专注通风管道加工·排烟罩

　　The primary ventilation system has two methods in the calculation of equipment, one is the drawing method, the other is the transformation method. This time, we will talk about the application of transformation methods. This time, the main focus is on the matters needing attention in the operation of air duct and air valve in ventilation system.

　　一、风管的辨认

　　Identification of air ducts

　　关于郑州风管加工的转化之前，有一个内容要求先清楚，那就是关于风管的标高。用高度调整指令检查时，有时显示出来的效果不一样。那是由于，管线和管道的标高就是线或管的中间标高，往常再说管道多高时，就是把管道当作一根线。而假定做风管，那在标明标高时，办法就有些不同。要说风管管底标高，仍是中间标高，仍是顶标高。所以在风管之前，要看清图纸上的风管将来是上平齐，仍是下平齐，仍是中间齐，那相对应的调整管底标高，中间标高和顶标高。（此外，在做风管转化时，也要针对性的要运用对应的一种）。

　　Before the transformation of air duct processing in Zhengzhou, there is a requirement to be clear, that is, the elevation of air duct. When checking with highly adjusted instructions, sometimes the results are different. That's because the elevation of pipelines and pipes is the middle elevation of pipelines or pipes. Usually, how high a pipeline is, the pipeline is regarded as a line. Assuming that the air duct is made, the method of marking the elevation is somewhat different. The bottom elevation of duct is still the middle elevation and the top elevation. Therefore, before the duct, it is necessary to see that the duct on the blueprint will be up-level, down-level, or in the middle, which corresponds to the adjustment of the bottom, middle and top elevation of the duct. (In addition, when making air duct conversion, we should also use the corresponding one.

　　那现在要做好风管转化，这一步要输入好以下方面：一是风管的材料，二是风管的壁厚，三是风管的接口型式，四是风管的保温厚度。这些参数看一下阐明，假定没有的话参看05N4-3的相关规定。

　　Now it is necessary to do a good job of air duct transformation, this step should input the following aspects: first, the material of the air duct, second, the wall thickness of the air duct, third, the interface type of the air duct, and fourth, the insulation thickness of the air duct. These parameters are illustrated by looking at the relevant provisions of 05N4-3, assuming they are not available.

　　二、风阀的制作及注意事项

　　2. Manufacture of air valve and matters needing attention

　　关于风阀能够用转化，也能够直接制作，办法能够参看转化设备。这儿说一劣势阀中比较特别的内容。在管道里边，阀门是不扣减管道长度的，但在风管里边，风阀是要扣减掉风管的长度的，关于不同的风阀类型，有不同的扣减办法。还有一种状况，风管的宽度与风阀的长度有一个对应联络。咱们能够依据具体的阐明来挑选不同的风阀类别。

　　About the air valve can be converted, but also can be directly manufactured, the method can refer to the conversion equipment. Here is a special part of the inferior valve. In the pipeline, the valve does not deduct the length of the pipeline, but in the duct, the valve is to deduct the length of the duct. There are different deduction methods for different types of valves. In another case, the width of the duct corresponds to the length of the valve. We can select different types of air valves according to specific specifications.