Dynamic argon protection temperature measuring device capable of resisting flue gas interference

Abstract

The utility model relates to the technical field of metal smelting temperature measurement, in particular to a dynamic argon protection temperature measuring device capable of resisting smoke interference. The device comprises an argon tank, an air pump, a hose, a gas pipeline, an infrared thermometer, an electric sliding rail, an upper computer, a range radar and a reaction furnace. The gas pump is connected with the argon tank and the hose, the hose is in butt joint with the gas pipeline, the gas pipeline is installed on the electric sliding rail sliding block and extends to the corresponding liquid metal liquid level in the furnace, the infrared thermometer is fixed to the upper end of the gas pipeline, and the detection end of the infrared thermometer faces the liquid level. The upper computer is in signal connection with the range radar, the electric sliding rail and the infrared thermometer. The distance measuring radar monitors the distance between the liquid level and the temperature measuring point in real time and uploads data, the upper computer drives the electric sliding rail through closed-loop control, and the argon purging point is maintained 10-20 cm above the liquid level. The hose ensures that a gas path is smooth during movement, argon clears away smoke in a temperature measurement light path, temperature measurement precision and liquid level fluctuation adaptability are both considered, and the device is suitable for metal smelting reaction temperature measurement scenes.

Description

A dynamic argon gas protection temperature measurement device resistant to flue gas interference Technical Field

[0001] This utility model relates to the field of temperature measurement technology in metal smelting, and in particular to a dynamic argon gas protection temperature measurement device that resists flue gas interference. Background Technology

[0002] In the smelting of reactive metals such as magnesium and lithium, a protective atmosphere is usually required to prevent violent reactions between the molten metal and air. This reaction generates a large amount of fumes, which not only affect the working environment but also severely interfere with the measurement results of non-contact temperature measuring equipment such as infrared thermometers, leading to distorted temperature data and consequently affecting the precise control of the process.

[0003] The common practice is to introduce inert gases such as argon for protection. However, argon purge tubes in fixed positions are difficult to adapt to fluctuations in the liquid level, resulting in incomplete removal of localized flue gas and compromising temperature measurement accuracy. Therefore, there is an urgent need for a temperature measuring device that can dynamically follow the liquid level and effectively eliminate flue gas interference. Summary of the Invention

[0004] In view of this, the present invention provides a dynamic argon gas protection temperature measurement device that resists flue gas interference.

[0005] Therefore, the present invention provides the following technical solution:

[0006] A dynamic argon gas protection temperature measurement device resistant to flue gas interference includes an argon gas tank, a gas pump, a hose, a gas pipeline, an infrared thermometer, an electric slide rail, a host computer, a ranging radar, and a reaction furnace.

[0007] The gas pump's inlet is connected to an argon cylinder, the gas pump's outlet is connected to one end of a hose, and the other end of the hose is connected to a gas pipeline; the electric slide rail is vertically installed on the reactor, the gas pipeline is vertically installed on the slider of the electric slide rail, and the gas pipeline's outlet extends into the reactor, corresponding to the liquid level of the liquid metal inside the furnace.

[0008] The infrared thermometer is installed at the upper end of the gas pipeline, with its detection end facing the liquid metal surface inside the reactor; the ranging radar is installed on the reactor, with its ranging end facing the liquid metal surface inside the reactor; the host computer is connected to the ranging radar, the electric slide rail, and the infrared thermometer.

[0009] Furthermore, it also includes a valve installed in the air passage between the air pump and the hose.

[0010] Furthermore, it also includes a flue gas treatment duct, which is located at the top of the reactor.

[0011] Furthermore, it also includes a ranging pipe, which is vertically installed on the reactor, and a ranging radar is fixedly installed on the ranging pipe, with the ranging end of the ranging radar vertically facing the liquid surface of the liquid metal.

[0012] Furthermore, the distance between the gas outlet end of the gas pipe and the liquid metal surface inside the reactor is 10-20 cm.

[0013] Furthermore, the ranging radar is a millimeter-wave radar.

[0014] Furthermore, the infrared thermometer is fixed to the upper side wall of the gas pipeline by a rigid mounting bracket, and its detection optical path is parallel to the axis of the gas pipeline so that the argon purging path coincides with the temperature measurement optical path.

