Vacuum temperature measuring device for Joule thermosynthetic material

Abstract

The utility model provides a vacuum temperature measuring device for Joule thermosynthetic materials, which comprises a box body (15), a box door (14) arranged on the front surface of the box body (15), a pressure gauge (2) arranged above the box body (15) and an air inlet and outlet structure, a direct current power box is fixed on the side wall of the box body, and the output end of the direct current power box is respectively connected with a positive electrode clamping mechanism (6) and a negative electrode clamping mechanism (7). A synthetic material heating structure is arranged in the box body (15), a round sheet (5) is embedded in a hole formed in the middle of the box door (14), and a thermal imager is arranged outside the box body. The device is simple in structure and convenient to use, can adapt to synthetic material samples with different sizes, and can effectively regulate and control material synthesis conditions by controlling current and voltage and monitoring temperature, so that Joule thermal synthesis of materials is realized.

Description

Technical Field

[0001] This utility model belongs to the field of vacuum temperature measuring box technology, specifically relating to a vacuum temperature measuring device for Joule thermal synthesis materials. Background Technology

[0002] Advances in materials science have spurred the rise of Joule thermal synthesis, a technique that leverages the heat generated by the electrical conduction of conductive materials to achieve rapid reactions, demonstrating great potential in the preparation of various materials. This process primarily involves temperature measurement technology, vacuum technology, and increasingly stringent environmental requirements for material synthesis. However, temperature control in this process is challenging. Traditional temperature measurement methods, such as thermocouples, are susceptible to electromagnetic interference, and resistance temperature detectors (RTDs) exhibit lag in response, failing to meet the high precision and rapid response demands of Joule thermal synthesis. Furthermore, the synthesis requires a vacuum environment to prevent material oxidation, and early vacuum equipment, such as mechanical vacuum pumps, had limited vacuum levels and inadequate sealing.

[0003] Today, with increasingly stringent requirements for the material synthesis environment, especially for novel and sensitive materials, it is urgent to develop a vacuum temperature measuring chamber adapted for Joule heating ultrafast synthesis, so as to ensure the quality of synthesized materials and help this technology to develop further in the field of materials science. Utility Model Content

[0004] In view of the problems existing in the prior art, the technical solution adopted by this utility model to solve the problems existing in the prior art is as follows:

[0005] A vacuum temperature measuring device for Joule heating of materials includes a housing 15, a door 14 on the front of the housing 15, a pressure gauge 2 and an inlet / outlet structure on the top of the housing 15, a DC power supply box fixed on the side wall of the housing, the output terminals of the DC power supply box being connected to a positive electrode clamping mechanism 6 and a negative electrode clamping mechanism 7 respectively, and a heating structure for the heating material being provided inside the housing 15. The heating structure includes a slide 20 disposed inside the vacuum temperature measuring housing 15, with fixed ends on the upper surface of the slide 20. There are two limiting blocks, and a slide rail 23 is provided between the two limiting blocks. Two high-temperature resistant ceramics A18 and B24 are provided on the slide rail 23. Double-layer copper sheets A19 and B25 are fixed on the two high-temperature resistant ceramics respectively. The composite material 22 is clamped and fixed by the two double-layer copper sheet structures. The double-layer copper sheets A19 and B25 are respectively connected to the positive electrode clamping mechanism 6 and the negative electrode clamping mechanism 7. A circular copper sheet 5 is embedded in the middle opening of the box door 14. A thermal imager is provided on the outside of the box.

[0006] The center of the synthetic material 22 inside the box needs to be aligned with the circular germanium sheet 5.

[0007] The thermal imager is aligned with the circular germanium sheet 5 at a height, and the temperature of the circular germanium sheet 5 is monitored by the thermal imager, thereby monitoring the ambient temperature of the synthesized material inside the box in real time.

[0008] The enclosure is also equipped with a display screen, and the thermal imager and DC power supply box are connected to the display screen, so that the display screen can display the monitored temperature and current and voltage in real time.

[0009] The air inlet and outlet structure includes two air extraction ports A8 and B11 connected to an external vacuum pump. The air extraction ports A8 and B11 are controlled to open and close by air extraction port opening and closing nuts A1 and B3, respectively.

[0010] The air inlet and outlet structure also includes an air inlet 9 and an air outlet 10, which are controlled to open and close by an air inlet opening and closing nut 16 and an air outlet opening and closing nut 17, respectively.

[0011] The slide rail 23 has a knob 21 at the rear end of one end that extends through a side limiting block. The slide rail 23 has a threaded structure on the outside. The high-temperature resistant ceramic A18 is fixedly mounted on the slide table. The bottom of the high-temperature resistant ceramic B24 has an internal thread that mates with the external thread of the slide rail. By rotating the slide rail with the knob 21, the position of the high-temperature resistant ceramic B24 on the slide table 20 can be adjusted, thereby adjusting the distance between the two high-temperature resistant ceramic sheets to accommodate synthetic materials of different sizes. The side of the slide table is also provided with a horizontal scale line, which can be used to visually measure the distance between the two high-temperature resistant ceramic sheets.

