As for the construction, we pay great attention to it. Here is a brief introduction of the preparation before the construction.
In the design stage of a comparatively complex civil building, each type of work (HVAC, water supply and drainage, power supply and lighting, and processing of Jinan spiral duct) should first negotiate space separation and determine the elevation range of each type of pipeline. Normally, you must not go beyond the boundaries of your own rules. Consultation with other projects should be conducted when there is an individual pipeline crossing the boundary.
(1) When the duct is connected with the fan, a soft joint should be added at the inlet and outlet of the fan. The cross-sectional dimension of the soft joint should be the same as that of the inlet and outlet of the fan. The hose joint can generally use canvas, artificial leather and other information. The length of the hose of Jinan spiral duct should not be less than 200, the tightness should be suitable, and the flexible hose can cushion the vibration of the fan.
(2) Before connecting the air duct with the dust removal equipment and the heating equipment of Jinan spiral air duct, the prefabrication and installation shall be discontinued according to the theoretical mapping drawing after the installation of the equipment.
(3) When installing Jinan ventilation pipeline, the inlet and outlet should be opened when the duct is prefabricated. If the outlet is to be found in the duct after installation, the interface should be tight.
(4) When transporting gas with condensate water or high moisture content, the gradient of the pipeline should be set and the drainage pipe should be connected at the low point. When installing the spiral duct in Jinan, the longitudinal seam should not appear at the bottom of the duct, and the sealing treatment should be discontinued at the seam at the bottom.
(5) For steel plate air ducts transporting flammable and explosive gases, a cross connection shall be installed at the flange of the air duct connection and connected with the electrostatic grounding grid.
Local ventilation system can be divided into local air intake and local air exhaust. Both of them use local air flow to protect local working places from harmful pollutants and form a good air environment.
1) When the duct passes through the floor or partition wall of a building, a protective sleeve with a wall thickness of not less than 1.6 mm shall be installed, and a non-flammable flexible data blocking between the duct and the protective sleeve sleeve shall be adopted.
2) It is strictly forbidden to climb and lean on the duct directly when the duct is installed. When necessary, we should use two wooden board pads (about 1000mm * 2000mm) to increase the stress area, alternately travel, to ensure safety.
3) When the spiral air duct is installed along the wall or floor in Jinan, the distance between the spiral air duct and the wall or floor should be greater than 100 mm. The error of installation position and elevation of open air duct without ceiling should not be greater than 10 mm. The bolts of the flange connecting with the equipment should be tightened evenly, and the nuts should be on the same side.
The above content is organized and published by Shandong Ventilation Pipeline Processing Factory. More information can be consulted by clicking on our official website: http://www.jnqsg.com./