1、濟(jì)南排煙罩支風(fēng)管制作時(shí)，按設(shè)計(jì)尺寸，在主風(fēng)管上切割支風(fēng)管的邊接口，與支風(fēng)口上下板連接的開口尺寸為支風(fēng)管內(nèi)壁尺寸加大6mm。與支風(fēng)管左右板連接處的開口尺寸為支風(fēng)管外壁尺寸，并在順風(fēng)方向設(shè)置45°導(dǎo)流角，導(dǎo)流角的長度不得小于支風(fēng)管寬度的1/2。

　　1. When making the air duct, according to the design size, the side interface of the air duct is cut on the main air pipe, and the opening dimension connected with the upper and lower plates of the air support is a supporting air pipe, and the inner wall dimension is increased by 6mm. The opening dimension at the connection of the left and the right plates of the branch pipe is the outer wall dimension of the branch duct, and the 45 DEG diversion angle is arranged in the downwind direction, and the length of the diversion angle shall not be less than 1/2 of the width of the draft pipe.

　　2、制作矩形彎管時(shí)，濟(jì)南通風(fēng)管道工程一般采用由若干塊小板拼成折線的方法制成內(nèi)外同心弧型彎管，與直風(fēng)管接連口制成錯(cuò)位連接形式。

　　2, make the rectangular pipe, commonly used by some methods into small plates made of concentric arc and line pipe and straight duct mouth made successive dislocation connection form.

　　3、制作三通(蝴蝶三通)時(shí)，根據(jù)圖紙尺寸，劃出兩平面板尺寸線，并切割下料。

　　3,. When making the three pass (Butterfly three pass), draw the two flat panel size according to the drawing size, and cut the material.

　　4、將支風(fēng)管和主風(fēng)管連接的上下板切割成梯階形，左右板不切梯階形。然后將支風(fēng)管插入主風(fēng)管內(nèi)，用專用膠粘接，然后捆扎帶固定，清理余膠，填充空隙，放在平整處固化。

　　4, the branch air pipe and air pipe connected on the plate is cut into Tijie shaped, ladder shaped cutting plate is not around. Then, the air duct is inserted into the main air duct, glued with a special adhesive, and then bundled with a belt to clean the remaining glue, fill the gap, and put it in the smooth place.

　　5、矩形風(fēng)管的變徑管，有單面偏心和雙面偏心兩種，制作變徑管單面變徑的夾角宜小于30°，雙面變徑的夾角宜小于60°。

　　5, the rectangular air duct's reducing tube has two sides, one side eccentric and 60 sided eccentric, and the angle of the reducing diameter of the one-way reducing pipe is less than 30 degrees, and the angle between the two sides of the reducing pipe is less than 10 degrees.

　　6、變經(jīng)風(fēng)管制作與直風(fēng)管制作方法相同，其中一面或三面風(fēng)管管板是斜面。變徑風(fēng)管的長度不得小于大頭長邊減去小頭長邊之差。

　　6. The manufacture of the warp air duct is the same as that of the direct air duct. One or three sides of the air duct plate are inclined. The length of the variable air pipe shall not be smaller than the long side of the big head and the difference between the long side and the small end.

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