| 采用边界层抽吸方法提高透平通流部分效率 |
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| 引用本文： | 孙弼 刘晓峰. 采用边界层抽吸方法提高透平通流部分效率[J]. 西安交通大学学报, 1996, 30(6): 48-53 |
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| 作者姓名： | 孙弼 刘晓峰 |
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| 作者单位： | 西安交通大学 |
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| 摘 要： | 介绍采用边界层抽吸提高透平通流部分效率的方法，给出了叶栅部次流损失与来流边界导位移厚度间的定量关系，通过边界层计算和透平级通流计算，确定合理的抽吸流量和相关的透平级通流部分主要结构尺寸，分析对透平极效率及热力特性的影响，对２００ＭＷ汽轮机高压缸的计算表明，主要抽吸技术，可使缸效率提高０．４％左右。
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| 关 键 词： | 边界层 抽吸 汽轮机 透平级通流 透平级效率 |
IMPROVING THE EFFICIENCY OF TURBINE THROUGH-FLOW PASSAGE USING THE TECHNIQUE OF BOUNDARY LAYER SUCTION |
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| Sun Bi,Liu Xiaofeng, Yan Yupeng. IMPROVING THE EFFICIENCY OF TURBINE THROUGH-FLOW PASSAGE USING THE TECHNIQUE OF BOUNDARY LAYER SUCTION[J]. Journal of Xi'an Jiaotong University, 1996, 30(6): 48-53 |
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| Authors: | Sun Bi Liu Xiaofeng Yan Yupeng |
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| Abstract: | A method to improve the efficiency of the turbine through-flow passage using the technique of boundary layer suction is introduced. The quantitative relationship between the secondary loss in turbine blade rows and the upstream boundary layer displacement thickness is given. With the calculations of boundary layer and turbine through-flow, the rational suction flow rate and main structure size of the turbine thrugh-flow passage are determined.The influences of suction on the turbine stage efficiency and the thermal performance are also analyzed. The calculation results for the HP cylinder of a 200 MW steam turbine show that the cylinder efficiency may be increased by 0.4% using the technique of boundary layer suction. |
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| Keywords: | turbine boundary layer suction efficiency |
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