摘要
为提升新能源场站低频噪声控制效果,提出一种轻质高效的低频吸声结构,中间共振板采用简支约束,可一定程度提升低频的吸声效果和吸声带宽。建立了阻抗管有限元仿真模型,分析了微穿孔板结构、空腔厚度、中间共振板等参数对吸声性能的影响。在兼顾经济性和降噪性能的前提下,给出了吸声结构的优化参数组合,并开展阻抗管仿真、实验分析。结果表明,该结构吸声系数在中低频率段有明显的提升,吸声带宽覆盖了200~1 000 Hz频段,满足新能源场站降噪所需的中低频段吸声需求,可为新能源场站降噪用吸声结构和隔声屏障设计提供参考。
To enhance low-frequency noise control in renewable energy power stations,a lightweight and high-efficiency low-frequency sound absorption structure is proposed.The central resonance panel adopts a simply-supported constraint,improving low-frequency sound absorption performance and bandwidth to some extent.A finite element simulation model of an impedance tube was established to analyze the effects of parameters such as the micro-perforated panel structure,cavity thickness,and central resonance panel on sound absorption performance.Balancing cost-effectiveness and noise reduction performance,an optimized parameter combination for the sound absorption structure was determined,and impedance tube simulation and experiment analysis were conducted.The results show that the structure’s sound absorption coefficient is significantly enhanced in the low-to-mid frequency range with an absorption bandwidth covering 200~1000 Hz,meetsing the mid-to-low-frequency absorption requirements for noise reduction in renewable energy power stations.This study provides a reference for designing sound absorption structures and noise barriers.
作者
海涵
高宇
李坤
李羿江
杨景惠
耿明昕
贺悝
HAI Han;GAO Yu;LI Kun;LI Yijiang;YANG Jinghui;GENG Mingxin;HE Li(State Grid Shaanxi Electric Power Co.,Ltd.Construction Branch,Xi’an 710048,China;State Grid(Xi’an)Environmental Protection Technology Center Co.,Ltd.,Xi’an 710100,China;School of Information and Electrical Engineering,Hunan University of Science and Technology,Xiangtan 411100,China)
出处
《智慧电力》
北大核心
2025年第7期69-75,共7页
Smart Power
基金
国家自然科学基金资助项目(52207097)。
关键词
新能源场站
噪声控制
吸声结构
复合共振
轻质高效
renewable energy stations
noise control
sound absorption structure
composite resonance
lightweight and high-efficiency
