A magnetic field measuring device for high-temperature melts

Abstract

A magnetic field measuring device for high-temperature melts, relating to the field of high-temperature melt measurement technology, includes an outer sleeve assembly, an inner sleeve assembly, and a probe assembly. The outer sleeve assembly comprises an external sleeve body and an external sleeve connecting pipe, internally interconnected. The upper part of the outer sleeve body is detachably connected to the external sleeve connecting pipe, and the side of the external sleeve connecting pipe is connected to an exhaust branch pipe. The external sleeve connecting pipe is detachably connected to the inner sleeve assembly. The inner sleeve assembly comprises an internal sleeve body and an internal sleeve connecting pipe, internally interconnected, and the side of the internal sleeve connecting pipe is connected to an air inlet pipe. This invention achieves the purpose of cooling the magnetic field measuring probe by setting an inner sleeve assembly and an outer sleeve assembly outside the magnetic field measuring probe, through which compressed air for cooling flows, thereby enabling magnetic field measurement in a high-temperature melt environment.

Description

Technical Field

[0001] This invention relates to the field of high-temperature melt measurement technology, and in particular to a magnetic field measuring device for high-temperature melts. Background Technology

[0002] Molten salt electrolysis is one of the main methods for producing liquid metals in industry. In electrolysis, the melt distribution in the electrolytic cell generally consists of an electrolyte layer and a molten metal layer (which can be one or more layers). For example, in actual aluminum electrolysis production, the temperature of the electrolyte layer and the molten metal layer is approximately 950℃; in the production of three-layer high-purity aluminum, the temperature of the electrolyte layer and the molten metal layer is approximately 770℃.

[0003] In the electrolytic aluminum industry, electrolytic cells in the electrolytic series undergo chemical reactions under the influence of direct current to produce primary aluminum products. The current in the electrolytic series ranges from 80kA to 800kA. During production, the direct current generates a large static magnetic field, which significantly affects the fluid flow in the molten zone within the electrolytic cell. The magnetic field exerts its influence on aluminum electrolysis by affecting the magnetohydrodynamic flow within the cell and the deformation of the electrolyte-aluminum liquid interface. Specifically, it affects the stability of the electrode spacing during the electrolytic cell production process, thereby influencing the stability of the cell operation and the current efficiency of the electrolysis process. A good magnetic field distribution enables the electrolytic cell to achieve good magnetohydrodynamic stability during production, which significantly improves the current efficiency during electrolysis and extends the life of the cell lining. In the three-layer high-purity aluminum industry, the magnetic field distribution in the molten zone also has a significant impact on the production process.

[0004] Therefore, during the production process of an electrolytic cell, it is necessary to intermittently or in real time measure the magnetic field in the high-temperature melt zone of the electrolytic cell in order to achieve the purpose of scientific research or understanding the actual production.

[0005] During the electrolytic cell production process, it is difficult to directly test the magnetic field or other physical parameters of the melt region using a test probe under such high temperatures. Generally, the temperature resistance of magnetic field test probes or other test probes is ≤60℃. Therefore, finding a reasonable continuous cooling method and designing a suitable testing device are necessary to achieve continuous or intermittent acquisition of physical parameters within the electrolytic cell. Summary of the Invention

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a magnetic field measuring device for high-temperature melts. By setting an inner sleeve assembly and an outer sleeve assembly outside the magnetic field measuring probe, compressed air for cooling flows through the inner and outer sleeve assemblies to achieve the purpose of cooling the magnetic field measuring probe, thereby realizing magnetic field measurement in a high-temperature melt environment.

