CAJ | 학술논문

叶片泵在输送气液两相混合介质时，其扬程和效率与输送纯液体相比，有不同程度的降低，降低的程度与气泡群在叶轮内的滞留状况密切相关。现文推荐一种实用的泵导叶水力设计的选型方法。该方法将含气率α、增压Δp和气液混输泵综合性能指标λ作为选型的3个综合考虑依据，其原则是保证泵即使在高含气比下仍有较强的增压能力。按此方法对6组导叶设计方案进行了选型，最后综合评价增压单元内的叶轮和导叶，得到6组增压方案。
협편빙재수송기액량상혼합개질시，기양정화효솔여수송순액체상비，유불동정도적강저，강저적정도여기포군재협륜내적체류상황밀절상관。현문추천일충실용적빙도협수력설계적선형방법。해방법장함기솔α、증압Δp화기액혼수빙종합성능지표λ작위선형적3개종합고필의거，기원칙시보증빙즉사재고함기비하잉유교강적증압능력。안차방법대6조도협설계방안진행료선형，최후종합평개증압단원내적협륜화도협，득도6조증압방안。
While boosting gas-liquid two-phase fluids,a helico-axial pump is subjected to be degraded in performance including efficiency and head.The degradation is mainly due to the gather of gas inside pump.In order to increase limitation of gas delayed inside pump and the boosting potential of pump,an optimal design method has been developed based on the available analytical model for a gas-liquid two-phase pump in the present study.In this method,gas volume factor α，pressure gain Δp and the integrated index λ are recommended as major criteria of optimal hydraulic design of the diffuser of multiphase pumps.For the design of helico-axial booster-pump diffuser,as an example,it is convenient to select the best one among the designed rectifiers using the present optimal design method.