High-frequency welded spiral serrated fin tube
High-frequency welded spiral serrated fin tube is a high-efficiency heat exchange element that fixes the fin with a toothed structure on the base tube through a high-frequency welding process. It is widely used in petrochemical, electric power, metallurgy and other industrial fields. Its core advantage lies in significantly improving the heat exchange efficiency through a unique structural design. The following is a detailed description of key features and applications:
1. Serrated fin tube structure design and manufacturing process
Core components
Base tube: usually made of seamless steel pipe or stainless steel material, with high strength and corrosion resistance, ensuring stable operation under high temperature and high pressure environment.
Fin: welded on the surface of the base tube by high-frequency current, the spirally wound metal belt is pre-opened with a fine tooth structure to form an extended heat exchange surface.
Manufacturing process of spiral serrated fin tube
High-frequency welding: Use high-frequency current to instantly heat the molten metal belt and the surface of the base tube to form a metallurgical bond, ensuring no gap between the fin and the base tube and high mechanical strength.
Tooth processing:
The fin strip is partially cut before welding, and the teeth are naturally divided into a serrated structure after winding, which increases the heat exchange area and optimizes the fluid disturbance.
2. Performance advantages of high-frequency welded spiral serrated fin tubes
Efficient heat exchange
Increased surface area:
The serrated structure increases the heat exchange area by more than 30% compared with ordinary fin tubes, enhancing heat transfer.
Turbulence effect:
The gap between the teeth causes the fluid to generate eddy currents, reduces the thermal resistance layer, and improves the convective heat transfer efficiency (the convective heat transfer coefficient is increased by about 20%).
Durability and adaptability
High-frequency welding technology ensures that the fins are firmly bonded to the base tube, and can withstand high temperature (≤600℃), high pressure (≤35MPa) and corrosive environment for a long time.
Supports customization of fin height, spacing and serrated shape parameters to meet the needs of different industries.
3. Typical application areas of high-frequency welded spiral serrated fin tubes
Petrochemical industry:
Used in high-temperature and high-pressure processes such as crude oil heating and oil and gas recovery.
Electric Power:
Improve boiler waste heat recovery efficiency and reduce power generation energy consumption.
Refrigeration System:
Optimize condenser and evaporator performance and shorten refrigerant phase change time.
Pharmaceutical and Metallurgical:
Applied to material drying and cooling processes to ensure process stability.
4. Extended Technical Direction
Research on fluid dynamics optimization of spiral serrated high-frequency welded finned tubes and development of corrosion-resistant coatings for stainless steel serrated finned tubes is being promoted to meet more stringent industrial scenario requirements.
The serrated fin tube has achieved a double breakthrough in heat exchange efficiency and durability through high-frequency welding and toothed structure design, and is a key innovative component in the field of industrial heat exchange.