A temperature measuring device for the bottom of an aluminum smelting furnace

Abstract

The utility model relates to the temperature measurement technology field of aluminium smelting furnace bottom, propose a kind of aluminium smelting furnace bottom temperature measuring device, including aluminium smelting furnace, magnetic attraction type thermocouple patch, PLC control equipment, host computer, audible-visual alarm and equipment emergency stop device, the utility model is by setting magnetic attraction type thermocouple patch to the sampling monitoring of aluminium smelting furnace outside end surface temperature, can realize furnace outside end surface evenly distributed point temperature measurement, and increase the alarm function on the basis of through PLC control equipment display historical trend. Compared with using traditional manual measurement, not only can realize real furnace outside end surface point temperature real-time uninterrupted monitoring, reduce the labor intensity of operator manual temperature measurement, but also can control audible-visual alarm and emergency stop device emergency stop through PLC control equipment when each hour temperature rise of measurement point temperature is too high, measurement point temperature is too high, in addition, the temperature change trend of each measurement point can be understood by viewing historical trend, to judge the leakage of each measurement point.

Description

Technical Field

[0001] This utility model relates to the field of temperature measurement technology for the bottom of aluminum smelting furnaces, specifically to a temperature measurement device for the bottom of aluminum smelting furnaces. Background Technology

[0002] The main function of an aluminum smelting furnace is to receive high-temperature molten aluminum from the electrolytic cell, perform heat preservation, precise temperature control, final composition adjustment, and purification of the molten aluminum. The furnace body is constructed with heavy-duty refractory materials and a high-efficiency insulation layer. Heating methods primarily involve gas combustion or resistance heating to ensure that the molten aluminum is maintained at the target casting temperature for an extended period with highly uniform temperature distribution. Its performance directly affects the quality, yield, and energy consumption of the final aluminum product, making it one of the core pieces of equipment ensuring a smooth and efficient aluminum processing flow and stable product quality.

[0003] With prolonged use of smelting furnaces, there is a risk of furnace leakage at the furnace bottom and sides. The common method is to use a temperature gun to measure the temperature of the furnace bottom and sides periodically. This method is not only labor-intensive, but also prone to deviations in the actual temperature measurement results due to the uncertainty of the measurement personnel's skill level. Furthermore, there is no clear record or analysis of the temperature change trend. Therefore, measuring and analyzing the temperature of the furnace bottom and sides has become an effective way to understand the furnace condition and avoid furnace leakage. Summary of the Invention

[0004] The purpose of this utility model is to provide a temperature measuring device for the bottom of an aluminum smelting furnace to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a temperature measuring device for the bottom of an aluminum smelting furnace, comprising an aluminum smelting furnace, a magnetic thermocouple patch, a PLC control device, a host computer, an audible and visual alarm, and an emergency stop device. The magnetic thermocouple patch is magnetically attached to the outer end face of the aluminum smelting furnace. The magnetic thermocouple patch is electrically connected to the PLC control device. The PLC control device is electrically connected to the host computer. The PLC control device is electrically connected to the audible and visual alarm and the emergency stop device.

[0006] Preferably, the magnetic thermocouple patches are evenly distributed on the outer end face of the aluminum smelting furnace.

[0007] Preferably, the magnetic thermocouple patch transmits the temperature signal from the outer end face of the aluminum smelting furnace to the PLC control device. The PLC control device monitors the temperature of each measuring point in real time through a built-in AI chip, and judges the leakage situation at each measuring point by the temperature change trend of each measuring point.

[0008] Preferably, the PLC control device includes a PLC controller and a host computer display device. The PLC control system built into the PLC control device includes an analog input module and a digital output module, which can realize the acquisition of temperature signals of all magnetic thermocouple patches and the output of alarm signals. The host computer displays the temperature signals and historical trends of the magnetic thermocouple patch measuring points and can set the alarm preset for the temperature rise value per unit hour.

[0009] Preferably, when the PLC control device detects that the temperature rise of the magnetic thermocouple patch measuring point exceeds the alarm setting value on the host computer screen, the PLC control device controls the audible and visual alarm to perform an audible and visual alarm. When the PLC control device detects that the temperature of the magnetic thermocouple patch measuring point exceeds the maximum temperature alarm value, the PLC control device will control the equipment emergency stop device to perform an emergency power-off stop of the equipment.

[0010] Compared with the prior art, the beneficial effects of this utility model are: This invention utilizes magnetic thermocouple patches to sample and monitor the temperature of the outer end face of an aluminum smelting furnace. It achieves uniformly distributed temperature measurement on the outer end face, displays historical trends via PLC control, and adds an alarm function. Compared to traditional manual measurement, this not only enables real-time, uninterrupted monitoring of the temperature at specific points on the outer end face of the furnace, reducing the workload of manual temperature measurement, but also triggers audible and visual alarms and an emergency stop device via PLC control when the hourly temperature rise at a measurement point exceeds a certain threshold. Furthermore, by viewing historical trends, the temperature change trends at each measurement point can be understood, thereby determining the possibility of leakage at each point. Attached Figure Description

[0011] Figure 1 This is a side view of the mounting position of the magnetic thermocouple patch of this utility model; Figure 2 This is a bottom view of the mounting position of the magnetic thermocouple patch of this utility model; Figure 3 This is the electrical wiring diagram for this utility model.

[0012] In the diagram: 1. Aluminum smelting furnace; 2. Magnetic thermocouple patch; 3. PLC control equipment; 4. Host computer; 5. Audible and visual alarm; 6. Equipment emergency stop device. Detailed Implementation

[0013] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0014] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0015] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0016] 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.

