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设计工业通风管道时需留意哪些事项!

发布人:   发布时间:2021-01-22 15:10:37

众所周知,通风管道在我们的日常生活中十分常见,经常能在建筑行业看到它们的身影,在工业通风设计中,该管道需要留意哪些事项?是不是不太清楚?今天,通风管道加工厂家将不才文为大家简要阐发一下,希望能帮到大家。

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、通风系统的防火和防爆

1. Fire and explosion protection of ventilation system

在设计有火灾或爆炸危险的通风系统时,不仅要设置风量,还要设置可燃物和爆炸物的浓度测定设施,在选择防爆风扇设置防爆门的同时,也要避免可燃物和爆炸物积存在通风管道中的死角。

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、选择通风管的截面外形

2. Select the section shape of the vent pipe

通风管的横截面通常分为矩形和圆形。在不异的截面积下,圆形通风管道不仅阻力小、强度高,并且节省管道。对于圆形通风管道,直径越小,制造越轻易,保温也越便利。然而,矩形通风管的管件比圆形通风管更轻易制造,并且安插比圆形通风管更简单。

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.

一般来说,通风管段较小,管流量较高,适合采用圆形通风管;通风管段较大时,宜采用矩形通风管,能充实操作建筑空间。对于矩形通风管,宽高比接近更好,不仅可以节约运行功率,并且可以节约投资。

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.

                                   ag真人

3、通风管道的保温

3. Heat preservation of ventilation pipe

在通过管道输送空气的过程中,冷热损失相对较大,空气温度应保持基本恒定,这就要求管道绝缘。通风管道加工厂家暗示,管道的隔热布局通常分为三部门,即隔热层、防潮层和庇护层。保温层是该管道保温的主要部门,防潮层主要用于防潮或汽体渗入保温材料,庇护层主要用于保温层和防潮层,防潮层。

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、通风系统的进风口和出风口

4. Air inlet and outlet of ventilation system

在工业通风过程中,通风系统的进风口应设置在相对新鲜的空气区域,并应设置在出风口的上风向,高度低于出风口,同时应避免进风口与出风口之间的短路。新污染源的通风孔通常不应小于15 m。对于同一污染物的两个排气缸,假如其间距离小于其几何高度之和,则应将等效排气缸组合起来。

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.

从排气口排出的空气通常含有有害物质,需要被大气扩散和稀释。此时,出风口应设置在建筑物内气流的负压区和正压区上方,且不应设置遮光罩以防止雨水进入通风管道。

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、管道的安插

5. Piping layout

管道的安插直接关系到通风系统的整体安插,与其他密切配合,不仅协调美不雅观,并且满足总体安插的要求。假如通风管中有更多的排气点,可以使用大截面歧管来连接支管。管道应尽可能直,以避免复杂的局部管件。

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.

假如输送的气体含有液滴,通风管应设置坡度,通风管的低点应设置水封管,以利于排除液体积聚;管道上应安装调节和测量装置,以便于系统的运行控制。

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.

关于设计工业通风管道时需留意的五大事项到此就讲解完了,相信大家阅读完上述通风管道加工厂家介绍的内容之后对管道设计有了更深的了解,希望以上内容能对大家有所帮手。

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.

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