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发布时间：2018-03-13 20:08

本文选题：摆线转子泵　切入点：参数优化　出处：《重庆大学》2012年硕士论文　论文类型：学位论文

【摘要】：内啮合圆弧-摆线转子泵（简称摆线转子泵）因具备结构紧凑、运转平稳、脉动小以及容积效率高等诸多优点而广泛应用于车辆、船舶装备的润滑系统中。目前国内摆线转子泵的产品开发多采用仿制或类比设计方法，缺乏一整套完整的设计方法和开发流程来指导产品研发。国内外学者多侧重于摆线转子泵的理论研究，忽略了研究成果的工程实用性，因此在如何提高设计理论对工程实践的指导意义方面还有很多工作要做。针对上述问题，运用理论推导和仿真分析的方法对摆线转子泵的设计理论和方法进行研究，并通过实验方式对仿真分析的正确性进行验证。从产品设计的角度出发，将摆线转子泵的关键部件——内、外转子的设计建模过程软件化，并在设计中充分考虑摆线转子泵使用厂家最为关注的结构参数、技术性能等要求，以保证研究成果的工程实用价值。引入动态干涉检测方法和数字化样机技术，尽可能将设计过程数字化，以便在设计阶段就发现并排除各种设计缺陷和错误，保证产品设计的一次性成功率；同时，为了缩短产品研发周期，寻找一种可行的流场仿真分析方案，以便在设计阶段就能预估流场特性，从而验证设计方案的正确性与合理性。结合啮合原理、微分几何、流体力学等理论，分析摆线转子泵的工作原理和内、外转子齿廓的成型机理，并运用流体力学理论建立泵腔流场动力学模型，对摆线转子泵的流场特性进行仿真分析，本文主要的研究内容如下： ①基于包络啮合理论推导内转子廓形方程，并研究短幅外摆线齿廓曲率半径对其廓形的影响，探讨避免内转子齿形产生顶切的约束方法；根据摆线转子泵几何特性，采用优化分析的方法去获取创成系数和弧径系数的最佳值，并对原有产品方案进行优化设计。 ②分析进、排油腔结构对摆线转子泵容积效率的影响，研究其改进方式，，旨在开发一种能最大程度地利用进油惯性的新型油槽封油曲线，以利于提高摆线转子泵的容积效率。 ③基于可视化编程软件Visual Basic对Solidworks三维建模软件进行二次开发，将摆线泵内、外转子设计过程程序化，并运用虚拟装配和干涉分析技术验证内、外转子设计的正确性，为产品高效设计提供条件。 ④基于Fluent流体仿真分析软件，引入动网格技术和动边界自定义函数，结合RNG k-ε湍流模型对摆线转子泵三维流道模型进行流体动力学分析，探讨动网格技术应用中关键参数的设置方法与规律，旨在为摆线转子泵新产品研发过程所需的流场特性预估提供可行的实施方案；同时，采用实验测试的方式验证仿真分析的正确性，并分析设计方案是否能够满足产品的技术性能要求。
[Abstract]:The inner meshing circular arc cycloidal rotor pump (abbreviated as cycloidal rotor pump) is widely used in vehicles because of its advantages of compact structure, stable operation, small pulsation and high volume efficiency. In the lubricating system of ship equipment. At present, the product development of cycloidal rotor pump in our country mostly adopts the method of imitation or analogy design. Lack of a complete set of design methods and development process to guide product development. Scholars at home and abroad focus on the theoretical research of cycloidal rotor pump, ignoring the engineering practicability of the research results. Therefore, there is still a lot of work to be done on how to improve the guiding significance of design theory to engineering practice. Aiming at the above problems, the design theory and method of cycloidal rotor pump are studied by theoretical derivation and simulation analysis, and the correctness of simulation analysis is verified by experiment. The design and modeling process of cycloidal rotor pump, which is the key component of cycloidal rotor pump, is software, and the structural parameters and technical performance of cycloidal rotor pump are fully considered in the design. In order to ensure the engineering practical value of the research results, the dynamic interference detection method and the digital prototype technology are introduced to digitize the design process as far as possible in order to find and eliminate all kinds of design defects and errors in the design stage. At the same time, in order to shorten the product R & D cycle, a feasible flow field simulation analysis scheme can be found in order to predict the flow field characteristics in the design stage and verify the correctness and reasonableness of the design scheme. Combined with the theory of meshing, differential geometry and hydrodynamics, the working principle of cycloidal rotor pump and the forming mechanism of tooth profile of inner and outer rotor are analyzed, and the hydrodynamic model of pump cavity flow field is established by using the theory of hydrodynamics. The flow field characteristics of cycloidal rotor pump are simulated and analyzed. The main contents of this paper are as follows:. 1 based on the envelope meshing theory, the internal rotor profile equation is derived, and the influence of the short amplitude cycloid tooth profile curvature radius on its profile is studied, and the constraint method to avoid the top tangent of the inner rotor tooth profile is discussed, according to the geometric characteristics of the cycloid rotor pump, The optimal value of the generation coefficient and arc diameter coefficient was obtained by the method of optimization analysis, and the original product scheme was optimized. (2) analyzing the influence of the structure of oil inlet and drain chamber on the volumetric efficiency of cycloidal rotor pump, and studying its improvement mode, in order to develop a new type of oil groove oil sealing curve which can make maximum use of the inertia of oil intake, so as to improve the volumetric efficiency of cycloidal rotor pump. Based on the visual programming software Visual Basic, the 3D modeling software of Solidworks is redeveloped, the design process of inner and outer rotor of cycloid pump is programmed, and the correctness of the design of inner and outer rotor is verified by virtual assembly and interference analysis technology. To provide conditions for efficient product design. (4) based on the software of Fluent fluid simulation and analysis, the dynamic grid technology and the self-defined function of moving boundary are introduced, and the three-dimensional flow channel model of cycloidal rotor pump is analyzed with RNG k- 蔚 turbulence model. This paper discusses the setting methods and rules of key parameters in the application of dynamic grid technology in order to provide a feasible scheme for predicting the flow field characteristics of the new product of cycloidal rotor pump, and at the same time, The correctness of the simulation analysis is verified by experimental test, and whether the design scheme can meet the technical performance requirements of the product is analyzed.
【学位授予单位】：重庆大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH38

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