Temperature control system of molten salt furnace

Abstract

The utility model discloses a temperature control system for a molten salt furnace, relates to the field of crystal preparation, and aims to solve the problem that in the prior art, accurate control of the temperature in the molten salt furnace is crucial in the crystal growth process. A traditional temperature control system often has the problems of low response speed, low control precision and the like, and the problem that high requirements of crystal growth on temperature stability and precision are difficult to meet is solved. A high-precision temperature sensor, a pressure sensor, a cooling device and a heating element are arranged in the molten salt furnace, the outside of the molten salt furnace is connected with an intelligent control unit and a high-response-speed power adjusting module, and the intelligent control unit is connected with a man-machine operation terminal.

Description

Technical Field

[0001] The utility model relates to the field of crystal preparation, in particular to a molten salt furnace temperature control system. Background Art

[0002] LBO crystal preparation refers to the process of converting high-purity raw materials into single crystals with excellent optical properties through a series of delicate process steps. This process usually involves the mixing, melting, introduction of seed crystals, and the slow growth of crystals by controlling the temperature gradient and the crystal rotation speed. Specifically, LBO crystal preparation requires the selection of appropriate flux to lower the melting point of LBO, and the precise control of the heating and cooling process in the crystal growth furnace to ensure that the melt is uniformly crystallized on the seed crystal, and finally obtain high-quality single crystals. During the preparation process, attention should be paid to multiple key parameters, such as raw material purity, flux ratio, melting temperature, holding time, cooling rate, and crystal rotation speed, which will directly affect the quality and performance of the crystal. As an excellent nonlinear optical material, LBO crystal has broad application prospects in laser technology, optical communications, medical equipment and other fields. Therefore, high-quality LBO crystal preparation is of great significance to promote the development of related technologies.

[0003] For example, application publication number CN 114262933 A, a method for growing boron 10-LBO crystals, belongs to the technical field of crystal preparation. The present invention uses lithium carbonate and boric acid-10 as raw materials, molybdenum trioxide and tungsten trioxide as fluxes, and after heating and melting in a crystal growth furnace, adds seed crystals, and obtains boron 10-LBO crystals through cooling and growth. The present invention solves the problem that boron 10-LBO crystals are easy to crack, because when molybdenum oxide-tungsten oxide is used as a new type of flux, the melt viscosity is small, which is convenient for material flow and mass transfer, and grows high-quality boron 10-LBO crystals that are not easy to crack. The boron 10-LBO crystals obtained using the crystal growth method of the present invention can be used as crystal materials for neutron detection to meet the current needs of neutron scattering detectors.

[0004] During the crystal growth process, it is crucial to accurately control the temperature in the molten salt furnace. Traditional temperature control systems often have problems such as slow response speed and low control accuracy, and it is difficult to meet the high requirements of crystal growth for temperature stability and accuracy. Therefore, the market urgently needs to develop a molten salt furnace temperature control system to help people solve existing problems. Utility Model Content

[0005] The purpose of the utility model is to provide a molten salt furnace temperature control system to solve the problem that it is crucial to accurately control the temperature in the molten salt furnace during crystal growth as mentioned in the above background technology. Traditional temperature control systems often have problems such as slow response speed and low control accuracy, and it is difficult to meet the high requirements of crystal growth on temperature stability and accuracy.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a molten salt furnace temperature control system, comprising a molten salt furnace, wherein a high-precision temperature sensor, a pressure sensor, a cooling device and a heating element are arranged inside the molten salt furnace, and an intelligent control unit and a high-response speed power regulation module are connected to the outside of the molten salt furnace, and the intelligent control unit is connected to a man-machine operation terminal.

[0007] Preferably, the human-machine operation terminal and the intelligent control unit are connected by a communication line.

[0008] Preferably, the intelligent control unit has a built-in high-performance microprocessor, and the high-response speed power regulation module uses an IGBT power electronic device.

[0009] Preferably, the high response speed power regulation module and the intelligent control unit are connected by a communication line.

[0010] Preferably, the high-precision temperature sensor is embedded in the molten salt furnace, and the high-precision temperature sensor and the intelligent control unit are connected by a high-temperature resistant cable.

[0011] Preferably, the intelligent control unit and the pressure sensor are connected by a high temperature resistant signal line.

