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用标准卷材做排烟管道的方法

来源:/添加时间:2018-01-13 15:39:00
采用标准长度的直线管段,将各种变径管和接头的数量减至最少。直的、标准长度的风管造价相对便宜,因为它们的加工费低,标准长度的直风管,可按标准宽度的钢板卷材在白动生产线上制作。而任何段非标准长度的矩形风管,从技术上说,都可当作配件,因为它们不可能用标准卷材做成。
Secondly, the standard length of the straight line tube is used to minimize the number of variable diameter tubes and joints. Straight and standard length wind pipes are relatively cheap, because their processing fees are low, and the straight length pipes with standard length can be made on the white line production line according to the standard width of steel coil. And any non - standard length of the rectangular duct, technically, can be used as a part, because they can not be made of standard coils.
圆形风管允许采用较高的风速。一个中型变风量空调系统,其风速可达20m/s,而一个大型变风量宁调系统,其风速则可高达30m/S。对矩形风管的允许风速则一般都较低,风速过高容易引起扁平风管壁的共振而产生噪声,特别是会产生低频噪声并传至室内。
The circular wind pipe allows for higher wind speed. Benevolent ventilation introduces a medium air variable air conditioning system with a wind speed of up to 20m/s, and a large VAV Ning system with a wind speed of up to 30m/S. For the rectangular duct, the allowable wind speed is generally low. The high wind speed is easy to cause the resonance of the flat duct wall, resulting in noise, especially the low frequency noise and the indoor flow.
螺旋圆形风管实际上可做成任意长度。椭圆形风管的标准长度则完全取决于金属加工厂的加工标准。有的设计者总是认为,在一个风管系统平面设计中,频繁地减小风管断面尺寸,似乎就可以减少一次投资。其实不然。
A spiral circular pipe can actually be made into any length. The standard length of the oval air duct is entirely dependent on the processing standard of the metal processing plant. Some designers always think that, in a system of graphic design in the wind pipe, frequently reduced section size of wind pipe, seems to be an investment can be reduced. In fact, it is not.
采用圆形风管和较高的送风速度,将可显著地节省投资。首先,与类似的矩形风管系统相比,圆形风管系统将可节省15%一30%的薄钢板。
The use of a circular pipe and higher air supply speed will significantly save investment. First, the circular wind pipe system will save 15% 1 30% of the thin steel plate compared to the similar rectangular duct system.
例如,同样输送17000m3/h的空气,根据控制噪声的要求,圆形风管的风速可取19m/s,矩形风管则取10m/s,它们的钢板消耗量比较可见表5-1。从表中可知,采用圆形风管,可节约37%的薄钢板。
For example, the air that also carries 17000m3/h, according to the requirements of control noise, the wind speed of the circular duct is 19m/s, and the rectangular duct is 10m/s. The consumption of the steel plate is more than 5-1. It can be seen from the table that the use of a circular pipe can save 37% of the thin steel plate.

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