Improved high-pressure jet fire suppression research experiment device

Abstract

The utility model discloses an improved high-pressure jet fire suppression research experimental device in the technical field of high-pressure jet fire suppression research, which comprises a discharge bin and a data acquisition control system, a connecting pipe is mounted on the left side of the discharge bin, and a high-pressure electromagnetic valve is arranged in the connecting pipe; a PVC film is arranged at the end, away from the connecting pipe, in the discharging bin, a gas inlet pipe is connected to the end, close to the high-pressure electromagnetic valve, of the left side of the discharging bin, a high-pressure storage tank is installed at the end, away from the discharging bin, of the high-pressure electromagnetic valve, and a gas supply system is arranged at the end, away from the discharging bin, of the high-pressure storage tank. The gas supply system, the high-pressure storage tank, the discharge bin, the dust spraying system and the liquid spraying system are arranged in a matched mode, the dust spraying system sprays out a proper amount of powder through a dust spraying head, the liquid spraying system sprays a proper amount of liquid through a liquid spraying head, and therefore gas dust and liquid mist in the discharge bin can be controlled, and the dust spraying efficiency is improved. And the explosion venting flame evolution process can be studied more visually.

Description

Technical Field

[0001] This utility model relates to the technical field of high-pressure jet fire suppression research, and in particular to an improved experimental device for high-pressure jet fire suppression research. Background Technology

[0002] Hydrogen energy, with its pollution-free and high energy efficiency, is gradually ushering in a new era of renewable energy use. Hydrogen storage is a crucial link in the entire process of hydrogen production, transportation, and use. In recent years, hydrogen energy has gained widespread favor worldwide as a strategic clean energy source. Hydrogen-powered vehicles, hydrogen fuel cells, and hydrogen refueling stations are all equipped with high-pressure hydrogen storage systems.

[0003] Hydrogen storage technology is widely used, but sudden leaks can easily lead to fires and explosions due to spontaneous combustion, causing casualties and property damage. In many cases, emergency releases of high-pressure hydrogen pose safety risks. Accidental release of high-pressure hydrogen can induce spontaneous combustion, which can be accompanied by an explosion. Therefore, it is necessary to study the suppression and inerting of jet fires generated by high-pressure hydrogen leaks. Based on this, we propose an improved experimental apparatus for suppressing high-pressure jet fires. Utility Model Content

[0004] In order to improve the current hydrogen storage technology mentioned above, which is widely used but prone to fire and explosion accidents due to spontaneous combustion in the event of a sudden leak, causing casualties and property damage, and in many cases, the emergency discharge of high-pressure hydrogen has safety issues, this utility model provides an improved high-pressure jet fire suppression research experimental device.

[0005] This utility model provides an improved experimental device for high-pressure jet fire suppression research, which adopts the following technical solution:

[0006] An improved experimental apparatus for high-pressure jet fire suppression includes a venting chamber and a data acquisition and control system. A connecting pipe is installed on the left side of the venting chamber, and a high-pressure solenoid valve is installed inside the connecting pipe. A PVC film is installed at the end of the venting chamber away from the connecting pipe. A gas inlet pipe is connected to the end of the left side of the venting chamber near the high-pressure solenoid valve. A high-pressure storage tank is installed at the end of the high-pressure solenoid valve away from the venting chamber. A gas supply system is installed at the end of the high-pressure storage tank away from the venting chamber.

[0007] The inner top wall of the venting chamber is equipped with a top plate. A round rod is connected to the bottom of the top plate by fixing screws. A slide rail is provided on the outer side of the round rod. A slide block is slidably installed on the slide rail. A fixing knob is provided on one side of the slide block. A liquid spray head and a dust spray head are respectively installed at the left and right ends of the slide block. A second pressure sensor is slidably installed at the bottom of the venting chamber. A dust spray system and a liquid spray system are respectively provided at the top of the venting chamber. A product collection system is provided at the bottom of the venting chamber.

