600 MW火电直接空冷风机的噪声及降噪措施

Noise and its reduction measures of direct air-cooling fans for a 600 MW generation unit

在国内首次提出600MW火电机组直接空冷风机的噪声问题。讨论了风机的功能、与空冷凝汽器的匹配、风机的能耗。从风机产生的噪声及其性质、噪声与风机参数的关系、噪声计算、噪声分析、噪声评价以及降噪措施等方面进行了论述,并从运行人员接触噪声源时间短的实际出发,提出建议的噪声允许值。

The paper brings forward noise problem of direct aircooling fans for a 600 MW power generation unit the firsttime in ChinaIt has discussed the function of fans,match between fans and aircooling condenser and energy consumption of fansThe noise produced by the fans,the character of noise,its harmness,the relation between noise and parameters of fans,noise calculation,its permit standards,its analysis and evaluation and measures of noise reducing were also exploredIt suggests a permit noise level according to the fact that the workers contact the noise at a little time