热能与动力工程毕业论文.doc

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热能与动力工程毕业论文
题 目：500MW机组给水泵选型、布
置及不同驱动形式的经济性比较
院 （部）：热能工程学院
专 业：
班 级：
姓 名：
学 号：
指导教师：
完成日期：
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目 录
摘 要··································································Ⅲ
ABSTRACT·······························································Ⅳ
1 前 言 ································································1
2 给水系统的确定·······················································2
单母管制系统··························································2
切换母管制给水系统····················································2
单元制给水系统························································3
3 给水泵型号的选择·····················································5
给水泵的扬程··························································
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5
给水泵的配置··························································6
给水泵流量的确定·····················································11
4 CHTA型高压锅炉给水泵··············································13
CHTA型高压锅炉给水泵的介绍·········································13
50CHTA/6型高压锅炉给水泵的性能曲线··································15
CHTA型泵的监视和保护···············································16
CHTA型泵的外形和安装尺寸···········································18
5 给水泵入口静压力的计算·············································21
除氧器的运行方式·····················································21
滑压除氧器在机组负荷改变时的运行状况
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·································22
给水泵入口静压力的确定···············································24
防止给水泵汽蚀的方法·················································27
6 给水泵的拖动························································30
电动给水泵和汽动给水泵的选择原则·····································30
给水泵