PASSIM 12K的噪声控制技术

【作者】 胡燊；

【导师】 迟毅林；

【作者基本信息】 昆明理工大学 ， 机械制造及自动化， 2008， 硕士

【摘要】 随着现代工业的发展,噪声控制问题越来越引起人们、企业和社会的重视与关注。长期暴露在高噪声环境下,人们的听力和身体健康会受到严重危害,一般性的噪声也会对人们的正常生活和工作产生不同程度的影响。为了保护人们的身体健康,很多企业投入大量的精力解决噪声问题。本文主要研究的是某烟厂PASSIM 12K卷包机的噪声问题。本论文主要研究的是某烟厂PASSIM 12K卷接机的噪声控制问题:首先,系统的分析了一下声音的特性、噪声的定义和声音测量的方法,由此对噪声有了一定的认识;其次,研究了工业噪声的特征、分类和噪声的控制原则,并对目前噪声控制技术的方法进行了系统的阐述,为噪声控制提供了理论的依据;最后,通过对PASSIM 12K卷接机的理论研究和声学测量数据分析,了解了卷包机的内部机构,确定了设备的主要噪声源以及其噪声产生的原因和特点,提出了本次设备改造相对的降噪方法和方案实施的可行性。本次改造主要采用传统的隔、吸声降噪处理方法:水松纸鼓轮(主噪声源)采用隔、吸声处理;更换所有的门体,保证门体的密封性与吸声效果;通风口采用迷宫式机构,消耗声能的同时保证其通风效果。改造完成后,对设备进行测量,对比改造前后的测量结果,判断本次设备改造是否合理和成功,由此提出改造评价,并为下一步的改造给出相关的建议。PASSIM 12K卷接机是英国某公司生产的一套烟草设备,它每时钟生产1200支香烟,自动化程度很高,内部结构非常精密和复杂,目前国内的制造企业无法达到它的制作和工艺要求,所以从声音的源头降低噪声不行。本次改造主要采用了传统的降噪方法,通过设备改造前后的测量数据不难看出,本次PASSIM 12K卷接机的噪声控制是比较成功的,很好的降低了中低频率的噪声,形成了一套烟机噪声的控制方法。更多还原

【Abstract】 With the developing of modern industrial, noise control has drawn increasing attention and concern of people, enterprises and community. Long-term exposure in the high noise environment, people’s health will be seriously harmed, the even the general noise might affect people’s normal life and work. In order to protect people’s health, many enterprises invested a lot of energy to solve the noise problems. This thesis studies noise problems of Cigarette Machine.This thesis studies about noise control of PASSIM 12K cigarette machine: first of all, the sound characteristics have been analyzed systematically; the definition of noise and how to measure the noise which make some certain awareness of the noise; Secondly, research on the characteristics of industrial noise, classification and noise control principles, expound the noise control technology for the moment, and provide a theoretical basis to Noise Control. Finally, we do comprehend the internal machinery of cigarette machine and ascertain the main resource of noise and how does the noise come into being by the theoretical researching of cigarette machine PASSIM 12K and acoustic measurement data analysis. The alteration has been done by traditional method: water-round drum of paper (the main sources of noise) with segregating and absorbing method; Replace all of the doors to ensure that doors have good sealing effect and absorption; A maze of machinery was built in the venr which consume the noise energy and guarantee the good aeration. After the completion of the production we measure the equipment, and compare the measurement results with before; judge if the transformation is reasonable and successful, propose constructive suggestions for the further transformation. PASSIM 12K Cigarette Machine is manufactured by a British tobacco company. It’s able to produce 1,200 cigarettes each hour with a high level of automation and its internal structure is greatly sophisticated and complex even the current domestic manufacturing enterprises can’t achieve its production and technological requirements. That’s the reason why reducing voices from the source of noise is not feasible. The transformation in this paper used the traditional method to reduce noise. It can be seen from the measurement data both before and after that the PASSIM 12K cigarette machine noise control is relatively successful. It lowered the noise frequency and created a set of theory of noise control.更多还原