水泵及水泵站复习材料

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1、第一章水泵定义：是输送和提升液体的机器，他把原动机的机械能转化为输送液体的能量分类：叶片式，容积式，其他类。发展趋势：大型化大容量化；高扬程化高速化；系列化通用化标准化。第二章水泵基本构造：固定部分，转动部分，轴封部分水泵基本参数：1、流量—水泵在单位时间内所输送的液体数量2、扬程—水泵对单位重量液体所作之功3、轴功率—泵轴得自原动机所传递来的功率称为轴功率，以N表示4、效率—水泵的有效功率与轴功率之比，以η表示5、转速—水泵叶轮的转动速度，通常以每分钟转动的次数来表示，以字母n表示。6、允许吸上真空高度Hs—指水泵在

2、标准状况下(即水温为20℃、表面压力为一个标推大气压)运转时．水泵所允许的最大的吸上真空高度。单位为mH207、气蚀余量(Hsv)——指水泵进口处，单位重量液体所具有超过饱和蒸气压力的富裕能量。水泵厂一般常用汽蚀余量来反映轴流泵、锅炉给水泵等的吸水性能。单位为mH2Othereportontheworkofvariousdepartments,superviseandinspectthemanagementandprojectimplementationandresultsofimplementingfinancial

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7、ny,effectivecorrectivemeasurestoensuretheachievementofbusinessobjectivesfortheyear;1.4theobjectivefixed:accordingtomarkettrendsandemergingissueswithinthecompany,calledspecialtopicsinbusinessmanagementstrategysessionon...2.6compensationandbenefitsmanagement:polic

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