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多級離心泵葉輪級間泄漏對軸向力的影響?yīng)?/div>
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Interstage Leakage on the Axial Force of the Multistage Centrifugal Pump
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    摘要:

    理論分析了葉輪級間泄漏對葉輪前后蓋板外側(cè)腔體內(nèi)液體流動狀態(tài)的影響,，指出軸向力的實際大小與計算值之間存在著差異,。通過離心泵軸向力試驗裝置,，對液流速度分布和軸向力進行了試驗，研究結(jié)果表明：葉輪前后蓋板外側(cè)腔體內(nèi)液體并不是以葉輪0.5倍的角速度進行運轉(zhuǎn),，前蓋板外側(cè)大于0.5倍,，后蓋板外側(cè)小于0.5倍；葉輪兩側(cè)的壓力分布不一致,，前蓋板外側(cè)壓力小,，后蓋板外側(cè)壓力大,；軸向力計算值小于實際軸向力，應(yīng)對行業(yè)應(yīng)用的傳統(tǒng)軸向力計算公式進行修正,。

    Abstract:

    The influence of interstage leakage among impellers to the flow state outside the front and back shrouds of the multistage centrifugal pump was studied. The velocity distribution of inner flow and the value of axial force were measured by the experimental device of centrifugal pump. The results indicated that the rotation velocity of the liquid outside the front shroud was 0.5 times larger than the angular velocity of impellers, and the velocity outside the back shroud was 0.5 times less than the angular velocity. The pressure outside the front shroud was lower than the value outside the back shroud. The actual value of axial force was lower than the calculated. And the formula of the axial force should be modified. 

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牟介剛,李思,鄭水華,金建波,蘇苗印,趙永攀.多級離心泵葉輪級間泄漏對軸向力的影響?yīng)琜J].農(nóng)業(yè)機械學(xué)報,2010,41(7):40-44. Interstage Leakage on the Axial Force of the Multistage Centrifugal Pump[J]. Transactions of the Chinese Society for Agricultural Machinery,2010,41(7):40-44.

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