Temperature measuring device for smelting furnace, temperature measuring method, and smelting furnace apparatus

Abstract

The application provides a temperature measuring device for a smelting furnace, a temperature measuring method and a smelting furnace equipment. The temperature measuring device for the smelting furnace comprises a temperature measuring element, a driving mechanism and a control system. The driving mechanism is controlled by the control system to drive the temperature measuring element to automatically complete the whole process of insertion, temperature measurement and withdrawal, without manual operation of the temperature measuring gun, so that the labor intensity of the staff is greatly reduced, the safety risk caused by manual approach to the high-temperature smelting furnace is avoided, and the safety of the temperature measurement process is improved. At the same time, the driving mechanism can drive the temperature measuring element to be temporarily inserted into the metal liquid only during temperature measurement, and the temperature measuring element is immediately removed after the temperature measurement is completed, so that the temperature measuring element is fundamentally prevented from being immersed in the high-temperature, strong-corrosive and strong-erosive metal liquid for a long time, the corrosion loss of the temperature measuring element is reduced, the service life of the temperature measuring element is prolonged, the maintenance cost and the replacement frequency are reduced. That is, reliable data support is provided for stable control of the smelting process through automatic temperature measurement.

Description

Technical Field

[0001] This application relates to the field of temperature detection technology, and in particular to a temperature measuring device, temperature measuring method, and smelting furnace equipment for a melting furnace. Background Technology

[0002] A smelting furnace is a device used to melt metals such as zinc to form molten metal. The temperature of the molten metal during the smelting process is the most critical process parameter, and its stability directly determines the smelting quality and energy consumption.

[0003] Currently, there are two main methods for measuring the temperature of molten metal: one is to manually use a portable handheld thermometer to measure the temperature intermittently, which involves high labor intensity, discontinuous data, and high safety risks. The other is to fix thermocouples on the furnace wall of the smelting furnace to measure the temperature of the molten metal, but because the thermocouples are immersed in the high temperature, highly corrosive, and flowing molten metal for a long time, they are prone to corrosion and temperature measurement failure.

[0004] Therefore, how to achieve automatic temperature measurement of liquid metal while avoiding short-term temperature measurement failure is a problem that this application urgently needs to solve. Summary of the Invention

[0005] The purpose of this application is to provide a temperature measuring device, temperature measuring method and smelting furnace equipment for a melting furnace, aiming to solve the problem of how to achieve automatic temperature measurement of molten metal while avoiding short-term temperature measurement failure.

[0006] In a first aspect, embodiments of this application provide a temperature measuring device for a smelting furnace, including a temperature measuring element, a driving mechanism, and a control system; The driving mechanism is used to be installed on the furnace body and connected to the temperature sensing element, so as to drive the temperature sensing element to move toward the furnace body and insert it into the molten metal inside the furnace body to detect and acquire the temperature signal of the molten metal; or to move toward the furnace body to remove it from the molten metal. The control system is electrically connected to the drive mechanism and the temperature measuring element respectively, and is used to control the working state of the drive mechanism and is configured to receive the temperature signal and convert it into a temperature value for display.

[0007] In some embodiments, one end of the temperature sensing element forms a connection end connected to the drive mechanism, and the other end of the temperature sensing element forms a probe end for detecting and acquiring temperature signals. The outer wall of the temperature sensing element, including at least the portion of the probe end, is provided with a protective layer.

[0008] In some embodiments, the protective layer includes a first protective layer sleeved on the outer wall of the temperature sensing element and a second protective layer disposed outside the first protective layer, wherein the second protective layer is disposed on the furnace body and slides in cooperation with the first protective layer.

[0009] In some embodiments, the first protective layer is a silicon carbide ceramic layer. And / or, the second protective layer is a stainless steel layer.

[0010] In some embodiments, the temperature measuring device further includes a bracket, which is disposed on the outer wall of the smelting furnace body, and the driving mechanism is disposed on the bracket; And / or, the drive mechanism includes a drive cylinder, the piston rod of which is connected to the temperature sensing element.

[0011] In some embodiments, the temperature sensing element is a thermocouple; And / or, the temperature measuring range of the temperature measuring element is 0℃-1300℃.

