An alloy melting temperature measuring device

Abstract

The utility model discloses an alloy melting temperature measuring device belongs to lead -acid battery alloy detection technical field. It mainly solves the existing measuring device and has the problems such as complicated structure, inconvenient operation, long time -consuming and high cost in the measurement process. Its main features are: by heating module, cooling module, temperature sensing module, lifting driving part and control system constitute, wherein, temperature sensing module sets up in the crucible, and upper end is connected with lifting driving part, heating module sets up in the crucible periphery, cooling module sets up in the crucible periphery, heating module, cooling module, temperature sensing module and lifting driving part are connected with control system electricity. The utility model has the characteristics of simple structure, convenient and fast measurement, high measurement precision and low cost, and is mainly used for measuring the temperature of alloy molten liquid in the crucible.

Description

Technical Field

[0001] This utility model belongs to the field of lead-acid battery alloy testing technology, specifically relating to a device for measuring the melting temperature of alloy materials used in lead-acid battery production. Background Technology

[0002] Accurate measurement of the melting temperature of alloys is crucial in their research and development and production. It directly affects the quality and performance of the alloy, as well as the optimization of the production process. Currently, there are various devices and methods available for measuring the temperature of molten metals or alloys.

[0003] Some existing devices use thermocouples for temperature measurement, such as some high-temperature thermocouple assemblies, which sense temperature changes by immersing the thermocouple protection tube in molten metal. However, these devices have some problems. For example, the protection tube is susceptible to dissolution and oxidation corrosion when in prolonged contact with molten metal, leading to a shortened lifespan and reduced measurement accuracy. In high-temperature and highly corrosive environments, ordinary thermocouple protection tubes may be damaged in a short time, making it impossible to continuously and accurately measure temperature.

[0004] Some methods employ fiber optic measurements, immersing an optical fiber surrounded by a metal tube into molten metal. The fiber receives thermal radiation and transmits it to a detector to measure temperature. However, in this method, the fiber is prone to devitrification at high temperatures, affecting measurement accuracy. Moreover, in practice, fiber optic installation and maintenance are complex and costly. For example, in some applications, fiber damage necessitates frequent replacements, increasing production costs and operational complexity.

[0005] Furthermore, some existing devices are complex in structure, inconvenient to operate, and time-consuming in the measurement process. For example, some devices requiring cumbersome calibration procedures not only increase the workload of operators but may also lead to increased measurement errors due to inaccurate calibration. In the production field, time is money, and this time-consuming measurement method is not conducive to quickly adjusting production processes and affects production efficiency.

[0006] Therefore, developing an alloy melting temperature measuring device that is convenient, fast, accurate, simple in structure, and low in cost is of great practical significance. Utility Model Content

[0007] This invention aims to solve the problems of low accuracy in measuring alloy melting temperature, poor corrosion resistance, cumbersome operation, and inability to simultaneously acquire temperature data throughout the melting-solidification process in existing technologies. Through an integrated measurement device, it achieves automated, accurate, and efficient measurement of alloy melting temperature, providing reliable data support for optimizing the production process of alloy materials for lead-acid batteries.

[0008] The technical solution of this utility model is: an alloy melting temperature measuring device for measuring the temperature of molten alloy in a crucible, characterized in that it comprises a heating module, a cooling module, a temperature sensing module, a lifting drive component, and a control system; wherein, the temperature sensing module is disposed inside the crucible and its upper end is connected to the lifting drive component; the heating module is disposed around the crucible; the cooling module is disposed around the crucible; and the heating module, cooling module, temperature sensing module, and lifting drive component are electrically connected to the control system.

[0009] The temperature sensing module in the technical solution of this utility model includes an armored thermocouple and a protective sleeve; the measuring end of the armored thermocouple is wrapped inside the protective sleeve and connected to the control system through a signal line; the upper end of the protective sleeve is connected to the lifting drive component.

