Special material combustion demonstration training system

Abstract

The present invention relates to the field of fire fighting teaching, specifically, a special material combustion demonstration training system, wherein a water-encountered combustion experimental device comprises a first transparent protective cover, a material guide trough and a push rod, the water-encountered combustion material is placed in the material guide trough and pushed into a tray carrying water by the push rod, the spontaneous combustion experimental device comprises a second transparent protective cover and a placement table, a first heating device is arranged at the lower side of the placement table, the dust combustion experimental device comprises a third transparent protective cover, a dust cover, an air duct and an ignition device, the air outlet end of the air duct and the ignition end of the ignition device are both extended into the dust cover, the combustion water-encountered experimental device comprises a fourth transparent protective cover, an oil box and a water injection pipe, the water inlet end of the water injection pipe is provided with a water injection control valve, the water outlet end extends to the top of the oil box, the lower side of the oil box is provided with a second heating device, the first heating device, the fan, the ignition device, the water injection control valve, and the second heating device are all controlled by a control system. The present invention can truly simulate the process of combustion and explosion of special materials.

Description

Technical Field

[0001] The invention relates to the field of fire fighting teaching, in particular to a special material combustion demonstration training system. Background Art

[0002] Many unexpected situations may occur in people's production and life, such as explosion when burning meets water, dust explosion, etc. In fact, such dangers are not far away from us. However, most people, including front-line fighters in firefighting and rescue positions, do not understand the combustion characteristics of special substances, such as what kind of dust will have explosion risks, what kind of burning will explode when meeting water, etc., and there is no corresponding demonstration experience and training equipment in the existing technology. Summary of the invention

[0003] The purpose of the present invention is to provide a special material combustion demonstration training system, including a water combustion experimental device, a spontaneous combustion experimental device, a dust combustion experimental device and a combustion water experimental device, which can truly simulate the combustion and explosion process of special materials, so that trainees can intuitively understand the conditions, states, and treatment methods of the combustion of special materials, and truly and effectively make up for the problem that front-line rescue personnel usually have no relevant experience and insufficient training.

[0004] The objective of the present invention is achieved through the following technical solutions:

[0005] A special material combustion demonstration training system includes a water combustion experimental device, a spontaneous combustion experimental device, a dust combustion experimental device, a combustion water experimental device and a control system. The water combustion experimental device includes a first experimental table, and a first transparent protective cover is provided on the first experimental table, and a tray for holding water is provided in the first transparent protective cover, and a material guide trough and a push rod are provided on one side of the first transparent protective cover, and the water combustion material is placed in the material guide trough and pushed into the tray by the push rod. The spontaneous combustion experimental device includes a second experimental table, and a second transparent protective cover is provided on the second experimental table, and a placement table for holding the spontaneous combustion material is provided in the second transparent protective cover, and a first heating device is provided on the lower side of the placement table. The dust combustion experimental device includes a third experimental table, an air duct and an ignition device, and the third experiment table is provided with a second transparent protective cover. A third transparent protective cover is provided on the test bench, a dust cover is provided inside the third transparent protective cover, an air duct is connected to a fan, and the air outlet end of the air duct and the ignition end of the ignition device are both extended into the dust hood, the combustion and water experimental device comprises a fourth test bench and a water injection pipe, a fourth transparent protective cover is provided on the fourth test bench, an oil box is provided inside the fourth transparent protective cover, a water injection control valve is provided at the water inlet end of the water injection pipe, and the water outlet end extends into the fourth transparent protective cover and is arranged above the oil box, a second heating device is provided on the lower side of the oil box, the first transparent protective cover, the second transparent protective cover, the third transparent protective cover and the fourth transparent protective cover are all communicated with an exhaust duct, and the first heating device, the fan, the ignition device, the water injection control valve and the second heating device are all controlled by the control system.

[0006] The material guide chute of the water-combustion experimental device is provided with a slide groove, and the part of the push rod located in the first transparent protective cover slides along the slide groove, a limit plate is provided in the front end of the slide groove, a push plate is provided at the front end of the push rod, and the push plate is limited by the limit plate when retreating, and the water-combustible material is placed in the slide groove on the front side of the push plate.

[0007] The material guide trough is provided with a bracket, the bracket is fixedly mounted on the table top of the first experimental table, and the slide trough is horizontally arranged at the upper end of the bracket.

[0008] A supporting sleeve is provided on one side of the first transparent protective cover, the push rod passes through the supporting sleeve, and a handle is provided on the part of the push rod located outside the first transparent protective cover.

