往复活塞式单泵头空压机噪音检测及分析

Noise detection and analysis of reciprocating piston single pump head air compressor

针对已安装空滤器往复活塞式单泵头空压机工作时存在振动大、噪声大的问题,该研究采用半消音室通过声压法检测0,60,90,135 psi 4种不同工况下的噪声,其中0 psi为非稳态,检测需迅速准确,其他3种均需确定噪声试验状况稳定后测量。通过多通道噪声振动测量分析系统HS5660B-X对已获得的噪声时域数据进行傅里叶变换转换为频域数据,通过1/3倍频程分析得到A计权下的10个通道的声压级、平均声压级、声功率级。分析实验结果可知:主要噪声源频率为800,630,1000,2000,1600 Hz。此类空压机所产生的噪音呈现中频为主,高频为辅的特点,最重要的噪声源频率为800 Hz。该结果可为解决噪声问题提供理论基础。

Considering that there are large vibration and high noises in the operation of reciprocating piston single pump head air compressor with air filter installed,the working noise of the semi-muffler chamber is detected amid 4 different operating conditions by the sound pressure method.Among four operating conditions of 0,60,90,135 psi,special attention should be payed to 0 psi which is unsteady.The detection should to be rapid and accurate.The other 3 operating conditions need to be measured after the noise test condition being stable.The multi-channel noise vibration measurement and analysis system HS5660B-X was used to transform the obtained noise time domain data into frequency domain data with Fourier transform.The A-weighting 10 channels results were obtained such as sound pressure level,average sound level and sound power level with 1/3 octave analysis.The main noise source frequency are 800 Hz,630 Hz,1000 Hz,2000 Hz and 1600 Hz with analysis experiment result.The air compressors noise is mainly characterized by intermediate frequency and high frequency,and the most important noise source frequency is 800 Hz.It provides a theoretical basis to solve noise problems.