三尖摆线泵性能分析及其定子型腔曲面加工方法的研究
发布时间：2018-10-19 14:53
【摘要】：摆线泵与其它类型的泵相比,具有以下优点:结构紧凑,体积小,吸油性能好,脉动率小等,且能在一些特殊工况和介质要求的条件下工作,使其广泛应用于各个工业行业中。但也存在一些缺点,内外转子结构较为复杂,加工精度要求较高,往往需要专门的制造装备进行加工生产,造价高,而国内加工生产摆线泵的水平较低,大多以引进外国产品为主,无法满足国内日益发展的需要。国内学者在研究摆线泵的过程中,提出了一款结构简单,原理新颖的摆线泵——三尖摆线泵,但对该泵的研究仅仅止于原理分析和数学建模阶段,还存在许多需要研究解决的问题。本文通过对摆线成形原理分析,建立了三尖摆线的数学模型。通过对三尖摆线的特性分析,验证了基于三尖摆线成形原理构建三尖摆线泵的可行性,并对该泵的工作原理、工作过程进行了研究分析,得出三尖摆线泵具有排量大,运动平稳等特点。本文研究的重点是分析三尖摆线泵几何参数变化对泵性能的影响。通过对三尖摆线型腔曲线的研究,借助MATLAB和Pro/E软件,推导出了三尖摆线泵排量的计算公式,确定了几何参数的选择范围,研究分析了几何参数对泵性能的影响并与普通摆线泵的几何排量进行了对比分析。根据推导的排量计算公式,分析计算了该泵的型腔变化规律和瞬态流量。接着,对三尖摆线泵运动,动力学特性进行理论分析与探讨,建立了三尖摆线泵的运动关系和传动机构,使用Pro/E对各零进行三维数字化建模、整体装配,并分析计算泵在选定参数下的性能。最后,依据三尖摆线泵的成形原理,完成三尖摆线泵定子型腔的建模,并依据模型研究分析了三尖摆线泵复杂型腔曲面的加工方法。通过计算分析与仿真模拟,可知三尖摆线泵具有以下优点:由于形成该泵的动圆直径始终与摆线相切,对三尖摆线及动圆直径进行等直径的圆包络后形成的泵容积效率高;同尺寸下,排量更大,脉动更小;易加工,耐磨损;泵的结构简单,易于密封等。所以三尖摆线泵具有一定的市场价值与应用前景。
[Abstract]:Compared with other types of pumps, cycloidal pumps have the following advantages: compact structure, small volume, good oil absorption performance, low pulsation rate, and can work under some special working conditions and medium requirements, making them widely used in various industrial industries. However, there are some disadvantages, such as complicated structure of inner and outer rotors, high machining precision, high cost and high cost of special manufacturing equipment, while the level of cycloid pump in domestic processing is low. Most of the introduction of foreign products, can not meet the growing needs of domestic development. In the course of studying cycloid pump, domestic scholars put forward a simple cycloidal pump with novel principle, three-pointed cycloid pump, but the research on this pump is only in the stage of principle analysis and mathematical modeling. There are still many problems to be solved. Based on the analysis of cycloid forming principle, the mathematical model of three-pointed cycloid is established in this paper. By analyzing the characteristics of the three-pointed cycloid, the feasibility of constructing the three-pointed cycloid pump based on the three-pointed cycloid forming principle is verified. The working principle and working process of the three-pointed cycloid pump are studied and analyzed, and the results show that the three-pointed cycloidal pump has a large displacement. A smooth motion, etc. The emphasis of this paper is to analyze the influence of geometric parameters on pump performance. Through the study of the curve of the three-pointed cycloid cavity, with the help of MATLAB and Pro/E software, the calculation formula of the displacement of the three-pointed cycloidal pump is derived, and the range of geometric parameters is determined. The effect of geometric parameters on pump performance is analyzed and compared with that of cycloid pump. According to the calculation formula of displacement, the variation law of cavity and transient flow rate of the pump are analyzed and calculated. Then, the kinematic and dynamic characteristics of the three-pointed cycloid pump are analyzed and discussed theoretically, and the kinematic relationship and transmission mechanism of the three-pointed cycloidal pump are established. The three-dimensional digital modeling of each zero is carried out by using Pro/E, and the whole assembly is carried out. The performance of the pump under the selected parameters is analyzed and calculated. Finally, according to the forming principle of three-tip cycloid pump, the modeling of stator cavity of three-tip cycloid pump is completed, and the machining method of complex cavity surface of three-pointed cycloid pump is analyzed according to the model. Through calculation, analysis and simulation, it can be seen that the three-pointed cycloidal pump has the following advantages: because the dynamic circle diameter of the pump is always tangent to the cycloid, the volume efficiency of the pump formed by the equal diameter circle envelope of the three-tip cycloid and the moving circle diameter is high; With the same size, larger displacement, less pulsation; easy processing, wear resistance, simple structure of pump, easy to seal, etc. Therefore, the three-point cycloid pump has a certain market value and application prospects.