[0010] The protective sleeve described in the technical solution of this utility model is a corrosion-resistant protective sleeve composed of a zirconia ceramic inner layer and a Hastelloy outer layer.

[0011] The protective sleeve described in the technical solution of this utility model is a corrosion-resistant protective sleeve composed of a silicon nitride ceramic inner layer and an nconel 625 alloy outer layer.

[0012] The heating module in the technical solution of this utility model includes a heating coil and a power regulator; the heating coil is wrapped around the outside of the crucible; the power regulator is connected to the upper and lower ends of the heating coil through wires and to the control system through signal lines.

[0013] In the technical solution of this utility model, the heating coil is wrapped around the middle and upper parts of the crucible.

[0014] The cooling module in the technical solution of this utility model includes a circulating water cooling jacket, a flow control valve, and a water tank; the circulating water cooling jacket surrounds the outside of the crucible; the water inlet of the circulating water cooling jacket is connected to the flow control valve through a pipeline, the water outlet is connected to the water tank through a pipeline, the water tank is connected to the flow control valve through a pipeline, and the flow control valve is connected to the control system through a signal line.

[0015] In the technical solution of this utility model, the circulating water cooling sleeve is located around the lower part of the crucible.

[0016] The control system described in the technical solution of this utility model is a PLC control system.

[0017] The lifting drive component in the technical solution of this utility model includes a servo motor, a ball screw, a connecting bracket, and a linear guide rail; wherein, the servo motor drives the ball screw through a coupling and is connected to the control system through a signal line, the ball screw is connected to the connecting bracket through a ball screw nut, and the connecting bracket is connected to the upper end of the temperature sensor module.

[0018] This invention employs an alloy melting temperature measuring device comprised of a heating module, a cooling module, a temperature sensing module, a lifting drive, and a control system. The temperature sensing module is located inside the crucible and its upper end is connected to the lifting drive. The heating module and cooling module are located around the crucible. The heating module, cooling module, temperature sensing module, and lifting drive are electrically connected to the control system. Therefore, when measuring the temperature of the molten alloy inside the crucible, the alloy sample is placed in the crucible, and the lifting drive inserts the measuring end of the temperature sensing module into the center of the sample. The control system sets the heating termination temperature (higher than the estimated melting temperature), the cooling initiation temperature (lower than the estimated solidification temperature), and the heating rate. Heating module 1... Upon startup, the sample is heated, and the control system records the temperature-time curve in real time. Once the sample has completely melted and stabilized, the cooling module is activated, and the control system controls the cooling to begin at a constant rate. The control system continuously records temperature changes and analyzes the curve using algorithms to automatically mark the liquidus temperature (the starting point of the temperature plateau during melting) and the solidus temperature (the ending point of the temperature plateau during solidification), which represent the alloy melting temperature range. After measurement, the lifting drive component resets the temperature sensing module, and the control system saves the data, which can be viewed or exported.

[0019] This invention features a simple structure, convenient and quick measurement, high measurement accuracy, and low cost. It is mainly used to measure the temperature of molten alloy in a crucible. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a cross-sectional schematic diagram of the armored thermocouple of this utility model.

[0022] In the diagram: 11-Crucible; 12-Heating coil; 13-Power regulator; 21-Circulating water cooling jacket; 22-Flow control valve; 23-Water tank; 31-Sheathed thermocouple; 321-Hastelloy outer layer; 322-Zirconium oxide ceramic inner layer; 32-Protective sleeve; 33-Lifting drive component; 321-Servo motor; 322-Ball screw; 323-Connecting bracket; 324-Linear guide rail; 34-PLC control system. Detailed Implementation

[0023] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings of this specification are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of implementation of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this utility model, should still fall within the scope of the technical content disclosed in this utility model. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of implementation of this utility model.

[0024] like Figure 1 , Figure 2 As shown, one embodiment of the alloy melting temperature measuring device of this utility model consists of a heating module, a cooling module, a temperature sensing module, a lifting drive component 33, and a PLC control system 34, and is used to measure the temperature of the alloy molten liquid in the crucible 11.

