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A Blast Furnace Cooling Intensity Control Method Based on Fuzzy PID Control

A technology of cooling intensity and control method, which is applied in the direction of cooling device, adaptive control, general control system, etc., can solve problems such as poor stability, narrow application range, and inability to achieve precise control, so as to improve accuracy and stability , Realize real-time control and reduce manpower consumption

Active Publication Date: 2017-10-24
马鞍山市安工大智能装备技术研究院有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the temperature difference self-operated regulating valve is used to automatically adjust the water flow rate of the cooling wall according to the heat load of the cooling wall. Adapt to the complex on-site environment of the blast furnace cooling system, the stability is not good, and precise control cannot be achieved

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  • A Blast Furnace Cooling Intensity Control Method Based on Fuzzy PID Control
  • A Blast Furnace Cooling Intensity Control Method Based on Fuzzy PID Control
  • A Blast Furnace Cooling Intensity Control Method Based on Fuzzy PID Control

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Embodiment Construction

[0036] In order to further understand the content of the present invention, the present invention will be described in detail in conjunction with the accompanying drawings and embodiments.

[0037] In conjunction with the accompanying drawings, a blast furnace cooling intensity control method based on fuzzy PID control in this embodiment aims to control the blast furnace cooling intensity by adjusting the cooling water flow rate, maintain a constant temperature difference of the blast furnace cooling water, and maintain a balance between the cooling intensity and the blast furnace heat load. The balance between them can achieve the longevity of the blast furnace.

[0038] The heat balance equation of the stave is:

[0039] Q=Q 1 +Q 2 (1)

[0040] Q 1 = c w m f (t o -t i ) = c w vSρ(t o -t i ) = c w q w ρ(t o -t i ) (2)

[0041] In the formula, Q is the total heat transfer from the blast furnace to the stave; Q 1 is the heat taken away from the cooling wall by...

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Abstract

The invention discloses a blast furnace cooling intensity control method based on fuzzy PID control, which belongs to the technical field of blast furnace cooling control. Based on heat transfer and engineering thermodynamics, the present invention proposes a novel blast furnace water supply cooling method, using a three-way diverter valve as the actuator, and combining the advantages of conventional PID control and fuzzy control, according to the nonlinearity of the blast furnace cooling intensity control system , time lag and possible uncertain factors, as well as the working characteristics of the blast furnace soft water closed circulation cooling system, the PID parameter self-tuning derivation rule is established, the opening of the three-way diverter valve is adjusted, and then the cooling intensity of the stave is controlled; compared with the existing technology, which realizes the real-time control of cooling intensity, improves the accuracy and stability of control, and reduces manpower consumption.

Description

technical field [0001] The invention relates to the technical field of blast furnace cooling control, more specifically, relates to a blast furnace cooling intensity control method based on fuzzy PID control, and the invention is especially suitable for a blast furnace soft water closed circulation cooling system. Background technique [0002] One of the most notable features of the development process of blast furnace longevity is to try to improve the cooling capacity of the furnace cooling equipment. The continuous improvement of the cooling capacity of the blast furnace cooling equipment has extended the blast furnace life to a large extent. The conventional blast furnace cooling design adopts the "constant flow" water supply cooling method. The amount of water supplied to the cooling elements of each part of the blast furnace cannot be changed according to the specific needs of the cooling intensity. The amount of cooling water obtained by each cooling element can only ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04C21B7/10
Inventor 方挺贾佳
Owner 马鞍山市安工大智能装备技术研究院有限公司