An experimental instrument for researching characteristics of a tight coupling transformer

Abstract

The utility model discloses a kind of tight coupling transformer characteristic research experimental instrument, including main instrument, the utility model is provided with L type positioning seat on the top of main instrument, and L type positioning seat is embedded L type magnetic separation plate, two slide bars respectively inserted into first U type adjusting block and second U type adjusting block below are provided in L type magnetic separation plate, and it is inserted into compression screw assembly in first U type adjusting block two side walls and second U type adjusting block two side walls, and compression screw assembly insertion end is fixedly connected with pressure plate piece, first circuit and second circuit are respectively provided on the top of main instrument, and external oscilloscope interface is provided on first circuit and second circuit, the instrument compact structure, convenient operation, relatively low cost, not only suitable for college physics experiment course, also can be used for middle school student's physics development teaching and popular science display activity, help to promote electromagnetism theory knowledge and modern electronic application technology combination, with remarkable teaching value and extensive social significance.

Description

Technical Field

[0001] This utility model relates to the field of experimental instrument technology, specifically to an experimental instrument for studying the characteristics of tightly coupled transformers. Background Technology

[0002] Electromagnetism has always held a crucial position in university physics experimental teaching, encompassing both the verification of fundamental theories and the preliminary exploration of modern technological applications. In recent years, with the rapid development of technologies such as wireless charging and new energy transmission, research on mutual inductance coupling, electromagnetic induction, and non-radiative energy transfer mechanisms has deepened, and experiments related to mutual inductance coils have gradually become an emerging topic in university physics experiments. To address this trend, a multi-parameter, modular experimental instrument for studying the characteristics of tightly coupled transformers is needed. This device integrates signal generation, data acquisition, and real-time display functions, supports flexible adjustment of various parameters such as frequency, load, and impedance, and can perform both basic static characteristic tests and dynamic frequency response analysis of tightly coupled transformers. Therefore, an experimental instrument for studying the characteristics of tightly coupled transformers is required. Utility Model Content

[0003] The purpose of this invention is to provide an experimental instrument for studying the characteristics of tightly coupled transformers, thereby solving the problems mentioned in the background.

[0004] To solve the above-mentioned technical problems, this utility model specifically provides the following technical solution: a tightly coupled transformer characteristic research experimental instrument, including a main instrument. An L-shaped positioning seat is fixedly connected to one side of the upper part of the main instrument, and an L-shaped magnetic shielding plate is fixedly connected inside the L-shaped positioning seat. Two sliding rods are fixedly connected to the side of the vertical end of the L-shaped magnetic shielding plate, and the two sliding rods are respectively inserted into a first U-shaped adjusting block and a second U-shaped adjusting block. The middle part of the clamping screw assembly is threaded into the two vertical walls of the first U-shaped adjusting block and the two vertical walls of the second U-shaped adjusting block, and a pressure plate is fixedly connected to the insertion end of the clamping screw assembly. The vertical end of the L-shaped positioning seat and the vertical end of the L-shaped magnetic shielding plate are jointly inserted into an induction magnetic rod assembly, and the induction magnetic rod assembly is fixedly connected to one end of a dial indicator at the outer end of the L-shaped positioning seat. A first circuit and a second circuit are respectively provided on the other side of the upper part of the main instrument, and multiple external oscilloscope interfaces are provided above the first circuit and the second circuit.

[0005] Preferably, the L-shaped positioning seat has a first inner groove, and an L-shaped magnetic shielding plate is embedded in the first inner groove for fixed connection.

[0006] Preferably, the L-shaped magnetic shielding plate has a second inner groove, and there is a distance between the two sliding rods and the bottom of the second inner groove.

[0007] Preferably, both the first U-shaped adjusting block and the second U-shaped adjusting block are positioned below the second inner groove, with the second U-shaped adjusting block close to the vertical end of the L-shaped magnetic shielding plate. Positioning is achieved using the interior of the L-shaped magnetic shielding plate and the side walls of the L-shaped positioning seat, ensuring that the first and second U-shaped adjusting blocks do not shift during internal movement.

