双V形槽静电喷雾刀梁设计及流场特性研究  

Design of Double V Groove Electrostatic Spraying Blade and Study of Characteristics of Its Flow Field

作　　者：高全杰 夏志勇[1] 汪朝晖[1] 王维[1] 章伟红[1] 

机构地区：[1]武汉科技大学机械自动化学院,湖北武汉430081

出　　处：《机械设计与制造》2013年第8期21-24,共4页Machinery Design & Manufacture

基　　金：湖北省教育厅科学技术研究计划优秀中青年人才项目(Q20111108);武汉市学科带头人计划项目(201051730557);武汉科技大学青年科技骨干培育计划项目(2012XZ006)

摘　　要：为了解决高速轴对称喷头存在消耗大,大面积喷雾不均匀和效率低等问题,研究了一种双V形槽静电喷雾刀梁。通过建立模型并采用Fluent软件分析了刀梁内部流场分布规律及其影响因素。结果表明:双V形槽静电喷雾刀梁可满足低供油量大面积连续均匀喷雾需求,刀梁内部流场分布均匀,会产生小涡流,内部压力呈现"静压传递"特征,喷雾液入口速度、双V形槽凸起锥角以及刀梁缝隙宽度对刀梁内部流场分布规律有较大影响,且刀梁的最佳入口速度、凸起锥角和缝隙宽度分别为1m/s,45°和0.2mm。研究结果为设计新型刀梁和优化刀梁结构提供了理论依据。Double V groove electrostatic spraying blade was studied in order to solve the problems existing in spray by highspeed axisymmetric nozzles such as large consumption,spray unevenness and low efficiency when large area needed to be sprayed.Distribution of the beam＇s internal flow field and its influencing factors were analyzed by Fluent software.The results show that,the demand of low oil supplied and large area needed sprayed can be met by the double V groove electrostatic spraying blade,and the spray is continuous and uniform.The internal flow field distribution is homogeneous,small eddies had developed,and the internal pressure presents ＂static transfer＂characteristics in the double V groove.It has a great influence on the internal flow field distribution by inlet velocity of spray liquid,cone angle of the double V groove convex and the slit width of the blade.The best parameters of the inlet velocity,cone angle and slit width are 1m/s,45 and 0.2mm respectively.Theoretical basis for designing and optimizing a new spraying blade can be provided by results of the study.

关 键 词：刀梁 喷头 喷雾 流场 数值模拟 

分 类 号：TH16[机械工程—机械制造及自动化] S491[农业科学—植物保护]