Magnetic induction line distribution dynamic demonstration device of electrified solenoid

Abstract

The utility model discloses a magnetic induction line distribution dynamic demonstration device of an electrified solenoid, which is characterized in that a direct current power supply is used for supplying power to an electrified solenoid coil, and the electrified solenoid coil is horizontally arranged on a demonstration table in a penetrating manner through an electrified solenoid coil mounting hole; the part, exposed above the demonstration table, of the electrified solenoid coil comprises a plurality of first arc-shaped conductors which are regularly arranged, and the first arc-shaped conductors are of detachable structures; the part, exposed below the demonstration platform, of the electrified solenoid coil comprises a left end outgoing line penetrating out of the outgoing line mounting hole and connected with the first power supply binding post, a second arc-shaped conductor connected between two adjacent first arc-shaped conductors, and a right end outgoing line penetrating out of the outgoing line mounting hole and connected with the second power supply binding post; the second arc-shaped conductor is provided with a third leading-out wire, the end portion of the third leading-out wire penetrates out of the leading-out wire installation hole and is detachably connected with a first wire, the first wire is used for being connected with a first power supply binding post, the structure is simple, and the problems existing in the prior art can be effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to physical experiment equipment field, concretely is a dynamic demonstration device of magnetic induction line distribution of power-on solenoid. BACKGROUND

[0002] The teaching content of the first subsection of chapter 13 in the third volume of the physics required for the ordinary high school is about the magnetic field and magnetic induction line.In the teaching process of the magnetic field and magnetic induction line distribution of the power-on solenoid, although many experimental apparatuses are used, the experimental effect is not satisfactory; especially, the distribution pattern of the magnetic induction line around the power-on straight wire from a circle of power-on wire cannot be shown to the students, and the distribution pattern of the magnetic induction line around the solenoid from the multiple circles of power-on wire cannot be shown to the students, so that the students cannot clearly understand the whole process of the formation of the solenoid magnetic field.

[0003] In order to better show the distribution pattern of the magnetic induction line of the power-on solenoid, therefore, we propose a dynamic demonstration device of the magnetic induction line distribution of the power-on solenoid to solve the above problems. CONTENT OF THE UTILITY MODEL

[0004] (I) technical problem solved

[0005] In view of the deficiencies of the prior art, the utility model provides a dynamic demonstration device of the magnetic induction line distribution of the power-on solenoid, which can solve the problems existing in the prior art.

[0006] (II) technical scheme

[0007] In order to achieve the above purpose, the utility model is realized by the following technical scheme:

[0008] The utility model provides a dynamic demonstration device of magnetic induction line distribution of energized solenoid, including base, which is provided with DC power supply, energized solenoid and demonstration platform, and the demonstration platform is provided with energized solenoid mounting hole and lead-out wire mounting hole, the energized solenoid is horizontally arranged on the demonstration platform through the energized solenoid mounting hole, so that the part of the energized solenoid exposed above the demonstration platform includes a plurality of first arc conductors arranged regularly, and the first arc conductors are detachable structure, the part of the energized solenoid exposed below the demonstration platform includes left end lead-out wire, second arc conductor connected between two adjacent first arc conductors and right end lead-out wire, the end of left end lead-out wire is electrically connected with first power terminal post through lead-out wire mounting hole, the second arc conductor is further provided with third lead-out wire, and the end of third lead-out wire is detachably connected with first lead wire through lead-out wire mounting hole, and the first lead wire is used for electrically connecting with first power terminal post, the end of right end lead-out wire is electrically connected with second power terminal post through lead-out wire mounting hole, and the positive and negative poles of DC power supply output end are respectively provided with second lead wire, wherein one of the second lead wires is electrically connected with left end lead-out wire through first power terminal post, and the other second lead wire is electrically connected with right end lead-out wire through second power terminal post.

[0009] Further, according to the magnetic induction line distribution dynamic demonstration device of the utility model, the base is further provided with a protection resistor, the protection resistor is connected in series on one of the second lead wires, and is used for limiting the current to protect the energized solenoid.

[0010] Further, according to the magnetic induction line distribution dynamic demonstration device of the utility model, the DC power supply is 5V 40A DC power supply, and the power of the protection resistor is above 150W.

