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  1. Ventilation pipes should be protected against damage during transportation.


  2. The connection of tenon-joint air duct is coated with adhesive at the tenon-joint to enhance the strength of the joint.


  3。 When air ducts are installed overhead after ground pre-assembly, the length of pre-assembly is limited in order to prevent the bending of air ducts caused by self-weight from destroying component interfaces。


  4. When the end of glass fiber composite board air duct is cut face, before assembling flange connector, the end of the pipe should be sealed with tape or glue to prevent the glass fiber from exposing and flying away.


  5. The method of making and installing the supporting parts for the vertical installation of the glass fibre composite board air duct connected by illegal blue.

极速时时彩官网  6、竖井内通风管道垂直安装,由于空间少,又不便于以后检修,故风管一般采用外套角钢法兰连接以增加连接点的牢固程度和强度,并把法兰作成“井”形,吊筋直接吊在角钢法兰的吊耳上而不另设支撑件。

  6. Vertical installation of ventilation pipes in vertical shaft, due to the lack of space and the inconvenience of later maintenance, so the air duct generally adopts the outer angle steel flange connection to increase the firmness and strength of the connection points, and the flange is made into a "well" shape, and the suspension bar is directly suspended on the lifting lug of the angle steel flange without additional supporting parts.


  The installation and processing of the air duct is to insert the slot sleeve of the flange into the end of the air duct plate, and to bond it with adhesive. If there is no interference between them, there will be some gap between the groove and the end face of the air duct when inserting, which makes it impossible to stick together.


  The installation quality of ventilation equipment affects air exchange.


  1. Preparing for construction


  As the saying goes, "no mistake in cutting firewood by sharpening knives", adequate preparation is the premise to ensure the installation quality of air ducts. When preparing for the production of purified air ducts, whether centralized production in factories or on-site production, it is necessary to ensure that the site is clean and closed, and has the lighting and lighting conditions that meet the requirements. In addition, we should also take care of the square tubes made to avoid pollution as far as possible.


  2。 Selection of Air Pipe Material


  The selection of air duct material also has a great influence on the construction quality of air duct. Generally speaking, in order to ensure the weight of the duct, the minimum thickness of the duct is needed, but in addition, the size and pressure level of the duct need to be considered comprehensively. From the design point of view, it is worth noting that there are several duct sheet thicknesses corresponding to different static pressure levels in a system at the same time.

极速时时彩官网  3、风管的横向连接

  3。 Horizontal connection of air duct

极速时时彩官网  风管的横向连接有一定讲究,这种连接方式可以说是是延续风管长度的一种手段,还具备增强刚度及保持风管精确地横向尺寸的作用。通常横向连接的方式是角钢法兰连接,这种连接方式取决于壁厚,更取决于连接种类及板壁加固方式。

  The horizontal connection of air duct is particular. It can be said that this connection is a means to extend the length of air duct. It also has the function of enhancing stiffness and keeping accurate lateral dimension of air duct. Usually the way of lateral connection is angle steel flange connection, which depends on the thickness of the wall, but also depends on the type of connection and the way of plate wall reinforcement.



  4. Longitudinal seam joint of air duct


  The longitudinal joint mode of air duct can be selected according to the actual situation. Button bite connection is often used in middle and low pressure air ducts. For rectangular air ducts, there is no pressure level for joint bite. Therefore, using buckle bite can save a flanging process. At present, buckle bite is used in most longitudinal seam joints of air ducts. Rivets, tapping screw, spot welding and indentation can be used to fasten the vertical seam and capping vertical seam.


  5. Storage of air ducts


  Prefabricated air ducts must be stored well to avoid secondary pollution。 The nozzle can be sealed with plastic cloth and other sealing materials, and then the air ducts can be stacked in different categories。 Before using the air duct, we should pay attention to thorough cleaning work to ensure that there is no corrosion on the surface of the sheet and no dust absorption after drying。


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