A high velocity atomized fire extinguishing device for extinguishing high intensity jet fire and method of use

Abstract

The present application relates to a kind of high-speed atomization fire extinguishing device for extinguishing high-intensity jet flame and use method, device includes drive gas system, fire extinguishing agent system, high-speed atomization system and control system.High-pressure inert gas is mainly provided by drive gas system;Fire extinguishing agent system mainly provides phosphorus-containing fire extinguishing agent;High-speed atomization is realized by atomizing nozzle, when drive gas flows through the throat of necking, pressure becomes small, under the action of pressure difference, fire extinguishing agent flows into the nozzle spout, and realizes atomization under the impact of high-speed gas;Control system mainly identifies jet flame height and calculates the initial speed of jet, to suppress or extinguish the effect of high-intensity jet fire based on the reasonable control of the flow of drive gas.The present application uses high-speed atomization phosphorus-containing fire extinguishing agent, has high efficient inhibitory effect, avoids the problem that water mist fire extinguishing efficiency is insufficient and halon replacement fire extinguishing agent is not environmental protection, while can solve the problem that high-intensity jet flame strong momentum brings its difficult to be extinguished.

Description

Technical Field

[0001] This invention relates to the field of fire protection and environmental protection technology, specifically to a high-speed atomizing fire extinguishing device and its method of use for extinguishing high-intensity jet flames. Background Technology

[0002] In practical applications, to facilitate transportation and increase the energy density of combustible gases, they are often stored in high-pressure containers or pipelines, such as hydrogen storage trailers and long-distance combustible gas transport pipelines. If a leak occurs in these high-pressure containers or pipelines, it is highly likely to form a high-intensity jet flame, which will inevitably cause significant harm to surrounding personnel and equipment. In some special circumstances, if control valves cannot be closed in time, these high-intensity jet flames can cause enormous damage. For example, hydrogen is characterized by its rapid combustion speed and high combustion temperature, while high-intensity jet flames have extremely high momentum and intense thermal radiation. Therefore, how to efficiently suppress or extinguish high-intensity hydrogen jet flames is crucial for the safe use of combustible gases.

[0003] Currently used fine water mist extinguishing agents have relatively low extinguishing efficiency and can enhance the combustion of hydrogen flames. Halon alternative extinguishing agents (such as perfluorohexanone and heptafluoropropane) produce large amounts of strong acidic substances after extinguishing fires, which corrode surrounding equipment and personnel and are not environmentally friendly. Therefore, neither of these types of extinguishing agents is suitable for extinguishing high-intensity jet flames. In addition, the strong momentum of high-intensity jet flames prevents the extinguishing agent from entering the flame core, making them difficult to suppress. Therefore, it is necessary to address both the extinguishing agent and the method of application simultaneously to explore methods for suppressing or extinguishing high-intensity jet flames.

[0004] Phosphorus-containing fire extinguishing agents possess highly efficient suppression capabilities. For example, dimethyl methylphosphonate has a suppression efficiency six times that of Halon 1301 under equivalent conditions, effectively addressing the issue of high-intensity jet flame combustion. In practical applications, utilizing high-speed atomization technology to atomize phosphorus-containing fire extinguishing agents while simultaneously achieving high-speed flow characteristics can specifically address the issue of strong momentum in high-intensity jet flames. Therefore, it is necessary to develop a high-speed atomization fire extinguishing device that effectively atomizes phosphorus-containing fire extinguishing agents and achieves high-speed flow characteristics, enabling it to effectively suppress or extinguish high-intensity jet flames. Summary of the Invention

[0005] In view of this, it is necessary to provide a high-speed atomizing fire extinguishing device and its usage method for extinguishing high-intensity jet flames in order to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A high-speed atomizing fire extinguishing device for extinguishing high-intensity jet flames includes a driving gas system, an extinguishing agent system, a high-speed atomization system, and a control system.

[0008] The driving gas system includes a gas storage tank, a solenoid valve, a gas mass flow meter, and corresponding gas transmission pipelines.