[0008] By adopting the above technical solution, the gas inlet pipe is opened and a gas extraction operation is performed. When the PVC film on the other side is close to the inner wall, the gas extraction is stopped, and a mixture of nitrogen, carbon dioxide, or other explosion suppression research gases and air is injected until the PVC film is slightly bulging. The gas inlet pipe is then closed. Next, the high-pressure storage tank is evacuated, and combustible gas is injected into the high-pressure storage tank through the gas supply cylinder. An appropriate amount of powder is added into the venting chamber through the dust spraying system, and an appropriate amount of liquid is added into the venting chamber through the liquid spraying system. Then, the ignition operation is performed through the data acquisition and control system, and the jet of combustible gas is directly ignited. This enables the control of gaseous dust and liquid mist in the venting environment, and allows for a more intuitive study of the evolution process of the explosion flame.

[0009] Optionally, the gas supply system includes a gas cylinder and a booster pump. Several metal pipes are connected between the gas cylinder and the booster pump. Each of the metal pipes is equipped with a high-pressure gas shut-off valve. The left side of the high-pressure storage tank is connected to the end of the metal pipe away from the gas cylinder.

[0010] By adopting the above technical solution, the high-pressure gas shut-off valve is opened, making it convenient to fill the high-pressure storage tank with gas from the gas supply cylinder through the booster pump.

[0011] Optionally, a first pressure sensor and a temperature sensor are respectively installed at the bottom of the inner cavity of the high-pressure storage tank.

[0012] By adopting the above technical solution, the pressure and temperature inside the high-pressure storage tank are monitored and recorded, providing external condition references for further control of the flame jet.

[0013] Optionally, a bottom plate is installed on the inner bottom wall of the venting chamber, and a drainage groove is provided on the bottom plate. A control valve is installed inside the drainage groove, and tempered glass windows are installed on both the front and rear sides of the venting chamber.

[0014] By adopting the above technical solution, the liquid inside the venting chamber can be easily discharged by opening the valve on the drain groove. The tempered glass window allows staff to observe the combustion situation inside the venting chamber, enabling visual research.

[0015] Optionally, the dust spraying system includes a dust storage control start valve located at the right end of the top of the venting chamber. The end of the dust storage control start valve away from the venting chamber is connected to a dust storage tank. A third pressure sensor is installed on the dust storage tank. A second inflation control valve, a second flow regulator, and a second compressed air cylinder are sequentially connected to the end of the dust storage tank away from the dust storage control start valve. The dust storage control start valve, the third pressure sensor, and the second inflation control valve are respectively connected to a data acquisition and control system.

[0016] By adopting the above technical solution, the dust storage control start valve is opened, allowing the powder inside the dust storage tank to enter the venting chamber and be sprayed out through the dust nozzle. After adding an appropriate amount of powder, the dust storage control start valve is closed.

[0017] Optionally, the liquid spraying system includes a liquid storage control start valve located at the left end of the top of the discharge chamber. The end of the liquid storage control start valve away from the discharge chamber is connected to a liquid storage tank. A fourth pressure sensor is installed on the liquid storage tank. The end of the liquid storage tank away from the liquid storage control start valve is sequentially connected to a first inflation control valve, a first flow regulator, and a first compressed air cylinder. The liquid storage control start valve, the fourth pressure sensor, and the first inflation control valve are respectively connected to a data acquisition and control system.

[0018] By adopting the above technical solution, the liquid storage control start valve is opened, allowing the liquid inside the storage tank to enter the discharge chamber. After adding an appropriate amount of liquid, the liquid storage control start valve is closed.

[0019] Optionally, the data acquisition and control system includes a data acquisition unit and a computer control system, wherein the output terminals of each sensor are electrically connected to the input terminals of the data acquisition unit, and the output terminals of the data acquisition unit are electrically connected to the input terminals of the computer control system.

[0020] By adopting the above technical solution, the data from each sensor can be transmitted to the computer control system through the data acquisition device for recording and analysis.

[0021] Optionally, the product collection system includes a closed control valve, which is connected to a gas intake control valve and a vacuum control valve. One end of the vacuum control valve is connected to a vacuum pump, and the end of the gas intake control valve away from the closed control valve is connected to a dust collector. An air bag is provided at the end of the dust collector away from the closed control valve. The output end of the computer control system is electrically connected to the input ends of the closed control valve, the gas intake control valve, the vacuum pump, and the vacuum control valve.

