| 汽轮机隔板的塑性变形分析 |
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| 引用本文： | 周轶喆,刘明军,胡柳欣,袁益,忻建华. 汽轮机隔板的塑性变形分析[J]. 动力工程, 2009, 29(1) |
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| 作者姓名： | 周轶喆 刘明军 胡柳欣 袁益 忻建华 |
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| 作者单位： | 周轶喆,ZHOU Yi-zhe(国电浙江北仑第一发电有限公司,宁波,315800;浙江大学,机械与能源工程学院,杭州,310027);刘明军,LIU Ming-jun(浙江浙能北仑发电有限公司,宁波,315800);胡柳欣,袁益,忻建华,HU Liu-xin,YUAN Yi,XIN Jian-hua(上海交通大学动力机械与工程教育部重点实验室,上海,200240) |
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| 摘 要： | 对某电厂汽轮机中压缸第11级隔板进行三维有限元计算,得到了该隔板的应力分布及挠度分布.结果表明:隔板最大应力发生在隔板外环叶片的出汽侧,其值为160 MPa.通过对隔板的挠度试验数据、有限元计算结果、机组长期运行和历次检修数据的分析,认为:隔板刚度设计不足,运行过程中应力偏大,温度超过467℃,而且变形过程还具有蠕变变形等特征.这表明隔板的塑性变形是由材料的蠕变变形引起的.为了保证机组的安全经济运行和维护保养,建议对该级隔板进行蠕变变形和轴向间隙量的深入计算,并对其进行剩余寿命评估.
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| 关 键 词： | 汽轮机 隔板 塑性变形 挠度 强度 有限元 |
The Analysis of Plastic Deformation for the Turbine Diaphragm |
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| ZHOU Yi-zhe,LIU Ming-jun,HU Liu-xin,YUAN Yi,XIN Jian-hua. The Analysis of Plastic Deformation for the Turbine Diaphragm[J]. Power Engineering, 2009, 29(1) |
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| Authors: | ZHOU Yi-zhe LIU Ming-jun HU Liu-xin YUAN Yi XIN Jian-hua |
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| Affiliation: | 1;2;1.Zhejiang Beilun No.1 Generation Co.;Ltd.of National Grid;Ningbo 315800;China;2.School of Mechanical and Power Engineering;Zhejiang University;Hangzhou 310027;3.Zhejiang Beilun Generation Co.;Ltd.of Zhejiang Power;4.MOE's Key Lab of Power Machinery and Engineering;Shanghai Jiaotong University;Shanghai 200240;China |
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| Abstract: | Stress and deflection distribution of the 11th stage turbine diaphragm in IP cylinder was obtained by calculating with finite element analysis software.Results show that the maximum stress is 160MPa located at trailing edge of the blade in the outer ring of the diaphragm.Based upon the analysis of the experimental data about deflection,the result of finite elements calculation,and the history data of steam turbine operation and maintenance,it can be considered as deficiency rigid design of diaphragm,too lar... |
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| Keywords: | steam turbine diaphragm plastic deformation deflection strength finite element |
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