汽轮机课程设计-汽轮机通流部分热力设计(2)

目录

目录.....................................................................................................................................................2课程设计任务.....................................................................................................................................4第一章汽轮机热力计算.................................................................................................................5

1.汽轮机基本参数和结构的选择...........................................................................................5

1.1机组基本参数的确定.................................................................................................51.2汽轮机基本结构形式的选择.....................................................................................62.近似热力过程线的拟定.......................................................................................................6

2.1损失的估计.............................................................................................................62.2非再热过程热力线的拟定....................................................................................6

第二章抽汽回热系统热平衡初步计算..........................................................................................9

1.汽轮机进汽量估算................................................................................................................92.抽汽回热系统热平衡初步计算...........................................................................................9

2.1给水温度的选取..........................................................................................................92.2回热抽汽级数的选择.................................................................................................92.3除氧器的工作压力...................................................................................................102.4回热系统图的拟定...................................................................................................102.5各加热器汽水参数计算...........................................................................................102.6各加热器回热抽汽量计算.......................................................................................12

第三章汽轮机漏汽量的计算........................................................................................................14

1.阀杆漏气量的计算................................................................................................................14

1.1主汽阀阀杆漏汽量的计算.......................................................................................141.2调节阀阀杆漏汽量的计算.......................................................................................152.轴封漏汽量的计算.............................................................................................................15

2.1前轴封漏气量计算...................................................................................................152.2后轴封漏汽...............................................................................................................17

第四章调节级的选型及热力计算................................................................................................19

1.调节级选型..........................................................................................................................192.调节级热力参数的选择.....................................................................................................193、调节级几何参数的选择....................................................................................................194.调节级详细计算..................................................................................................................20

4.1第一列喷嘴热力计算...............................................................................................204.2.动叶部分计算..........................................................................................................224.3导叶热力计算：.......................................................................................................234.4第二列动叶热力计算................................................................................................24

第五章压力级的计算.....................................................................................................................26

1.各级平均直径的确定.........................................................................................................262.级数的确定及比焓降的分配.............................................................................................26第六章整机校核及计算结果的汇总............................................................................................28

1整机校核................................................................................................................................28

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