[0012] One side of the door 14 is connected to the box body via two hinges A12 and B13, and the other side of the door 14 has a buckle 4 on its outer wall to control the opening and closing of the door.

[0013] The box 5 is a cube structure made of acrylic material, which has good sealing and transparency.

[0014] The output current range of the DC power supply box is 0 to 100A.

[0015] This utility model has the following advantages:

[0016] 1. The device of this utility model has a simple structure, clear display, and convenient control. It controls the current and voltage between the copper sheets that hold the synthetic material through its own DC power supply box. The temperature of the synthetic material sample in the vacuum chamber is detected by a thermal imager through a circular germanium sheet on the door. The temperature change range of the sample environment is observed in real time through the display screen. The operation cycle of the DC power supply can be well controlled by modulating the parameters, which shortens the sample preparation time and greatly reduces the difficulty of the experiment.

[0017] 2. The device of this utility model uses two opposing high-temperature resistant ceramic structures, which makes the DC power supply less susceptible to damage, and the distance between the two high-temperature resistant ceramics can be adjusted to accommodate the size of different synthetic material samples. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of the vacuum temperature measuring device of this utility model;

[0019] Figure 2 This is a left-side view of the structure of the vacuum temperature measuring device of this utility model;

[0020] Figure 3 This is a top view schematic diagram of the structure of the vacuum temperature measuring device of this utility model;

[0021] Figure 4 This is a schematic diagram of the main structure of the composite material fixing device;

[0022] Figure 5 Left view schematic diagram of the structure of the composite material fixing device;

[0023] Figure 6 A top view of the structure of the composite material fixing device;

[0024] In the diagram: 1. Evacuation port opening / closing nut A; 2. Pressure gauge; 3. Evacuation port opening / closing nut B; 4. Fastener; 5. Circular germanium sheet; 6. Positive electrode clamping mechanism; 7. Negative electrode clamping mechanism; 8. Evacuation port A; 9. Air inlet; 10. Air outlet; 11. Evacuation port B; 12. Hinge A; 13. Hinge B; 14. Box body / door; 15. Box body; 16. Air inlet opening / closing nut; 17. Air outlet opening / closing nut; 18. High-temperature resistant ceramic A; 19. Double-layer copper sheet A; 20. Slide groove; 21. Knob; 22. Composite material; 23. Slide rail; 24. High-temperature resistant ceramic B; 25. Double-layer copper sheet B; 26. Slide table. Detailed Implementation

[0025] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings, such as... Figure 1-6 As shown, a vacuum temperature measuring device for Joule thermal synthesis materials includes a housing 15, a door 14 on the front of the housing 15, a pressure gauge 2 on the top of the housing 15, and an inlet / outlet structure. The housing 15 is a cubic structure made of acrylic material, providing good sealing and visibility. The inlet / outlet structure includes two extraction ports A8 and B11 connected to an external vacuum pump. The extraction ports A8 and B11 are controlled to open and close by extraction port opening / closing nuts A1 and B3, respectively. The inlet / outlet structure also includes an inlet port 9 and an outlet port 10, which are controlled to open and close by inlet port opening / closing nuts 16 and 17, respectively.

[0026] A DC power supply box is fixed on the side wall of the box. The output current range of the DC power supply box is 0 to 100A. The output terminals of the DC power supply box are respectively connected to the positive electrode clamping mechanism 6 and the negative electrode clamping mechanism 7. The box 15 is equipped with a composite material heating structure. The heating structure includes a slide table 20 set in the vacuum temperature measuring box 15. Two limit blocks are fixed at both ends of the upper surface of the slide table 20. A slide rail 23 is provided between the two limit blocks. Two high-temperature resistant ceramics A18 and B24 are set on the slide rail 23. Double-layer copper sheets A19 and B25 are respectively fixed on the two high-temperature resistant ceramics. The composite material 22 is clamped and fixed by the two double-layer copper sheet structures. The double-layer copper sheets A19 and B25 are respectively connected to the positive electrode clamping mechanism 6 and the negative electrode clamping mechanism 7.

[0027] One end of the slide rail 23 extends through a limit block on one side and a knob 21 is provided at the rear end. The slide rail 23 has a threaded structure on the outside. The high-temperature resistant ceramic A18 is fixedly mounted on the slide table. The bottom of the high-temperature resistant ceramic B24 has an internal thread that mates with the external thread of the slide rail. By rotating the slide rail with the knob 21, the position of the high-temperature resistant ceramic B24 on the slide table 20 can be adjusted, thereby adjusting the distance between the two high-temperature resistant ceramic sheets to accommodate synthetic materials of different sizes. The side of the slide table is also provided with a horizontal scale line, which can be used to visually measure the distance between the two high-temperature resistant ceramic sheets.

[0028] A circular germanium sheet 5 is embedded in the center of the door 14. A thermal imager is installed on the outside of the box. The center of the composite material 22 inside the box must be aligned with the circular germanium sheet 5, and the thermal imager must be aligned with the circular germanium sheet 5 at the same height. By monitoring the temperature of the circular germanium sheet 5, the ambient temperature of the composite material inside the box can be monitored in real time. A display screen is also installed on the outside of the box. The thermal imager and the DC power supply box are both connected to the display screen, so that the display screen can display the monitored temperature and current and voltage in real time. One side of the door 14 is connected to the box body by two hinges A12 and B13, and the other side of the door 14 has a buckle 4 on the outer wall to control the opening and closing of the door.