[0012] In some embodiments, the control system includes a display unit, an information conversion unit, and a signal acquisition unit; The signal acquisition unit is electrically connected to the temperature measuring element and the information conversion unit respectively, and is configured to receive the temperature signal and transmit it to the information conversion unit; The information conversion unit is configured to receive the temperature signal and convert it into a temperature value; The display unit is electrically connected to the information conversion unit and the monitoring system of the smelting furnace body, and is configured to receive and display the temperature value and transmit the temperature value to the monitoring system.

[0013] In some embodiments, the control system further includes a filtering unit, which is electrically connected to the signal acquisition unit and the information conversion unit, and is configured to receive the temperature signal, filter the temperature signal, and then transmit it to the information conversion unit.

[0014] Secondly, this application provides a temperature measurement method using a temperature measuring device, comprising: The control system is used to control the drive mechanism to start after receiving a temperature measurement command, so as to drive the temperature measuring element to move from the initial position toward the direction of the melting furnace body and insert it into the molten metal inside the melting furnace body, and to control the drive mechanism to stop after the temperature measuring element is inserted to a preset depth, so that the temperature measuring element is inserted into the molten metal and remains there for a preset time to detect and acquire the temperature signal of the molten metal. The control system receives the temperature signal, converts the temperature signal into a temperature value, and then displays it. The control system controls the drive mechanism to start, so as to drive the temperature measuring element to move away from the furnace body, so as to remove it from the molten metal and reset it to the initial position; Repeat the above steps to perform intermittent temperature detection on the molten metal.

[0015] Thirdly, this application provides a smelting furnace device, including a smelting furnace body, a monitoring system, and a temperature measuring device. The monitoring system is electrically connected to the control system to receive the temperature value and perform real-time early warning monitoring of the temperature value.

[0016] The beneficial effects of this invention are: This invention provides a temperature measuring device, a temperature measuring method, and a smelting furnace apparatus. The temperature measuring device includes a temperature measuring element, a driving mechanism, and a control system. The driving mechanism is mounted on the smelting furnace body and connected to the temperature measuring element to drive the temperature measuring element to move towards the smelting furnace body and insert it into the molten metal inside the smelting furnace body to detect and acquire the temperature signal of the molten metal; or to move away from the smelting furnace body to remove it from the molten metal. The control system is electrically connected to the driving mechanism and is used to control the operating state of the driving mechanism; the control system is also configured to be electrically connected to the temperature measuring element to receive the temperature signal and convert it into a temperature value for display.

[0017] In other words, the temperature measuring device of this application, through a control system that controls the drive mechanism, automatically completes the entire process of insertion, temperature measurement, and withdrawal of the temperature measuring element. This eliminates the need for manual operation of the temperature gun, significantly reducing the labor intensity of workers and avoiding the safety risks associated with manual proximity to the high-temperature smelting furnace, thus improving the safety of the temperature measurement process. Simultaneously, the drive mechanism allows the temperature measuring element to be briefly inserted into the molten metal during measurement and immediately removed afterward. This prevents the element from being immersed in the high-temperature, highly corrosive, and strongly eroding molten metal for extended periods, fundamentally reducing corrosion and wear, extending its service life, and lowering maintenance costs and the frequency of downtime for replacement. Furthermore, the control system receives and processes the temperature signal from the measuring element in real time, converting it into a displayed temperature value. This automated control improves temperature measurement accuracy and provides reliable temperature data support for the stable control of the smelting process. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a temperature measuring device for a smelting furnace shown in an embodiment of this application. Figure 1 ; Figure 2 This is a schematic diagram of the structure of a temperature measuring device for a smelting furnace shown in an embodiment of this application. Figure 2 ; Figure 3 This is a schematic diagram of the structure of a temperature measuring device for a smelting furnace shown in an embodiment of this application. Figure 3 ; Figure 4 This is a schematic diagram of the structure of the temperature measuring element of the temperature measuring device for a melting furnace shown in the embodiment of this application, with the second protective layer removed; Figure 5 This is a schematic diagram of the structure of the temperature measuring element of the temperature measuring device for a melting furnace shown in an embodiment of this application; Figure 6 This is a schematic diagram of the circuit structure of a temperature measuring device for a smelting furnace as shown in an embodiment of this application; Figure 7 This is a schematic diagram of the temperature measurement method shown in the embodiments of this application.