[0022] The dust collector includes a housing, with an air inlet at one end connected to an air intake control valve, and an air outlet at the other end connected to an air bladder. Metal balls are installed inside both the air inlet and outlet. A dust storage box is installed at the bottom of the housing, and a filter cloth is installed at the end of the housing near the dust storage box. A movable column is connected to the right end of the housing, and the left end of the movable column extends into the housing and is fitted with a rubber elastic diaphragm.

[0023] By adopting the above technical solution, the closed control valve, the gas intake control valve, and the dust collector are opened to collect the gas into the inside of the airbag. The filter cloth is set so that the powder falls onto the powder storage box. After the air is completely evacuated, the closed control valve, the gas intake control valve, and the dust collector are closed, the powder storage box is taken out, and the gas in the airbag and the powder in the powder storage box are tested and analyzed.

[0024] Optionally, a high-speed camera is installed on the side of the venting chamber, and the high-speed camera is connected to the computer control system via a data acquisition device.

[0025] The above technical solution is used to capture the combustion flame pattern of combustible gases and transmit the image data to a computer control system.

[0026] Optionally, an ignition head is provided at the connection between the vent chamber and the connecting pipe. One end of the ignition head is connected to an igniter, and the input end of the igniter is electrically connected to the output end of the computer control system.

[0027] By adopting the above technical solution, the igniter is opened by a computer control system, and the igniter controls the ignition head to ignite the combustible gas inside the venting chamber.

[0028] In summary, this utility model has at least one of the following beneficial effects:

[0029] By coordinating the gas supply system, high-pressure storage tank, venting chamber, dust spraying system, and liquid spraying system, the dust spraying system sprays out an appropriate amount of powder through the dust spraying head, and the liquid spraying system sprays out an appropriate amount of liquid dust through the liquid spraying head, thereby enabling the control of gas dust and liquid mist inside the venting chamber and allowing for a more intuitive study of the evolution process of the explosion venting flame.

[0030] By using a combination of fixing screws, round rods, slide rails, spray heads, fixing knobs, and dust spray heads, the positions of the sensors, spray heads, and dust spray heads inside the venting chamber can be adjusted, improving the flexibility of the device during experiments. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0033] Figure 2 This is a schematic diagram of the dust collector structure of this utility model;

[0034] Figure 3 This is a schematic diagram of the top plate structure of this utility model;

[0035] Figure 4 This is a schematic diagram of the connection structure between the top plate and the round rod of this utility model. Figure 1 ;

[0036] Figure 5 This is a schematic diagram of the connection structure between the top plate and the round rod of this utility model. Figure 2 ;

[0037] Figure 6 This is a schematic diagram of the connection structure between the round rod, the liquid spray head, and the dust spray head of this utility model.

[0038] In the diagram: 1. Gas supply cylinder; 2. High-pressure check valve; 3. Booster pump; 4. High-pressure storage tank; 5. First pressure sensor; 6. Temperature sensor; 7. High-pressure solenoid valve; 8. Ignition head; 9. Gas inlet pipe; 10. Ignition device; 11. Venting chamber; 12. Second pressure sensor; 13. PVC film; 14. High-speed camera; 15. Computer control system; 16. Closure control valve; 17. Gas intake control valve; 18. Airbag; 19. Vacuum pump; 20. Vacuum control valve; 21. Dust storage tank; 22. Third pressure sensor; 23. Dust storage control start valve; 24. Liquid storage tank; 25. Fourth... 26. Pressure sensor; 27. Liquid storage control start valve; 28. First inflation control valve; 29. ​​First flow regulator; 30. First compressed gas cylinder; 31. Second compressed gas cylinder; 32. Second flow regulator; 33. Second inflation control valve; 33. Dust collector; 3301. Housing; 3302. Metal ball; 3303. Air inlet; 3304. Powder storage box; 3305. Filter cloth; 3306. Piston; 3307. Rubber elastic diaphragm; 3308. Air outlet; 34. Fixing screw; 35. Round rod; 36. Slide rail; 37. Spray head; 38. Fixing knob; 39. Dust spray head. Detailed Implementation

[0039] The following is in conjunction with the appendix Figure 1-6 The present invention will be described in further detail below.

