LI Tienan, HU Sheng, WU Xiaowen, et al. Acoustic Field Propagation Characteristics of Indoor Dry Distribution Transformer Noise and Its Control Technology[J]. 2017, 37(2): 15-19.
LI Tienan, HU Sheng, WU Xiaowen, et al. Acoustic Field Propagation Characteristics of Indoor Dry Distribution Transformer Noise and Its Control Technology[J]. 2017, 37(2): 15-19.DOI:
室内干式配电变压器噪声声场传播特性及治理
摘要
建立了典型结构室内配电变压器的噪声空气声场传播有限元模型
对噪声在空气中传播和衰减的基本特性进行了定量计算
分析了声源强度、物体表面吸声系数、声源位置三个主要因素对声场分布特性的影响
并根据所得传播和衰减规律
提出了相应的治理方案
取得了良好的控制效果。
Abstract
A finite element model( FEM) of noise field propagation in a typical two-storey ten-room structure for distribution transformer is established. The basic characteristics of noise propagation and attenuation in the air are quantitatively calculated
by analyzing the influence of three main factors
the sound source intensity
surface acoustic absorption coefficient and the position of sound source
on the distribution of sound field. According to the law of noise propagation and attenuation
corresponding noise control techniques are proposed