[0020] Figure label: 100 Temperature sensing element; 110 Connection end; 120 Protective layer; 121 First protective layer; 122 Second protective layer; 200 Drive mechanism; 300 Control system; 310 Display unit; 320 Information conversion unit; 330 Signal acquisition unit; 340 Filtering unit; 400 Bracket; 500 Monitoring system. Detailed Implementation

[0021] In the embodiments of this application, the terms "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," "third," "fourth," "fifth," and "sixth" may explicitly or implicitly include one or more of that feature.

[0022] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0023] Reference Figures 1 to 6 As shown, this embodiment provides a temperature measuring device for a smelting furnace, including a temperature measuring element 100, a driving mechanism 200, and a control system 300.

[0024] The drive mechanism 200 is installed on the furnace body and connected to the temperature sensing element 100 to drive the temperature sensing element 100 to move toward the furnace body and insert into the molten metal inside the furnace body to detect and acquire the temperature signal of the molten metal; or to move away from the furnace body to remove it from the molten metal.

[0025] The control system 300 is electrically connected to the drive mechanism 200 and is used to control the working state of the drive mechanism 200; and the control system 300 is configured to be electrically connected to the temperature sensing element 100 and is used to receive temperature signals and convert them into temperature values ​​for display.

[0026] In practice, during temperature measurement, the temperature sensing element 100 is used to directly contact the molten metal inside the melting furnace body, sense the temperature of the molten metal, and convert it into a recognizable temperature signal (such as a thermoelectric potential signal) to provide basic data for temperature measurement. For example, the temperature sensing element 100 can be selected from those adapted to the high-temperature and corrosive environment of the melting furnace, such as a type K thermocouple, to ensure the accuracy of temperature signal acquisition.

[0027] The drive mechanism 200 is fixedly installed on the furnace body and mechanically connected to the temperature sensing element 100. Under the drive of external commands, it drives the temperature sensing element 100 to complete two key actions: First, when temperature measurement is required, the temperature sensing element 100 is driven to move towards the furnace body until it is inserted into the molten metal inside the furnace body, so that the temperature sensing element 100 can directly contact the molten metal being measured and accurately obtain the temperature signal; Second, after the temperature measurement is completed, the temperature sensing element 100 is driven to move away from the furnace body, completely removing the temperature sensing element 100 from the molten metal, so that it is removed from the harsh environment of high temperature, strong corrosion, and strong scouring, and avoiding corrosion failure caused by long-term immersion.

[0028] The control system 300 is electrically connected to the drive mechanism 200. By outputting control signals (such as controlling the on and off of the solenoid valve), it precisely controls the working state of the drive mechanism 200, including the insertion depth of the temperature measuring element 100, the dwell time, and the timing of withdrawal, thereby realizing automated control of the temperature measurement process without manual intervention.

[0029] In addition, the control system 300 is configured to be electrically connected to the temperature sensing element 100, and can receive temperature signals (such as thermoelectric potential signals) collected by the temperature sensing element 100 in real time, convert them into intuitive temperature values, and display the temperature values, so that the staff can view the temperature of the molten metal in the furnace body in real time and realize the visualization of temperature data.

[0030] In summary, the temperature measuring device of this embodiment controls the drive mechanism 200 through the control system 300 to automatically complete the entire process of insertion, temperature measurement, and withdrawal of the temperature measuring element 100. This eliminates the need for manual operation of the temperature measuring gun, significantly reducing the labor intensity of workers and avoiding the safety risks associated with manual approach to the high-temperature smelting furnace, thus improving the safety of the temperature measuring process.

[0031] Meanwhile, the drive mechanism 200 can drive the temperature sensing element 100 to be briefly inserted into the molten metal during temperature measurement and immediately removed after the temperature measurement is completed. This avoids the temperature sensing element 100 being immersed in the high-temperature, highly corrosive, and strongly scouring molten metal for a long time, fundamentally reducing the corrosion and wear of the temperature sensing element 100, extending its service life, and reducing equipment maintenance costs and the frequency of downtime for replacement.

