5T 2 simultaneous iron furnaces

1, equipment type:
This equipment is a power-saving type product, which uses a half-bridge series inverter intermediate frequency power supply (voltage resonance). When the electric furnace is cold, hot, half-filled or filled, the half-bridge series inverter can output rated power with a constant power factor of 0.98. It has the characteristics of fast melting speed, low energy consumption and stable and reliable operation. The equipment consists of a series resonant intermediate frequency power supply and two coreless steel shell induction melting furnaces and auxiliary equipment required for the normal operation of the system.
   A series resonant dual output power supply with two electric furnaces can work at the same time (commonly known as one to two), that is, the output power can be randomly distributed between the two furnace bodies, and the two furnace bodies can be simultaneously powered, one insulation , one smelt.
2, 12-pulse rectification inverter series 5T / 3500kw melting furnace main technical indicators
Melting furnace working mode:
1.1 One set of furnace body is smelted and the other set is spared. Power setting is 3500kw, melting time (5T molten iron to 1550 ®C) ≤ 55 minutes / furnace
1.2 A set of furnace body melting, a furnace body insulation (refining), melting power of 3200kw insulation power ≤ 3 00KW / furnace. In this state, the melting time (5 T iron water to 1 5 5 0 ℃) ≤ 60 minutes.
1.3 The two furnace bodies are simultaneously smelted and produced.
A, comprehensive indicators
Serial number project Indicator requirements
   1 Equipment form Medium frequency melting furnace
2 Equipment use Used for melting carbon steel, cast iron, aluminum, etc.
3 Rated Capacity 5T
4 Maximum capacity 5T + 1 0%
5 Operating temperature 15 5 0 ®C
6 Smelting material Cast steel, cast iron
7 Lower discharge mode Hydraulic : hydraulic control
9 Working noise <85 decibels
10 Furnace structure Steel shell
12 Melting rate 5T /h
13 Release temperature 1 5 5 0 ®C ¯20 ®C
14 Melting power consumption ≤ 55 0¯5% kW.h/t cast steel
≤ 5 0 0¯5% kW.h/t cast iron
15 Melting time 55 minutes / furnace
B. Electrical indicators :
Serial number project index
1 Power supply 3500kw / 6 phase 12 pulse 5T
2 Number of rectifiers 12 veins
3 Inverter SCR series inverter
4 Rated frequency 250 Hz
5 Line voltage 660 V
6 IF voltage 45 00V -4800V
7 Start success rate 100%
8 Power factor 0.9 8
C, with cooling system parameters
Serial number project index
1 Closed loop cooling tower ZXZ-N 320 T integrated layering tower two sets of 70T and 250T integrated layering
2 Cooling tower housing Galvanized or 304 stainless steel
3 Fan supporting motor 5.5 KW X 2
4 Spray pump 4 KW
5 Main circulation pump 22kw
6 Cooler 304 cooler
C, furnace index
Serial number project Indicator requirements
1 Furnace shell structure Steel shell
2 Furnace shell material 45 # steel
3 Thickened panel 20mm
4 Yoke material Z11-0. 23
5 Yoke coverage 8 5%
6 Yoke clamping Stainless steel 1Cr18Ni9
7 Yoke cooling method Double water cooling
8 Sensor copper tube material T2 pure copper 99.9
9 Inductor copper tube specifications Wall thickness ≥ 7
10 Sensor turns By design
 
11 Inductor insulation 3-way dipping paint, double-layer dressing, pressure resistance 8000V
Sensor winding Long and double winding, machine winding (not hand-wound)
Sensor winding Machine winding
Induction ring inner diameter 1140mm
Induction loop height 1550
12 waterway 8 in 8 out , water connection hose
13 Way out Come out
14 Water cooling ring material Copper tube
15 Furnace shell heat <75 ® C (except the furnace bottom and the furnace cover)
1 6 insulation The coil and the yoke are insulated by a double layer of mica board.
17 bolt Ordinary carbon steel bolts are grade 8.8. Other bolts stainless steel
18 Water connection hose Use non-flame retardant high insulation rubber tube
19 Water collector Stainless steel
D. Furnace material
1 Refractory clay GROUT 563A US-Tianjin Union Products
3 , series inverter IF power supply introduction:
Adopt series inverter frequency power supply 6 with pulse series inverter 12. Series III . Technical parameters required for rectifier transformer
model: ZS11- 3500 KVA/10KV / 660v
Rated Capacity: Se= 35000 kva
Primary voltage: U1=10000V¯5% 6- phase 12-pulse 50HZ
Primary current: I1= 202 A
Secondary voltage: U2= 380V
Secondary current: I2= 1530A X 2
Pressure regulation method: Three-speed manual non-excitation regulator
Connection group: D/d. -yn11
Impedance voltage: Z75o=6.5%
effectiveness: ≥ 97%
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