通風管道合口銜接時要注意什么

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　　通風管道合口銜接時有哪些留意事項?

　　What precautions should be taken when joining ventilation ducts?

　　通風管道的合口銜接能否勝利是整個通風管道系統(tǒng)裝置勝利與否的關鍵，通風管道的合口銜接假如不合格，就會在使管道系統(tǒng)在運用過程中發(fā)作泄露的現(xiàn)象，因而，在停止通風管道的合口銜接時，我們一定要留意以下提到的留意事項。

　　The success of joint connection of ventilation duct is the key to the success of the whole ventilation duct system. If the joint connection of ventilation duct is not qualified, the leakage of the pipeline system will occur in the course of operation. Therefore, when stopping joint connection of ventilation duct, we must pay attention to the following points.

　　1、矩形風管直管段，不論是同一板材銜接，還是幾塊板材組合拼接，外表需平整、角線順直。組合前應肅清板材切口外表的切割粉末、灰塵及雜物。

　　1. The straight section of rectangular air duct, whether connected with the same plate or several plates, should be flat in appearance and straight in angle. The cutting powder, dust and debris on the surface of the incision should be removed before the combination.

　　2、管段組合后45度角切邊外部接縫，需貼鋁箔膠帶封合板材外殼面，每邊寬度不少于20mm.用角尺、鋼卷尺檢查調整垂直度及對角線偏向，并契合標準請求。

　　2. The outer seam of 45 degree angle trimming after pipe segment combination should be sealed with aluminium foil tape, each side width is not less than 20 mm. Verticality and diagonal deviation should be checked and adjusted with angle ruler and steel tape ruler, and conform to the standard requirements.

　　3、風管的圓弧面或折線面完成下料并折壓成型后，應與平面板預組合無誤后在涂刷粘合劑，以保證管件的幾何外形尺寸及觀感。

　　3. After cutting and folding the arc or folding surface of the air duct, it should be pre-assembled with the flat plate and then coated with adhesives to ensure the geometric shape, dimension and appearance of the pipe fittings.

　　4、銜接組合后的管段應垂直擺放定型前方可挪動。

　　4. After joining and assembling, the pipe section should be placed vertically in front of the finalization and can be moved.

　　5、鋁箔復合保溫風管所用粘合劑須按板材廠商認定的專用粘合劑，如另行采購粘合劑，必需做銜接效果比照實驗，并經監(jiān)理、板材商檢查、認可前方可運用。

　　5. The adhesives used for aluminium foil composite insulation ducts should be based on the special adhesives recognized by the plate manufacturers. If the brand adhesives are purchased separately, the comparative experiment of the bonding effect must be done. The adhesives can be used before they are inspected and approved by the supervisor, the sheet manufacturer.

　　6、粘結前須預組合，檢查接縫全部貼合無誤再涂刷粘合劑，粘合時間控制與時節(jié)、溫度及粘合劑性能有關。批量加工前應作榜樣實驗，肯定佳粘合時間。

　　6. Before bonding, it is necessary to pre-assemble, check all the seams are adhered correctly and then brush the adhesives. The control of bonding time is related to the time, temperature and properties of the adhesives. Model experiments should be done before batch processing to confirm the best bonding time.

　　我們在通風管道的合口銜接完成后，需留意對通風管道的合口銜接停止細致的檢查檢驗，以確保通風管道的合口銜接能否緊密緊合。

　　After the joint connection of the ventilation duct is completed, we should pay attention to stop careful inspection and inspection of the joint connection of the ventilation duct to ensure that the joint connection of the ventilation duct can be tightly closed.

　　通風管道在城市建筑中十分的重要，特別是它的裝置質量更是影響到空氣的交流，影響人們的正常的“活動”，影響人們的工作效率。

　　Ventilation pipeline is very important in urban buildings, especially its installation quality affects the air exchange, affects people's normal "activities" and affects people's work efficiency.

