Magnetic field energy conversion demonstration device
Through the magnetic field energy conversion demonstration device, components such as magnetic discs, neodymium iron boron strong magnetic blocks and induction coils are used to display the conversion of magnetic field energy into electrical, mechanical and thermal energy, which solves the problems of single functions and high cost of existing teaching aids, and improves the problem of The teaching effect and students' interest in learning.
Patent Information
- Application Number
- CN202323627195.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2033-12-29
AI Technical Summary
The existing physics teaching demonstration teaching aids have a single function when displaying energy conversion, and cannot fully demonstrate the transformation and transmission methods between various energy, which increases the cost of use, is poor in practicality, and affects the teaching effect.
A magnetic field energy conversion demonstration device was designed. Through the combination of magnetic discs, neodymium iron boron strong magnetic blocks, induction coils, pulleys and aluminum plates, the conversion of magnetic field energy into electrical energy, mechanical energy and thermal energy is achieved, which enhances the change rate of magnetic flux and increases the Experimental efficiency and teaching effect.
This makes the experimental phenomenon more intuitive and vivid, stimulates students' interest in learning and enthusiasm for learning, solves the problems of single functions and high costs, and improves teaching efficiency.
Smart Images
Figure CN222190114U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of demonstration teaching aids, in particular to a magnetic field energy conversion demonstration device. Background Art
[0002] In the existing physics teaching and learning, the conversion of energy is a very important learning part. However, since energy conversion is too abstract and it is difficult to fully understand the concept of energy in class, some students' learning interest is dampened and the teaching effect is affected. There are some demonstration teaching aids, but most of them have a single function and can only demonstrate the conversion between one or two energies. The demonstration method is single and cannot meet the requirements of teaching demonstration. Teaching aids with more demonstration methods can neither teach students in accordance with their aptitude and fully demonstrate the conversion and transmission methods of various energies, but also increase the cost of use and have poor practicality:
[0003] Therefore, a magnetic field energy conversion demonstration device is needed to improve the above problems. Utility Model Content
[0004] In order to solve the problem that when a demonstration device demonstrates magnetic field energy conversion, teaching aids with a variety of demonstration methods can neither teach students in accordance with their aptitude and fully demonstrate the conversion and transmission methods between various energies, nor increase the cost of use and have poor practicality, the utility model provides a magnetic field energy conversion demonstration device to solve the above problem.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A magnetic field energy conversion demonstration device comprises a mounting shell, the outer wall of the mounting shell is rotatably connected with a rotating shaft, one end of the rotating shaft is mounted with a magnetic disc, the outer wall of the magnetic disc is provided with a fixing groove, the inner wall of the fixing groove is provided with a strong NdFeB magnetic block, the other end of the rotating shaft is rotatably connected with a fixing block, the outer wall of the fixing block is mounted with a limiting rod, one end of the limiting rod is mounted on the inner wall of the mounting shell, a small pulley is mounted on the outer wall of the rotating shaft, a connecting belt is mounted on the outer wall of the small pulley, a fixing bracket is mounted on the inner wall of the mounting shell, and the inner wall of the fixing bracket is rotatably connected with A rotating shaft, a large pulley is installed on the outer wall of the rotating shaft, a connecting belt is connected to the outer wall of the large pulley, a crank is installed at one end of the rotating shaft, a fixing frame is installed on the outer wall of the mounting shell, an induction coil is installed on the outer wall of the fixing frame, light-emitting diodes are installed in parallel at both ends of the induction coil, a fixing column is installed on the outer wall of the mounting shell, an aluminum plate is installed on the outer wall of the fixing column, a fixing plate is installed on the side wall of the mounting shell, a positioning column is installed on the outer wall of the fixing plate, a bearing is installed on the outer wall of the positioning column, and a copper disc is installed on the outer wall of the bearing.
[0007] As a preferred solution of the utility model, the fixing grooves are provided in multiple groups and are respectively located on the outer wall of the magnetic disk, and the fixing block is a triangular structure.
[0008] As a preferred solution of the utility model, the NdFeB strong magnetic blocks are provided in multiple groups and are respectively located on the inner wall of the fixing groove, and the N poles and S poles of two adjacent NdFeB strong magnetic blocks are in opposite directions.
[0009] As a preferred solution of the utility model, the limit rods are provided in multiple groups and are respectively located on the outer wall of the fixed block, and the induction coil is a rectangular induction coil formed by 500 turns of enameled wire with a diameter of 0.27 mm.
[0010] As a preferred solution of the utility model, the light emitting diodes are provided in two groups and respectively provide red light and white light, and the induction coil is located directly above the magnetic disk.
