空调系统对地铁车内噪声影响与优化分析
时蒙刘林林周飞
Impact of Air-conditioning Systems on Metro Vehicle Interior Noise and Optimization Analysis
SHI MengLIU LinlinZAOU Fei
-
作者信息:中车南京浦镇车辆有限公司， 210031， 南京
-
Affiliation:CRRC Nanjing Puzhen Co., Ltd., 210031, Nanjing, China
-
关键词:
-
Key words:
-
DOI:10.16037/j.1007-869x.2024.05.021
-
中图分类号/CLCN:TB533+.1∶U231
-
栏目/Col:研究报告
摘要:
［目的］地铁车内噪声影响着乘车的舒适性，其中空调系统对地铁车辆车内噪声的影响不容忽视，因此有必要对相关问题进行研究，以期提高乘客的乘车体验感。［方法］基于SEA(统计能量分析)法，建立了地铁列车车内噪声仿真模型，并结合空调机组实测声源数据，进行仿真计算；研究了空调机组对车内噪声影响及优化方法。［结果及结论］在静置工况下，空调噪声对车内噪声影响最大；在运行工况下，由于动车受到牵引系统噪声的影响，空调系统对拖车车内噪声的影响比动车大；随着地铁运行速度的提高，轮轨噪声占主要成分，空调对车内噪声的影响降低；空调系统对车内噪声影响主要在400 Hz以下的中低频段，而在400 Hz以上频率成分主要由轮轨噪声及牵引系统噪声导致。地铁车辆空调系统送风口对车内噪声贡献量较大，通过优化送风口可显著降低该地铁车内噪声。
Abstracts:
［Objective］ Metro vehicle interior noise affects passenger comfort, with the air-conditioning system causing an undeniable impact. Therefore, it is necessary to study related issues to improve passenger’s riding experience. ［Method］ Using the SEA (statistical energy analysis) method, a simulation model for metro vehicle interior noise is established, and simulated calculations are performed based on field-measured sound source data from air-conditioning units. The impact of air-conditioning units on interior noise and optimization methods are investigated. ［Result & Conclusion］ The results indicate that under static conditions, air-conditioning noise has the greatest impact on vehicle interior noise. Under operating conditions, due to the influence of traction system noise on the trailer cars, the impact of air-conditioning system on interior noise in trailer cars is greater than in motor cars. As metro operating speed increases, wheel-rail noise becomes the main component, reducing the impact of air-conditioning on interior noise. The air-conditioning system mainly affects interior noise in the mid-to-low frequency range below 400 Hz, while frequency components above 400 Hz are primarily caused by wheel-rail noise and traction system noise. Since the air supply outlet of metro vehicle air-conditioning system contributes significantly to interior noise, optimizing the air supply outlet can significantly reduce interior noise levels.
- 上一篇: 地铁列车地板铝型材结构参数的轻量化隔声特性影响研究
- 下一篇: 某铝盘地铁项目制动噪声原因分析
过刊浏览
资料下载
友情链接