Abstract:The converter is an important equipment for fire blowing, but the low-altitude pollution caused by it is a trouble in the industry. The water-cooled movable hood has completely solved the converter flue gas pollution, but the cooling performance impact mechanism has not been systematically studied. In order to deeply understand the influencing mechanism of the cooling performance of the water-cooled movable hood, the flow characteristics and heated surface temperature distribution in the water-cooled movable hood under different pipeline layouts were studied based on numerical simulation. The results show that the new pipeline layout can effectively improve the flow characteristics in the cooling chamber, reduce the number of vortices, increase the average velocity of cooling water, greatly improve the heat transfer performance of the water-cooled movable hood, reduce the number and area of high-temperature zones, and lower the temperature of the heated surface. Specifically, the number of main vortices was reduced from 9 to 2, the average velocity of cooling water increased from 0.1997 m/s to 0.2445 m/s, the pressure loss at the inlet and outlet decreased from 56092.68 Pa to 54513.59 Pa, the number of main high-temperature concentration areas decreased from 4 to 2, and the proportion of high-temperature areas above 400 K on the heated surface decreased from 57% to 41%, the average temperature of the heated surface decreased from 407.48 K to 393.70 K, the maximum temperature decreased from 550.05 K to 446.71 K.