The present invention therefore relates to a temperature measuring device precursor Ex.
BACKGROUND
[2]
The rapidly reflect the blast furnace output pioneering exact temperature of the operating conditions of the blast furnace iron making process is important for nohwang stabilization, manufacturing efficiency and energy consumption efficiency.
[3]
The temperature of the precursor is typically blast furnace output is difficult because it is enough to alter the state of a high temperature part material, accurately measured.
Detailed Description of the Invention
SUMMARY
[4]
One embodiment of the invention, there is provided a blast furnace output pioneering temperature measuring device which can accurately measure the temperature of the blast furnace output precursors.
Problem solving means
[5]
Blast output pioneering temperature measuring device according to one embodiment of the invention, blast furnace output precursors of the first and second wavelength radiation for measuring the energy, and the first and second temperature by applying a reference radiation coefficient ratio to the second wavelength radiation value a temperature measuring unit for measuring; Camera for obtaining an image of the blast furnace output precursors; A video processor for calculating a ratio of the slag and the molten iron and the slag and the molten iron from the identification image; And a correction unit for generating a final temperature value by applying a correction temperature value corresponding to the difference between the reference ratio corresponding to the ratio between the reference emissivity ratio calculated by said image processing unit on the temperature value measured by the temperature measuring unit; It may contain.
Effects of the Invention
[6]
According to the invention, the blast furnace output, and can be a precursor of the temperature measured accurately, and can quickly be reflected in the operating conditions of the iron making process, it can therefore be nohwang improved stabilization, manufacturing efficiency and energy consumption efficiency.
Brief Description of the Drawings
[7]
1 is a view showing the blast furnace output pioneering temperature measuring device according to one embodiment of the present invention.
[8]
2 is a view showing the distribution of the radiant energy in addition a temperature measurement can be measured.
[9]
Figure 3 is a diagram showing the wavelength-specific properties of the radiation coefficient slag and molten iron.
[10]
Figure 4 is a view showing an emissivity ratio of the ratio of the slag and molten iron.
[11]
Figure 5 is a view of the temperature value of the error ratio of the slag and molten iron.
[12]
6 is a view showing parts of the ratio measurement.
[13]
7 is a view showing the brightness analysis of the acquired image of the camera.
[14]
8 is a view showing the position of the analysis obtained from the image of the camera.
[15]
9 is a view showing the analysis area in the acquired image of the camera.
[16]
Figure 10 is a view showing the maximum brightness, the minimum brightness and the average brightness of the image obtained from the camera.
Mode for the Invention
[17]
With reference to the accompanying drawings will be described embodiments of the present invention. However, embodiments of the present invention can be modified in various other forms of, but is not limited to the embodiment that is described below scope of the invention. The shape and size of the elements in the drawings may be exaggerated for more clear explanation, elements represented by the same reference numerals on the drawings, the same element.
[18]
1 is a view showing the blast furnace output pioneering temperature measuring device according to one embodiment of the present invention.
[19]
1, a furnace output pioneering temperature measuring device according to one embodiment of the present invention, may include a temperature measurement unit 110, a rate measurement section 120 and the correction section 130.
[20]
Temperature measurement unit 110 may measure a temperature value of the blast furnace output precursor 10. For example, the temperature measuring unit 110 may be implemented as a two-wavelength thermometer to each other by measuring the radiation of different wavelengths generate a temperature value.
[21]
Ratio measurement unit 120 may measure the ratio of the slag (slag) and the molten iron blast furnace Ex precursor 10. For example, the rate measurement unit 120 may measure the ratio of the slag and the molten iron to obtain the image of the blast furnace output precursors 10 and analyze the images.
[22]
Correction section 130 may generate the final temperature value by applying a correction temperature value corresponding to the ratio determined by the ratio measurement unit 120, the temperature value measured by the temperature measurement unit 110. The
[23]
There are characterized in that temperature values ​​measured by the temperature measurement section 110 differ from the actual temperature according to the ratio of the slag and the molten iron, the correction section 130 is measured by the by correcting these characteristics, a temperature measurer 110 the actual temperature than the temperature value can produce a closer final temperature value. Accordingly, the temperature of the blast furnace output precursor 10 can be accurately measured.