[0009] The gas storage tank stores inert driving gases, such as nitrogen or carbon dioxide;

[0010] The solenoid valve can regulate the opening and closing of gas transport;

[0011] The gas mass flow meter can control the flow rate of the driving gas and adjust the flow rate appropriately according to the size of the flame.

[0012] The corresponding gas pipeline connected to the gas storage tank is used to transport inert gas.

[0013] The extinguishing agent system includes a tank for storing phosphorus-containing extinguishing agent, an electromagnetic valve, and corresponding transport pipelines;

[0014] The tank for storing phosphorus-containing fire extinguishing agents is used to store phosphorus-containing substances. The tank must have a transport pipe that extends to the bottom of the container to ensure that the fire extinguishing agent at the bottom can also be used effectively. A valve must be installed on the tank. During the fire extinguishing process, the valve is opened to allow the liquid in the tank to come into contact with the outside air, ensuring that the outside atmospheric pressure can act on the fire extinguishing agent.

[0015] The phosphorus-containing substance may be dimethyl methylphosphonate (DMMP), trimethyl phosphate (TMP), or an aqueous solution containing dimethyl methylphosphonate, etc.

[0016] The electromagnetic valve can adjust the opening and closing of the extinguishing agent delivery;

[0017] The transport pipeline connected to the tank storing the phosphorus-containing fire extinguishing agent is used to transport the fire extinguishing agent.

[0018] The high-speed atomization system includes an atomization system shell, an atomization system handle, a fireproof hand guard for the atomization system, an atomization nozzle, and corresponding transport pipes;

[0019] The atomizing system has a stainless steel outer shell that houses the atomizing nozzle, preventing external objects from clogging the nozzle. The atomizing system handle allows the firefighter to hold the atomizing nozzle and aim at the flames. The fireproof hand guard of the atomizing system mainly protects the firefighter's hands from heat radiation and flames.

[0020] The atomizing nozzle includes a gas flow chamber, a liquid flow chamber, and a nozzle orifice. The gas flow chamber has a constriction throat; as the gas flows through the constriction throat, the pressure decreases, and under the pressure difference, the liquid is forced into the nozzle orifice by atmospheric pressure. At the nozzle orifice, the liquid extinguishing agent undergoes atomization under the impact of high-speed gas and exhibits high-speed flow characteristics.

[0021] The transport pipeline connected to the atomizing nozzle is divided into two paths: one path is connected to the gas transport pipeline and then to the gas flow chamber of the atomizing nozzle; the other path is connected to the liquid extinguishing agent transport pipeline and then to the liquid flow chamber of the atomizing nozzle.

[0022] The control system includes a high-definition camera, a portable computer, a solenoid valve controller, and a gas flow controller.

[0023] The high-definition camera is used to detect the length of the jet flame;

[0024] The portable computer calculates the initial velocity of the jet flame orifice based on the length of the jet flame detected by the high-definition camera. Based on this, it issues commands to the gas flow controller, thereby changing the size of the gas mass flow meter in the driving gas system.

[0025] The electromagnetic valve controller is used to control the opening and closing of electromagnetic valves in the driving gas system and fire extinguishing agent system;

[0026] The gas flow controller is used to control the size of the gas mass flow meter in the driving gas system.

[0027] On the other hand, the present invention also discloses a method of using a high-speed atomizing fire extinguishing device for extinguishing high-intensity jet flames, based on the above-mentioned high-speed atomizing fire extinguishing device for extinguishing high-intensity jet flames. For example, in the event of a high-intensity hydrogen jet fire, the method specifically includes the following steps:

[0028] 1) All subsystems of the high-speed atomizing phosphorus-containing fire extinguishing device are ready, and the electromagnetic valves of the driving gas system and the extinguishing agent system are in the closed state;

[0029] 2) Connect the delivery pipeline of the driving gas system to the gas flow chamber inlet of the atomizing nozzle, and connect the delivery pipeline of the extinguishing agent system to the liquid flow chamber inlet of the atomizing nozzle.

