Solid state high frequency welding machine

The QGT-1 solid-state high-frequency welding machine is designed for straight seam induction (contact) welding of steel pipes. The high-power capacitor group C and the inductor coil L constitute a current-type parallel boost resonant circuit. This circuit is suitable for high-frequency welded pipes with low load impedance and does not require an output transformer, which not only improves efficiency, but also increases the reliability of the whole machine.

The DC power supply unit includes rectification, filtering and logic control sections.

Independent voltage and current display and control system-even in the case of problems in the center console, the welding machine can be controlled independently.

Low ripple filter-reduces AC line harmonics and DC ripple to ensure welding quality.

SCR power supply-using constant power output to ensure smooth welding quality

Rectifier circuit -6 phase pulse rectifier

Siemens PLC-easy control and diagnostics

Equipped with LCD screen, power adjustment, motor speed adjustment module, fully realize the centralized control of welded pipe production line.

Display and alarm devices-DC voltage and current indication, DC speed control cabinet armature voltage and current display, excitation voltage and current display

The inverter part is composed of MOSFET single inverter units in parallel. Each unit has self-diagnosis ability, which is convenient for installation and maintenance.

Smooth DC output-three-phase fully controlled thyristor rectifier bridge, flat wave reactance, flat wave capacitor, filtering to ensure a smooth DC output

Compact, closed circulation and built-in water cooling system

Automatic load matching system-to ensure the best welding efficiency so that the welding machine to the best frequency (± 1%) stable operation

Composition: plate heat exchanger, water tank, water pump and electrical control part

The use of closed circulation, the use of external water (ordinary water) cooling water (distilled water) cooling method, no scaling.

Heat exchanger fins-High heat dissipation efficiency and low operating cost. This configuration is recommended for high-power high-frequency equipment.

Stainless steel water pump and copper pipe-almost no pollution

Stainless steel water tank with level switch-easy to check water level

Rectifier transformer is the equipment into the line rectifier part. The power supply voltage is reduced from 415V to 200V, which ensures the stable power supply of the equipment and isolates the power grid.

 

The equipment shall be installed indoors with good grounding. The color of the grounding wire must be obviously different from that of the control line, and the grounding resistance shall be less than 4Ω.

The altitude shall not exceed 1000 meters, otherwise the rated value shall be lowered.

The ambient temperature shall not exceed 40 ℃ at the highest and -10 ℃ at the lowest.

The relative temperature of the air is not more than 85%.

The installation inclination is not more than 5 degrees.

No violent vibration, no conductive dust, no corrosive gases and explosive gases.

Installed in well ventilated places.