[0025] The heating module includes a heating coil 12 and a power regulator 13. The heating coil 12 surrounds the middle and upper parts of the crucible 11. The power regulator 13 is connected to the upper and lower ends of the heating coil 12 via wires and to a PLC control system 34 via signal lines. The PLC control system 34 controls the power regulator 13 to adjust the heating rate (adjustable from 0-50℃ / min) to achieve uniform heating of the alloy sample. The heating module can be replaced with resistance wire heating, with temperature and rate control achieved through the power regulator.

[0026] The cooling module includes a circulating water cooling jacket 21, a flow control valve 22, and a water tank 23. The circulating water cooling jacket 21 surrounds the lower third of the crucible 11. The inlet of the circulating water cooling jacket 21 is connected to the flow control valve 22 via a pipe, and the outlet is connected to the water tank 23 via a pipe. The water tank 23 is connected to the flow control valve 22 via a pipe. The flow control valve 22 is connected to a PLC control system 34 via a signal line. The PLC control system 34 controls the flow control valve 22 to adjust the cooling water flow rate (0-2 L / min), achieving controllable cooling of the alloy sample (cooling rate adjustable from 0-30℃ / min). The cooling module can be replaced with air cooling, with temperature rate control achieved by adjusting the airflow.

[0027] The temperature sensing module includes an armored thermocouple 31 and a protective sleeve 32. The measuring end of the armored thermocouple 31 is encased within the protective sleeve 32. The armored thermocouple 31 is connected to the PLC control system 34 via a signal line for real-time temperature data acquisition. The protective sleeve 32 is a corrosion-resistant sleeve composed of a zirconia ceramic inner layer 321 and a Hastelloy alloy outer layer 322, achieving corrosion resistance and insulation under high-temperature environments to ensure the accuracy of thermocouple measurements. Alternatively, the protective sleeve 32 can also be a corrosion-resistant sleeve composed of a silicon nitride ceramic inner layer and an nconel 625 alloy outer layer, achieving the same high-temperature resistance and corrosion resistance.

[0028] The lifting drive component 33 includes a servo motor 331, a ball screw 332, a connecting bracket 333, and a linear guide rail 334. The servo motor 331 is connected to the PLC control system 34 via a signal line. The ball screw 332 is connected to the connecting bracket 333 via a ball screw nut. The connecting bracket 333 is connected to the upper end of the protective sleeve 32. The PLC control system 34 controls the rotation of the servo motor 331, which drives the ball screw 332 to rotate via a coupling. The ball screw nut causes the connecting bracket 333 to move vertically along the linear guide rail 334, thereby causing the temperature sensor module to move vertically as a whole, achieving contact or separation between the armored thermocouple 31 and the alloy sample.

[0029] The PLC control system 34 incorporates a temperature curve analysis algorithm, which can automatically identify the liquidus temperature during melting and the solidification temperature during solidification without manual intervention. The PLC control system 34 has a storage unit for saving measurement data and curves. The PLC control system 34 is existing technology. The heating and cooling modules are linked and controlled by the PLC control system 34, achieving precise adjustment of heating and cooling rates (0-50℃ / min and 0-30℃ / min) to adapt to the thermal characteristics of different alloys. The temperature curve analysis algorithm can use a machine learning model to replace the traditional threshold analysis algorithm, optimizing the accuracy of melting temperature identification through training samples.

[0030] Steps for measuring the temperature of the molten alloy in the crucible:

[0031] 1. Place the alloy sample into the crucible 11, and use the lifting drive 33 to insert the measuring end of the armored thermocouple 31 located inside the protective sleeve 32 into the center of the sample along with the protective sleeve 32.

[0032] 2. The PLC control system 34 sets the heating termination temperature (higher than the estimated melting temperature), the cooling start temperature (lower than the estimated solidification temperature), and the heating rate (controls the power regulator 13). The heating module starts, the induction heating coil 12 heats the sample, and the PLC control system 34 records the temperature-time curve in real time.

