两相流隔膜泵虚拟样机研究

发布时间：2018-03-12 12:36

本文选题：隔膜泵　切入点：有限元　出处：《东北大学》2011年硕士论文　论文类型：学位论文

【摘要】：固-液两相流隔膜泵属于往复泵的范畴(以下简称隔膜泵),其推进液的关键部件采用橡胶隔膜,因此与其它往复式泵相比较除有结构简单特点外还兼有耐磨、耐腐蚀等特点,是输送高磨蚀介质的新一代往复泵。隔膜泵是所在工艺系统的心脏设备,因此,对其性能的可靠性也有很高要求。现在隔膜泵在流量、压力、温度、耐磨蚀性等都得到不断发展,应用领域也越来越广泛,比如在有色、化工、建材、煤炭、电力等行业都得到广泛的应用。在实际生产中隔膜泵需要根据用户的使用工况条件来定制设计,但是不同型号和类型的隔膜泵许多零件形状是相近的。因此,将隔膜泵的设计系列化和模块化对提高设计效率降低成本具有重要的现实意义。虚拟样机技术在隔膜泵设计中不断应用有助于隔膜泵进一步发展。本文选择以额定流量为100m3/11,额定排出压力8MPa的三缸单作用泵作为设计对象进行研究。首先分析了双缸双作用和三缸单作用隔膜泵的运动机理,之后利用Pro/e软件完成对三缸单作用隔膜泵机械部分,包括动力端、液力端、拖动端的建模和装配,对三缸单作用隔膜泵动力端重要的传动部件如曲轴、连杆进行较为细致的受力和运动分析,并利用MATLAB软件绘出了相关的仿真曲线为ANSYS分析提供相关依据,利用ADAMS软件对三缸单作用泵动力端的数学模型进行了运动学和动力学仿真分析,对设计的物理模型进行校验和分析,为进一步研究提供依据。由于隔膜泵的一些关键零部件在实际工作过程中会发生疲劳破损或断裂等意外,而影响到正常的使用寿命。本文利用ANSYS软件对隔膜泵曲轴进行分析,为更真实反映曲轴实际工作中的受载情况,分析中考虑惯性力,并对载荷边界条件不进行简化处理最后提出改进措施。利用ANSYS软件隔膜泵的隔膜进行了非线性的分析,并完成了对隔膜的优化设计,为隔膜设计提供参考。
[Abstract]:The solid-liquid two-phase flow diaphragm pump belongs to the category of reciprocating pump (hereinafter referred to as diaphragm pump), the key component of its propulsion fluid is rubber diaphragm, so compared with other reciprocating pumps, it also has the characteristics of wear resistance and corrosion resistance in addition to its simple structure. The diaphragm pump is the heart equipment of the process system, so the reliability of its performance is also very high. Now the diaphragm pump is in the flow rate, pressure, temperature, Wear and corrosion properties have been continuously developed and applied in more and more fields, such as non-ferrous, chemical, building materials, coal, Electric power and other industries are widely used. In actual production, diaphragm pumps need to be customized according to the user's operating conditions, but many parts of different models and types of diaphragm pumps are similar in shape. It is very important to serialize and modularize the design of diaphragm pump to improve the design efficiency and reduce the cost. The application of virtual prototyping technology in the design of diaphragm pump is helpful to the further development of diaphragm pump. In this paper, a three-cylinder single-acting pump with rated flow rate of 100m3 / 11 and rated discharge pressure of 8MPa is selected as the design object. Firstly, the motion mechanism of two-cylinder double-acting and three-cylinder single-acting diaphragm pump is analyzed. After that, Pro/e software is used to model and assemble the mechanical part of the three-cylinder single-acting diaphragm pump, including the power end, the hydraulic end and the driving end. The important driving parts of the three-cylinder single-acting diaphragm pump are the crankshaft, which are important to the driving end of the three-cylinder single-acting diaphragm pump. A detailed analysis of the force and motion of the connecting rod is carried out, and the relevant simulation curves are drawn by using the MATLAB software to provide the relevant basis for the ANSYS analysis. The kinematics and dynamics simulation analysis of the power end of the three-cylinder single-acting pump is carried out by using ADAMS software. The physical model is checked and analyzed, which provides the basis for further research. Because some key parts of the diaphragm pump may have accidents such as fatigue breakage or fracture in the actual working process, which affects the normal service life, this paper analyzes the crankshaft of the diaphragm pump by using ANSYS software. In order to reflect the actual working load of crankshaft more truly, the inertial force is considered in the analysis, and the improvement measures are put forward without simplifying the load boundary condition. The nonlinear analysis of the diaphragm of the diaphragm pump with ANSYS software is carried out. The optimal design of the diaphragm is completed, which provides a reference for the design of the diaphragm.
【学位授予单位】：东北大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH323

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