室内箱式变压器结构声污染及对策

通过对置于住宅楼底层室内箱式变压器引起的结构声污染进行调查实测，在对箱式变压器结构声传播进行声学分析基础上，提出了切实可行的防治对策，经实际工程应用验证，效果较好。对机房正上方住房主卧内降噪量为5.0dB，室内夜间噪声降为30.2dB，各层住户夜间烦恼度普遍从非常烦恼或烦恼降为有点烦恼和不大烦恼。这从噪声污染控制的角度证明了变配电房置于住宅楼等噪声敏感建筑物室内底层甚至更高楼层在技术上是可行性的。同时也为杭州市正在试点推广的箱式变压器置于噪声敏感建筑物底层提供了实践依据。

Structural noise pollution and controlment of transformer

The countermeasure based on investigation of structural noise pollution caused by indoor box\|transformer and acoustic analyses is brought forward, and the actual project's test shows that the countermeasure has good effects in reality. The noise level of main bedroom above machine room drops 5.0 dB,and the indoor night noise level drops to 30.2 dB. the subjective annoyance of every layer residents commonly fall from very annoyed or annoyed to a little annoyed and not very annoyed. This shows that the transformer installation in the ground floor or much higher floor is feasible by using the countermeasure and noise control. Meanwhile it gives the scientific evidence on the installation on noise sensitive buildings.