Shenyang ventilation pipeline Precautions during installation
1. Internal sundries are not removed before the installation of air duct
Before the installation of the air duct, the internal and external sundries shall be removed, and the cleaning and finished products shall be well done. After the construction, the pipe orifice shall be blocked in time. If the sundries are not removed, the system resistance will increase, and the filter screen and pipeline will be blocked in serious cases.
2. The air duct system is not inspected and tested for light and air leakage as required after installation
The measurement of light leakage or air leakage is an inspection measure for the construction quality of ventilation and air conditioning. The inspection shall be carried out in strict accordance with the requirements and specifications. If the air duct system is not inspected and tested for light leakage and air leakage as required after installation, a large amount of air leakage may occur in the system, which will make the entire system and project project fail to meet the requirements for use, increase unnecessary rework and waste, and also waste energy.
3. The installation position of various air valves is not convenient for operation and maintenance
All kinds of air valves shall be installed at positions convenient for operation and maintenance, and access openings shall be set in the ceiling or hoistway.
4. The spacing between air duct supports and hangers is too large
The distance between the air duct supports and hangers is too large, which will cause the air duct deformation and affect the sensory effect; If the expansion bolt is used improperly, the weight of the air duct will exceed the bearing capacity of the lifting point, which may even cause the air duct to fall, resulting in construction safety hazards.
5. Air leakage occurs at the interface when the air duct system is connected by combined flange
The air leakage of the interface does not meet the quality standard, which will cause excessive air loss of the whole system, unable to meet the air volume requirements, and cause serious waste of energy.
6. No embedded parts are set at the connection between brick structure air duct and metal air duct, or the sealing gap is too large or the connection is not tight
7. Twisting of flexible short pipe and rectangular short pipe during installation
Twisted short pipes are easy to cause quality problems and affect the appearance, so special attention shall be paid during installation.
8. The flexible short pipe of smoke control system is made of combustible materials
The flexible stub pipe of smoke control system shall be made of incombustible materials, and shall be made of anti-corrosion, moisture-proof, air tight and mildew resistant flexible materials. Measures to prevent condensation shall be taken for air conditioning system; The materials used for the air conditioning purification system shall also have smooth inner walls and be not easy to produce dust.
9. The air duct system is not equipped with anti swing support
In the laboratory Ventilation duct During installation, when the length of horizontally suspended main and main air ducts exceeds 20m, fixed points to prevent swing shall be set, and each system shall not be less than 1. If not set, air duct movement and vibration will occur during system operation.
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