[0011] As a preferred solution of the utility model, a thermometer temperature measuring probe is arranged on the outer wall of the aluminum plate, and the outer wall of the aluminum plate is wrapped with gauze as a heat-insulating layer.
[0012] As a preferred solution of the utility model, the aluminum plate is located directly above the magnetic disk and the gap between the aluminum plate and the magnetic disk is small, and the copper disk is located directly above the magnetic disk.
[0013] As a preferred solution of the utility model, the diameter of the copper disc is 130 mm, and the fixing column is located on one side of the fixing frame.
[0014] Compared with the prior art, the utility model provides a magnetic disk embedded with 40 pieces of NdFeB strong magnets in a magnetic field energy conversion demonstration device, and the N poles and S poles of two adjacent magnets face opposite directions. The magnetic disk rotates one circle, so that the magnetic flux passing through the induction coil, the aluminum plate, and the copper disk driven by electromagnetic force completes 20 periodic changes. At the same time, a large pulley is used to drive a small pulley, so that the rotation speed is further expanded, the rate of change of the magnetic flux is improved, and the experimental effect is more intuitive and obvious. The induction coil generates induced current, the aluminum plate that generates eddy current, and the copper disk driven by electromagnetic force are integrated in the same device, which improves the experimental efficiency, and allows students to have a systematic understanding of the magnetic field energy conversion method, greatly improving the teaching efficiency. The experimental phenomenon of the device is intuitive and vivid, which is conducive to stimulating students' interest and enthusiasm in learning, thereby helping to solve the problem of teaching aids with more demonstration methods, which can neither teach students in accordance with their aptitude and fully demonstrate the conversion and transmission methods of various energies, nor increase the use cost and poor practicality. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 It is a schematic diagram of the structure of the installation shell analysis of the utility model;
[0017] Figure 3 This is a schematic diagram of the structure of the fixed block of the utility model;
[0018] Figure 4 This is a schematic diagram of the structure of the fixed bracket of the utility model;
[0019] Figure 5 It is a structural schematic diagram of the magnetic disc of the utility model.
[0020] In the figure: 1. Mounting shell; 2. Rotating shaft; 3. Magnetic disc; 4. Fixing groove; 5. NdFeB strong magnetic block; 6. Fixing block; 7. Limit rod; 8. Small pulley; 9. Connecting belt; 10. Fixed bracket; 11. Rotating shaft; 12. Large pulley; 13. Crank; 14. Fixed bracket; 15. Induction coil; 16. Light emitting diode; 17. Fixed column; 18. Aluminum plate; 19. Fixed plate; 20. Positioning column; 21. Bearing; 22. Copper disc. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0022] Example: See Figure 1-5 A magnetic field energy conversion demonstration device shown in the figure comprises a mounting shell 1, a rotating shaft 2 is rotatably connected to the outer wall of the mounting shell 1, a magnetic disc 3 is mounted on one end of the rotating shaft 2, a fixing groove 4 is provided on the outer wall of the magnetic disc 3, a NdFeB strong magnetic block 5 is mounted on the inner wall of the fixing groove 4, a fixing block 6 is rotatably connected to the other end of the rotating shaft 2, a limiting rod 7 is mounted on the outer wall of the fixing block 6, one end of the limiting rod 7 is mounted on the inner wall of the mounting shell 1, a small pulley 8 is mounted on the outer wall of the rotating shaft 2, a connecting belt 9 is mounted on the outer wall of the small pulley 8, and a fixing bracket 10 is mounted on the inner wall of the mounting shell 1;
[0023] A rotating shaft 11 is rotatably connected to the inner wall of the fixed bracket 10, a large pulley 12 is installed on the outer wall of the rotating shaft 11, a connecting belt 9 is connected to the outer wall of the large pulley 12, a crank 13 is installed at one end of the rotating shaft 11, a fixing frame 14 is installed on the outer wall of the mounting shell 1, an induction coil 15 is installed on the outer wall of the fixing frame 14, light-emitting diodes 16 are installed in parallel at both ends of the induction coil 15, a fixing column 17 is installed on the outer wall of the mounting shell 1, an aluminum plate 18 is installed on the outer wall of the fixing column 17, a fixing plate 19 is installed on the side wall of the mounting shell 1, a positioning column 20 is installed on the outer wall of the fixing plate 19, a bearing 21 is installed on the outer wall of the positioning column 20, and a copper disc 22 is installed on the outer wall of the bearing 21.
