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Intelligent monitoring method for cooling wall of blast furnace

A technology of intelligent monitoring and cooling stave, which is applied in the field of blast furnace monitoring and intelligent monitoring of blast furnace cooling stave, which can solve the problems of no intelligent monitoring and safety assessment of blast furnace cooling stave, and achieve rapid and accurate results, simple data collection and less damage

Inactive Publication Date: 2008-12-10
TONGJI UNIV
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Problems solved by technology

In this method, the heat flow intensity is related to the water flow, water temperature difference, area of ​​stave and hot surface condition, and its value can only describe the macroscopic state of cooling of the entire stave, and many staves are connected in series or in other complex forms on site. Connected, in fact, the heat flux intensity describes the macroscopic condition of one or several staves
[0008] Through literature search, it is found that there is no report on intelligent monitoring and safety assessment of blast furnace stave at home and abroad.

Method used

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  • Intelligent monitoring method for cooling wall of blast furnace
  • Intelligent monitoring method for cooling wall of blast furnace
  • Intelligent monitoring method for cooling wall of blast furnace

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Embodiment Construction

[0037] Below the present invention is further described, and specific content is as follows:

[0038] (1) Position distribution of stave monitoring points, thermocouple packaging and lead-out methods

[0039] The position distribution of monitoring points is considered as follows: figure 1 shown. Points 1, 2, 3, and 4 are the corner points of the stave, 50mm away from the cold surface of the stave; points 5, 6, 7, and 8 are the center points of areas A, B, C, and D of the stave, respectively, and are 50mm away from the cold surface of the stave. The cold surface is 50mm, which can basically reflect the local high temperature conditions in the four areas; 9 o'clock is the center point of the whole cooling wall, which is installed at half the thickness of the cooling wall. In order to ensure the accuracy of temperature measurement in the wall, the thermocouple uses a capacitor The impact welding machine welds the hot junction to the bottom of the temperature measuring hole.

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Abstract

The invention discloses an intelligent monitoring method for a blast furnace cooling wall, which comprises the following steps that: a cooling wall heat transfer model is established, a heat transfer core model is extracted through a non-linear regression mode, the core model and an artificial neural network are combined to produce a monitoring model for a highest temperature value of a hot surface of the cooling wall and form monitoring software, and the running state and local high-temperature positions of the cooling wall as well as the safety of the cooling wall are evaluated by combining the heat transfer model with temperature values of test points of an in-situ sensor. The method has the advantages of simple data acquisition for theoretical analysis, quick and accurate result generation, and less damage to shells of blast furnaces.

Description

technical field [0001] The invention relates to an intelligent monitoring method for a cooling wall of a blast furnace. The invention belongs to the technical field of blast furnace monitoring methods. Background technique [0002] The on-site monitoring of blast furnace staves has encountered three difficulties: one is the contradiction between the complexity of theoretical analysis and the actual production requirements of fast, simple and accurate; the other is the contradiction between the need for sufficient data for theoretical analysis and the lack of field data and incomplete data . In actual production, the stave usually has only one temperature measuring point and other known parameters are very lacking; third, adding temperature measuring points can improve the accuracy of online monitoring and too many holes in the furnace shell will easily cause stress concentration in the furnace shell. It is easy to cause the contradiction that the furnace shell is damaged. ...

Claims

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Application Information

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IPC IPC(8): C21B7/24
Inventor 吴俐俊周伟国
Owner TONGJI UNIV
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