机械5

高扬程水泵的设计 摘要 伴随国内经济的飞速发展，中国的制造业迎来的发展的春天。水泵作为一种通用机械，在国民经济各个领域中都得到了广泛的应用。供输送清水之用，效率高，性能范围广，运转安全平稳，噪声低，寿命长，零件互换性强，使用维护方便，产品规格齐全，覆盖面广。从上世纪中叶开始，随着泵工业技术的迅速发展，人们就开始致力于研究高扬程水泵并且得到了普遍的应用。高扬程水泵的适用范围非常广泛，从民用到农用再到工业生产都离不开高扬程水泵。高扬程水泵满足人们需要需要把介质远距离输送的需求。 本文在研究当前高扬程水泵的基础上，依据任务书给定的数据，确定原动机，由转数、比转数选择泵的结构形式；利用相似设计法对叶轮、轴、压出室、吸入室、托架进行了设计；对其结构装置及主要零部件进行设计、校核及分析。达到了锻炼学生思考和设计的能力，为立足社会夯实了基矗 关键词：水泵、高扬程、结构装置、设计、校核 ABSTRACT With the rapid developme
nt of the domestic eco
nomy, the developme
nt of Chi
na's ma
nufacturi
ng i
ndustry to usher i
n the spri
ng. As a ge
neral mecha
nical pump, the
natio
nal eco
nomy i
n various fields have bee
n widely used. For the tra
nsport of water use, high efficie
ncy, wide ra
nge of performa
nce, smooth operatio
n safety, low
noise, lo
ng life, parts i
ntercha
ngeability, easy mai
nte
na
nce, complete product specificatio
ns, wide coverage. From the begi
n
ni
ng of the ce
ntury, with the rapid developme
nt of i
ndustrial pump tech
nology, people bega
n worki
ng o
n high lift pump a
nd has bee
n widely used. Scope high lift pump is very wide, from civilia
n to agricultural a
nd the
n i
ndustrial productio
n are i
nseparable from the high lift pump. High lift pump
needs to meet the
needs of people
need lo
ng-dista
nce tra
nsport medium. Based o
n the curre
nt research o
n the basis of high-lift pump, accordi
ng to the missio
n stateme
nt give
n data to determi
ne the prime mover, the
number of revolutio
ns, revolutio
ns tha
n the formal structure of the pump selectio
n; use a similar method to the desig
n of the impeller, shaft, press out the room, i
nhalatio
n room, brackets were desig
ned; the desig
n, verificatio
n a
nd a
nalysis of equipme
nt a
nd major compo
ne
nts of its structure. Trai
ni
ng stude
nts to achieve the ability to thi
nk a
nd desig
n, based o
n the commu
nity as a solid fou
ndatio
n. Keywords pumps, high lift, co
nstructio
n equipme
nt, desig
n, verificatio
n 目录 摘要I ABSTRACT II 第1章绪论3 1.1本课题研究的目的及意义3 1.2水泵的发展概述3 1.3国内外水泵的发展现状4 1.4水泵的发展趋势5 1.5高扬程水泵的工作原理及结构分析7 1.6本课题研究的主要内容8 第2章总体方案的设计9 2.1设计参数的确定9 2.2总体结构的确定9 2.3原电机的选择9 2.3.1电动机型号的确定9 2.3.2比转数
ns和级数i的确定10 2.4吸入口直径、流速和吐出口直径的初定10 2.5最小汽蚀余量和汽蚀比转数的确定11 第3章主要零部件的设计13 3.1泵轴的设计13 3.2叶轮的设计14 3.3径向导叶的设计计算19 3.4吸入室的设计20 3.5平衡装置的设计计算21 第4章主要零部件的校核24 4.1叶轮盖板强度计算24 4.2叶片厚度计算25 4.3轮毂的强度计算25 4.4分段式多级泵中段计算25 4.5泵体密封面连接螺栓计算26 4.6轴的校核27 4.7键的强度校核28 第5章其他零部件的选择29 5.1轴承部件的选择29 5.2联轴器的选择29 结论30 致谢31 参考文献32