风机消声器（英文版）技术分析、产品安装、使用说明书？ 

一、简介
    电站锅炉风机消声器是一种降低流体气动噪声的装置。风机消声器的主要功能是降低电站锅炉风机、主风机和密封风机进口的气流噪声。在电站风机和消声器进行了大量的国内外研究，基于对消声器断裂设计的基础，国内离心风机噪声的特点，经过反复实验和筛选，建立了良好的声学性能，消声器流体阻力小，能满足大送风风机噪声最佳需求，流动阻力。本产品适用于离心风机和轴流风机。   
两。结构特点
设备形式：消声器多为立式安装，也可卧式安装。
    为了防止外来杂质的吸入，消声器吸入口设置在防护网前端，在防雨棚顶部安装安全网，防止雨水进入。下部为消声器体。阀体由普通碳钢板组焊接而成，消声器体内设置消声器单元，与阀体组焊接以提高刚性。出口和风道采用焊接或法兰连接。
    采用了一种具有良好厚度的相间吸声器的声阻抗复合消声器。该结构具有频带宽、消噪高、阻力小、适用于大流量等特点。
消声器主体主要由消声器壳体和消声单元组成。外壳为长方体。消声元件设置在中间的通道，通道是由穿孔管消声器有限元网格，棉制孔超细玻璃纤维和玻璃纤维布、消声单元在很宽的频率范围内具有良好的消声效果，还具有良好的气动特性，以及导流，特别设计的穿孔板，进一步减少阻力损失。
风扇进气消声器的设计符合JB／t6891-2004”风机消声器技术条件”。
风机进气消声器的设计符合gbt17-88设计规范》《钢结构。
三、规格及技术参数
1、消声器的类型：cdsa-a，B，C.
其中：A长，B宽，C高。
2。技术参数：消声器体积：大于25dB（A）。
设计流程：一次风机168407m3 /小时
风机为454244立方米/小时。
四、安装点：
1。消声器应根据每个消声单元的数量（见安装图）和现场装配中的气流方向顺序安装。
2者之间采用法兰连接。消音装置，法兰之间采用石棉带密封。
3。消声器由支撑腿支撑在横梁上，通过焊接固定。
五、注意事项
1。消声器的粉尘含量应小于150mg／m3。在使用高粉尘的情况下，应采用除尘器。
2、开有防雨棚，消声器不允许水雾太大，油雾或腐蚀性气体通过气体温度均小于150。
3，如果空气中的灰尘含量影响吸声效果，每年可清洗一次，将消音器表面的灰尘清理干净。
4。定期清理雨棚柱上的杂物。
     Fan muffler technical analysis, product installation, instructions for use 消音器 压力：2.0MPa；温度：215℃；口径：DN50
I. brief introduction

     Now the fan muffler used in the power plant boiler is a device to reduce the aerodynamic noise of the fluid. The main function of the fan muffler is to reduce the air flow noise of the fan and primary fan and the inlet of the sealed fan in the power station boiler. In the power plant fan and the muffler made a lot of study at home and abroad, based on the basis of the design of muffler broken, noise characteristics of domestic centrifugal fan, after repeated experiments and screening, developed a good acoustic attenuation performance, sound damper fluid resistance small, to meet the needs of large air supply the optimum requirement of fan noise, flow resistance. The product is suitable for centrifugal fans and axial fans.

Two. Structural features
    
Equipment form: muffler mostly vertical installation, can also be horizontal installation.
In order to prevent inhalation of external impurities, the silencer suction outlet is arranged on the front end of the protective net, safety net is installed on the top part of anti canopy, to prevent rainwater from entering. The lower part is the muffler body. The body is welded by an ordinary carbon steel plate group, and a silencer unit is arranged inside the body and is welded with the body group to increase the rigidity. The outlet and the air duct are welded or flanged.
     An acoustic impedance composite muffler with thick and thin interphase acoustic absorber is adopted. The structure has the characteristics of wide frequency band, high noise elimination, small resistance and suitable for large flow rate.
    
The muffler body is mainly composed of a muffler shell and an anechoic unit. The shell is cuboid. Muffler element is arranged in the middle of the channel, the channel is made of perforated muffler element mesh, superfine glass fiber and glass fiber cloth made of cotton hole, muffler unit has good silencing effect in a wide frequency range, also has good aerodynamic characteristics, and the diversion, perforated plate for special design, further reducing resistance loss.

     The fan inlet muffler design conforms to JB/T6891-2004 "fan muffler technical conditions".
    
Fan inlet muffler design conforms to GBT17-88 "code for design of steel structure".
Three, specifications and technical parameters
    
1.muffler type: CDSA-A, B, C.
Among them: A - long, B - wide, C - high.

     2.technical parameters: muffler volume: greater than 25dB (A).
Design flow: primary fan 168407m3/h
The blower is 454244 m3/h
Four, installation points:

     1. the muffler should be installed in sequence according to the number of each anechoic unit (see the installation diagram) and the direction of the airflow in the field assembly.
Flange connection is used between the      2. silencing units, and asbestos band sealing is applied between the flanges.
The
     3. muffler is supported on the crossbeam by supporting legs and fixed by welding.
Five, matters needing attention
1. The dust content of muffler should be less than 150mg/m3. In situations such as the use of high dust, should the dust filter.
2, open with the anti canopy, muffler does not allow water fog is too big, oil mist or corrosive gas through the gas temperature are less than 150.
3, if the dust content in the air affects the sound absorption effect, it can be cleaned once a year, cleaning the dust on the surface of the silencer unit.

     4. Clean up the sundries on the net of the rain shelter pillar periodically.