设计单级离心泵设计.docx

单级离心泵设计 摘 要 本设计从离心泵的基本工作原理出发，进行了一系列的设计计算。考虑离心泵基本工作性能，流量范围大，扬程随流量而变化，在一定流量下只能供给一定扬程（单级扬程一般 10～80m）。本设计扬程为 50m，泵水力方案通过计算比转数（n=67.5）确定采用单级单吸结构；通过泵轴功率的计算确定选择三相异步电动机；由设计参数确定泵的吸入、压出口直径；通过叶轮的水力设计确定叶轮的结构以及叶轮的绘型； 设计离心泵的过流部件，确定吸入室为直锥形吸入室，压出室为螺旋形压出室；设计轴的结构及进行强度校核；确定叶轮，泵体的密封形式及冲洗，润滑和冷却方式；通过查标准确定轴承，键以及联轴器，保证连接件的标准性。从经济可靠性出发，合理设计离心泵部件，选择标准连接件，保证清水离心泵设计的安全性，实用性，经济性。 关键词：离心泵工作原理；水力方案设计；叶轮和过流部件设计；强度校核；密封设计；键、轴承的选择 Centrifugal Pump Design Manual Abstract : This design starting from the basic working principle of the centrifugal pump, conducted a series of design calculations. consider the basic centrifugal pump performance, flow in a wide range, lift varies with the flow, the flow can only supply some lift (single-stage lift is generally 10~80m).The design head is 50m ,the design of the pump hydraulic scheme by calculating the number of revolutions(n=67.5) to determine the single-stage single-suction structure; choice of motor shaft power calculation; design parameters to determine the pump suction outlet diameter; determine the structure of the impeller and the impeller of the drawing of the hydraulic design of the impeller; flow parts of the design of centrifugal pump suction chamber for straight conical suction chamber, pressed out of the spiral-shaped pressure chamber; the structure and strength check of the axis design; determine the impeller centrifugal pump seal design, pump closed form and washing, lubrication, cooling method; determined by checking the standard bearings, and coupling to ensure that the standard connection. Departure from the economic viability of the rational design of centrifugal pump components, select the standard connector, to ensure the water using a centrifugal pump design safety, practicality, economy. Keyword: Centrifugal pump working principle ; Hydraulic design; Component design of the impeller and the over current; Strength check; Seal design; The choice of key and bearing 目 录 绪论 1 电动机的选择 2 原动机概述 3 原动机选择 3 泵有效功率 3 泵轴功率 3 泵计算功率 3 2.3.4