通用低噪喷油螺杆空压机的噪声控制

Noise Control of a Standard,Silenced,Oil Injected,Screw Type,Air Compressor

封闭、空冷、螺杆压缩机机组的噪声源分为:气载噪声(如冷却风扇噪声)及源于压缩机排气压力脉动的结构衍生型噪声。在一个声学实验室内,对经过多种试验性改进的隔声机组上,进行了系统噪声试验和冷却空气吸入和排出系统等的试验,从此机组测得了70dB(A)的噪声值。

The sources of noise from an enclosed,air-cooled,screw compressor are distinguished as airborne,such as cooling fan noise,and structure generated resulting from the compressor delivery pressure pulses. Systematic noise testing of an enclosed plant with various modifications based on in-situ experimental work,and tests on cooling air intake and exhaust systems,etc,in an acoustic laboratory,a noise level of 70 dB(A) was obtained for the plant.