How to prevent vibration and noise during the installation of spiral duct fan
The vibration and noise generated during the installation of automatic spiral duct fan is a very difficult problem. Basically, it can be said that as long as the two problems are prevented in advance during the installation process, it is basically half the success. The prevention of vibration and noise of spiral duct equipment during installation mainly starts from the following aspects:
① During fan installation, vibration damping devices shall be set according to the design requirements or construction specifications.
② The fan and spiral air duct are connected by hose. The hose at the suction inlet of the fan shall be installed with appropriate tightness to avoid noise and vibration due to loose soft connection and reducing the area of inlet and outlet.
③ The spiral air duct shall be manufactured, installed and connected with components. The connection shall be tight without air leakage to avoid air leakage noise.
④ In order to prevent the spiral air duct from vibration, a fixed support shall be set at the corner of the spiral air duct of each system and the connection with the ventilator and air outlet.
Air leakage test of spiral air duct machinery after the installation of spiral air duct, the air leakage test shall be carried out. According to the specifications, the air leakage test of spiral air duct adopts the combination of light leakage legality and air leakage test quantitative detection. The light leakage method is suitable for the tightness test of medium and low pressure systems; Air leakage test is suitable for sampling inspection of medium pressure system and full inspection of high pressure system.