通風(fēng)管道設(shè)備留神事項(xiàng)及平衡規(guī)劃要害

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一、通風(fēng)管道設(shè)備程序：

1、 Ventilation duct equipment program:

（1）風(fēng)管組裝：當(dāng)風(fēng)管較短時(shí)，可一次在地上組裝而成，當(dāng)風(fēng)管較長(zhǎng)時(shí)，可視設(shè)備場(chǎng)所的狀況，在地上分段組裝。組裝時(shí)應(yīng)盡量調(diào)整風(fēng)道的中心度和水平度，避免風(fēng)管歪曲或上下起波，左右擺龍，每段風(fēng)道不宜逾越10m.組裝時(shí)，墊片應(yīng)墊平，法蘭螺栓應(yīng)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(fēng)管就位：風(fēng)管就位前應(yīng)查看悉數(shù)支架的水乎度和標(biāo)高、查看支架的健壯程度，風(fēng)管就位可選用直接和吊具兩種辦法。對(duì)風(fēng)管斷面較小，又方位較低的可選用人工就位辦法，只需搭設(shè)簡(jiǎn)易腳手架即可。當(dāng)風(fēng)管斷面較大且管段較長(zhǎng)時(shí)，可選用滑輪、倒鏈、大繩等辦法吊裝。世紀(jì)星介紹為了便于風(fēng)道就位，一般多選用將風(fēng)道吊在腳手架上，然后再將其抬放在風(fēng)道支架上的辦法。腳手架應(yīng)沿其風(fēng)道長(zhǎng)度方向搭設(shè)，高度和方位應(yīng)適宜施工操作，吊裝次序應(yīng)先干管后支、立管，吊起時(shí)，吊點(diǎn)應(yīng)健壯，兩吊點(diǎn)應(yīng)均勻受力。筆直風(fēng)管可選用人工和大繩輔佐就位。調(diào)整風(fēng)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(fēng)道調(diào)直：就位在支架上的風(fēng)道，應(yīng)撥正方位，調(diào)整風(fēng)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(fēng)管道在設(shè)備時(shí)的留神事項(xiàng)：

2、 Precautions for ventilation ducts during equipment installation:

（1）對(duì)運(yùn)送易燃、易爆氣體的鋼板風(fēng)道，在風(fēng)道聯(lián)接法蘭處應(yīng)設(shè)備跨接線(xiàn)，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(dāng)風(fēng)道與除塵設(shè)備、加熱設(shè)備等聯(lián)接前，應(yīng)待設(shè)備設(shè)備結(jié)束后，按實(shí)踐測(cè)繪的圖紙進(jìn)行預(yù)制和設(shè)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(fēng)道設(shè)備時(shí)，進(jìn)、出風(fēng)日宜在風(fēng)道預(yù)制時(shí)開(kāi)出洞口，如需在設(shè)備結(jié)束的風(fēng)道上現(xiàn)開(kāi)風(fēng)口，其接口處應(yīng)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(dāng)運(yùn)送含凝聚水或含濕量較大的氣體時(shí)，其水平管道宜設(shè)有斜度，并在低點(diǎn)處接排水管。設(shè)備時(shí)風(fēng)道底部不宜呈現(xiàn)縱向接縫，對(duì)底部有接縫處應(yīng)進(jìn)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(dāng)風(fēng)管與風(fēng)機(jī)聯(lián)接時(shí)，應(yīng)在進(jìn)出風(fēng)口處加軟接頭，其軟接頭的斷面規(guī)范應(yīng)與風(fēng)機(jī)進(jìn)出風(fēng)口共同。軟管接頭一般可選用帆布、人造革等資料，軟管長(zhǎng)度不宜小于200，松緊度應(yīng)適宜，柔性軟管可緩沖風(fēng)機(jī)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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