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Methods to prevent vibration and noise of galvanized air duct. Preventing vibration and noise is a key step in the whole installation process. Starting with the following aspects of noise prevention during galvanizing and air duct installation:

①風扇安裝時，應根據設計要求或施工規范設置減振裝置。

① When installing the fan, the vibration damping device shall be set according to the design requirements or construction specifications.

②風機和鍍鋅風管的聯接采用軟管聯接，風機吸入口處的軟管安裝應適度松緊，避免因軟接過松而降低進出風口面積而產生噪音和震動。防止鍍鋅風管震動和噪音的方法。

② The connection between the fan and the galvanized air duct adopts hose connection. The hose at the suction inlet of the fan shall be installed with appropriate tightness to avoid noise and vibration caused by reducing the area of the air inlet and outlet due to too loose soft connection. Methods to prevent vibration and noise of galvanized air duct.

③鍍鋅風管制造、安裝和與部件聯接，聯接嚴密，無漏風現象，避免漏風噪音。

③ Galvanized air duct shall be manufactured, installed and connected with components. The connection shall be tight without air leakage and avoid air leakage noise.

④為了防止鍍鋅風管震動，在各系統鍍鋅風管的轉彎處，與通風機和風口的連接處設置固定支架。鍍鋅風管漏風量測試鍍鋅風管安裝后，需要進行漏風量測試。根據規范，鍍鋅風管的漏風量測試采用漏光法定性和漏風量測試定量測試相結合的方式，適用于中低壓系統的嚴密性測試；漏風量測試適用于中壓系統的抽檢和高壓系統的全部檢測。防止鍍鋅風管震動和噪音的方法。

④ In order to prevent the vibration of galvanized air duct, a fixed support is set at the corner of galvanized air duct of each system and the connection with ventilator and air outlet. Air leakage test of galvanized air duct after the installation of galvanized air duct, air leakage test is required. According to the specification, the air leakage test of galvanized air duct adopts the combination of light leakage legality and air leakage quantitative test, which is suitable for the tightness test of medium and low voltage system; The air leakage test is applicable to the sampling inspection of medium voltage system and all inspection of high voltage system. Methods to prevent vibration and noise of galvanized air duct.