Introduce the installation specifications and standards of each part of the ventilation duct

Fabric air duct ventilation ducts, fabric air duct ventilation ducts, ventilation duct manufacturers will give you a detailed introduction to the installation standard specifications for each part of the duct. 1. The installation of the air duct should meet the specifications. 1. Other pipes in the air duct shall not pass through; 2. The air duct system containing flammable and explosive gas or installed in flammable and explosive environments should be grounded. When passing through the living area or other auxiliary production rooms, it should be Keep hermetic, no ports. 3. The air duct whose conveying air temperature is above 80 degrees Celsius should be protected according to the design requirements. 4. The fixed cable of the outdoor riser is strictly prohibited to be pulled on the lightning rod or on the wire. 2. The installation of pipe components must meet the following requirements: 1. The installation of various pipe fittings and operating mechanisms should ensure their normal use function and easy operation; 2. When installing the oblique plate air valve, the valve plate must be upward Pull up; when installing horizontally, the valve plate should also be inserted in the direction of the airflow; 3. The installation direction of the check valve and the automatic exhaust valve should be correct. 4. The installation direction and position of fire dampers and smoke exhaust valves (ports) should be correct. The fire isolation valve is on both sides of the partition wall, and the distance from the wall surface shall not be greater than 200mm. 5. Manually install the sealing valve, the arrow on the valve must be consistent with the direction of the impact. 6. After the installation of the air duct system, the tightness inspection should be carried out according to the system category. The air leakage should meet the design requirements, and the air duct must be inspected or verified by manufacturability. Its strength and tightness requirements should meet the design or the following regulations: ① When the strength of the air duct meets the working pressure of 1.5 times, there will be no cracks in the joint; ② The allowable air leakage of the rectangular air duct should meet: low-pressure system air duct QL≤0.1056P0.65 Medium-pressure system air duct QM≤0.0352P0.65 High pressure In the formula of system air duct QH≤0.0117P0.65 QL, QM, QH——under the corresponding working pressure of the system air duct, the allowable air leakage per unit area of u200bu200bair duct per unit time [m3/(h m2)]; P— - Refers to the working pressure (Pa) of the air duct system. ③The allowable air leakage of low-pressure, medium-pressure annular metal ducts, composite ducts and non-metallic ducts in non-flange form shall be 50% of the specified value of rectangular ducts; ④The allowable air leakage of air ducts with brick and concrete structures It should not exceed 1.5 times the specified value of the rectangular low-pressure system air duct;

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