平动活塞式空气压缩机的理论和仿真分析

发布时间：2018-03-31 15:07

本文选题：空气压缩机　切入点：平动活塞　出处：《广西大学》2011年硕士论文

【摘要】：小型空气压缩机是人们生产生活中经常用到的工具之一,而旋转式的空气压缩机因其具有体积小、重量轻以及动平衡性能优越等优点在小型空压机领域得到广泛应用。但是,传统旋转式空压机长期存在摩擦磨损严重和泄漏大的弊端,归根到底,产生的主要原因在于运动副之间的较大相对速度和接触力。论文介绍的平动活塞式空气压缩机,其思路是将涡旋压缩机的平动思想借用到传统滚动活塞式压缩机中,使压缩机的活塞从旋转运动变成平动运动,由此改变了传统滚动活塞式压缩机的工作方式。这样不仅大幅度降低了滑片与气缸之间、活塞与气缸之间的相对运动速度,而且减小了滑片同活塞之间的接触力,以及缩短了滑片相对于气缸的滑移路程。此外,新型平动活塞式空气压缩机还改变了传统滚动活塞式压缩机中滑片的形状,将滑片与活塞之间的线接触变成密封效果更好的面接触,达到了降低泄漏的目的。论文的主要工作可以归纳为以下几个方面： 1)给出了新型平动活塞式空气压缩机的设计要点,并讨论了平动装置的设计选择；推导出工作的任意时刻压缩机吸气腔、排气腔的工作容积和压缩腔气体的压力变化,并建立了滑片和活塞的运动学模型,从理论上得到了滑片与活塞的运动学参数； 2)借助ADAMS软件对平动活塞式空气压缩机进行了运动学和动力学分析,从滑片和活塞接触力的方面,比较了平动活塞式空气压缩机的优越性,证实了其存在优势的原因； 3)利用ANSYS软件对整个平动活塞式空气压缩机模型进行结构静力学分析,获得压缩机零部件的应力云图,为压缩机的设计改进提供指导；最后通过试验比较证明了平动活塞式空压机在工作原理上确实可行,且在性能上具有优越性。
[Abstract]:The small air compressor is one of the most frequently used tools in people ' s life , and the rotary air compressor has been widely used in the field of small air compressor because it has the advantages of small size , light weight and excellent dynamic balance performance . However , the traditional rotary air compressor has the disadvantages of severe friction and abrasion and large leakage .

The invention relates to a translational piston type air compressor , which is characterized in that a translational idea of a scroll compressor is borrowed into a traditional rolling piston compressor , so that the piston of the compressor changes from a rotary motion to a translational movement , thereby changing the working mode of the traditional rolling piston compressor .

The main work of the thesis can be summarized as follows :

1 ) The design points of the novel translational piston air compressor are given , and the design choice of the translational device is discussed .
The working volume of the compressor and the pressure change of the compression chamber gas are deduced . The kinematic model of the sliding vane and the piston is established , and the kinematic parameters of the sliding vane and the piston are obtained theoretically .

2 ) Based on ADAMS software , the kinematics and dynamics of the translational piston air compressor are analyzed , the advantages of the translational piston air compressor are compared from the aspects of the contact force of the sliding vane and the piston , and the reasons for its advantages are confirmed .

3 ) using ANSYS software to analyze the structural statics of the whole translational piston air compressor model to obtain the stress cloud chart of the compressor components , and provide guidance for the design improvement of the compressor ;
At last , it is proved that the translational piston air compressor is feasible in the working principle and has the superiority in performance .

【学位授予单位】：广西大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH455

【引证文献】