【摘要】：為了整體提高軸流泵的水力優(yōu)化設(shè)計水平,找出影響軸流泵性能的主要幾何參數(shù),運用正交試驗方法,以揚程、效率、軸功率和壓力脈動作為試驗評判指標,將綜合頻率分析法應(yīng)用到軸流泵多目標優(yōu)化設(shè)計中�；贚_9(3~4)正交表得到了9組方案,研究葉片數(shù)、翼型、輪轂比和葉片與導(dǎo)葉間距離對軸流泵的揚程、效率、軸功率和壓力脈動的影響規(guī)律,并通過綜合頻率分析法確定了一組最佳試驗方案。結(jié)果表明:該最佳試驗方案在設(shè)計流量下,水流在葉輪及導(dǎo)葉段中的流態(tài)較好,水流流線順暢,分布相對均勻;軸流泵模型在流量和揚程滿足改型要求的同時,效率提高了5.7%;軸功率下降了1.21%;壓力脈動系數(shù)降低了11%,驗證了綜合頻率分析法在多目標正交優(yōu)化中的可行性。
[Abstract]:In order to improve the hydraulic optimum design level of axial flow pump as a whole and find out the main geometric parameters that affect the performance of axial flow pump, the orthogonal test method is used to evaluate the performance of axial flow pump with lift, efficiency, shaft power and pressure pulsation. The synthetic frequency analysis method is applied to the multi-objective optimization design of axial flow pump. Nine groups of schemes were obtained on the basis of LSP 9 (3 / 4) orthogonal table. The effects of blade number, airfoil, wheel hub ratio and distance between blade and guide vane on the lift, efficiency, shaft power and pressure pulsation of the axial flow pump were studied. A group of optimal test schemes were determined by comprehensive frequency analysis method. The results show that the flow pattern in the impeller and guide vane is better, the flow line is smooth and the distribution is relatively uniform, and the axial flow pump model meets the requirements of the modification of the flow rate and the head at the same time as the flow rate and the head meet the requirements of modification. The efficiency is increased by 5.7, the axial power is reduced by 1.21, and the pressure fluctuation coefficient is reduced by 11, which verifies the feasibility of the comprehensive frequency analysis method in the multi-objective orthogonal optimization.
【作者單位】： 河海大學水資源高效利用與工程安全國家工程研究中心;河海大學水利水電學院;河海大學能源與電氣學院;江蘇省江都水利工程管理處;
【基金】：國家自然科學基金重點項目(51339005)、國家自然科學基金面上項目(51579080) 安徽省自然科學基金面上項目(1608085ME119)
【分類號】：TH312

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