[0008] Preferably, the first U-shaped adjusting block and the second U-shaped adjusting block are respectively provided with a first placement groove and a second placement groove, and the pressure plate is respectively placed on both sides inside the first placement groove and the second placement groove.

[0009] Preferably, a rotating head is fixedly connected to the outer end of the clamping screw assembly. The threaded section in the middle of the clamping screw assembly can move within the side walls of the first U-shaped adjusting block and the side walls of the second U-shaped adjusting block, causing the pressure plates on both sides inside to move closer together or further apart.

[0010] Preferably, one end of the inductive magnetic rod assembly is provided with a positioning rod, and the vertical end of the L-shaped positioning seat and the vertical end of the L-shaped magnetic shielding plate are inserted into the positioning rod and fixedly connected, and one end of the positioning rod is fixedly connected to one end of the dial indicator.

[0011] Preferably, the external oscilloscope interface is connected to the main instrument internally, and the external oscilloscope interface is connected to an external oscilloscope. The oscilloscope allows the experimenter to observe the phase relationship and waveform changes of voltage and current in the circuit in real time and intuitively.

[0012] Compared with the prior art, this utility model has the following advantages: This invention features an L-shaped positioning seat above the main instrument, with an L-shaped magnetic shield embedded within it. Two sliding rods within the L-shaped magnetic shield are inserted below the first and second U-shaped adjusting blocks, respectively. Clamping screw assemblies are inserted into the side walls of both the first and second U-shaped adjusting blocks, with pressure plates fixedly connected to their insertion ends. A first circuit and a second circuit are located above the main instrument, each with an external oscilloscope interface. This instrument is compact, easy to operate, and low-cost, suitable not only for university physics experiments but also for secondary school physics extension teaching and science popularization activities. It helps promote the integration of electromagnetic theory with modern electronic application technology, possessing significant teaching value and broad social significance. Attached Figure Description

[0013] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall design of this utility model; Figure 2 This is an enlarged schematic diagram of point A in this utility model; Figure 3 This is a front view schematic diagram of the entire utility model; Figure 4 This is a side view of the overall structure of this utility model.

[0015] The labels in the attached diagram represent the following: 1. Main instrument; 2. L-shaped positioning seat; 201. First inner groove; 3. L-shaped magnetic shielding plate; 301. Second inner groove; 4. Slide rod; 5. First U-shaped adjusting block; 501. First placement groove; 6. Second U-shaped adjusting block; 601. Second placement groove; 7. Clamping screw assembly; 701. Rotating head; 8. Pressure plate; 9. Induction magnetic rod assembly; 901. Positioning rod; 10. Dial indicator; 11. First circuit; 12. Second circuit; 13. External oscilloscope interface. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-4As shown, this utility model provides an experimental instrument for studying the characteristics of tightly coupled transformers, including a main instrument 1. An L-shaped positioning seat 2 is fixedly connected to one side of the main instrument 1, and an L-shaped magnetic shielding plate 3 is fixedly connected inside the L-shaped positioning seat 2. Two sliding rods 4 are fixedly connected to the side of the vertical end of the L-shaped magnetic shielding plate 3, and the two sliding rods 4 are respectively inserted into the first U-shaped adjusting block 5 and the second U-shaped adjusting block 6. The middle threaded connection of the clamping screw assembly 7 is inserted into the two vertical walls of the first U-shaped adjusting block 5 and the two vertical walls of the second U-shaped adjusting block 6, and the insertion end of the clamping screw assembly 7 is fixedly connected to the pressure plate 8. The vertical end of the L-shaped positioning seat 2 and the vertical end of the L-shaped magnetic shielding plate 3 are inserted into the induction magnetic rod assembly 9, and the induction magnetic rod assembly 9 is fixedly connected to one end of the dial indicator 10 at the outer end of the L-shaped positioning seat 2. A first circuit 11 and a second circuit 12 are respectively provided on the other side above the main instrument 1, and multiple external oscilloscope interfaces 13 are provided above the first circuit 11 and the second circuit 12.

