柴油发电机组中的降噪问题研究

Research on the Problem of Reducing Noise of Diesel Generator Set

采用隔离、吸收和消除噪声源三种方法对电站降噪问题进行了研究 ,测试结果表明 ,采用一层隔音板和两层不同材质、不同厚度吸音材料组成的隔音罩 ,利用两个单腔扩胀室和两个双腔消音器 ,以及使用折线形排风道 ,可使 2 0 0kW柴油发电机组的噪声由 10 2dB降至 81dB .

This paper deals with the problem of reducing noise of power station by means of separating noise,absorbing noise and reducing noise.The result shows that the noise of 200 kW diesel generatar set is reduced from 102 dB to 81 dB by equipping a separating noise cover with one layer separating plate and absorbing plate consisting of two layer different materials with different depths ,two dilation rooms with a single cavity and silencers with double cavity and a discharge air path of zigzag shape.