| 汽轮机内缸二维温度场计算模型 |
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| 引用本文： | 张学凯,盛文彦,王艳泽.汽轮机内缸二维温度场计算模型[J].发电设备,2009,23(3):153-156. |
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| 作者姓名： | 张学凯 盛文彦 王艳泽 |
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| 作者单位： | 1. 中国电能成套设备有限公司,北京,100011
2. 中国钢研科技集团公司,北京,100081 |
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| 摘 要： | 为研究汽轮机内缸温度场，在二维圆筒壁非稳态导热微分方程的基础上，得出了汽轮机内部蒸汽温度沿轴向线性分布、随时间非线性变化、外壁对流换热的温度场迭代计算公式。该模型与有限元计算结果的对比表明，所得模型计算精度高，速度快，可用于汽轮机内缸温度场的计算，进而可计算出内缸的轴向热膨胀。
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| 关 键 词： | 汽轮机 汽缸 温度场 导热微分方程 |
Computing Model for Two-dimensional Temperature Field of Steam Turbine Inner Cylinders |
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| ZHANG Xue-kai,SHEN Wen-yan,WANG Yan-ze.Computing Model for Two-dimensional Temperature Field of Steam Turbine Inner Cylinders[J].Power Equipment,2009,23(3):153-156. |
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| Authors: | ZHANG Xue-kai SHEN Wen-yan WANG Yan-ze |
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| Affiliation: | ZHANG Xue-kai1,SHENG Wen-yan1,WANG Yan-ze21.China Power Complete Equipment Co.,Ltd.,Beijing 100011 China,2.China Iron & Steel Research Institute Group,Beijing 100081,China |
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| Abstract: | Based on 2D unstable heat conduction differential equation of cylinder walls,iterative formulas for temperature field calculation of steam turbine's inner cylinder are obtained,inside which the steam temperature is linearly distributed along axial direction,and varies nonlinearly with time,while on the outer wall,heat convection exists.Compared with finite element calculation way,the model gives calculation results with high precision at a faster speed,which may be applied for relevant temperature field cal... |
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| Keywords: | steam turbine cylinder temperature field differential equation of heat conduction |
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