[0018] In this embodiment, a first inner groove 201 is provided in the L-shaped positioning seat 2, and an L-shaped magnetic shielding plate 3 is embedded in the first inner groove 201 for fixed connection.

[0019] Furthermore, the L-shaped magnetic shielding plate 3 has a second inner groove 301, and there is a distance between the two sliding rods 4 and the bottom of the second inner groove 301.

[0020] Furthermore, the first U-shaped adjusting block 5 and the second U-shaped adjusting block 6 are both placed inside the second inner groove 301, and the second U-shaped adjusting block 6 is close to the vertical end of the L-shaped magnetic shielding plate 3.

[0021] After the first U-shaped adjusting block 5 and the second U-shaped adjusting block 6 are placed inside the L-shaped magnetic shielding plate 3, they are positioned externally using the two side walls of the L-shaped positioning seat 2, so that the first U-shaped adjusting block 5 and the second U-shaped adjusting block 6 will not shift when moving inside.

[0022] In this embodiment, a first placement groove 501 and a second placement groove 601 are respectively provided in the first U-shaped adjusting block 5 and the second U-shaped adjusting block 6, and the pressure plate 8 is respectively placed on both sides inside the first placement groove 501 and the second placement groove 601.

[0023] Furthermore, a rotating head 701 is fixedly connected to the outer end of the clamping screw assembly 7.

[0024] After the rotating head 701 at the outer end of the clamping screw assembly 7 rotates, the threaded section in the middle of the clamping screw assembly 7 can move within the two side walls of the first U-shaped adjusting block 5 and the two side walls of the second U-shaped adjusting block 6, and the pressure plate members 8 on both sides inside can move closer to each other or further away from each other.

[0025] In this embodiment, a positioning rod portion 901 is provided at one end of the induction magnetic rod assembly 9, and the vertical end of the L-shaped positioning seat 2 and the vertical end of the L-shaped magnetic shielding plate 3 are inserted into the positioning rod portion 901 for fixed connection. One end of the positioning rod portion 901 is fixedly connected to one end of the dial indicator 10. Experimental data can be obtained by using the dial indicator 10 through the induction magnetic rod assembly 9.

[0026] In this embodiment, the external oscilloscope interface 13 is connected to the main instrument 1, and an external oscilloscope is connected to the external oscilloscope interface 13. After connecting the oscilloscope via the external oscilloscope interface 13, the experimenter can observe the phase relationship and waveform changes of voltage and current in the circuit in real time and intuitively.

[0027] Working principle: An L-shaped positioning seat 2 is provided above the main instrument 1, and an L-shaped magnetic shielding plate 3 is embedded in the L-shaped positioning seat 2. Two sliding rods 4 provided in the L-shaped magnetic shielding plate 3 are respectively inserted into the lower part of the first U-shaped adjusting block 5 and the second U-shaped adjusting block 6, so that the first U-shaped adjusting block 5 and the second U-shaped adjusting block 6 can move within the L-shaped magnetic shielding plate 3. A clamping screw assembly 7 is inserted into the side walls of the first U-shaped adjusting block 5 and the side walls of the second U-shaped adjusting block 6, and a pressure plate 8 is fixedly connected to the insertion end of the clamping screw assembly 7. A rotating head 70 is provided at the outer end of the clamping screw assembly 7. After rotation, the pressure plates 8 on both sides of the first U-shaped adjusting block 5 and the second U-shaped adjusting block 6 can move closer to each other or further away from each other. This allows an iron core or coil to be placed inside the first U-shaped adjusting block 5 and the second U-shaped adjusting block 6, and the pressure plates 8 to press it down. Then, the distance between the first U-shaped adjusting block 5 and the second U-shaped adjusting block 6 can be moved, and the induction magnetic rod assembly 9, which is inserted into the vertical end of the L-shaped positioning seat 2 and the vertical end of the L-shaped magnetic shielding plate 3, will contact the iron core or coil. The contact distance of the induction magnetic rod assembly 9 can be adjusted by the dial indicator 10.