[0011] Further, according to the magnetic induction line distribution dynamic demonstration device of the utility model, the left end lead-out wire, the right end lead-out wire, the second arc conductor and the third lead-out wire are all made of copper wire with a diameter of above 2mm, and the first arc conductor is made of copper pipe with an inner diameter matched with the copper wire; one end of the third lead-out wire is welded to the second arc conductor, the other end of the third lead-out wire is led out of the lead-out wire mounting hole to form a first connector on the demonstration platform, and the first connector is used for plug-in cooperation with the connector post arranged on the first lead wire to complete electrical connection; the ends of the left end lead-out wire, the right end lead-out wire and the second arc conductor led out of the energized solenoid mounting hole form a second connector on the demonstration platform, and the second connector is used for plug-in cooperation with the end of the first arc conductor to complete electrical connection.

[0012] Further, the magnetic induction line distribution dynamic demonstration device is characterized in that the base is provided with a power protection box, and the direct-current power supply and the protection resistor are arranged in the power protection box.

[0013] Further, the magnetic induction line distribution dynamic demonstration device is characterized in that the base is further provided with a storage box with a cover, and the storage box is used for storing the first arc-shaped conductor which is disassembled.

[0014] Further, the magnetic induction line distribution dynamic demonstration device is characterized in that the base is further provided with a micro vibration motor, the micro vibration motor is electrically connected with the direct-current power supply, the direct-current power supply is used for providing power supply for the micro vibration motor, the micro vibration motor is used for vibrating the base, and the first working switch is further arranged between the micro vibration motor and the direct-current power supply, and the first working switch is used for controlling the connection relationship between the direct-current power supply and the micro vibration motor.

[0015] Further, the magnetic induction line distribution dynamic demonstration device is characterized in that one end of the demonstration table is rotatably arranged on the base, the one end of the demonstration table is connected with the electric push rod arranged on the base, the electric push rod is electrically connected with the direct-current power supply, and the electric push rod is used for driving the demonstration table to rotate.

[0016] Further, the magnetic induction line distribution dynamic demonstration device is characterized in that, except that the edge of the top of the demonstration table is used as a dumping outlet, the other three edges are all provided with retaining tables.

[0017] Further, the magnetic induction line distribution dynamic demonstration device is characterized in that the base is further provided with a drawer, and the drawer is used for placing a mesh screen.

[0018] In conclusion, the magnetic induction line distribution dynamic demonstration device has the technical effects and advantages that the structure is simple, the use is convenient, the first arc-shaped conductor which is disassembled and cooperated with the first wire can display the distribution mode of the magnetic induction line around the electrically-conducted wire, i.e. the electrically-conducted straight wire, and can evolve into the distribution mode of the magnetic induction line around the electrically-conducted wire, i.e. the solenoid, students can more intuitively observe, and students can more clearly understand the whole process of the solenoid magnetic field formation. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a perspective view of the embodiment one in the utility model;

[0020] Figure 2 It is a front view of the embodiment one in the utility model after removing the power protection box;

[0021] Figure 3 It is a structure view when the embodiment one in the utility model displays the distribution mode of the magnetic induction line around the electrically-conducted wire.

[0022] Figure 4 is a circuit structure schematic diagram of the utility model; Figure 3

[0023] Figure 5 is the distribution form of the magnetic induction lines around the electrically conductive wire when the electrically conductive wire is one circle;

[0024] Figure 6 is the structure diagram when the utility model shows the distribution form of the magnetic induction lines around the electrically conductive wire when the electrically conductive wire is two circles;

[0025] Figure 7 is the distribution form of the magnetic induction lines around the electrically conductive wire when the electrically conductive wire is two circles;

[0026] Figure 8 is the distribution form of the magnetic induction lines around the electrically conductive wire when the electrically conductive wire is three circles;

[0027] Figure 9 is the distribution form of the magnetic induction lines around the electrically conductive wire when the electrically conductive wire is nine circles;

[0028] Figure 10 is the perspective view of the utility model in the embodiment two;

[0029] Figure 11 is the front view of the utility model in the embodiment two after removing the power protection box.