[0024] In this embodiment, specific reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The fixed groove 4 is provided with multiple groups and is respectively located on the outer wall of the magnetic disc 3. The fixed block 6 is a triangular structure. The NdFeB strong magnetic block 5 is provided with multiple groups and is respectively located on the inner wall of the fixed groove 4. The N pole and S pole of the two adjacent NdFeB strong magnetic blocks 5 are in opposite directions. The limit rod 7 is provided with multiple groups and is respectively located on the outer wall of the fixed block 6. The induction coil 15 is an enameled wire with a diameter of 0.27 mm and is wound with 500 turns to form a rectangular induction coil. The light-emitting diode 16 is provided with two groups and is respectively Red light and white light, the induction coil 15 is located directly above the magnetic disk 3, a thermometer temperature probe is set on the outer wall of the aluminum plate 18, and the outer wall of the aluminum plate 18 is wrapped with gauze as an insulation layer. The aluminum plate 18 is located directly above the magnetic disk 3 and the gap between the aluminum plate 18 and the magnetic disk 3 is small. The copper disk 22 is located directly above the magnetic disk 3, and the diameter of the copper disk 22 is 130mm. The fixing column 17 is located on one side of the fixing frame 14, and its fixing effect is better.
[0025] When the magnetic field energy conversion demonstration device of this scheme is working, a small pulley 8 is installed on the outer wall of the rotating shaft 2, a connecting belt 9 is installed on the outer wall of the small pulley 8, a fixed bracket 10 is installed on the inner wall of the mounting shell 1, a rotating shaft 11 is rotatably connected to the inner wall of the fixed bracket 10, a large pulley 12 is installed on the outer wall of the rotating shaft 11, and a connecting belt 9 is connected to the outer wall of the large pulley 12. Under the action of the crank 13, the crank 13 drives the rotating shaft 11 to rotate, and the rotating shaft 11 drives the large pulley 12 to rotate. The connecting belt 9 on the outer wall of the pulley 12 pulls the small pulley 8 to rotate, so that the small pulley 8 drives the rotating shaft 2 to rotate. At the same time, a magnetic disk 3 is installed at one end of the rotating shaft 2, and a fixing groove 4 is opened on the outer wall of the magnetic disk 3. Under the action of the NdFeB strong magnetic block 5 on the inner wall of the fixing groove 4, the rotating shaft 2 rotates on the outer wall of the mounting shell 1, so that one end of the rotating shaft 2 drives the magnetic disk 3 to rotate. The large pulley 12 drives the small pulley 8, and the rotation speed can be increased, thereby realizing the rapid rotation of the magnetic disk 3, so that the device can operate.
[0026] By continuously shaking the crank 13, the magnetic disk 3 is rotated. When multiple groups of NdFeB strong magnetic blocks 5 are arranged and respectively located on the inner wall of the fixed groove 4, and the N poles and S poles of two adjacent NdFeB strong magnetic blocks 5 are in opposite directions, the following phenomena can be observed at the same time. First, due to the rotation of the NdFeB strong magnetic blocks 5 on the outer wall of the magnetic disk 3 to generate magnetism, an induction coil 15 is installed on the outer wall of the fixed frame 14. Under the action of light-emitting diodes 16 installed in parallel at both ends of the induction coil 15, the induction coil 15 generates an induced current, so that the light-emitting diodes 16 emit light alternately, which confirms that the magnetic field can be converted into electrical energy. Then, a fixing plate 19 is installed on the side wall of the mounting shell 1, and a positioning column 20 is installed on the outer wall of the fixing plate 19. A bearing 21 is installed on the outer wall of the position column 20, and a copper disc 22 is installed on the outer wall of the bearing 21. Under the action of the copper disc 22, the copper disc 22 rotates with the rotation of the magnetic disc 3, which proves that the magnetic field can be converted into mechanical energy. Then a fixing column 17 is installed on the outer wall of the mounting shell 1, and an aluminum plate 18 is installed on the outer wall of the fixing column 17. A thermometer temperature probe is arranged on the outer wall of the aluminum plate 18, and gauze is wrapped on the outer wall of the aluminum plate 18 as an insulation layer. The aluminum plate 18 is located directly above the magnetic disc 3 and the gap between the aluminum plate 18 and the magnetic disc 3 is small, so the temperature of the aluminum plate 18 increases, and the temperature of the aluminum plate 18 measured by the digital thermometer increases with the rotation of the magnetic disc 3, which proves that the magnetic field can be converted into thermal energy.
