离心式压缩机在阻塞状态下的运行研究
Research on Operation of Centrifugal Compressors in Choke Conditions
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- 引用格式:
-
Rainer,Kurz,Russell,K,Marechale,Edward,J,Fowler,Mi.离心式压缩机在阻塞状态下的运行研究[J].天然气与石油,2017,35(1):0.doi:
Rainer Kurz, Russell K Marechale, Edward J Fowler, Min Ji, Michael J Cave.Research on Operation of Centrifugal Compressors in Choke Conditions[J].Natural Gas and Oil,2017,35(1):0.doi:
- DOI:
- 作者:
- Rainer Kurz Russell K Marechale Edward J Fowler Mi
Rainer Kurz, Russell K Marechale, Edward J Fowler, Min Ji, Michael J Cave
- 作者单位:
- 索拉透平公司
Solar Turbines Incorporated
- 关键词:
- 离心式压缩机；偏离设计工况的气动性能；轴向载荷；激振
Centrifugal compressor; Off-design aerodynamics; Axial thrust; Excitation
- 摘要:
- 离心式压缩机偶尔会有在阻塞区或其附近运行的情况。通过建立阻塞状态下所允许的各种操作极限,在测试数据和模拟数据的基础上对离心式压缩机在阻塞区的运行状态进行了研究。考虑到机芯性能、轴向载荷、蜗壳特性以及径向载荷的变化。讨论了叶轮叶片的激振问题。对多级压缩机和双段压缩机在流量明显高于设计流量运行时，叶轮不匹配所造成的影响给出了特别的建议。压缩机过载运行范围的限制不仅影响操作灵活性,还要求配备更复杂的控制系统。讨论了离心式压缩机在阻塞状态下运行的气动、结构以及转子动力学的问题,提出了离心式压缩机在阻塞区可使用和不可使用的基本特性。
Centrifugal compressors are at times required to operate in or near the choke region. Various limits of the degree of allowable operation in choke have been established. Based on test data and numerical data, the behavior of centrifugal compressors in the choke region is studied. Changes in aerodynamic performance, thrust load, volute behavior and radial loading are considered. The issue of excitation of impeller vanes is addressed. Particular consideration is given to multistage machines, as well as dual compartment machines, in particular regarding the effects of impeller mismatch during operating conditions at flows significantly higher than the design flow. Limitations in the overload operating range of a compressor not only impact the operational flexibility, but also can require more complicated control systems. The paper addresses aerodynamic, structural as well as rotor-dynamic issues related to the operation in choke. It indicate some general features of centrifugal compressor should be or not be operated in choke.