[0032] In addition, the control system 300 receives and processes the temperature signal from the temperature sensing element 100 in real time and converts it into a temperature value display. By setting the action cycle of the drive mechanism 200, the system can realize the periodic automatic temperature measurement of the molten metal, which makes up for the discontinuous data of manual intermittent temperature measurement. At the same time, the automatic control improves the temperature measurement accuracy and provides reliable temperature data support for the stable control of the smelting process.

[0033] In addition, the overall structure of the temperature measuring device is simple, the drive mechanism 200 can be directly installed on the furnace body, and the movement trajectory of the temperature measuring element 100 can be accurately adapted to the furnace structure and the liquid level of the metal, making it suitable for high-temperature and corrosive working conditions such as zinc smelting, and highly practical.

[0034] Reference Figures 1 to 6 As shown, in some embodiments, one end of the temperature sensing element 100 forms a connection end 110 connected to the drive mechanism 200, and the other end of the temperature sensing element 100 forms a detection end for detecting and acquiring temperature signals. The outer wall of the temperature sensing element 100, including at least the portion of the detection end, is provided with a protective layer 120.

[0035] In practice, the connection end 110 is used to achieve a stable connection between the temperature measuring element 100 and the drive mechanism 200, ensuring that the drive mechanism 200 can accurately drive the temperature measuring element 100 to complete the insertion and removal actions, and avoiding temperature measurement deviation or equipment failure caused by loose connection.

[0036] As the component that directly contacts the molten metal, the probe end is the core part for temperature signal acquisition, and its structural design directly affects the temperature measurement accuracy. In this embodiment, a protective layer 120 is provided on the outer wall of the temperature sensing element 100, including at least the probe end. The core purpose is to protect the probe end from high-temperature corrosion and erosion by the molten metal, prevent the probe end from being damaged rapidly due to direct contact with harsh working conditions, extend the service life of the temperature sensing element 100, and prevent temperature signal drift caused by corrosion, thus ensuring temperature measurement accuracy.

[0037] Reference Figures 1 to 6 As shown, in some embodiments, the protective layer 120 includes a first protective layer 121 sleeved on the outer wall of the temperature sensing element 100 and a second protective layer 122 disposed outside the first protective layer 121. The second protective layer 122 is disposed on the furnace body and slides in cooperation with the first protective layer 121.

[0038] In practice, the first protective layer 121 is directly sleeved on the outer wall of the temperature sensing element 100 and is tightly fitted to the temperature sensing element 100. Its main function is to directly isolate the temperature sensing element 100 from the liquid metal and reduce the impact of high temperature and corrosion on the temperature sensing element 100 itself.

[0039] The second protective layer 122 is provided on the furnace body as an outer layer of protection. It can support and protect the first protective layer 121, and through sliding cooperation with the first protective layer 121, it can not affect the insertion and removal of the temperature measuring element 100 driven by the drive mechanism 200.

[0040] In other words, when the drive mechanism 200 drives the temperature measuring element 100 to move, the first protective layer 121 can slide relative to the second protective layer 122 fixed on the furnace body, ensuring smooth temperature measurement. At the same time, the first protective layer 121 and the second protective layer 122 form a double protection structure, thereby forming a "double barrier", which further reduces the probability of the temperature measuring element 100 being corroded or damaged. Compared with a single protective layer 120, the protection effect is more reliable and more suitable for the harsh working conditions of high temperature, strong corrosion and strong erosion in the furnace.

[0041] In some embodiments, the first protective layer 121 is a silicon carbide ceramic layer, and the second protective layer 122 is a stainless steel layer.

[0042] In practice, the silicon carbide ceramic layer serves as the first protective layer 121, which has extremely high temperature resistance, corrosion resistance, and excellent thermal conductivity. It can effectively isolate the corrosion and high temperature of the molten metal without affecting the temperature sensing element 100's temperature perception, ensuring that the temperature signal can be transmitted quickly and accurately, perfectly meeting the requirement that the detection end of the temperature sensing element 100 directly contacts the molten metal.

[0043] The stainless steel layer serves as the second protective layer 122. For example, it can be made of 316L material, which has good mechanical strength and corrosion resistance. It can provide solid mechanical support for the first protective layer 121. At the same time, stainless steel is easy to process and fix, making it easy to install on the furnace body. It forms a synergistic protection with the first protective layer 121, further extending the service life of the temperature measuring element 100 and reducing maintenance costs.