[0012] Preferably, the high response speed power regulating module is connected to the heating element by a high temperature resistant power line, and the high response speed power regulating module is connected to the cooling device by a high temperature resistant power line.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In this utility model, the temperature control system of the molten salt furnace adopts a high-precision temperature sensor, which is specially optimized for the high temperature range of 850℃ to 950℃ required for crystal growth, and realizes accurate and real-time monitoring of the temperature in the furnace. This high-precision monitoring reduces the temperature fluctuations and measurement errors in traditional systems, ensuring the accuracy of temperature control. At the same time, the fast response characteristics enable the system to quickly adjust the heating power to adapt to temperature changes in the process, thereby reducing the impact of temperature fluctuations on product quality.

[0015] 2. In this utility model, the molten salt furnace temperature control system has a built-in high-performance microprocessor and is combined with a pre-programmed PID control. Combined with the high-performance microprocessor and PID control algorithm of the intelligent control unit, the system can quickly respond to temperature changes and achieve rapid and accurate temperature regulation. This intelligent control strategy improves the automation and stability of the system and reduces the need for manual intervention. At the same time, predictive control can respond to potential temperature fluctuations in advance to ensure the continuity and stability of the process.

[0016] 3. In this utility model, the molten salt furnace temperature control system adopts a high-response speed power regulation module, which uses IGBT power electronic devices to achieve precise power regulation of the heating element, so that the system can quickly respond to temperature changes, adjust the heating power, and improve the accuracy and stability of temperature control. At the same time, the module also has multiple protection mechanisms such as overcurrent, overvoltage, and overheating, which effectively prevents equipment damage and safety accidents caused by abnormal conditions, and improves the reliability and safety of the system. This design ensures the stable operation of the molten salt furnace temperature control system in harsh environments such as high temperature and high pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a connection diagram of the temperature control system of the molten salt furnace of the utility model;

[0018] Figure 2 This is the control circuit diagram of the utility model;

[0019] Figure 3 This is a control flow chart of the utility model.

[0020] In the figure: 1. Molten salt furnace; 2. High-precision temperature sensor; 3. Pressure sensor; 4. Heating element; 5. Cooling device; 6. Intelligent control unit; 7. High-response speed power regulation module; 8. Human-machine operation terminal. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] See also Figure 1-3 The utility model provides an embodiment: a molten salt furnace temperature control system, including a molten salt furnace 1, wherein a high-precision temperature sensor 2, a pressure sensor 3, a cooling device 5 and a heating element 4 are arranged inside the molten salt furnace 1, and an intelligent control unit 6 and a high-response speed power regulation module 7 are connected to the outside of the molten salt furnace 1, and the intelligent control unit 6 is connected to a man-machine operation terminal 8.

[0023] Furthermore, the human-machine operation terminal 8 and the intelligent control unit 6 are connected by a communication line. The operator inputs the set interval temperature C through the human-machine operation terminal 8, and can also check the system status and perform other necessary operations. It provides an intuitive and easy-to-use interface, allowing the user to conveniently monitor and control the temperature control system of the molten salt furnace 1.

[0024] Furthermore, the intelligent control unit 6 has a built-in high-performance microprocessor. The intelligent control unit 6 combines PID control to compare the data detected in real time by the high-precision temperature sensor 2 with the set interval temperature C. The high-response speed power regulation module 7 uses IGBT power electronic devices. The high-response speed power regulation module 7 has multiple protection mechanisms such as overcurrent, overvoltage, and overheating.

[0025] Furthermore, the high response speed power regulation module 7 and the intelligent control unit 6 are connected by a communication line. When the real-time detection data is greater than the interval temperature C, the intelligent control unit 6 transmits a cooling signal to the high response speed power regulation module 7. When the real-time detection data is less than the interval temperature C, the intelligent control unit 6 transmits a heating signal to the high response speed power regulation module 7.

[0026] Furthermore, the high-precision temperature sensor 2 is embedded in the molten salt furnace 1, and the high-precision temperature sensor 2 and the intelligent control unit 6 are connected by a high-temperature resistant cable. The high-precision temperature sensor 2 is arranged in the molten salt furnace 1, so that the high-precision temperature sensor 2 performs real-time temperature monitoring and transmits the real-time detected data to the intelligent control unit 6 for analysis and processing.

