Ventilation pipe construction Discussion on design, manufacture and installation

Ventilators are energy consuming equipment with large quantities and wide range. In order to save energy consumption of fans and reduce operating costs, we should pay attention to the optimization technology of ventilation and air conditioning system to reduce the system Ventilation duct Construction pressure drop and consumption saving, reasonable matching and optimized operation regulation. From the fan after-sales service site, the author found that before the owner identified the fan quality problem, to the fan use site investigation, the result was that a considerable part of the ventilation system design, manufacturing, installation was unreasonable, leading to the abnormal operation of the fan.

The performance of the fan fails to meet the design requirements, the vibration and noise exceed the standard, the blade breaks and other problems occur. After the ventilation system is properly modified, the fan operates normally. Therefore, whether the ventilation system is reasonable has a great impact on whether the fan can operate normally Ventilation engineering Put forward discussion opinions on common problems in design, manufacture and installation of ventilation duct of construction ventilation and air conditioning system. The rectangular air duct is manufactured in the factory and installed in a different place. It is recommended that the air duct be in the form of two Havs, which is assembled and formed at the construction site. Because the two Havs structure is easy to stack, it makes full use of the space of transport vehicles to save transport costs. Allowable deviation of outer diameter or side length of air duct: 2mm when it is less than or equal to 300mm; When it is greater than 300mm, it is 3mm. The allowable deviation of nozzle flatness is 2mm, and the difference between two diagonal lines of rectangular air duct shall not be greater than 3mm; The difference between any two orthogonal diameters of circular flange shall not be greater than 2mm. The actual size of the inner diameter of the T-shaped flange is 2mm larger than the basic size of the outer diameter of the round air duct, and the actual size of the inner side length of the rectangular flange is 2mm larger than the basic size of the outer side length of the rectangular air duct.

The article comes from the network, if you have any questions, please contact us!