[0007] To achieve the above objectives, the main technical solutions adopted by the present invention include: A magnetic field measuring device for high-temperature melts includes an outer sleeve assembly, an inner sleeve assembly, and a probe assembly. The outer sleeve assembly includes an outer sleeve body and an outer sleeve connecting pipe that are internally interconnected. The bottom of the outer sleeve body is sealed, and its upper part is detachably connected to the outer sleeve connecting pipe. The side of the outer sleeve connecting pipe is connected to an exhaust branch pipe, and the outer sleeve connecting pipe is detachably connected to the inner sleeve assembly. The inner sleeve assembly includes an inner sleeve body and an inner sleeve connecting pipe that are internally interconnected. The bottom of the inner sleeve body has an air outlet, and its upper part is fixedly connected to the inner sleeve connecting pipe. The inner sleeve connecting pipe is detachably connected to the outer sleeve connecting pipe, and its side is connected to an air inlet pipe. The top of the inner sleeve connecting pipe has a test probe mounting groove, and the outer wall of the test probe mounting groove is sealed to the inner sleeve connecting pipe. The bottom of the test probe mounting groove has a test probe through hole. After the magnetic field test probe is installed in the test probe mounting groove, the test probe mounting groove and the test probe through hole are sealed.

[0008] Furthermore, the outer sleeve connecting pipe is provided with a handle on its side.

[0009] Furthermore, a pipe muffler is provided on the exhaust branch pipe.

[0010] Furthermore, the external sleeve connecting pipe is connected to the exhaust branch pipe via a union joint.

[0011] Furthermore, a ball valve is provided on the intake pipe.

[0012] Furthermore, the side of the internal sleeve connecting pipe is connected to the air intake pipe via the air intake pipe connecting pipe and quick-connect fitting.

[0013] Furthermore, the magnetic field test probe is fitted with a probe mounting tube, and a probe seal is provided below the probe mounting tube. The probe mounting tube is used for detachable connection with the test probe mounting slot, and the probe seal is used for sealing after the magnetic field test probe is installed in the test probe mounting slot.

[0014] Furthermore, the shape of the test probe mounting groove matches the combined shape of the probe mounting tube and the probe seal.

[0015] Furthermore, the magnetic field measuring device supplies compressed air for cooling to the inner sleeve assembly through the air inlet pipe, which then flows through the air outlet at the bottom of the inner sleeve assembly, passes through the outer sleeve assembly, and is discharged through the exhaust branch pipe.

[0016] The beneficial effects of the invention are: 1. This invention uses a sleeve insulation device and compressed air as a cooling medium to continuously cool the test probe, which can realize continuous measurement of physical parameters such as magnetic field in the high-temperature melt region.

[0017] 2. The sleeve insulation device of the present invention has good detachability, light weight, and some parts are made of aluminum alloy. The main parts can be replaced.

[0018] 3. The sleeve insulation device of the present invention is non-magnetic and can be unaffected by magnetic fields in high current and strong magnetic field environments. The method of use is simple and convenient. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the external sleeve assembly structure of the present invention; Figure 2 This is a schematic diagram of the internal sleeve assembly structure of the present invention; Figure 3 This is a schematic diagram of the test probe assembly structure of the present invention; Figure 4 This is a schematic diagram of the assembled magnetic field measuring device.

[0020] In the diagram: 1 is the outer sleeve body, 2 is the outer sleeve connecting pipe, 3 is the union joint, 4 is the bend, 5 is the pipeline silencer, 6 is the handle, 7 is the exhaust branch pipe, 8 is the inner sleeve body, 9 is the inner sleeve connecting pipe, 10 is the ball valve, 11 is the quick-connect coupling, 12 is the intake pipeline connecting pipe, 13 is the probe mounting pipe, 14 is the probe seal, and 15 is the magnetic field test probe. Detailed Implementation

[0021] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] like Figures 1-4 As shown, this invention provides a magnetic field measuring device for high-temperature melts, including an outer sleeve assembly, an inner sleeve assembly, and a probe assembly. The outer sleeve assembly includes an outer sleeve body 1 and an outer sleeve connecting pipe 2 that are internally interconnected. Both the outer sleeve body 1 and the outer sleeve connecting pipe 2 can be made of austenitic stainless steel, which is corrosion-resistant and high-temperature resistant. The diameter of the outer sleeve connecting pipe 2 is larger than the diameter of the outer sleeve body 1. The bottom of the outer sleeve body 1 is sealed, specifically with a blind flange. The upper part of the outer sleeve body 1 is detachably connected to the outer sleeve connecting pipe 2. Specifically, the upper outer side of the outer sleeve body 1 is threaded, and the lower part of the outer sleeve connecting pipe 2 is threaded. The two can be connected by threads. To prevent air leakage, the connection point can be sealed, such as by adding a sealing gasket at the connection point.

