弯管

Tube bends are critical components in heat exchanger coils, manufactured through cold or hot bending processes to create specific angles and radii that optimize fluid flow paths. These components must maintain precise internal diameters, wall thickness consistency, and surface smoothness to minimize pressure drop and prevent fouling. The bending process involves careful calculation of springback, ovality control, and wall thinning to ensure mechanical strength while achieving required thermal performance in heat transfer applications.

Tube bends function by redirecting fluid flow through predetermined angles while maintaining cross-sectional integrity. The bending radius and angle are engineered to minimize turbulence, pressure loss, and stress concentration. In heat exchanger applications, proper bend geometry ensures uniform fluid distribution across coil sections, maximizes heat transfer surface area, and prevents dead zones where sediment or air could accumulate. The working principle combines fluid dynamics optimization with structural mechanics to withstand thermal expansion/contraction cycles and operational pressures.