[0029] The working principle and process of this utility model device are as follows:

[0030] When using this vacuum temperature measuring chamber for Joule thermal synthesis of materials, the material sample to be synthesized is first placed in double-layer copper sheets A19 and B25, and the chamber door 14 is closed. Then, the vacuum pump is started and the evacuation nut A1 and evacuation nut B3 are opened to evacuate the air from the chamber 15 to the set vacuum level. The evacuation nut A1 and evacuation nut B3 and the vacuum pump are then closed. Next, the DC power supply is connected, and the output current and voltage are adjusted so that the current flows through the double-layer copper sheets A19 and B25 connected to the positive and negative clamping mechanisms 6 and 7, respectively. This generates Joule heat on the synthesized material 22, initiating the material synthesis reaction. During the synthesis process, a thermal imager measures the temperature inside the chamber in real time and transmits the temperature signal to the display screen for real-time monitoring. By controlling the current, voltage, and monitoring the temperature, the conditions for material synthesis can be precisely controlled, achieving the goal of Joule thermal ultrafast material synthesis.

[0031] Through the coordinated work of the above components, the vacuum temperature measuring chamber for Joule thermal synthesis of materials of this invention can effectively provide a stable vacuum environment, precise temperature measurement and control, and an efficient Joule thermal generation mechanism for material synthesis, meeting the ultrafast synthesis requirements of various materials and having important application value in materials science research and related industrial production fields.

[0032] The scope of protection of this utility model is not limited to the above-described embodiments. Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its scope and spirit. If these modifications and variations fall within the scope of the claims of this utility model and their equivalents, then the intent of this utility model also includes these modifications and variations.

Claims

1. A vacuum thermometry apparatus for Joule heat synthesis of a material, characterized by: The utility model relates to a kind of synthetic material heating structure, the heating structure includes the slide table (20) being arranged in the vacuum temperature measuring box box (15), the slide table (20) upper surface both ends are fixed with two limit blocks, two limit blocks are equipped with slide rail (23), slide rail (23) is provided with two high-temperature-resistant ceramic A (18) and high-temperature-resistant ceramic B (24), two high-temperature-resistant ceramic are respectively fixed with double-layer copper sheet A (19) and double-layer copper sheet B (25), by two double-layer copper sheet structure clamping fixed synthetic material (22), double-layer copper sheet A (19) and double-layer copper sheet B (25) are connected with positive pole clamping mechanism (6) and negative pole clamping mechanism (7) respectively, the round germanium sheet (5) is embedded in the aperture in the middle of the box door (14), and a thermal imager is provided outside the box.

2. A vacuum temperature measuring device for a joule heat synthesized material as recited in claim 1, characterized by: The center of the synthetic material (22) in the box needs to be aligned with the round germanium sheet (5).

3. A vacuum temperature measuring device for a joule heat synthesized material as recited in claim 1, wherein: The height of the thermal imager is aligned with the round germanium sheet (5).

4. A vacuum temperature measuring device for a joule heat synthesized material as recited in claim 1, wherein: The box is also provided with a display screen outside, and the thermal imager and the DC power supply box are connected with the display screen.

5. A vacuum temperature measuring device for a joule heat synthesized material as recited in claim 1, wherein: The air inlet and outlet structure includes two air extraction holes A (8) and B (11) connected with an external vacuum pump, and the air extraction holes A (8) and B (11) are controlled to open and close by air extraction hole opening and closing nuts A (1) and B (3) respectively.

6. A vacuum temperature measuring device for a joule heat synthesized material as recited in claim 1, wherein: The air inlet and outlet structure also includes an air inlet hole (9) and an air outlet hole (10), which are controlled to open and close by air inlet hole opening and closing nuts (16) and air outlet hole opening and closing nuts (17) respectively.

7. A vacuum temperature measuring device for a joule heat synthesized material as defined in claim 1, characterized by: One end of the slide rail (23) is provided with a knob (21) after penetrating out of the end part of one side limit block, the outer part of the slide rail (23) is a threaded structure, the high-temperature-resistant ceramic A (18) is fixedly arranged on the slide table, the high-temperature-resistant ceramic B (24) is provided with internal threads at the bottom, which are matched with the external threads of the slide rail, and the side surface of the slide table is also provided with horizontal scale lines.

8. A vacuum temperature measuring device for a joule heat synthesized material as defined in claim 1, characterized by: One side of the box door (14) is connected with the box by two hinges A (12) and B (13) above and below, and the other side of the box door (14) is provided with a buckle (4) on the outer wall.

9. A vacuum temperature measuring device for a joule heat synthesized material as defined in claim 1, wherein: The box (15) is a whole square structure, which is made of acrylic material.

10. A vacuum temperature measuring device for a joule heat synthesized material as defined in claim 1, characterized by: The output current range of the DC power supply box is 0-100 A.

Images