| 汽轮机低压进汽结构设计的数值模拟分析 |
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| 引用本文： | 唐宁,孟成,仪剑,吴仕芳,忻建华. 汽轮机低压进汽结构设计的数值模拟分析[J]. 华东电力, 2011, 0(8) |
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| 作者姓名： | 唐宁 孟成 仪剑 吴仕芳 忻建华 |
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| 作者单位： | 上海交通大学;上海电气电站设备有限公司; |
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| 基金项目： | 上海市科委科技攻关项目(08DZ1204200)~~ |
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| 摘 要： | 用数值模拟的方法对某汽轮机中压排汽至低压进汽间的无叶通道的气动性能进行了分析。针对原始模型不良的气动结构,提出了改进方案。比较两种模型的总压损失系数和低压缸进汽口环形截面速度分布的均匀性,改进模型的总压损失降低7.82%,约提高中压缸效率0.33%、折合机组煤耗率下降约0.3 g/(kW.h),同时低压缸进汽速度均匀程度有一定的提高,对提高低压缸的效率也是有益的。
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| 关 键 词： | 低压缸 数值模拟 性能 优化设计 |
Analysis of Numerical Simulation on the Structural Design of LP Inlet Flow for Steam Turbine |
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| TANG Ning,MENG Cheng,YI Jian,WU Shi-fang,XIN Jian-hua. Analysis of Numerical Simulation on the Structural Design of LP Inlet Flow for Steam Turbine[J]. East China Electric Power, 2011, 0(8) |
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| Authors: | TANG Ning MENG Cheng YI Jian WU Shi-fang XIN Jian-hua |
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| Affiliation: | TANG Ning1,MENG Cheng1,YI Jian2,WU Shi-fang2,XIN Jian-hua1(1.Shanghai Jiao Tong University,Shanghai 200240,China,2.Shanghai Electric Power Generation Equipment Co.Ltd,China) |
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| Abstract: | The flow properties of non-vane passage between a low pressure inlet and an intermediate pressure outlet of a steam turbine are analyzed by a method of numerical simulation.According to the undesirable pneumatic structure of original model,a novel option is proposed.The total pressure loss ratio and the homogeneity of velocity distribution on circular cross-section of inlet flow in low pressure cylinder of the two models are compared,which shows 7.82 percent of the coefficient of total pressure are reduced ... |
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| Keywords: | low pressure(LP) cylinder numerical simulation performance optimal design |
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