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AXIAL-FLOW PUMP IMPELLER DESIGN METHOD BASED ON AXIAL DISTANCE
AXIAL-FLOW PUMP IMPELLER DESIGN METHOD BASED ON AXIAL DISTANCE
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机译：基于轴距的轴流泵叶轮设计方法
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摘要
Disclosed is an axial-flow pump impeller design method based on an axial distance, the method comprising the following steps: (1) on the basis of an axial-flow pump impeller axial length L design function L = l × sinβL, and according to given design parameters, i.e. a flow Q, a lift H, a rotating speed n and a specific speed ns, designed for an axial-flow pump, dividing sections at equal intervals from a hub of an impeller to an outer edge of the impeller, and determining the number of the sections and the number of blades by means of the specific speed ns; then, determining an airfoil chord length l and a blade angle βL of the impeller of the axial flow pump; (2) by taking the airfoil chord length l and the blade angle βL as benchmark coefficients, determining the diameter D of the impeller, the diameter dh of the hub, and a pitch t; and (3) selecting a 791 airfoil thickness variation rule for blade thickening. The method can effectively control the axial length of an impeller of an axial-flow pump.
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机译：公开了一种基于轴向距离的轴流泵叶轮的设计方法，该方法包括以下步骤：（1）基于轴流泵叶轮的轴向长度L设计函数L ＝ l×sinβ L ，并根据给定的设计参数，即为轴流泵设计的流量Q，升程H，转速n和特定转速n s ，在从叶轮的轮毂到叶轮的外边缘相等的间隔，并通过特定速度n s 确定截面的数量和叶片的数量;然后，确定轴流泵叶轮的翼型弦长l和叶片角β L 。 （2）以翼型弦长l和叶片角β L 为基准系数，确定叶轮直径D，轮毂直径d h ，螺距t; （3）选择791翼型厚度变化规则进行叶片增厚。该方法可以有效地控制轴流泵的叶轮的轴向长度。
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