[0030] 3) The high-definition camera in the control system captures images of the jet flame, which are then binarized using a portable computer to obtain the length of the jet flame;

[0031] 4) The computer calculates the leakage orifice diameter based on the length of the jet flame, and at the same time calculates the amount of combustible gas leakage based on the pressure of the storage container, thereby calculating the initial velocity of the jet flame;

[0032] 5) The solenoid valve controller opens the control valve in the driving gas system and controls the flow rate of the driving gas according to the initial velocity of the jet flame, so that the high-speed extinguishing agent flow at the atomizing nozzle can suppress the flame.

[0033] 6) The solenoid valve controller simultaneously opens the control valve in the extinguishing agent system, allowing the extinguishing agent to act on the jet flame along with the driving gas;

[0034] 7) While the high-speed atomized phosphorus-containing extinguishing agent is released from the atomizing nozzle, the firefighter manually atomizes the system and adjusts the direction of the extinguishing agent spray, aiming at the bottom of the flame. As the flame is suppressed and the area gradually decreases, the firefighter pushes the atomizing nozzle towards the bottom of the flame, so that the extinguishing agent is closer to the bottom of the flame, thereby completely suppressing or extinguishing the high-intensity jet flame.

[0035] The beneficial technical effects of this invention are reflected in the following aspects:

[0036] 1) This invention is applicable to extinguishing high-intensity jet flames, especially high-intensity jet flames stored in high-pressure containers or pipelines; the high-speed atomizing fire extinguishing device of this invention uses a phosphorus-containing fire extinguishing agent, which has a highly efficient suppression effect, avoiding the problems of insufficient fire extinguishing efficiency of fine water mist and the environmental unfriendliness of halon as a substitute for fire extinguishing agent;

[0037] 2) The device of the present invention atomizes the extinguishing agent and obtains high-speed flow, which can specifically solve the problem that the high momentum of high-intensity jet flames makes them difficult to extinguish. The high-speed atomized extinguishing agent can suppress the momentum of high-intensity jet flames, so that the extinguishing agent can act on the core of the flame, thereby achieving the effect of completely suppressing or extinguishing high-intensity jet flames. Attached Figure Description

[0038] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0039] Figure 1 This is a schematic diagram of the high-speed atomizing phosphorus-containing fire extinguishing device for extinguishing high-intensity jet flames according to the present invention.

[0040] Figure 2 for Figure 1 A schematic diagram of the structure of the centrally driven gas system, extinguishing agent system, storage tank, gas pipeline and solenoid valve;

[0041] Figure 3 for Figure 1 Schematic diagram of the external structure of the atomization system;

[0042] Figure 4 for Figure 3 Schematic diagram of the atomizing nozzle structure in the atomization system;

[0043] Figure 5 for Figure 3 Schematic diagram of the atomizing nozzle structure in the atomization system;

[0044] Figure 6 for Figure 1 A schematic diagram of the structure of the central control system, high-definition camera, electromagnetic valve controller, gas flow controller and portable computer.

[0045] Explanation of reference numerals in the attached figures:

[0046] 1. Driving gas system; 11. Cylinder support; 12. Inert gas cylinder; 13. Inert gas; 14. Pressure reducing valve; 15. Solenoid valve a; 16. Gas transport pipeline; 17. Gas mass flow meter; 2. Extinguishing agent system; 21. Tank support; 22. Extinguishing agent storage tank; 23. Phosphorus-containing extinguishing agent; 24. Transport pipeline extending to the bottom of the storage tank; 25. Transport pipeline; 26. Solenoid valve b; 3. Atomizing system; 31. Atomizing system housing; 32. Atomizing system handle; 33. Atomizing system fireproof hand guard; 34. (Inside the atomizing system) 35. Atomizing nozzle, 36. Driving gas inlet, 37. Gas quick-connect terminal, 38. Driving gas flow chamber, 39. Liquid extinguishing agent inlet, 30. Extinguishing agent quick-connect terminal, 310. Extinguishing agent flow chamber, 311. Gas-liquid separator, 312. Narrow throat, 313. Atomizing nozzle head, 314. High-speed atomizing extinguishing agent outlet, 315. Threaded sealing ring, 316. High-speed atomizing extinguishing agent particles, 4. Control system, 41. High-definition camera, 42. Portable computer, 43. Electromagnetic valve controller, 44. Gas mass flow controller. Detailed Implementation

[0047] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0048] Please see Figure 1 The high-speed atomization phosphorus-containing fire extinguishing test device for extinguishing hydrogen jet flames includes a driving gas system 1, a phosphorus-containing fire extinguishing agent system 2, a high-speed atomization system 3, and a control system 4.

