Optimized Design Of S-type Fire Monitor Body Based On CFD Technology

With the rapid development of our country’s economy,the level of urbanization is increasing,and the shortage of land resources brought about by this is also highlighted.Under this trend,our country’s high-rise buildings have grown rapidly.Due to the dense population of high-rise buildings,the material is more concentrated.If a fire occurs,it is easy to generate the effect of the chimney,and eventually form a vertical combustion.For such fires,the vehicle fire monitor is the most critical extinguishing component for the fire engine.It has an important role in the extinguishing of high-rise buildings,and its performance is of great significance for improving fire fighting capacity.This topic first briefly introduces the classification of fire monitor and the application and development of domestic and foreign applications,enumerating the common form of common fire monitors,analyzing the shortcomings of U-type series and parallel fire monitor.By comparing,the necessity of new S-type series fire monitor studies is proposed.Then,in detail,the working principle and workflow of the S-type fire cannon is introduced,and the system description of the S-type fire monitor’s mechanism is then.Then according to market research and national standard,design parameters.According to parameter requirements,establish fitting equation of the fire monitor’s jet track and model of multi-curved energy loss,using reverse checking method,conduct theoretical design of fire monitor head,fire monitor body and transmission mechanism.Provide the basis for fire monitor’s structure optimization and fluid mechanical emulation of this topic.According to the design parameters,the 3D model of the fire monitor body is established,and create the simulation fluid domain model using UG.Based on the fluid domain model,using the ANSYS WORKBENCH for model processing and fluid mechanical emulation.According to the simulation results,develop an optimization scheme,and perform simulation verification,then determine the improved rationality and performance parameters.Gradually improve the body structure.Finally,the optimal structure is determined,and correct structural parameters.Complete CAD model creation.Finally,manufactured the prototype before and after optimization according to the CAD model.Applying SLS processes,quick precision casting of fire monitor body after the optimization is used,and the prototype is formed by precision machining and surface treatment.Co MPare pressure loss,jet stability and range of fire monitor body before and after optimization.According to national relevant standards and practical performance requirements,comprehensive performance testing,verification,effectiveness,and stability of optimization results are verified.The test results show that the results of the optimized fire monitor body are better,and the performance parameters are satisfied and higher than design demand,with better jet performance.There are 101 figures,32 forms and 81 references in this paper.