Design And Research Of Self-Propelled Drainage Forest Wind Fire Extinguisher

As one of the important components of my country’s natural resources,forest resources can effectively adjust climatic conditions through photosynthesis,provide good living conditions for the Chinese people,and help solve the problems of global warming and air pollution in my country and even around the world.have become the most serious disasters that destroy forests.Wind-powered fire extinguishi However,in recent years,forest fires have also occurred frequently,bringing a series of negative hazards to our country’s forest resources and people’s normal production and life.Forest fires ng is one of the main methods of forest fire fighting in my country.Wind-powered fire extinguishers have gradually become a very important fire-extinguishing device for forest fires in my country,and have good fire-extinguishing effects in the early stage of the fire.At present,most of the wind-powered fire extinguishers used in our country are mainly portable.Due to the vibration of the portable wind-powered fire extinguisher and the long-term participation of firefighters in the fire-fighting work,these fire-extinguishing machines are quite a test of the physical fitness and endurance of the operators.There is a great safety hazard when entering the fire field.Therefore,in order to reduce the operating intensity of the operator and increase the safety and economy,it is necessary to design a self-propelled drainage forest wind fire extinguisher.By analyzing the basic theory of forest fire extinguishing,discussing the fire extinguishing method in the early stage of forest fire,it is analyzed that wind fire is the best way for the fire situation in the early stage of forest fire;Then,through the overall design requirements of the equipment,the overall structure layout and working principle of the equipment are determined,and the overall structural design and design of the key components,the crawler chassis,the push frame platform,the fork mechanism,the variable diameter fire extinguishing fan and the centrifugal fan system are carried out.Theoretical calculation and selection of related components.By analyzing the basic model of the drainage structure and the basic flow field model,the specific structural parameters of the variable-diameter fire extinguishing fan and the centrifugal fan are determined.Theoretical analysis and fluid simulation are carried out,and the cylinder is selected as the basic cylindrical structure of the telescopic air duct.Using Fluent fluid simulation,the third section of the fire extinguishing air duct diameter D₃,nozzle position S₀,the convergence angleθ₁ of the convergence chamber and the spray-mixing area ratioηto the velocity field inside the air duct of the drainage structure,the center line of the drainage air duct The velocity distribution and the velocity distribution at the outlet section of the mixing chamber are simulated by fluid,and the influence of these parameters on the wind speed at the air outlet of the air duct and the performance of the fire extinguisher is analyzed.The interactive effects of convergence angleθ₁ and nozzle position S₀are studied.Finally,Matlab is used to generate interactive response surfaces to determine the optimal drainage structure size parameters.Perform static analysis and modal analysis on the overall frame of the fire extinguisher,and verify that the strength,stiffness and stability of the design meet the design requirements through stress,displacement and mode shape cloud diagrams,and conduct trial production of the prototype to test the performance of the prototype.Evaluation,use Recur Dyn software to carry out dynamic simulation of its climbing and obstacle-surmounting performance,conduct climbing and obstacle-surmounting experiments on the prototype,and verify the design through the simulation and experimental comparison of the prototype and the 6MF-32 portable wind fire extinguisher.the superiority.