今天小編給大家介紹下關(guān)于通風(fēng)管道是如何降低噪音的:
Today, I'd like to introduce to you how ventilation ducts reduce noise:
一.降低通風(fēng)設(shè)備聲源噪聲
I Reduce the sound source noise of ventilation equipment
（1）合理選擇通風(fēng)設(shè)備的機(jī)型。在噪聲控制要求高的場(chǎng)合，應(yīng)選用低噪聲通風(fēng)設(shè)備。不同型號(hào)的通風(fēng)設(shè)備在同意的風(fēng)量、風(fēng)壓下、機(jī)翼型葉片的離心通風(fēng)設(shè)備噪聲小，前向版型葉片的離心通風(fēng)設(shè)備噪聲大。
(1) Reasonably select the type of ventilation equipment. Low noise ventilation equipment shall be selected for occasions with high noise control requirements. Under the agreed air volume and pressure of different types of ventilation equipment, the noise of centrifugal ventilation equipment with wing blade is small, and the noise of centrifugal ventilation equipment with forward plate blade is large.
（2）通風(fēng)設(shè)備的工作點(diǎn)應(yīng)接近效率高點(diǎn)。同一型號(hào)的通風(fēng)設(shè)備效率越高，噪聲越小。
(2) The working point of ventilation equipment shall be close to the high efficiency point. The higher the efficiency of ventilation equipment of the same model, the lower the noise.
（3）在可能條件下適當(dāng)降低通風(fēng)設(shè)備的轉(zhuǎn)速。通風(fēng)設(shè)備的旋轉(zhuǎn)噪聲與葉輪圓周速度10次方成比例，渦流噪聲與葉輪圓周速度6次方（或5次方）成比例。故降低轉(zhuǎn)速可降低噪聲。
(3) If possible, reduce the speed of ventilation equipment appropriately. The rotating noise of ventilation equipment is proportional to the 10th power of impeller circumferential speed, and the eddy current noise is proportional to the 6th power (or 5th power) of impeller circumferential speed. Therefore, reducing the speed can reduce the noise.
（4）通風(fēng)設(shè)備進(jìn)、出口的噪聲級(jí)是通風(fēng)理、風(fēng)壓曾加加大。因此，設(shè)計(jì)通風(fēng)系統(tǒng)時(shí)，應(yīng)盡量減少系統(tǒng)的壓力損失。當(dāng)通風(fēng)系統(tǒng)的總量和壓力損失較大時(shí)，可將其分為小系統(tǒng)。
(4) The noise level at the inlet and outlet of ventilation equipment is that the ventilation principle and wind pressure have increased. Therefore, when designing the ventilation system, the pressure loss of the system should be minimized. When the total amount and pressure loss of the ventilation system are large, it can be divided into small systems.
（5）氣流在管道內(nèi)的流速不宜過(guò)高，以免引起再次產(chǎn)生噪聲。確定管道內(nèi)氣流流速應(yīng)根據(jù)不同要求按有關(guān)規(guī)定選取。
(5) The flow rate of air flow in the pipeline should not be too high to avoid generating noise again. To determine the air flow velocity in the pipeline, it shall be selected according to different requirements and relevant regulations.
（6）注意通風(fēng)設(shè)備與電動(dòng)機(jī)的傳動(dòng)方式。采用直聯(lián)傳動(dòng)的通風(fēng)設(shè)備噪聲小，用聯(lián)軸器的次之，用沒有接縫的三角皮帶傳動(dòng)的稍差。通風(fēng)設(shè)備應(yīng)配用低噪聲的電動(dòng)機(jī)。
(6) Pay attention to the transmission mode of ventilation equipment and motor. The ventilation equipment driven by direct coupling has low noise, followed by coupling, and the one driven by V-belt without joint is slightly worse. Ventilation equipment shall be equipped with low-noise motor.
二.傳遞途徑上對(duì)通風(fēng)設(shè)備噪聲減小
II Reduce the noise of ventilation equipment in the transmission way
（1）在通風(fēng)設(shè)備的進(jìn)、出風(fēng)口上裝配恰當(dāng)?shù)南暺鳌?/div>
(1) Install proper mufflers on the air inlets and outlets of ventilation equipment.
（2）通風(fēng)設(shè)備設(shè)減振基座，進(jìn)、出風(fēng)口用軟管連接。
(2) The ventilation equipment is equipped with a damping base, and the air inlet and outlet are connected with hoses.
（3）對(duì)通風(fēng)設(shè)備做隔聲處理。如設(shè)備通風(fēng)設(shè)備隔聲罩；在通風(fēng)設(shè)備機(jī)殼內(nèi)襯只聲材料；將通風(fēng)設(shè)備設(shè)置在專門的通風(fēng)設(shè)備室內(nèi)，并設(shè)置隔聲門、隔聲窗或設(shè)置其他吸聲設(shè)施，或在通風(fēng)設(shè)備室內(nèi)另設(shè)值班室等。
(3) Make sound insulation treatment for ventilation equipment. Such as ventilation equipment and sound insulation cover; Lining the enclosure of ventilation equipment with acoustic materials; Set the ventilation equipment in the special ventilation equipment room, and set sound insulation doors, sound insulation windows or other sound-absorbing facilities, or set another duty room in the ventilation equipment room.
（4）通風(fēng)設(shè)備室的進(jìn)、排氣通道采取聲措施。
(4) Acoustic measures shall be taken for the inlet and exhaust channels of the ventilation equipment room.
（5）將通風(fēng)設(shè)備布置在遠(yuǎn)離要求安靜的房間。
(5) Place ventilation away from rooms requiring quiet.
三.及時(shí)維護(hù)通風(fēng)管道保養(yǎng)，定期檢維護(hù)，及時(shí)更換破損零部件，排除異常，以創(chuàng)造低噪聲運(yùn)行條件。
III Timely maintain the ventilation duct, conduct regular inspection and maintenance, timely replace damaged parts and eliminate abnormalities, so as to create low-noise operation conditions.
The above is the detailed introduction of Jinan ventilation duct. I hope it will be helpful to you If you have any questions, please contact us We will provide you with professional service http://www.fsjt-gov.com
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