[24]
Figure 2 is a view showing a distribution of radiation energy can be a temperature measurement unit measuring, radiant energy (E according to the wavelength (λ) of a black body (Blackbody) of the specific temperature (T) λ a, b (λ, T)) radiation (E according to the wavelength (λ) of the physical surface of a certain temperature (T) (real surface) λ shows a (λ, T)).
[25]
Here, the radiation energy (E real surface of λ (λ, T)) is a radiation energy (E a black body λ can be defined as the product of a, b (λ, T)) and the emissivity (ελ).
[26]
The double-wavelength thermometer emissivity is set is the radiation energy (E a first wavelength (λ1) at a particular temperature λ1 ) and radiation (E of the second wavelength (λ2) λ2 corresponding to the difference between the measured), two radiation a temperature value that can be generated. Here, the relationship between the difference value and the temperature value is Stefan-Boltzmann's law may be set depending on the.
[27]
This can be generalized to Equation 1 below. Here, the value obtained by dividing in the radiation coefficient (ε1) of the first wavelength (λ1) to a radiation coefficient (ε2) of the second wavelength (λ2) may be defined as the ratio of radiation coefficient.
[28]
[Formula 1]

[29]
A temperature measuring unit therefore Ex precursor of the first and second wavelength radiation (E λ1 , E λ2 ) for measurement, and the first and second wavelength radiation (E λ1 , E λ2 ) temperature by applying a reference radiation coefficient ratio on It may generate a value. For example, the temperature measuring section may set the radiation coefficient ratio when the ratio of molten iron and slag in the furnace output pioneering the reference rate ratio based on the radiation coefficient.
[30]
On the other hand, the proportion of the slag from the blast furnace output chulseon initial precursor may be greater than the proportion of slag in chulseon end. Therefore, the reference ratio can be set as a percentage of the average of the blast furnace slag when the chulseon Ex precursor medium conducted.
[31]
Figure 3 is a view showing a wavelength-specific emissivity characteristics of the slag and molten iron, showing a radiation coefficient (Emissivity) according to each wavelength (Wavelength) slag (slag) and molten iron (Steel).
[32]
Here, the radiation coefficient of the slag can not be substantially influenced by the wavelength, the radiation coefficient of the molten iron may be subject to relatively significant impact from the wavelength. That is, the radiation coefficient ratio of the slag, but can be close to 1, the non-emissivity of the molten iron may be close to 1.
[33]
Therefore, the equation (1) can be expressed by Equation 2 below in accordance with the reflection of the radiation coefficient of the radiation rate of the slag and molten iron. Here, m is the coefficient of radiant heat of the molten iron, and the emissivity εs is the slag, Am is the area ratio of the molten iron, As is an area ratio of the slag, and the sum of the area ratio of the molten iron and slag, the area ratio is 1.
[34]
[Formula 2]

[35]
Figure 4 is a view showing an emissivity ratio of the rate of slag and molten iron, showing the overall emissivity ratio (e-Slope) according to the ratio of the slag (Slag Ratio).
[36]
Full emissivity ratio is higher the percentage of slag may be closer to 1 emissivity ratio of the slag.
[37]
Figure 5 is a chart showing the temperature error value according to the ratio of the slag and molten iron, showing a temperature error value (Temp. Difference) according to the ratio of the slag (Slag Ratio).
[38]
Here, the reference radiation rate ratio set in the temperature measuring section may be assumed the ratio of the radiation coefficient when the ratio of the slag 40%.
[39]
For example, the ratio of each of the slag can correspond to the temperature error value. Correction unit is able to generate a negative correction of the temperature value of the temperature error value corresponding to the ratio determined by the ratio measurement section.
