1. When processing and installing galvanized spiral air ducts for fans, vibration reduction devices should be installed according to design requirements or construction specifications.
2. The processing and installation of fans and galvanized spiral air ducts use hose connections. The hose at the fan suction port for galvanized spiral air duct processing and installation should be moderately tightened to avoid noise and vibration caused by loose soft connections and reduce the inlet and outlet area.
3. Produce galvanized spiral air ducts. Process and install galvanized spiral air ducts and connect them to components tightly, without air leakage, to avoid air leakage noise.
4. In order to prevent vibration during the processing and installation of galvanized spiral air ducts, a fixed bracket is set at the connection between the ventilation fan and the air outlet at the turning point of each system's galvanized spiral air duct processing and installation.
Galvanized spiral air duct processing and installation air leakage test: After the processing and installation of galvanized spiral air duct is completed, an air leakage test should be conducted. According to the specifications, the air leakage test for the processing and installation of galvanized spiral air ducts adopts a combination of light leakage method and quantitative air leakage test. The light leakage method is suitable for checking the tightness of the low-voltage system in the middle; The air leakage test is applicable to spot checks of medium voltage systems and comprehensive inspections of high voltage systems.
Galvanized spiral air duct processing and installation leak detection method is a method that uses the strong transmittance of light to small holes to qualitatively detect the tightness of the galvanized spiral air duct processing and installation system. The test method is to use a voltage of no more than 36 V and a power of 100W on a certain length of galvanized spiral air duct during processing and installation in a dark environment. The bulb with a protective cover is slowly moved from one end of the spiral duct to the other end. If the light outside the spiral tube can be observed during the experiment, it indicates that there is a leakage point in the spiral tube, and the leakage point of the spiral tube should be repaired.