Description
Full set of pipe
welding machine composition:
1. Switchgear rectifying cabinet
Designed with integration of switchgear cabinet and rectifying
part, besides achieving switchgear cabinet functions, it also has
rectifying control functions of solid state H.F. welders.
A. Installed line-in switch, line-in current meter, voltage
meter (can be switched) and line-in voltage indication lamp;
B.Installed *-phase full-controlled thyristor rectification
bridge to realize power adjustment of the HF welder;
C.Installed flat-wave reactor, flat-wave capacitor and filter
to improve the flat-wave coefficient.
2. Inverter output cabinet
The inverter part is consisted of MOSFET single-phase inverter
bridge connected in parallel. The power of single-phase bridge is
*0kW; the inverter bridge adopts the building block method to
realize power superposition. Every piece of bridge plates is
designed in the shape of a drawer, which is very easy to install
and repair;
The matching transformer is adopted for power combination,
also it adopts the output method by of secondary resonance and
non-welding transformer, tank circuit resonance capacitor (low
voltage) resonates with the inductor directly, and the output pole
plate offers required power transmission for pipe welding;
Adopted sealed equipment case, installed with air
conditioner.
3. Connecting optical fiber
The switchgear rectifying cabinet and the inverter output
cabinet are connected with optical fiber, so as to make sure
control system can not be disturbed by HF signal, which enhances
the reliability of equipment.
4. Circulation soft water cooling system
Circulation soft water is used as cooling water with
temperature and water level indicator and protection, which can
perfectly accomplish the cooling work for rectifying cabinet,
inverter cabinet and resonance tank circuit. air/water cooling
system are optional.
5. Central operation console
It realizes solid state H.F. welder remote operation and power
regulation, installed with LCD which indicates armature voltage,
field voltage indication and of DC drive and DC voltage, DC current
indication of H.F. welders.
6. Mechanical adjustment device
Applied to install inverter output cabinet and adjust inductor
position.
*-D is for induction welding mode;
*-D is for contact welding mode.