[0023] The outer sleeve connecting pipe 2 is connected to the exhaust branch pipe on its side. Specifically, the outer sleeve connecting pipe 2 is connected to the exhaust branch pipe 7 via a union 3. The exhaust branch pipe 7 can be an austenitic stainless steel pipe. The bend in the exhaust branch pipe 7 can be connected via a bend 4. A pipe silencer 5 can be installed on the exhaust branch pipe 7 to eliminate noise during equipment operation. The exhaust branch pipe can be easily installed and removed via the union 3. More specifically, the outer sleeve connecting pipe 2 is provided with a handle 6 on its side for easy installation and removal.

[0024] The outer sleeve connecting pipe 2 is detachably connected to the inner sleeve assembly. The inner sleeve assembly includes an internally interconnected inner sleeve body 8 and an inner sleeve connecting pipe 9. Both the inner sleeve body 8 and the inner sleeve connecting pipe 9 can be made of aluminum alloy, which facilitates heat conduction and reduces weight. The diameter of the inner sleeve body 8 is smaller than the diameter of the inner sleeve connecting pipe 9. The bottom of the inner sleeve body 8 has an air vent, and its upper part is fixedly connected to the inner sleeve connecting pipe 9, specifically by welding, to ensure a leak-proof seal at the joint between the inner sleeve body 8 and the inner sleeve connecting pipe 9. The inner sleeve connecting pipe 9 is detachably connected to the outer sleeve connecting pipe 2, specifically by a threaded connection. For example, threads can be provided on the lower outer side of the inner sleeve connecting pipe 9 and on the upper inner side of the outer sleeve connecting pipe 2, creating a threaded connection. To prevent leakage, the connection point can be sealed, such as by adding a sealing gasket.

[0025] The side of the internal sleeve connecting pipe 9 is connected to the air intake pipe. Specifically, the air intake pipe is equipped with a ball valve 10. The side of the internal sleeve connecting pipe 9 is connected to the air intake pipe through the air intake pipe connecting pipe 12 and the quick-connect coupling 11. The ball valve 10 can be set between the air intake pipe connecting pipe 12 and the quick-connect coupling 11. It is connected to the air intake pipe through the quick-connect coupling 11, which can achieve the purpose of quick loading and unloading.

[0026] The top of the inner sleeve connecting tube 9 is provided with a test probe mounting groove. The outer wall of the test probe mounting groove is sealed with the inner sleeve connecting tube 9. It can also be integrally formed. The bottom of the test probe mounting groove is provided with a test probe through hole for installing a magnetic field test probe 15. After the magnetic field test probe 15 passes through the test probe through hole at the bottom of the test probe mounting groove and is installed in the test probe mounting groove, the test probe mounting groove and the test probe through hole are sealed.

[0027] Specifically, the magnetic field test probe 15 is externally fitted with a probe mounting tube 13, and a probe seal 14 is located below the probe mounting tube 13. The probe mounting tube 13 is used for detachable connection with the test probe mounting slot, and the probe mounting tube 13 and the test probe mounting slot can be connected by threads. The probe seal 14 is used to seal the magnetic field test probe 15 after it is installed in the test probe mounting slot. The probe mounting tube 13 and the probe seal 14 can be fixedly connected by chemical adhesive, or they can be left unconnected. The probe mounting tube 13 and the probe seal 14 have an opening in the middle for installing the magnetic field test probe 15. The magnetic field test probe 15 passes through the probe mounting tube 13 and the probe seal 14 and is then sealed. The shape of the test probe mounting slot matches the combined shape of the probe mounting tube 13 and the probe seal 14.

