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扌罷 線泵與離心泵葉輪幾何設計之研究

Study on the Geometry Design of Cycloidal Pump and Centrifugal Impeller

作者:黃偉棋
畢業學校:正修科技大學
出版單位:正修科技大學
核准日期:2010-02-10
類型:Electronic Thesis or Dissertation
權限:Copyright information available at source archive--CSU University....

中文摘要

目前重型機車用油水泵之設計開發,相當仰賴逆向工程技術與過往經驗,並無完整的幾何設計理論作為基礎。本文之研究目的主要是對於油泵之內、外轉子以及水泵之葉輪幾何外形,進行幾何設計與電腦輔助工程分析,以探究轉子與葉輪之設計基礎理論及其流場特性。
首先本文應用共軛理論、微分幾何與座標轉換矩陣,推導扌罷 線轉子曲線數學模型,及其嚙合齒面接觸關係;並於CADCAM軟體建立扌罷 線轉子參數化模式,配合有限元素分析軟體,探討其齒面接觸應力,並於流場分析軟體進行模擬分析,並分析圓弧型線與翻u型線之特性差異。其次,應用逆向工程技術進行葉輪幾何重建,並藉由有限元素分析軟體及流場分析軟體,進行直線型與圓弧型葉輪的面壓與流量分析,探討流道及輸送面積對性能影響之差異性。
由本研究結果可發現扌罷 線轉子在所設定條件下流量較大,而其接觸應力也處於安全範圍。在葉輪部份,圓弧型葉輪在流量及受力變形之結果均優於直線型葉輪。

英文摘要

Research and development of the design and manufacturing technology on the oil/water pump of heavy motorcycle was established based on the reverse engineering and practical experience currently. In order to analyse the design concepts and hydrodynamic performance, the geometry design and computer-aided engineering for rotor and impeller of oil/water pump are studied in this thesis.
The design methods of the oil pump s rotors are established based on the conjugate theory, the differential geometry and the homogeneous coordinate transformation firstly. The flow field characteristic between the circular arc rotor and the cycloidal rotor are calculated by the CFD technique respectively. Then, the blade profile of impeller with linear curve is rebuild by the reverse engineering. The design parameters are retrieved and confirmed by the analysis of the obtained surface data. The impeller with circular arc is also modeled from the design parameters. The geometric model and the assembly of the oil/water pump components are constructed using the CAD/CAM software. In order to evaluate structure reliability and flow performance, the CAE software (ANSYS and CFdesign) are introduced in this research.
Through the comparisons in flow field simulation and structure analysis, the result show the cycloidal rotor of oil pump and impeller with circular arc of water pump have better performance.


口試委員 - 王進猷

口試委員 - 王心德

指導教授 - 李政男


 

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