[0027] 40 NdFeB strong magnetic blocks 5 are embedded in the magnetizing disk 3, and the N poles and S poles of two adjacent magnets face opposite directions. The magnetizing disk 3 rotates one circle, so that the magnetic flux passing through the induction coil 15, the aluminum plate 18, and the copper disk 22 driven by electromagnetic force completes 20 periodic changes. At the same time, the large pulley 12 drives the small pulley 8, so that the rotation speed is further expanded, the rate of change of the magnetic flux is improved, and the experimental effect is more intuitive and obvious. The induction coil 15 that generates induced current, the aluminum plate 18 that generates eddy current, and the copper disk 22 driven by electromagnetic force are integrated in the same device, which improves the experimental efficiency and allows students to have a systematic understanding of the magnetic field energy conversion method, greatly improving the teaching efficiency. The experimental phenomenon of this device is intuitive and vivid, which is conducive to stimulating students' interest and enthusiasm in learning, thereby helping to solve the problem of teaching aids with more demonstration methods, which can neither teach students in accordance with their aptitude and fully demonstrate the conversion and transmission methods of various energies, nor increase the cost of use and poor practicality.
[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A magnetic field energy conversion demonstration device, comprising a mounting housing (1), characterized in that: A rotating shaft (2) is rotatably connected to the outer wall of the mounting shell (1), a magnetic disc (3) is mounted on one end of the rotating shaft (2), a fixing groove (4) is provided on the outer wall of the magnetic disc (3), a NdFeB strong magnetic block (5) is mounted on the inner wall of the fixing groove (4), a fixing block (6) is rotatably connected to the other end of the rotating shaft (2), a limiting rod (7) is mounted on the outer wall of the fixing block (6), one end of the limiting rod (7) is mounted on the inner wall of the mounting shell (1), a small pulley (8) is mounted on the outer wall of the small pulley (8), a connecting belt (9) is mounted on the outer wall of the small pulley (8), and a fixing bracket (10) is mounted on the inner wall of the mounting shell (1); A rotating shaft (11) is rotatably connected to the inner wall of the fixed bracket (10), a large pulley (12) is mounted on the outer wall of the rotating shaft (11), a connecting belt (9) is connected to the outer wall of the large pulley (12), a crank (13) is mounted on one end of the rotating shaft (11), a fixed frame (14) is mounted on the outer wall of the mounting shell (1), an induction coil (15) is mounted on the outer wall of the fixed frame (14), light-emitting diodes (16) are mounted in parallel at both ends of the induction coil (15), a fixed column (17) is mounted on the outer wall of the mounting shell (1), an aluminum plate (18) is mounted on the outer wall of the fixed column (17), a fixed plate (19) is mounted on the side wall of the mounting shell (1), a positioning column (20) is mounted on the outer wall of the fixing plate (19), a bearing (21) is mounted on the outer wall of the positioning column (20), and a copper disc (22) is mounted on the outer wall of the bearing (21).
2. A magnetic field energy conversion demonstration device according to claim 1, characterized in that: The fixing grooves (4) are provided in multiple groups and are respectively located on the outer wall of the magnetic disc (3); the fixing block (6) is a triangular structure.
3. A magnetic field energy conversion demonstration device according to claim 1, characterized in that: The NdFeB strong magnetic blocks (5) are arranged in multiple groups and are respectively located on the inner wall of the fixing groove (4), and the N poles and S poles of two adjacent NdFeB strong magnetic blocks (5) are in opposite directions.
4. A magnetic field energy conversion demonstration device according to claim 1, characterized in that: The limiting rods (7) are provided in multiple groups and are respectively located on the outer wall of the fixed block (6); the induction coil (15) is a rectangular induction coil formed by winding 500 turns of enameled wire with a diameter of 0.27 mm.
5. A magnetic field energy conversion demonstration device according to claim 1, characterized in that: The light emitting diodes (16) are provided in two groups, emitting red light and white light respectively, and the induction coil (15) is located directly above the magnetic disk (3).
6. A magnetic field energy conversion demonstration device according to claim 1, characterized in that: A thermometer temperature measuring probe is arranged on the outer wall of the aluminum plate (18), and gauze is wrapped on the outer wall of the aluminum plate (18) as a heat-insulating layer.
7. A magnetic field energy conversion demonstration device according to claim 1, characterized in that: The aluminum plate (18) is located directly above the magnetic disk (3), and the gap between the aluminum plate (18) and the magnetic disk (3) is relatively small; the copper disk (22) is located directly above the magnetic disk (3).
8. A magnetic field energy conversion demonstration device according to claim 1, characterized in that: The diameter of the copper disc (22) is 130 mm, and the fixing column (17) is located on one side of the fixing frame (14).