[0049] The driving gas system 1 mainly provides high-speed airflow for the fire extinguishing device. Please refer to [link / reference]. Figure 2 The inert gas 13 is mainly contained in the gas cylinder 12, generally nitrogen or carbon dioxide. The gas cylinder is fixed on the gas cylinder support 11 to prevent tipping. At the same time, the gas cylinder nozzle is equipped with a pressure reducing valve 14 and is connected to the gas transport pipeline 16. A solenoid valve a15 is installed on the transport pipeline 16, which can be controlled by the control system 4. A gas mass flow controller 17 is installed on the gas transport pipeline 16, which can reasonably control the flow of the driving gas through the control system 4 and transport it to the atomizing nozzle through the gas transport pipeline 16. The gas transport pipeline 16 is a high-pressure resistant PU tube to ensure its safe operation and can be connected to the gas quick-connect terminal 36 in the atomizing nozzle for easy operation.

[0050] The extinguishing agent system 2 mainly provides extinguishing agents for the fire extinguishing device. Please refer to [link / reference]. Figure 2 The phosphorus-containing extinguishing agent 23 is stored in the extinguishing agent storage tank 22 and fixed with a bracket 21. During the transportation of the extinguishing agent, the transportation pipeline 25 needs to be extended to the bottom of the storage tank to facilitate the extraction and spraying of all the extinguishing agent. A solenoid valve b26 is installed on the extinguishing agent transportation pipeline 25, which can be controlled by the control system 4. The extinguishing agent transportation pipeline connected to the atomizing nozzle can also be a high-pressure resistant PU tube, which is connected to the extinguishing agent quick-connect terminal 39 in the atomizing nozzle for easy operation.

[0051] The atomization system 3 mainly utilizes the mixing of driving gas and extinguishing agent to achieve high-speed atomization. Please refer to [link / reference]. Figure 3 The outer shell 31 of the atomizing system is made of stainless steel, and the atomizing nozzle 34 is nested inside to prevent external objects from clogging the nozzle; the handle 32 of the atomizing system makes it easy for the firefighter to hold the atomizing system; the fireproof hand guard 33 of the atomizing system mainly prevents the firefighter's hands from being injured by the heat radiation of the flames.

[0052] Please refer to the atomizing nozzle 34. Figure 4 The atomizing nozzle 34 includes a gas quick-connect terminal 36, a gas-liquid chamber 317, and an atomizing nozzle head 313, all of which are hollow structures. The upper end of the gas-liquid chamber 317 is threadedly connected to the gas quick-connect terminal 36, and the lower end is threadedly connected to the atomizing nozzle head 313. A threaded hole is formed on the lower side wall of the gas-liquid chamber 317, and the extinguishing agent quick-connect terminal 39 is threadedly connected to the threaded hole on the side wall of the gas-liquid chamber 317. A gas-liquid separator 311 is threadedly connected inside the gas-liquid chamber 317. The gas-liquid separator 311 is a hollow tube, and the gas-liquid separator 311 is connected to the inner side wall of the gas-liquid chamber 317. A gap is left between the gas and liquid. The gas-liquid separator 311 separates the gas and liquid inside the gas-liquid chamber 317. One end of the gas-liquid separator 311 is fixedly connected to a constricted throat 312. The constricted throat 312 is a hollow conical tube with an opening at the tip. The constricted throat 312 is accommodated in a wedge-shaped atomizing nozzle head 313. The end of the atomizing nozzle head 313 is provided with a high-speed atomizing extinguishing agent outlet 314. The position of the opening at the tip of the constricted throat 312 is slightly shorter than the position of the high-speed atomizing extinguishing agent outlet 314. The threaded connections of each component in the atomizing nozzle 34 are all sealed with threaded sealing rings 315.

