海洋工程船噪声测量分析与控制措施研究

本文通过选取85 m多用途海洋工程船在航行工况下,选取了在主机85%MCR、100%MCR下进行了船舶舱室噪声测量.总结海洋工程船在每种工况下的噪声分布特点、声压级强度、舱室是否超标、船员噪声暴露等级是否符合规范以及找出每种工况下造成舱室超标的具体频率范围及声源种类.最后,通过研究各种主要设备的降噪措施及控制技术的发展趋势,提出海洋工程船噪声控制由被动降噪转变为主动降噪的声学设计理念.

Research on Noise Analysis and Control Measures of Ocean Engineering Ship

In recent years,with the rapid development of the offshore support vessel in function and species,its structure is becoming more complex and the noise problems are more serious.However,no one has done a comprehensive research on the status of the offshore support vessel's niose field.In view of this,the cabin noise of 85 m multi-purpose ocean engineering ship is measured under 85%MCR and 100%MCR.This paper summarizes the characteristics of noise distribution,the intensity of sound pressure level,whether the cabin exceeds the standard,whether the noise exposure level of the crew meets the standard,and finds out the specific frequency range and the types of sound sources which cause the cabin to exceed the standard under each working condition.Finally,by studying the noise reduction measures of various main equipment and the development trend of control technology,such as sound absorption,sound insulation,vibration isolation,damping dressing,noise elimination and so on,the acoustic design process of ocean engineering ship and the idea of noise control changing from passive noise reduction to active noise reduction are put forward.