A device for teaching induction electric shock for simulating a railway electric network

Abstract

A kind of induction electric shock teaching device for simulating railway power grid, including railway scene model and the electric controller for controlling each electronic element in railway scene model;The railway scene model includes two parallel normal simulation tracks and demonstration simulation track, and the normal simulation track is provided with corresponding normal simulation power grid, and the demonstration simulation track is provided with corresponding demonstration simulation power grid;Demonstration dummy is provided on the demonstration simulation power grid, and demonstration dummy and demonstration simulation power grid are provided with demonstration lamp band for showing current flow direction;Compared with prior art, by being provided with demonstration lamp band for showing current flow direction on demonstration dummy and demonstration simulation power grid, and being provided with simulation lamp band for showing normal operation of normal simulation power grid on normal simulation power grid, the process of real demonstration induction electric shock and through electric shock accident is demonstrated, the cause of induction electric shock accident is analyzed according to the scene simulation, and the effective measures for avoiding induction electric shock accident and the best method of emergency rescue are demonstrated.

Description

Technical Field

[0001] This utility model relates to the field of teaching model technology, specifically to an inductive electric shock teaching device for simulating railway power grids. Background Technology

[0002] Inductive current accidents usually refer to current induction caused by changes in electric or magnetic fields, which may lead to electric shock accidents or damage to other equipment. Through current on a line usually refers to the current transmission phenomenon in a power system caused by factors such as electromagnetic induction or capacitive coupling. There are two main types of through current: electromagnetic induction and capacitive coupling.

[0003] The induced current in the power grid is generated when current flows in a conductor, creating a magnetic field around the railway power grid. If another conductor moves within this magnetic field, the railway power grid will induce current. The induced current in the overhead contact line is generated by the electromagnetic interaction between the train and the contact line during operation. When one of the lines (up or down) loses power, the other line will generate induced current.

[0004] Electromagnetic induction occurs when a train is running on a railway and an electromagnetic field is formed between the train and the track. This is due to the electric current carried by the train itself and the electrical properties of the track, which induces a current under the influence of electromagnetic induction. This results in an induced current between the track and the train, as the train's motion relative to the track causes an induced electromotive force, which in turn causes the current to flow.

[0005] Railway maintenance work includes the maintenance of disconnect switches, sectional insulators, grounding insulators, isolation insulators, soft cross-span nodes, articulated phase and anchor joint air gaps, cross anchor non-energized connections or equipotential lines, as well as the connection between the pull-up line and the return line, the return line, overhead ground wire, PW line, the ground wire under the support post, return equipment, and the standard operating procedures for replacing long conductors with a length exceeding 5m.

[0006] Because railway maintenance work is complex, and because induced current and through current exist during the maintenance process, there are certain safety hazards for maintenance personnel when carrying out railway maintenance work.

[0007] Chinese patent CN111770610A discloses an electric shock current simulation system and method for live environments, including an electric shock current simulation model and multiple simulation circuits installed on the electric shock current simulation model. The electric shock current simulation model includes a model body and multiple non-reference electrodes installed at different parts of the surface of the model body. The simulation circuit includes an indicator light and a resistor connected in series with the indicator light. The indicator light and the resistor are electrically connected together between any two non-reference electrodes. The indicator light is used to adjust the indication state according to the current magnitude between the two non-reference electrodes corresponding to the indicator light.

[0008] The aforementioned electric shock current simulation system simulates electric shock current by installing various simulation circuits on the model body and simulating electric shock current through indicator lights on the simulation circuits. However, this simulation method, which only allows observation of the local current situation, makes it difficult to intuitively determine the source of induced current during railway maintenance, thus failing to serve as a warning for railway maintenance operations. Utility Model Content

[0009] The present invention aims to overcome the defects in the prior art and provide a teaching device for simulating railway power grid electric shock that has good demonstration effect and can be used for reverse teaching.

[0010] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: an inductive electric shock teaching device for simulating a railway power grid, comprising a railway scene model and an electronic controller for controlling various electronic components within the railway scene model; the railway scene model includes two parallel normal simulation tracks and a demonstration simulation track, the normal simulation track having a corresponding normal simulation power grid, and the demonstration simulation track having a corresponding demonstration simulation power grid; a demonstration dummy is provided on the demonstration simulation power grid, and demonstration light strips for displaying the direction of current flow are provided on the demonstration dummy and the demonstration simulation power grid; a simulation light strip for displaying the normal operation of the normal simulation power grid is provided on the normal simulation track, and a simulated locomotive that can move along the normal simulation track is provided on the normal simulation track.

