本文選題：擺線轉(zhuǎn)子泵　切入點：參數(shù)優(yōu)化　出處：《重慶大學》2012年碩士論文　論文類型：學位論文

【摘要】：內(nèi)嚙合圓弧-擺線轉(zhuǎn)子泵（簡稱擺線轉(zhuǎn)子泵）因具備結構緊湊、運轉(zhuǎn)平穩(wěn)、脈動小以及容積效率高等諸多優(yōu)點而廣泛應用于車輛、船舶裝備的潤滑系統(tǒng)中。目前國內(nèi)擺線轉(zhuǎn)子泵的產(chǎn)品開發(fā)多采用仿制或類比設計方法，缺乏一整套完整的設計方法和開發(fā)流程來指導產(chǎn)品研發(fā)。國內(nèi)外學者多側重于擺線轉(zhuǎn)子泵的理論研究，忽略了研究成果的工程實用性，因此在如何提高設計理論對工程實踐的指導意義方面還有很多工作要做。 針對上述問題，運用理論推導和仿真分析的方法對擺線轉(zhuǎn)子泵的設計理論和方法進行研究，并通過實驗方式對仿真分析的正確性進行驗證。從產(chǎn)品設計的角度出發(fā)，將擺線轉(zhuǎn)子泵的關鍵部件——內(nèi)、外轉(zhuǎn)子的設計建模過程軟件化，并在設計中充分考慮擺線轉(zhuǎn)子泵使用廠家最為關注的結構參數(shù)、技術性能等要求，以保證研究成果的工程實用價值。引入動態(tài)干涉檢測方法和數(shù)字化樣機技術，盡可能將設計過程數(shù)字化，以便在設計階段就發(fā)現(xiàn)并排除各種設計缺陷和錯誤，保證產(chǎn)品設計的一次性成功率；同時，為了縮短產(chǎn)品研發(fā)周期，尋找一種可行的流場仿真分析方案，以便在設計階段就能預估流場特性，從而驗證設計方案的正確性與合理性。 結合嚙合原理、微分幾何、流體力學等理論，分析擺線轉(zhuǎn)子泵的工作原理和內(nèi)、外轉(zhuǎn)子齒廓的成型機理，并運用流體力學理論建立泵腔流場動力學模型，對擺線轉(zhuǎn)子泵的流場特性進行仿真分析，本文主要的研究內(nèi)容如下： ①基于包絡嚙合理論推導內(nèi)轉(zhuǎn)子廓形方程，并研究短幅外擺線齒廓曲率半徑對其廓形的影響，探討避免內(nèi)轉(zhuǎn)子齒形產(chǎn)生頂切的約束方法；根據(jù)擺線轉(zhuǎn)子泵幾何特性，采用優(yōu)化分析的方法去獲取創(chuàng)成系數(shù)和弧徑系數(shù)的最佳值，并對原有產(chǎn)品方案進行優(yōu)化設計。 ②分析進、排油腔結構對擺線轉(zhuǎn)子泵容積效率的影響，研究其改進方式，，旨在開發(fā)一種能最大程度地利用進油慣性的新型油槽封油曲線，以利于提高擺線轉(zhuǎn)子泵的容積效率。 ③基于可視化編程軟件Visual Basic對Solidworks三維建模軟件進行二次開發(fā)，將擺線泵內(nèi)、外轉(zhuǎn)子設計過程程序化，并運用虛擬裝配和干涉分析技術驗證內(nèi)、外轉(zhuǎn)子設計的正確性，為產(chǎn)品高效設計提供條件。 ④基于Fluent流體仿真分析軟件，引入動網(wǎng)格技術和動邊界自定義函數(shù)，結合RNG k-ε湍流模型對擺線轉(zhuǎn)子泵三維流道模型進行流體動力學分析，探討動網(wǎng)格技術應用中關鍵參數(shù)的設置方法與規(guī)律，旨在為擺線轉(zhuǎn)子泵新產(chǎn)品研發(fā)過程所需的流場特性預估提供可行的實施方案；同時，采用實驗測試的方式驗證仿真分析的正確性，并分析設計方案是否能夠滿足產(chǎn)品的技術性能要求。
[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.
【學位授予單位】：重慶大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：TH38

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