[0044] In some embodiments, the temperature measuring device further includes a bracket 400, which is disposed on the outer wall of the smelting furnace body, and a drive mechanism 200 is disposed on the bracket 400.

[0045] In practice, the bracket 400 is used to stably fix the drive mechanism 200 on the outer wall of the smelting furnace body, so as to prevent the drive mechanism 200 from shaking when it is working, ensure the driving accuracy, and at the same time isolate the drive mechanism 200 from the high temperature area of ​​the smelting furnace, protect the drive mechanism 200 from the high temperature, and extend the service life of the drive mechanism 200.

[0046] For example, the support 400 can be a pure frame structure or a frame structure with plate-like top and bottom.

[0047] In some embodiments, the drive mechanism 200 includes a drive cylinder, and the piston rod of the drive cylinder is connected to the temperature sensing element 100.

[0048] In a specific implementation, the drive mechanism 200 can be, for example, a drive cylinder. The drive cylinder has the characteristics of rapid action, stable driving force, and precise control. Its piston rod is connected to the temperature measuring element 100, which can accurately respond to the instructions of the control system 300 and drive the temperature measuring element 100 to achieve smooth insertion and removal. Compared with other drive methods (such as motor drive), it is more suitable for high-frequency, short-stroke intermittent temperature measurement. In conjunction with the control system 300, it realizes the automated control of the temperature measurement process and further solves the drawbacks of manual temperature measurement.

[0049] In some embodiments, the temperature sensing element 100 is a thermocouple; the temperature sensing range of the temperature sensing element 100 is 0℃-1300℃.

[0050] In practice, the thermocouple, as the temperature sensing element 100, has the characteristics of wide temperature measurement range, fast response speed, simple structure, and adaptability to high temperature working conditions. It can accurately sense the temperature of the liquid metal and convert it into a thermoelectric potential signal.

[0051] For example, the thermocouple can be a type K thermocouple, such as model SSM2.3-300. Its temperature measurement range is 0℃-1300℃, which fully covers the temperature range in the smelting process of metals such as zinc (zinc's melting point is approximately 419℃, and the smelting temperature is typically between 450℃ and 550℃). In other words, this temperature measurement range not only meets the temperature measurement needs of daily smelting processes but also has a certain redundancy to adapt to temperature variations in different smelting processes, ensuring accurate temperature measurement under various operating conditions and avoiding problems such as inability to detect properly or excessive temperature measurement errors due to insufficient temperature measurement range.

[0052] Reference Figures 1 to 6 As shown, in some embodiments, the control system 300 includes a display unit 310, an information conversion unit 320, and a signal acquisition unit 330; The signal acquisition unit 330 is electrically connected to the temperature measuring element 100 and the information conversion unit 320 respectively, and is configured to receive temperature signals and transmit them to the information conversion unit 320. The information conversion unit 320 is configured to receive temperature signals and convert them into temperature values; The display unit 310 is electrically connected to the information conversion unit 320 and the monitoring system 500 of the smelting furnace, and is configured to receive the displayed temperature value and transmit the temperature value to the monitoring system 500.

[0053] In practice, the signal acquisition unit 330 is used to receive the temperature signal (such as thermoelectric potential signal) collected by the temperature measuring element 100 in real time and accurately transmit it to the information conversion unit 320 to ensure that the temperature signal is not lost or interfered with.

[0054] The information conversion unit 320 is used to convert the electrical signal (such as thermoelectric potential signal) output by the temperature sensing element 100 into a temperature value that can be directly viewed by the staff, thus solving the problem that the temperature signal cannot be directly identified.

[0055] The display unit 310 receives and displays the temperature value transmitted by the information conversion unit 320, enabling staff to monitor the temperature of the molten metal in real time. On the other hand, it transmits the temperature value to the monitoring system 500 of the smelting furnace, realizing centralized monitoring and storage of temperature data. This lays the foundation for optimizing the smelting process and implementing automatic closed-loop control, completely eliminating the reliance on manual temperature measurement and achieving automation and intelligence in the temperature measurement process.

[0056] For example, the control system 300 may be a PLC controller, specifically an S7-200 SMART. For example, the signal acquisition unit 330 may be a signal acquisition and transmission device. The information conversion unit 320 may be a transmitter.

