| 电驱动离心压气机叶型分析及设计 |
| |
| 引用本文： | 张虹,陈意,王卓.电驱动离心压气机叶型分析及设计[J].北京理工大学学报,2021,41(3):258-265. |
| |
| 作者姓名： | 张虹 陈意 王卓 |
| |
| 作者单位： | 北京理工大学机械车辆学院,北京100081 |
| |
| 摘 要： | 通过分析基于电机驱动压气机的性能要求和工作特点，得到可运行于低转速范围下的高效电动压气机叶轮设计策略.对比普通车用涡轮增压离心压气机叶轮J90和电动压气机叶轮JE90以及分析两种不同应用场合的叶轮的子午流道外形、叶片角分布和叶片载荷分布等存在的差异，得到低比转速电动压气机叶轮叶型的几何设计规律和策略.结果表明:优化子午流道外形可以改善流动情况，减小二次流损失；分流叶片后掠可以增大失速裕度和稳定工作裕度，叶轮尾部叶片角分布中可以选择较小的出口叶片角以提高其做功能力，加大吸力面和压力面的载荷差距，即压差更大可增强对空气做功能力；主叶片厚度最大值不宜过大且保证在中间跨度的厚度分布均匀.
|
| 关 键 词： | 低比转速 电动压气机 叶型 |
| 收稿时间： | 2020/2/18 0:00:00 |
Analysis on Blade Characteristics of Low Specific Speed Electric-Compressors |
| |
| ZHANG Hong,CHEN Yi,WANG Zhuo.Analysis on Blade Characteristics of Low Specific Speed Electric-Compressors[J].Journal of Beijing Institute of Technology(Natural Science Edition),2021,41(3):258-265. |
| |
| Authors: | ZHANG Hong CHEN Yi WANG Zhuo |
| |
| Affiliation: | School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China |
| |
| Abstract: | In this paper, the performance requirements and design characteristics of the electric-compressor were analyzed to conceive a conceptual design for the blade of electric-compressor, running with low specific speed and high efficiency. The performance of the centrifugal compressor impeller J90 used in the ordinary vehicle turbocharger and the compressor impeller JE90 used in the low specific speed were analyzed respectively. Comparing and analyzing the differences in the meridional channel, blade angle distribution and blade load distribution of the two impellers in different applications, the design geometry rule and strategy of the electric-compressor impeller were obtained. The research results show that, optimizing the shape of the meridional channel can improve the flow and reduce the secondary flow loss, the split blade with back-swept can increase the stall margin and the operation margin, choosing a smaller exit blade angle for distribution can improve pressure gap between the suction surface and the pressure surface to enhance the function for the air, the maximum of the main blade thickness should not be too large and the thickness distribution in the middle span should be uniform. |
| |
| Keywords: | low specific speed electric-compressor blade characteristics |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《北京理工大学学报》浏览原始摘要信息 |
|
点击此处可从《北京理工大学学报》下载全文 |
|
