不同口环密封结构对转子动力学特性的影响  

Effects of different ring seal structures on rotor dynamic characteristics

作　　者：李小兵 郭荣 王晓娜 程效锐 王晓全 LI Xiaobing;GUO Rong;WANG Xiaona;CHENG Xiaorui;WANG Xiaoquan(College of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou 730050,China;National Local Joint Engineering Fluid Laboratory of Fluid Transmission System Technology,Zhejiang University of Technology,Hangzhou 310018,China;AVIC Chengdu Caic Electronics Co.,Ltd.,Chengdu 610091,China)

机构地区：[1]兰州理工大学能源与动力工程学院,兰州730050 [2]浙江理工大学流体传输系统技术国家地方联合工程流体实验室,杭州310018 [3]航空工业成都凯天电子股份有限公司,成都610091

出　　处：《流体机械》2023年第1期57-63,共7页Fluid Machinery

基　　金：国家自然科学基金项目(51469013);甘肃省自然科学基金项目(20JR10RA172)。

摘　　要：为了研究不同形式密封结构对高速离心泵密封动力学特性的影响,通过数值计算的方法对环形密封、迷宫密封、轴向槽型密封3种不同形式的密封结构在相同边界条件下的泄漏量、刚度阻尼特性和密封内流特性等方面进行了研究。研究结果表明:迷宫密封的密封效果最好,环形密封次之,轴向槽型密封最差;轴向槽型密封的泄漏量比迷宫密封高出34%。然而,轴向槽型密封的主刚度系数和主阻尼系数较迷宫密封高出1倍以上,密封动力学特性最好;且轴向槽型密封可以减弱密封内部环流,减弱进口预旋速度。In order to study the influence of different seal structures on the sealing dynamic characteristics of high-speed centrifugal pump,the leakage,stiffness damping characteristics and seal internal flow characteristics of three different seal structures annular seal,labyrinth seal and axial groove seal,under the same boundary conditions were studied.The research results show that the labyrinth seal has the best sealing effect,the annular seal is the second,and the axial groove seal is the worst,and its leakage is 34%higher than the labyrinth seal.However,the main stiffness coefficient and main damping coefficient of axial groove seal are more than twice that of labyrinth seal,and its dynamic characteristics are the best;and the axial groove seal can weaken the internal circulation of the seal and the inlet pre-rotation speed.

关 键 词：密封动力学特性 口环密封 迷宫密封 轴向槽型密封 密封泄漏量 刚度阻尼特性 

分 类 号：TH117.2[机械工程—机械设计及理论]