[0040] Please refer to the attached diagram in the instruction manual. Figure 1This utility model provides an embodiment of an improved experimental device for high-pressure jet fire suppression research, comprising a venting chamber 11 and a data acquisition and control system. A connecting pipe is installed on the left side of the venting chamber 11, and a base plate is installed on the inner bottom wall of the venting chamber 11. A drainage groove is provided on the base plate, and a control valve is installed inside the drainage groove. Tempered glass windows are installed on both the front and rear sides of the venting chamber 11. By opening the valve on the drainage groove, the liquid inside the venting chamber 11 can be easily discharged. The tempered glass windows allow personnel to observe the combustion situation inside the venting chamber 11, enabling visual research.

[0041] Please refer to the attached diagram in the instruction manual. Figure 1 The connecting pipe is equipped with a high-pressure solenoid valve 7. The end of the vent chamber 11 away from the connecting pipe is equipped with a PVC film 13. The left side of the vent chamber 11 near the high-pressure solenoid valve 7 is connected to a gas inlet pipe 9. The end of the high-pressure solenoid valve 7 away from the vent chamber 11 is equipped with a high-pressure storage tank 4. The end of the high-pressure storage tank 4 away from the vent chamber 11 is equipped with a gas supply system.

[0042] Please refer to the attached diagram in the instruction manual. Figure 1 The gas supply system includes a gas cylinder 1 and a booster pump 3. Several metal pipes connect the gas cylinder 1 and the booster pump 3, and each metal pipe is equipped with a high-pressure check valve 2. The left side of the high-pressure storage tank 4 is connected to the end of the metal pipe furthest from the gas cylinder 1. Opening the high-pressure check valve 2 allows gas from the gas cylinder 1 to be pumped into the high-pressure storage tank 4 via the booster pump 3. A first pressure sensor 5 and a temperature sensor 6 are installed at the bottom of the inner cavity of the high-pressure storage tank 4. The pressure and temperature inside the high-pressure storage tank 4 are monitored and recorded to provide external condition references for further control of the flame jet.

[0043] Please refer to the attached diagram in the instruction manual. Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The inner top wall of the vent chamber 11 is equipped with a top plate. The bottom of the top plate is connected to a round rod 35 by a fixing screw 34. A slide rail 36 is provided on the outer side of the round rod 35. A slide block is slidably installed on the slide rail 36. A fixing knob 38 is provided on one side of the slide block. A liquid spray head 37 and a dust spray head 39 are respectively installed on the left and right ends of the slide block. A second pressure sensor 12 is slidably installed at the bottom of the vent chamber 11. A dust spray system and a liquid spray system are respectively provided on the top of the vent chamber 11.

[0044] Please refer to the attached diagram in the instruction manual. Figure 1The dust spraying system includes a dust storage control start valve 23, located at the top right end of the discharge chamber 11. The end of the dust storage control start valve 23 furthest from the discharge chamber 11 is connected to a dust storage tank 21. A third pressure sensor 22 is installed on the dust storage tank 21. The end of the dust storage tank 21 furthest from the dust storage control start valve 23 is sequentially connected to a second inflation control valve 32, a second flow regulator 31, and a second compressed air cylinder 30. The dust storage control start valve 23, the third pressure sensor 22, and the second inflation control valve 32 are respectively connected to a data acquisition and control system. Opening the dust storage control start valve 23 allows the powder inside the dust storage tank 21 to enter the discharge chamber 11 and be sprayed out through the dust nozzle 38. After adding an appropriate amount of powder, the dust storage control start valve 23 is closed.

