The spiral air duct market is generally divided into three categories according to the material: galvanized spiral air duct, fabric air duct spiral air duct and composite spiral air duct. What precautions should be taken when installing the fabric duct spiral duct? Let's take a look at it with you. 2. In the fire-fighting exhaust pipe system, the airport and air valve must be selected from the national standard GB50243 for the thickness of the high-pressure system of non-fuel, improper use of civil flues and galvanized ventilation pipes. When the fire exhaust fan is installed on the roof, there should be certain maintenance measures. 3. The exposed power cord must be threaded, and the wire tube material should be combined with metal hose or capelli and duck neck equipment to make it bend. The fire fighting system and equipment lines must be fixed with special fixtures. In order to Avoid falls. 4. The spiral air duct and ventilation equipment of the fabric air duct are made of three fabric flame-retardant materials that are softly connected. All bolts request the same length. The three main bodies should be grounded, ventilation equipment, equipment and installations between dynamic loads should be equipped with shock absorption measures. 5. When the ventilation pipe needs to change direction, variable diameter, fork, or sink, box-type pipe fittings should not be used, but when necessary, the airflow distribution and static pressure box should be used, and the wind speed of the box-shaped section should not exceed 1.5m/s; duct pipe Between 5-10 times the pipe diameter is sensible, retractable metal pipes or non-metallic soft links should not exceed 2 meters in length, there should be no disintegration and dead corners during installation, pipe elbows and straight pipe lengths exceed 20m Add anti-impact frame to open room exhaust fan, plus or minus brackets. 6. The distance between the fire valve on both sides of the partition wall of the fire compartment and the wall should be no more than 20 cm, and the thickness of the metal pipe and the wall should be 2~3 mm. 7. Fire dampers are used for compressed air supply systems, usually 70° fire dampers and 280° exhaust fire dampers are used. When the air inlet and exhaust port of the smoke breeze system are vertical, the height shall not be less than 3 meters, and the distance between them shall not be less than 10 meters when they are installed. Fabric duct ventilation duct, ventilation duct manufacturer: The above is the introduction of installing the fabric duct spiral duct, I hope it can help you.
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