文档介绍：毕业设计(论文)
题目:扬程H=36m流量Q=78m3/h 单级单吸离心泵设计
姓名: 孙婷婷
专业: 过程装备与控制工程
学院: 继续教育学院
学习形式:
助学单位:
指导教师:
2013年8月
单级单吸离心泵设计字号、字体格式不对
摘要
论文通过对单级单吸清水离心泵的性能指标进行行业调查,在收集大量数据的基础上,将效率、汽蚀余量性能指标的实测值与国家标准规定值及样本数值进行比较,对立式结构、卧式结构分别进行统计、整理,详细地介绍了现状,指出了样本数据普遍与实测数据不一致、低比转速的性能指标技术水平相对好一些及立式结构的效率性能指标偏低,并对整理结果进行详细技术分析。通过计算和分析,确定总体参数、配套功率和各部分的尺寸。离心泵的水力性能主要取决于离心泵的水力设计,它包括叶轮设计、压出室和吸入室的设计。目前离心泵水力设计方法有两种:模型换算法和速度系数法。速度系数法是根据经验统计获得速度系数经验值来计算设计模型的各参数,也具有一定可靠性,而且不受水力模型限制,本设计采用速度系数法进行水力设计。使之达到理想的效果,具有良好的性能.
关键词:离心泵;单级单吸; 效率; 汽蚀余量;
空行太多,此处不应该有空行,以下各章节同
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=) 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 ponents, 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
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