Sample control auxiliary device for superconducting resistance measurement experiment

Abstract

The utility model discloses a sample control auxiliary device for a superconducting resistance measurement experiment, which comprises a shell, a Dewar flask fixing base, a motor and a fixing rod base are arranged in the shell, a Dewar flask is arranged in the Dewar flask fixing base, the motor drives a lead screw to rotate, a fixing rod is arranged on the fixing rod base, and the fixing rod is connected with the Dewar flask fixing base. A lead screw nut is mounted on the lead screw, one end of the lead screw nut is connected with a lower connecting block, the other end of the lead screw nut is connected with a rotating shaft, a sample clamp is mounted at the rotating shaft, and the lower connecting block sleeves a fixed rod; a sample enters the Dewar flask and is immersed in low-temperature liquid through the motor to achieve cooling, the motor can control the speed of the sample entering the low-temperature liquid through speed regulation, and the depth of the sample entering the low-temperature liquid is controlled through starting and stopping of the motor.

Description

Technical Field

[0001] This utility model belongs to the technical field of physical experimental instruments, specifically relating to a sample control auxiliary device for superconducting resistance measurement experiments. Background Technology

[0002] High-temperature superconducting physics measurement experiments can provide in-depth understanding of the fundamental properties and physical mechanisms of high-temperature superconducting materials. Experimental results show that high-temperature superconducting materials exhibit excellent superconducting properties at liquid nitrogen temperatures, indicating broad application prospects. Simultaneously, the experiments also verified the importance of parameters such as critical temperature, critical magnetic field, and critical current of high-temperature superconducting materials, providing valuable references for the research and development of these materials.

[0003] Existing patent publication number CN209446640U discloses an auxiliary device for measuring the resistance of superconducting materials. It includes a base plate, a left support plate and a right support plate symmetrically fixed to the top of the base plate. A left insulating plate is fixed to the inner wall of the left support plate, and a left conductive plate is fixed to the outer right side of the left insulating plate. A right insulating plate is movably disposed on the right side of the left insulating plate, and a right conductive plate is fixed to the left side of the right insulating plate. The left and right conductive plates are arranged opposite each other, and a terminal is fixed to the top of each plate. A horizontal pushing device is fixed to the inner wall of the right support plate and is connected to the right insulating plate. The above-mentioned auxiliary device for measuring the resistance of superconducting materials has the following disadvantages in use: Since the resistance of superconducting materials is zero at certain low temperatures, the device is not easy to use when placing samples in low-temperature environments, especially in terms of sample handling and positioning. It also has poor operability for fixing and changing the position of the sample. Summary of the Invention

[0004] Based on the problems existing in the background technology, the purpose of this utility model is to design a sample control auxiliary device for superconducting resistance measurement experiments, which facilitates sample loading and unloading, realizes the speed and position of the sample entering the low-temperature liquid in the Dewar flask, and thus controls the temperature of the experimental sample. The whole process is simple to install and easy to operate.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A sample control auxiliary device for superconducting resistance measurement experiments includes a housing, a Dewar flask fixing base, a motor, and a fixing rod base. A Dewar flask is placed inside the Dewar flask fixing base. The motor drives a lead screw to rotate. A fixing rod is installed on the fixing rod base. A lead screw nut is installed on the lead screw. One end of the lead screw nut is connected to a lower connecting block, and the other end is connected to a rotating shaft. A sample clamp is installed at the rotating shaft. The lower connecting block is fitted onto the fixing rod.

[0007] Furthermore, the outer casing near the base of the Dewar flask is designed with a movable insert plate to facilitate the placement and removal of the Dewar flask.

[0008] Furthermore, a lead screw bearing is installed at the top of the lead screw, and the lead screw bearing is connected to an upper connecting block through an upper connecting rod. The upper connecting block is sleeved on a fixed rod, and the fixed rod and the connecting block provide support and fixation for the lead screw bearing, the sliding nut, and the lead screw.

[0009] Furthermore, one end of the lead screw nut is connected to the lower connecting block via the lower connecting rod, and the other end is connected to the rotating shaft via the side connecting rod.

