在通风空调系统工程中，吊架作为管道系统的核心支撑构件，其安装质量直接影响系统运行安全与使用寿命。本文从施工准备、操作要点、质量管控三个维度，解析通风管道吊架的规范化安装流程。

　　In ventilation and air conditioning system engineering, hangers serve as the core supporting components of piping systems, and their installation quality directly affects the safety and service life of the system operation. This article analyzes the standardized installation process of ventilation duct hangers from three dimensions: construction preparation, operational points, and quality control.

　　施工前准备：技术交底与材料验收

　　Preparation before construction: technical briefing and material acceptance

　　安装前需完成三维深化设计，将管道走向、吊架点位与建筑结构图叠加，通过BIM技术碰撞检测，避免与梁柱、管线冲突。技术人员需向施工班组进行专项交底，明确吊架规格、间距及特殊节点处理要求。材料进场验收时，重点关注角钢、槽钢的壁厚偏差，国标要求Q235B钢材壁厚允许偏差≤0.5mm，防腐涂层附着力需达1级标准。对于抗震支吊架，需核查C型槽钢内置齿牙深度是否≥2mm，这是保证抗震性能的关键指标。

　　Before installation, a 3D detailed design must be completed to overlay the pipeline direction, hanger points, and building structure diagram. BIM technology collision detection should be used to avoid conflicts with beams, columns, and pipelines. Technical personnel need to provide special instructions to the construction team, clarifying the specifications, spacing, and special node handling requirements of the hangers. When inspecting the materials upon arrival, special attention should be paid to the wall thickness deviation of angle steel and channel steel. The national standard requires that the allowable deviation of Q235B steel wall thickness should be ≤ 0.5mm, and the adhesion of the anti-corrosion coating should meet the Level 1 standard. For seismic supports and hangers, it is necessary to verify whether the depth of the teeth embedded in the C-shaped channel steel is ≥ 2mm, which is a key indicator to ensure seismic performance.

　　定位放线：精准确定安装基准

　　Positioning and laying out: accurately determining the installation benchmark

　　依据设计图纸，采用全站仪或红外线测距仪进行轴线投测，将控制点引测至楼板，误差控制在±3mm以内。吊架间距设置需遵循规范：水平矩形风管边长≤2000mm时，间距≤3m；圆形风管直径≥800mm时，间距≤2.5m。在穿楼板、变形缝等位置，需增设防晃支架，间距较常规缩短30%。某会展中心项目实践表明，采用弹簧秤校核膨胀螺栓拉拔力，当M12螺栓达5.6kN时方可进入下道工序，有效避免吊架脱落风险。

　　According to the design drawings, a total station or infrared rangefinder is used for axis projection, and the control points are measured to the floor slab with an error controlled within ± 3mm. The spacing between hangers should follow the specifications: when the side length of a horizontal rectangular air duct is ≤ 2000mm, the spacing should be ≤ 3m; when the diameter of a circular air duct is ≥ 800mm, the spacing should be ≤ 2.5m. Anti sway brackets should be added at locations such as through floor slabs and deformation joints, and the spacing should be reduced by 30% compared to conventional methods. The practice of a certain exhibition center project has shown that using a spring scale to verify the pulling force of expansion bolts, the next process can only be carried out when the M12 bolt reaches 5.6kN, effectively avoiding the risk of hanger detachment.

　　吊架制作：工艺控制与防腐处理

　　Hanger production: process control and anti-corrosion treatment

　　下料采用数控等离子切割机，切口毛刺高度≤0.3mm，组对间隙控制在0-1mm。焊接时，角钢搭接长度需≥2倍宽边，满焊高度不低于母材厚度0.8倍。某机电公司工艺标准显示，双拼槽钢吊架需设置缀板连接，缀板间距≤800mm，确保整体稳定性。防腐处理采用环氧富锌底漆+丙烯酸聚氨酯面漆体系，干膜厚度分别≥75μm、60μm，盐雾试验可耐受1000小时。

　　The cutting is carried out using a CNC plasma cutting machine, with a burr height of ≤ 0.3mm and a gap control of 0-1mm. During welding, the overlap length of the angle steel should be ≥ 2 times the width of the edge, and the full welding height should not be less than 0.8 times the thickness of the base metal. According to the process standards of a certain electromechanical company, double spliced channel steel hangers need to be connected with patch plates, with a spacing of ≤ 800mm between the patch plates to ensure overall stability. The anti-corrosion treatment adopts an epoxy zinc rich primer+acrylic polyurethane topcoat system, with dry film thicknesses of ≥ 75 μ m and 60 μ m respectively. The salt spray test can withstand 1000 hours.

