摘要
为明确压气机喘振的发生机理,采用动态压力传感器对1台涡轮增压器用无叶扩压器离心压气机进行了喘振试验。试验结果表明,喘振的频率不仅与排气管路容积有关,还与转速有关,且喘振的频率随转速的升高而降低;进入喘振的流量随着管路容积的增大而增大,并与转速基本呈线性增长关系;管路容积大的系统其退出喘振的流量明显高于进入喘振的流量。
In order to clarify the surge mechanism, the experiment was carried out on the vaneless diffuser centrifugal corn pressor that was used by turbocharger. The experiment results indicate that the surge frequency is related to not only the vol ume of discharge pipeline but also the rotating speed of compressor. The surge frequency is reduced with the increase of rotating speed. The critical mass flow is increased with the increase of discharge pipeline volume and has linear increasing relation with rotating speed. For the system with larger pipeline volume, the mass flow of exiting surge area is noticeably higher than that of entering surge area.
出处
《车用发动机》
北大核心
2008年第6期77-79,84,共4页
Vehicle Engine
关键词
离心压气机
喘振频率
喘振流量
centrifugal compressor
surge frequency
surge flow
