articledetails

Steel pipe induction heating equipment

Induction heating of steel pipe

Steel pipe induction heating equipment configuration

Steel pipes are heated online before sizing, using a combined straight-through induction furnace with three combined sections. Each combined section includes a medium-frequency power supply, a capacitor cabinet and two inductors. There is a conveyor roller between the inductors to make the steel pipe run at a certain speed. The system power supply adopts 3 12-pulse rectifier transformers. The whole set of equipment is controlled by a computer control system to meet the steel pipe heating requirements.

Steel pipe induction heating equipment

The cooling system of the 3 power supplies adopts a typhoon water cooler. Appendix: (see the figure for the configuration of the steel pipe online heating power supply capacitor water cooling equipment) The working pressure is 0.2~0.3Mpa; the working flow is 20M3/h. The calculated values ​​are as follows: The intermediate frequency power supply is 1500KW, the power supply heat generation coefficient per kilowatt is 0.09, the capacitor heat generation coefficient per kilowatt is 0.036, the function and heat unit conversion value is 860 kcal/h, the average inlet and outlet water temperature difference is 8℃, the specific heat capacity of water is 1 kcal/kg·℃×1000, and the density of water is 1000kg/M3.

Heat generation: 1500×(0.09+0.036)=189KW×860=162540 kcal/h 135450÷8÷1000=20M3/h Take 1.1～1.25 safety factor:
20×1.1=22M3/h
The heat taken away by the water volume of the water pump is: 22×8×1000=16700 kcal/h
Conclusion: 176000 kcal/h＞162540 kcal/h, so 1500KW power supply cooling water 25M3/h is sufficient for the cooling of induction heating equipment. The sensor cooling water uses clean circulating water: working flow 50T/h, working pressure 0.2～0.3Mpa

The power supply power is 1500KW, the heat generation coefficient of the sensor per kilowatt is 0.3, the function and heat unit conversion value is 860 kcal/h, the average inlet and outlet water temperature difference is 8℃, the specific heat capacity of water is 1 kcal/kg·℃×1000, and the density of water is 1 000kg/M3.