废油再生装备冷凝涡旋压缩机型线形状变化规律及仿真研究

发布时间：2018-07-20 20:17

【摘要】：能源问题是现今各个国家的主要问题之一。节约油资源也是当今社会主要考虑的问题之一。涡旋压缩机是一种新型的容器式压缩机,由于在性能与结构上的诸多优点,其应用领域越来越广泛,并在制冷与空调、泵送液体、增压气体等方面已获得工业化应用。涡旋式压缩机性能的决定因素是涡旋型线的设计理论,这也一直是各国学者研究的热点。本文首先对涡旋压缩机的几何理论进行研究。提出基于泛函的通用涡旋型线由几何共扼型线构成,根据平面曲线弧微分固有方程理论和Taylor级数思想,任意函数曲线的数学表达式都可以将其展开为切向角参数φ的级数的弧函数形式。并推演出基于泛函的通用涡旋型线的几何理论,平面共轭理论;在笛卡尔坐标下得出其坐标表征;并给出算例予以说明。对通用涡旋型线变化规律进行研究。以泛函的分析理论、级数思想为基础,利用基于泛函的通用涡旋型线的几何理论,以压缩比为目标函数,得出基于泛函的通用涡旋型线变化规律及收敛级数。知级数项k值大于3时为变壁厚的涡旋型线,公转半径Ror大盘直径D型线圈数N与k值是压缩比主要影响因素,建立收敛级数最佳的涡旋型线模型,利用基于MATLAB的遗传算法,优化出在给定条件下的最佳目标值,并给出最佳涡旋型线方程。以基于泛函通用涡旋型线构成的变壁厚涡旋盘为研究对象,建立了以能效比为目标函数的结构参数优化模型,分析了涡旋压缩机压缩过程中的由排气容积变化而引起的热能变化以及能效比变化。以能效比为目标函数、涡旋盘结构参数以及型线方程为变量,利用遗传算法得到能效比最优化时的变量,得出了形状性态良好的涡旋型线。对通用涡旋型线压缩机建模仿真及动涡盘进行有限元分析。研究了通用涡旋型线集成型线涡旋压缩机的运动仿真的建模基础,利用MATLAB软件得到了关于切向角参数系列点列,利用PRO/ENGINEER软件来生成动、静涡旋型线和动、静涡旋盘。根据涡旋压缩机运动结构,建立了通用涡旋型线集成型线涡旋压缩机的动态仿真模型。并对通用涡旋型线集成型线压缩机的动涡盘进行了有限元分析,得出了在运动状态及气体力作用下的受力情况。
[Abstract]:Energy problem is one of the main problems in every country nowadays. Saving oil resources is also one of the main problems to be considered in the society today. Scroll compressor is a new type of container compressor. Because of its many advantages in performance and structure, its application field is more and more extensive, and has been applied in refrigeration and air conditioning, pumping liquid, pressurized gas and so on. The design theory of vortex profile is the decisive factor of the performance of scroll compressor, which has always been a hot research topic of scholars all over the world. Firstly, the geometric theory of scroll compressor is studied in this paper. A general vortex line based on functional is proposed, which is composed of geometric conjugate lines. According to the theory of plane curve arc differential inherent equation and Taylor series thought, The mathematical expression of any function curve can be expanded into the arc function form of the series of tangential angle parameter 蠁. The geometric theory of the general vortex line based on functional, the plane conjugate theory, the representation of the coordinates in Cartesian coordinates are derived, and an example is given to illustrate this theory. The variation law of general vortex profile is studied. Based on the theory of functional analysis and the thought of series, using the geometric theory of the general vortex profile based on functional and taking the compression ratio as the objective function, the variation law and convergent series of the general vortex line based on functional are obtained. It is known that the series term k > 3 is a vortex line with variable wall thickness, and the number of D type coils N and k are the main factors affecting the compression ratio. The optimal vortex line model of convergent series is established, and the genetic algorithm based on MATLAB is used. The optimal target value under given conditions is optimized and the optimal vortex curve equation is given. A structural parameter optimization model with energy efficiency ratio (EER) as the objective function is established based on the variable wall thickness vortex disk based on functional general vortex profile. The change of heat energy and energy efficiency ratio caused by the change of exhaust volume in the compression process of scroll compressor is analyzed. With the energy efficiency ratio as the objective function, the vortex disk structure parameters and the shape line equation as the variables, the genetic algorithm is used to obtain the variables when the energy efficiency ratio is optimized, and the vortex curve with good shape is obtained. The modeling and simulation of the general scroll line compressor and the finite element analysis of the moving vortex disc are carried out. In this paper, the modeling foundation of general vortex line integrated line scroll compressor motion simulation is studied. A series of points about tangential angle parameters are obtained by using MATLAB software, and the moving and static vortex lines and moving and static vortex disks are generated by PRO/ ENGINEER software. According to the moving structure of scroll compressor, the dynamic simulation model of general vortex line integrated scroll compressor is established. The finite element analysis of the moving vortex disk of the general vortex line integrated line compressor is carried out, and the force situation under the action of the moving state and the gas force is obtained.
【学位授予单位】：重庆工商大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH45

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