KR20120097000A - Apparatus for detecting slab in furnace and method thereof - Google Patents

Apparatus for detecting slab in furnace and method thereof Download PDF

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Publication number
KR20120097000A
KR20120097000A KR1020110016297A KR20110016297A KR20120097000A KR 20120097000 A KR20120097000 A KR 20120097000A KR 1020110016297 A KR1020110016297 A KR 1020110016297A KR 20110016297 A KR20110016297 A KR 20110016297A KR 20120097000 A KR20120097000 A KR 20120097000A
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KR
South Korea
Prior art keywords
slab
distance
heating furnace
transparent window
measuring sensor
Prior art date
Application number
KR1020110016297A
Other languages
Korean (ko)
Inventor
이현주
Original Assignee
현대제철 주식회사
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Filing date
Publication date
Application filed by 현대제철 주식회사 filed Critical 현대제철 주식회사
Priority to KR1020110016297A priority Critical patent/KR20120097000A/en
Publication of KR20120097000A publication Critical patent/KR20120097000A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/40—Arrangements of controlling or monitoring devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
    • F27D21/02—Observation or illuminating devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
    • F27D21/04—Arrangements of indicators or alarms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D19/00—Arrangements of controlling devices
    • F27D2019/0028—Regulation
    • F27D2019/0071—Regulation using position sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

The present invention relates to an apparatus and a method for detecting a slab of a heating furnace, by detecting the slab located at the extraction end through the distance measured at the extraction end of the heating furnace, regardless of the thickness of the slab charged in the heating furnace. By detecting the slab through one distance sensor, the wiring is unified and the wiring cost can be reduced, and the distance of the slab can be estimated by measuring the distance of the slab.

Description

Slab detection device and method thereof in a heating furnace {APPARATUS FOR DETECTING SLAB IN FURNACE AND METHOD THEREOF}

The present invention relates to a slab detection device and a method of the heating furnace, and more specifically, to a slab detection device of the heating furnace to detect the slab located in the extraction stage through the distance measured in the extraction stage of the heating furnace and its It is about a method.

In general, a heating furnace is a facility for heating a heating material that is hot-rolled in a steel mill such as slabs, billets, etc. using a fuel such as gas or oil to an appropriate temperature of about 1200 to 1300 degrees Celsius.

The heating furnace is located in the entire process of the hot rolling process for processing into a product such as a plate, a wire rod in the hot rolling process, and the atmosphere temperature is set in consideration of the extraction target temperature according to the heating material and the residence time in the furnace.

The technology described above refers to the background of the technical field to which the present invention belongs, and does not mean the prior art.

SUMMARY OF THE INVENTION An object of the present invention is to provide a slab detecting apparatus and a method for detecting a slab located at an extraction stage through a distance measured at an extraction stage of a heating furnace.

Slab detection device of the heating furnace according to an aspect of the present invention comprises a distance measuring sensor for measuring the distance through the transparent window in the heating furnace extraction stage; And a controller for determining the presence of the slab based on the measured distance measured from the distance measuring sensor.

In the present invention, the distance sensor is characterized in that the laser sensor is installed on the outer side of the furnace extraction stage to irradiate the laser into the furnace through a transparent window horizontally.

In the present invention, the distance sensor is characterized in that the slab is installed in each of the outer both sides of the extraction stage of the heating furnace when discharged in two lines.

In the present invention, the transparent window is characterized in that it is formed to be horizontal with the fixed beam upper surface of the skid device.

The present invention is characterized in that it further comprises an alarm unit for generating an alarm when the measuring distance is not input from the distance measuring sensor to the control unit.

Slab detection method of the heating furnace according to another aspect of the present invention comprises the steps of measuring the distance through the transparent window formed in the extraction stage of the heating furnace through the distance measuring sensor; And determining the presence of the slab by comparing the measured measurement distance with the reference distance.

Measuring distance in the present invention is characterized by measuring by irradiating the laser horizontally from the distance measuring sensor through a transparent window.

In the present invention, the transparent window is characterized in that formed on one side of the heating extraction stage.

