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Annealing furnace air-fuel ratio self-optimizing method and device

An air-fuel ratio and self-optimization technology, applied in furnaces, heat treatment furnaces, furnace types, etc., can solve problems such as poor air-fuel ratio control, heat loss, and system combustion instability, and achieve small temperature fluctuations in the furnace and optimal combustion Situation, effect of small gas consumption

Active Publication Date: 2018-12-21
SHOUGANG JINGTANG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a method and device for self-optimizing the air-fuel ratio of the annealing furnace, which solves the technical problems in the prior art such as poor control of the air-fuel ratio in the combustion control of the annealing furnace, heat loss, and unstable combustion of the system.

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  • Annealing furnace air-fuel ratio self-optimizing method and device
  • Annealing furnace air-fuel ratio self-optimizing method and device
  • Annealing furnace air-fuel ratio self-optimizing method and device

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Embodiment 1

[0045] figure 1 It is a schematic flowchart of a method for self-optimizing the air-fuel ratio of an annealing furnace in an embodiment of the present invention. like figure 1 As shown, the embodiment of the present invention provides a method for self-optimizing the air-fuel ratio of an annealing furnace, the method comprising:

[0046] Step 110: Obtain the initial air-fuel ratio and step size;

[0047] Further, the step size is set to 0-1.

[0048] Specifically, the main task of the combustion control system of the annealing furnace is to adapt the heat provided by the combustion in the annealing furnace to the load of the production line, at the same time ensure that the gas in the furnace can be burned out, realize economical combustion and safe operation, and find the best air-fuel ratio , first set the initial air-fuel ratio and step size in the PID controller of the combustion control system of the annealing furnace, the initial air-fuel ratio is the corresponding ai...

Embodiment 2

[0063] Based on the same inventive concept as the method for self-optimizing the air-fuel ratio of the annealing furnace in the foregoing embodiments, the present invention also provides a device for self-optimizing the air-fuel ratio of the annealing furnace, such as figure 2 As shown, the device includes:

[0064] A first obtaining unit 11, the first obtaining unit 11 is used to obtain an initial air-fuel ratio and a step size;

[0065] A second obtaining unit 12, the second obtaining unit 12 is used to obtain the difference between the actual furnace temperature and the set furnace temperature under the condition of maintaining the initial air-fuel ratio;

[0066] The first judging unit 13, the first judging unit 13 is used to judge whether to continue to optimize according to the difference between the actual furnace temperature and the set furnace temperature;

[0067] The first sending unit 14, the first sending unit 14 is used to send the first optimization informatio...

Embodiment 3

[0083] Based on the same inventive concept as the method for self-optimizing the air-fuel ratio of the annealing furnace in the foregoing embodiments, the present invention also provides a device for self-optimizing the air-fuel ratio of the annealing furnace, on which a computer program is stored, and the program is executed by the processor During execution, the steps of any one of the network authority authentication methods described above are realized.

[0084] Among them, in image 3 In, bus architecture (represented by bus 300), bus 300 may include any number of interconnected buses and bridges, bus 300 will include one or more processors represented by processor 302 and various types of memory represented by memory 304 circuits linked together. The bus 300 may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and thus will not be further described herein. The bus in...

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Abstract

The invention provides an annealing furnace air-fuel ratio self-optimizing method and device. The method comprises the following steps that initial air-fuel ratio and step size are obtained; the difference value between the actual furnace temperature and the set furnace temperature is obtained; whether optimizing is performed continuously or not is judged according to the difference value betweenthe actual furnace temperature and the set furnace temperature; when the difference between the actual furnace temperature and the set furnace temperature is less than or equal to 20 DEG C, first optimizing information is sent; according to the first optimizing information, an in-furnace fuel gas change value is obtained through a fuel gas flow changing device; and the in-furnace fuel gas change value is judged, when the in-furnace fuel gas change quantity is smaller than a set value for three times continuously, optimizing is completed. The technical problems that in the prior art, due to thefact that the control of the air-fuel ratio is not good in annealing furnace combustion control, heat loss, unstable system combustion and the like exist are solved; and the technical effects that the proper air-fuel ratio can still be kept under the working condition that thermal load changes, then the combustion condition is optimized, the optimal combustion control is achieved, the product quality is ensured, the heating quality is improved, the fuel gas consumption is reduced, and the economic benefits are obvious are achieved.

Description

technical field [0001] The invention relates to the technical field of annealing furnace temperature control, in particular to a method and device for self-optimizing the air-fuel ratio of an annealing furnace. Background technique [0002] The annealing furnace temperature control system is actually a single-crossing limiter control system with air-fuel ratio correction. It uses the annealing furnace temperature control circuit as the main circuit, and the mixed gas flow and combustion air flow are connected in parallel as the secondary circuit. The combustion control system is one of the prerequisites and keys of the annealing furnace temperature control system. The basic task of the combustion control system is to adapt the heat provided by the combustion to the load of the production line, while ensuring economical combustion and safe operation. The air-fuel ratio is the guarantee An important factor for the combustion effect in the furnace. The air-fuel ratio is differe...

Claims

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Application Information

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IPC IPC(8): C21D9/00C21D1/26C21D1/52C21D11/00
CPCC21D1/26C21D1/52C21D9/00C21D11/00
Inventor 乔梁付振兴苏晨光
Owner SHOUGANG JINGTANG IRON & STEEL CO LTD
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