[0053] The driving gas inlet 35 is connected to the gas transport pipeline 16, and the liquid extinguishing agent inlet 38 is connected to the liquid transport pipeline 25. The gas quick-connect terminal 36 and the extinguishing agent quick-connect terminal 39 allow for quick connection between the transport pipeline and the atomizing nozzle. In the atomizing nozzle, gas flows in the gas flow chamber 37, and liquid flows in the extinguishing agent flow chamber 310. Before reaching the atomizing nozzle, the two are separated by a gas-liquid separator 311. In the atomizing nozzle head 313, the gas passes through a constricted throat 312, primarily utilizing the Venturi principle. When the gas passes through the throat section, the gas flow... When the velocity reaches its maximum and the static pressure reaches its minimum, a pressure difference is generated at the throat. This pressure difference acts as an external suction force for the liquid above the throat, drawing it through the extinguishing agent flow chamber 310 into the nozzle. At this point, the extinguishing agent and gas mix violently, and the liquid extinguishing agent breaks up, exiting at the outlet of the constricted throat 312, i.e., the high-speed atomized extinguishing agent outlet 314. Due to the high annular velocity of the gas and the relatively low velocity of the liquid, a large velocity difference is formed, resulting in significant friction and shearing between the gas and liquid, thus achieving the atomization effect and ultimately forming the high-speed atomized extinguishing agent 316. Please refer to [further details]. Figure 4 The entire atomizing nozzle is made of stainless steel, making it less prone to rusting. The gas quick-connect terminal 36, extinguishing agent quick-connect terminal 39, gas-liquid separator 311, and atomizing nozzle head 313 in the atomizing nozzle are all connected to the nozzle body by threaded seal 315, and the sealing effect is achieved by using a sealing ring.

[0054] The control system 4 controls the opening and closing of solenoid valves a15 and b26 in the driving gas system 1 and the extinguishing agent system 2, and simultaneously controls the flow rate of the gas mass flow meter 17 in the driving gas system 1. A high-definition camera 41 captures flame images and performs binarization processing on the flame images to obtain the jet flame length. Based on the relationship between the jet flame length and the leak orifice diameter, the leak orifice diameter is calculated as shown in formula (1).

[0055] (1)

[0056] In formula (1) The diameter of the leak opening; The length of the jet flame; The length is dimensionless; this invention is primarily aimed at high-intensity jet flames, therefore... =23; The density of the combustible gas at the nozzle; The density of combustible gas at infinity is approximately the density of air. ; The chemical equivalent value of the combustible gas is calculated as shown in formula (2).

[0057] (2)

[0058] In formula (2) The air-fuel ratio is the chemical equivalent, and the specific calculation is shown in formula (3).

[0059] (3)

[0060] In formula (3) The molar mass of air is 28.85. The molar mass of combustible fuels; for hydrocarbon fuels The stoichiometric relationship is as follows:

[0061] (4)

[0062] In the formula

[0063] (5)

[0064] Combining formulas (1)-(5), the orifice diameter can be calculated using formula (6):

[0065] (6)

[0066] In formula (6) It was captured by a high-definition camera (41). , and These are inherent property parameters of combustible gases; common parameters are shown in Table 1.

[0067] Table 1. Common Combustible Gas Parameters.

[0068]

[0069] The amount of flammable gas leaked can be determined by combining the diameter of the leak opening with the pressure of the flammable gas storage container. Table 2 shows the air throughput per minute for different orifice sizes at different pressures. For any orifice size and pressure, the air throughput can be obtained by referring to the table and interpolation. (The table also includes data on the throughput of combustible gases.) Airflow is required Multiply by a fixed coefficient ,Right now The fixed coefficient of common combustible gases As shown in Table 1.

[0070] Table 2. Air throughput Q per minute for different apertures at different pressures.

