CAJ | 학술논문

采用 Fluent 软件，对径向柱面间隙密封－平衡盘（GS-BD）、径向迷宫密封－平衡盘（LS-BD）2种平衡装置的内部流场进行数值计算。对比分析了2种平衡装置内部流场的压力分布规律、平衡装置的平衡性能和泵的容积效率。结果表明：与 GS-BD 相比较，LS-BD 中平衡盘端面间的轴向间隙更小，泄漏率更小，泵的容积效率更高，在有轴向力波动的情况下，叶轮轴系可以更迅速地达到新的平衡状态。此外，进行了 LS-BD 平衡装置中迷宫密封参数优化分析，研究了迷宫径向间隙、密封腔深度、齿宽、齿数等结构参数对平衡性能的影响规律，得到了各参数的优选值。研究结果为多级离心泵平衡装置的优化设计提供了理论依据。
채용 Fluent 연건，대경향주면간극밀봉－평형반（GS-BD）、경향미궁밀봉－평형반（LS-BD）2충평형장치적내부류장진행수치계산。대비분석료2충평형장치내부류장적압력분포규률、평형장치적평형성능화빙적용적효솔。결과표명：여 GS-BD 상비교，LS-BD 중평형반단면간적축향간극경소，설루솔경소，빙적용적효솔경고，재유축향력파동적정황하，협륜축계가이경신속지체도신적평형상태。차외，진행료 LS-BD 평형장치중미궁밀봉삼수우화분석，연구료미궁경향간극、밀봉강심도、치관、치수등결구삼수대평형성능적영향규률，득도료각삼수적우선치。연구결과위다급리심빙평형장치적우화설계제공료이론의거。
Because the axial thrust problem has a significant effect on the reliability and efficiency of multistage pumps,it is es-sential to calculate axial thrust and the performance of thrust equalizing mechanism (TEM)precisely.In this paper,The internal flow characteristics of gap seal-balancing disk(GS-BD)and labyrinth seal-balancing disk(LS-BD)were investigated employing the ANSYS-Fluent software.The pressure distribution and balancing performance as well as pump efficiency were studied.The result shows that,the gap between the impeller and the stationary plate is smaller in the LS-BD,which can reduce the leakage through TEMand increase the efficiency of the pump.Under the condition of axial thrust fluctuation,the impeller system can reach new equilibrium state faster in the LS-BD,which can improve the reliability of the pump.In addition,the structure param-eter of labyrinth seal was optimized by studying the influence of radial clearance,cavity depth,tooth thickness,number of cavi-ties on the LS-BD balance performance respectively.These results provide the basis theory guide for the optimization of TEM.