[0009] The placement table of the spontaneous combustion experimental device is hollow inside, and the upper surface and surrounding side walls of the placement table are all provided with heat-transmitting holes. The first heating device is fixedly installed in the second experimental table, and the upper heating end extends into the hollow part of the placement table.

[0010] The first heating device is a hair dryer.

[0011] The ignition device and the fan in the dust combustion experimental device are both fixedly installed in the third experimental table. The air duct is L-shaped, and the lower end of the vertical section is fixedly connected to the fan, the horizontal section extends into the dust hood, and the outlet faces the discharge area where the dust is placed.

[0012] A water injection pipe bracket is provided on the fourth experimental table of the combustion and water experiment device, and a portion of the water injection pipe located outside the fourth transparent protective cover is installed on the water injection pipe bracket.

[0013] The water injection control valve is an electric ball valve, and the second heating device is an electric ceramic stove.

[0014] The first transparent protective cover, the second transparent protective cover, the third transparent protective cover, and the fourth transparent protective cover are all opened at the upper ends and communicated with the exhaust duct, and an explosion-proof exhaust fan controlled by the control system is provided at one end of the exhaust duct, and the first transparent protective cover, the second transparent protective cover, the third transparent protective cover, and the fourth transparent protective cover are all provided with doors.

[0015] The advantages and positive effects of the present invention are:

[0016] 1. The present invention includes a water combustion test device, a spontaneous combustion test device, a dust combustion test device and a combustion water test device, and each device controls the movement of components through a control system, such as heating by a first heating device in the spontaneous combustion test device, rotation of a fan in the dust combustion test device to supply air, gas supply and ignition by an ignition device, heating of oil in the combustion water test device, addition of water, etc., which can truly simulate the combustion and explosion process of special substances, and truly and effectively make up for the problem that front-line rescue personnel usually have no relevant experience and insufficient training.

[0017] 2. The combustion and explosion processes of each device of the present invention are confined within a transparent protective cover, and the process is safe and controllable and convenient for personnel to observe.

[0018] 3. Each device of the present invention exhausts air through an exhaust duct to ensure the on-site environment without polluting the air.

[0019] 4. The present invention is simple and convenient to operate and can be repeatedly used for demonstration. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall layout of the present invention,

[0021] Figure 2 for Figure 1 A top view of the water combustion experiment device in the figure.

[0022] Figure 3 for Figure 2 AA view in

[0023] Figure 4 for Figure 3 A partial enlarged view of the push rod in the figure.

[0024] Figure 5 for Figure 3 Schematic diagram of the guide trough structure in

[0025] Figure 6 for Figure 1 A top view of the spontaneous combustion experimental device in the figure.

[0026] Figure 7 for Figure 6 The main view of the spontaneous combustion experimental device in the figure.

[0027] Figure 8 for Figure 6 Left view of the spontaneous combustion experimental device in the figure.

[0028] Fig. 9 for Figure 1 A top view of the dust combustion experimental device in the figure.

[0029] Fig.10 for Fig. 9 In the BB view,

[0030] Fig.11 for Fig.10 The igniter schematic diagram in

[0031] Fig.12 for Figure 1 A top view of the combustion and water experiment device in the figure.

[0032] Fig.13 for Fig.12 Front view of the combustion and water experimental apparatus.

[0033] Among them, 1 is a water combustion experimental device, 101 is a tray, 102 is a first transparent protective cover, 103 is a first experimental table, 104 is a push rod, 1041 is a push plate, 105 is a guide trough, 1051 is a slide trough, 1052 is a bracket, 1053 is a limit plate, 106 is a support sleeve, 107 is a positioning nut, 2 is a spontaneous combustion experimental device, 201 is a second experimental table, 202 is a second transparent protective cover, 203 is a placement table, 204 is a first heating device, 3 is a dust combustion experimental device, 301 is a third experimental table, 302 is a third transparent protective cover, 303 is a point ignition device, 3031 is the automatic ignition joint, 3032 is the gas tank, 3033 is the power switch, 3034 is the manual ignition button, 3035 is the manual regulating valve, 3036 is the solenoid valve, 304 is the dust hood, 3041 is the discharge area, 305 is the air duct, 306 is the fan, 4 is the combustion and water experimental device, 401 is the fourth experimental table, 402 is the fourth transparent protective cover, 403 is the second heating device, 404 is the oil box, 405 is the water injection pipe, 406 is the water injection control valve, 407 is the water injection pipe bracket, 408 is the pipe clamp, 5 is the exhaust duct, and 6 is the explosion-proof exhaust fan. DETAILED DESCRIPTION

[0034] The present invention will be further described below in conjunction with the accompanying drawings.

