1. Laying principle of ventilation duct installation system

管道铺设分明装、暗装，一般采用明装。因为明装以便于检修，在无法采用明装时考虑暗装方式，管道尽可能的集中成列，尽量沿墙或柱子平行铺设，若管径大或保温应布局在靠墙侧。一般两根管道平行布局时，间距不小于100～200mm。

Pipeline laying shall be clearly installed and concealed, and generally open installation shall be adopted. Because the open installation is convenient for maintenance, the concealed installation method shall be considered when the open installation cannot be adopted. The pipes shall be concentrated in columns as far as possible and laid parallel along the wall or column as far as possible. If the pipe diameter is large or the thermal insulation shall be arranged near the wall. Generally, when two pipes are arranged in parallel, the spacing shall not be less than 100 ~ 200mm.

2、通风管道加工系统的连接原则

2. Connection principle of ventilation duct processing system

在以焊接为主要连接方式方法的管道中，应设置足够数量的法兰连接，在以螺纹为主的连接管道中应设置足够的活接头，以便宜于安装、拆卸、检修

In the pipeline with welding as the main connection method, a sufficient number of flange connections shall be set, and in the connecting pipeline with thread as the main connection method, sufficient movable joints shall be set to make it cheaper for installation, disassembly and maintenance

3、通风管道加工系统的支撑原则管道不宜与阀件直接支撑在设备上，应单独设置支架或吊架，管道的焊缝位置应在施工方便或受力较小的地方，焊缝不得位于支架处且距离不小于200mm。

3. Support principle of ventilation pipe processing system: the pipe shall not be directly supported on the equipment with the valve, and the support or hanger shall be set separately. The weld of the pipe shall be located at the place where the construction is convenient or the stress is small, and the weld shall not be located at the support and the distance shall not be less than 200mm.

4、不同含尘气体性质不同，则净化的分段处理应不同。

4. If the properties of different dusty gases are different, the subsection treatment of purification should be different.

当污染源多时可以集中在一个净化系统中，也可分为几个系统，但出现污染物混合会引起燃烧、爆炸危险、不同温度和湿度的气体，混合后出现管道内结露、粉尘或气体性质不同，影响回收或净化效率的。

When there are many pollution sources, they can be concentrated in one purification system or divided into several systems. However, the mixing of pollutants will cause combustion, explosion hazards, gases with different temperatures and humidity. After mixing, condensation, dust or different gas properties in the pipeline will affect the recovery or purification efficiency.

5、通风管道加工系统布局中要保证整体系统的漏损小，确保吸尘口的有足够的风量。

5. The layout of ventilation duct processing system shall ensure that the leakage of the overall system is small and that there is sufficient air volume at the dust suction port.

6、通风管道加工系统布局要减小阻力。

6. The layout of ventilation duct processing system shall reduce resistance.

通风管道安装过程中如果安装不好会产生噪音、漏风、布局不合理造成管材浪费等问题，都说三分产品，七分安装，安装比产品本身更为重要，建议大家选择有经验的安装团队

In the process of ventilation duct installation, if the installation is not good, it will produce noise, air leakage, unreasonable layout, resulting in pipe waste and other problems. It is said that there are three products and seven installation. Installation is more important than the product itself. It is recommended that you choose an experienced installation team