　　1、做好施工前的準備工作

　　1. Preparing for construction

　　俗話說“磨刀不誤砍柴工”，充沛的準備工作是確保風管裝置質量的前提。在準備凈化風管的制造時，無論是采取工廠集中制造還是現(xiàn)場制造方式，都必需保證場地的干凈和封鎖，并具有契合條件的采光和照明條件。除此外，還要對制造好的方管停止看守，盡量防止污染。

　　As the saying goes, "no mistake in cutting firewood by sharpening knives", abundant preparation is the premise to ensure the quality of air duct devices. When preparing for the manufacture of purified air ducts, it is necessary to ensure the cleanliness and blockade of the site, as well as lighting and lighting conditions in accordance with the conditions, whether by centralized factory manufacturing or on-site manufacturing. In addition, we should stop guarding the manufactured square tubes and try to prevent pollution.

　　2、風管材質的選擇

　　2. Selection of Air Pipe Material

　　風管材質的選擇，對風管的施工質量也有很大的影響。普通而言為了保證風管的重量，需采用小板厚的風管，但除此外還需求綜合思索風管的尺寸和壓力級別。從設計角度來看，值得留意的是一個系統(tǒng)能夠同時存在幾種對應于不同靜壓級別的風管板厚。

　　The selection of air duct material also has a great influence on the construction quality of air duct. Generally speaking, in order to ensure the weight of the duct, the minimum thickness of the duct is needed, but in addition, the size and pressure level of the duct need to be considered comprehensively. From the design point of view, it is worth noting that a system can have several duct sheet thicknesses corresponding to different static pressure levels at the same time.

　　3、風管的橫向銜接

　　3. Horizontal Connection of Air Pipes

　　風管的橫向銜接有一定考究，這種銜接方式能夠說是是持續(xù)風管長度的一種手腕，還具備加強剛度及堅持風管準確地橫向尺寸的作用。通常橫向銜接的方式是角鋼法蘭銜接，這種銜接方式取決于壁厚，更取決于銜接品種及板壁加固方式。

　　The horizontal connection of air duct has a certain degree of sophistication. This connection mode can be said to be a wrist for the continuous length of air duct. It also has the function of strengthening stiffness and insisting on the accurate lateral dimension of air duct. Generally, the lateral connection mode is angle steel flange connection, which depends on the thickness of the wall, but also depends on the type of connection and the way of plate wall reinforcement.

　　4、風管的縱向縫接合

　　4. Longitudinal seam joint of air duct

　　風管的縱向縫接合方式能夠依據實踐狀況，選擇對應的方式。在中、低壓風管中常常運用扣式咬口銜接，關于矩形風管，結合咬口運用無任何壓力級別，因而運用扣式咬口能夠儉省一道翻邊工序，目前大多數的風管縱向縫接合都采用了扣式咬口。關于立縫和封蓋式立縫能夠運用鉚釘、自攻螺絲、點焊、壓凸凹痕等辦法緊固。

　　The longitudinal joint mode of air duct can be selected according to the practice. Button bite joint is often used in middle and low pressure air ducts. For rectangular air ducts, there is no pressure level in combination with the bite. Therefore, the use of buckle bite can save a flanging process. At present, buckle bite is used in most longitudinal seam joints of air ducts. The vertical seam and capping vertical seam can be fastened by rivet, tapping screw, spot welding and indentation.

　　5、風管的寄存

　　5. Storage of air ducts

　　預制好的風管，是必需要做好寄存工作，以免遭到二次污染。可將管口用塑料布等密封資料封住，然后將風管分門別類堆放好。在運用風管前，要留意停止徹底的清洗工作，肯定板材外表無腐蝕，枯燥后不吸塵。

　　Prefabricated air ducts are necessary to do a good job of storage, in order to avoid secondary pollution. The nozzle can be sealed with sealing materials such as plastic cloth, and then the air ducts can be classified and stacked. Before using the air duct, pay attention to stop the thorough cleaning work. Make sure that there is no corrosion on the surface of the sheet and no dust absorption after dryness.