摘要
某厂在技术改造中所安装的加热炉风机运行时产生的噪声严重污染环境并有损职工健康。针对加热炉风机噪声特征,在风机进口处设计安装了阻性复合消声器,改进风口的软连接,增强转子叶轮刚度,做好转子叶轮的动静平衡及振动检测,把振动速度值控制在5 mm/s以下;选用隔声门和隔声窗并采用吸声材料包扎风机外壳和管网,调整风量,控制风门角度,避开通风系统异常噪声及突变。实施一系列降噪措施后使加热炉风机的噪声从84 dB(A)左右降低到78 dB(A)左右,平均降低了6 dB(A),使风机室周边环境得到了改善。
The noise coming from running blowers of the reheating furnace installed in the technical revamp of a specific mill severely contaminates the environments and hurts the health of the worker and staff.In light of the character of the noise from the blower of the reheating furnace a series counter measures have been taken such as installing a silencers at the inlet of the blower,improving the flexible link of the tuyeres,strengthening the stiffness of the blade of rotors,making proper balance between the dynamic and static status of the blade of rotors and checking and examining their vibration,controlling the value of vibration speed within the range of less than 5 mm/s,selecting proper sound insulation door and windows and wrapping the shell of the blower and network of tubes with selected sound absorb materials,well adjusting the wind blow rate,controlling the angle of the wind door and avoiding the abnormal noise from the ventilation system and mutation.By adoption of the above mentioned noise reduction measures the noise from the reheating furnace blowers has been lowered to about 78 db（A） from original 84 db（A）,an average reduction of noise about 6 db（A）,therefore the environmental conditions around the blower chamber have been greatly improved.
出处
《武钢技术》
CAS
2011年第5期44-47,共4页
Wisco Technology
关键词
加热炉
噪声特征
控制方法
reheating furnace
noise character
control method
