基于气固两相流的电动扫路机吸嘴结构参数设计  

Structural parameter design of electric sweeper nozzle based on gas-solid two-phase flow

作　　者：欧阳联格 肖强 周文俊 周水庭 Ouyang Liange;Xiao Qiang;Zhou Wenjun;Zhou Shuiting(School of Mechanical and Automotive Engineering,Xiamen University of Technology,Xiamen 361024,Fujian,China;Fujian Collaborative Innovation Center for Passenger Cars and Special Vehicles,Xiamen 361024,Fujian,China;Fujian New Energy Automobile and Safety Technology Research Institute,Xiamen 361024,Fujian,China)

机构地区：[1]厦门理工学院机械与汽车工程学院,厦门361024 [2]福建省客车及特种车辆研发协同创新中心,厦门361024 [3]福建省新能源汽车与安全技术研究院,厦门361024

出　　处：《现代制造工程》2020年第6期115-123,共9页Modern Manufacturing Engineering

基　　金：福建省重点产品研发类项目(2016AYF005)。

摘　　要：为了提高电动扫路机吸尘效率,利用CATIA、ANSYS-Fluent等软件对吸嘴流道模型进行建模与流场分析,讨论各参数对吸嘴内部流场影响规律,提出了吸嘴结构参数优化方案,并对吸嘴进行气固两相流分析,得到砂粒粒径、风机负压对吸尘效率影响规律。研究结果表明:当吸管倾斜角为55°、前挡板倾斜角为65°时,吸嘴内部流场更加顺畅,系统能量损失较小,在满足吸嘴吸尘效率的前提下,找到风机提供最优的负压值。最后通过实验对吸嘴主进风口关键点静压值、风速大小与仿真数据进行对比,得到的误差在规定范围内,说明模型有效,仿真结果可信。In order to improve the efficiency of vacuum cleaning of electric sweepers,modeling and flow field analysis of the nozzle flow path model were carried out by software such as CATIA and ANSYS-Fluent,and the influence law of each parameter on the internal flow field of the nozzle was discussed.Finally,the parameter optimization scheme of the nozzle structure was proposed.At the same time,the gas-solid two-phase flow analysis of the nozzle was carried out,and the influence of the grain size of the sand and the negative pressure of the fan on the efficiency of vacuuming was obtained.Research indicates:when the suction pipe inclination angle is 55°and the front bezel inclination angle is 65°,the flow field inside the nozzle is smoother and the system energy loss is smaller.Find the optimal negative pressure value of the fan under the premise of satisfying the suction efficiency of the nozzle.Finally,through experiment,the static pressure value and wind speed of the key inlet of the nozzle were compared with the simulation data,and the error obtained was within the specified range.The results explain that the model was valid and the simulation results are reliable.

关 键 词：电动扫路机 吸嘴 流场分析 气固两相流 吸尘效率 

分 类 号：TH122[机械工程—机械设计及理论]