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KR101176002B1 - Method for monitoring conditon of electric furnace - Google Patents

Method for monitoring conditon of electric furnace Download PDF

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Publication number
KR101176002B1
KR101176002B1 KR1020090091925A KR20090091925A KR101176002B1 KR 101176002 B1 KR101176002 B1 KR 101176002B1 KR 1020090091925 A KR1020090091925 A KR 1020090091925A KR 20090091925 A KR20090091925 A KR 20090091925A KR 101176002 B1 KR101176002 B1 KR 101176002B1
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sensing
electric furnace
temperature
molten steel
refractory
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KR20110034415A (en
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박재일
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현대제철 주식회사
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces
    • F27B3/10Details, accessories or equipment, e.g. dust-collectors, specially adapted for hearth-type furnaces
    • F27B3/28Arrangement of controlling, monitoring, alarm or the like devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces
    • F27B3/08Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces heated electrically, with or without any other source of heat
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D21/00Arrangement of monitoring devices; Arrangement of safety devices
    • F27D21/0014Devices for monitoring temperature
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D21/00Arrangement of monitoring devices; Arrangement of safety devices
    • F27D21/02Observation or illuminating devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D21/00Arrangement of monitoring devices; Arrangement of safety devices
    • F27D21/04Arrangement of indicators or alarms
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/52Manufacture of steel in electric furnaces
    • C21C2005/5288Measuring or sampling devices

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

본 발명은 전기로내의 온도를 센싱하여 전기로내 용강과 내화물 상태를 감시할 수 있도록 한 전기로내 상태 감시 제어 방법에 관한 것으로, 제어부가 전기로 감시부로부터 전기로내의 촬영영상과 전기로 내의 내화물, 수냉자켓, 용강 및 출강구 중 적어도 하나의 센싱 포인트에 대한 센싱온도를 입력받는 단계, 제어부가 센싱온도를 센싱 포인트별로 각각 설정된 기준온도 범위와 비교하여 센싱온도가 기준온도 범위를 벗어나면 알람부를 제어하여 알람을 발생시키는 단계 및 제어부가 촬영영상에 센싱온도를 포함시켜 표시부에 표시하는 단계를 포함하되, 알람을 발생시키는 단계에서, 제어부는 센싱 포인트가 내화물 또는 수냉자켓인 경우 내화물 열간보수 요청 메시지를, 센싱 포인트가 용강인 경우 용강온도 제어 메시지를, 센싱 포인트가 출강구인 경우 슬래그 누출 경고 메시지를 알람과 함께 표시부에 표시하는 것을 특징으로 한다.The present invention relates to an electric furnace state monitoring and control method for sensing the temperature in the electric furnace to monitor the molten steel and the refractory state in the electric furnace, wherein the control unit from the electric furnace monitoring unit, the image in the electric furnace and the refractory in the electric furnace, water cooling jacket Receiving a sensing temperature for at least one sensing point among the molten steel and the tapping hole, and the controller compares the sensing temperature with a reference temperature range set for each sensing point and controls the alarm unit when the sensing temperature is out of the reference temperature range. And generating a sensing temperature by including the sensing temperature in the photographed image and displaying it on the display unit. In the generating the alarm, the controller senses a refractory hot repair request message when the sensing point is a refractory or a water cooling jacket. If the point is molten steel, the molten steel temperature control message is sent. In this case, the slag leak warning message is displayed on the display unit along with the alarm.

전기로, 내화물, 용강, 온도 Furnace, refractory, molten steel, temperature

Description

전기로내 상태 감시 제어 방법{METHOD FOR MONITORING CONDITON OF ELECTRIC FURNACE}METHOOD FOR MONITORING CONDITON OF ELECTRIC FURNACE}

본 발명은 전기로내 상태 감시 제어 방법에 관한 것으로, 더 상세하게는 전기로내의 온도를 센싱하여 전기로내 용강과 내화물 상태를 감시할 수 있도록 한 전기로내 상태 감시 제어 방법에 관한 것이다.The present invention relates to an electric furnace state monitoring control method, and more particularly, to an electric furnace state monitoring control method for sensing the temperature in the electric furnace to monitor the molten steel and refractory state in the electric furnace.

일반적으로 전기로는 전기를 이용하여 금속이나 합금을 가열, 용해하는 것이다.In general, an electric furnace uses electricity to heat and melt a metal or an alloy.

