CN-121978279-A - Simulation experiment device with controllable fire-extinguishing droplet characteristics of aircraft and simulation control method

CN121978279ACN 121978279 ACN121978279 ACN 121978279ACN-121978279-A

Abstract

The invention provides a simulation experiment device with controllable fire extinguishing droplet characteristics of an aircraft and a simulation control method, wherein a fire monitoring system determines target data corresponding to each fire extinguishing droplet characteristic based on detected parameter change data and set different fire extinguishing droplet characteristics; the fire extinguishing agent consumption control system mixes the corresponding target fire extinguishing agent consumption and the corresponding water consumption based on the fire extinguishing agent mixing proportion of each target data to obtain a mixed fire extinguishing agent, and sequentially passes through target spray heads of the spraying system to convert the mixed fire extinguishing agent into a liquid drop group with target liquid drop particle size and speed based on preset pressure and the target spray heads, and controls the mixed fire extinguishing agent to fall onto a combustion platform. The characteristics of the liquid drop groups under different flight parameter states are simulated when the aircraft is put out and sprayed, the particle size and the speed of the liquid drop of the fire extinguishing agent are accurately and independently regulated and controlled according to the characteristics of the liquid drop of the different fire extinguishing agents and the parameter change data of the detected fire, and therefore the experimental effect of the fire extinguishing agent liquid drop of the aircraft on forest fire inhibition is improved.

Inventors

LEI JIAO
YANG JIAYI
ZHANG HONGMIN
WANG XINYU
LIU NAIAN

Assignees

中国科学技术大学

Dates

Publication Date: 20260505
Application Date: 20260204

Claims (10)

1. The simulation experiment device with controllable fire-extinguishing droplet characteristics of the aircraft is characterized by comprising a combustion platform, a fire-extinguishing agent dosage control system, a spraying system and a fire monitoring system; The spraying system is arranged above the combustion platform and is connected with the fire extinguishing agent dosage control system; the fire monitoring system is arranged at a preset position at the tail end of the combustion platform; The fire monitoring system detects parameter change data of fire, a temperature field and radiant heat flux in the combustion platform, and determines target data corresponding to each fire extinguishing agent droplet characteristic based on the parameter change data and different set fire extinguishing agent droplet characteristics, wherein the target data comprises fire intensity, fire extinguishing agent mixing data, a target spray head corresponding to the fire extinguishing agent droplet characteristic and preset pressure; The fire extinguishing agent consumption control system mixes the corresponding target fire extinguishing agent consumption and the corresponding water consumption based on the fire extinguishing agent mixing data aiming at the target data corresponding to the characteristics of each fire extinguishing agent drop to obtain a mixed fire extinguishing agent; The fire extinguishing agent dosage control system sequentially passes through target spray heads of the spraying system, so that the mixed fire extinguishing agent is converted into a liquid drop group with target liquid drop particle size and target liquid drop speed based on the preset pressure and the target spray heads, and falls onto the fuel being combusted on the combustion platform at the target liquid drop particle size and the target liquid drop speed.
2. The apparatus of claim 1, wherein the combustion platform comprises a truss, a fire deck, and a fuel bed; The fireproof plate is arranged on the truss, and a fuel bed is paved above the fireproof plate; the fuel bed is a forest combustible; the truss is used for supporting the fireproof plate and the fuel bed; the fireproof plate is used for preventing fire.
3. The apparatus of claim 1, wherein the fire suppressant usage control system comprises a control electric tank, a water pump, a fire suppressant mixing device, a flowmeter, and a solenoid valve; the water tank is connected with a water inlet of the water pump through a first pipeline; the water outlet of the water pump is connected with the spraying system through a second pipeline; the second pipeline is sequentially provided with fire extinguishing agent mixing equipment, a flowmeter and an electromagnetic valve; the control electric box is respectively connected with the water pump, the flowmeter and the electromagnetic valve in a wireless mode; the flowmeter is used for monitoring the instantaneous flow and the accumulated flow of the mixed fire extinguishing agent flowing through the pipeline in real time and feeding back the control electric box; The electromagnetic valve is used for receiving a control signal of the control electric box so as to turn off or turn on the spraying system.
4. A device according to claim 3, wherein the fire suppressant usage control system is further provided with a fire suppressant concentration tank; The fire extinguishing agent concentration tank is connected with the fire extinguishing agent mixing equipment through a pipeline.
5. The apparatus of claim 1, wherein the fire monitoring system comprises a video recording system, a thermocouple array, a thermal infrared imager, and a heat flow meter; the video recording system is arranged at the side of the combustion platform and is used for shooting the phenomenon of the fire extinguishing process; The thermocouple array consists of a plurality of thermocouples, and the thermocouple array is distributed in a space above a fuel platform of the combustion platform and/or on the surface of the fuel platform; The thermal infrared imager is arranged at the side edge of the combustion platform; the thermal infrared imager and the thermocouple array are used for measuring the temperature change of the surface and the interior of the fuel in the fire extinguishing process of the fuel bed; the heat flow meter is arranged at a preset area of the surface of the fuel bed and is used for detecting radiant heat flux of fire in the fire extinguishing process.
6. The apparatus of claim 1, wherein the spray system comprises a spray head slide module and a spray head; the spray head is arranged in the spray head sliding module; The spray head sliding module is used for arbitrarily moving or fixing in the area above the combustion platform and is used for switching spray heads or adjusting the spray angle of the spray heads.
7. The apparatus of claim 1, further comprising a high-speed camera system constructed from a high-speed camera and a measurement intensity light source; The high-speed camera is arranged at the outer side of the tail end of the combustion platform and is used for shooting the sizes of the particle sizes and the speeds of the fire extinguishing agent drops of the spraying system under different target spray heads and preset pressure when the combustion platform is not in a combustion state; the measuring strong light source is arranged at a preset distance of the high-speed camera and used for assisting in shooting to acquire liquid drop characteristic data.
8. The apparatus of claim 1, further comprising a grade adjustment system; The gradient adjusting system is arranged below the combustion platform and is used for supporting and changing the angle and the shape of the fuel bed in the combustion platform.
9. The apparatus of claim 1, further comprising an ambient wind farm system; The environmental wind field system is a fan array formed by a plurality of axial flow fans; The environmental wind field system is arranged at the side edge position of the combustion platform.
10. A simulation control method, characterized by being applied to the simulation experiment device with controllable fire-extinguishing droplet characteristics of an aircraft according to any one of claims 1 to 9, the method comprising: Determining target data corresponding to each extinguishing agent droplet characteristic based on the parameter change data and different extinguishing agent droplet characteristics, wherein the target data comprises fire intensity, extinguishing agent mixing data, a target nozzle corresponding to the extinguishing agent droplet characteristic and preset pressure; Aiming at target data corresponding to the characteristics of each extinguishing agent drop, the extinguishing agent consumption control system mixes the corresponding target extinguishing agent consumption and the corresponding water consumption based on the extinguishing agent mixing data to obtain a mixed extinguishing agent; The fire extinguishing agent dosage control system sequentially passes through target spray heads of the spraying system, so that the mixed fire extinguishing agent is converted into a liquid drop group with target liquid drop particle size and target liquid drop speed based on the preset pressure and the target spray heads, and falls onto the fuel being combusted on the combustion platform at the target liquid drop particle size and the target liquid drop speed.

