通風管道系統工程風管及部件安裝

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1、風管及部件安裝前，內外雜物及污垢并保持清潔。安裝風管時，為安裝方便，在條件允許的情況下，盡量在地面上進行連接，一般接10～12m長左右。

1. Before the installation of air ducts and components, remove internal and external sundries and dirt and keep them clean. When installing the air duct, in order to facilitate installation, try to connect it on the ground if conditions permit, and generally connect it to about 10 ~ 12m long.

2、風管法蘭墊料按系統進行選用。空調、通風風管采用厚度為3mm的8501密封膠帶密封，排煙系統風管采用石棉橡膠板作為法蘭墊料。

2. The air duct flange gasket shall be selected according to the system. The air conditioning and ventilation ducts are sealed with 8501 sealing tape with a thickness of 3mm, and the air duct of the smoke exhaust system uses asbestos rubber plate as flange gasket.

3、法蘭墊片厚度為3～5mm，墊片要與法蘭齊平，不得凸入管內，以免增大空氣流動阻力，減少風管的有效面積。

3. The thickness of flange gasket shall be 3 ~ 5mm. The gasket shall be flush with the flange and shall not protrude into the pipe, so as not to increase the air flow resistance and reduce the effective area of the air duct.

4、緊固法蘭螺栓時，用力要均勻，螺母方向一致。風管立管法蘭穿螺栓，要從上往下穿，以保護螺紋不被水泥砂漿等破壞。

4. When tightening flange bolts, the force shall be uniform and the direction of nuts shall be consistent. The air duct riser flange shall be threaded from top to bottom to protect the thread from being damaged by cement mortar.

5、穿出屋面的風管設置防雨罩；穿出屋面1.5m的立管必須可靠固定、完好無損，不得出現裂紋、咬口不嚴密以及空洞等缺陷，以免雨水從風管內漏入室內。風管在穿越墻體、樓板時，四周縫隙用防火柔性材料密實填充。

5. The air duct passing through the roof shall be provided with rain cover; The riser 1.5m out of the roof must be reliably fixed and intact, and there shall be no defects such as cracks, loose bite and holes, so as to prevent rainwater from leaking into the room from the air duct. When the air duct passes through the wall and floor, the surrounding gaps shall be densely filled with fireproof flexible materials.

6、穿越沉降縫風管之間連接及風管與設備連接的柔性短管采用外刷防火漆的帆布制作。在風管與設備連接柔性短管前，風管與設備接口必須已經對正，不得用柔性軟管來作變徑、偏心。安裝柔性短管時應注意松緊要適當，不得扭曲。空調支管風口之間的連接采用帶保溫層的金屬軟管，軟管與風口及與風管接口采用專用的卡箍進行連接。軟管較長時，必須在中間部位設置吊架，但金屬軟管的長度不得超過2米。

6. The flexible short pipes connecting the air ducts passing through the settlement joint and connecting the air ducts with the equipment shall be made of canvas coated with fireproof paint. Before connecting the flexible short pipe between the air duct and the equipment, the interface between the air duct and the equipment must be aligned, and the flexible hose shall not be used for reducing and eccentricity. When installing the flexible short pipe, pay attention to the proper tightness without distortion. The connection between the air conditioning branch pipe and the air outlet adopts the metal hose with thermal insulation layer, and the hose is connected with the air outlet and the interface with the air duct with special clamps. When the hose is long, a hanger must be set in the middle, but the length of the metal hose shall not exceed 2m.

7、風管與配件可拆卸的接口及調節機構等，不得裝設在墻或樓板內。

7. The detachable interface and regulating mechanism of air duct and accessories shall not be installed in the wall or floor.

8、在安裝防火閥前，拆除易熔片。待閥體安裝后，檢查其彈簧及傳動機構是否完好并安裝易熔片。防火閥、消音器按正確的方向安裝且單獨設置支吊架。

8. Remove the fusible sheet before installing the fire damper. After the valve body is installed, check whether the spring and transmission mechanism are intact and install the fusible sheet. Fire dampers and silencers shall be installed in the correct direction, and supports and hangers shall be set separately.

9、安裝調節閥、防火閥等可調節配件時，將操作手柄設置在便于操作的部位。所有的送風管道及新風管道三通處均設置三通拉桿閥。

9. When installing adjustable accessories such as regulating valve and fire damper, set the operating handle at the position convenient for operation. Three way pull rod valve shall be set at the tee of all air supply pipes and fresh air pipes.