[40]
For example, the correction unit is the ratio of the slag measured by the ratio measurement section larger than the standard ratio can generate a large correction temperature value, the ratio of the slag measured by the ratio measurement section smaller than the reference ratio It may generate a small correction temperature value.
[41]
6 is a view showing parts of the ratio measurement.
[42]
Referring to Figure 6, it may include a rate measuring unit the camera 121, the image processor 122 and the controller 123.
[43]
Camera 121 may obtain an image of the blast furnace output precursor 10. For example, the camera 121 may be a high-speed camera that can be taken 200 times per second, and may have a zoom (zoom) capabilities.
[44]
Image processing unit 122 may calculate the ratio by identifying the slag and the molten iron from the image. For example, the image processor 122 may be implemented in a computing environment comprising a processor, memory, input devices, output devices and communication connections.
[45]
Controller 123 on the basis of the image analysis results of the image processing unit 122 can control the shooting range of the camera 121. For example, the controller 123 may adjust the size of the recording range by controlling the lens of the camera 121, and drives the camera 121 may adjust the position of the shooting area.
[46]
7 is a view showing the brightness analysis of the acquired image of the camera, an example of the image, and an example of a graph showing the brightness according to the position of the image and, as an example of a first reference brightness (Threshold 1), the second reference It shows an example of a brightness corresponding to the example of the brightness (Threshold 2), a boundary point slag (slag) and molten iron (Iron).
[47]
For example, the ratio of the image processing unit included in the measuring section is higher than the first and the second reference brightness in the pixels and the image having a higher brightness than the second standard brightness (brightness) from the image pixel having a lower brightness than the second reference brightness the ratio can be calculated.
[48]
For example, the image processing unit included in the rate measuring section is identified by the first reference brightness set of pixels having a lower brightness than (Threshold 1) from the image background, and the higher than first reference brightness (Threshold 1) from the video data providing identifying a second reference set of pixels having a lower brightness than the brightness (Threshold 2) in the molten iron (Iron), and first and second reference brightness (Threshold 1, Threshold 2) than slag the set of pixels having a high brightness in the image It can be identified by (Slag).
[49]
On the other hand, the pixel and to the pixels may include a pixel set consisting of not only one pixel of a plurality of pixels adjacent to each other.
[50]
Figure 8 is a chart showing an analysis location in the acquired image of the camera, showing one example and one example of the reference lines 1 to 3 is set in the base line of the video image.
[51]
For example, the control unit included in the rate measuring unit may be, depending on the overall position of the dark area corresponding to a background image to adjust the shooting range of the camera. Image may be divided into regions and the area above the reference line 3 between the lower area of ​​the first reference line and the reference line and the first region and the reference line between reference line 22 and reference line 3. The controller larger the difference between the ratio of the dark area in the corner area of ​​the baseline ratio and the dark region in the area below the reference line 13 may move a lot of the shooting range of the camera.
[52]
On the other hand, the reference line first to third reference line may be set based on the analysis result of the image processing unit. For example, the reference lines 1 to 3 is a reference line may be set based on the overall position of the interface between the slag or molten iron and the background in the image. Then, the second reference line may be set to the center line of the base line from 1 to 3 baseline. The second reference line can be used in the analysis region setting below.
[53]
Figure 9 is a chart showing an analysis area in the acquired image of the camera, showing one example of the analysis region is set in one example, and the image of the video.
[54]
For example, the image processing unit sets a reference line 1 and the reference line 3, which correspond to the position of the boundary of a dark area corresponding to a background, and the reference line 1 and sets the reference line 2 between the reference line 3 comprising a ratio measurer and to set the analysis region including a portion of the reference line 2, and calculating the percentage of pixels in the first pixel and the analysis region having the higher brightness than the second reference brightness in the analysis region has a lower brightness than the second reference brightness can.
[55]
Accordingly, the image processing time of image processing can be reduced, and the implementation of image concentration analysis for improving the analysis accuracy of the image processing can be facilitated.
