背叶片形状与数目组合设计对渣浆泵特性的影响  

Influence of BackBlade Shapeand Number Combination Design on Slurry Pump Characteristics

作　　者：何峻 He Jun

机构地区：[1]四川信息职业技术学院现代制造学院,628240

出　　处：《工程机械》2024年第6期85-91,I0021,I0022,共9页Construction Machinery and Equipment

摘　　要：为了研究背叶片几何参数对渣浆泵特性的影响规律,以40ZJ-33型渣浆泵为研究对象,通过改变前后泵腔背叶片形状和数目,得到4种背叶片参数组合方案,并利用ANSYS软件对各背叶片方案进行固液两相流数值模拟计算,得到背叶片形状和数目变化对渣浆泵外特性、泵腔液体压力以及轴向力的影响规律。结果表明:背叶片的形状对渣浆泵外特性的影响占主导地位,采用后弯式背叶片能够提高渣浆泵效率,但会降低渣浆泵扬程;采用径向直背叶片以及背叶片数目适当增大,能够减小前后泵腔整体压力;各流量工况下,轴向力先增大后减小,背叶片形状为后弯、数目为12枚时轴向力最小,背叶片形状为后弯、数目为8枚时轴向力最大,采用径向直背叶片时,背叶片数目增大会使轴向力增大。To study the influence law of geometric parameters of back blades on the slurry pump characteristics,with the 40ZJ-33 slurry pump as the research object,four combination plans of back blade parameter are obtained by changingthe shapes and numbers of back blades in the front and rear of the pump chamber,and software ANSYS is used for numerical simulation and calculation of solid-liquid two-phase flow of each back blade plan to obtain the influence law of changes in back blade shapes and numbers on the external characteristics of the slurry pump,liquid pressure of the pump chamber and axial force.The results show that,the shape of the back blade has a dominant influence on the external characteristics of the slurry pump,and the use of backward curved back blades can improve the efficiency of the slurry pump but will reduce the pump head.The use of radial straight back blades and the appropriate increase in the number of backblades canreducethe overall pressure in the front and rear of the pump chamber.Under each flow condition,the axial force of A1 to A4plans increases and then decreases,the axial force is the smallest when the shape of back blades is backward curved and the numberis 12,the axial force is the largest when the shape of back blades is backward curved and the number is 8,and the increase of the number of back blades lead to the increase of the axial force when the radial straight back blades are used.

关 键 词：渣浆泵 背叶片 数值模拟 

分 类 号：TH311[机械工程—机械制造及自动化]