涡旋压缩机齿端面密封条的力载荷分布规律的研究  

Study on Load Distribution of the Scroll Compressor Teeth Seal

作　　者：吴开波[1] 李海生[1] 陈英华[1] 张小卫[1] 王建松[1] 

机构地区：[1]中国矿业大学,江苏徐州221116

出　　处：《流体机械》2014年第11期38-42,12,共6页Fluid Machinery

基　　金：国家自然科学青年基金项目(51105362)

摘　　要：通过涡旋齿端面槽内安装密封机构,可以有效降低涡旋齿端面轴向间隙的泄漏。根据密封机构的工作原理,对涡旋齿内密封条进行了受力分析,详细阐述了重力和压差力载荷计算的理论依据,进一步深入研究了密封条所受力载荷的大小及分布规律。计算结果表明,压差力是密封条的最重要力载荷,是保证齿端面密封的关键作用力;沿渐开线展开角方向呈现间断式分布规律,气体压缩过程中压差力逐渐增大,使轴向间隙减小而不易产生泄漏,吸气、排气过程压差力逐渐降低,使轴向间隙增加而易产生泄漏,这将为密封机构的设计与计算提供了理论依据。A sealing mechanism inside the scroll teeth can reduce the seal of axial clearance effectively.The force of seal element is analysed according to the working principle of sealing mechanism.The calculational process of the gravity and differential pressure force is stated detailedly.Further more,the value and distribution regularites of loading are discussed in depth.The results show that the differential pressure force is the most important one for the seal element and also the pivotal force in order to insure the sealing of scroll teeth.The distribution regularites is discontinuous along the involute angles.During the process of gas compression,the axial clearance and leakage decrease because the differential pressure force increases gradually.But it is opposite to that of the inhale and exhaust process.These will provide a theoretical basis for the design and calculation of sealing mechanism.

关 键 词：涡旋压缩机 密封条 载荷 分布规律 

分 类 号：TH45[机械工程—机械制造及自动化]