[56]
On the other hand, the analysis regions may be arbitrarily selected from among the region that is a pixel having a lower brightness than the reference brightness, without first setting the reference line 1 to 3 baseline not substantially included.
[57]
Figure 10 is a view showing the maximum brightness, the minimum brightness and the average brightness of the acquired image of the camera, showing the brightness of the image of the molten iron and slag in brightness according to the position of the video image.
[58]
For example, the image processing unit included in the rate measuring section may set a dependent first and a second reference brightness to at least one of a maximum brightness, the minimum brightness and the average brightness of the image.
[59]
The overall brightness of the image obtained by the camera may be changed according to the blast furnace output pioneering environment. The overall brightness can be reflected on the maximum brightness, the minimum brightness and the average brightness.
[60]
Accordingly, the blast furnace output pioneering temperature measuring device according to one embodiment of the present invention can be flexible in spite of the environment of the blast furnace output, and measuring the exact precursor therefore Ex precursor temperature.
[61]
The present invention is not limited by the above-described embodiment and the accompanying drawings. And to limit the scope by the appended claims, to those skilled in the art is that the substitution of various types may be made without departing from the scope of the present invention, variations and change set forth in It will be apparent.

WE Claims

Blast furnace output, and measuring the precursor of the first and second wavelength radiation, said first and said temperature measuring part for applying the reference radiation coefficient ratio to the second wavelength radiation by measuring the temperature value; Camera for obtaining an image of the blast furnace output precursors; A video processor for calculating a ratio of the slag and the molten iron and the slag and the molten iron from the identification image; And a correction unit for generating a final temperature value by applying a correction temperature value corresponding to the difference between the reference ratio corresponding to the ratio between the reference emissivity ratio calculated by said image processing unit on the temperature value measured by the temperature measuring unit; Ex precursor therefore the temperature measuring device comprising a.
[Claim 2]
The method of claim 1, wherein the correction unit blast furnace output pioneering temperature measuring device for generating the temperature correction value to the blast furnace output precursor is more than the slag to the molten iron to increase the temperature of the final value.
[Claim 3]
The method of claim 1, wherein the image processing unit of the first and the pixel 2, the reference brightness is higher than the than the first reference brightness from the pixels and the image having a high brightness (brightness) having a lower brightness than the second reference brightness in the image blast output pioneering temperature measuring device for calculating the ratio.
[Claim 4]
The method of claim 1, wherein the image processor is a first identify a set of the reference pixels having a lower brightness than the brightness of the background, and the second is higher than the first reference brightness having a lower brightness than the second reference brightness in the image from the image identifying a set of pixels in the hot metal, and therefore output pioneering temperature measuring device for identifying a set of pixels with a higher brightness than the first and second reference brightness in the image to the slag.
[Claim 5]
The method of claim 1, wherein the image processor identifies a set of pixels having a lower brightness than the first reference brightness in the image as a background and a reference line 1 and the reference line 3, which correspond to the position of the boundary of the background from the image set, and the reference line 1 and the base line to base line set 2 in the image between the third and the brightness of the analysis region including a part of the baseline two high set in the image, and in the analysis area than the second reference brightness Ex precursor therefore the temperature measurement device for calculating a ratio of pixels having a lower brightness than the second reference pixels and the brightness in the analysis region having the.
[Claim 6]
The method of claim 4, wherein the blast furnace output pioneering temperature measuring device further comprises a control unit for controlling the photographing range of the camera based on a ratio of the background at the location or the image in the image of the background.
[Claim 7]
The method of claim 3, wherein the image processor is therefore output pioneering temperature measurement device for setting the maximum brightness, dependent of the first and second reference brightness to at least one of the minimum brightness and the average brightness of the image.
[Claim 8]
According to claim 5, wherein the image processor is therefore output pioneering temperature measurement device for setting the maximum brightness, minimum brightness, average brightness, and at least one subordinate said first and second reference brightness of the image.