The installation of welded finned tubes must strictly follow the process specifications to ensure heat exchange efficiency and equipment safety. The core points are as follows:
1、 Pre installation inspection
1. Quality acceptance
Check the appearance of the finned tube for deformation, ensure that the fins are not loose or detached, and ensure that there are no pores or cracks in the welds. If necessary, perform radiographic testing.
Check whether the material certificates (such as 316L stainless steel and galvanized layer thickness of carbon steel) meet the corrosion resistance requirements of the working medium.
2. Environment and tool preparation
The installation environment should be dry and ventilated, avoiding corrosive gases; Tools include level gauges, torque wrenches, and specialized lifting equipment.
2、 Installation process control
1. Positioning and fixation
Levelness control: During installation, calibrate with a spirit level with a deviation of ≤ 2mm/m to avoid uneven flow of heat medium causing local overheating.
Support bearing capacity: The support spacing is ≤ 1.5m, and it needs to withstand 1.5 times the operating weight load. Large pipe groups need to be equipped with anti sway supports.
2. Pipeline system integration
Reduce the number of right angled bends in the pipeline layout, with a slope of ≥ 3 ‰ to facilitate exhaust; Install a Y-shaped filter at the inlet of the heat medium to prevent impurities from clogging.
When multiple tube groups are connected in parallel, the same program design is adopted to ensure balanced flow in each branch.