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The application of fire valve product selection points

Release Time：2021-07-20

Smoke fire damper is mainly used for ventilation, air conditioning system on the duct, usually in the "normally open" state, when the air temperature reaches ~ zJ70oc, through the valve fuse action and automatically closed.
The smoke exhaust port and the smoke exhaust valve are mainly arranged on the pipeline of the smoke exhaust system, or installed at the suction inlet of the fire exhaust fan. It is usually closed. In the event of a fire, the smoke exhaust is automatically opened through linkage.
The fire damper is installed at the entrance of the fan used for both the smoke exhaust system and the ventilation and air conditioning system. It is usually in a "normally open" state and can be ventilated. When the flow temperature of the air fire damper in the pipeline reaches N280oC, the valve is automatically closed by the action of the fusible metal temperature fuse to cut off the air flow and prevent the spread of fire. In some building fire protection projects, these equipment are repeatedly used, such as Chongqing Yancao Building.
Chongqing Tobacco Building is mainly for office and business. The walkway is long and equipped with a mechanical smoke exhaust system. There is only one smoke prevention zone on each floor. An electric normally closed fire damper is designed on the smoke exhaust pipe on each floor, and an electric normally closed smoke exhaust valve is designed on each smoke exhaust port on each floor. An electric normally closed smoke exhaust valve is also designed at the suction entrance of the fire damper. Obviously, this design has functional waste, it is also a waste of modules, valves, and construction costs.
Suggestions: One of the methods is to cancel the smoke exhaust valve and module of the smoke exhaust port, and the air outlet is changed into a single-layer louver. The second method is to change the electric normally closed fire damper on the smoke exhaust main pipe on each layer into a normally open 280-degree closed fire damper, and the control module is changed into a general monitoring module. The two methods can also meet the requirements of fire protection specifications, and the actual control is also very reliable.
The fire damper is suitable for ventilation and air conditioning system. Except for the fire damper used in the kitchen fume exhaust system of public buildings, the operation temperature is 150 ℃, and the operation temperature of the fire damper used in the general ventilation and air conditioning system is 70 ℃. 3. The fire damper is suitable for the pipes of ventilation, air conditioning or smoke exhaust system. See Table 1 for the basic functions and scope of application, 4. When selecting a valve, you should pay attention to the function of the valve, such as normally open or normally closed, automatically closed to open, manually closed to open, manually reset, signal output, remote control and other requirements.
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.