Medium Frequency Seam Annealer for Tube Mill Line 500kw

• After-sales Service: Technical Support Online
• Warranty: One Year Warranty Period
• Type: Induction Heating Machine
• Certification: CE, ISO
• Rated DC Voltage: 500V
• Rated DC Current: 1200A
• Model NO.: GZP-500/1-HC
• Output Power: 600kw
• Working Frequency: F=1.5-2kHz
• Annealing Efficiency: η≥35%
• Working System: Continuous Working System
• Resonant Mode: Series Full Bridge Resonance
• Output Mode: Medium Frequency Transformer Output
• Line Incoming Cable: Each Phase Adopts 2 PCS of 300mm2 Copper Cable in
• Electrical Power Supply: 3-Phase 4-Wire System, 380V/50Hz
• Transport Package: Plywood Case with Dust Proof Bag
• Specification: 40HQ container
• Trademark: SANZHENG
• Origin: China
• HS Code: 8514400001
• Production Capacity: 30 Units/Year

Product Description

 

Product composition

Medium Frequency Seam Annealer for Tube Mill Line 500kw

Description	Composition	Qty.
Medium frequency seam annealer  for tube mill line (2 sets)	Rectifier cabinet	3
	Inverter resonant cabinet	3
	linear plane type inductor	3
	2-D positioning table	3
	water-water cooler	3
	Console (with HMI touch screen)	1
	infrared thermometer	1

Product Introduction

Rectifier cabinet

1) Rectify the power grid 3-phase power frequency power supply to stable 500V DC voltage and supply it to the inverter resonant cabinet.
2) The rectifier cabinet is equipped with multi-function digital meter.
3) Install 3-phase fully controlled thyristor rectifier bridge to realize power regulation.
4) Install smoothing reactance, smoothing capacitor and filter to improve smoothing coefficient.
5) Siemens S7 series PLC is installed to realize power logic control and Ethernet communication functions.

 

Inverter resonant cabinet

1) The optimized IGBT power unit box structure realizes excellent current sharing effect of multiple IGBT modules in parallel.
2) The power unit adopts the latest designed IGBT drive board with higher stability and reliability.
3) Adopt optimized matching transformer and busbar of tank circuit capacitor cabinet.
4) The matching transformer is redesigned and optimized.
5) The cabinet is equipped with a water-cooled condenser.
6) The cooling water pipes inside the cabinet are all designed in the way of rubber hose and hose clamp fastening.
 

 

Control desk

1)Adopt stainless steel operation penal, with beautiful appearance and easy to clean.
2)Add touch screen protective cover to improve the service life of touch screen.
3)Siemens S7 series PLC and 10'' colorful touch screen are used in the control desk, which can display accurately and intuitively and control one set M.F. power supply.
4) The touch screen of the control desk has data recording function for important parameters and information.
5) It has the functions of remote operation, power regulation, state monitoring and fault diagnosis for the seam annealer.
6) The control desk and the MF power supply adopt the Ethernet communication to form the distributed control.
7) The control desk can adopt temperature closed loop system.
8) It has the functions of automatic real-time temperature collection, recording and storage.
9) Ethernet interface is reserved to facilitate the user's function expansion and realize remote monitoring and information collection.

 

Water-water cooler

The 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:

1. Purified water circulates, the water quality is clean without scale in pipelines, which greatly reduces the operation faults of the equipment..
2. Closed cycle circulation, no impurities entering, no moss, the pipeline will not be blocked.
3. Small size, good integrity and convenient installation.
4. Closed water circulation with little water consumption.
5. It can avoid the malfunction caused by condensation water in summer.
6. Small size water storage tank, and antifreeze can be used in winter to avoid water failure caused by freezing.
7. It is more economic than an air-water cooler.
8. Adopt stainless steel water tank and in-line pump.

 

2-D positioning table

The positioning table is designed as a 2-D adjustment mode to support the inverter resonant cabinet and fixed the inductor.
1) The positioning table is installed with a forward and backward moving track perpendicular to the production line.
2) The hand wheel that moves back and forth is placed on one side of the inductor to adjust the weld center. It is flexible and labor-saving.
3) The large cylinder type fast lifting mechanism is adopted.
4) The upper/lower limit of the positioning table can be adjusted, and the limit switch can be adjusted according to the actual situation on site.
5) The positioning table is equipped with a counterweight to match the center of gravity of the inverter resonant cabinet and inductor at two positions with the center of the frame.