[0028] In use, the intake pipe is connected via quick connector 11. The intake air is compressed air used for cooling. Compressed air is supplied to the internal sleeve assembly through the intake pipe. The intake volume is controlled by ball valve 10. The compressed air enters the internal sleeve body 8 through the internal sleeve connecting pipe 9, carrying away the heat around the magnetic field test probe 15 placed inside the internal sleeve connecting pipe 9 and the internal sleeve body 8, thus achieving cooling. Then, it flows through the air outlet at the bottom of the internal sleeve body 8, through the external sleeve body 1 of the external sleeve assembly, and finally through the external sleeve connecting pipe 2, and is discharged through the exhaust branch pipe. The pipeline silencer 5 can significantly reduce noise pollution from the warm compressed air, thereby ensuring on-site communication and operational safety for operators.

[0029] The temperature of the high-temperature melt in the electrolytic cell is close to 950°C. The sleeve insulation device of the present invention uses compressed air as a cooling medium. The magnetic field test probe is placed inside the sleeve insulation device, and the magnetic field test probe is continuously cooled by compressed air. This allows for intermittent or continuous measurement of the magnetic field or other physical parameters of the high-temperature melt.

[0030] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any modifications, alterations, substitutions, and variations made by those skilled in the art to the above embodiments are within the scope of the present invention.

Claims

1. A magnetic field measuring device for high-temperature melts, characterized in that: The system includes an external sleeve assembly, an internal sleeve assembly, and a probe assembly. The external sleeve assembly includes an external sleeve body (1) and an external sleeve connecting pipe (2) that are internally interconnected. The bottom of the external sleeve body (1) is sealed, and its upper part is detachably connected to the external sleeve connecting pipe (2). The side of the external sleeve connecting pipe (2) is connected to an exhaust branch pipe. The external sleeve connecting pipe (2) is detachably connected to the internal sleeve assembly. The internal sleeve assembly includes an internal sleeve body (8) and an internal sleeve connecting pipe (9) that are internally interconnected. The bottom of the internal sleeve body (8) is sealed. The part has an air outlet, and its upper part is fixedly connected to the inner sleeve connecting pipe (9). The inner sleeve connecting pipe (9) is detachably connected to the outer sleeve connecting pipe (2). The side of the inner sleeve connecting pipe (9) is connected to the air inlet pipe. The top of the inner sleeve connecting pipe (9) is provided with a test probe mounting groove. The outer wall of the test probe mounting groove is sealed with the inner sleeve connecting pipe (9). The bottom of the test probe mounting groove is provided with a test probe through hole. After the magnetic field test probe (15) is installed in the test probe mounting groove, the test probe mounting groove and the test probe through hole are sealed.

2. The magnetic field measuring device for high-temperature melts according to claim 1, characterized in that: The outer sleeve connecting pipe (2) is provided with a handle (6) on its side.

3. The magnetic field measuring device for high-temperature melts according to claim 1, characterized in that: The exhaust branch pipe is equipped with a pipe muffler (5).

4. A magnetic field measuring device for high-temperature melts according to claim 1 or 3, characterized in that: The external sleeve connecting pipe (2) is connected to the exhaust branch pipe via a union (3).

5. The magnetic field measuring device for high-temperature melts according to claim 1, characterized in that: A ball valve (10) is provided on the intake pipe.

6. A magnetic field measuring device for high-temperature melts according to claim 1 or 5, characterized in that: The side of the internal sleeve connecting pipe (9) is connected to the air intake pipe through the air intake pipe connecting pipe (12) and quick-change connector (11).

7. A magnetic field measuring device for high-temperature melts according to claim 1, characterized in that: The magnetic field test probe (15) is fitted with a probe mounting tube (13) on the outside. A probe seal (14) is provided below the probe mounting tube (13). The probe mounting tube (13) is used to connect and disconnect with the test probe mounting slot. The probe seal (14) is used to seal the magnetic field test probe (15) after it is installed in the test probe mounting slot.

8. A magnetic field measuring device for high-temperature melts according to claim 1 or 7, characterized in that: The shape of the test probe mounting groove matches the combined shape of the probe mounting tube (13) and the probe seal (14).

9. A magnetic field measuring device for high-temperature melts according to claim 1, characterized in that: The magnetic field measuring device supplies compressed air for cooling to the inner sleeve assembly through the air inlet pipe, which then flows through the air outlet at the bottom of the inner sleeve assembly, through the outer sleeve assembly, and is discharged through the exhaust branch pipe.

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