铁皮风管质量控制要点

发布人：http://www.sftfgd.com   发布时间：2022-07-22 15:15:44

1、风管内严禁有杂物或其它管线穿越，并做好清洁和保护工作；

1. Sundries or other pipelines are strictly prohibited to cross the air duct, and cleaning and protection work shall be done well;

2、支吊架下沿和外缘与接触网带电体(含承力索,下馈线等)间距保持大于230mm,并应严格按照限界要求实施；

2. The safety distance between the lower edge and outer edge of the support and hanger and the electrified body of the overhead contact system (including messenger wire, lower feeder, etc.) shall be greater than 230mm, and shall be implemented in strict accordance with the clearance requirements;

3、连接螺栓应为镀锌螺栓，同时需要配备相应的平垫、弹垫和螺母；

3. Connecting bolts shall be galvanized bolts, and corresponding flat washers, spring washers and nuts shall be equipped;

4、风管法兰垫片的工作温度不小于70℃；对于排烟风管法兰垫片的工作温度要求不小于250℃；

4. The working temperature of the air duct flange gasket shall not be less than 70 ℃; The working temperature of flange gasket of smoke exhaust air duct shall not be less than 250 ℃;

5、风管安装的水平度允许偏差每米不应大于3mm，总偏差不应大于20mm；垂直安装垂直度的允许偏差为每米不超过2mm，总偏差不应大于20mm；

5. The allowable deviation of the levelness of the air duct installation shall not be greater than 3mm per meter, and the total deviation shall not be greater than 20mm; The allowable deviation of perpendicularity of vertical installation shall not exceed 2mm per meter, and the total deviation shall not be greater than 20mm;

6、风管在穿过墙体或楼板处不得设置接口，风管沿墙体或楼板安装时，距离墙面、楼板的间距应大于150mm；

6. No interface shall be set at the place where the air duct passes through the wall or floor. When the air duct is installed along the wall or floor, the distance from the wall and floor shall be greater than 150mm;

7、风阀的电动执行机构安装可靠固定，严禁随意放置在风管上；

7. The electric actuator of the air valve shall be installed reliably and firmly, and it is strictly forbidden to place it on the air duct at will;

8、手动密闭阀安装，阀门上标志的箭头方向需要与受冲击波方向一致；

8. For the installation of manual closed valve, the direction of arrow marked on the valve shall be consistent with the direction of shock wave;

9、现场风管接口的配置，不得缩小其有效截面；

9. The configuration of on-site air duct interface shall not reduce its effective section;

10、、空调风管支吊架应设不燃绝热垫防止产生冷桥，绝热垫应在支吊架制作时锚固在横担上；

10. The supports and hangers of air-conditioning ducts shall be equipped with incombustible insulation pads to prevent cold bridges. The insulation pads shall be anchored on the cross arms when the supports and hangers are manufactured;

11、对系统风管的检测，宜采用分段检测、汇总分析的方法。在严格安装质量管理的基础上，系统风管的检测以总管和干管为主。当采用漏光法检测系统的严密性时，低压系统风管以每10m接缝，漏光点不大于2处，且100m接缝平均不大于16处为合格；中压系统风管每10m接缝，漏光点不大于1处，且100m接缝平均不大于8处为合格。

11. The method of segmented detection and summary analysis should be adopted for the detection of system air duct. On the basis of strict installation quality management, the main pipe and main pipe are mainly inspected for the system air duct. When the light leakage method is used to detect the tightness of the system, the low-pressure system air duct is qualified with no more than 2 light leakage points per 10m joints, and no more than 16 light leakage points per 100m joints on average; If the light leakage point of the air duct of the medium pressure system is not more than 1 every 10m joint, and the average number of joints is not more than 8 every 100m, it is qualified.

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