Method of controlling temperature of high-temperature ring annealing furnace

A technology of annular annealing furnace and control method, which is applied in the direction of heat treatment process control, manufacturing tools, heat treatment equipment, etc., can solve problems such as inability to meet production, waste of energy, and loss.

Active Publication Date: 2007-10-24
武汉钢铁有限公司
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Problems solved by technology

During the production of the high-temperature annular annealing furnace, the furnace door of the sealed heating furnace must be lifted and the hearth rotated every once in a while. After the furnace door is lifted, a large amount of heat is lost, and the heat balance of the heating furnace is destroyed. Due to the large volu

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  • Method of controlling temperature of high-temperature ring annealing furnace
  • Method of controlling temperature of high-temperature ring annealing furnace
  • Method of controlling temperature of high-temperature ring annealing furnace

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Embodiment Construction

[0024] The specific implementation will be described in detail below in conjunction with the accompanying drawings.

[0025] As shown in Figure 1, the system described in this embodiment includes a burner, a flow regulating element, a flow detecting element, a temperature detecting element and a control system; as shown in Figure 3, the output signals of the furnace temperature regulator in the control system are respectively output to High selector and low selector, the output signal of the high selector is output to the gas valve through the gas flow regulator, the gas flow signal is output to the low selector through the gas flow regulator, and the output signal of the low selector is output through the air flow regulator To the air valve, the air flow signal is output to the high selector through the air flow regulator; as shown in Figure 4, the output signal of the furnace temperature regulator is set according to the following steps:

[0026] a. Use the conventional PIC ...

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Abstract

The invention discloses a temperature control method of a high ring annealing furnace controlling the furnace temperature according to the different behavior, which comprises the following steps: applying the low burning control method after opening the door of the furnace in order to save the energy and protect the equipment. The invention is characterized by the following: transmitting separately the output signal of the furnace temperature adjuster in the control system to a high selector and a low selector which controls a gas relief valve and an air valve through a flow regulator and the other input of which is a computational value detected by the flow regulator according to the normal single cross limiting amplitude control means; when opening the furnace door, equipping the output signal of the furnace temperature adjuster with the low burning fixed value; when closing the furnace door, equipping the output signal of the furnace temperature adjuster with a behavior burning fixed value, wherein 5 DEG C between the equipped value of the furnace temperature adjuster and the detected value of the furnace temperature adjuster; the output signal of the furnace temperature is equipped with the burning fixed value after recovering the low burning.

Description

technical field [0001] The invention relates to a method for controlling the furnace temperature of a high-temperature annular annealing furnace. Background technique [0002] The high-temperature annular annealing furnace is a heating furnace used for high-temperature annealing of steel. The temperature detection element detects the temperature of the heating furnace. The detected temperature value is input into the control system through the thermocouple input module. The air and gas flow detection element detects the flow rate of the medium pipeline. The flow value is input to the control system through the analog input module, and the control program processes the detected furnace temperature value, flow value, and furnace door lifting signal to calculate and output the control value, and the output control value is output to the gas and air flow adjustment through the analog output module. The element controls the flow of the energy medium pipeline. During the producti...

Claims

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Application Information

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IPC IPC(8): C21D11/00C21D1/26
Inventor 王卫平陈艾华王源苏光明朱霞代向红王建斌梁昆
Owner 武汉钢铁有限公司
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