[0071]

[0072] Based on the above calculations, the diameter of the leakage outlet can be obtained. and leakage amount Therefore, the initial velocity of the combustible gas at the leak point can be calculated. To ensure that the high-speed atomized extinguishing agent can function effectively within the core of a high-intensity jet flame, it is essential to maintain the appropriate flow rate of the atomized extinguishing agent (…). () is greater than the initial velocity of the combustible gas at the leak point () ),Right now Based on this, the flow rate of the gas mass flow meter 17 in the driving gas system 1 is set.

[0073] (7)

[0074] In formula (7) The flow rate of gas mass flow meter 17, This is the diameter of the atomizing nozzle opening.

[0075] The high-speed atomizing phosphorus-containing fire extinguishing device extinguishes hydrogen jet flames by specifically including the following steps:

[0076] 1) All subsystems of the high-speed atomizing phosphorus-containing fire extinguishing device are ready, and the solenoid valves a15 and b26 of the driving gas system and the extinguishing agent system are in the closed state.

[0077] 2) Connect the gas delivery pipeline of the driving gas system to the gas quick-connect terminal 36 of the atomizing nozzle 34, and connect the fire extinguishing agent delivery pipeline 25 to the fire extinguishing agent quick-connect terminal 39.

[0078] 3) The high-definition camera 41 in the control system 4 captures images of the jet flame, which are then binarized by a portable computer to obtain the length of the jet flame. ;

[0079] 4) The computer calculates the leakage orifice diameter based on the length of the jet flame. At the same time, the amount of combustible gas leakage is calculated based on the pressure of the storage container. Thus, the initial velocity of the jet flame can be calculated. ;

[0080] 5) The solenoid valve controller 43 opens the solenoid valve a15 in the driving gas system, and controls the gas flow rate controlled by the gas mass flow meter 17 according to the initial velocity of the jet flame. This allows the high-speed extinguishing agent flow at the atomizing nozzle to suppress the flame;

[0081] 6) The solenoid valve controller 43 simultaneously opens the solenoid valve b26 in the extinguishing agent system, so that the extinguishing agent can act on the jet flame together with the driving gas.

[0082] 7) As the high-speed atomized phosphorus-containing extinguishing agent is released from the atomizing nozzle 34, the firefighter holds the atomizing system 3 and adjusts the direction of the extinguishing agent spray, aiming at the bottom of the flame. As the flame is suppressed and the area gradually decreases, the firefighter pushes the atomizing nozzle towards the bottom of the flame, so that the extinguishing agent is closer to the bottom of the flame, thereby completely suppressing or extinguishing the high-intensity jet flame.

[0083] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A high-speed atomizing fire extinguishing device for extinguishing high-intensity jet flames, characterized in that, include: The system comprises a driving gas system (1), a fire extinguishing agent system (2), a high-speed atomization system (3), and a control system (4), wherein the driving gas system (1) and the fire extinguishing agent system (2) are connected to the high-speed atomization system (3) through corresponding transport pipelines; the solenoid valves and gas mass flow meters in the driving gas system (1) and the fire extinguishing agent system (2) are controlled by the control system (4); the high-speed atomization system (3) includes atomizing nozzles (34); The control system (4) includes: a high-definition camera (41), a portable computer (42), an electromagnetic valve controller (43), and a gas mass flow controller (44); the electromagnetic valve a (15) driving the gas system and the electromagnetic valve b (26) of the extinguishing agent system are respectively connected to the electromagnetic valve controller (43) circuit, and the electromagnetic valve controller (43) controls the opening and closing of the electromagnetic valves; the gas mass flow meter (17) is connected to the gas mass flow controller (44) circuit, and the gas mass flow controller (44) controls the gas flow rate; the high-definition camera (41), the electromagnetic valve controller (43), and the gas mass flow controller (44) are respectively connected to the portable computer (42) circuit, and are ultimately controlled by the portable computer (42); the high-definition camera (41) is used to capture flame images and perform binarization processing on the flame images to obtain the jet flame length. ; The control system (4) identifies and captures the jet flame, and determines the length of the jet flame based on the obtained data. The diameter of the leakage outlet is calculated as shown in formula (1): （1） In formula (1) The diameter of the leak opening; The length of the jet flame; The length of the dimensionless flame. ; The density of the combustible gas at the leak point; The density of combustible gas at infinity is approximately the density of air. ; The chemical equivalent value of the combustible gas is calculated as shown in formula (2): （2） In formula (2) The air-fuel ratio is the chemical equivalent. The amount of flammable gas leaked is calculated based on the diameter of the leak outlet and the pressure of the flammable gas storage container. ; To ensure that the high-speed atomized extinguishing agent can function effectively within the core of a high-intensity jet flame, it is essential to maintain the appropriate flow rate of the atomized extinguishing agent. Greater than the initial velocity of the combustible gas at the leak point ,Right now Based on this, the flow rate of the gas mass flow meter (17) in the driving gas system (1) is set. for: （7） In formula (7) The flow rate of the gas mass flow meter (17) is the magnitude of the flow rate. This is the diameter of the atomizing nozzle opening.