[0057] Reference Figures 1 to 6 As shown, in some embodiments, the control system 300 further includes a filtering unit 340, which is electrically connected to the signal acquisition unit 330 and the information conversion unit 320 respectively, and is configured to receive the temperature signal, filter the temperature signal and then transmit it to the information conversion unit 320.

[0058] Because the smelting furnace itself generates strong electromagnetic interference during operation, and the flow of molten metal and slight temperature fluctuations can cause noise in the temperature signal collected by the temperature sensing element 100, affecting the accuracy of temperature measurement, this embodiment includes a filtering unit 340. This unit performs real-time filtering on the temperature signal received by the signal acquisition unit 330, filtering out interference noise and invalid signals, retaining the true and stable temperature signal, and then transmitting the processed signal to the information conversion unit 320. This ensures that the converted temperature value is more accurate and stable, avoids temperature measurement errors caused by signal interference, and further improves the reliability of the temperature measuring device.

[0059] For example, the filtering unit 340 can be Kalman filter algorithm software.

[0060] Finally, to evaluate the temperature accuracy of the temperature measuring device in this embodiment, the testers collected 40 sets of valid data samples and compared and analyzed the temperature values ​​detected by the temperature measuring device in this embodiment with the temperature values ​​detected manually on site (see the table below for details).

[0061] Serial Number The temperature (°C) measured in this embodiment Temperature measured manually (°C) Detection error (°C) relative error 1 497.7 496.2 1.5 0.30% 2 510.7 509.3 1.4 0.27% 3 529.7 530.2 -0.5 -0.09% 4 520.7 520.5 0.2 0.04% 5 507.8 507.6 0.1 0.02% 6 504.7 503.8 0.9 0.18% 7 505.9 506.1 -0.2 -0.04% 8 506.9 505.4 1.5 0.30% 9 509.8 511.1 -1.2 -0.23% 10 531.8 530.3 1.5 0.28% 11 516.9 516.9 0.0 0.00% 12 515.8 515.1 0.7 0.14% 13 507.9 506.5 1.4 0.28% 14 531.7 531.3 0.4 0.08% 15 556.7 555.0 1.8 0.32% 16 538.7 537.7 1.0 0.19% 17 532.7 533.4 -0.7 -0.13% 18 529.6 528.9 0.7 0.13% 19 528.6 529.0 -0.3 -0.06% 20 526.5 527.1 -0.7 -0.13% 21 517.5 517.5 0.0 0.00% 22 504.6 505.0 -0.4 -0.08% 23 526.6 526.7 0.0 0.00% 24 524.6 523.8 0.8 0.15% 25 513.6 512.6 1.1 0.21% 26 523.6 522.9 0.6 0.11% 27 521.6 522.3 -0.7 -0.13% 28 511.6 510.9 0.7 0.14% 29 531.4 532.7 -1.2 -0.23% 30 532.5 532.2 0.3 0.06% 31 510.5 509.6 0.9 0.18% 32 532.5 533.5 -1.0 -0.19% 33 523.5 524.0 -0.5 -0.10% 34 523.5 523.8 -0.3 -0.06% 35 520.5 520.4 0.1 0.02% 36 511.5 512.7 -1.2 -0.23% 37 518.5 517.7 0.8 0.15% 38 517.4 517.3 0.1 0.02% 39 507.5 508.2 -0.7 -0.14% 40 500.5 500.9 -0.4 -0.08% The comparison of the 40 sets of data in the table above shows that the maximum temperature measurement error of the temperature measuring device in this embodiment is +1.8℃ and -1.2℃, and the average absolute error is 0.7℃, which is completely better than the industrial application requirement of ±10℃.

[0062] Reference Figure 7 As shown, this embodiment provides a temperature measurement method using a temperature measuring device, including: S101: The control system 300 is used to control the drive mechanism 200 to start after receiving the temperature measurement command, so as to drive the temperature measuring element 100 to move from the initial position toward the direction close to the melting furnace body and insert it into the molten metal inside the melting furnace body, and control the drive mechanism 200 to stop after the temperature measuring element 100 is inserted to a preset depth, so that the temperature measuring element 100 is inserted into the molten metal and remains there for a preset time to detect and acquire the temperature signal of the molten metal. S102: The control system 300 receives the temperature signal, converts the temperature signal into a temperature value, and then displays it; S103: The control system 300 controls the drive mechanism 200 to start, so as to drive the temperature measuring element 100 to move away from the furnace body, so as to remove it from the molten metal and reset it to the initial position; S104: Repeat the above steps to perform intermittent temperature detection on the molten metal.

