Ventilation pipe construction It is the general term of air supply, exhaust, dust removal and smoke exhaust system engineering. Its construction projects include the layout of pipes and the planning devices of motors and air conditioning equipment. To ensure overall Ventilation engineering The application role of "" in engineering planning and device link needs to sum up various elements and use relevant parameters to make reasonable planning.
Ventilation duct It is an important part of the ventilation system. The purpose of the ventilation duct system planning is to reasonably arrange the air flow. On the premise of ensuring the use effect, the structure, layout and size of the air duct should be reasonably confirmed, so that the initial investment and operating costs of the system can be summarized to a low level. Theoretically, the difference of resistance coefficient between the place where the air supply and exhaust pipes enter the civil engineering shaft with and without laminar flow plate can reach 10 times. From the actual inspection of a project, it is found that the similar air duct and tuyere of the same type of fan, when used for air supply, the air flow is 9780m3/h, when used for air exhaust, the air flow is 6560m3/h, and the distance reaches 22.7%. The smaller selection of tuyere is also an increase of system resistance, An element of air volume reduction.
According to the characteristic curve of the fan, it can be seen that the fan can operate under various air volumes. At a certain operating point of the characteristic curve, the air pressure of the fan is balanced with the pressure in the system, which confirms the air volume of the system.
During the construction of ventilation equipment foundation, the plane orientation, elevation and several dimensions shall be rechecked with the professional drawings in advance. During the structural construction, the air duct through the wall and floor shall be reserved according to the rechecked orientation, elevation and opening dimensions. During the construction, the professional construction personnel shall cooperate to resurvey, and the construction opening shall not be damaged due to large-area smashing of the floor and wall.
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