Description

Simulation experiment device with controllable fire-extinguishing droplet characteristics of aircraft and simulation control method Technical Field The invention relates to the technical field of fire safety, in particular to a simulation experiment device and a simulation control method with controllable fire extinguishing droplet characteristics of an aircraft. Background As a global frequent natural disaster, forest fires have the remarkable characteristics of strong burst, rapid spread, difficult suppression and the like, and seriously threaten ecological safety and life and property safety of people. In recent years, with the expansion of global climate change and human activity range, the occurrence frequency and intensity of forest fires have a remarkable rising trend, and the area of single overfire is expanded year by year. Among various means of putting out fire, aviation fire extinguishing (including helicopters, fixed wing aircraft, etc.) has become a core force for controlling initial fires and putting out fires in remote areas by virtue of its excellent maneuverability and rapid response capability, and flexibility in cooperation with ground fire-fighting forces. In aviation fire extinguishing, the fire extinguishing agent is directly thrown by the aircraft, so that the fire extinguishing agent (water or fire retardant) is crushed into small liquid drops under the actions of gravity, air shearing force and the like after being thrown, and falls to a fire scene to inhibit or extinguish fire through the inhibition of flame and the wetting cooling action on combustible substances. Disclosure of Invention In view of the above, the embodiment of the invention provides a simulation experiment device and a simulation control method with controllable fire extinguishing liquid drop characteristics of an aircraft, so as to solve the problems of poor experimental effect of fire suppression of forest fire caused by aviation spraying fire extinguishing agent liquid drops in the prior art and the like. In order to achieve the above object, the embodiment of the present invention provides the following technical solutions: the first aspect of the embodiment of the invention shows a simulation experiment device with controllable fire-extinguishing droplet characteristics of an aircraft, which comprises a combustion platform, a fire-extinguishing agent dosage control system, a spraying system and a fire monitoring system; the spraying system is arranged above the combustion platform and is connected with the fire extinguishing agent dosage control system; the fire monitoring system is arranged at a preset position at the tail end of the combustion platform; The fire monitoring system detects parameter change data of fire, a temperature field and radiant heat flux in the combustion platform, and determines target data corresponding to each fire extinguishing agent droplet characteristic based on the parameter change data and different set fire extinguishing agent droplet characteristics, wherein the target data comprises fire intensity, fire extinguishing agent mixing data, a target spray head corresponding to the fire extinguishing agent droplet characteristic and preset pressure; The fire extinguishing agent consumption control system mixes the corresponding target fire extinguishing agent consumption and the corresponding water consumption based on the fire extinguishing agent mixing data aiming at the target data corresponding to the characteristics of each fire extinguishing agent drop to obtain a mixed fire extinguishing agent; The fire extinguishing agent dosage control system sequentially passes through target spray heads of the spraying system, so that the mixed fire extinguishing agent is converted into a liquid drop group with target liquid drop particle size and target liquid drop speed based on the preset pressure and the target spray heads, and falls onto the fuel being combusted on the combustion platform at the target liquid drop particle size and the target liquid drop speed. Optionally, the combustion platform comprises a truss, a fire deck, and a fuel bed; The fireproof plate is arranged on the truss, and a fuel bed is paved above the fireproof plate; the fuel bed is a forest combustible; the truss is used for supporting the fireproof plate and the fuel bed; the fireproof plate is used for preventing fire. Optionally, the fire extinguishing agent dosage control system comprises a control electric box, a water tank, a water pump, fire extinguishing agent mixing equipment, a flowmeter and an electromagnetic valve; the water tank is connected with a water inlet of the water pump through a first pipeline; the water outlet of the water pump is connected with the spraying system through a second pipeline; the second pipeline is sequentially provided with fire extinguishing agent mixing equipment, a flowmeter and an electromagnetic valve; the control electric box is respectively connected with the w