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'an improved francis turbine runner reducing runaway speed of the turbine without compromising efficiency and cavitation characteristic'
'an improved francis turbine runner reducing runaway speed of the turbine without compromising efficiency and cavitation characteristic'
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机译：“改进的弗朗西斯水轮机转轮可在不影响效率和气蚀特性的情况下降低水轮机的失控速度”
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摘要
The invention relates to an improved Francis turbine runner reducing runaway speed of the turbine without compromising efficiency and cavitation characteristic, the improvement is characterized in that the maximum permissible value of technical parameter "ξ" and specific speed of the turbine runner are selected for construction according to the technical relationship: ξ= A[(N]s)3-B[(N]s)2 + C[(N]s)+D Where, A = 3.702E-08 B = 4.804E-04 C = 3.447E-01 D = 3.473E+01
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机译：本发明涉及一种改进的弗朗西斯水轮机转轮，其在不影响效率和气穴特性的情况下降低了水轮机的失速，其特征在于，根据结构选择了技术参数“ξ”的最大允许值和水轮机的比速。到技术关系：ξ= A [（N] s）3-B [（N] s）2 + C [（N] s）+ D其中，A = 3.702E-08 B = 4.804E-04 C = 3.447E-01 D = 3.473E + 01
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