設計工業通風管道時需注意哪些事項！

發布人：http://www.bnlfans.net   發布時間：2021-01-22 15:10:37

眾所周知，通風管道在我們的日常生活中十分常見，經常能在建筑行業看到它們的身影，在工業通風設計中，該管道需要注意哪些事項？是不是不太清楚？今天，通風管道加工廠家將在下文為大家簡要分析一下，希望能幫到大家。

As we all know, ventilation ducts are very common in our daily life, and they are often seen in the construction industry. What matters should be paid attention to in the industrial ventilation design? Isn't that clear? Today, the ventilation pipe processing manufacturers will briefly analyze for you below, hoping to help you.

1、通風系統的防火和防爆

1. Fire and explosion protection of ventilation system

在設計有火災或爆炸危險的通風系統時，不僅要設置風量，還要設置可燃物和爆炸物的濃度測定設施，在選擇防爆風扇設置防爆門的同時，也要避免可燃物和爆炸物積存在通風管道中的死角。

When designing the ventilation system with fire or explosion risk, not only the air volume should be set, but also the concentration measurement facilities of combustibles and explosives should be set. When selecting the explosion-proof fan and setting the explosion-proof door, the dead corner of combustibles and explosives in the ventilation duct should be avoided.

2、選擇通風管的截面形狀

2. Select the section shape of the vent pipe

通風管的橫截面通常分為矩形和圓形。在相同的截面積下，圓形通風管道不僅阻力小、強度高，而且節省管道。對于圓形通風管道，直徑越小，制造越容易，保溫也越方便。然而，矩形通風管的管件比圓形通風管更容易制造，并且布置比圓形通風管更簡單。

The cross section of ventilation pipe is usually divided into rectangle and circle. Under the same cross-sectional area, the circular ventilation duct not only has small resistance, high strength, but also saves pipeline. For circular ventilation pipe, the smaller the diameter is, the easier it is to manufacture and the more convenient it is to keep warm. However, the rectangular duct is easier to manufacture than the circular duct, and the arrangement is simpler than the circular duct.

一般來說，通風管段較小，管流量較高，適合采用圓形通風管;通風管段較大時，宜采用矩形通風管，能充分利用建筑空間。對于矩形通風管，寬高比接近更好，不僅可以節約運行功率，而且可以節約投資。

Generally speaking, the ventilation pipe section is small and the pipe flow is high, so it is suitable to use circular ventilation pipe; when the ventilation pipe section is large, it is suitable to use rectangular ventilation pipe to make full use of the building space. For rectangular ventilation pipe, the aspect ratio is close to better, which can not only save operation power, but also save investment.

3、通風管道的保溫

3. Heat preservation of ventilation pipe

在通過管道輸送空氣的過程中，冷熱損失相對較大，空氣溫度應保持基本恒定，這就要求管道絕緣。通風管道加工廠家表示，管道的隔熱結構通常分為三部分，即隔熱層、防潮層和保護層。保溫層是該管道保溫的主要部分，防潮層主要用于防潮或汽體滲入保溫材料，保護層主要用于保溫層和防潮層，防潮層。

In the process of transporting air through pipeline, the cold and heat loss is relatively large, and the air temperature should be kept basically constant, which requires pipeline insulation. Ventilation duct processing manufacturers said that the pipeline insulation structure is usually divided into three parts, namely insulation layer, moisture-proof layer and protective layer. Insulation layer is the main part of the pipeline insulation, moisture-proof layer is mainly used for moisture-proof or vapor infiltration insulation material, protective layer is mainly used for insulation layer and moisture-proof layer, moisture-proof layer.

4、通風系統的進風口和出風口

4. Air inlet and outlet of ventilation system

在工業通風過程中，通風系統的進風口應設置在相對新鮮的空氣區域，并應設置在出風口的上風向，高度低于出風口，同時應避免進風口與出風口之間的短路。新污染源的通風孔通常不應小于15 m。對于同一污染物的兩個排氣缸，如果其間距離小于其幾何高度之和，則應將等效排氣缸組合起來。

In the process of industrial ventilation, the air inlet of the ventilation system should be set in the relatively fresh air area, and should be set in the upwind direction of the air outlet, the height is lower than the air outlet, and the short circuit between the air inlet and the air outlet should be avoided. The ventilation hole of new pollution source should not be less than 15 m. For two exhaust cylinders of the same pollutant, if the distance between them is less than the sum of their geometric heights, the equivalent exhaust cylinders should be combined.

從排氣口排出的空氣通常含有有害物質，需要被大氣擴散和稀釋。此時，出風口應設置在建筑物內氣流的負壓區和正壓區上方，且不應設置遮光罩以防止雨水進入通風管道。

The air discharged from the exhaust port usually contains harmful substances, which need to be diffused and diluted by the atmosphere. At this time, the air outlet should be set above the negative pressure area and positive pressure area of the air flow in the building, and the light shield should not be set to prevent rainwater from entering the ventilation duct.

5、管道的布置

5. Piping layout

管道的布置直接關系到通風系統的整體布置，與其他密切配合，不僅協調美觀，而且滿足總體布置的要求。如果通風管中有更多的排氣點，可以使用大截面歧管來連接支管。管道應盡可能直，以避免復雜的局部管件。

The layout of the pipeline is directly related to the overall layout of the ventilation system, and closely cooperate with other specialties, not only coordinate and beautiful, but also meet the requirements of the overall layout specialty. If there are more exhaust points in the vent pipe, a large section manifold can be used to connect the branch pipes. Pipes should be as straight as possible to avoid complicated local fittings.

如果輸送的氣體含有液滴，通風管應設置坡度，通風管的低點應設置水封管，以利于排除液體積聚;管道上應安裝調節和測量裝置，以便于系統的運行控制。

If the transported gas contains liquid drops, the ventilation pipe shall be set with gradient, and the low point of the ventilation pipe shall be set with water seal pipe to facilitate the elimination of liquid accumulation; adjustment and measurement devices shall be installed on the pipe to facilitate the operation control of the system.

關于設計工業通風管道時需注意的五大事項到此就講解完了，相信大家閱讀完上述通風管道加工廠家介紹的內容之后對管道設計有了更深的了解，希望以上內容能對大家有所幫助。

I believe you have a deeper understanding of the pipeline design after reading the contents of the above ventilation pipeline processing manufacturers. I hope the above contents can help you.