【学位授予单位】：陕西理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TH38
本文编号：2281470
[Abstract]:Compared with other types of pumps, cycloidal pumps have the following advantages: compact structure, small volume, good oil absorption performance, low pulsation rate, and can work under some special working conditions and medium requirements, making them widely used in various industrial industries. However, there are some disadvantages, such as complicated structure of inner and outer rotors, high machining precision, high cost and high cost of special manufacturing equipment, while the level of cycloid pump in domestic processing is low. Most of the introduction of foreign products, can not meet the growing needs of domestic development. In the course of studying cycloid pump, domestic scholars put forward a simple cycloidal pump with novel principle, three-pointed cycloid pump, but the research on this pump is only in the stage of principle analysis and mathematical modeling. There are still many problems to be solved. Based on the analysis of cycloid forming principle, the mathematical model of three-pointed cycloid is established in this paper. By analyzing the characteristics of the three-pointed cycloid, the feasibility of constructing the three-pointed cycloid pump based on the three-pointed cycloid forming principle is verified. The working principle and working process of the three-pointed cycloid pump are studied and analyzed, and the results show that the three-pointed cycloidal pump has a large displacement. A smooth motion, etc. The emphasis of this paper is to analyze the influence of geometric parameters on pump performance. Through the study of the curve of the three-pointed cycloid cavity, with the help of MATLAB and Pro/E software, the calculation formula of the displacement of the three-pointed cycloidal pump is derived, and the range of geometric parameters is determined. The effect of geometric parameters on pump performance is analyzed and compared with that of cycloid pump. According to the calculation formula of displacement, the variation law of cavity and transient flow rate of the pump are analyzed and calculated. Then, the kinematic and dynamic characteristics of the three-pointed cycloid pump are analyzed and discussed theoretically, and the kinematic relationship and transmission mechanism of the three-pointed cycloidal pump are established. The three-dimensional digital modeling of each zero is carried out by using Pro/E, and the whole assembly is carried out. The performance of the pump under the selected parameters is analyzed and calculated. Finally, according to the forming principle of three-tip cycloid pump, the modeling of stator cavity of three-tip cycloid pump is completed, and the machining method of complex cavity surface of three-pointed cycloid pump is analyzed according to the model. Through calculation, analysis and simulation, it can be seen that the three-pointed cycloidal pump has the following advantages: because the dynamic circle diameter of the pump is always tangent to the cycloid, the volume efficiency of the pump formed by the equal diameter circle envelope of the three-tip cycloid and the moving circle diameter is high; With the same size, larger displacement, less pulsation; easy processing, wear resistance, simple structure of pump, easy to seal, etc. Therefore, the three-point cycloid pump has a certain market value and application prospects.
【学位授予单位】：陕西理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TH38
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