射流对不同封严篦齿特性的影响分析研究  

Study on Effect of Jet on Characteristics of Different Labyrinth Seal

作　　者：唐萌 赵晨旭 翟世杰 TANG Meng;ZHAO Chenxu;ZHAI Shijie(College of Energy and Power,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学能源与动力学院,江苏南京210016

出　　处：《机械制造与自动化》2022年第3期130-134,共5页Machine Building & Automation

摘　　要：对带射流口结构的压气机静子封严结构进行三维数值模拟,研究射流对不同封严篦齿齿顶间隙以及不同篦齿转速的影响。在此基础上从马赫数和涡量分布两方面分析射流对不同篦齿齿顶间隙内流动的影响。结果表明:随着齿顶间隙的增加,射流对其影响程度越大。篦齿转速>1000 r/min时,射流效率随着所测转速的增加而降低;篦齿转速>3000 r/min时,射流增量越大其射流效率越高。The three-dimensional numerical simulation of the compressor stator seal structure with jet port structure is carried out to study the effects of jet on the different tooth tip clearance and the different speed of labyrinth seal.On this basis,the influence of jet on the flow in the different gap between labyrinth seal is analyzed in terms of Mach number and vorticity distribution.The results show that the greater the tooth tip clearance is,the greater the influence of jet on it has.When the speed of the labyrinth seal exceeds over 1000 r/min,the jet efficiency decreases with the increase of the measured speed,while the speed of the labyrinth seal is greater than 3000 r/min,the jet increment becomes greater and the get efficiency is higher.

关 键 词：压气机 封严篦齿 齿顶间隙 特性分析 

分 类 号：TM451[电气工程—电器]