[0045] Please refer to the attached diagram in the instruction manual. Figure 1 The liquid spraying system includes a liquid storage control start valve 26, located at the top left end of the discharge chamber 11. The end of the liquid storage control start valve 26 furthest from the discharge chamber 11 is connected to a liquid storage tank 24. A fourth pressure sensor 25 is installed on the liquid storage tank 24. The end of the liquid storage tank 24 furthest from the liquid storage control start valve 26 is sequentially connected to a first inflation control valve 27, a first flow regulator 28, and a first compressed air cylinder 29. The liquid storage control start valve 26, the fourth pressure sensor 25, and the first inflation control valve 27 are all connected to a data acquisition and control system. Opening the liquid storage control start valve 26 allows liquid from the liquid storage tank 24 to enter the discharge chamber 11. After adding an appropriate amount of liquid, the liquid storage control start valve 26 is closed.

[0046] Please refer to the attached diagram in the instruction manual. Figure 1 The data acquisition and control system includes a data acquisition unit and a computer control system 15. The output terminals of each sensor are electrically connected to the input terminals of the data acquisition unit, and the output terminals of the data acquisition unit are electrically connected to the input terminals of the computer control system 15. This allows the data from each sensor to be transmitted through the data acquisition unit to the computer control system 15 for recording and analysis.

[0047] Please refer to the attached diagram in the instruction manual. Figure 1 A high-speed camera 14 is installed on the side of the vent chamber 11. The high-speed camera 14 is connected to the computer control system 15 via a data acquisition unit. It is used to capture the combustion flame pattern of combustible gas and transmit the image data to the computer control system 15. An ignition head 8 is installed at the connection between the vent chamber 11 and the connecting pipe. One end of the ignition head 8 is connected to an igniter 10. The input end of the igniter 10 is electrically connected to the output end of the computer control system 15. The computer control system 15 controls the igniter 10 to open, and the igniter 10 controls the ignition head 8 to ignite the combustible gas inside the vent chamber 11.

[0048] Please refer to the attached diagram in the instruction manual. Figure 1 and Figure 2 A product collection system is installed at the bottom of the venting chamber 11. The product collection system includes a closed control valve 16, which is connected to a gas intake control valve 17 and a vacuum control valve 20. One end of the vacuum control valve 20 is connected to a vacuum pump 19. The end of the gas intake control valve 17 away from the closed control valve 16 is connected to a dust collector 33. An airbag 18 is installed at the end of the dust collector 33 away from the closed control valve 16. The output of the computer control system 15 is electrically connected to the inputs of the closed control valve 16, the gas intake control valve 17, the vacuum pump 19, and the vacuum control valve 20. The dust collector 33 includes a housing 3301. One end of the housing 3301 is provided with an air inlet 3303. The housing 3301 is connected to the air intake control valve 17 through the air inlet 3303. The other end of the housing 3301 is provided with an air outlet 3308. The housing 3301 is connected to the air bag 18 through the air outlet 3308. Metal balls 3302 are provided inside both the air inlet 3303 and the air outlet 3308. A powder storage box 3304 is installed at the bottom of the housing 3301. A filter cloth 3305 is installed at the end of the housing 3301 near the powder storage box 3304. A piston 3306 is connected to the right end of the housing 3301. The left end of the piston 3306 extends into the interior of the housing 3301 and is equipped with a rubber elastic diaphragm 3307. Open the closed control valve 16, the gas intake control valve 17, and the dust collector 33 to collect the gas into the inside of the air bag 18. The filter cloth 3305 is set so that the powder falls onto the powder storage box 3304. After the air is completely evacuated, close the closed control valve 16, the gas intake control valve 17, and the dust collector 33. Take out the powder storage box 3304 and test and analyze the gas in the air bag 18 and the powder in the powder storage box 3304.

[0049] Working principle: When in use, first confirm that the high-pressure solenoid valve 7 on the right side of the high-pressure storage tank 4 is closed, keep the high-pressure storage tank 4 sealed, then open the gas inlet pipe 9 to perform the gas extraction operation. Stop the gas extraction when the PVC film 13 on the other side is close to the inner wall, inject nitrogen or carbon dioxide or other explosion suppression research gas mixed with air, fill until the PVC film 13 does not block the tempered glass window and bulges slightly, then close the gas inlet pipe 9.

