Ventilation duct is very important in urban construction, especially its installation quality is also harmful to gas exchange, all normal "theme activities" and work efficiency. Let's introduce in detail the hazards of ventilation pipeline installation in Shanxi Province.
1. Do a good job of preparation before construction
As the saying goes, "victory is not arrogant, defeat is not discouraged". Sufficient preparation is the prerequisite to ensure the installation quality of air duct. When preparing the fabrication of purification treatment air duct in advance, whether it is centralized in the processing plant or on the spot, it is necessary to ensure that the place is clean and closed, and there are lighting and lighting standards that meet the conditions. In addition, it is also necessary to take care of the prepared square steel pipe to minimize environmental pollution.
2. Selection of air duct materials
The selection of air duct materials is also very harmful to the construction quality of air duct. Generally speaking, in order to better ensure the net weight of the air duct, the air duct with less plate thickness needs to be selected, but in addition, the specification and working pressure grade of the air duct need to be comprehensively considered. From the perspective of design scheme, special attention should be paid to that a system software can store several types of air duct plate thickness matching different negative pressure levels.
3. Transverse connection of air duct
There is a certain emphasis on the transverse connection of the air duct. This kind of interface mode can be said to be a way to maintain the length of the air duct. It also has the effect of improving the bending stiffness and maintaining the transverse specification of the air duct. Generally, the method of transverse connection is angle iron looper flange. This kind of interface mode depends on the wall thickness, but also on the connection type and the reinforcement method of plate and wall structure.
4. The vertical joints of air ducts are closely connected
风管的竖向缝紧密连接方法能够 依据具体情况，挑选相匹配的方法。在中国、底压风管中经常应用扣式咬口联接，针对矩形框风管，协同压槽应用无一切工作压力等级，因而应用扣式咬口能够 节约一道反边工艺流程，现阶段大部分的风管竖向缝紧密连接都选用了扣式咬口。针对立缝和密封式立缝能够 应用螺栓、自攻螺钉、焊接、压凹凸痕等方式 拧紧。
The vertical joint tight connection method of air duct can select the matching method according to the specific situation. In China, button type undercut connection is often used in bottom pressure air ducts. For rectangular frame air ducts, there is no working pressure level in the application of cooperative pressure groove. Therefore, the application of button type undercut can save a reverse edge process. At this stage, button type undercut is selected for the close connection of most vertical joints of air ducts. For vertical joints and sealed vertical joints, bolts, self tapping screws, welding, indentation and other methods can be used to tighten.
5. Storage of air duct
The air duct with good prefabricated components must be stored well to prevent secondary pollution. The branch pipe can be sealed with rubber seals such as plastic film, and then the air duct can be stacked by category. Before applying the air duct, pay attention to carry out complete cleaning work, make it clear that the surface of the plate is corrosion-resistant, and do not remove dust after dryness.
The above is the detailed introduction of Shandong ventilation duct. I hope it will be helpful to you If you have any questions, please contact us We will provide you with professional service http://www.jntfgd.com