한국기계기술학회지 제24권 제5호 (p.919-923)

대형기계의 소음감소에 대한 연구

A Study on the Noise Reduction of Large-Scale Machinery
키워드 :
Noise(소음),Large machine(대형기계),Noise management(소음관리),Steam stack noise(스팀 스택 소음),Duct noise(덕트 소음),Vibration compensator(진동보상장치)

초록

The main noise of a large machine can be divided into the noise generated during the work process and the noise of the equipment used in the work. The main noise in the noisy area is the air propagation sound caused by the operation of the rotating body. This is not fixed, but changes depending on the situation at the time of measurement. Workplaces exposed to noise can harm workers' health and cause related industrial disasters, resulting in many complaints and social problems, and eventually lead to a lot of damage in terms of productivity. Large machines that need noise reduction the most are motors, pumps, fans, blowers, and compressors. To reduce noise, mechanical structure or material changes are most effective. In this study, the noise reduction method and noise management method of large machines were investigated. To measure noise, the same method as ISO 3744 in Europe and JISA 8305 in Japan was used as KS A ISO 3744, KS A ISO 3746, which is a method of measuring the acoustic power level of machinery.