[0030] In the drawing: base 1, direct current power supply 2, second wire 21, protection resistance 3, electrically conductive solenoid 4, left end lead-out wire 41, right end lead-out wire 42, first arc-shaped conductor 43, second arc-shaped conductor 44, third lead-out wire 441, demonstration table 5, electrically conductive solenoid mounting hole 51, lead-out wire mounting hole 52, blocking table 53, first power supply terminal post 6, second power supply terminal post 7, first wire 8, plug-in post 81, iron powder storage bottle 9, power protection box 11, storage box 12, micro vibration motor 13, first working switch 14, electric push rod 15, second working switch 16, drawer 17. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to 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 the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0032] Embodiment one

[0033] Reference Figures 1-9 ​The dynamic demonstration device for the magnetic field distribution of an energized solenoid includes a base 1, a DC power supply 2, a protective resistor 3, an energized solenoid 4 and a demonstration table 5 arranged on the base 1; the demonstration table 5 is provided with an energized solenoid mounting hole 51 and a lead wire mounting hole 52, the energized solenoid 4 is horizontally arranged on the demonstration table 5 through the energized solenoid mounting hole 51, so that the part of the energized solenoid 4 exposed above the demonstration table 5 includes a plurality of regularly arranged first arc-shaped conductors 43, and the first arc-shaped conductors 43 are detachable; the part of the energized solenoid 4 exposed below the demonstration table 5 includes a left end lead wire 41, a right end lead wire 42 and a second arc-shaped conductor 44 connected between two adjacent first arc-shaped conductors 43, the end of the left end lead wire 41 is connected with a first power terminal 6 through the lead wire mounting hole 52, the end of the right end lead wire 42 is connected with a second power terminal 7 through the lead wire mounting hole 52, the second arc-shaped conductor 44 is further provided with a third lead wire 441, and the end of the third lead wire 441 is connected with a first connector for electrically connecting with a connector column 81 arranged on a first lead wire 8 connected with the first power terminal 6; the positive and negative poles of the output end of the DC power supply 2 are respectively provided with second lead wires 21, one of the second lead wires 21 is electrically connected with the left end lead wire 41 through the first power terminal 6, the other second lead wire 21 is electrically connected with the right end lead wire 42 through the second power terminal 7, and the protective resistor 3 is connected in series with one of the second lead wires 21 for limiting the current to protect the energized solenoid 4, thereby improving the service life of the device. Specifically, the DC power supply 2 is a 5V 40A DC power supply, the power of the protective resistor 3 is above 150W; the left end lead wire 41, the right end lead wire 42, the second arc-shaped conductor 44 and the third lead wire 441 are all made of copper wires with a diameter of above 2mm, one end of the third lead wire 441 is welded with the second arc-shaped conductor 44, the first arc-shaped conductor 43 is made of a copper pipe with an inner diameter matched with the copper wire, and the copper pipe is pluggable with the copper wire to achieve electrical connection; the ends of the left end lead wire 41, the right end lead wire 42 and the second arc-shaped conductor 44 of the energized solenoid 4 exposed from the energized solenoid mounting hole 51 form a second connector on the demonstration table 5, the second connector is used for plugging into the end of the first arc-shaped conductor 43 to achieve electrical connection, and the first arc-shaped conductor 43 is detachably arranged by plugging connection. In the embodiment, the protective resistor 3 is a modified battery tester, and the modification content is that one of the two resistors connected in parallel in the original battery tester is removed, and the other resistor is divided into two parts for parallel connection, and the total resistance value is about 0.1Ω, that is, the modification is completed. The modified battery tester can not only limit the current, but also indicate the current. The base 1 is made of a woodworking board, and the demonstration table 5 is made of an organic glass plate.

[0034] In order to protect the DC power supply 2 and the protection resistor 3, the base 1 is provided with a power protection box 11, and the DC power supply 2 and the protection resistor 3 are arranged in the power protection box 11, and the DC power supply 2 and the protection resistor 3 are protected by the power protection box 11.

[0035] In order to prevent the first arc-shaped conductor 43 from being removed and placed nowhere, resulting in the loss; the base 1 is further provided with a storage box 12, and the first arc-shaped conductor 43 is placed in the storage box 12, of course, the top of the storage box 12 can be provided with a box cover, which is covered on the top of the storage box 12, which can prevent dust and loss, and further improve the storage effect. Those skilled in the art understand that the iron powder storage bottle 9 can also be placed in the storage box 12, which is more convenient to take.

[0036] Demonstration preparation, the DC power supply 2 is connected to the power supply, and the power supply is provided to the energized solenoid 4, and at this time, the energized solenoid 4 is without the first arc-shaped conductor 43, and the first arc-shaped conductor 43 is all stored in the storage box 12, and the first wire 8 is in an unconnected state, and the entire circuit is not conducted.

