公司锅炉房噪声的综合治理设计+文献综述(3)
时间:2017-01-14 10:29 来源:毕业论文 作者:毕业论文 点击:次
Sound absorption technology:Using sound-absorbing material and absorption sound energy absorption structure to achieve the goal of control noise intensity.According to different situations with different materials and structures,Commonly used with porous sound-absorbing material, plate vibration absorption structure, resonance sound absorption structure, perforated plate combination resonance sound absorption, sound absorbing body space, etc. The theory is that sound wave encounters an obstacle, some of the sound energy is reflected, some of the sound energy is absorbed, the remaining part of through the obstacles.According to the principal of the resonance sound absorption structure of perforated plate,laying on the wind room walls, ceiling, porous sound-absorbing material (such as ultra-fine glass wool) can reduce indoor reverberation sound and its surface fixed with wire mesh.If fan chamber is too large and the roof is too high,we can set up absorption sound screen around the fan or fan top surface . It can also have a better effect by taking the method of local processing It always adopt the way of sound absorbing body is better to cover about 40%of ceiling area or about 15% of the total indoor surface area. Space sound-absorbing body suspension height should be lower,and better to be nearer from the sound source. Through the comprehensive governance of the noise of the boiler room, the noise will be greatly improved and the health of the employees are also guaranteed.This design will achieve its expected goals. Keywords：opacity technique； Silencing technology； Sound absorption technology ； noise hazard 目录 1前言 1 2某公司锅炉房噪声源调查、测试与分析 2 2.1噪声的现状研究 2 2.2噪声的危害及噪声源调查、测试与分析 2 2.2.1噪声的危害 2 2.2.2锅炉房的噪声调查分析 3 2.2.3锅炉房的噪声测试数据 3 3某公司锅炉房噪声污染的卫生学评价 4 3.1锅炉房噪声的卫生学评价 4 3.2 锅炉房内噪声的测试及频谱分析 6 4某公司锅炉房噪声的治理方案选择 9 4.1抑制噪声源降低锅炉房噪声的方案 9 4.2控制噪声传播途径的方案 10 4.3 保护接受者的方案 12 5某公司锅炉房噪声的综合治理设计 13 5.1操作室的设计 13 5.2休息室的综合设计 18 6 效果分析 23 7结束语 24 致 谢 25 参考文献 26 1前言 随着人们生活质量的进一步提高，城市生活质量，人们的满意程度，城市居民的身体状况等问题亦应运而生。其中，噪声问题已经跃入人们的视野当中。它已成为一种主要的环境污染，不仅影响了人们的正常生活、工作、学习和休息，而且危害到人们的身体健康。如何解决噪声带给生活，健康的危害也不得不受到重视。 同样，随着城市用气完全普及，以及城市的迅速发展，当人们在满足了日常生活需求后，又对生活质量提出了更高的要求。由于城市建设的迅猛发展，锅炉房的环境与运行已经与居民的生活区紧密相连。这些场所在日常运行中产生的噪声已对周边的环境带来了一定的影响。往往在锅炉房附近的居民常常受到极大地噪声影响，这些声音通常超过了国家的标准，使居民的切身利益受到严重损害，生活质量无法得到保障。因此，对锅炉房噪声的治理是非常有必要的。[2] 2某公司锅炉房噪声源调查、测试与分析 (责任编辑：qin) |