[0015] Advantages and positive effects of this utility model:

[0016] The distance between the liquid surface and the temperature measuring point is monitored in real time by a ranging radar, and the data is uploaded to a host computer. The host computer analyzes this distance data and controls the motor of the electric slide rail, causing the infrared thermometer and gas pipeline to move up and down as a whole. Through this closed-loop feedback control, the argon gas purging point can always be maintained within the optimal range of 10-20 cm above the liquid surface.

[0017] This design maximizes the efficiency of using argon gas to blow away interfering fumes from the infrared thermometer's optical path, creating a clear and stable measurement environment and ensuring measurement accuracy. It also accommodates normal fluctuations in the liquid level during production. The flexible hose in the middle ensures unobstructed airflow during operation.

[0018] This invention features a clever structure and a high degree of automation, fundamentally solving the problem of inaccurate temperature measurement caused by flue gas interference during the high-temperature active metal smelting process. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 is a structural schematic diagram of a dynamic argon gas protection temperature measuring device that resists flue gas interference provided by this utility model.

[0021] Figure 2 is a perspective structural diagram of a dynamic argon gas protection temperature measuring device for resisting flue gas interference provided by this utility model.

[0022] In the diagram: 1. Argon cylinder; 2. Gas pump; 3. Valve; 4. Hoses; 5. Infrared thermometer; 6. Electric slide rail; 7. Host computer; 8. Ranging radar; 9. Flue gas treatment pipeline; 10. Reactor; 11. Liquid metal; 12. Gas pipeline; 13. Ranging pipeline. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 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.

[0024] This utility model provides a dynamic argon gas protection temperature measurement device that resists flue gas interference, as shown in Figures 1-2, including an argon gas tank 1, a gas pump 2, a hose 4, a gas pipeline 12, an infrared thermometer 5, an electric slide rail 6, a host computer 7, a ranging radar 8, and a reaction furnace 10.

[0025] The air pump 2 is connected to the argon tank 1 at the inlet end and to one end of the hose 4 at the outlet end. A valve 3 is installed in the air passage between the air pump 2 and the hose 4. The other end of the hose 4 is connected to the gas pipeline 12. The flexibility of the hose 4 ensures the continuity and stability of argon delivery when the electric slide rail 6 drives the gas pipeline 12 to move up and down.

[0026] The electric slide rail 6 is vertically installed on the reactor 10, and the gas pipe 12 is vertically installed on the slider of the electric slide rail 6. The gas outlet of the gas pipe 12 extends into the reactor 10, corresponding to the liquid level of the liquid metal 11 inside the furnace.

[0027] The infrared thermometer 5 is mounted on the upper side wall of the gas pipeline 12 via a rigid mounting bracket. Its detection end faces the liquid surface of the liquid metal 11 in the reactor, and its detection optical path is parallel to the axis of the gas pipeline so that the argon gas purging path coincides with the temperature measurement optical path, and is used to measure the temperature of the liquid surface of the liquid metal 11.

[0028] It also includes a ranging pipe 13, which is vertically installed on the reactor 10 and connected to the inside of the reactor 10. The ranging radar 8 is fixedly installed on the ranging pipe 13, and the ranging end of the ranging radar 8 is vertically facing the liquid surface of the liquid metal 11. The ranging signal emitted by the ranging radar 8 reaches the liquid surface inside the reactor 10 through the ranging pipe 13. The ranging radar 8 can be a millimeter-wave radar. Based on the principle of electromagnetic wave reflection, it can measure the distance between the liquid surface and the reactor lid in real time, and then calculate the distance between the detection end of the infrared thermometer 5 and the liquid metal surface based on the stepping amount of the electric slide rail.

[0029] The host computer 7 (such as an industrial computer or PLC) is connected to the ranging radar 8, the electric slide rail 6, and the infrared thermometer 5 via signal connections. The host computer 7 receives signals from the ranging radar 8 via a data cable. The host computer 7 also communicates wirelessly with the control module of the electric slide rail 6 via Bluetooth, enabling remote control and improving operational safety and convenience. The host computer 7 receives real-time distance signals from the ranging radar 8 and, based on these signals, drives the infrared thermometer 5 and the gas pipeline 12 to move synchronously up and down via the electric slide rail 6, thereby dynamically adjusting the relative position between the argon outlet of the gas pipeline 12 and the liquid surface.