[0050] Then, the high-pressure storage tank 4 was evacuated, and combustible gas was filled in according to the experimental plan. The high-pressure stop valve 2 was opened, and the gas inside the gas supply cylinder 1 was filled into the high-pressure storage tank 4 through the metal pipe by using the booster pump 3. The pressure value inside the high-pressure storage tank 4 was monitored by the first pressure sensor 5, so that the pressure inside the high-pressure storage tank 4 reached the target pressure.

[0051] At this time, turn on the dust storage control start valve 23 to allow the powder inside the dust storage tank 21 to enter the discharge chamber 11 and be sprayed out through the dust nozzle 39. After adding an appropriate amount of powder, close the dust storage control start valve 23. At the same time, open the liquid storage control start valve 26 to allow the liquid inside the liquid storage tank 24 to enter the discharge chamber 11 and be sprayed out through the liquid nozzle 37. After adding an appropriate amount of liquid, close the liquid storage control start valve 26.

[0052] After inflation is complete, the high-pressure gas shut-off valve 2 is closed, the high-speed camera 14 is turned on, and then the ignition head 8 and igniter 10 are turned on by the computer control system 15 to perform the ignition operation. The combustible gas jetted out will be directly ignited when it encounters the ignition head 8. The automatic dust or liquid spraying action is performed by setting the time interval, and the pressure value inside the relief chamber 11 is monitored in real time by the second pressure sensor 12. At the same time, the high-speed camera 14 takes pictures of the combustion flame pattern of the combustible gas, records the pressure data and high-speed image data, and transmits the recorded data to the computer control system 15 through the data acquisition device.

[0053] After the experiment is completed, open the closed control valve 16, the gas intake control valve 17, and the dust collector 33 to collect the gas into the inside of the airbag 18. The filter cloth 3305 is set so that the powder falls onto the powder storage box 3304. After the air is completely evacuated, close the closed control valve 16, the gas intake control valve 17, and the dust collector 33. Take out the powder storage box 3304 and test and analyze the gas in the airbag 18 and the powder in the powder storage box 3304. The experiment ends. Finally, remove the PVC film 13 that was punctured after the explosion and replace it with a new PVC film 13, waiting for the next experiment.

[0054] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. An improved experimental apparatus for suppressing high-pressure jet fire, comprising a venting chamber (11) and a data acquisition and control system, characterized in that: A connecting pipe is installed on the left side of the venting chamber (11), and a high-pressure solenoid valve (7) is installed inside the connecting pipe. A PVC film (13) is installed at the end of the venting chamber (11) away from the connecting pipe. A gas inlet pipe (9) is connected to the left side of the venting chamber (11) near the high-pressure solenoid valve (7). A high-pressure storage tank (4) is installed at the end of the high-pressure solenoid valve (7) away from the venting chamber (11). A gas supply system is installed at the end of the high-pressure storage tank (4) away from the venting chamber (11). The inner top wall of the venting chamber (11) is equipped with a top plate. The bottom of the top plate is connected to a round rod (35) by a fixing screw (34). A slide rail (36) is provided on the outside of the round rod (35). A slide block is slidably installed on the slide rail (36). A fixing knob (38) is provided on one side of the slide block. A liquid spray head (37) and a dust spray head (39) are respectively installed on the left and right ends of the slide block. A second pressure sensor (12) is slidably installed at the bottom of the venting chamber (11). A dust spray system and a liquid spray system are respectively provided on the top of the venting chamber (11). A product collection system is provided at the bottom of the venting chamber (11).

2. The improved high-pressure jet fire suppression research experimental device according to claim 1, characterized in that: The gas supply system includes a gas cylinder (1) and a booster pump (3). Several metal pipes are connected between the gas cylinder (1) and the booster pump (3). Each of the metal pipes is equipped with a high-pressure gas shut-off valve (2). The left side of the high-pressure storage tank (4) is connected to the end of the metal pipe away from the gas cylinder (1).

