Precautions when installing high temperature air ducts:
(1) When the air duct is connected with the fan, a soft joint should be added at the inlet and outlet, and the section size of the soft joint should be consistent with the inlet and outlet of the fan. The hose joint can generally be made of canvas, artificial leather and other materials, the length of the hose is not less than 200, the tightness is appropriate, and the flexible hose can buffer the vibration of the fan.
(2) When the air duct is connected with dust removal equipment, heating equipment, etc., it should be prefabricated and installed according to the actual survey drawing.
(3) When the air duct is installed, the air inlet and outlet should be opened when the air duct is prefabricated. To open the air outlet on the installed air duct, the interface should be tight.
(4) When conveying gas containing condensed water or high humidity, the horizontal pipeline should be set with a slope, and the drain pipe should be connected at a low point. During installation, there shall be no longitudinal joints at the bottom of the air duct, and the bottom joints shall be sealed.
(5) For steel plate air ducts that transport flammable and explosive gases, jumper wires should be installed at the air duct connection flanges and connected to the electrostatic grounding grid.
How to prevent corrosion of high temperature air ducts?
Necessity of anti-corrosion and heat preservation of ventilation ducts: when the air duct is transporting gas, the air duct should be derusted and treated with anti-rust paint, and the dust gas can be sprayed with an anti-damage protective layer. When the air duct transports high temperature gas or low temperature gas, the outer wall of the air duct should be insulated (cooled). When the ambient air humidity is high, the outer wall of the air duct should be treated with anti-corrosion and anti-rust treatment. The purpose of heat preservation of the high-temperature gas duct is to prevent the heat loss of the air in the duct (centralized air-conditioning system in winter), to prevent the tissue heat of waste heat steam or high-temperature gas from entering the space, to increase the indoor temperature, and to prevent people from being scalded by touching the air duct. In summer, the gas is often condensed. It should also be cooled.
Post time: Sep-21-2022