[0063] The specific structure and implementation principle of the temperature measuring device for the smelting furnace in this embodiment are the same as those of the temperature measuring device for the smelting furnace provided in the above embodiment, and can bring the same or similar technical effects. They will not be described in detail here, but can be referred to the description of the above embodiment.

[0064] The specific temperature measurement steps are briefly described below: Step 1: Start the temperature measurement process. After receiving the temperature measurement command (which can be issued manually by the staff or automatically triggered by the system's preset cycle), the control system 300 immediately sends a start signal to the drive mechanism 200 to start the drive mechanism 200. After the drive mechanism 200 (such as a drive cylinder) responds to the signal, it drives the temperature sensing element 100 from its initial position (a standby position away from the furnace body and out of the high-temperature area) towards the furnace body, until the probe end of the temperature sensing element 100 is inserted into the molten metal inside the furnace body. When the temperature sensing element 100 is inserted to a preset depth (this depth is preset according to the liquid level of the furnace and the temperature measurement requirements to ensure that the probe end is completely immersed in the molten metal and to ensure the accuracy of the temperature measurement), the control system 300 controls the drive mechanism 200 to stop, keeping the temperature sensing element 100 inserted into the molten metal for a preset time (usually 3-5 seconds, to ensure that the temperature sensing element 100 fully senses the temperature of the molten metal, stabilizes the temperature signal, and avoids measurement errors due to too short a dwell time). During this period, the probe end of the temperature sensing element 100 continuously detects and acquires the temperature signal of the molten metal.

[0065] Step 2: Temperature Signal Processing and Display. The temperature sensing element 100 transmits the acquired temperature signal (such as a thermoelectric potential signal) to the signal acquisition unit 330 of the control system 300. The signal acquisition unit 330 transmits the temperature signal to the filtering unit 340, where it is filtered to remove interference noise before being transmitted to the information conversion unit 320. The information conversion unit 320 converts the received temperature signal into a visually appealing temperature value, which is then transmitted to the display unit 310. The display unit 310 receives the temperature value and displays it in real time for easy viewing by staff. Simultaneously, it transmits the temperature value to the furnace monitoring system 500 for centralized storage and monitoring of temperature data.

[0066] Step 3: Temperature sensing element 100 reset. After the temperature signal is acquired and processed, the control system 300 sends a start signal to the drive mechanism 200 again, controlling the drive mechanism 200 to reverse its action, driving the temperature sensing element 100 to move away from the furnace body until the temperature sensing element 100 is completely removed from the molten metal and reset to the initial standby position, so as to avoid the temperature sensing element 100 being in a high temperature and strong corrosive environment for a long time.

[0067] Step 4: Intermittent Cyclic Temperature Measurement. Repeat the above three steps, and perform periodic intermittent temperature measurements on the molten metal according to the preset temperature measurement cycle (which can be adjusted according to the smelting process requirements), to achieve continuous and automated monitoring of the molten metal temperature without manual intervention.

[0068] In summary, the temperature measurement method of this embodiment can achieve intermittent temperature measurement. Combined with the coordinated control of the drive mechanism 200 and the control system 300, the temperature sensing element 100 only briefly contacts the molten metal during temperature measurement, remaining in its initial standby position most of the time. This fundamentally solves the problem of corrosion and failure of fixed thermocouples due to long-term immersion, and also fundamentally solves the problem of long-term high-temperature exposure of the temperature sensing element 100. Simultaneously, it automates the temperature measurement process, balancing measurement accuracy (error ≤ ±1.8℃) and equipment lifespan (tests show that the average lifespan of the temperature sensing element 100 is extended by more than 600%, reaching up to 4 months, significantly reducing maintenance costs and downtime).

[0069] Reference Figures 1 to 6 As shown, this embodiment provides a smelting furnace device, including a smelting furnace body, a monitoring system 500, and a temperature measuring device. The monitoring system 500 is electrically connected to the control system 300 to receive temperature values ​​and perform real-time early warning monitoring of the temperature values.

