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混輸泵半螺旋形吸入室不同含氣率的氣相分布
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    摘要:

    利用CFD模擬計算軟件，對軸流式油氣混輸泵半螺旋形吸入室在不同含氣率時的流場進行了模擬分析，得出了各含氣量時的氣相分布規(guī)律，分析了氣體積聚和旋渦形成的原因。根據(jù)分析結(jié)果，加大了吸入室從徑向轉(zhuǎn)向軸向時過渡區(qū)的斷面面積和圓弧半徑；增大了隔舌處的過渡圓弧，減小了出口端隔舌的厚度。樣機試驗表明，泵效率和含氣率均明顯提高，說明采取的措施是有效的。

    Abstract:

    Using CFD (computational fluid dynamics) software, the flow field of the axial flow gas-oil multiphase pump's semi-volute suction chamber in different void fractions has been simulated. The flow field velocity distribution was got and the reason for gas accumulation and vortex according to the gas distribution and slice graph were analyzed. The section area of axis and the roundness corner radian were augmented and the thickness of the outlet separator tongue was reduced in order to improve the performance of the pump. By testing the prototype pump, it showed that the pump efficiency and the void fraction were obviously advanced, which indicated the measures were effective.

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馬希金,秦霞,吳蓓.混輸泵半螺旋形吸入室不同含氣率的氣相分布[J].農(nóng)業(yè)機械學(xué)報,2007,38(4):77-80.[J]. Transactions of the Chinese Society for Agricultural Machinery,2007,38(4):77-80.

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