[0011] As a preferred embodiment of this utility model, the demonstration simulated power grid includes several rows of demonstration simulated poles and demonstration simulated lines connected to the demonstration simulated poles, while the normal simulated power grid includes several rows of normal simulated poles and normal simulated lines connected to the normal simulated poles.

[0012] As a preferred embodiment of this utility model, the demonstration light strip includes a pole demonstration light strip located on a demonstration simulation pole and a dummy demonstration light strip located on a demonstration dummy, with the end of the dummy demonstration light strip located at the hand of the demonstration dummy.

[0013] As a preferred embodiment of this utility model, the demonstration simulation line is provided with a grounding wire, and a grounding lamp strip is provided on the grounding wire along the length of the grounding wire.

[0014] As a preferred embodiment of this utility model, a pull-wire insulator is provided on the grounding wire.

[0015] As a preferred embodiment of this utility model, both the demonstration light strip and the simulation light strip are flowing light strips.

[0016] As a preferred embodiment of this utility model, the top of the simulated locomotive is provided with a power connection frame that is connected to a normal simulated power grid.

[0017] As a preferred embodiment of this utility model, the railway scene model also includes a display for showing the control status of the electronic controller.

[0018] As a preferred embodiment of this utility model, the railway scene model is provided with an electric spark simulation lamp for simulating the effect of electric sparks and a smoke nozzle for simulating burn smoke in the middle.

[0019] As a preferred embodiment of this utility model, the railway scene model is equipped with a fire extinguishing box to prevent accidents.

[0020] Compared with existing technologies, this method uses demonstration lights on a mannequin and a simulated power grid to show the direction of current flow, and simulated lights on a normal simulated power grid to show the normal operation of the normal simulated power grid. This allows for a realistic demonstration of the process of electric shock accidents caused by induced current and current crossing. It also allows for analysis of the causes of induced electric shock accidents based on the on-site simulation, and demonstrates effective measures to avoid induced electric shock accidents and the best emergency rescue methods. This enables learners to deeply understand the dangers of induced current and current crossing on railway lines, as well as the serious consequences of misoperation and violations. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 It is a structural diagram of the demonstration dummy;

[0023] Figure 3 This is a schematic diagram of a normal simulated power grid.

[0024] Figure 4 It is a schematic diagram demonstrating the structure of a simulated power grid;

[0025] Figure 5 This is a schematic diagram of the grounding wire structure;

[0026] Attached labels: Railway scene model 1, Electric spark simulation light 11, Smoke sprayer 12, Electrical controller 2, Normal simulated track 3, Demonstration simulated track 4, Normal simulated power grid 5, Normal simulated pole 51, Normal simulated line 52, Simulated light strip 53, Simulated locomotive 54, Power connection frame 55, Demonstration simulated power grid 6, Demonstration simulated pole 61, Demonstration simulated line 62, Pole demonstration light strip 63, Grounding wire 64, Grounding light strip 65, Guy wire insulator 66, Demonstration dummy 7, Dummy demonstration light strip 71, Monitor 8, Fire extinguisher box 9. Detailed Implementation

[0027] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0028] like Figures 1-5As shown, an inductive electric shock teaching device for simulating a railway power grid includes a railway scene model 1 and an electronic controller 2 for controlling various electronic components within the railway scene model 1. The railway scene model 1 includes two parallel normal simulation tracks 3 and a demonstration simulation track 4. The normal simulation track 3 is equipped with a corresponding normal simulation power grid 5, and the demonstration simulation track 4 is equipped with a corresponding demonstration simulation power grid 6. The demonstration simulation power grid 6 is equipped with a demonstration dummy 7, and the demonstration dummy 7 and the demonstration simulation power grid 6 are equipped with demonstration light strips for displaying the direction of current flow. The normal simulation power grid 5 is equipped with a simulation light strip 33 for displaying the normal operation of the normal simulation power grid 5, and the normal simulation track 3 is equipped with a simulated locomotive 34 that can move along the normal simulation track 3.

