机械科学与技术2018，Vol.37Issue(1)：1-7,7.DOI:10.13433/j.cnki.1003-8728.2018.0101
小型柴油发电机组隔声罩结构优化设计研究
Design and Optimization of Noise Isolation Hoods for Small Diesel Generator Set
摘要
Abstract
Noise source identification and character analysis of a small diesel engine generator set is carried out by experimental ways.Based on the results,the structural optimization measures of sound insulation hood are put forward.For low frequency range,structure mass of noise insulation plate is confirmed to be the key influencing factor of transmission loss,and topological optimization is carried out.Transmission loss below 1 000 Hz is 13.16 dB (A).For middle-high frequency range spread through air vent of the enclosure,considering high-order sound wave propagated in air duct,baffle position and window width are the key factors influencing transmission loss,and optimized by genetic algorithm to suppress high-order sound wave.Transmission loss of air duct silencer is 30.3 dB(A).This method is verified by a test and sound pressure level of the generator set at a distance of 7 m is reduced to 60.7 dB(A).关键词
柴油发电机组/噪声控制/结构优化/遗传算法Key words
diesel generator set/noise control/structural optimization/genetic algorithm分类
资源环境引用本文复制引用
毕凤荣,杨晓,马腾..小型柴油发电机组隔声罩结构优化设计研究[J].机械科学与技术,2018,37(1):1-7,7.基金项目
国家科技支撑计划项目(2015BAF07B04)资助 （2015BAF07B04）
