诱导轮间隙对高原离心泵效率及扬程的模拟研究  

Simulation study on the efficiency and head of high-altitude centrifugal pump with inducer clearance

作　　者：郭傲辉 吉华 白军[1] 姜梅[1] 王威 Guo Aohui;Ji Hua;Bai Jun;Jiang Mei;Wang Wei(College of Water Conservancy and Civil Engineering,Tibet Agriculture and Animal Husbandry University,Nyingchi 860000,China)

机构地区：[1]西藏农牧学院水利与土木工程学院,林芝860000

出　　处：《西藏科技》2024年第7期66-73,共8页Xizang Science And Technology

基　　金：西藏自治区大学生创新性实验计划(S202410693027)。

摘　　要：为解决藏区某型离心泵空蚀空化破坏问题,探索不同诱导轮叶端间隙对离心泵效率及扬程的影响情况,基于Mixture多相湍流模型,选取了7个具有代表性的离心泵工况,对离心泵进行全流道三维定常计算。数值模拟结果表明,诱导轮间隙为L2取值2cm时,离心泵整体流道压力和最低压力得到了有效提升,效率达到最高,扬程也满足了设计要求,在保障离心泵整体抗气蚀性能的同时,也保证了离心泵整体结构的紧凑性。In order to solve the problem of cavitation erosion and failure of a certain type of centrifugal pump in Xizang(Tibet),and to explore the influence of different inducer blade end clearances on the efficiency and head of the centrifugal pumps,this study selected 7 representative centrifugal pump working conditions based on the Mixture multiphase turbulence model,and carried out the three-dimensional constant calculation of the whole flow channel of the centrifugal pumps.The numerical simulation results show that when the inducer clearance is L2 and the value is 2cm,the overall flow channel pressure and the minimum pressure of the centrifugal pump are effectively improved,the efficiency reaches the highest,and the head also meets the design requirements,which not only ensures the overall anti-cavitation performance of the centrifugal pump,but also ensures the compactness of the overall structure of the centrifugal pump.

关 键 词：水泵水轮机 短叶片 能量特性 流动特性 

分 类 号：TH311[机械工程—机械制造及自动化]