Welded Shell:
Typically composed of two parallel square or rectangular shells, the interior contains a series of parallel tube bundles or plates for heat transfer. This structure makes the heat exchanger highly compact and space-saving.
Plate Structure:
Channels are formed by welding adjacent plates together. The plates often feature chevron (herringbone) or other corrugated structures to enhance turbulence and improve heat transfer efficiency.
Detachable Design:
The shell of some square fully welded heat exchangers adopts a six-sided detachable structure. In case of plate blockage, the surrounding cover plates can be removed for cleaning, meeting the process requirements for both mechanical and chemical cleaning.
Performance Advantages
High Temperature & Pressure Resistance:
The welded structure completely eliminates the limitations of gasket sealing. It can withstand high pressures (typically above 4.0 MPa) and temperatures up to 800°C, making it suitable for harsh operating conditions.
High Heat Transfer Efficiency:
The corrugated plate design creates high turbulence in the channels. The heat transfer coefficient is 3 to 5 times that of shell-and-tube heat exchangers. For the same heat exchange capacity, the volume can be reduced by 30%-50%.
Strong Corrosion Resistance:
The all-metal welded structure avoids the aging issues associated with rubber gaskets. Special materials such as Hastelloy and 254SMO can be selected to handle corrosive media like acids and high-salt environments.
Low Maintenance Costs:
The gasket-free design eliminates the risk of leakage. The integral welded structure reduces vibration damage, resulting in a long maintenance cycle and low lifecycle costs.
Flexible Flow Channel Configuration:
Supports single/multi-pass and symmetric/asymmetric flow channel designs. It can adapt to various flow rate ratios (e.g., ranging from 1:1 to 6:1) and temperature difference requirements.
