专注通风管道加工·排烟罩

Ventilation pipe processing scheme

材料验收

Material acceptance

所有的材料在施工前必须进行申报，经审批合格后方可施工。

All materials must be declared before construction and can be constructed after examination and approval.

所使用的材料具有出厂合格证、质量签定文件及说明书。

The materials used are factory certificate, quality sign document and instruction manual.

所使用的阀、风口等部件应检查调节装置是否灵活，油漆有无损伤。

The valve and tuyere should be checked whether the adjusting device is flexible and whether the paint is damaged or not.   通风管道加工

主要机具

Main machine tools

折边机、咬口机、手锤、电锤、手电钻、电焊机、扳手等小型工具。

Small tools such as folding machine, bite machine, hammer, electric hammer, electric drill, electric welding machine, wrench and so on.

作业条件

Operating conditions

本工程采用流水线做法进行加工，具体作业顺序如下：

The work of this project is carried out by pipelining.

风管制作

Wind pipe making

金属风管采用钢板制作通风管道，法兰采用型钢加工制作，预制时要注意能不能用错材料，对变径附件（如风口等）连接处应留下一段，待安装时再根据实际尺寸进行下料制作安装。避免返工，法兰制作时应成对进行，避免以后安装时螺栓孔对不齐。通风管道加工

Metal ducts are made of steel plates, flanges are made of profiled steel. When prefabricating, attention should be paid to the use of wrong materials. A section should be left at the connection of variable diameter accessories (such as tuyeres etc.) and then be made and installed according to the actual size. Avoid rework, flange production should be carried out in pairs, to avoid future installation bolt hole alignment.

根据风管的尺寸，选择不同的板材厚度，然后留足咬口余量、进行下料。

According to the size of the duct, choose different thickness of the board, then leave enough allowance for the blanking.

划线方法要严密，做到角直、线平、等分准确、经常检验结合尺寸，达到交圈严格、尺寸正确的目的。

The method of marking should be strict, so that the angle is straight, the line is even, the equal part is accurate, and the combined size is often checked, so as to achieve the goal of strict circle crossing and correct size.

剪切、倒角要正确，尽量减少误差，操作时避免接缝、翻边处重叠。通风管道加工

Cut and chamfer should be correct, minimize error, avoid overlap between joints and flanges.

制作风管及部件时尽量采用咬口连接，因为咬口缝可以增加风管的强度。

Try to use bite connections when making air pipes and components, because the seam can increase the strength of the duct.

根据不同的板材厚度选择咬口的宽度和留量，咬口操作时，避免咬口不实，造成胀裂及半咬口现象。

Choose the width and quantity of bite according to the different thickness of plate. When bite is operated, avoid false bite, cause crack and half bite.

当风管边长过大，其管段在1.2米以上时应采取加固措施视具体情况采用角钢框加固、角钢加固大边，内壁设置加固肋条的办法加固。

When the side length of air duct is too long and the pipe section is over 1.2 meters, reinforcement measures should be adopted, such as angle steel frame reinforcement, angle steel reinforcement of large side, and internal wall reinforcement ribs. 通风管道加工

法兰选用角钢法兰组焊。切断时用型钢切割机加工，在钻床上钻孔后，放在焊接平台上焊接，以保证平直度。

Flange is welded with angle steel flange group. When cutting, it is processed by the section steel cutting machine. After drilling on the drilling machine, it is welded on the welding platform to ensure the flatness.

预制时将相邻风管进行编号，增加功效并减少施工过程中的返工。

During the prefabrication, the adjacent air pipes are numbered to increase efficiency and reduce rework during construction.

风管的规格，尺寸应符合设计要求，当外观质量达到折角平直、圆弧均匀，两端平行、无翘角，风管与法兰连接牢固翻边平整并紧贴法兰。风管加固牢靠、整齐，间距适宜，均匀对称。

The specifications and dimensions of the air duct should meet the design requirements. When the appearance quality reaches a straight angle, uniform arc, two ends parallel, no warping angle, air duct and flange connection firmly flanged flat and close to the flange. The reinforcement of the wind pipe is firm and orderly, and the spacing is suitable and symmetrical.

在安装风管前，障碍物已清理，地面无杂物的条件下进行施工。

Before installing the wind pipe, the obstacles are cleared up and the construction is carried out under the condition of no sundries on the ground.

检查现场结构预留孔洞的位置、尺寸是否符合图纸要求，有无遗漏现象，的孔洞应比风管实际尺寸每边大于100MM。通风管道加工

Check the location and dimension of the pre-reserved holes in the site structure to meet the requirements of the drawings. If there is any omission, the remaining holes should be larger than 100MM on each side of the duct.

作业地点要由相应的辅助设施，如梯子电源和防护装置消防器材等。

The place of operation should be provided by corresponding auxiliary facilities, such as ladder power supply, fire protection equipment and so on.