[0037] Demonstration starts, first, show the students the distribution of the magnetic induction lines around the energized straight conductor; first, take the first arc-shaped conductor 43 from the storage box 12, and use the first arc-shaped conductor 43 to connect the two second connectors on the right end of the demonstration platform 5, so that the energized solenoid 4 has a solenoid; second, connect the first connector formed by the third lead-out line 441 on the second arc-shaped conductor 44 connected to the first arc-shaped conductor 43 and the plug-in post 81 on the first wire 8, complete the entire circuit conduction; third, take out the iron powder storage bottle 9 in the storage box 12, hold the mesh screen for screening iron powder above the demonstration platform 5, pour the iron powder into the mesh screen, and shake the mesh screen to evenly distribute the iron powder on the demonstration platform 5; knock the demonstration platform 5, so that the iron powder on the demonstration platform 5 is magnetized and moves under the action of the magnetic field, and the shape of the magnetic induction line is displayed, which is the distribution of the magnetic induction line around the energized straight conductor.

[0038] The distribution of the magnetic induction lines around the two turns of the energized conductor, i.e. the energized straight conductor, is shown by taking out the second first arc-shaped conductor 43 from the storage box 12, connecting the two second connectors on the left side of the first first arc-shaped conductor 43 by using the first arc-shaped conductor 43, so that the energized solenoid 4 has two turns of the solenoid; then the connector post 81 is pulled out of the first connector connected to the first first arc-shaped conductor 43 and connected to the first connector connected to the second first arc-shaped conductor 43, and the demonstration table 5 is knocked, the iron powder on the demonstration table 5 is magnetized and moves under the action of the magnetic field, showing the shape of the magnetic induction lines, which is the distribution of the magnetic induction lines around the two turns of the energized conductor, i.e. the energized straight conductor. By analogy, we gradually use the third first arc-shaped conductor 43, the fourth first arc-shaped conductor 43, and more first arc-shaped conductors 43 to show the distribution of the magnetic induction lines around three turns, four turns, and more turns of the energized conductor, i.e. the solenoid. It should be noted that when all the solenoids on the energized solenoid 4 are connected, the connector post 81 needs to be pulled out, and the entire circuit is energized.

[0039] The device can show the distribution of the magnetic induction lines around one turn of the energized conductor, i.e. the energized straight conductor, evolving into the distribution of the magnetic induction lines around multiple turns of the energized conductor, i.e. the solenoid, allowing students to observe more intuitively and enabling students to understand the entire process of the formation of the solenoid magnetic field more clearly.

[0040] Embodiment Two

[0041] Reference Figures 10-11 As shown, the difference between this embodiment and Embodiment One is that the base 1 is further provided with a micro-vibration motor 13, the micro-vibration motor 13 is electrically connected with the direct current power supply 2, the direct current power supply 2 is used to provide power to the micro-vibration motor 13, and the micro-vibration motor 13 and the direct current power supply 2 are further provided with a first working switch 14, the first working switch 14 is used to control the connection relationship between the direct current power supply 2 and the micro-vibration motor 13. The micro-vibration motor 13 provides vibration, which facilitates the magnetization and movement of the iron powder on the demonstration table 5 under the action of the magnetic field, thereby showing the shape of the magnetic induction lines, avoiding manual knocking of the demonstration table 5 to generate vibration. In this embodiment, in order to facilitate operation, the first working switch 14 is arranged on the power protection box 11.

[0042] In order to facilitate the collection of iron powder after the test, one end of the demonstration platform 5 is rotatably arranged on the base 1, the other end of the demonstration platform 5 is connected with the electric push rod 15 arranged on the base 1, the electric push rod 15 is electrically connected with the DC power supply 2, and is used to drive the demonstration platform 5 to rotate, and the second working switch 16 is arranged between the electric push rod 15 and the DC power supply 2, and is used to control the connection relationship between the DC power supply 2 and the electric push rod 15. The demonstration platform 5 is overturned by the electric push rod 15 to pour the iron powder, so that the collection of the iron powder is facilitated. In order to improve the collection effect, the top of the demonstration platform 5 is provided with three edges except the edge as the pouring outlet, and the three edges are provided with the retaining tables 53, the iron powder is blocked by the retaining tables 53, and the iron powder is prevented from sliding out from the other edges when the demonstration platform 5 is poured. In the embodiment, in order to facilitate the operation, the second working switch 16 is arranged on the power protection box 11, and the identification is arranged on the power protection box 11, so that the second working switch 16 and the first working switch 14 are distinguished by the identification.