In the present invention, the step of determining the existence of the slab is characterized in that it is determined that the slab exists when the measurement distance is less than the reference distance.

As described above, the present invention can detect the presence of the slab irrespective of the thickness of the slab charged in the heating furnace by detecting the slab located at the extraction end through the distance measured at the extraction end of the heating furnace.

The present invention can reduce the wiring cost by unifying the wiring work by detecting the slab through one distance sensor.

In addition, the present invention can predict the length of the slab extracted through the distance to the measured slab by detecting the presence of the slab by measuring the distance.

1 is a side view schematically showing a heating furnace according to an embodiment of the present invention.
Figure 2 is a block diagram showing a slab detection apparatus of the heating furnace according to an embodiment of the present invention.
3 is a flowchart illustrating a slab detection method of a heating furnace according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the slab detection apparatus and method of the heating furnace according to the present invention. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

1 is a side view schematically showing a heating furnace according to an embodiment of the present invention, Figure 2 is a block diagram showing a slab detection apparatus of the heating furnace according to an embodiment of the present invention.

As shown in FIG. 1, the furnace includes a skid device 30 for moving while supporting the slab 10 therein and a plurality of burners 20 for providing a heat source.

The skid device 30 is a device for moving the slab 10. The movable beam 34 is moved in a state in which the fixed beam 32 supports the slab 10 through the fixed beam 32 and the moving beam 34. The slab 10 is preheated from the inside of the furnace by operating the transfer cycle of up, forward, down, retreat, etc. (40) → 1 heating zone (50) → 2 heating zones (60) → 3 heating zones (70) → cracking zone (80) Move it to) and let it out.

The slab 10 discharged in this way is transferred to a rolling process, which is a subsequent process, to perform rolling.

FIG. 2 shows a state in which the slab 10 is discharged in two lines in a state where the inside of the heating furnace 5 is viewed from the front of the extraction stage of the heating furnace 5.

The slab detection apparatus of the heating furnace 5 according to an embodiment of the present invention includes a distance measuring sensor 100 and a control unit 110, and further includes an alarm unit 120.

The distance measuring sensor 100 includes a laser sensor installed at an outer side of the extraction end of the heating furnace 5 and irradiating a laser into the heating furnace 5 through the transparent window 90 horizontally.

In this case, the transparent window 90 is formed to be horizontal with the upper surface of the fixed beam 32 of the skid device 30.

Therefore, the distance sensor 100 through the transparent window 90 measures the horizontal distance to the slab 10 supported by the fixed beam 32 by irradiating a laser. In addition, the transparent window 90 is formed to be horizontal to the upper surface of the fixed beam 32 so that all the slab 10 on the fixed beam 32 can be measured irrespective of the thickness of the slab 10. .

When the slab 10 is a heating furnace 5 discharged into two lines as shown in FIG. 2, the distance measuring sensor 100 is installed on each of both outer sides of the extraction end of the heating furnace 5 and is discharged to each line. Measure the distance to (10).

The controller 110 determines the existence of the slab 10 based on the measured distance measured from the distance measuring sensor 100.

That is, when measuring the distance with the slab 10 from the distance measuring sensor 100, when the slab 10 is present, the measuring distance is measured to be less than the reference distance. However, if the slab 10 is not present, the distance to the wall on the opposite side of the heating furnace 5 is measured or the distance to the slab 10 existing on another line is measured. In this case, since the measurement distance is greater than the reference distance, it is determined that the slab 10 does not exist in the corresponding line.

The alarm unit 120 generates an alarm when the measurement distance is not input from the distance measurement sensor 100 to the control unit 110, thereby causing an error of the distance measurement sensor 100 and the distance measurement sensor 100 and the control unit 110. Make sure to recognize communication error.

As described above, the slab detection apparatus of the heating furnace according to the present invention measures the horizontal distance through the distance measuring sensor 100 at one side of the extraction end of the heating furnace 5 and measures the slab 10 at the extraction stage based on the measured distance measured. ), It is possible to determine whether the slab 10 exists regardless of the thickness of the slab 10.

3 is a flowchart illustrating a slab detection method of a heating furnace according to an embodiment of the present invention.

