通風管道設備留神事項及平衡規(guī)劃要害

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一、通風管道設備程序：

1、 Ventilation duct equipment program:

（1）風管組裝：當風管較短時，可一次在地上組裝而成，當風管較長時，可視設備場所的狀況，在地上分段組裝。組裝時應盡量調(diào)整風道的中心度和水平度，避免風管歪曲或上下起波，左右擺龍，每段風道不宜逾越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 condition of the equipment location. During assembly, the centrality and levelness of the air duct should be adjusted as much as possible to avoid distortion or wave formation, left and right swinging, and each section of the air duct should not exceed 10 meters. During assembly, the gasket should be leveled, the flange bolts should be tightened evenly, and the nuts and caps should be facing in the same direction.

（2）風管就位：風管就位前應查看悉數(shù)支架的水乎度和標高、查看支架的健壯程度，風管就位可選用直接和吊具兩種辦法。對風管斷面較小，又方位較低的可選用人工就位辦法，只需搭設簡易腳手架即可。當風管斷面較大且管段較長時，可選用滑輪、倒鏈、大繩等辦法吊裝。世紀星介紹為了便于風道就位，一般多選用將風道吊在腳手架上，然后再將其抬放在風道支架上的辦法。腳手架應沿其風道長度方向搭設，高度和方位應適宜施工操作，吊裝次序應先干管后支、立管，吊起時，吊點應健壯，兩吊點應均勻受力。筆直風管可選用人工和大繩輔佐就位。調(diào)整風管確保筆直度要求。

(2) Air duct positioning: Before positioning the air duct, the water level and elevation of all supports should be checked, and the robustness 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 orientations, 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 hoisting. 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 orientation 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 robust, and the two lifting points should be evenly stressed. The straight air duct can be manually and with the assistance of a large rope in place. Adjust the air duct to ensure the required straightness.

（3）風道調(diào)直：就位在支架上的風道，應撥正方位，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.

二、通風管道在設備時的留神事項：

2、 Precautions for ventilation ducts during equipment installation:

（1）對運送易燃、易爆氣體的鋼板風道，在風道聯(lián)接法蘭處應設備跨接線，并與靜電接地網(wǎng)聯(lián)接。

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

（2）當風道與除塵設備、加熱設備等聯(lián)接前，應待設備設備結(jié)束后，按實踐測繪的圖紙進行預制和設備。

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

（3）風道設備時，進、出風日宜在風道預制時開出洞口，如需在設備結(jié)束的風道上現(xiàn)開風口，其接口處應緊密。

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

（4）當運送含凝聚水或含濕量較大的氣體時，其水平管道宜設有斜度，并在低點處接排水管。設備時風道底部不宜呈現(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 moisture content, the horizontal pipeline should have a slope and a drainage pipe should be connected at the low point. The bottom of the air duct should not have longitudinal joints during equipment operation, and sealing treatment should be carried out on the joints at the bottom.

（5）當風管與風機聯(lián)接時，應在進出風口處加軟接頭，其軟接頭的斷面規(guī)范應與風機進出風口共同。軟管接頭一般可選用帆布、人造革等資料，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蕩。

(5) When connecting the air duct to the fan, a soft joint should be added at the inlet and outlet, and the cross-sectional specification of the soft joint should be consistent with the inlet and outlet of the fan. The hose joint can generally use 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 oscillation of the fan.

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