Shenyang ventilation pipeline It is a metal or non-metallic pipeline used for ventilation and air conditioning engineering of industrial and civil buildings. It is a municipal infrastructure to make air circulate and reduce the concentration of harmful gases. Ventilation duct Most of them are made by air duct processing equipment. However, due to various reasons, the processed air duct may have problems.
1、 Processing materials not up to standard
Performance: the surface of the plate is uneven, the thickness is uneven, and there are obvious indentation, cracks, sand holes, scabs and rust; The plane of the air duct sinks, and the side faces bulge outward, with obvious deformation.
Impact: The air duct leaks during operation, the air conditioning load increases, and the air life and performance are affected.
Cause: The material is unqualified and can not meet the requirements of air duct fabrication.
Measures: Before using the air duct processing equipment to make air ducts, check the factory certificate, material quality certificate and appearance thickness of materials to ensure that the materials are available.
2、 Inaccurate air duct warping angle and elbow angle
Performance: two opposite planes and two end faces of rectangular air duct are not parallel; The broken angle is not straight; Diagonal lines are not equal; The bite is not tight.
Impact: it will cause uneven force on the air duct connection, the installed air duct is not straight, the flange gasket is not tight, the system leaks air, resulting in air conditioning load loss and shortening the service life.
Cause: plate blanking and lofting are not accurate; The two air ducts are parallel, and the length and width of the sheet on the opposite side are not equal.
Measures: When blanking, the sheet shall be strictly angled, and the length, width and inspection diagonal of each sheet shall be controlled within the allowable range; After blanking, the two sheets on the opposite side of the air duct shall be overlapped to check the dimensional accuracy.
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