风管及部件安装

Installation of duct and components

确定标高、制作吊架，风管支吊架的制作安装按照《采暖通风设计选用手册》

Determine the elevation, make the hanger, air pipe support hanger manufacture and installation according to the "Heating and Ventilation Design Selection Manual"

风管支、吊架符合设计和规范规定。

The wind pipe supports and hangers conform to the design and regulation requirements.

支吊架间距

Hanger spacing  通风管道加工

圆形风管直径或矩形风管长边尺寸≤400mm，水平风管间距不大于4M，垂直风管间距不大于4M，少吊架数2付；

The diameter of circular or rectangular ducts is less than 400 mm, the distance between horizontal ducts is less than 4 M, the distance between vertical ducts is less than 4 M, and the minimum number of hangers is 2.

圆形风管直径或矩形风管长边尺寸＞400mm≤1000mm水平风管间距不大于3M，垂直风管间距不大于3.5M，少吊架数2付；

The horizontal air duct spacing of round or rectangular air duct diameter > 400 mm < 1000 mm is not more than 3 M, the vertical air duct spacing is not more than 3.5 M, and the minimum number of hangers is 2 pairs.

圆形风管直径或矩形风管长边尺寸＞1000mm水平风管间距不大于2M，垂直风管间距不大于2M，少吊架数2付；

Circular or rectangular duct diameter or rectangular duct long side size > 1000mm horizontal duct spacing is not more than 2M, vertical duct spacing is not more than 2M, the minimum number of hangers 2;

支吊架不得安装在风口、阀门、检查孔等处，以免防碍操作，吊架不得直接吊在法兰上。

The support hanger shall not be installed at the tuyere, valve, inspection hole, etc. to avoid hindering operation, and the hanger shall not be directly suspended in France.

保温风管的支吊架装置宜放在保温层外部，但不得损坏保温层，保温风管不能直接与支吊托架接触。

The support and hanger device of the heat preservation air pipe should be placed outside the heat preservation layer, but the heat preservation layer should not be damaged, and the heat preservation air pipe can not be directly contacted with the support and hanger bracket.通风管道加工

为保证法兰接口严密性，法兰之间有垫料，垫料采用8501密封胶带。排烟风管垫料采用石棉胶板等。

In order to ensure the tightness of flange joints, there are padding between flanges and 8501 sealing tapes. Asbestos and rubber sheets are used for the exhaust pipe.

法兰连接法：螺母应在同一侧，法兰如有破损应及时更换修理。

Flange connection method: the nut should be on the same side. If the flange is damaged, it should be replaced in time.

悬吊的风管与部件应设置防止摆动的固定点。

A fixed point to prevent swing should be installed in the suspended duct and components.

风管安装时法兰不能在墙内，应距离墙150MM以上，便于操作检修改装。

The flange should not be inside the wall when the duct is installed. It should be 150MM above the wall. It is convenient for operation, maintenance and modification.

风管的吊杆采用圆钢大边630MM以下采用φ8MM；大边1200MM以下采用圆钢φ10MM；大边大于1200MM以上采用φ12MM。

The hanger rod of the air duct is made of round steel below 630MM, round steel below 1200MM and round steel above 1200MM with 12MM.  通风管道加工

消声器、防火阀在安装时应单独设支、吊架，不使风管承受其重量，安装方向必须正确与风管或管件的法兰连接，保证严密、牢固。

Mufflers and fire-proof valves should be installed separately with support and hangers to prevent the air duct from bearing its weight. The installation direction must be correctly connected with the flange of the air duct or fittings to ensure tight and firm.

风管保温

Heat insulation of wind pipe

保温材料下料要正确，切面要平齐，在裁料时要使水平、垂直面搭接处以短边顶在大面上。

The insulation material should be cut correctly, the cutting surface should be even, and the horizontal and vertical surfaces should be overlapped at the top of the short side on the large surface.

粘接保温钉前要将风管上的尘土、油污擦净，将粘接剂分别涂抹在管壁和保温钉的粘接面上，稍后再将其粘上。

Before bonding the heat preservation nail, the dust and oil on the air duct should be wiped clean, and the adhesive should be applied on the pipe wall and the bonding surface of the heat preservation nail respectively, and then bonded on it later.  通风管道加工

保温钉粘上后应待12~24小时后再铺覆在水平面上。

After holding the heat retaining nails, they should be laid on the horizontal surface after 12~24 hours.

风管穿墙、楼板

Wind pipes through walls and floors

风管在穿墙及穿楼板时风管与墙体中间用岩棉填实。

The wind pipe is filled with rock wool in the middle of the wind pipe and the wall when passing through the wall and passing through the floor.  通风管道加工
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