Product composition1500kw Solid State High Frequency Tube Welder
for ERW Tube Mill
LineDescriptionCompositionQty.GGP-1500/0.2-HC1500kW Solid state
high frequency welder(1 unit)Switching rectifying unit1Inverter
output unit1Control desk13-D full electric positioning
table1Water-water cooler1Air conditioner1Optical fiber
1 Product IntroductionSwitching rectifying unitThe integrated
design of the switch and the rectifier part, in addition to the
function of the switch cabinet, also has the rectifying control
function of the solid-state high frequency welder.1)
Installed 3-phase full-controlled thyristor rectification bridge to
realize power adjustment of the high frequency
welder.2) Installed flat-wave reactor, flat-wave
capacitor and filter to improve the flat-wave coefficient.3)
Protection reactor, ammeter, and current hall sensor are installed
to protect and monitor the inverter bridge.4) Siemens S7-1200 PLC
is installed to realize power logic control and Ethernet
communication functions. Inverter output unitThe
inverter output unit realizes the integrated design of resonant
inverter and series resonant tank circuit, with the advantages of
compact structure, high efficiency, convenient maintenance, low
failure rate, high efficiency and energy saving.The inverter part
is composed of MOSFET single-phase inverter bridges in parallel.
The inverter bridge is designed to be 100kW, which completes the
power superposition in a modular way.The matching transformer is
used to complete the power synthesis, with adopt of the secondary
low-voltage resonance and no welding transformer output mode. The
tank circuit resonant capacitor (low voltage) and steel tube Vee
type inductor resonate directly, to realize the power transmission
through the output of the induction welding unit.Use a sealed
cabinet and equipped with air conditioners installed on the top.
Control desk1) Adopt stainless steel operation penal with
beautiful appearance and easy to clean.2) Add touch screen
protection cover to improve the service life of touch screen.3) The
touch screen of the control desk has data recording function for
important parameters and information, which is convenient for
historical query. Meanwhile, it has visual data record, which is
convenient for analysis and viewing the status information of the
equipment.4) It has the functions of remote operation, power
regulation, state monitoring and fault diagnosis of HF welder.5)
Ethernet interface is reserved to facilitate the user's function
expansion and realize remote monitoring and information
collection.6) The function can be added and expanded according to
the actual needs of users. 3-D full electric
positioning tableIt is used to install the inverter output cabinet
and adjust the position of the contact head. Full electric
adjustment for front/back, left/right and up/down directions. The
transmission adopts an asynchronous AC motor, and the gearbox
adopts a worm gear structure. The drive motor is controlled by
inching, the adjustment is stable and reliable to ensure the work
coil in the best welding position. Water-water coolerThe
water-water cooler completes the cooling of heating components such
as the rectifying bridge, flat-wave reactor, inverter bridge, and
resonance tank circuit, and is designed with water temperature
indication and protection. Adopt water-water heat exchanger. The
characteristics are:Purified water circulates, the water quality is
clean without scale in pipelines, which greatly reduces the
operation faults of the equipment..Closed cycle circulation, no
impurities entering, no moss, the pipeline will not be
blocked.Small size, good integrity and convenient
installation.Closed water circulation with little water
consumption.It can avoid the malfunction caused by condensation
water in summer.Small size water storage tank, and antifreeze can
be used in winter to avoid water failure caused by freezing.It is
more economic than an air-water cooler.Adopt stainless steel water
tank and in-line pump. Optical fiberThe communication from
the switching rectifying unit to the inverter output unit adopts
optical fiber connection to ensure that the control system is not
interfered by high-frequency signals and improve the reliability of
the welder.Measures for high efficiency and energy saving1) PSM
technologyWith the latest PSM inverter control technology, when
welding steel pipes of different specifications, the welder can
ensure a constant DC voltage of 450V and output power continuously
adjusted. At this time, the welder has the highest grid side power
factor, the minimum input current and the best welding
efficiency.2) Integrated inverter bridgeAdopt the optimized
integrated inverter bridge with small stray loss.3) Welding
frequency optimizationWith optimal design of resonance tank
circuit, the frequency of the welder is 20% - 30% higher than the
original design and effectively improve the welding efficiency.4)
Welding process optimizationAccording
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