通风工程中风管制作与安装需要注意的细节涵盖了多个方面，以下是根据公开发布的信息整理的一些关键要点：

　　The details that need to be paid attention to in the production and installation of air ducts in ventilation engineering cover multiple aspects. The following are some key points compiled based on publicly released information:

　　风管制作细节

　　Details of air duct production

　　材料选择：

　　Material selection:

　　风管材料应符合设计和国家产品标准的规定，如钢板或镀锌钢板的厚度需达到规定要求。

　　The material of the air duct should comply with the design and national product standards, such as the thickness of steel plates or galvanized steel plates meeting the specified requirements.

　　防火风管的本体、框架与固定材料、密封垫料必须为不燃材料，耐火等级需符合设计要求。

　　The body, frame, fixing materials, and sealing gasket of the fireproof air duct must be non combustible materials, and the fire resistance rating must meet the design requirements.

　　制作工艺：

　　Production process:

　　应采用咬口连接或铆接，避免焊接，以保证连接处的强度和密封性。

　　Biting or riveting should be used to avoid welding and ensure the strength and sealing of the connection.

　　风管板材拼接的咬口缝应错开，不得有十字型拼接缝，咬口缝需紧密、宽度一致。

　　The seams of the air duct panels should be staggered and there should be no cross shaped seams. The seams should be tight and of consistent width.

　　风管表面应平整，无明显扭曲与翘角，凹凸误差控制在规定范围内（如8mm以内）。

　　The surface of the air duct should be flat, without obvious distortion or warping, and the unevenness error should be controlled within the specified range (such as within 8mm).

　　对于尺寸较大的矩形风管或保温风管，以及长度超过一定限制的低、中、高压风管，应采取加固措施。

　　For large-sized rectangular ducts or insulated ducts, as well as low, medium, and high-pressure ducts with lengths exceeding certain limits, reinforcement measures should be taken.

　　法兰制作与连接：

　　Flange fabrication and connection:

　　法兰加工应采用模具法，以保证法兰的互换性和尺寸精度。

　　The flange processing should adopt the mold method to ensure the interchangeability and dimensional accuracy of the flange.

　　法兰平面度的允许偏差、矩形法兰两对角线之差以及螺孔间距等均需符合规定。

　　The allowable deviation of flange flatness, the difference between the two diagonals of rectangular flanges, and the spacing between screw holes must all comply with regulations.

　　风管与法兰连接时，翻边宽度需达到规定要求（如6mm以上），翻边应均匀平整且紧贴法兰。

　　When connecting the air duct to the flange, the flange width should meet the specified requirements (such as 6mm or more), and the flange should be evenly, smoothly, and tightly attached to the flange.

　　成品保护：

　　Finished product protection:

　　风管半成品、成品应整齐地放置在方木上，避免多层堆放导致变形。

　　The semi-finished and finished air ducts should be neatly placed on square wood to avoid deformation caused by multiple layers of stacking.

　　长时间堆放的风管成品应用塑料薄膜覆盖，以防止积灰和受潮。

　　Long term stacked finished air ducts should be covered with plastic film to prevent dust accumulation and moisture.

　　在搬运装卸过程中应轻拿轻放，避免损坏成品。

　　During the handling and loading process, handle with care to avoid damaging the finished product.

　　风管安装细节

　　Installation details of air duct

　　安装前准备：

　　Preparation before installation:

　　核对图纸与现场，确认能否按设计标高和位置进行安装。

　　Check the drawings with the site to confirm if installation can be carried out according to the design elevation and position.

　　清除风管内外杂物，并做好清洁和保护工作。

　　Clear the debris inside and outside the air duct, and do a good job of cleaning and protection.

　　支吊架安装：

　　Installation of supports and hangers:

　　支吊架应使用角钢等坚固材料制作，膨胀螺栓的位置应正确、牢固可靠。

　　The support and hanger should be made of sturdy materials such as angle steel, and the position of the expansion bolt should be correct, firm, and reliable.