In the slab detection method of the heating furnace according to an embodiment of the present invention as shown in Figure 3, first, the distance to the slab 10 by irradiating the laser beam horizontally to the transparent window 90 through the distance measuring sensor 100. Measure (S10).

In this case, the transparent window 90 is formed on one side of the extraction end of the heating furnace 5 and is formed to horizontally view the slab 10 supported by the fixed beam 32.

Thus, the existence of the slab 10 is determined by comparing the measured distance and the reference distance measured by the distance measuring sensor 100 (S20).

That is, when measuring the distance with the slab 10 from the distance measuring sensor 100, when the slab 10 is present, the measuring distance is measured to be less than the reference distance. However, if the slab 10 is not present, the distance to the wall on the opposite side of the heating furnace 5 is measured or the distance to the slab 10 existing on another line is measured. In this case, since the measurement distance is greater than the reference distance, it is determined that the slab 10 does not exist in the corresponding line.

Therefore, if the measured distance is less than the reference distance is determined as the slab present (S30), if the measured distance is greater than the reference distance is determined as the slab absence (S40).

Thus, according to the slab detection method of the heating furnace according to the present invention, by comparing the horizontal distance measured by the distance measuring sensor 100 at one side of the extraction end of the heating furnace 5 with the reference distance to the slab (10) ), It is possible to determine whether the slab 10 exists regardless of the thickness of the slab 10.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand. Accordingly, the technical scope of the present invention should be defined by the following claims.

5: heating furnace 10: slab
32: fixed beam 34: moving beam
90: transparent window 100: distance measuring sensor
110: control unit 120: alarm unit

Claims (9)

Distance measuring sensor for measuring the distance through the transparent window in the furnace extraction stage; And
And a control unit for determining the presence of the slab on the basis of the measured distance measured by the distance measuring sensor.
The slab of a heating furnace according to claim 1, wherein the distance measuring sensor is a laser sensor which is installed at an outer side of the heating extraction stage and irradiates a laser into the heating furnace horizontally through the transparent window. Sensing device.
The slab detection apparatus of claim 1, wherein the distance measuring sensor is installed at both outer sides of the heating extraction stage when the slabs are discharged in two lines.
The slab detection apparatus of claim 2, wherein the transparent window is formed to be horizontal to an upper surface of the fixed beam of the skid device.
The slab detection apparatus of claim 1, further comprising an alarm unit configured to generate an alarm when the measurement distance is not input from the distance measuring sensor to the control unit.
Measuring a distance through a transparent window formed at the extraction stage of the heating furnace through a distance measuring sensor; And
The slab detection method of the heating furnace comprising the step of determining the presence of the slab by comparing the measured measurement distance and the reference distance.
The method of claim 6, wherein the measuring of the distance comprises measuring horizontally irradiating a laser beam from the distance measuring sensor through the transparent window.
The method of claim 6, wherein the transparent window is a slab detection method of the heating furnace, characterized in that formed on one side of the heating extraction stage.
The method of claim 6, wherein the determining of the presence of the slab comprises determining that the slab exists when the measurement distance is less than the reference distance.
KR1020110016297A 2011-02-24 2011-02-24 Apparatus for detecting slab in furnace and method thereof KR20120097000A (en)

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Application Number Priority Date Filing Date Title
KR1020110016297A KR20120097000A (en) 2011-02-24 2011-02-24 Apparatus for detecting slab in furnace and method thereof

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KR20120097000A true KR20120097000A (en) 2012-09-03

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101442915B1 (en) * 2012-11-07 2014-09-24 주식회사 포스코 Method for controlling skid beam moving pattern in furnace and thereof apparatus
KR102004841B1 (en) * 2018-06-01 2019-07-29 주식회사 코어이미징 System and method for monitoring heating furnace

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101442915B1 (en) * 2012-11-07 2014-09-24 주식회사 포스코 Method for controlling skid beam moving pattern in furnace and thereof apparatus
KR102004841B1 (en) * 2018-06-01 2019-07-29 주식회사 코어이미징 System and method for monitoring heating furnace

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