[0035] like Figures 1 to 13 As shown, the present invention comprises a water combustion experimental device 1, a spontaneous combustion experimental device 2, a dust combustion experimental device 3, a combustion water experimental device 4 and a control system, wherein as Figures 2 to 5 As shown, the water combustion experimental device 1 includes a first experimental table 103, and the first experimental table 103 is provided with a first transparent protective cover 102 and a tray 101 containing water arranged in the first transparent protective cover 102, a material guide trough 105 and a push rod 104 are provided on one side of the first transparent protective cover 102, and the water combustion material is placed in the material guide trough 105 and pushed into the tray 101 by the push rod 104, as shown in FIG. Figures 6 to 8 As shown, the self-ignition experimental device 2 includes a second experimental table 201, and the second experimental table 201 is provided with a second transparent protective cover 202 and a placement table 203 for carrying the self-ignition material arranged in the second transparent protective cover 202, and a first heating device 204 is provided at the lower side of the placement table 203. Figures 9-11 As shown, the dust combustion experimental device 3 includes a third experimental table 301, an air duct 305 and an ignition device 303. The third experimental table 301 is provided with a third transparent protective cover 302 and a dust cover 304 arranged in the third transparent protective cover 302. The air duct 305 is connected to a fan 306, and the air outlet end of the air duct 305 and the ignition end of the ignition device 303 are both extended into the dust cover 304. Figures 12-13As shown, the combustion water test device 4 includes a fourth test bench 401 and a water injection pipe 405. The fourth test bench 401 is provided with a fourth transparent protective cover 402 and an oil box 404 arranged in the fourth transparent protective cover 402. The water inlet end of the water injection pipe 405 is provided with a water injection control valve 406, and the water outlet end extends into the fourth transparent protective cover 402 and is arranged above the oil box 404. The lower side of the oil box 404 is provided with a second heating device 403, as shown in FIG. Figure 1 As shown, the first transparent protective cover 102, the second transparent protective cover 202, the third transparent protective cover 302, and the fourth transparent protective cover 402 are all connected to an exhaust duct 5, and an explosion-proof exhaust fan 6 is provided at one end of the exhaust duct 5. The first heating device 204, the fan 306, the ignition device 303, the water injection control valve 406, the second heating device 403 and the explosion-proof exhaust fan 6 are all controlled by the control system.

[0036] like Figures 2 to 5 As shown, the guide trough 105 of the water combustion experimental device 1 includes a slide 1051 and a bracket 1052, wherein the bracket 1052 is fixedly mounted on the table top of the first experimental table 103, the slide 1051 is horizontally arranged at the upper end of the bracket 1052, the push rod 104 of the water combustion experimental device 1 located in the first transparent protective cover 102 is placed in the slide 1051 and slides along the slide 1051, and the push rod 104 located outside the first transparent protective cover 102 is provided with a handle for the convenience of personnel to push the push rod 104, as shown in FIG. Figure 5 As shown, a limit plate 1053 is provided in the front end of the slide slot 1051. Figure 4 As shown, a push plate 1041 is provided at the front end of the push rod 104, and when the push plate 1041 is fully retracted, it is limited by the limit plate 1053, and the water-combustible material is placed in the slide groove 1051 on the front side of the push plate 1041. Then the staff pushes the push rod 104 forward, and uses the push plate 1041 to push the water-combustible material out of the slide groove 1051 and into the tray 101.

[0037] like Figure 4 As shown, a support sleeve 106 is provided on one side of the first transparent protective cover 102 of the water combustion experimental device 1, and the push rod 104 passes through the support sleeve 106. An end cap is provided on the outer side of the support sleeve 105 and a positioning nut 107 is provided on the inner side. The support sleeve 105 is clamped and fixed to the side plate of the first transparent protective cover 102 by the joint action of the positioning nut 107 and the end cap.

[0038] like Figures 6-7As shown, the placement table 203 of the spontaneous combustion experimental device 2 is hollow inside and has an inverted concave cross section, and the upper table surface and surrounding side walls of the placement table 203 are evenly provided with heat-transmitting holes. The first heating device 204 in the spontaneous combustion experimental device 2 is fixedly installed in the second experimental table 201 and the upper heating end extends into the hollow part of the placement table 203. The spontaneous combustion material is placed on the upper table surface of the placement table 203. The heat generated by the first heating device 204 acts on the spontaneous combustion material through the heat-transmitting holes on the placement table 203. In this embodiment, the first heating device 204 is an electric hair dryer, which is a commercially available product.

