涩老板在线免费视频_午夜成人精品_神马理论午夜,,_亚洲有薄码区久久欧美精品一区_97人人色_神马在线精品_成人熟女一区二区_亚洲二区三区四区_人妻午夜免费_大鸡巴猛男爆操骚逼国产一区二区_丁香婷婷久久一区二区三区_岛国内射美女_亚洲一级电影,亚洲欧美日韩国产最新版,亚洲五月综合缴情综合久久本,少妇色情喷水又紧又爽小说,巜上司的少妇的滋味,国产精品三级女人国产香蕉,亚洲最好的免费电影,欧美亚洲国产成人精品,国产永久一区二区三区,亚洲综合一区无码精品,歳の熟女セックス,内射带小孩熟妇,果冻传媒在线看免费视频观看,成人欧美一区二区三区片,亚洲 片内射欧美美妇,一本无码人妻在中文字幕免费,亚洲无毛视频,中文字幕丰满孑伦无码专区,亚洲爆乳无码专区色戒纶理,肉乳床欢无码片动漫软件,欧美日韩一区二区另类,久热只有精品在线直播,精品亚洲一区二区在线播放,精品国产乱码久久久久久影片,国产一级高清在线观看,国产精品福利在线一区,成人动漫下载,乱伦性爱视频,xo无码AV毛,国产黄A片免费网站免费,日韩欧美一级特黄特色大片

How can we achieve the sound insulation of ventilation ducts? Today, Baowang ventilation will give you a brief introduction.

通風管道的噪聲有兩個來源，一個是機械振動噪聲。這是由于在設備運行時，風向標、風扇和設備外殼高速振動造成的噪音。另一個是空氣動力噪音。這是通風管道內空氣流動產生的主要噪聲源，也是通風管道噪聲處理的主題。

There are two sources of noise in ventilation ducts. One is mechanical vibration noise. This is due to the noise caused by the high-speed vibration of the wind vane, fan and equipment shell when the equipment is running. The other is aerodynamic noise. This is the main noise source generated by the air flow in the ventilation duct, and it is also the subject of noise treatment in the ventilation duct.

通風管噪音處理方法包括：

The noise treatment methods of ventilation pipe include:

風管的彎頭

Elbow of air duct

當空氣流經管道彎頭時，可能會產生噪音。通過在前后風道上設置風道彎頭，可以降低噪音。濟南通風管道廠家為您介紹，空氣動力噪聲通過風道彎頭時，經過折射和吸收，噪聲會被大大衰減。

Noise may be generated when air flows through pipe bends. The noise can be reduced by setting air duct elbows on the front and rear air ducts. Jinan ventilation duct manufacturer introduces that when aerodynamic noise passes through the air duct elbow, the noise will be greatly attenuated after refraction and absorption.

吊頂回風

Ceiling return air

換句話說，安裝風管的整個天花板空間就是一個回風箱，這樣不僅可以減少噪音，也就是節省空間，還可以達到隔音的目的。

In other words, the whole ceiling space where the air duct is installed is a return air box, which can not only reduce noise, that is, save space, but also achieve the purpose of sound insulation.

降噪和吸音

Noise reduction and sound absorption

通過在管道上涂抹振動控制涂料，可以減少振動。另外，通過用隔音材料包裹風道并吸收聲音，可以進一步減少噪音的傳播。

Vibration can be reduced by applying vibration control coating to the pipeline. In addition, the transmission of noise can be further reduced by wrapping the air duct with sound insulation materials and absorbing sound.

支架處理

Support treatment

風道需要依靠墻板，使用防震吊桿懸掛，以防止振動的傳遞。以同樣的方式，接入電力設備的管道不僅要翻墻，還要使用軟連接，以減少振動的傳播途徑。如果有必要，將風管穿過墻壁，以提供振動隔離和隔音密封。

The air duct needs to rely on the wall panel and be hung with shockproof suspenders to prevent the transmission of vibration. In the same way, the pipes connected to power equipment should not only climb over the wall, but also use soft connections to reduce the transmission path of vibration. If necessary, pass the duct through the wall to provide vibration isolation and acoustic seal.

風管變形

Air duct deformation

寶旺通風認為，除了上述的風管噪聲控制措施外，還可以通過改變風管本身的結構來達到噪聲控制的目的。通風管道改進后，不僅管壁的振動會大大減弱，而且氣流的脈動聲也可以通過吸聲而大大減弱。使用這種帶有消聲彎頭、消聲靜壓箱和通風消聲器的新管道結構使噪聲控制非常有用，一般來說，不需要后期的噪聲控制措施。此外，在電機下面可以安裝一個長的回風口，作為維修考慮的檢修口。

Baowang ventilation believes that in addition to the above air duct noise control measures, the purpose of noise control can also be achieved by changing the structure of the air duct itself. After the improvement of ventilation duct, not only the vibration of pipe wall will be greatly weakened, but also the pulsating sound of air flow can be greatly weakened by sound absorption. The use of this new pipe structure with silencing elbow, silencing static pressure box and ventilation muffler makes noise control very useful. Generally speaking, no later noise control measures are required. In addition, a long air return outlet can be installed under the motor as an access port for maintenance.