| 汽轮机低真空供热时最末级的运行特性分析 |
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| 引用本文： | 李勇 赵会刚 曹丽华 栾忠兴 徐立巍. 汽轮机低真空供热时最末级的运行特性分析[J]. 东北电力学院学报, 2004, 24(2): 6-9,25 |
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| 作者姓名： | 李勇 赵会刚 曹丽华 栾忠兴 徐立巍 |
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| 作者单位： | 东北电力学院,动力工程系,吉林,吉林,132012;营口第一热电厂,辽宁,营口,115001 |
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| 摘 要： | 首先对现有的汽轮机变工况热力计算方法进行了改造，使其适用于汽轮机低真空供热工况。然后，利用改进的变工况热力计算方法对CC12汽轮机低真空供热后最末级的理想焓降、前后压差、反动度及轴向推力进行了计算。计算结果表明，汽轮机低真空供热后，无论采用哪种方法来确定变工况后最末级的反动度，相对于原设计背压0.00502MPa，最末级的轴向推力都是减小的。
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| 关 键 词： | 汽轮机 低真空供热 最末级 运行特性 |
| 文章编号： | 1005-2992(2004)02-0006-04 |
The Operating Characteristic of the Last Stage While Steam Turbine Heat Supplying with Low Vacuum |
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| LI Yong ,ZHAO Hui gang ,CAO Li hua ,LUAN Zhong xing ,XU Li wei. The Operating Characteristic of the Last Stage While Steam Turbine Heat Supplying with Low Vacuum[J]. Journal of Northeast China Institute of Electric Power Engineering, 2004, 24(2): 6-9,25 |
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| Authors: | LI Yong ZHAO Hui gang CAO Li hua LUAN Zhong xing XU Li wei |
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| Affiliation: | LI Yong 1,ZHAO Hui gang 1,CAO Li hua 1,LUAN Zhong xing 2,XU Li wei 2 |
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| Abstract: | In this paper,the existing thermal performance calculating methods for steam turbines at off design conditions are improved so as to be applicable for the conditions of heat supplying with low vacuum.Then the new thermal performance calculating methods is used to calculate ideal enthalpy drop,pressure difference,degree of reaction and end thrust of the last stage of CC12 type steam turbine heat supplying with low vacuum.The calculating results indicate that no matter which methods are used to obtain the degree of reaction,while steam turbine heat supplying with low vacuum,the end thrust of the last stage can't be greater than it at design conditions. |
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| Keywords: | Steam turbine Heat supplying with low vacuum The last stage Operating characteristic |
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