The control method and control system of blast furnace material flow valve opening degree
A control method and material flow valve technology, which is applied to blast furnaces, blast furnace details, furnaces, etc., can solve the problems of large opening adjustment errors and poor applicability of material flow valves, and achieve precise control and avoid fluctuations in blast furnace conditions.
Active Publication Date: 2021-10-22
INST OF RES OF IRON & STEEL JIANGSU PROVINCE +2
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Problems solved by technology
[0007] The purpose of the present invention is to provide a control method and control system for the opening of the blast furnace material flow valve, which solves the problems of large adjustment error and poor applicability of the material flow valve opening in the prior art
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[0051] The present invention will be described in detail below with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and structural, method, or functional changes made by those skilled in the art according to these embodiments are all included in the protection scope of the present invention.
[0052] ginseng figure 1 As shown in the figure, an embodiment of the present invention provides a control method, which can be specifically used to control the opening of the material flow valve on the top of the blast furnace, so as to regulate the material speed of the material flowing out of the charging tank in the distribution stage, so as to further realize the distribution The actual time is close to the set ideal situation, which is conducive to the control of the blast furnace antegrade. Below, combine figure 2 The shown blast furnace top equipment introduces each step of a preferred embo...
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The invention provides a method and a control system for controlling the opening degree of a material flow valve of a blast furnace. The control method includes: generating a material flow valve opening setting instruction for the next material distribution stage; collecting the tank number, charge type and set material weight of the next material distribution stage; The next material distribution stage has m historical material distribution stages with the same charge type and tank number, and constructs the functional relationship of actual material weight W, actual material distribution time T, and material flow valve opening K; when judging the next material distribution stage and its When any one of the tank number and the set material weight of the latest material distribution stage with the same charge type is different, the actual material weight W of the next material distribution stage is collected n and set cloth time T n , and calculate the material flow valve opening K in the next distributing stage according to the functional relationship n ; On the contrary, according to the functional relationship, calculate the valve opening error ΔK of the latest distribution stage of the history 0 , calculate the material flow valve opening K in the next stage of distributing n =K 0 +ΔK 0 .
Description
technical field [0001] The invention belongs to the technical field of smelting blast furnace control, and relates to a control method and a control system for the opening degree of a blast furnace material flow valve. Background technique [0002] Blast furnace distribution usually refers to: according to the distribution system, the coke and ore and other charge materials are distributed from the tank into the high temperature and high pressure furnace body in a certain way. Usually, blast furnace distribution is carried out in successive intervals. Specifically, the distribution of coke and ore is taken as an example: First, the ore is poured into the material tank through the feeding device, and the material flow valve at the lower end of the material tank is opened at a preset opening, The ore flows out of the material tank and falls on the inclined chute, and then slides down along the chute to the material surface in the furnace to realize the distribution of the ore;...
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IPC IPC(8): C21B5/00C21B7/20
CPCC21B5/006C21B7/20
Inventor 赵华涛张少波杜屏翟明朱华
Owner INST OF RES OF IRON & STEEL JIANGSU PROVINCE