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Standard for selection and installation of fire smoke exhaust machine

Release Time：2021-07-20

Fire exhaust fan is generally selected centrifugal fan and axial fan two key forms, from the fire exhaust fan exhaust air volume, air pressure considering, fire exhaust fan is a centrifugal fan with high specific rotation efficiency, more appropriate use of axial fan.
There are two design schemes for the anti-fire smoke exhaust fan, one is the form of separating the motor from the main cyclone, and the other is that the motor is placed in the main cyclone. According to the difference of smoke temperature, different forms of fire smoke exhaust fan are selected. When the temperature exceeds 400 ℃, the form of separating the motor from the main cyclone is selected. The temperature of the fire smoke exhaust fan is lower than 400 ℃ and higher than 150 ℃, both forms of motors can be selected. When the temperature is lower than 150 ℃, the motor is selected to place the main cyclone.
The total flow rate of fire exhaust fans ranges from 7200M,/h to 110000M,/h, and there are different models and specifications. It is used to consider the requirements of different total flow rates of natural ventilation exhaust systems. Fire exhaust fans can be divided into two types according to different working pressure conditions. One type is axial flow fan fire exhaust fans, and the working pressure of each machine number is about 600Pa, and the other type is oblique flow fire exhaust fans, the working pressure of each fire exhaust fan is about 1000Pa.
In order to better consider the regulations of smoke exhaust system volume and ventilation, the fire exhaust fan is generally designed with a single-speed structure. The low-speed gear can be used for natural ventilation, and the high-speed gear can discharge dense smoke, which can not only save resources but also reduce noise pollution.
According to the requirements, fire-fighting smoke exhaust fans are widely used in daily life and various fields. Under normal circumstances, fire-fighting accidents usually happen suddenly, with no warning and fast diffusion rate. Therefore, it is very important to install them at the beginning. It is immediately related to whether the installed fire-fighting smoke exhaust fan machinery and equipment can reasonably have fire-fighting effects and cause the required actual effects. Therefore, the installation of fire exhaust fans has strict standards.
The fire exhaust fan should be set in the special type of fan room or outdoor flat roof, fan room should be selected fire resistance rating of not less than 2.0h partition wall and 1.5h concrete floor and fire door and other locations.
② When the standard is restricted, it can be set in a special indoor space. The frame structure around the indoor space should be non-ignitable body with fire resistance rating of not less than 1.0h, and the indoor space above 600Mm should be on both sides of the centrifugal fan.
Shandong Xingheng Environmental Technology Group Co., Ltd. is located in Luquantun Development Zone, Dezhou, Shandong, the hometown of FRP in China. The company has Grade II qualification for fire protection facilities engineering, Grade II qualification for construction mechanical and electrical installation engineering, Grade II qualification for environmental protection engineering, and safety production license. It is the first in the industry to pass ISO9001 quality management system certification, ISO14001 environmental management system certification, OHSAS18001 occupational health management system certification, and an axial fan invention patent, A fan utility model patent, environmental assessment, safety assessment, three simultaneous and other procedures are complete.