Fitting up center preheating device
Preheating Device in Fitting Up Station
It is an exclusive and ideal device developed by NAEC for welding seam pre-heating, thermal insulation, post heating during welding. Adopt mid-frequency induction heating principle and it has the characters of high efficiency, good welding quality. The station is mainly consisted of mid-frequency induction heating power supply, extension cable for heating, induction heating band, extension cable for temperature measuring, noodle type armored thermocouple and infrared thermo-detector etc.
Regarding preheating before fitting up process, since fitting is relatively static to device during fitting up, use induction heating band connected with induction cable to twist around the to be fitted up joint, further to do heating process. The induction heating cable is connected with extension cable through protection type aerial plug, able to form a circuit with power supply. The induction heating cable can transfer the energy to heated work-piece through induction coupling and maximumly transfer high frequency current. Through aerial plug, it can realize fast connection between inductor and power supply, convenient for induction heater moving, improve equipment utilization rate and reduce labor and time waste. Adopted heating cable twisting method can satisfy the preheating requirement of pipe in different specifications, further to reduce investment cost with same function.
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