离心压缩机进口可调导叶尾缘自诱导吹气数值研究  

Numerical Investigation of Adjustable Inlet Guide Vane with Trailing Edge's Self-Induced Blowing in Compressors

作　　者：辛建池[1,2] 王晓放 周路圣[1,2] 杨树华 XIN Jian-chi;WANG Xiao-fang;ZHOU Lu-sheng;YANG Shu-hua(School of Energy and Power Engineering,Dalian University of Technology,Dalian 116024,China;Key Laboratory of Ocean Energy Utilization and Energy Conservation,Dalian University of Technology,Dalian 116024,China;Shenyang Blower Works Group Corporation,Shenyang 110000,China.)

机构地区：[1]大连理工大学能源与动力学院,辽宁大连116024 [2]大连理工大学海洋能源利用与节能教育部重点实验室,辽宁大连116024 [3]沈阳鼓风机集团股份有限公司,辽宁沈阳110000

出　　处：《东北大学学报（自然科学版）》2018年第7期1011-1016,共6页Journal of Northeastern University(Natural Science)

基　　金：国家重点研究发展计划项目(2016YFB0600104);辽宁重大装备制造协同创新中心资助项目

摘　　要：设计一种可进行尾缘自诱导吹气的可调导叶,减弱动静干涉效果,降低叶轮所受气动载荷,提高叶轮的安全性.该结构通过压差作用,调控导叶尾缘流动现象,补偿导叶的部分尾迹,并以某带有进口可调导叶的离心压缩机为例,采用数值方法予以验证.结果表明,在0°开度下结构内流动不明显.随着开度增加,壁面分离加大,在导叶的面上压差加大,使槽道内部自诱导流动加强.在较低增加叶根尾迹强度的条件下,改善了导叶中部、顶部尾迹分布形式,使纯尾迹减弱为弱尾迹,使叶轮气动载荷降低.同时无外部补气,自诱导结构对机组外特性几乎无影响.A self-induced structure was designed for the trailing edge of the guide vane of a centrifugal compressor to reduce the impact of rotor-stator interaction and the aerodynamic load on the following impeller,which improved the safety of the impeller. Through the effect of pressure differences,the structure of the trailing edge of the guide vane regulated the flow phenomenon and the partial wake of the guide vane was compensated. Based on the numerical simulation,a centrifugal compressor with adjustable inlet guide vane was used as an example. The results showed that the self-induced flow in the guide vane is not remarkable at the 0 degree guide vane angle. With the increase of the guide vane angle,the wall separation flow and the pressure differences on the guide vane are increased,and the internal self-induced flow is strengthened.With small increase of wake intensity near the root,the wakes distribution at the middle and top is improved,i. e. the pure wake reduces to a weak wake,which further decreases the aerodynamic load on the impeller. Meanwhile,without any injection air,the self-induced structure has little influence on the compressor performance.

关 键 词：离心压缩机 进口可调导叶 自诱导 气动载荷 数值模拟 

分 类 号：TH452[机械工程—机械制造及自动化]