Teaching equipment for displaying magnetohydrodynamic propulsion principle and phenomenon

Abstract

The utility model discloses a teaching device for demonstrating magnetohydrodynamic propulsion principle and phenomenon, which comprises twelve grids, a central shaft, a stainless steel tube 1, a stainless steel tube 2, a head end collet and a tail end frame, and is characterized in that the twelve grids are distributed and fixed on the central shaft at equal intervals by taking the central shaft as the center to form a cylinder; the teaching equipment for displaying the magnetohydrodynamic propulsion principle and phenomenon is simple in structure, low in manufacturing cost, suitable for various scenes, and capable of visually displaying the magnetohydrodynamic propulsion effect no matter in experimental exploration or teaching explanation.

Description

TECHNICAL FIELD

[0001] The utility model relates to experimental, teaching equipment technical field, and especially provide the teaching equipment for demonstrating magnetic fluid propulsion principle and phenomenon. BACKGROUND

[0002] Magnetic fluid propulsion technology is the world's cutting-edge technology, it uses seawater as a conductor, constructs a specific shape magnetic field through a magnet, uses Lorentz force to accelerate the free ions in seawater, makes it hit water molecules directionally. Macroscopically, seawater generates directional movement, and generates thrust to a submarine. With the development of superconducting technology, magnetic fluid propulsion technology has made new progress, including superconducting spiral coil in super-strong artificial electromagnet is used in this technology.

[0003] Although magnetic fluid propulsion technology has made great progress, but at present, there is still a lack of a suitable experimental teaching equipment to demonstrate guidance, resulting in many people's understanding of this technology only stays in sporadic records, lacks clear cognition.

[0004] Therefore, it is very meaningful to provide a teaching equipment for demonstrating magnetic fluid propulsion principle and phenomenon. TECHNICAL SOLUTION

[0005] In view of this, the purpose of the utility model is to provide a teaching equipment for demonstrating magnetic fluid propulsion principle and phenomenon, so as to accurately demonstrate the principle and phenomenon of magnetic fluid propulsion with lower cost.

[0006] The utility model provides a technical scheme: a teaching equipment for demonstrating magnetic fluid propulsion principle and phenomenon, including grating, center axis, stainless steel pipe one, stainless steel pipe two, first end bottom support and end frame, wherein the grating is provided with twelve, twelve grating is fixedly distributed on the center axis with the center axis as the center, and forms a cylindrical shape;

[0007] The grating is an integral structure in the shape of a rectangular parallelepiped, and the body is divided into two parts, which are A part of the rectangular parallelepiped and B part of the rectangular parallelepiped, wherein the A part of the rectangular parallelepiped is provided with a hollow layer, and the hollow layer is placed with a neodymium magnet; the B part of the rectangular parallelepiped is a solid body.

[0008] The inner side of the B part of the rectangular parallelepiped is connected to the center axis, and the upper and lower ends of the A part of the rectangular parallelepiped are connected to the first end bottom support and the end frame, respectively.

[0009] The twelve grating is sleeved with stainless steel pipe one; the center axis is a hollow cylindrical pipe, and the center axis is placed with stainless steel pipe two.

[0010] Further, the top end of the grating is in the shape of a sharp head.

[0011] Further, the first end of the central axis is a diverging structure.

[0012] Further, the bottom support protrudes from the cylinder.

[0013] Further, the end frame is a frame converging towards the center, in a tail shape.

[0014] The teaching device for displaying the principle and phenomenon of magnetic fluid propulsion provided by the utility model has simple structure, low manufacturing cost and can be applied to various scenes and can intuitively display the magnetic fluid propulsion effect whether for experimental exploration or teaching explanation. BRIEF DESCRIPTION OF DRAWINGS

[0015] The utility model will be further explained in detail in combination with the drawings and embodiments:

[0016] Figure 1 The utility model provides the teaching device for displaying the principle and phenomenon of magnetic fluid propulsion three-dimensional structure schematic diagram when horizontal placement of the utility model;

[0017] Figure 2 The utility model provides the front view structure schematic diagram of the first end of the teaching device, namely the output end face;

[0018] Figure 3 The utility model provides the cross section structure schematic diagram of the first end of the teaching device, namely the output end face;

[0019] Figure 4 The utility model provides the plan view of the teaching device;

[0020] Figure 5 The utility model provides the three-dimensional structure schematic diagram of the first end of the teaching device, namely the output end face, vertically placed;

[0021] Figure 6 The utility model provides the three-dimensional structure schematic diagram of the tail end of the teaching device, namely the output end face, vertically placed;

[0022] Figure 7 The utility model provides the cross section view of the parallel end face axis of the teaching device;

[0023] Figure 8 The utility model provides the use scene diagram of the teaching device. DETAILED DESCRIPTION

[0024] The utility model will be further explained in detail in combination with the drawings and embodiments:

[0025] As Figures 1 to 7As shown, the utility model provides a teaching equipment for showing the principle and phenomenon of magnetic fluid propulsion, including grid 2, central shaft 3, stainless steel pipe one, stainless steel pipe two, first end bottom support 4 and end frame, wherein the grid 2 is equipped with twelve, twelve grid 2 is fixed with central shaft as center equidistant distribution on central shaft 3, and constitutes cylindrical shape;

[0026] The grid 2 is the integrated structure of cuboid shape, and the body is divided into two parts, which are A cuboid 21 and B cuboid 22 respectively, wherein the A cuboid 21 is provided with a hollow layer, and the neodymium magnet is placed in the hollow layer; the B cuboid 22 is a solid body.

