混输泵过渡段对吸入室出口处流场的影响  

The effect of the multiphase pump transition section on the exit flow field of the suction chamber

作　　者：马希金[1] 牛聪[1] 秦霞[1] 

机构地区：[1]兰州理工大学流体动力与控制学院

出　　处：《石油机械》2010年第5期39-41,104,共3页China Petroleum Machinery

基　　金：甘肃省科技攻关项目"轴流式油气混输泵的研制"(GK954-3-11)

摘　　要：在设计半螺旋形吸入室的过程中,各断面面积和形状往往要经过多次修改,即使在断面面积符合设计值的前提下,设计者也只能凭经验来估计流道是否圆滑。为此,利用Pro/E软件建立了半螺旋形吸入室三维模型,再利用STAR-CD软件对吸入室流场进行模拟计算,并对其进行分析,找出其中的不合理之处。研究结果认为,在吸入室的出口处增加一段环形流道很有必要,能为叶轮入口提供均匀来流;近90°过渡段对流体来说近似于绕流,流体的速度在这里有了明显的变化,而吸入室出口处过渡段的增加消除了这种不均匀性。In the process of designing the semi-spiral suction chamber,the area and form of the sections are always modified several times.Even if the section area is in agreement with the design value,the designer can only depend on their own experiences to judge whether the flow channel is smooth.Therefore,the Pro/E software was adopted to establish the three-dimensional model of the semi-volute suction chamber.And then the STAR-CD software was used to conduct a simulation calculation of the chamber flow field and analyze the result so as to find out the unreasonable aspects.The result holds that it is quite necessary to add a section of annular channel at the exit of the suction chamber,which can provide even inflow for impeller entry.The proximate 90° transition section is nearly a flow around the fluid.The speed of fluid changes remarkably here and addition of the transition section at the exit of the chamber helps to remove the unevenness.

关 键 词：半螺旋形吸入室 过渡段 切片 流场分析 三维模型 

分 类 号：TP391.72[自动化与计算机技术—计算机应用技术]