燃气电厂立式余热锅炉低频噪声控制  

Low Frequency Noise Control of Vertical HRSG in a Gas Power Plant

作　　者：钟振茂 赵迎九 ZHONG Zhen-mao;ZHAO Ying-jiu(Huadian Heavy Industries Co. Ltd., Beijing 100077, China)

机构地区：[1]华电重工股份有限公司,北京100077

出　　处：《噪声与振动控制》2017年第3期211-215,共5页Noise and Vibration Control

摘　　要：某燃气电厂的立式余热锅炉噪声很大,低频突出,且由于布局较紧凑,常规的整体隔声围护措施无法实施。为此,针对该类型锅炉的低频噪声进行研究,表明其低频噪声主要来自于高温烟气流经换热管阵时产生的涡流脱落噪声,根据分析结果,研发了燃气电厂立式余热锅炉低频噪声源头治理成套装置,放置在锅炉内部,消除低频噪声。产品在实际中进行了应用,结果表明,该装置能够降低锅炉低频噪声,明显改善周边声环境。Low-frequency noise of the vertical heat recovery steam generator(HRSG)of a gas power plant is found to be very large.Because of the compact layout in the plant area,the conventional whole sound insulation enclosure measures cannot be implemented.Therefore,the low-frequency noise of this type vertical HRSG is investigated.It is found that the low frequency noise mainly come from the vortex shedding when the hot smoke flows through the heat-exchange array.According to the results of analysis,a noise source control device for the vertical HRSG of the gas power plant is researched and developed and assembled inside the HRSG.As a result,the low-frequency noise of the HRSG is significantly reduced and the surrounding acoustic environment is greatly improved.

关 键 词：声学 立式余热锅炉 低频噪声 涡旋脱落 成套装置 

分 类 号：TK229.92[动力工程及工程热物理—动力机械及工程] TB533.1[理学—物理]