柴油机压气机进气消声器改进设计  

Improved design of intake silencers for compressors used in diesel engines

作　　者：温华兵[1] 桑晶晶[1] 刘红丹 陆必旺 

机构地区：[1]江苏科技大学能源与动力工程学院,江苏镇江212003 [2]重庆江增船舶重工有限公司,重庆402263

出　　处：《上海海事大学学报》2014年第4期75-78,共4页Journal of Shanghai Maritime University

基　　金：国家自然科学基金(11302088)

摘　　要：为提高柴油机压气机进气消声器的消声性能,推导径流式进气消声器声衰减量的经验公式.通过消声器的消音性能实验,表明采用Zellen消声系数的经验公式更适合于径流式进气消声器的声衰减量计算.分析材料吸声性能、吸声片间距、吸声片直径参数对消音性能的影响,提出消声器改进设计方案.改进后的消声器消声性能提高了9.6 d B.To improve the acoustic attenuation performance of intake silencers for compressors used in diesel engines, an empirical formula on acoustic attenuation of intake silencers of radial flow type is derived. Through an acoustic attenuation performance experiment of silencers, it is concluded that the empirical formula with Zellen acoustic attenuation coefficient is more appropriate to the calculation of the acoustic attenuation of intake silencers of radial flow type. The influence of the sound absorption performance of materials, the spans between sound absorption plates and the diameters of sound absorption plates on the acoustic attenuation performance is analyzed, and the improved design scheme is proposed. The acoustic attenuation performance of the improved silencer increases by 9.6 dB.

关 键 词：压气机 消声器 声衰减 经验公式 

分 类 号：U664.121[交通运输工程—船舶及航道工程]