Optimization and Comparison of Two Technologies for the Manufacture of Blades for Flow path HPC Turbine K-330-23.5

NTU "KhPI" Bulletin: Power and heat engineering processes and equipment Pub Date : 2021-10-28 DOI:10.20998/2078-774x.2021.01.01

Oleksandr Usatyi, O. Avdieieva, I. Palkov, Sergii Palkov, O. Ishchenko

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Abstract

The article presents the results of multiparameter optimization of the structural and thermogasdynamic parameters of the flow path of the HPC K-330-23.5, obtained using the developed CAD “Turboagregat”. The found 12 optimal solutions for the flow path of the HPCK-330-23.5 make it possible not only to assess the effect of the design parameters and the number of blades of the HPC stages on the HPC efficiency, but also to carry out a comparative analysis of two technological approaches to manufacturing the rotor blades – with and without trimming the initial edges. Calculations have confirmed the negative effect of increasing the radius of the “tummy” circle on the nature of the flow and on the efficiency of the cascades. In cascades with increased profiles by 9.83 % with a radius of the “tummy” circle, the coefficient of profile losses of the cascade increased by 0.07 % (absolute) in comparison with the original cascade from the original 1MMK-U profiles.

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K-330-23.5流道高性能透平叶片两种制造工艺的优化与比较

本文介绍了利用已开发的CAD“Turboagregat”对HPC K-330-23.5流道结构和热气动力学参数进行多参数优化的结果。通过对HPCK-330-23.5流道的12个最优解的分析，不仅可以评估设计参数和HPC级叶片数量对HPC效率的影响，还可以对两种制造转子叶片的工艺方法进行对比分析——修整初始边缘和不修整初始边缘。计算证实了增加“肚子”圆半径对流动性质和叶栅效率的负面影响。在“肚子”圆半径增加了9.83%的叶栅中，叶栅的叶型损失系数比原始1MMK-U叶栅增加了0.07%(绝对)。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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NTU "KhPI" Bulletin: Power and heat engineering processes and equipment

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