[0039] like Figures 9-11 As shown, the main body of the ignition device 303 and the fan 306 in the dust combustion experimental device 3 are fixedly installed in the third experimental table 301, the air duct 305 is L-shaped, and the lower end of the vertical section is fixedly connected to the fan 306, the horizontal section extends into the dust hood 304, and the outlet faces the discharge area 3041 for placing dust.

[0040] The ignition device 303 is a well-known technology in the art and is a commercially available product, such as Fig.11 As shown, the ignition device 303 of this embodiment includes an automatic ignition connector 3031 and a gas tank 3032. The automatic ignition connector 3031 is provided with a power switch 3033 and a manual ignition button 3034. The gas outlet of the gas tank 3032 is provided with a manual regulating valve 3035 and a solenoid valve 3036. The ignition device 303 in this embodiment is a pulse ignition device, which performs ignition by controlling the action of the pulse automatic ignition connector 3031 and the solenoid valve 3036 through a control system.

[0041] like Figures 12-13 As shown, a water injection pipe bracket 407 is provided on the fourth experimental table 401 of the combustion water experimental device 4, and the portion of the water injection pipe 405 located outside the fourth transparent protective cover 402 is installed on the water injection pipe bracket 407. In this embodiment, a pipe clamp 408 is provided at the top of the water injection pipe bracket 407 to clamp and fix the water injection pipe 405, and the portion of the water injection pipe 405 located outside the fourth transparent protective cover 402 is connected to the water injection control valve 406. In this embodiment, the water injection control valve 406 is an electric ball valve, which is controlled by the control system. In addition, the oil box 404 is made of stainless steel.

[0042] like Figures 12-13 As shown, in this embodiment, the second heating device 403 is an electric ceramic stove, which is a well-known technology in the art and a commercially available product. The second heating device 403 can heat the lower side of the bottom end and the surrounding of the oil box 404.

[0043] In this embodiment, the first transparent protective cover 102, the second transparent protective cover 202, the third transparent protective cover 302, and the fourth transparent protective cover 402 are all opened at the upper end and communicated with the exhaust duct 5. Each transparent protective cover is made of tempered glass with a thickness of 10 mm, and is provided with a door for discharging or cleaning. In addition, each transparent protective cover is provided with a manhole and a manhole cover. The manhole cover and the protective cover are fixed by a clamp, and the clamp and the protective cover are connected by bolts, and a sealing gasket is provided on the joint surface of the bolt and the protective cover, which is a well-known technology in the art.

[0044] In this embodiment, the first experimental table 103, the second experimental table 201, the third experimental table 301, and the fourth experimental table 401 are all made of 304 stainless steel. Figure 8 As shown, shutter structures are installed on both sides of the second experimental platform 201 and the fourth experimental platform 401.

[0045] The working principle of the present invention is:

[0046] Each device in the present invention can be selected and used according to needs, and the specific application of each device is as follows:

[0047] 1. Experimental device for combustion in contact with water1.

[0048] Combustible substances in contact with water refer to substances that react violently when in contact with water, moist air, water-containing substances, etc., releasing flammable gases and a large amount of heat, which in turn cause combustion or explosion, or may form explosive mixed gases, thus causing danger. Such substances include: Na, K, Ca3P2 (calcium phosphide), NaNH2 (sodium amide), LiAlH4 (lithium aluminum hydride), NaBH4 (sodium borohydride), etc.

[0049] During the experiment, the operator first opens the door of the first transparent protective cover 102, then pours water into the tray 101 to half the height of the tray 101, places the water-combustible material in the guide groove 105, and puts it in front of the push plate 1041 of the push rod 104, gently closes the door, and then the operator slowly pushes the push rod 104 to push the water-combustible material out of the guide groove 105 and into the tray 101. The reaction of the material in contact with water can then be observed. After the experiment is completed, the experimental supplies are sorted out, and the exhaust gas generated during the experiment can be discharged through the exhaust duct 5.

[0050] 2. Spontaneous combustion experimental device 2.