[0017] Please see Figure 1-3 The present invention provides an embodiment of a temperature measuring device for the bottom of an aluminum smelting furnace, comprising an aluminum smelting furnace 1, a magnetic thermocouple patch 2, a PLC control device 3, a host computer 4, an audible and visual alarm 5, and an emergency stop device 6. The magnetic thermocouple patch 2 is magnetically attached to the outer end face of the aluminum smelting furnace 1. The magnetic thermocouple patch 2 is electrically connected to the PLC control device 3. The PLC control device 3 is electrically connected to the host computer 4. The PLC control device 3 is electrically connected to the audible and visual alarm 5. The PLC control device 3 is electrically connected to the emergency stop device 6.

[0018] Furthermore, the magnetic thermocouple patches 2 are evenly distributed on the outer end face of the aluminum smelting furnace 1, which enables temperature measurement at evenly distributed points on the surface of the aluminum smelting furnace 1, making the measurement data more accurate.

[0019] Furthermore, the magnetic thermocouple patch 2 transmits the temperature signal from the outer end face of the aluminum smelting furnace 1 to the PLC control device 3. The PLC control device 3 monitors the temperature of each measuring point in real time through the built-in AI chip, and judges the leakage situation of each measuring point by the temperature change trend of each measuring point, making the overall equipment safer to use.

[0020] Furthermore, the PLC control device 3 includes a PLC controller and a host computer 4 display device. The PLC control system built into the PLC control device 3 includes an analog input module and a digital output module, which can realize the acquisition of temperature signals of all magnetic thermocouple patches 2 and the output of alarm signals. The host computer 4 displays the temperature signals and historical trends of the measuring points of the magnetic thermocouple patches 2 and can set the alarm preset for the temperature rise value per unit hour.

[0021] Furthermore, when the PLC control device 3 detects that the temperature rise of the magnetic thermocouple patch 2 measuring point exceeds the alarm setting value on the upper computer 4 screen, the PLC control device 3 controls the audible and visual alarm 5 to perform an audible and visual alarm. When the PLC control device 3 detects that the temperature of the magnetic thermocouple patch 2 measuring point exceeds the maximum temperature alarm value, the PLC control device 3 will control the equipment emergency stop device 6 to perform an emergency power-off stop of the equipment.

[0022] Working principle: First, the measurement spacing and number of measuring points are determined according to the size of the aluminum smelting furnace. Then, following the principle of uniform distribution, each magnetic thermocouple patch is installed at a fixed interval. Next, the number of analog input modules for the PLC control equipment is determined based on the number of measuring points. Finally, all thermocouple patch temperature signals are connected to the PLC control system via lines. During equipment operation, if the PLC control equipment detects that the temperature rise of a magnetic thermocouple patch measuring point exceeds the alarm set value on the host computer screen per hour, the PLC control equipment will activate the audible and visual alarm. If the PLC control equipment detects that the temperature of a magnetic thermocouple patch measuring point exceeds the maximum temperature alarm value, the PLC control equipment will activate the emergency stop device to stop the equipment.

[0023] The above description is merely an embodiment of this utility model, and common knowledge regarding specific structures and characteristics is not described in detail here. It will be apparent to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A temperature measuring device for the bottom of an aluminum smelting furnace, comprising an aluminum smelting furnace (1), a magnetic thermocouple patch (2), a PLC control device (3), a host computer (4), an audible and visual alarm (5), and an emergency stop device (6), characterized in that: The outer end face of the aluminum smelting furnace ((1)) is magnetically attached to a magnetic thermocouple patch (2), the magnetic thermocouple patch (2) is electrically connected to a PLC control device (3), the PLC control device (3) is electrically connected to a host computer (4), the PLC control device (3) is electrically connected to an audible and visual alarm (5), and the PLC control device (3) is electrically connected to an emergency stop device (6).

2. The aluminum smelting furnace bottom temperature measuring device according to claim 1, characterized in that: The magnetic thermocouple patch (2) is evenly distributed on the outer end face of the aluminum smelting furnace (1).

3. The aluminum smelting furnace bottom temperature measuring device according to claim 2, characterized in that: The magnetic thermocouple patch (2) transmits the temperature signal of the outer end face of the aluminum smelting furnace (1) to the PLC control device (3). The PLC control device (3) monitors the temperature of each measuring point in real time through the built-in AI chip, and judges the leakage situation of each measuring point by the temperature change trend of each measuring point.

4. The aluminum smelting furnace bottom temperature measuring device according to claim 1, characterized in that: The PLC control device (3) includes a PLC controller and a host computer (4) display device. The PLC control system built into the PLC control device (3) includes an analog input module and a digital output module, which can realize the acquisition of temperature signals of all magnetic thermocouple patches (2) and the output of alarm signals. The host computer (4) displays the temperature signals and historical trends of the magnetic thermocouple patches (2) measuring points and can set the alarm preset for the temperature rise value per unit hour.

5. The aluminum smelting furnace bottom temperature measuring device according to claim 4, characterized in that: When the PLC control device (3) detects that the temperature rise of the magnetic thermocouple patch (2) measuring point is greater than the alarm setting value on the screen of the host computer (4), the PLC control device (3) controls the sound and light alarm (5) to perform a sound and light alarm. When the PLC control device (3) detects that the temperature rise of the magnetic thermocouple patch (2) measuring point is greater than the highest temperature alarm value, the PLC control device (3) will control the equipment emergency stop device (6) to perform an emergency power-off stop of the equipment.

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