通風管道安裝程序及注意事項

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一、通風管道在安裝時的注意事項：

1、 Precautions for installing ventilation ducts:

（1）當風管與風機連接時，應在進出風口處加軟接頭，其軟接頭的斷面尺寸應與風機進出風口一致。軟管接頭一般可采用帆布、人造革等材料，軟管長度不宜小于200，松緊度應適宜，柔性軟管可緩沖風機的振動。

(1) When connecting the air duct to the fan, a soft joint should be added at the inlet and outlet, and the cross-sectional size of the soft joint should be consistent with the inlet and outlet of the fan. The hose joint can generally be made of materials such as canvas or synthetic leather. The length of the hose should not be less than 200, and the tightness should be appropriate. The flexible hose can buffer the vibration of the fan.

（2）當風道與除塵設備、加熱設備等連接前，應待設備安裝完畢后，按實際測繪的圖紙進行預制和安裝。

(2) Before connecting the air duct to dust removal equipment, heating equipment, etc., prefabrication and installation should be carried out according to the actual surveyed drawings after the equipment installation is completed.

（3）風道安裝時，進、出風日宜在風道預制時開出洞口，如需在安裝完畢的風道上現(xiàn)開風口，其接口處應嚴密。

(3) When installing the air duct, it is advisable to open openings during the prefabrication of the air duct for the inlet and outlet days. If it is necessary to open openings on the installed air duct, the interface should be tight.

（4）當輸送含凝結(jié)水或含濕量較大的氣體時，其水平管道宜設有坡度，并在低點處接排水管。安裝時風道底部不宜出現(xiàn)縱向接縫，對底部有接縫處應進行密封處理。

(4) When transporting gas containing condensed water or high humidity, the horizontal pipeline should have a slope and a drainage pipe should be connected at the low point. During installation, longitudinal joints should not appear at the bottom of the air duct, and sealing treatment should be applied to the joints at the bottom.

（5）對輸送易燃、易爆氣體的鋼板風道，在風道連接法蘭處應安裝跨接線，并與靜電接地網(wǎng)連接。

(5) For steel plate air ducts transporting flammable and explosive gases, jumper wires should be installed at the flange connection of the duct and connected to the electrostatic grounding grid.

二、通風管道安裝程序：

2、 Ventilation duct installation procedure:

（1）風管組裝：當風管較短時，可一次在地面組裝而成，當風管較長時，可視安裝場地的情況，在地面分段組裝。組裝時應盡量調(diào)整風道的中心度和水平度，避免風管扭曲或上下起波，左右擺龍，每段風道不宜超過10m.組裝時，墊片應墊平，法蘭螺栓應均勻擰緊，螺母帽均朝向同一方向。

(1) Air duct assembly: When the air duct is short, it can be assembled on the ground in one go. When the air duct is long, it can be assembled in segments on the ground depending on the installation site. During assembly, the centrality and levelness of the air duct should be adjusted as much as possible to avoid twisting or rippling of the duct. The length of each section of the air duct should not exceed 10 meters, and the gasket should be leveled. The flange bolts should be tightened evenly, and the nut caps should be facing in the same direction.

（2）風管就位：風管就位前應檢查全部支架的水乎度和標高、檢查支架的牢固程度，風管就位可采用直接和吊具兩種方法。對風管斷面較小，又位置較低的可采用人工就位方法，只需搭設簡易腳手架即可。當風管斷面較大且管段較長時，可采用滑輪、倒鏈、大繩等方法吊裝。世紀星介紹為了便于風道就位，一般多采用將風道吊在腳手架上，然后再將其抬放在風道支架上的方法。腳手架應沿其風道長度方向搭設，高度和位置應適合施工操作，吊裝順序應先干管后支、立管，吊起時，吊點應牢固，兩吊點應均勻受力。垂直風管可采用人工和大繩輔助就位。調(diào)整風管保證垂直度要求。

(2) Air duct positioning: Before positioning the air duct, all supports should be checked for water tightness and elevation, and the firmness of the supports should be checked. There are two methods for positioning the air duct: direct and lifting. For ducts with smaller cross-sections and lower positions, manual positioning can be used, which only requires the installation of simple scaffolding. When the cross-section of the air duct is large and the pipe section is long, methods such as pulleys, chain blocks, and large ropes can be used for lifting. Century Star introduces that in order to facilitate the positioning of the air duct, it is generally used to hang the air duct on a scaffold and then lift it onto the air duct bracket. Scaffolding should be erected along the length direction of its air duct, and the height and position should be suitable for construction operations. The lifting sequence should start with dry pipes and then support and stand pipes. When lifting, the lifting points should be firm, and the two lifting points should be evenly stressed. Vertical air ducts can be positioned with manual and rope assistance. Adjust the air duct to ensure verticality requirements.

（3）風道調(diào)直：就位在支架上的風道，應撥正位置，調(diào)整風道橫平豎直，然后再按圖集要求固定。

(3) Air duct straightening: The air duct placed on the bracket should be aligned, adjusted horizontally and vertically, and then fixed according to the requirements of the atlas.