[0051] Spontaneous combustion substances refer to substances that can generate heat in normal temperature air due to oxidation, decomposition, polymerization or fermentation when there is no external fire source, and gradually accumulate heat to reach the ignition point and cause combustion. For example, white phosphorus is a substance that is prone to spontaneous combustion. Its ignition point is 40°C, but the heat generated by friction or slow oxidation may cause the local temperature to reach 40°C and burn. Therefore, it cannot be said that white phosphorus will not spontaneously combust when the temperature is below 40°C.

[0052] During the experiment, the operator first opens the door of the second transparent protective cover 202, then quickly takes out about 1 cubic centimeter of the self-igniting substance (white phosphorus in this embodiment) from the storage bottle, and places it on the placement table 203, gently closes the door, and then controls the first heating device 204 (hair dryer) to increase the temperature of the placement table 203, waits for the self-igniting substance to self-ignite and observes. After the experiment, the experimental supplies are sorted out.

[0053] 3. Dust combustion experimental device3.

[0054] First, check and adjust the ignition device 303 and the fan 306, then weigh out 20g of flour with an electronic scale and put it in a transparent cup, then put the flour under the air outlet of the air duct 305, then the control system controls the power to turn on the ignition device 303, the automatic ignition connector 3031 and the solenoid valve 3036 work at the same time, then open the manual regulating valve 3035 to adjust the gas flow, and observe the flame height at the same time. The flame height is controlled at about 80mm. A flame that is too high or too low will affect the experimental effect. Then, the control system is operated to start the fan 306, and the fan 306 stops running for about 3 seconds, and then the explosion effect in the dust cover 304 is observed. An aluminum cover plate can be placed on the upper end of the dust cover 304, and the explosion effect can be judged by observing whether the cover plate is pushed open. If the explosion phenomenon is not obvious, the manual regulating valve 3035 or the running time of the fan 306 can be appropriately adjusted, and then the operation experiment is repeated several times according to the above steps until the best explosion effect appears. At this time, the position of the manual regulating valve 3035 and the running time of the fan 306 are finally determined, and then the position of the manual regulating valve 3035 remains unchanged, and there is no need to adjust the manual regulating valve 3035 in subsequent experiments. After the experiment is completed, the experimental supplies are sorted out, and the residues in the third transparent protective cover 302 and the dust cover 304 are cleaned up.

[0055] 4. Combustion and water experimental device 4.

[0056] Prepare 15ml oil and 20ml water with a measuring cup, pour 15ml oil into the oil box 404, check the water injection control valve 406 to make it in a closed state, then pour 20ml water from the water inlet at the upper end of the water injection control valve 406, then the control system controls the second heating device 403 (electric ceramic stove) to be powered on and continuously heat the oil in the oil box 404, observe the state of the oil, after 1 minute, the oil begins to smoke, and after about 3 minutes, the oil begins to burn, then control to open the water injection control valve 406, so that water flows into the oil box 404 through the water injection pipe 406, and the flame bursts instantly, then close the second heating device 403, and the second heating device 403 (electric ceramic stove) has a built-in fan to achieve heat dissipation. After the experiment is completed, organize the experimental supplies and clean the oil stains on the laboratory table.

[0057] The present invention integrates various devices together, and automatically controls the movement of components of each device through the control system, such as the heating of the first heating device 204 in the spontaneous combustion experimental device 2, the rotation of the fan 306 in the dust combustion experimental device 3 to supply air, the gas supply and ignition of the ignition device 303, the heating of the oil in the combustion and water experimental device 4, the water adding process, etc. In addition, each device realizes unified exhaust through the exhaust duct 5 to ensure the on-site environment.

[0058] Each device of the present invention is developed and designed with reference to existing relevant standards to realistically simulate the combustion and explosion process of special substances, so that trainees can intuitively understand the conditions, status, and treatment methods of the combustion of special substances, truly and effectively making up for the problem that front-line rescue personnel usually have no relevant experience and insufficient training.