　　安装固定：关键工序的质量控制

　　Installation and fixation: quality control of key processes

　　膨胀螺栓安装时，钻孔直径需比螺栓直径大4mm，深度误差≤5mm，清孔后注入锚固胶。对于混凝土强度≥C30的楼板，M16膨胀螺栓抗剪强度可达12kN。吊架垂直度偏差需控制在H/1000以内，使用磁力线坠检测。当管道与吊架间存在间隙时，需采用经防腐处理的木垫块填塞，厚度≥50mm，避免刚性接触产生冷桥。

　　When installing expansion bolts, the drilling diameter should be 4mm larger than the bolt diameter, with a depth error of ≤ 5mm. After cleaning the hole, anchor glue should be injected. For floor slabs with concrete strength ≥ C30, the shear strength of M16 expansion bolts can reach 12kN. The verticality deviation of the hanger should be controlled within H/1000, and magnetic line drop detection should be used. When there is a gap between the pipeline and the hanger, anti-corrosion treated wooden pads with a thickness of ≥ 50mm should be used to fill it to avoid rigid contact and cold bridges.

　　特殊场景处理：复杂工况的解决方案

　　Special scenario handling: solutions for complex working conditions

　　在斜屋面或曲面结构中，采用可调节球型支座，通过万向接头实现±15°角度补偿。对于并行管道，使用共架设计，主吊架采用41×41×4mm热镀锌槽钢，次管道通过U型管箍固定，间距≤1.5m。在穿防火墙位置，吊架需外扩300mm，并设置柔性阻燃套管，某数据中心项目验证，该措施可降低火灾蔓延风险85%。

　　In sloping roofs or curved structures, adjustable spherical supports are used to achieve ± 15 ° angle compensation through universal joints. For parallel pipelines, a common frame design is used, with the main hanger using 41 × 41 × 4mm hot-dip galvanized channel steel, and the secondary pipeline fixed with U-shaped pipe clamps with a spacing of ≤ 1.5m. At the location where the firewall passes through, the hanger needs to be expanded by 300mm and a flexible flame-retardant sleeve should be installed. A data center project has verified that this measure can reduce the risk of fire spread by 85%.

　　验收与维护：全周期管理要点

　　Acceptance and Maintenance: Key Points for Full Cycle Management

　　安装完成后，需进行三项检测：1. 荷载试验，加载1.5倍设计重量，持续2小时，变形量≤H/250；2. 防腐层检测，采用电火花检漏仪，1.5kV电压下无击穿；3. 抗震性能验证，模拟7度地震波，支架位移量＜50mm。运营期间，建议每半年检查吊架连接螺栓扭矩，M16螺栓预紧力需保持在80-100N·m，并补涂防锈漆。

　　After installation, three tests are required: 1 Load test, loading 1.5 times the design weight for 2 hours, deformation ≤ H/250; 2. Anti corrosion layer testing, using an electric spark leak detector, with no breakdown at 1.5kV voltage; 3. Seismic performance verification, simulating a 7-degree earthquake wave with a support displacement of less than 50mm. During operation, it is recommended to check the torque of the hanger connection bolts every six months, maintain the M16 bolt pre tightening force at 80-100N · m, and apply anti rust paint.

　　通风管道吊架安装需贯彻“精准定位、规范制作、严格验收”十二字方针，通过BIM技术、智能检测设备与新型连接件的协同应用，构建起从设计到运维的全生命周期质量保障体系，为建筑机电系统安全运行奠定坚实基础。

　　The installation of ventilation duct hangers should adhere to the twelve character policy of "precise positioning, standardized production, and strict acceptance". Through the collaborative application of BIM technology, intelligent detection equipment, and new connectors, a full life cycle quality assurance system from design to operation and maintenance should be established, laying a solid foundation for the safe operation of building electromechanical systems.

　　本文由济南通风管道友情奉献.更多有关的知识请点击:http://www.jntfgd.com真诚的态度.为您提供为全面的服务.更多有关的知识我们将会陆续向大家奉献.敬请期待.

　　This article is a friendly contribution from Shandong Ventilation Duct For more information, please click: http://www.jntfgd.com Sincere attitude To provide you with comprehensive services We will gradually contribute more relevant knowledge to everyone Coming soon.