【摘要】：以南水北調(diào)東線淮安三站后置燈泡貫流泵裝置為研究對象,采用ANSYS CFX數(shù)值模擬方法,并通過試驗(yàn)進(jìn)行驗(yàn)證,計(jì)算并分析了不同的前導(dǎo)葉體葉片位置對進(jìn)水流道水力性能以及泵裝置能量特性的影響.結(jié)果表明:前導(dǎo)葉葉片由原設(shè)計(jì)位置向葉輪方向移動(dòng)500 mm(此時(shí)與進(jìn)水流道出水?dāng)嗝婢嚯x為0.064 5D)之后,設(shè)計(jì)工況下泵裝置的效率較原來相比提高了1.28%;同時(shí)還使得進(jìn)水流道的水力損失明顯下降,降低了流道損失;改善了進(jìn)水流道剖面的速度分布;不同工況下進(jìn)水流道出水?dāng)嗝娴妮S向速度分布均勻度與速度加權(quán)平均角的值均有顯著提高,轉(zhuǎn)輪室的吸入流態(tài)得到了明顯的改善.前導(dǎo)葉葉片位置對進(jìn)水流道與泵裝置的影響并不是簡單的線性關(guān)系,前導(dǎo)葉體葉片位置與葉輪之間的距離存在著最優(yōu)搭配.
[Abstract]:In this paper, an ANSYS CFX numerical simulation method is used to calculate and analyze the effect of different leading blade positions on the hydraulic performance of the water inlet channel and the energy characteristics of the pump device. The results show that, after the leading blade is moved by 500 mm from the original design position to the direction of the impeller (at this time, the distance between the water outlet section and the water inlet channel is 0.064 5D), the efficiency of the pump device is increased by 1.28% compared with that of the original design condition, and the hydraulic loss of the water inlet channel is reduced obviously. The flow path loss is reduced, the velocity distribution of the water inlet channel section is improved, and the axial velocity distribution uniformity and the speed weighted average angle value of the water inlet channel water outlet section under different working conditions are obviously improved, and the suction flow state of the rotating wheel chamber is obviously improved. The influence of the position of the leading leaf blade on the water inlet channel and the pump device is not a simple linear relationship, and the distance between the blade position of the leading blade and the impeller is optimally matched.
【作者單位】： 江蘇大學(xué)國家水泵及系統(tǒng)工程技術(shù)研究中心;江蘇省灌溉總渠管理處;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(51109096) 江蘇高校優(yōu)勢學(xué)科建設(shè)工程項(xiàng)目
【分類號(hào)】：TV136.2

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