Claims

1. A special material combustion demonstration training system, characterized by: The invention comprises a water combustion test device (1), a spontaneous combustion test device (2), a dust combustion test device (3), a combustion water test device (4) and a control system. The water combustion test device (1) comprises a first test bench (103), and the first test bench (103) is provided with a first transparent protective cover (102). A tray (101) for containing water is provided in the first transparent protective cover (102). A material guide trough (105) and a push rod (104) are provided on one side of the first transparent protective cover (102). The water combustion material is placed in the material guide trough (105) and is pushed through the push rod (104). 104) is pushed and dropped into the tray (101), the spontaneous combustion experimental device (2) comprises a second experimental table (201), and the second experimental table (201) is provided with a second transparent protective cover (202), a placement table (203) for carrying the spontaneous combustion substance is provided inside the second transparent protective cover (202), and a first heating device (204) is provided at the lower side of the placement table (203), and the dust combustion experimental device (3) comprises a third experimental table (301), an air duct (305) and an ignition device (303), and the third experimental table (301) is provided with a third transparent protective cover (302) The third transparent protective cover (302) is provided with a dust cover (304), the air duct (305) is connected to a fan (306), and the air outlet end of the air duct (305) and the ignition end of the ignition device (303) are both extended into the dust cover (304), the combustion water experimental device (4) comprises a fourth experimental table (401) and a water injection pipe (405), the fourth experimental table (401) is provided with a fourth transparent protective cover (402), the fourth transparent protective cover (402) is provided with an oil box (404), and the water inlet end of the water injection pipe (405) is provided with a water injection control valve ( 406), the water outlet end extends into the fourth transparent protective cover (402) and is arranged above the oil box (404), a second heating device (403) is arranged at the lower side of the oil box (404), the first transparent protective cover (102), the second transparent protective cover (202), the third transparent protective cover (302), and the fourth transparent protective cover (402) are all connected to an exhaust duct (5), and the first heating device (204), the fan (306), the ignition device (303), the water injection control valve (406), and the second heating device (403) are all controlled by the control system; The guide trough (105) of the water combustion experimental device (1) is provided with a slide groove (1051), and the part of the push rod (104) located in the first transparent protective cover (102) slides along the slide groove (1051), a limit plate (1053) is provided in the front end of the slide groove (1051), and a push plate (1041) is provided at the front end of the push rod (104), and when the push plate (1041) is retracted, it is limited by the limit plate (1053), and the water combustion material is placed in the slide groove (1051) on the front side of the push plate (1041); The ignition device (303) and the fan (306) in the dust combustion experimental device (3) are both fixedly installed in the third experimental table (301); the air duct (305) is L-shaped, and the lower end of the vertical section is fixedly connected to the fan (306), the horizontal section extends into the dust cover (304), and the outlet faces the discharge area (3041) for placing dust; The ignition device (303) comprises an automatic ignition joint (3031) and a gas tank (3032); the automatic ignition joint (3031) is provided with a power switch (3033) and a manual ignition button (3034); the gas outlet of the gas tank (3032) is provided with a manual regulating valve (3035) and a solenoid valve (3036); the automatic ignition joint (3031) and the solenoid valve (3036) are controlled by the control system.

2. The special material combustion demonstration training system according to claim 1 is characterized in that: The material guide trough (105) is provided with a bracket (1052), the bracket (1052) is fixedly mounted on the table surface of the first experimental table (103), and the slide groove (1051) is horizontally arranged at the upper end of the bracket (1052).

3. The special material combustion demonstration training system according to claim 1 is characterized by: A supporting sleeve (106) is provided on one side of the first transparent protective cover (102), the push rod (104) passes through the supporting sleeve (106), and a handle is provided on the part of the push rod (104) located outside the first transparent protective cover (102).

4. The special material combustion demonstration training system according to claim 1 is characterized in that: The placement table (203) of the spontaneous combustion experimental device (2) is hollow inside, and the upper surface and surrounding areas of the placement table (203) are evenly provided with heat-transmitting holes. The first heating device (204) is fixedly installed in the second experimental table (201) and the upper heating end extends into the hollow part of the placement table (203).

5. The special material combustion demonstration training system according to claim 1 or 4, characterized in that: The first heating device (204) is a hair dryer.

6. The special material combustion demonstration training system according to claim 1 is characterized by: A water injection pipe bracket (407) is provided on the fourth experimental table (401) of the combustion water experimental device (4), and the portion of the water injection pipe (405) located outside the fourth transparent protective cover (402) is installed on the water injection pipe bracket (407).

7. The special material combustion demonstration training system according to claim 1 is characterized by: The water injection control valve (406) is an electric ball valve, and the second heating device (403) is an electric ceramic stove.

8. The special material combustion demonstration training system according to claim 1 is characterized by: The first transparent protective cover (102), the second transparent protective cover (202), the third transparent protective cover (302), and the fourth transparent protective cover (402) are all opened at the upper ends and communicate with the exhaust duct (5), and an explosion-proof exhaust fan (6) controlled by the control system is provided at one end of the exhaust duct (5), and the first transparent protective cover (102), the second transparent protective cover (202), the third transparent protective cover (302), and the fourth transparent protective cover (402) are all provided with doors.

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