详情
1. Composition
The whole set of high frequency solid state welder is composed
of switch rectifying cabinet, inverter output cabinet, central
control console, mechanical adjusting equipment, water cooling
system and an air conditioner.
A. Switch Rectifying Cabinet
We integrate the switch gear cabinet part and rectifier part,
besides the functions of switch cabinet, this design also has
rectifying control functions on solid-state H. F.
Welders.
Install incoming disconnect switch, incoming current meter,
voltage meter(switchable)and incoming voltage indicating
light.
Install *-phase full-controllable thyristor rectifying bridge
to achieve power regulation of H. F. Welders.
Install flight wave reactor, flight capacitor and filter to
increase flight coefficient.
B. Invert output cabinet
The invert part is considered of MOSFET single phase invert
bridge in parallel style. Each bridge's design power is **0
KW/*0KW. We adopt building block mode to pile up power, it is very
convenient to install and maintain because every single bridge
board is designed as drawer structure consisted of
slideway.
We adopt matching transformer to realize power combination,
also we adopt sub-resonance, no-welding transformer output mode and
make resonance directly by tank resonance capacitor(low voltage)and
inductor to achieve steel pipe welding power transmission by output
lead.
Use sealed box and install overhead air
conditioning.
C. Central console
The console achieves remote control and power regulation of
solid-state H. F. Welder, installed with LCD; Also it has
indicators of armature voltage, field voltage on DC speed
regulation cabinet and indicators of DC voltage, DC current on
welder. Installation of power-speed closed loop control function is
optional. The console has design difference according to different
types and quantities of matching DC speed regulation
cabinet.
D. Mechanical adjusting equipment
*-D adjustable bracket: For induction welding mode, applied
with installation and adjustment of invert output cabinet, the
inductor position can be adjusted manually.
*-D adjustable bracket: For induction/contract welding mode,
applied with installation and adjustment of inverter output
cabinet, the inductor position can be adjusted by electric or
manual.
E. Circulation soft water cooling system (water-water
cooler)
The water -water cooling system is composed of heat exchanger
with the adoption of the special corrugated structure which makes
the soft water form sharp turbulent flow in order to strengthen
heat exchange. The system holds the advantage of compact design,
small area occupation, convenient dismounting and high efficiency
of heat exchange. Only with the ability of heat exchange but not
cooling, it is necessary to use external circulation system to
accomplish the heat exchange.
Characteristics:
1. Using high-power MOSFET, the equipment efficiency≥
*5%.
2. Using dual-loop PI regulator of voltage and current, the
power range is adjusted from ****0%.
3. Using the computer to control the voltage regulation, the
adjustment is stable with high precision and small harmonic wave
interference.
4. It has fault protection system with over-voltage,
over-current and lack phase
