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High frequency welder device
The solid-state high frequency welder device is designed for the induction (contact) welding of steel pipes. The high-power capacitor bank C and the inductor L form 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.
1. DC powersupply cabinet
●The function of switch cabinet and rectification control are integrated here as a whole.
●Input line switch,input voltage indicating light. output current meter,and output voltmeter.
●3-phase thyrlstor rectifying bridge to achieve power adjustment of the HF welder.
2. Inverter output cabinet
●MOSFET single-Phase inverter bridges connected in parallel.
●The inverter bridge adopts drawer type design and the building block method to realize power superposition.
●Secondary resonance is used LC parallel resonance.
●The output arm offers required power transmission for pipe welding. Sealed equipment cabinet with air conditioner.
3. Central console
●Equipped with LCD screen, power adjustment, motor speed adjustment module, fully realize centralized control of welded pipe production line.
●Display and alarm device — DC voltage and current indication, armature voltage and current display of the DC speed control cabinet, excitation voltage and current display.
4. Cooling system
(1) Water-to-water heat exchanger
(2) Air-water cooling equipment
The rectifier transformer is the rectifier part of the equipment incoming line. The power supply voltage is reduced from 415V to 200V, which ensures the stable power supply of the equipment, and also plays a role in isolation of the power grid.