[0029] Normal simulation track 3 is used to simulate a railway track in normal operation, and normal simulation power grid 5 is used to simulate the corresponding power grid of normal simulation track 3. Normal simulation power grid 5 is set along the length of normal simulation track 3. Similarly, demonstration simulation track 4 is used to simulate a railway track that needs maintenance, and demonstration simulation power grid 6 is set along the length of demonstration simulation track 4.

[0030] The demonstration simulation power grid 6 includes several rows of demonstration simulation poles 61 and demonstration simulation lines 62 connected to the demonstration simulation poles 61. The normal simulation power grid 5 includes several rows of normal simulation poles 51 and normal simulation lines 52 connected to the normal simulation poles 51.

[0031] The demonstration dummy 7 is used to simulate the operator performing maintenance on the demonstration simulated power grid 6. The demonstration dummy 7 is mounted on the demonstration simulated pole 61 by binding or adhesive and is used to simulate the operator in the work.

[0032] The demonstration light strip includes a pole demonstration light strip 63 located on the demonstration simulation pole 61 and a dummy demonstration light strip 71 located on the demonstration dummy 7, with the end of the dummy demonstration light strip 71 located at the hand of the demonstration dummy 7.

[0033] The pole demonstration light strip 63 is used to demonstrate the direction of current on the simulated circuit 62, and the dummy demonstration light strip 71 is used to demonstrate the current passing through the dummy 7. The dummy demonstration light strip 71 has a light strip connector at its end that connects to the pole demonstration light strip 63. The pole demonstration light strip 63 has a multi-segment structure, and the ends of the pole demonstration light strip 63 are set to correspond to each simulated pole 61. Therefore, by connecting the dummy demonstration light strip 71 to the pole demonstration light strip 63 on different simulated poles 61, the dummy 7 in different positions can be simulated.

[0034] The dummy demonstration light strip 71 and the pole demonstration light strip 63 are connected through a light strip connector to demonstrate the transmission of current. Since the operator's hands usually come into contact with the railway power grid first, the end of the dummy demonstration light strip 71 is located at the hand of the demonstration dummy 7, which can more intuitively demonstrate the transmission effect of the circuit.

[0035] The demonstration simulation line 62 is equipped with a grounding wire 64, a grounding lamp strip 65 is installed on the grounding wire 64 along its length, and a guy wire insulator 66 is installed on the grounding wire 64.

[0036] The grounding wire 64 is a safety protection measure during the operation and maintenance process. The grounding wire 64 is equipped with an insulator on the demonstration simulation line 62 to effectively prevent the guy wire from being accidentally energized and to achieve insulation between the guy wire and the ground.

[0037] Both the demonstration light strip and the simulation light strip 33 are flowing light strips. The flowing light strip achieves a dynamic flowing visual effect by controlling the brightness and color changes of the LED beads in the demonstration light strip and the simulation light strip 33, in conjunction with the algorithm, thereby intuitively simulating the direction of current flow.

[0038] The top of the simulator locomotive 34 is equipped with a power connection frame 35 that connects to the normal simulated power grid 5. The power connection frame 35 enables the simulator locomotive 34 to be powered on, thereby driving the simulator locomotive 34 to move along the length of the normal simulated track 3 via the motor inside the simulator locomotive 34.

[0039] The railway scene model 1 also includes a display 8 for displaying the control status of the electronic controller 2. The overall demonstration effect and status can be observed more intuitively through the display 8.

[0040] The railway scene model 1 has an electric spark simulation lamp 11 for simulating electric spark effects and a smoke nozzle 12 for simulating burn smoke in the middle.

[0041] The railway scene model 1 is equipped with a fire extinguishing box 9 to prevent accidents.

[0042] In actual use, the simulated light strip 53 simulates the normal operation of the current on the normal simulated power grid 5, while another demonstration simulated track 4 is de-energized for maintenance. At this time, the normal simulated power grid 5 generates a magnetic field under the action of the current. When the simulated dummy 7 performs maintenance on the demonstration simulated track 4, it is equivalent to the movement of the simulated dummy 7 cutting the magnetic induction lines in the magnetic field, thereby generating current, which truly demonstrates the generation process and hazards of induced electricity.