[0033] 3. Once the sample has completely melted and stabilized, the cooling module is activated. The PLC control system 34 controls the opening of the flow control valve 22, and the circulating water cooling jacket 21 begins to cool down at a constant rate. The PLC control system 34 continuously records the temperature changes.

[0034] 4. The PLC control system 34 analyzes the curve through algorithms and automatically marks the liquidus temperature (the starting point of the temperature plateau during melting) and the solidus temperature (the ending point of the temperature plateau during solidification), which is the alloy melting temperature range.

[0035] 5. After the measurement is completed, the lifting drive 33 drives the armored thermocouple 31 and the protective sleeve 32 to reset, and the PLC control system 34 saves the data, which can be viewed or exported.

Claims

1. An alloy melt temperature measuring device for measuring the temperature of an alloy melt in a crucible (11), characterized by: It consists of a heating module, a cooling module, a temperature sensing module, a lifting drive (33), and a control system; wherein, the temperature sensing module is set inside the crucible (11) and its upper end is connected to the lifting drive (33); the heating module is set around the crucible (11); the cooling module is set around the crucible (11); the heating module, cooling module, temperature sensing module, and lifting drive (33) are electrically connected to the control system.

2. An alloy melt temperature measuring device according to claim 1, characterised in that: The temperature sensing module includes an armored thermocouple (31) and a protective sleeve (32); the measuring end of the armored thermocouple (31) is wrapped inside the protective sleeve (32) and connected to the control system through a signal line; the upper end of the protective sleeve (32) is connected to the lifting drive component (33).

3. An alloy melt temperature measuring device according to claim 2, characterised in that: The protective sleeve (32) is a corrosion-resistant protective sleeve composed of a zirconia ceramic inner layer (321) and a Hastelloy outer layer (322).

4. The alloy melt temperature measuring device of claim 2, wherein: The protective sleeve (32) is a corrosion-resistant protective sleeve composed of a silicon nitride ceramic inner layer and an nconel 625 alloy outer layer.

5. An alloy melt temperature measuring device according to any one of claims 1 to 4, characterised in that: The heating module includes a heating coil (12) and a power regulator (13); the heating coil (12) is surrounded around the outside of the crucible (11); the power regulator (13) is connected to the upper and lower ends of the heating coil (12) by wires and to the control system by signal lines.

6. An alloy melt temperature measuring device according to claim 5, characterised in that: The heating coil (12) is surrounded around the middle and upper part of the crucible (11).

7. An alloy melt temperature measuring device according to any one of claims 1 to 4, 6 wherein: The cooling module includes a circulating water cooling jacket (21), a flow control valve (22), and a water tank (23); the circulating water cooling jacket (21) surrounds the outside of the crucible (11); the water inlet of the circulating water cooling jacket (21) is connected to the flow control valve (22) through a pipeline, and the water outlet is connected to the water tank (23) through a pipeline; the water tank (23) is connected to the flow control valve (22) through a pipeline; and the flow control valve (22) is connected to the control system through a signal line.

8. An alloy melt temperature measuring device according to claim 7, characterised in that: The circulating water cooling jacket (21) is wrapped around the lower part of the outer periphery of the crucible (11).

9. An alloy melting temperature measuring device according to any one of claims 1-4, 6, and 8, characterized in that: The control system is a PLC control system (34).

10. The alloy melt temperature measuring device of any of claims 1-4, 6, 8, wherein: The lifting drive component (33) includes a servo motor (331), a ball screw (332), a connecting bracket (333), and a linear guide rail (334). The servo motor (331) drives the ball screw (332) through a coupling and is connected to the control system through a signal line. The ball screw (332) is connected to the connecting bracket (333) through a ball screw nut. The connecting bracket (333) is connected to the upper end of the temperature sensor module.

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