弹性转子油气混输泵的非线性动力学研究  

Study on nonlinear dynamics of an elastic rotor oil-gas mixed transport pump

作　　者：连加俤 吴鑫燚 黎义斌[2] 许静[3] 许生军 朱泽飞[3] LIAN Jiadi;WU Xinyi;LI Yibin;XU Jing;XU Shengjun;ZHU Zefei(College of Mechanical and Electrical Engineering,China Jiliang University,Hangzhou,Zhejiang 310018,China;College of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou,Gansu 730050,China;School of Mechanical Engineering,Hangzhou Dianzi University,Hangzhou,Zhejiang 310018,China)

机构地区：[1]中国计量大学机电工程学院,浙江杭州310018 [2]兰州理工大学能源与动力工程学院,甘肃兰州730050 [3]杭州电子科技大学机械工程学院,浙江杭州310018

出　　处：《排灌机械工程学报》2023年第12期1203-1211,共9页Journal of Drainage and Irrigation Machinery Engineering

基　　金：浙江省基础公益研究计划项目(LTGS23E060002)。

摘　　要：为了研究弹性体转子外表面橡胶非线性变形对弹性体转子泵的影响,采用非线性单向流固耦合方法,建立转子啮合接触有限元模型,将非定常计算结果内流压力载荷施加到转子表面,研究圆弧转子型线和宽头刮边转子型线在不同的橡胶壁厚和出口压力下,对转子泵效率和启动扭矩的影响.结果表明,无论采用哪种型线,压差对橡胶剪应力和变形量影响较大,而转动角度对剪应力峰值影响较小;剪应力较大值主要出现在转子与衬套、转子与转子接触点附近靠高压区侧的圆弧区;壁厚与最大剪应力和橡胶变形呈正相关.设计的螺杆转子和得到的数据可用于弹性转子油气混输泵的设计和优化,延长弹性体转子油气混输泵在深海环境下的使用寿命,并大大节省了维护成本.In order to study the effect of nonlinear deformation of the rubber on the outer surface of an elastic rotor pump,a nonlinear unidirectional fluid-solid coupling method was used to establish a finite element model of rotor meshing contact.The unsteady calculation results of internal flow pressure load were applied to the rotor surface,and the effects of the arc rotor profile as well as the wide-head scra-ping rotor profile on the efficiency and starting torque of the rotor pump under different rubber wall thicknesses and outlet pressures were studied.The results show that regardless of the type of profile used,the pressure difference has a greater impact on the shear stress and deformation of the rubber,while the rotation angle has a smaller impact on the peak shear stress.The larger values of shear stress mainly occur in the arc area near the high-pressure area side which is close to the contact point between the rotor and the bushing,and between the rotor and the rotor.The wall thickness is positively correlated with the maximum shear stress and rubber deformation.The designed screw rotor and the obtained data can be used for the design and optimization of elastic rotor oil-gas mixed transport pumps,extending the service life of the elastic rotor oil-gas mixed transport pumps in deep-sea environments,which ultimately leads to huge savings in maintenance costs.

关 键 词：弹性转子油气混输泵 圆弧转子型线 宽头转子型线 非线性流固耦合 深海油气混输 

分 类 号：TE933[石油与天然气工程—石油机械设备]