通风工程施工方法及要求

Construction methods and requirements of ventilation engineering

1、根据本工程的特点，场所应宽敞、明亮、洁净、地面平整。加工的基本机具设备和电源安全防护装置需齐全。 2、风管安装要安装部位的障碍物已清理、地面无妨碍施工的杂物的条件下进行。 3、设备在建筑物结构已做好、室内粗装修和内隔墙、地坪已做好的条件下安装，此时通风系统的干管亦安装好。

1. According to the characteristics of this project, the place should be spacious, bright, clean, and flat on the ground. The basic machine equipment and the power supply safety protection device are complete. 2. Air duct installation to install the position of the obstacles have been cleared, the ground does not hinder the construction of debris conditions. 3. The equipment is installed under the condition that the structure of the building has been completed, the interior roughly decorated and the interior partition wall and floor have been completed. At this time, the main pipe of the ventilation system is also installed.

（一）通风管道制作方法及要求

(1) the methods and requirements for the production of ventilated pipes

1、通风、空气调节工程所使用的主要材料、设备、成品半成品等均应有出厂合格证明书或质量鉴定文件。 2、通风工程必须按批准的设计图纸施工。 3、通风管道制作的尺寸应按图施工，均以内径为准，连接管应与阀体相吻合。 4、圆形弯管的弯曲半径和最少节数及矩形弯管的弯曲半径应按《建筑安装工程施工技术操作规程》中有关规定执行。 5、圆形风管的三通，其夹角为90º。 6、风管各管段的连接应采用可拆卸的形式。 7、风管厚度按标准。

1. Major materials, equipment and semi-finished products used in ventilation and air conditioning projects shall have factory certificates or quality appraisal documents. 2. Ventilation works must be constructed according to the approved design drawings. 3. The dimension of the ventilation pipe should be constructed according to the drawing, and the inner diameter should be taken as the standard. The connecting pipe should match the valve body. 4. The bending radius and the minimum number of knots and the bending radius of the rectangular bend pipe of the circular bend pipe shall be carried out in accordance with the relevant provisions of the Technical Operational Rules for Construction and Installation Engineering. 5, the three pass of the circular wind pipe, its angle is 90. 6, the connection of each pipe section of the wind pipe should be detachable. 7. The thickness of the wind pipe is according to the standard.

（二）通风管道及部件的安装方法及要求：

(two) installation methods and requirements of ventilated pipes and components:

1、风管和配件可拆卸的接口，不得装设在墙和走道楼板内。

1. The detachable interface of the wind pipe and accessories shall not be installed in the wall and the aisle floor.

2、支、吊、托架的预埋件或膨胀螺栓，位置应准确、牢固可靠，埋入部分不得油漆，并应支除油污。不保温支、吊、托架间距如无设计要求应遵照下列执行。 1）水平安装：风管直径或大边长小于400mm，间距<=4m；大于或等于400mm，则间距≤3m。 2）垂直安装：间距<=4m但每根立管的固定件应大于等于2个。

2. The embedded parts or expansion bolts of the supports, lifts and brackets shall be located accurately, firmly and reliably, and the embedded parts shall not be painted, and the oil stains shall be removed. If there is no design requirement, the distance between non thermal insulation support, crane and bracket should be implemented as follows. 1) Horizontal Installation: Air duct diameter or large side length less than 400 mm, spacing <=4 m; greater than or equal to 400 mm, spacing <3 M. 2) vertical installation: spacing <=4m, but the fixed parts of each riser should be greater than or equal to 2.

3）保温管应符合设计要求。

3) the insulation pipe should meet the design requirements.

4）支、吊、托架不得设置在风口、阀门、检视门外。吊架不得直接吊在法兰上，并在适当处设防止摆动的固定点。

4) branches, hangers and brackets shall not be installed outside the draught, valves, and inspection doors. The hanger shall not be hung directly on the flange, and a fixed point to prevent swing is set at the appropriate place.

5）防火阀、电动风阀等部件安装处必须单独设吊支架。

5) installation of fireproof valves, electric air valves and other components must be supported separately.