[0030] The host computer 7 has a preset control logic that aims to keep the distance between the gas outlet of the gas pipe 12 and the liquid metal 11 in the reactor 10 at 10-20cm. At this distance, the argon gas flow can effectively disperse the flue gas above the liquid surface without causing severe disturbance to the liquid surface.

[0031] It also includes a flue gas treatment pipe 9, which is located at the top of the reactor 10 and is used to discharge the flue gas generated by the reaction.

[0032] Working principle:

[0033] During operation, gas pump 2 continuously pumps argon gas from argon tank 1 into reactor 10, creating a localized protective atmosphere in the temperature measurement area. The flue gas generated by the reaction is discharged from the flue gas treatment pipe 9 at the top.

[0034] The host computer 7 continuously receives distance data from the ranging radar 8. The host computer 7 has a preset control program whose objective is to maintain the distance between the argon outlet of the gas pipe 12 and the surface of the liquid metal 11 at 10-20 cm. When the liquid level rises, causing the actual distance to fall below the set lower limit (e.g., 10 cm), the host computer 7 sends a command to the electric slide rail 6, driving the slider to move the infrared thermometer 5 and the gas pipe 12 upwards together until the distance returns to the set range; conversely, when the liquid level falls, it controls the slide rail to move downwards. This forms a dynamic closed-loop control.

[0035] Throughout the process, argon gas is continuously blown in, forming a relatively smoke-free, transparent channel along the detection path of the infrared thermometer 5, while the fumes are simultaneously drawn away from the top fume treatment pipe 9. The flexible hose 4 ensures that the gas path is unaffected when the slider moves. Ultimately, the infrared thermometer 5 is able to accurately measure the true temperature of the liquid surface during the reaction in a clear environment.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A dynamic argon gas protection temperature measuring device resistant to flue gas interference, characterized in that, The system includes an argon tank (1), a gas pump (2), a hose (4), a gas pipeline (12), an infrared thermometer (5), an electric slide rail (6), a host computer (7), a ranging radar (8), and a reactor (10). The gas pump (2) has its inlet connected to the argon tank (1), its outlet connected to one end of the hose (4), and the other end of the hose (4) connected to the gas pipeline (12). The electric slide rail (6) is vertically mounted on the reactor (10), and the gas pipeline (12) is vertically mounted on the slider of the electric slide rail (6). The gas outlet of the pipe (12) extends into the reactor (10) and is positioned to correspond to the liquid surface of the liquid metal (11) inside the reactor; the infrared thermometer (5) is installed at the upper end of the gas pipe (12) with its detection end facing the liquid surface of the liquid metal (11) inside the reactor; the ranging radar (8) is installed on the reactor (10) with its ranging end facing the liquid surface of the liquid metal (11) inside the reactor (10); the host computer (7) is connected to the ranging radar (8), the electric slide rail (6) and the infrared thermometer (5) respectively.

2. The dynamic argon gas protection temperature measuring device for resisting flue gas interference according to claim 1, characterized in that, It also includes a valve (3), which is installed in the air passage between the air pump (2) and the hose (4).

3. The dynamic argon gas protection temperature measuring device for resisting flue gas interference according to claim 1, characterized in that, It also includes a flue gas treatment pipe (9), which is located on top of the reactor (10).

4. The dynamic argon gas protection temperature measuring device for resisting flue gas interference according to claim 1, characterized in that, It also includes a ranging pipe (13), which is vertically installed on the reactor (10) and connected to the reactor (10). The ranging radar (8) is fixedly installed on the ranging pipe (13), and the ranging end of the ranging radar (8) is vertically facing the liquid surface of the liquid metal (11).

5. The dynamic argon gas protection temperature measuring device for resisting flue gas interference according to claim 1, characterized in that, The distance between the gas outlet of the gas pipe (12) and the liquid surface of the liquid metal (11) in the reactor (10) is 10-20cm.

6. The dynamic argon gas protection temperature measuring device for resisting flue gas interference according to claim 1, characterized in that, The ranging radar (8) is a millimeter-wave radar.

7. The dynamic argon gas protection temperature measuring device for resisting flue gas interference according to claim 1, characterized in that: The infrared thermometer (5) is fixed to the upper side wall of the gas pipe (12) by a rigid mounting bracket, and its detection optical path is parallel to the axis of the gas pipe (12).

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