 

Plane type inductor

Adopt plane type inductor (with installation of high efficiency water cooling silicon steel sheet magnetic conductor) to realize the power transmission required by seam annealing. The distance from the inductor to the steel pipe shall be adjusted by the operator.
 

High precision infrared pyrometer

Accurately measure the annealing temperature of steel pipe welding seam, and form a temperature closed-loop control system together with PLC. Pyrometer is used for temperature control, with features of fast speed, accurate temperature control and flexible combination, etc.
 

 

Measures for high efficiency and energy saving

1. Inverter adopts 450A/1200V high-power IGBT module to form series inverter circuit.
2. The IGBT medium frequency annealing power supply adopts split type independent design of rectifier and inverter, i.e., the high-power rectifier is used to connect the inverter annealing power supply through the DC bus, and the power of each set of inverter annealing power supply can be independently adjustable. The whole annealing power supply structure is more compact, with high electrical efficiency, small the occupied area, and easy maintenance of equipment.
3. The rectifier and inverter tank circuit unit are connected by DC bus, instead of the connection of medium frequency water cooled cable with huge loss and greatly improves the efficiency of the whole equipment.
4. The output power regulation of each IGBT inverter tank circuit unit adopts the latest technology of inverter side power regulation - Frequency modulation and fixed angle inverter control technology, which makes the power output adjustment of power supply no longer rely on the conventional way of adjusting DC voltage, but through the control of IGBT inverter drive pulse to have a change, to realize the impedance matching in the whole steel pipe specification range.
5. In the range of 10~100% power regulation, DC voltage remains at the highest rated value (about 500V when the line incoming AC voltage is 380V, the maximum voltage depends on the AC incoming line voltage), so the M.F. seam annealing equipment has the highest power factor (0.95) and the smallest harmonic current almost in the full power range. The overall operation of the equipment is more stable and efficient, with the success rate of start-up of 100%.
6. The IGBT medium frequency annealing power supply adopts a new technology of FPGA rectifier control board and colorful touch screen. It cancels all the adjusting potentiometers and panel door operation buttons of the original rectifying system. All start/stop operation, power setting, parameter setting and parameter recording are realized by touch screen. It has the characteristics of simple, intuitive, accurate, convenient operation and flexible function change. The special parallel working mode of FPGA ensures that each unit module of the program runs independently. Because of its internal hard line logic, there is no problem of program going wrong, which enhances the stability of the control system.
7. Tank circuit unit and linear inductor are installed on adjustable mechanical positioning table to adjust the relative distance between the linear inductor and the seam, which is suitable for in-line annealing of various specifications of pipe.
8. IGBT medium frequency annealing power supply adopts the temperature + power loop control mode, which eliminates the interference of external factors such as grid voltage fluctuation and load fluctuation. In combination with PLC and high-precision infrared thermometer, it can realize the annealing temperature closed-loop control, precisely control the annealing temperature, and the annealing quality of steel pipe is excellent.
9. IGBT M.F. seam annealing equipment has perfect protection functions, such as DC over-voltage, over-current, abnormal inverter, driving fault, water temperature & pressure protection, etc. To ensure the equipment running more safely and reliably.

Company Profile

 

 

FAQ

Q1:Are you a trading company or Manufacturer?
A:We are manufacturer with independent research and development capability, supplying products to our clients all overthe world.

Q2. Manufacturing delivery time?
A:30 days since receiving of down payment.

Q3. How to solve the malfunction occurred during operation?
A:You can send the malfunction information to us by email, or leave message to us on WeChat or WhatsApp.

Q4. Whether the online commissioning or technical support will be available?
A:Yes, we can provide online guidance and technical support for commissioning through WeChat or WhatsApp.

Q5. Can you provide the onsite service if we needed?
A:Yes, we can provide the onsite service if you needed. The corresponding expenses will be borne by the customer.

Q6. Payment terms?
A:30% by T/T as down payment, 70% by T/T before shipment.