3. The improved experimental apparatus for suppressing high-pressure jet fire according to claim 1, characterized in that: The bottom of the inner cavity of the high-pressure storage tank (4) is equipped with a first pressure sensor (5) and a temperature sensor (6).

4. The improved high-pressure jet fire suppression research experimental device according to claim 1, characterized in that: The bottom wall of the venting chamber (11) is equipped with a bottom plate, and a drainage groove is provided on the bottom plate. A control valve is provided inside the drainage groove. Tempered glass windows are installed on both the front and rear sides of the venting chamber (11).

5. The improved experimental apparatus for suppressing high-pressure jet fire according to claim 1, characterized in that: The dust spraying system includes a dust storage control start valve (23), which is located at the right end of the top of the discharge chamber (11). The end of the dust storage control start valve (23) away from the discharge chamber (11) is connected to a dust storage tank (21). A third pressure sensor (22) is installed on the dust storage tank (21). The end of the dust storage tank (21) away from the dust storage control start valve (23) is connected in sequence to a second inflation control valve (32), a second flow regulator (31), and a second compressed air cylinder (30). The dust storage control start valve (23), the third pressure sensor (22), and the second inflation control valve (32) are respectively connected to the data acquisition and control system.

6. The improved experimental apparatus for suppressing high-pressure jet fire according to claim 1, characterized in that: The liquid spraying system includes a liquid storage control start valve (26), which is located at the top left end of the discharge chamber (11). The end of the liquid storage control start valve (26) away from the discharge chamber (11) is connected to a liquid storage tank (24). A fourth pressure sensor (25) is installed on the liquid storage tank (24). The end of the liquid storage tank (24) away from the liquid storage control start valve (26) is connected in sequence to a first inflation control valve (27), a first flow regulator (28), and a first compressed gas cylinder (29). The liquid storage control start valve (26), the fourth pressure sensor (25), and the first inflation control valve (27) are respectively connected to the data acquisition and control system.

7. The improved experimental apparatus for suppressing high-pressure jet fire according to claim 1, characterized in that: The data acquisition and control system includes a data acquisition unit and a computer control system (15). The output terminals of each sensor are electrically connected to the input terminals of the data acquisition unit, and the output terminals of the data acquisition unit are electrically connected to the input terminals of the computer control system (15).

8. An improved experimental apparatus for suppressing high-pressure jet fire according to claim 7, characterized in that: The product collection system includes a closed control valve (16), which is connected to a gas intake control valve (17) and a vacuum control valve (20). One end of the vacuum control valve (20) is connected to a vacuum pump (19). The end of the gas intake control valve (17) away from the closed control valve (16) is connected to a dust collector (33). An airbag (18) is provided at the end of the dust collector (33) away from the closed control valve (16). The output end of the computer control system (15) is electrically connected to the input ends of the closed control valve (16), the gas intake control valve (17), the vacuum pump (19), and the vacuum control valve (20). The dust collector (33) includes a housing (3301), one end of which is provided with an air inlet (3303), which is connected to an air intake control valve (17) through the air inlet (3303). The other end of the housing (3301) is provided with an air outlet (3308), which is connected to an air bag (18) through the air outlet (3308). The air inlet (3303) and the air outlet... The inside of the opening (3308) is provided with metal balls (3302), the bottom of the shell (3301) is provided with a powder storage box (3304), the end of the shell (3301) near the powder storage box (3304) is provided with a filter cloth (3305), the right end of the shell (3301) is connected with a movable column (3306), the left end of the movable column (3306) extends into the inside of the shell (3301) and is provided with a rubber elastic diaphragm (3307).

9. An improved experimental apparatus for suppressing high-pressure jet fire according to claim 7, characterized in that: A high-speed camera (14) is installed on the side of the venting chamber (11), and the high-speed camera (14) is connected to the computer control system (15) through a data acquisition device.

10. An improved experimental apparatus for suppressing high-pressure jet fire according to claim 7, characterized in that: An ignition head (8) is provided at the connection between the vent chamber (11) and the connecting pipe. One end of the ignition head (8) is connected to an igniter (10), and the input end of the igniter (10) is electrically connected to the output end of the computer control system (15).

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