| 带无叶扩压器离心压气机的稳定性分析 |
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| 引用本文： | 刘海清,高闯,张宏武,黄伟光.带无叶扩压器离心压气机的稳定性分析[J].动力工程,2013(12):936-941. |
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| 作者姓名： | 刘海清 高闯 张宏武 黄伟光 |
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| 作者单位： | [1]中国科学院工程热物理研究所,北京100190 [2]中国科学院大学,北京100190 [3]中国科学院上海高等研究院,上海201210 |
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| 基金项目： | 中国科学院重点方向资助项目 |
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| 摘 要： | 结合实验数据，采用数值模拟方法对某带无叶扩压器离心压气机的性能与稳定性进行了详细分析，比较了设计点与近失速点下无叶扩压器内部的流动特征．结果表明：在发生喘振瞬间，扩压器进口最先出现了压力崩溃；扩压器进口流动特别是轮盖侧流动是导致压气机失稳的重要因素，对扩压器进口逆叶轮旋转方向的轮盖侧啧蒸汽能够提高扩压器的稳定性．
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| 关 键 词： | 离心压气机 无叶扩压器 稳定性 喘振 |
Stability Analysis of Centrifugal Compressor with Vaneless Diffuser |
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| LIU Haiqing,GAO Chuang,ZHANG Hongzvu,HUANG Weiguang.Stability Analysis of Centrifugal Compressor with Vaneless Diffuser[J].Power Engineering,2013(12):936-941. |
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| Authors: | LIU Haiqing GAO Chuang ZHANG Hongzvu HUANG Weiguang |
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| Affiliation: | 1. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China 2. University of Chinese Academy of Sciences, Beijing 100190, China; 3. Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China) |
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| Abstract: | Performance and stability of a centrifugal compressor with vaneless diffuser were numerically an- alyzed in combination with experimental data, while flow characteristics inside the vaneless diffuser com- pared between design point and near stall point. Results show that collapse pressure first appears at diffus- er inlet in a moment when surge occurs; the inlet flow, especially the cover side flow of diffuser is the key factor that leads to instability of the compressor; backward steam injection at diffuser inlet can increase the operation stability of the diffuser. |
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| Keywords: | centrifugal compressor vaneless diffuser stability surge |
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