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進(jìn)口預(yù)旋對低比速離心泵無過載性能的影響
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國家自然科學(xué)基金資助項目（51279069）;江蘇高等學(xué)校優(yōu)秀科技創(chuàng)新團(tuán)隊資助項目(蘇教科(2009)10號);江蘇高校優(yōu)勢學(xué)科建設(shè)工程資助項目


Effect of Prewhirl Flow on Non-overload Performance of Low-specific-speed Centrifugal Pumps
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    摘要:

    采用徑向前置導(dǎo)葉實(shí)現(xiàn)預(yù)旋，將葉輪與前置導(dǎo)葉結(jié)合進(jìn)行研究，推導(dǎo)了有預(yù)旋離心泵的最大軸功率及其對應(yīng)流量的計算公式。分析了導(dǎo)葉幾何參數(shù)對泵理論揚(yáng)程曲線,、功率曲線,、理論最大流量,、最大軸功率及最大軸功率對應(yīng)流量的影響,。利用CFD軟件對幾何參數(shù)不同的8組方案進(jìn)行數(shù)值模擬,，將模擬結(jié)果與公式計算結(jié)果進(jìn)行對比,。驗(yàn)證了公式的正確性,，該公式對無過載離心泵設(shè)計具有指導(dǎo)作用。

    Abstract:

    Both the impeller and inlet guided vanes were studied. Considering the inlet prewhirl by using radial inlet guided vanes, the calculation formula of the pump’s maximum shaft power and its corresponding flow rate were deduced. The effects of inlet guided vanes’ geometric parameters on theoretical head curves, power curves, theoretical maximum flow rate, maximum shaft power and its corresponding flow rate were also analyzed. Then eight schemes with different geometric parameters were numerically simulated by using CFD software, the validity of the formula was verified by comparing numerical result and formula calculation, indicating that it can provide guidance for the design of non-overload centrifugal pump.

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施衛(wèi)東,李輝,陸偉剛,戴吉隆,李緒良.進(jìn)口預(yù)旋對低比速離心泵無過載性能的影響[J].農(nóng)業(yè)機(jī)械學(xué)報,2013,44(5):50-54,112. Shi Weidong, Li Hui, Lu Weigang, Dai Jilong, Li Xuliang. Effect of Prewhirl Flow on Non-overload Performance of Low-specific-speed Centrifugal Pumps[J]. Transactions of the Chinese Society for Agricultural Machinery,2013,44(5):50-54,112.

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  • 在線發(fā)布日期: 2013-04-28
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