[0043] Further, the drawer 17 is arranged on the base 1, and the mesh screen is arranged in the drawer 17, the mesh screen is used to screen the iron powder, and the iron powder is uniformly scattered on the demonstration platform 5. In the embodiment, the particle size of the iron powder is 200-500nm.

[0044] After the demonstration, the collection part for collecting the iron particles is placed at the pouring outlet, the second working switch 16 is opened, the demonstration platform 5 is overturned by the electric push rod 15 to pour the iron powder, the iron powder falls on the collection part from the pouring outlet, the first working switch 14 can also be opened during the pouring process, the vibration is provided by the micro vibration motor 13 to accelerate the pouring speed, and the collection efficiency of the iron powder is further improved.

Claims

1. A dynamic demonstration device for the magnetic field line distribution of a current-carrying solenoid, comprising a base, characterized in that, The base is equipped with a DC power supply, a energized solenoid coil, and a demonstration platform. The demonstration platform has mounting holes for the energized solenoid coil and lead wires. The energized solenoid coil is horizontally inserted through the mounting holes on the demonstration platform, such that the portion of the energized solenoid coil exposed above the demonstration platform includes multiple regularly arranged first arc-shaped conductors, and these first arc-shaped conductors are detachable. The portion of the energized solenoid coil exposed below the demonstration platform includes a left lead wire, a second arc-shaped conductor connecting two adjacent first arc-shaped conductors, and a right lead wire. The end of the left lead wire extends beyond the... The lead-out mounting hole is electrically connected to a first power terminal. A third lead-out is also provided on the second arc-shaped conductor, and the end of the third lead-out passes through the lead-out mounting hole and is detachably connected to a first wire. The first wire is used to electrically connect to the first power terminal. The end of the right lead-out passes through the lead-out mounting hole and is electrically connected to a second power terminal. The positive and negative terminals of the DC power output terminal are respectively provided with second wires. One of the second wires is electrically connected to the left lead-out through the first power terminal, and the other second wire is electrically connected to the right lead-out through the second power terminal.

2. The dynamic demonstration device for magnetic field line distribution according to claim 1, characterized in that, The base is also equipped with a protective resistor, which is connected in series with one of the second wires to limit the current and protect the energized solenoid.

3. The dynamic demonstration device for magnetic field line distribution according to claim 2, characterized in that, The DC power supply is a 5V 40A DC power supply, and the power of the protection resistor is above 150W.

4. The dynamic demonstration device for magnetic field line distribution according to claim 3, characterized in that, The left-end lead, right-end lead, second arc-shaped conductor, and third lead are all made of copper wire with a diameter of 2mm or more. The first arc-shaped conductor is made of copper tubing with an inner diameter adapted to the copper wire. One end of the third lead is welded to the second arc-shaped conductor, and the other end of the third lead passes through the lead mounting hole on the demonstration platform to form a first connector. The first connector is used to connect with the plug on the first conductor to complete the electrical connection. The ends of the left-end lead, right-end lead, and second arc-shaped conductor that pass through the energized solenoid mounting hole form a second connector on the demonstration platform. The second connector is used to connect with the end of the first arc-shaped conductor to complete the electrical connection.

5. The dynamic demonstration device for magnetic field line distribution according to claim 2, characterized in that, The base is equipped with a power protection box, and the DC power supply and the protection resistor are both located inside the power protection box.

6. The dynamic demonstration device for magnetic field line distribution according to claim 1, characterized in that, The base is also provided with a covered storage box, which is used to store the disassembled first arc-shaped conductor.

7. The dynamic demonstration device for magnetic field line distribution according to claim 1, characterized in that, The base is also equipped with a miniature vibration motor, which is electrically connected to a DC power supply. The DC power supply provides power to the miniature vibration motor, which causes the base to vibrate. A first working switch is also provided between the miniature vibration motor and the DC power supply, which controls the connection between the DC power supply and the miniature vibration motor.

8. The dynamic demonstration device for magnetic field line distribution according to claim 1, characterized in that, One end of the demonstration stand is rotatably mounted on the base. The other end of the demonstration stand is connected to an electric push rod mounted on the base. The electric push rod is electrically connected to a DC power supply and is used to drive the demonstration stand to rotate.

9. The dynamic demonstration device for magnetic field line distribution according to claim 8, characterized in that, The top of the demonstration platform has baffles on its three edges, except for the edge that serves as the pouring outlet.

10. The dynamic demonstration device for magnetic field line distribution according to claim 1, characterized in that, The base is also equipped with a drawer for storing a mesh screen.

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