2. The high-speed atomizing fire extinguishing device for extinguishing high-intensity jet flames according to claim 1, characterized in that: The driving gas system (1) provides a high-speed airflow for the fire extinguishing device, including: a gas cylinder support (11), an inert gas cylinder (12), a pressure reducing valve (14), a solenoid valve a (15), and a gas mass flow meter (17); the inert gas (13) is installed in the inert gas cylinder (12), and the inert gas cylinder (12) is fixed on the gas cylinder support (11); at the same time, the gas cylinder nozzle is equipped with a pressure reducing valve (14) and connected to the gas transport pipeline (16); the solenoid valve a (15) is installed on the gas transport pipeline (16) and is controlled by the control system (4); the gas mass flow meter (17) is installed on the gas transport pipeline (16), and the driving gas flow is controlled by the control system (4), and transported to the atomizing nozzle (34) of the high-speed atomizing system (3) through the gas transport pipeline (16); the gas transport pipeline (16) is connected to the gas quick-connect terminal (36) in the atomizing nozzle (34).

3. The high-speed atomizing fire extinguishing device for extinguishing high-intensity jet flames according to claim 1, characterized in that: The extinguishing agent system (2) provides extinguishing agent to the extinguishing device, including: a storage tank support (21), an extinguishing agent storage tank (22), and a solenoid valve b (26). The phosphorus-containing extinguishing agent (23) is stored in the extinguishing agent storage tank (22) and the extinguishing agent storage tank (22) is fixed by the storage tank support (21). The extinguishing agent transport pipeline (25) extends into the bottom of the extinguishing agent storage tank (22). The solenoid valve b (26) is installed on the extinguishing agent transport pipeline (25) and is controlled by the control system (4). The extinguishing agent transport pipeline (25) is connected to the extinguishing agent quick-connect terminal (39) in the atomizing nozzle (34). The phosphorus-containing extinguishing agent (23) is a phosphorus-containing substance such as dimethyl methylphosphonate (DMMP), trimethyl phosphate (TMP), or an aqueous solution of dimethyl methylphosphonate.

4. A high-speed atomizing fire extinguishing device for extinguishing high-intensity jet flames according to claim 1, characterized in that: The high-speed atomization system (3) utilizes the mixing of driving gas and extinguishing agent to achieve high-speed atomization. The high-speed atomization system (3) includes: atomization system shell (31), atomization system handle (32), atomization system fireproof hand guard (33), and atomization nozzle (34). The atomization system shell (31) is fitted over the outside of the atomization nozzle (34) and the atomization nozzle head is nested inside it to prevent external objects from clogging the nozzle. The atomization system shell (31) is made of stainless steel. Atomization system fireproof hand guard (33) is provided at the front end of the atomization system shell (31) to prevent flame heat radiation and flame from injuring the hands of the firefighter. Atomization system handle (32) is provided at the back of the atomization system fireproof hand guard (33) for easy holding by the firefighter.