[0027] Furthermore, the intelligent control unit 6 and the pressure sensor 3 are connected by a high temperature resistant signal line to monitor the pressure in the molten salt furnace 1 and transmit the real-time detected data to the intelligent control unit 6 for analysis and processing.

[0028] Furthermore, the high-response speed power regulation module 7 and the heating element 4 are connected by a high-temperature resistant power line, and the high-response speed power regulation module 7 and the cooling device 5 are connected by a high-temperature resistant power line. After receiving the cooling signal, the high-response speed power regulation module 7 controls the cooling device 5 to cool the molten salt furnace 1. After receiving the heating signal, the high-response speed power regulation module 7 controls the heating element 4 to heat the molten salt furnace 1.

[0029] Working principle: When in use, the operator inputs the set interval temperature C through the human-machine operation terminal 8. The human-machine operation terminal 8 is connected to the intelligent control unit 6 through a stable communication line to ensure the immediate and accurate transmission of the command. The intelligent control unit 6 has a built-in high-performance microprocessor as the core control component of the system. The high-precision temperature sensor 2 is embedded in the molten salt furnace 1 and is closely connected to the intelligent control unit 6 through a high-temperature resistant cable. It detects the temperature in the furnace in real time and transmits the data to the intelligent control unit 6 for analysis and processing. This connection method ensures that the temperature data can be transmitted stably and accurately even in a high-temperature environment. At the same time, the pressure sensor 3 is also connected to the intelligent control unit 6 through a high-temperature resistant signal line to monitor the pressure in the furnace in real time, providing important data support for the safe operation of the system. The intelligent control unit 6 combines the PID control algorithm to compare the real-time temperature data transmitted by the high-precision temperature sensor 2 with the set temperature interval C. According to the comparison result, the intelligent control unit 6 sends a corresponding control signal to the high-response speed power regulation module 7. The high-response-speed power regulation module 7 and the intelligent control unit 6 are also connected by a communication line to ensure fast and accurate signal transmission. The high-response-speed power regulation module 7 uses IGBT power electronic devices inside, which have high response speed and multiple protection mechanisms (overcurrent, overvoltage, overheating, etc.). When receiving a cooling signal, it quickly controls the cooling device 5 to work through the high-temperature resistant power line to cool the molten salt furnace 1; when receiving a heating signal, it controls the heating element 4 to work, and provides heat to the molten salt furnace 1 through the high-temperature resistant power line to perform heating operations, thereby achieving real-time and accurate control of the temperature of the molten salt furnace 1, and providing system status feedback to the operator through the human-machine operation terminal 8 to ensure the safe and efficient operation of the molten salt furnace 1.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A molten salt furnace temperature control system, comprising a molten salt furnace (1), characterized in that: The molten salt furnace (1) is provided with a high-precision temperature sensor (2), a pressure sensor (3), a cooling device (5) and a heating element (4) inside, and the molten salt furnace (1) is externally connected with an intelligent control unit (6) and a high-response speed power adjustment module (7), and the intelligent control unit (6) is connected to a man-machine operation terminal (8).

2. The molten salt furnace temperature control system according to claim 1, characterized in that: The human-machine operation terminal (8) and the intelligent control unit (6) are connected via a communication line.

3. The molten salt furnace temperature control system according to claim 1, characterized in that: The intelligent control unit (6) has a built-in high-performance microprocessor, and the high-response speed power regulation module (7) uses an IGBT power electronic device.

4. The molten salt furnace temperature control system according to claim 1, characterized in that: The high response speed power regulating module (7) and the intelligent control unit (6) are connected via a communication line.

5. The molten salt furnace temperature control system according to claim 1, characterized in that: The high-precision temperature sensor (2) is embedded in the molten salt furnace (1), and the high-precision temperature sensor (2) and the intelligent control unit (6) are connected by a high-temperature resistant cable.

6. The molten salt furnace temperature control system according to claim 1, characterized in that: The intelligent control unit (6) and the pressure sensor (3) are connected by a high temperature resistant signal line.

7. The molten salt furnace temperature control system according to claim 1, characterized in that: The high response speed power regulating module (7) and the heating element (4) are connected by a high temperature resistant power line, and the high response speed power regulating module (7) and the cooling device (5) are connected by a high temperature resistant power line.

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