| 汽轮机调节级静叶栅中采用多分流叶栅的研究 |
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| 引用本文： | 陶正良.汽轮机调节级静叶栅中采用多分流叶栅的研究[J].工程热物理学报,1997(5). |
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| 作者姓名： | 陶正良 |
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| 作者单位： | 华东工业大学动力工程学院热力涡轮机教研室!上海200093 |
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| 摘 要： | l引言调节级效率的高低，对整个汽轮机的效率有很大的影响，调节组的效率比中间级的效率低得多。所以，许多汽轮机厂和研究所一直把改善和提高调节级效率作为研究的课题之一。由于相对叶高对叶栅的端部损失影响很大，因而调节级叶片不能太短，只能采用部分进汽度结构，造成了部分进汽损失，这一损失占据调节级的比重很大。例如上海汽轮机厂的125MW机组的调节级叶栅中，叶型损失为6％其中型面损失为1％，端部损失为5凡而部分进汽损失，按照上海汽轮机厂应用的公式计算，部分进汽损失在设计工况时达到8．49％。因此决定调节级效率高低的主要…
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| 关 键 词： | 汽轮机 调节级静叶栅 多分流叶栅研究 |
RESEARCH ADOPTING MULTI-SPLITTER CASCADE IN THE CONTROL STAGE STATIC CASCADE OF THE STEAM TURBINE |
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| TAO Zhengliang.RESEARCH ADOPTING MULTI-SPLITTER CASCADE IN THE CONTROL STAGE STATIC CASCADE OF THE STEAM TURBINE[J].Journal of Engineering Thermophysics,1997(5). |
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| Authors: | TAO Zhengliang |
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| Abstract: | In order to improve the aerodynamic efficiency of steam turbine control stage, the paper presellts multi-splitter cascade structure to be used in the conirol stage. Based on calculation and analysis, this structure can obviously increase the degree of partial admission in the control stage and reduce the partial admission loss. Meanwhile, it also improves considerably the aerodynamic performance in the cascad end. Through comparvision for three schemes, we have designed a good scheme of the multi-splitter cascade. |
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| Keywords: | steam turbine the control stage static cascade research on multi-splitter cascade |
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