Converter steam dome high/low water level automatic feedwater unit
A technology for automatic water supply and steelmaking converters, applied in the direction of manufacturing converters, etc., can solve the problems of not adapting to safety production and modern management requirements, difficult to guarantee automatic control accuracy, asynchronous and other problems, achieving easy popularization and promotion, simple principle system, social good effect
Inactive Publication Date: 2007-01-17
SHOUGANG CORPORATION
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Problems solved by technology
However, regardless of the degree of automation of these four water supply methods, the common problems are: the predetermined water supply program and the control method of the drum water level cannot be adapted to each furnace in the steelmaking and blowing process, and the reason why the automatic control accuracy is difficult to guarantee, The water level change of the steam drum does not coincide with the actual blowing process of the converter, and the phenomenon of asynchrony occurs from time to time. For safety production, the steelmaking plant usually supplements the water level of the converter flue vaporization cooling steam drum with manual monitoring and adjustment, so as to correct the inappropriateness at any time. Drum water level, this situation is not suitable for safe production and modern management requirements
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[0020] From attached figure 1 It can be seen that the automatic water supply device composed of the low water level regulating valve 1, the high water level regulating valve 2 and the valve 8 is connected to the return pipe 6, the oxygen lance 16 is in the rising state before the converter 15 is blown, and the soft water in the deoxygenated water tank 3 is passed through Feed water pump 4, water supply pipe 5, check valve 7, and valve 8 enter the steam drum, and then send it to the water inlet header below the converter flue 11 through the downcomer 10. The converter flue 11 is heated during the converter 15 blowing process. The mixture returns to the steam drum 9 along the rising pipe 12. When the steam drum 9 reaches the working pressure, the pressure regulating valve 13 opens to send steam outward, and the electric contact water level gauge 14 continuously transmits the water level signal of the steam drum 9 to the low water level regulator. Valve 1 and high water level reg...
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The invention discloses a converter steam dome high / low water level automatic feedwater unit, wherein two single impact water level adjustable valve are arranged on the backwater pipe of the revolving furnace evaporation cooling supply pipe interlocking with rise and fall of the oxygen guns.
Description
Technical field: [0001] The invention relates to an automatic control device for metallurgical waste heat utilization, in particular to a steelmaking converter vaporization cooling steam drum double water supply device. Background technique [0002] At present, there are four known water supply methods for steelmaking converter flue vaporization cooling steam drum: [0003] 1. Regular water supply [0004] Before converter blowing, the steam drum is in a low water level state, and during converter blowing, water is supplied to the steam drum according to the set time. [0005] 2. Single impulse limit water supply [0006] The steam drum is in a low water level state before converter blowing, and the water supply limit in converter blowing should not exceed the high water level. [0007] 3. Double impulse automatic water supply [0008] During converter blowing, adjust the opening of the water supply valve to supply water to the steam drum according to the vaporization co...
Claims
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IPC IPC(8): C21C5/46
Inventor史文锦
OwnerSHOUGANG CORPORATION