is bolted to the bottom plate of the groove. One side of the cover plate has an open cavity to accommodate the mechanical temperature control switch. Grooves extending to both ends of the cover plate are provided on both sides of the open cavity. A connecting groove is provided on the end face of the groove on the base. The temperature sensor is located on the other side of the cover plate. The mechanical temperature control switch is electrically connected to the temperature sensor through the connecting grooves on both sides. A high-temperature wire is provided at the other end of the mechanical temperature control switch.

2. The magnetic dustproof aluminum electrolytic cell leak-proof furnace temperature monitoring device according to claim 1, characterized in that: Two magnet placement slots are provided, symmetrically located on both sides of the switch limit through hole.

3. The magnetic dustproof aluminum electrolytic cell leak-proof furnace temperature monitoring device according to claim 1, characterized in that: The switch limit through hole is provided with fixing threaded holes on both sides.

4. The magnetic dustproof aluminum electrolytic cell leak-proof furnace temperature monitoring device according to claim 1, characterized in that: The bolts mentioned are high-temperature resistant bolts.

5. The magnetic dustproof aluminum electrolytic cell leak-proof furnace temperature monitoring device according to claim 1, characterized in that: The aforementioned high-temperature resistant magnet is a high-temperature resistant samarium cobalt magnet.

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