[0028] In addition, a first circuit 11 and a second circuit 12 are respectively provided above the main instrument 1. When the experiment is conducted using an iron core or coil, wires can be inserted into the external oscilloscope interface 13 in the first circuit 11 and the second circuit 12 to connect to an external oscilloscope, so that the experimenter can observe the phase relationship and waveform changes of voltage and current in the circuit in real time and intuitively.

[0029] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. An experimental apparatus for studying the characteristics of tightly coupled transformers, comprising a main instrument (1), characterized in that: An L-shaped positioning seat (2) is fixedly connected to one side of the main instrument (1), and an L-shaped magnetic shielding plate (3) is fixedly inserted into the L-shaped positioning seat (2). Two sliding rods (4) are fixedly connected to the side of the vertical end of the L-shaped magnetic shielding plate (3), and the two sliding rods (4) are respectively inserted into the first U-shaped adjusting block (5) and the second U-shaped adjusting block (6). The middle thread of the clamping screw assembly (7) is inserted into the two vertical walls of the first U-shaped adjusting block (5) and the two vertical walls of the second U-shaped adjusting block (6), and the clamping screw assembly (7) is threaded into the middle of the two vertical walls of the first U-shaped adjusting block (5). The insertion end of the screw assembly (7) is fixedly connected to the pressure plate (8). The vertical end of the L-shaped positioning seat (2) and the vertical end of the L-shaped magnetic shielding plate (3) are inserted into the induction magnetic rod assembly (9). The induction magnetic rod assembly (9) is placed on the outer end of the L-shaped positioning seat (2) and fixedly connected to one end of the dial indicator (10). The other side above the main instrument (1) is provided with a first circuit (11) and a second circuit (12). The first circuit (11) and the second circuit (12) are provided with multiple external oscilloscope interfaces (13) above them.

2. The experimental apparatus for studying the characteristics of a tightly coupled transformer according to claim 1, characterized in that: The L-shaped positioning seat (2) has a first inner groove (201) inside, and the L-shaped magnetic shielding plate (3) is embedded and fixedly connected inside the first inner groove (201).

3. The experimental apparatus for studying the characteristics of a tightly coupled transformer according to claim 2, characterized in that: The L-shaped magnetic shielding plate (3) has a second inner groove (301) inside, and there is a distance between the two sliding rods (4) and the bottom of the second inner groove (301).

4. The experimental apparatus for studying the characteristics of a tightly coupled transformer according to claim 3, characterized in that: The first U-shaped adjustment block (5) and the second U-shaped adjustment block (6) are both placed inside the second inner groove (301), and the second U-shaped adjustment block (6) is close to the vertical end of the L-shaped magnetic shielding plate (3).

5. The experimental apparatus for studying the characteristics of a tightly coupled transformer according to claim 1, characterized in that: The first U-shaped adjusting block (5) and the second U-shaped adjusting block (6) are respectively provided with a first placement groove (501) and a second placement groove (601), and the pressure plate (8) is respectively placed on both sides inside the first placement groove (501) and the second placement groove (601).

6. The experimental apparatus for studying the characteristics of a tightly coupled transformer according to claim 5, characterized in that: The outer end of the clamping screw assembly (7) is fixedly connected to a rotating head (701).

7. The experimental apparatus for studying the characteristics of a tightly coupled transformer according to claim 1, characterized in that: The induction magnetic rod assembly (9) has a positioning rod (901) at one end, and the vertical end of the L-shaped positioning seat (2) and the vertical end of the L-shaped magnetic shielding plate (3) are inserted into the positioning rod (901) for fixed connection, and the positioning rod (901) is fixedly connected to one end of the dial indicator (10).

8. The experimental apparatus for studying the characteristics of a tightly coupled transformer according to claim 1, characterized in that: The external oscilloscope interface (13) is internally connected to the main instrument (1), and the external oscilloscope interface (13) is connected to an external oscilloscope.

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