[0010] Furthermore, the sample clamp has a clamp structure and is secured with fixing screws.

[0011] Furthermore, the base of the fixed rod is equipped with a motor control module and a display control module.

[0012] Furthermore, buttons and a display screen are installed on the outer casing to control the operation of the motor control module and display the output of the control module. There are four buttons on the outer casing: start / stop button, directional button, acceleration button, and deceleration button. The display screen can show the motor on / off status, motor speed, and sample lifting direction.

[0013] The above technical solution can achieve the following beneficial effects:

[0014] This invention uses a motor-driven lead screw to control the raising and lowering of the sample. The sample clamp's rotating shaft allows for 180-degree rotation, facilitating the loading and unloading of high-temperature superconducting samples. A side plate on the outer casing allows for easy loading and unloading of Dewar flasks containing cryogenic liquids. The Dewar flask base helps secure the flask, thus improving experimental safety.

[0015] The sample is immersed in the cryogenic liquid by a motor to achieve cooling. The speed at which the sample enters the cryogenic liquid can be controlled by speed adjustment, and the depth of the sample immersion in the cryogenic liquid can be controlled by starting and stopping the motor. Attached Figure Description

[0016] Figure 1 This is a front view of the present utility model;

[0017] Figure 2 This is a top view of the present invention;

[0018] Figure 3 This is a three-dimensional schematic diagram of the present invention.

[0019] In the picture:

[0020] 1. Outer shell; 2. Buttons; 3. Display screen; 4. Fixing rod; 5. Lower connecting block; 6. Upper connecting block; 7. Lower connecting rod; 8. Upper connecting rod; 9. Lead screw bearing; 10. Lead screw nut; 11. Lead screw; 12. Side connecting rod; 13. Rotating shaft; 14. Sample holder; 15. Insert plate; 16. Dewar flask fixing base; 17. Motor; 18. Fixing rod base; 19. Motor control module; 20. Display control module; 21. Fixing screw; 22. Sample; 23. Terminal block; 24. Dewar flask. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings:

[0022] like Figure 1-3 As shown, a sample control auxiliary device for superconducting resistance measurement experiments includes a housing 1, a Dewar flask fixing base 16 installed inside the housing, a movable insert plate 15 on the side of the housing near the Dewar flask fixing base for easy placement and removal of the Dewar flask, a motor 17, and a fixing rod base 18. A Dewar flask 24 is placed inside the Dewar flask fixing base 16. The motor drives a lead screw 11 to rotate. A fixing rod 4 is installed on the fixing rod base 18. A lead screw nut 10 is installed on the lead screw 11, and one end of the lead screw nut 10 is connected to a lower connecting rod. The lower connecting block 5 is connected to the upper connecting block 6 via a side connecting rod 12, and the other end is connected to the rotating shaft 13. A lead screw bearing 9 is installed on the top of the lead screw 11. The lead screw bearing 9 is connected to the upper connecting block 6 via an upper connecting rod 8. The upper connecting block 6 is fitted onto the fixed rod 4, and the other end is connected to the rotating shaft 13. A sample clamp 14 is installed at the rotating shaft 13. The lower connecting block 5 is fitted onto the fixed rod 4. The sample clamp 14 has a clamp structure and is fastened with a fixing screw 21. A motor control module 19 and a display control module 20 are provided inside the fixed rod base 18. Buttons 2 and a display screen 3 are installed on the outer casing for controlling the operation of the motor control module 19 and displaying the output of the display control module 20.

[0023] In the above embodiments, the fixed rod, connecting block, connecting rod, lead screw, lead screw bearing and lead screw nut constitute the lead screw assembly, and the sample clamp, rotating shaft, connecting rod and fixing screw constitute the sample clamp assembly.

[0024] There are four buttons on the outer casing: start / stop, turn, accelerate, and decelerate. There is also a display screen on the outer casing that can show the motor on / off status, motor speed, and sample lifting direction.

[0025] The sample holder can rotate 180 degrees using a rotating shaft, making it easy to pick up and put in high-temperature superconducting samples; the sample holder can also be fixed with fixing screws.

