風(fēng)機消聲器（英文版）技術(shù)分析、產(chǎn)品安裝、使用說明書？
一、簡介
電站鍋爐風(fēng)機消聲器是一種降低流體氣動噪聲的裝置。風(fēng)機消聲器的主要功能是降低電站鍋爐風(fēng)機、主風(fēng)機和密封風(fēng)機進口的氣流噪聲。在電站風(fēng)機和消聲器進行了大量的國內(nèi)外研究，基于對消聲器斷裂設(shè)計的基礎(chǔ)，國內(nèi)離心風(fēng)機噪聲的特點，經(jīng)過反復(fù)實驗和篩選，建立了良好的聲學(xué)性能，消聲器流體阻力小，能滿足大送風(fēng)風(fēng)機噪聲最佳需求，流動阻力。本產(chǎn)品適用于離心風(fēng)機和軸流風(fēng)機。 
兩。結(jié)構(gòu)特點
設(shè)備形式：消聲器多為立式安裝，也可臥式安裝。
為了防止外來雜質(zhì)的吸入，消聲器吸入口設(shè)置在防護網(wǎng)前端，在防雨棚頂部安裝安全網(wǎng)，防止雨水進入。下部為消聲器體。閥體由普通碳鋼板組焊接而成，消聲器體內(nèi)設(shè)置消聲器單元，與閥體組焊接以提高剛性。出口和風(fēng)道采用焊接或法蘭連接。
采用了一種具有良好厚度的相間吸聲器的聲阻抗復(fù)合消聲器。該結(jié)構(gòu)具有頻帶寬、消噪高、阻力小、適用于大流量等特點。
消聲器主體主要由消聲器殼體和消聲單元組成。外殼為長方體。消聲元件設(shè)置在中間的通道，通道是由穿孔管消聲器有限元網(wǎng)格，棉制孔超細(xì)玻璃纖維和玻璃纖維布、消聲單元在很寬的頻率范圍內(nèi)具有良好的消聲效果，還具有良好的氣動特性，以及導(dǎo)流，特別設(shè)計的穿孔板，進一步減少阻力損失。
風(fēng)扇進氣消聲器的設(shè)計符合JB／t6891-2004”風(fēng)機消聲器技術(shù)條件”。
風(fēng)機進氣消聲器的設(shè)計符合gbt17-88設(shè)計規(guī)范》《鋼結(jié)構(gòu)。
三、規(guī)格及技術(shù)參數(shù)
1、消聲器的類型：cdsa-a，B，C.
其中：A長，B寬，C高。
2。技術(shù)參數(shù)：消聲器體積：大于25dB（A）。
設(shè)計流程：一次風(fēng)機168407m3 /小時
風(fēng)機為454244立方米/小時。
四、安裝點：
1。消聲器應(yīng)根據(jù)每個消聲單元的數(shù)量（見安裝圖）和現(xiàn)場裝配中的氣流方向順序安裝。
2者之間采用法蘭連接。消音裝置，法蘭之間采用石棉帶密封。
3。消聲器由支撐腿支撐在橫梁上，通過焊接固定。
五、注意事項
1。消聲器的粉塵含量應(yīng)小于150mg／m3。在使用高粉塵的情況下，應(yīng)采用除塵器。
2、開有防雨棚，消聲器不允許水霧太大，油霧或腐蝕性氣體通過氣體溫度均小于150。
3，如果空氣中的灰塵含量影響吸聲效果，每年可清洗一次，將消音器表面的灰塵清理干凈。
4。定期清理雨棚柱上的雜物。
Fan muffler technical analysis, product installation, instructions for use 消音器 壓力：2.0MPa；溫度：215℃；口徑：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. |