5. A high-speed atomizing fire extinguishing device for extinguishing high-intensity jet flames according to claim 4, characterized in that: The atomizing nozzle (34) includes: a gas quick-connect terminal (36), a gas-liquid chamber (317), and an atomizing nozzle head (313), all of which have hollow internal structures. The upper end of the gas-liquid chamber (317) is threadedly connected to the gas quick-connect terminal (36), and the lower end is threadedly connected to the atomizing nozzle head (313). A threaded hole is provided on the lower side wall of the gas-liquid chamber (317), and the extinguishing agent quick-connect terminal (39) is threadedly connected to the threaded hole on the side wall of the gas-liquid chamber (317). A gas-liquid separator (311) is threadedly connected inside the gas-liquid chamber (317). The gas-liquid separator (311) is a hollow tube, and the gas-liquid separator (311) is connected to the gas-liquid chamber (317). A gap is left between the side walls, and the gas-liquid separator (311) separates the gas and liquid inside the gas-liquid cavity (317). One end of the gas-liquid separator (311) is fixedly connected to a constricted throat (312), which is a hollow conical tube with an opening at the tip. The constricted throat (312) is housed in a wedge-shaped atomizing nozzle (313), and the end of the atomizing nozzle (313) is provided with a high-speed atomizing extinguishing agent outlet (314). The position of the tip opening of the constricted throat (312) is slightly shorter than the position of the high-speed atomizing extinguishing agent outlet (314). All threaded connections of the components in the atomizing nozzle (34) are sealed with threaded sealing rings (315).

6. A high-speed atomizing fire extinguishing device for extinguishing high-intensity jet flames according to claim 5, characterized in that: The gas delivery pipe (16) and the fire extinguishing agent delivery pipe (25) are quickly connected to the atomizing nozzle (34) via the gas quick-connect terminal (36) and the fire extinguishing agent quick-connect terminal (39).

7. A high-speed atomizing fire extinguishing device for extinguishing high-intensity jet flames according to claim 2, characterized in that: The inert gas (13) is nitrogen or carbon dioxide, and the inert gas cylinder (12) has a pressure of 1.5-2 MPa.

8. A method for extinguishing high-intensity jet flames using the high-speed atomizing fire extinguishing device according to any one of claims 1-7, characterized in that, Includes the following steps: 1) All subsystems of the high-speed atomizing phosphorus-containing fire extinguishing device are ready, and the solenoid valve a (15) of the driving gas system and the solenoid valve b (26) of the extinguishing agent system are in the closed state; 2) Connect the gas delivery pipe of the driving gas system to the gas quick-connect terminal (36) of the atomizing nozzle (34), and connect the extinguishing agent delivery pipe (25) of the extinguishing agent system to the extinguishing agent quick-connect terminal (39); 3) The high-definition camera (41) in the control system (4) captures images of the jet flame, which are then binarized by a portable computer to obtain the length of the jet flame. ; 4) The computer calculates the diameter of the leak outlet based on the length of the jet flame. Simultaneously, the amount of combustible gas leakage is calculated based on the pressure of the combustible gas storage container. Thus, the initial velocity of the jet flame can be calculated. ; 5) The solenoid valve controller (43) opens the solenoid valve a (15) in the driving gas system, and controls the flow rate of the gas mass flow meter (17) according to the initial velocity of the jet flame. This allows the high-speed extinguishing agent flow at the atomizing nozzle to suppress the flame; 6) The electromagnetic valve controller (43) simultaneously opens the electromagnetic valve b (26) in the extinguishing agent system, so that the extinguishing agent can act on the jet flame together with the driving gas; 7) As the high-speed atomized phosphorus-containing fire extinguishing agent is released from the atomizing nozzle (34), the firefighter holds the high-speed atomizing system (3) and adjusts the direction of the fire extinguishing agent spray, aiming at the bottom of the flame. As the area of ​​the flame gradually decreases when it is suppressed, the firefighter pushes the atomizing nozzle towards the bottom of the flame, so that the fire extinguishing agent is closer to the bottom of the flame, thereby completely suppressing or extinguishing the high-intensity jet flame.

Images