[0026] The Dewar flask fixing base can hold the Dewar flask, improving its stability and enhancing experimental safety. The motor rotates the lead screw, controlling the position and movement speed of the side connecting rod, thereby controlling the position and movement speed of the sample clamp.

[0027] The motor control module controls the motor's operating status via buttons, while the display control module controls the display screen's operating status. By controlling the motor with the help of the lead screw assembly, the speed and position of the sample entering the cryogenic liquid in the Dewar flask are controlled, thereby controlling the temperature of the experimental sample. The entire process is simple to install and easy to operate.

[0028] The process of using the sample control auxiliary device for superconducting resistance measurement experiments is as follows:

[0029] 1. Preparation and Launch Phase:

[0030] 1.1 Assembly and Inspection of the Device: Assemble the lead screw assembly, sample clamp assembly and other components precisely into the housing according to the design drawings, ensuring that all connection points are secure, and that the wiring is arranged reasonably and connected correctly;

[0031] 1.2 Sample installation: Place sample 22 into sample holder 14 and connect terminal 23. Place Dewar bottle 24 containing cryogenic liquid into Dewar bottle fixing base 16.

[0032] 2. The usage stage of the sample control auxiliary device in the superconducting resistance measurement experiment:

[0033] 2.1 Sample Temperature Control: The movement direction of the sample clamp 14 is controlled by button 2, allowing the sample 22 to slowly approach the Dewar flask 24 and gradually immerse itself in the cryogenic liquid; the sample descent speed and descent position can be adjusted according to the actual situation to control the sample temperature.

[0034] 2.2 Superconducting resistance measurement experiment: The resistance characteristics of the superconducting sample are measured during the sample temperature drop. After the measurement is completed, the sample is removed from the Dewar flask 24 by pressing button 2, and the cryogenic liquid is recovered.

[0035] The above descriptions are all preferred embodiments of this utility model. For those skilled in the art, any modifications to this utility model in various equivalent forms without departing from the principle of this utility model shall fall within the protection scope of the appended claims.

Claims

1. A sample control auxiliary device for superconducting resistance measurement experiments, characterized in that: The device includes a housing (1), inside which a Dewar bottle fixing base (16), a motor (17), and a fixing rod base (18) are installed. A Dewar bottle (24) is placed inside the Dewar bottle fixing base (16). The motor drives the lead screw (11) to rotate. A fixing rod (4) is installed on the fixing rod base (18). A lead screw nut (10) is installed on the lead screw (11). One end of the lead screw nut (10) is connected to a lower connecting block (5), and the other end is connected to a rotating shaft (13). A sample clamp (14) is installed at the rotating shaft (13). The lower connecting block (5) is sleeved on the fixing rod (4).

2. The sample control auxiliary device for superconducting resistance measurement experiments according to claim 1, characterized in that: The outer casing near the Dewar bottle's fixed base is designed as a movable insert (15).

3. The sample control auxiliary device for superconducting resistance measurement experiments according to claim 1, characterized in that: The top of the lead screw (11) is equipped with a lead screw bearing (9), which is connected to the upper connecting block (6) via the upper connecting rod (8). The upper connecting block (6) is fitted onto the fixed rod (4).

4. The sample control auxiliary device for superconducting resistance measurement experiments according to claim 1, characterized in that: One end of the lead screw nut (10) is connected to the lower connecting block (5) via the lower connecting rod (7), and the other end is connected to the rotating shaft (13) via the side connecting rod (12).

5. The sample control auxiliary device for superconducting resistance measurement experiments according to claim 1, characterized in that: The sample clamp (14) has a clamp structure and is fastened by fixing screws (21).

6. The sample control auxiliary device for superconducting resistance measurement experiments according to claim 1, characterized in that: The fixed rod base (18) is equipped with a motor control module (19) and a display control module (20).

7. The sample control auxiliary device for superconducting resistance measurement experiments according to claim 6, characterized in that: Buttons (2) and a display screen (3) are installed on the outer casing to control the operation of the motor control module (19) and display the output of the control module (20).

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