Temperature control device and temperature control method

Abstract

The invention discloses a temperature control device and a temperature control method, which relate to the technical field of steel making. The temperature control device comprises a combustion-supporting air flow regulating module and a temperature regulating module, wherein the combustion-supporting air flow regulating module is connected with a mixed gas pipeline through a gas flow meter; the combustion-supporting air flow regulating module is connected with the mixed gas pipeline through a gas calorimeter; the combustion-supporting air flow regulating module is connected with a combustion-supporting air pipeline through a combustion-supporting air flow meter; the combustion-supporting air flow regulating module is connected with the combustion-supporting air pipeline through a combustion-supporting air regulating butterfly valve; the temperature regulating module acquires the temperature of a clad through an infrared thermometer; and the temperature regulating module is connected with the mixed gas pipeline through a gas regulating butterfly valve, electric signals are acquired, and according to the electric signals, the gas regulating valve is controlled to regulate the flow of the gas in the mixed gas pipeline. Thus, the operation is simple and convenient; accurate measurement and accurate control on the temperature are realized; energy is saved; the product quality is ensured; the service life of a ladle heater is prolonged; and the cost is saved.

Description

technical field [0001] The invention relates to the technical field of steelmaking. Background technique [0002] The smelting and continuous casting production of steelmaking requires a large number of large and medium ladle turnover. The off-line large and medium bales generally need to be baked by a baker to about 800°C-1000°C and put into use. [0003] Due to the defect of the thermocouple temperature detection method, the harsh environment of the ladle cover and the dirty medium, the current ladle baker thermocouple, regulating valve and other instrumentation equipment are seriously damaged. At present, the ladle baking in many steel factories is basically open baking. There are mainly the following problems: [0004] (1) The thermocouple measurement method, the temperature detection is not accurate, the thermocouple is easily damaged, the maintenance is large, and the replacement is inconvenient. The conventional infrared temperature measurement method is easily int...

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Problems solved by technology

[0003] Due to the defect of the thermocouple temperature detection method, the harsh environment of the ladle cover and the dirty medium, the current ladle baker thermocouple, regulating valve and other instrumentation equipment are seriously damaged. At present, the ladle baking in many steel factories is basically open baking. There are mainly the following problems:

[0004] (1) The thermocouple measurement method, the temperature detection is not accurate, the thermocouple is easily damaged, the maintenance is large, and the replacement is inconvenient

The conventional infrared temperature measurement method is easily interfered by flame and hot gas, the detection temperature is far from the temperature of the ladle, the temperature cannot be accurately measured, and the temperature of the ladle is over-temperature or under-temperature;

[0005] (2) When the baking gas pressure and calorific value fluctuate, the gas flow cannot be adjusted in time, and a large amount of gas is wasted;

[0006] (3) There is an overtime baking phenomenon; there is insufficient baking time, and the temperature of the ladle is low, which affects the quality of steelmaking and the life of the ladle;

[0007] (4) Mixed gas is prone to fouling, and direct access to single-seat or double-seat regulating valves is likely to cause the regulating valve to be stuck and unable to operate, and the standard gas orifice plate should be blocked;

[0008] (5) It is difficult to set the parameters of the temperature control using the double-crossing limiting method, and it is not easy to realize;

[0009] (6) The open baking bag will not only cause waste of energy, but also shorten the service life of refractory materials

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