Blade abrasion evaluation method of KR desulfuration paddle agitator

A blade wear and agitator technology, which is applied in the field of blade wear evaluation of KR desulfurization paddle agitators, can solve the problems of unstable desulfurization effect, unfavorable desulfurization operation stably and orderly, and increased production cost.

Active Publication Date: 2014-08-06
WUHAN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. Visual inspection, the operator observes the shape of the agitator blade with the naked eye, judges the wear condition, and decides whether to repair or replace the agitator based on experience; because workers need to visually evaluate the wear condition, and need to rely on subjective experience to decide whether to repair or replace the agitator The repair or replacement of the agitator brings a lot of randomness, which is not conducive to the stable and orderly desulfurization ...

Method used

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  • Blade abrasion evaluation method of KR desulfuration paddle agitator
  • Blade abrasion evaluation method of KR desulfuration paddle agitator
  • Blade abrasion evaluation method of KR desulfuration paddle agitator

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Embodiment 1

[0062] A blade wear evaluation method for a paddle agitator used in KR desulfurization. The specific steps of the evaluation method are as follows: Figure 5 Shown:

[0063] The first step, the setting of blade wear evaluation position

[0064] The paddle agitator 2 blades to be evaluated in this embodiment are uniformly arranged for KR desulfurization, and the number of blades 4 is 3. The surface of each blade 4 consists of the upper end surface 5 of the blade, the lower end surface of the blade opposite to the upper end surface 5 of the blade, The blade force-bearing side 7, the other side opposite to the blade force-bearing side 7 and the blade outer end surface 6 are composed.

[0065] The blade wear evaluation position is: the plane determined by the centroid of the blade 4 is on the same plane as the lens centerline of the first industrial camera 1, and the circle formed by the rotation of the centroid of the blade 4 is tangent to the lens centerline of the first indus...

Embodiment 2

[0104] A blade wear evaluation method for a paddle agitator used in KR desulfurization. The specific steps of the evaluation method are as follows: Figure 5 Shown:

[0105] The first step, with the first step of embodiment 1;

[0106] Second step, with embodiment 1 second step;

[0107] The third step is to use the manual adjustment method to determine the service limit shape of the blade 4 of the KR desulfurization paddle agitator 2 that is worn out to the point of being unusable:

[0108] Take the midpoint of the edge of the force-bearing side 7 of the blade close to and parallel to the axis line of the paddle agitator 2 for KR desulfurization as the reduced reference point; for the force-bearing side 7 of the blade, follow the initial standard shape 8: use limit shape 10 The side length ratio of the corresponding side is 1:k for shrinking to obtain the service limit profile 10 of the stressed side surface 7 of the blade.

[0109] Take the midpoint of the line connectin...

Embodiment 3

[0124] A blade wear evaluation method for a paddle agitator used in KR desulfurization. The specific steps of the evaluation method are as follows: Figure 5 Shown:

[0125] The first step is except that the quantity of blade 4 is 4, all the other are with the first step of embodiment 1;

[0126] Second step, with embodiment 1 second step;

[0127] The 3rd step except following parameter, all the other are with the 3rd step of embodiment 2;

[0128] Wherein: k=the axial length of the unused blade 4 after removing 65% of the thickness of the surface refractory material layer / the axial length of the unused blade 4 .

[0129] The fourth step, first predetermine the wear replacement value W1 and the wear repair value W2 of the blade 4 during use. In this embodiment, determine the wear replacement value W1=0.85 and the wear repair value W2=0.43, and then evaluate the blade 4 during use. wear condition;

[0130] S4-1 is the same as S4-1 of Embodiment 1.

[0131] S4-2 is the sa...

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Abstract

The invention relates to a blade abrasion evaluation method of a KR desulfuration paddle agitator. According to the technical scheme, blade abrasion evaluation positions are set in advance, the initial standard outline and the usage limit outline of each blade (4) of an unused KR desulfuration paddle agitator (2) in the corresponding blade abrasion evaluation position are determined respectively, and then the abrasion replacement value W1 and the abrasion repair value W2 of each blade (4) of the KR desulfuration paddle agitator (2) in the using process are determined; then, a series of images of the blades (4) in the rotating process of the KR desulfuration paddle agitator (2) are acquired through a first industrial camera (1) and a second industrial camera (2), the abrasion virtual outline of each blade (4) is calculated according to the series of images to be compared with the corresponding initial standard outline and the corresponding usage limit outline, and the comprehensive abrasion evaluation rate R of each blade (4) is obtained; finally, the abrasion evaluation result is given according to the comprehensive abrasion evaluation rate R, and the abrasion replacement value W1 and the abrasion repair value W2 of each blade (4). The blade abrasion evaluation method of the KR desulfuration paddle agitator has the advantages of being easy to operate, accurate in evaluation and capable of quantizing abrasion.

Description

technical field [0001] The invention belongs to the technical field of digital image processing. In particular, it relates to a blade wear evaluation method of a paddle stirrer for KR desulfurization. Background technique [0002] In the KR desulfurization operation, the molten iron in the molten iron tank is mixed with the desulfurizer under the action of the agitator and undergoes a chemical reaction, and the sulfur element in the molten iron is combined into the scum and finally removed. The speed of the agitator and the shape of the agitator blade affect The kinetic conditions of the reaction between molten iron and desulfurizer ultimately affect the desulfurization effect, so it is very important to evaluate the wear of the agitator blades. At present, there are mainly the following methods to evaluate the wear condition of agitator blades: [0003] 1. Visual inspection, the operator observes the shape of the agitator blade with the naked eye, judges the wear conditio...

Claims

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Application Information

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IPC IPC(8): G01B11/24G01B11/28
Inventor 但斌斌容芷君陈奎生湛从昌肖林伟曾良才付连东陈新元朱学彪
Owner WUHAN UNIV OF SCI & TECH
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