凸轮转子泵抽送非牛顿流体的特性分析  

Characteristics of Non-Newtonian Fluid Pumping in Cam-rotor Pump

作　　者：叶道星 戚安利 王中军 廖功磊 赖喜德 陈秋月 YE Daoxing;QI Anli;WANG Zhongjun;LIAO Gonglei;LAI Xide;CHEN Qiuyue(School of Energy and Power Engineering,Xihua University,Chengdu 610039 China;Chengdu Tianfu International Airport Branch of Sichuan Airport Group Co.,Chengdu 641419 China;Sichuan Machinery Research and Design Institute(Group)Co.,Ltd.,Chengdu 610063 China)

机构地区：[1]西华大学能源与动力工程学院,四川成都610039 [2]四川省机场集团有限公司成都天府国际机场分公司,四川成都641419 [3]四川省机械研究设计院(集团)有限公司,四川成都610063

出　　处：《西华大学学报（自然科学版）》2023年第4期8-15,31,共9页Journal of Xihua University:Natural Science Edition

基　　金：四川省教育厅项目“双一流学科建设”(RC1900009750);四川省科技厅资助项目(2022YFN0026);德阳市开放式校市合作技术研发资助项目(2018CKJ020)。

摘　　要：为研究非牛顿流体在凸轮转子泵内的流动状态,以三叶摆线型凸轮转子泵作为研究对象,选取猪粪作为抽送介质,采用数值模拟的方法计算抽送不同气相和固体颗粒的猪粪时凸轮转子泵的内部流动。结果表明:气泡直径、固相浓度和颗粒直径对凸轮转子泵的性能影响较小,而表观黏度和幂律指数对其性能的影响较大;随着幂律指数的增大,流量脉动系数增大,一定程度降低凸轮转子泵的运行稳定性;随着表观黏度的增大,平均流量和容积效率逐渐变大,而脉动系数逐渐减小,一定程度增加凸轮转子泵的运行稳定性。本文的研究结果为凸轮转子泵输送非牛顿流体时的优化设计提供了参考。In order to study the flow state of non-Newtonian fluid in lobe pump,three-bladed cycloid lobe pump was selected as the research object,and the internal flow of the lobe pump under pig manure with different gas phases and solid particles was calculated by numerical simulation.The results of the analysis show that:bubble diameter,solid phase concentration and particle diameter have little influence on the pump performance,while the apparent viscosity and power law index have a greater influence on its performance.Among them,with the increase of the power law index,the flow pulsation coefficient is increased,so the operating stability of rotary lobe pump will be reduced to a certain extent.With the increase of apparent viscosity,the average flow rate and volumetric efficiency gradually increase,and the pulsation coefficient gradually decreases,which will increase the operating stability of rotary lobe pump to a certain extent.The results of the study laid the foundation for the optimized design of rotary lobe pump when delivering non-Newtonian fluid.

关 键 词：凸轮转子泵 表观黏度 气相 固相 非牛顿流体 数值模拟 

分 类 号：TH326[机械工程—机械制造及自动化]