The installation of hanger plays the role of supporting weight, balancing medium reaction, limiting displacement and preventing vibration. Therefore, it is necessary for the construction personnel to understand the installation of hangers in order to better complete the ventilation pipeline construction project,
Requirements for processing and installation of ventilation pipes:
(1) When the pipeline fan is installed with the shock absorption hanger, the fan and the shock absorption hanger are closely connected, firm and reliable; when the support trailer is used for installation, the fan and the shock absorber, support and bracket are closely connected, firm and reliable.
(2) The centrifugal fan is in close contact with the shock absorption pedestal, the bolts are tightened, and there is a locking device.
(3) The ventilation duct manufacturer told us that during the trial operation of the fan, the rotation direction of the impeller is correct. After running for no less than 2 hours, the temperature rise of the sliding bearing should not exceed 35 degrees, and the temperature should not exceed 70 degrees as far as possible; the temperature rise of the rolling bearing should not exceed 40 degrees, and the temperature should not exceed 80 degrees as far as possible.
At present, the common problems are that the combustion performance and fire resistance of the finished ventilation duct have not been tested by the relevant national departments, and the processing of Shandong ventilation duct, and the combustion performance and wall thickness of some ventilation duct materials do not meet the requirements.
1. The supports and hangers of fans, air conditioning units, fan panels and other equipment shall be designed with vibration isolators, and their varieties and specifications shall meet the requirements of design and product technical documents.
2. The air duct shall be installed vertically, the spacing shall not be more than 4m, and a single straight pipe shall have at least two fixed points.
3. The screw hole of the hanger shall be machined, the hanger rod shall be straight, and the thread shall be complete and smooth.
4. At least one anti sway support shall be set for horizontal suspended duct with length over 20m in Shandong ventilation duct.
5. The support and hanger should not be set at the air outlet, valve, inspection door and automatic control mechanism, and the distance from the air outlet or plug-in pipe should not be less than 200 mm.