[0027] As shown in the figure, Figures 1-3 The device provided by the utility model is cylindrical as a whole, and twelve grids are distributed in the middle, each of which is composed of two cuboids. The upper larger cuboid is hollow, and the inside is used to place the sheet-shaped neodymium magnet. The lower smaller cuboid is solid. The setting of this structure can bring three beneficial effects: 1. reduce the device counterweight and reduce the cost; 2. isolate the magnet and the electrode inside, prevent the magnet from conducting electricity during the experiment, and affect the result; 3. make full use of the magnetic induction lines, increase the flow under the condition of unchanged device volume, and make the phenomenon more obvious.

[0028] The inside of the B cuboid 22 is connected to the central shaft 3 of the cylindrical frame 1, and the upper and lower ends of the outside of the A cuboid 21 are connected to the first end bottom support 4 and the end frame respectively.

[0029] The bottom support 4 protrudes from the cylindrical body; the cylindrical frame body is sleeved with a stainless steel pipe one; the central shaft 3 is a hollow cylindrical pipeline, and the stainless steel pipe two is placed in the central shaft.

[0030] The outermost end of the cylindrical body 1, i.e. the first end, is provided with a protruding bottom support, and the larger diameter stainless steel pipe one can be directly sleeved on the outer surface of the cylindrical body 1, and the bottom support structure can prevent the stainless steel pipe from falling off. The innermost end of the cylindrical body 1 is a hollow cylindrical pipeline for placing the smaller diameter stainless steel pipe. When the two stainless steel pipes are used as electrodes and voltage is applied (assuming that the inner pipe is connected to the positive electrode), the electric field lines between the two electrodes are distributed radially from the inner pipe to the outer pipe. At this time, the magnetic induction lines between all the grids are perpendicular to the electric field lines, and when the whole device is immersed in the salt solution, the ions in the salt solution between each grid will receive the Lorentz force and move in the direction perpendicular to the screen, so that the salt solution in the device moves in a certain direction.

[0031] Further, the two ends of the grid 2 are pointed 23, which is more in line with the principle of fluid dynamics and effectively reduces the generation of vortex;

[0032] Further, the first end of the central axis corresponds to the first end support 4, and the first end of the central axis 3 is provided with a flow distribution cone structure 5, which is similar to the design of the top of a turbine engine and plays an important role in the flow distribution of fluid, can reduce the influence of resistance, and improve the utilization rate of energy.

[0033] Further, the end of the cylindrical body 1 formed by the grid is a finishing shape 6, which reduces the cross-sectional area of the fluid outflow by increasing the edge converging to the center, effectively converging the flow caused by the acceleration of the solution, effectively reducing the error of the speed measurement in the subsequent experiment, and making the experimental phenomenon more obvious.

[0034] The experimental assembly of the above-mentioned device provided by the embodiment in application is as shown in the figure. Figure 8 As shown in the figure, 111 is a computer, 112 is a flow meter, 113 is a probe, 114 is the magnetic fluid propulsion demonstration device provided by the utility model, 115 represents a transparent water tank, and 116 is a student power supply. After sequentially connecting the above-mentioned components, the demonstration experiment can be performed.

[0035] The teaching device for displaying the principle and phenomenon of magnetic fluid propulsion provided by the embodiment is original, can be applied to various scenes, and can intuitively display the principle and phenomenon of magnetic fluid propulsion in the fields of experimental exploration and teaching explanation.

[0036] The device has low manufacturing cost, the device body can be printed by a 3D printer, the neodymium magnet and the stainless steel pipe required in the device are also easy to obtain, and the overall manufacturing cost is less than 400 yuan. Compared with the teaching device which costs tens of thousands of yuan, the economic benefit is extremely high, and the device has strong universality.

[0037] The overall structure of the device is simple and clear, the use difficulty is reduced, students can easily assemble and disassemble the device, and the replacement of the electrodes is also very convenient, which only needs to replace the inner and outer stainless steel pipes.

[0038] The specific implementation manner of the utility model is written in a progressive manner, and the differences between various embodiments are emphasized, and the similar parts can be mutually referred.

[0039] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range of ordinary skilled persons in the art without departing from the purpose of the utility model.

Claims

1. A teaching device for demonstrating the principle and phenomena of magnetic fluid propulsion, characterized in that, It comprises a grid (2), a central shaft (3), a stainless steel pipe one, a stainless steel pipe two, a first end bottom support (4) and an end frame, wherein the grid (2) is provided with twelve, and the twelve grids (2) are fixed on the central shaft (3) at equal intervals with the central shaft as the center to form a cylindrical shape. The grid (2) is an integrated structure in the shape of a cuboid, and the body is divided into two parts, which are an A cuboid (21) and a B cuboid (22), wherein the A cuboid (21) is provided with a hollow layer, and the hollow layer is placed with a neodymium magnet; and the B cuboid (22) is a solid body. The inner side of the B cuboid (22) is connected to the central shaft (3), and the upper and lower ends of the outer side of the A cuboid (21) are connected to the first end bottom support (4) and the end frame, respectively. The twelve grids are sleeved with the stainless steel pipe one; the central shaft (3) is a hollow cylindrical pipeline, and the central shaft (3) is placed with the stainless steel pipe two.

2. The teaching apparatus for demonstrating the principle and phenomenon of magnetic fluid propulsion according to claim 1, wherein The top end (23) of the grid (2) is in the shape of a sharp head.

3. The teaching apparatus for demonstrating the principle and phenomenon of magnetic fluid propulsion according to claim 1, wherein The first end of the central shaft (3) is a shunt vertebral structure (5).

4. The teaching apparatus for demonstrating the principle and phenomenon of magnetic fluid propulsion according to claim 1, wherein The bottom support (4) protrudes from the cylinder.

5. The teaching apparatus for demonstrating the principle and phenomenon of magnetic fluid propulsion according to claim 1, wherein The end frame is a frame that is gathered to the center, and is in the shape of a tail.

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