[0043] When the simulated locomotive 54 runs on the normal simulated track 3, the normal simulated power grid 5 generates a magnetic field under the action of the current. An electromagnetic field is formed between the simulated locomotive 54 and the normal simulated track 3, and an induced current is generated between the simulated locomotive 54 and the normal simulated track 3. Due to the movement of the simulated locomotive 54 relative to the normal simulated track 3, an induced electromotive force is generated, which causes the current to flow and forms a through current that poses a safety hazard to the simulated dummy 7.

[0044] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0045] Although this paper uses numerous reference numerals from the accompanying drawings—railway scene model 1, electric spark simulation light 11, smoke sprayer 12, electronic controller 2, normal simulated track 3, demonstration simulated track 4, normal simulated power grid 5, normal simulated pole 51, normal simulated line 52, simulated light strip 53, simulated locomotive 54, junction box 55, demonstration simulated power grid 6, demonstration simulated pole 61, demonstration simulated line 62, pole demonstration light strip 63, grounding wire 64, grounding light strip 65, guy wire insulator 66, demonstration dummy 7, dummy demonstration light strip 71, display 8, fire extinguisher box 9, etc.—the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A teaching device for simulating an inductive electric shock circuit in a railway power grid, comprising a railway scene model (1) and an electronic controller (2) for controlling various electronic components within the railway scene model (1); characterized in that, The railway scene model (1) includes two parallel normal simulation tracks (3) and demonstration simulation tracks (4). The normal simulation track (3) is equipped with a corresponding normal simulation power grid (5), and the demonstration simulation track (4) is equipped with a corresponding demonstration simulation power grid (6). The demonstration simulation power grid (6) is equipped with a demonstration dummy (7), and the demonstration dummy (7) and the demonstration simulation power grid (6) are equipped with demonstration light strips for displaying the direction of current flow. The normal simulation power grid (5) is equipped with a simulation light strip (33) for displaying the normal operation of the normal simulation power grid (5), and the normal simulation track (3) is equipped with a simulated locomotive (34) that can move along the normal simulation track (3).

2. The inductive electric shock teaching device for simulating a railway power grid according to claim 1, characterized in that, The demonstration simulation power grid (6) includes several rows of demonstration simulation poles (61) and demonstration simulation lines (62) connected to the demonstration simulation poles (61). The normal simulation power grid (5) includes several rows of normal simulation poles (51) and normal simulation lines (52) connected to the normal simulation poles (51).

3. The inductive electric shock teaching device for simulating a railway power grid according to claim 2, characterized in that, The demonstration light strip includes a pole demonstration light strip (63) located on the demonstration simulation pole (61) and a dummy demonstration light strip (71) located on the demonstration dummy (7), with the end of the dummy demonstration light strip (71) located at the hand of the demonstration dummy (7).

4. The inductive electric shock teaching device for simulating a railway power grid according to claim 3, characterized in that, The demonstration simulation line (62) is provided with a grounding wire (64), and a grounding lamp strip (65) is provided on the grounding wire (64) along the length of the grounding wire (64).

5. The inductive electric shock teaching device for simulating a railway power grid according to claim 4, characterized in that, The grounding wire (64) is provided with a pull wire insulator (66).

6. The inductive electric shock teaching device for simulating a railway power grid according to claim 3, characterized in that, Both the demonstration light strip and the simulated light strip (33) are flowing light strips.

7. The inductive electric shock teaching device for simulating a railway power grid according to claim 1, characterized in that, The simulated locomotive (34) is equipped with a power connection frame (35) on its top, which is connected to the normal simulated power grid (5).

8. The inductive electric shock teaching device for simulating a railway power grid according to claim 1, characterized in that, The railway scene model (1) also includes a display (8) for displaying the control status of the electronic controller (2).

9. The inductive electric shock teaching device for simulating a railway power grid according to claim 1, characterized in that, The railway scene model (1) is equipped with an electric spark simulation lamp (11) for simulating the electric spark effect and a smoke nozzle (12) for simulating burn smoke in the middle.

10. The inductive electric shock teaching device for simulating a railway power grid according to claim 1, characterized in that, The railway scene model (1) is equipped with a fire extinguishing box (9) to prevent accidents.

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