[0070] The specific structure and implementation principle of the temperature measuring device for the smelting furnace in this embodiment are the same as those of the temperature measuring device for the smelting furnace provided in the above embodiment, and can bring the same or similar technical effects. They will not be described in detail here, but can be referred to the description of the above embodiment.

[0071] In the description of the embodiments of this application, specific features, structures, materials or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0072] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A temperature measuring device for a smelting furnace, characterized in that, include: Temperature sensing element; A drive mechanism is used to be installed on the furnace body and connected to the temperature sensing element to drive the temperature sensing element to move toward the furnace body and insert it into the molten metal inside the furnace body to detect and acquire the temperature signal of the molten metal; or to move toward the furnace body to remove it from the molten metal. The system is electrically connected to the drive mechanism and the temperature measuring element, respectively, and is used to control the working state of the drive mechanism and is configured to receive the temperature signal and convert it into a temperature value for display.

2. The temperature measuring device for a smelting furnace according to claim 1, characterized in that, One end of the temperature sensing element forms a connection end that is connected to the drive mechanism, and the other end of the temperature sensing element forms a detection end for detecting and acquiring temperature signals. The outer wall of the temperature sensing element, including at least the portion of the detection end, is provided with a protective layer.

3. The temperature measuring device for a smelting furnace according to claim 2, characterized in that, The protective layer includes a first protective layer sleeved on the outer wall of the temperature measuring element and a second protective layer disposed outside the first protective layer. The second protective layer is disposed on the furnace body and slides in conjunction with the first protective layer.

4. The temperature measuring device for a smelting furnace according to claim 3, characterized in that, The first protective layer is a silicon carbide ceramic layer. And / or, the second protective layer is a stainless steel layer.

5. The temperature measuring device for a smelting furnace according to any one of claims 1 to 4, characterized in that, The temperature measuring device also includes a bracket, which is disposed on the outer wall of the smelting furnace body, and the driving mechanism is disposed on the bracket; And / or, the drive mechanism includes a drive cylinder, the piston rod of which is connected to the temperature sensing element.

6. The temperature measuring device for a smelting furnace according to any one of claims 1 to 4, characterized in that, The temperature sensing element is a thermocouple; And / or, the temperature measuring range of the temperature measuring element is 0℃-1300℃.

7. The temperature measuring device for a smelting furnace according to any one of claims 1 to 4, characterized in that, The control system includes a display unit, an information conversion unit, and a signal acquisition unit; The signal acquisition unit is electrically connected to the temperature measuring element and the information conversion unit respectively, and is configured to receive the temperature signal and transmit it to the information conversion unit; The information conversion unit is configured to receive the temperature signal and convert it into a temperature value; The display unit is electrically connected to the information conversion unit and the monitoring system of the smelting furnace body, and is configured to receive and display the temperature value and transmit the temperature value to the monitoring system.

8. The temperature measuring device for a smelting furnace according to claim 7, characterized in that, The control system further includes a filtering unit, which is electrically connected to the signal acquisition unit and the information conversion unit, and is configured to receive the temperature signal, filter the temperature signal, and then transmit it to the information conversion unit.

9. A temperature measurement method using the temperature measuring device as described in any one of claims 1 to 8, characterized in that, include: The control system is used to control the drive mechanism to start after receiving a temperature measurement command, so as to drive the temperature measuring element to move from the initial position toward the direction of the melting furnace body and insert it into the molten metal inside the melting furnace body, and to control the drive mechanism to stop after the temperature measuring element is inserted to a preset depth, so that the temperature measuring element is inserted into the molten metal and remains there for a preset time to detect and acquire the temperature signal of the molten metal. The control system receives the temperature signal, converts the temperature signal into a temperature value, and then displays it. The control system controls the drive mechanism to start, so as to drive the temperature measuring element to move away from the furnace body, so as to remove it from the molten metal and reset it to the initial position; Repeat the above steps to perform intermittent temperature detection on the molten metal.

10. A smelting furnace device, characterized in that, The system includes a smelting furnace body, a monitoring system, and a temperature measuring device for the smelting furnace as described in any one of claims 1 to 8, wherein the monitoring system is electrically connected to the control system to receive the temperature value and perform real-time early warning monitoring of the temperature value.

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