Preheating Device in Fitting Up Station

The Induction Heating System for Pipe Preheating is a specialized high-efficiency heating device developed by NAEC specifically for pipe automatic welding prefabrication. This system adopts the principle of medium-frequency induction heating and is designed for preheating, insulation, and post-heating of weld seams during pipe automatic welding. It is a dedicated and efficient equipment that improves the efficiency of pipe welding preheating and ensures welding quality. It is an ideal heating device for digitalization and automation of process pipeline welding. The system mainly consists of a medium-frequency induction heating power supply, heating extension cables, induction heating bands, temperature measurement extension cables, needle-type armored thermocouples, and infrared thermometers.

For preheating before fitting-up, because the pipes are stationary relative to the operating equipment during fitting-up, induction heating bands connected by induction cables are wrapped around the ends of the pipes to be fitted. In this setup, the induction heating cables are connected to the power supply via special protective aviation plugs and extension cables to form a circuit for heating the workpiece. The induction heating cables transfer energy to the heated workpiece through induction coupling, efficiently transmitting high-frequency current for heating operations. With the aviation plug connectors, the induction heater can be quickly connected to the power supply, facilitating the movement of the heater, improving equipment utilization, and reducing labor and time waste. In this system, considering the various specifications of pipes, the preheating of pipes with different specifications is achieved by wrapping heating cables around them, thus using one set of heating cables to meet the preheating requirements of pipes of different sizes, reducing investment while ensuring functionality.