How are the internal components of a stainless steel tower section installed and fixed?

The installation of stainless steel tower section internal components adopts a combination of modular pre-assembly and layered positioning. Tower tray-type internal components are fixed by support rings, with continuous fillet welds between the support rings and the tower wall (weld leg height not less than the thickness of the thinner component). Before installation, the levelness must be calibrated with a laser level (deviation ≤3mm/m). For the packing layer installation, grating plates must be laid first. The gap between the grating and the support beams is adjusted with wedge blocks. The upper and lower layers of packing are stacked at a 90° angle. Distributor-type internal components use a suspension structure with hangers made of the same material as the tower body. Length compensators eliminate thermal expansion differences, and the nozzle azimuth angle deviation does not exceed ±5°.

Controlling the gap between the internal components and the tower wall is crucial. Generally, a 5-10mm expansion gap is maintained, filled with ceramic fiber rope to prevent short circuits. Anti-loosening washers must be used at bolted connections, and molybdenum disulfide lubricant should be applied to the threads for easy maintenance and disassembly. When welding and fixing internal components, temporary reinforcement supports must be set up outside the tower to prevent welding deformation. After welding, the supports are removed and the surface is ground smooth. All internal components must have rounded edges (R≥3mm) to avoid stress concentration. After installation, an airflow distribution test must be performed, using the tracer gas method to verify the absence of flow dead zones. For high-pressure tower sections, an airtightness test at 1.1 times the design pressure must be conducted after internal component installation to check all sealing points.