【作者】 黄将兴；

【导师】 陈兵奎；

【作者基本信息】 重庆大学 ， 机械设计及理论， 2010， 硕士

【摘要】 泵是输送液体或使液体增压的机械,它将原动机的机械能或其他外部能量传送给液体,使液体能量增加。液压泵是整个液压系统的能源装置,液压泵性能的好坏直接决定着整个液压系统性能的好坏。摆线内啮合齿轮泵简称摆线泵,它是一种容积式泵,它与渐开线外啮合齿轮泵相比,具有结构紧凑,零件少,噪声低,流量脉动小,自吸性能好,适于高转速等优点。本文应用微分几何和齿轮啮合原理,对二次包络新型摆线泵展开理论和仿真研究,对于揭示其啮合传动的实质、提高泵的性能等具有重要的理论意义和工程实用价值。本文的主要内容包括:①简要介绍了摆线泵的齿廓曲线和二次包络摆线泵齿廓的形成方法,给出了齿廓曲线方程,讨论了二次包络摆线泵的优点,分析了二次包络摆线泵齿廓的顶切问题。②研究了二次包络摆线泵的工作原理以及基本参数和结构尺寸,完成了二次包络摆线泵样机设计。③简述了流体力学的基本理论和CDF软件Fluent,重点介绍在分析二次包络摆线泵内流场用到的动网格理论,以及和动网格理论有关的UDF相关基础理论。④分别建立一次和二次包络摆线泵的流道模型并划分网格,通过Fluent对摆线泵的泵内流场进行仿真,给出了仿真结果,并进行对比分析。更多还原

【Abstract】 Pump is conveying a liquid or liquid mechanical supercharger. It will prime mover of the mechanical energy or other external energy transmitted to the liquid, so that the liquid energy increases. Hydraulic pump is the energy unite of the whole hydraulic system, the performance of the whole hydraulic system is directly determined by the performance of the hydraulic pump.Internal cycloidal gear pump, cycloidal pump for short, is a type of volumetric pump, compared with the external involute gear pump, it has the characteristics of compact structure, less number of part, low noise, low flux pulse, good suction ability and suitability for high rotational speed. By using differential geometry and principle of gear connection, research on related theory and simulation of a new double-enveloping cycloidal pump is carried out in this paper, which has important theoretical meaning and engineering practical value for showing the essence of this gear transmission and improving the performance of the pump.The main contents of this paper include :①The design idea of the double-enveloping cycloidal pump as well as the tooth profile generation theory and the curve function is provided in this paper, and the advantages of the double-enveloping cycloidal pump and the influence on the tooth profile of the inter rotor curvature radius are also discussed, afterwards, further study is carried out on the cropped double-enveloping cycloidal pump.②the principle of the double-enveloping cycloidal pump and the corresponding structural parameters is investigated in this paper, and the part drawing or assembly drawing of the double-enveloping cycloidal pump are also provided ultimately.③This paper also introduces the basic theory of fluid mechanics and the CFD software FLUENT, the dynamic mesh theory in the flow field inside of the double-enveloping cycloidal pump is mainly introduced, It involves the relevant basic knowledge of UDF.④after established the channel model and mesh of the double-enveloping cycloidal pump, the simulation of the flow field inside of the double-enveloping cycloidal pump is carried out in the environment of FLUENT.更多还原