涩老板在线免费视频_午夜成人精品_神马理论午夜,,_亚洲有薄码区久久欧美精品一区_97人人色_神马在线精品_成人熟女一区二区_亚洲二区三区四区_人妻午夜免费_大鸡巴猛男爆操骚逼国产一区二区_丁香婷婷久久一区二区三区_岛国内射美女_亚洲一级电影,亚洲欧美日韩国产最新版,亚洲五月综合缴情综合久久本,少妇色情喷水又紧又爽小说,巜上司的少妇的滋味,国产精品三级女人国产香蕉,亚洲最好的免费电影,欧美亚洲国产成人精品,国产永久一区二区三区,亚洲综合一区无码精品,歳の熟女セックス,内射带小孩熟妇,果冻传媒在线看免费视频观看,成人欧美一区二区三区片,亚洲 片内射欧美美妇,一本无码人妻在中文字幕免费,亚洲无毛视频,中文字幕丰满孑伦无码专区,亚洲爆乳无码专区色戒纶理,肉乳床欢无码片动漫软件,欧美日韩一区二区另类,久热只有精品在线直播,精品亚洲一区二区在线播放,精品国产乱码久久久久久影片,国产一级高清在线观看,国产精品福利在线一区,成人动漫下载,乱伦性爱视频,xo无码AV毛,国产黄A片免费网站免费,日韩欧美一级特黄特色大片

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.