　　支吊架的间距应根据风管尺寸和安装要求确定，并统一设定。

　　The spacing between supports and hangers should be determined according to the size of the air duct and installation requirements, and set uniformly.

　　支吊架不得设在风口、阀门、检查门及自控机构处，离风口或插接管的距离需符合规定。

　　Support hangers shall not be installed at air vents, valves, inspection doors, and self-control mechanisms, and the distance from air vents or plug-in pipes shall comply with regulations.

　　风管连接与安装：

　　Duct connection and installation:

　　风管接口的连接应严密、牢固，法兰间的垫片需符合系统功能要求。

　　The connection of the air duct interface should be tight and firm, and the gasket between the flanges should meet the functional requirements of the system.

　　风管安装时应确保中心线处于水平状态，每安装一段风管后都需进行水平测量。

　　When installing the air duct, it should be ensured that the centerline is in a horizontal state, and horizontal measurements should be taken after installing each section of the air duct.

　　当风管长度超过一定长度时（如20米），需设置防晃支架。

　　When the length of the air duct exceeds a certain length (such as 20 meters), anti sway brackets need to be installed.

　　特殊部位处理：

　　Special part treatment:

　　当风管需要穿过封闭的防火或防爆墙体或楼板时，应预先埋设管子或防护套管，并使用不燃且对人体无害的柔性材料进行封堵。

　　When air ducts need to pass through enclosed fire-resistant or explosion-proof walls or floors, pipes or protective sleeves should be pre buried and sealed with non combustible and harmless flexible materials.

　　防火排烟风管的支吊架必须单独设置，同时支管、管道式消声器、消声器弯头以及防火阀也必须单独设置支、吊架。

　　The supports and hangers for fire and smoke exhaust ducts must be separately installed, and the branch pipes, pipe type mufflers, muffler elbows, and fire dampers must also be separately supported and hung.

　　安装后检查与验收：

　　Inspection and acceptance after installation:

　　风管安装完成后，应按照系统压力等级进行严密性检验。

　　After the installation of the air duct is completed, a tightness test should be conducted according to the system pressure rating.

　　检查风管内部是否清洁无杂物，支吊架是否牢固可靠。

　　Check whether the interior of the air duct is clean and free of debris, and whether the supports and hangers are firm and reliable.

　　确认风管的位置、标高、走向是否符合设计要求。

　　Confirm whether the position, elevation, and direction of the air duct meet the design requirements.

　　其他注意事项

　　Other precautions

　　在整个制作与安装过程中，应严格遵守相关安全规范和操作规程，确保人员和设备的安全。

　　Throughout the entire production and installation process, relevant safety regulations and operating procedures should be strictly followed to ensure the safety of personnel and equipment.

　　对于特殊环境下的风管制作与安装（如高温、潮湿、腐蚀性等环境），需采取额外的防护措施和特殊要求。

　　For the production and installation of air ducts in special environments (such as high temperature, humidity, corrosive environments, etc.), additional protective measures and special requirements need to be taken.

　　风管制作与安装完成后，应及时进行记录和归档，以便后续维护和检修。

　　After the production and installation of air ducts are completed, they should be recorded and archived in a timely manner for subsequent maintenance and repair.

　　综上所述，通风工程中风管制作与安装需要注意的细节众多，涵盖了材料选择、制作工艺、成品保护、安装前准备、支吊架安装、风管连接与安装、特殊部位处理以及安装后检查与验收等多个方面。只有严格遵守相关规范和要求，才能确保风管制作与安装的质量和安全。

　　In summary, there are numerous details that need to be paid attention to in the production and installation of air ducts in ventilation engineering, including material selection, production process, finished product protection, pre installation preparation, support and hanger installation, air duct connection and installation, special part treatment, and post installation inspection and acceptance. Only by strictly adhering to relevant regulations and requirements can the quality and safety of air duct production and installation be ensured.

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