이러한 전기로는 전기로의 상부를 개폐시키는 루푸에 수직 방향으로 설치된 전극봉에 고전류를 통전하여 고열의 아크 열을 발생시켜 전기로 내부의 고철과 합금철을 용해한다.Such an electric furnace conducts a high current through an electrode rod installed in a vertical direction in a loop which opens and closes an upper portion of the electric furnace to generate high heat arc heat, thereby dissolving the scrap iron and ferroalloy in the electric furnace.

상기한 기술구성은 본 발명의 이해를 돕기 위한 배경기술로서, 본 발명이 속하는 기술분야에서 널리 알려진 종래기술을 의미하는 것은 아니다.The technical structure described above is a background technique for assisting the understanding of the present invention, and does not mean the prior art widely known in the technical field to which the present invention belongs.

그런데, 이러한 전기로내는 용강의 높은 열에 의해 조업중에 내화물이나 용강 상태를 파악하는데 어려움이 있었다.However, such an electric furnace has a difficulty in grasping refractory or molten steel during operation due to the high heat of molten steel.

따라서, 본 발명은 전기로내의 내화물과 수냉자켓 및 용강과 출강구 등의 포인트별 온도를 센싱하고 센싱온도가 기준온도 범위를 벗어나느지 여부를 체크함으로써 전기로내 용강과 내화물 상태를 감시할 수 있도록 한 전기로내 상태 감시 제어 방법을 제공하는데 그 목적이 있다.Therefore, the present invention senses the temperature of each point of the refractory and the water cooling jacket and the molten steel and tap in the furnace, and checks whether the sensing temperature is out of the standard temperature range by the electric furnace to monitor the molten steel and refractory state in the furnace Its purpose is to provide a method for controlling status monitoring.

본 발명에 의한 전기로내 상태 감시 제어 방법은, 제어부가 전기로 감시부로부터 전기로내의 촬영영상과 상기 전기로 내의 내화물, 수냉자켓, 용강 및 출강구 중 적어도 하나의 센싱 포인트에 대한 센싱온도를 입력받는 단계; 상기 제어부가 상기 센싱온도를 상기 센싱 포인트별로 각각 설정된 기준온도 범위와 비교하여 상기 센싱온도가 기준온도 범위를 벗어나면 알람부를 제어하여 알람을 발생시키는 단계; 및 상기 제어부가 상기 촬영영상에 상기 센싱온도를 포함시켜 표시부에 표시하는 단계를 포함하되, 상기 알람을 발생시키는 단계에서, 상기 제어부는 상기 센싱 포인트가 내화물 또는 수냉자켓인 경우 내화물 열간보수 요청 메시지를, 상기 센싱 포인트가 용강인 경우 용강온도 제어 메시지를, 상기 센싱 포인트가 출강구인 경우 슬래그 누출 경고 메시지를 상기 알람과 함께 상기 표시부에 표시하는 것을 특징으로 한다.In the electric furnace state monitoring control method according to the present invention, the control unit receives a sensing temperature for at least one sensing point of the refractory, the water cooling jacket, molten steel and taps in the furnace and the image taken in the electric furnace from the electric furnace monitoring unit step; Comparing the sensing temperature with a reference temperature range set for each sensing point and generating an alarm by controlling an alarm unit when the sensing temperature is out of the reference temperature range; And displaying, by the controller, the sensing temperature in the photographed image and displaying the sensing temperature on the display unit. In the generating of the alarm, the controller sends a refractory hot repair request message when the sensing point is a refractory or a water cooling jacket. And displaying a molten steel temperature control message when the sensing point is molten steel and a slag leak warning message when the sensing point is a tap hole together with the alarm.

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상술한 바와 같이, 본 발명은 내화물과 수냉자켓 및 용강과 출강구 등의 전기로내 포인트별 센싱온도가 기준온도 범위를 벗어나는지 여부를 체크함으로써 전기로내 용강과 내화물 상태를 용이하게 감시할 수 있다.As described above, the present invention can easily monitor the molten steel and the refractory state of the furnace by checking whether or not the sensing temperature for each point in the furnace, such as refractory, water-cooling jacket and molten steel and tapping port is out of the reference temperature range.

이하, 실시예를 통하여 본 발명을 더욱 상세히 설명하기로 한다. 이들 실시예는 단지 본 발명을 예시하기 위한 것이며, 본 발명의 권리 보호 범위가 이들 실시예에 의해 제한되는 것은 아니다.Hereinafter, the present invention will be described in more detail with reference to Examples. These embodiments are only for illustrating the present invention, and the scope of rights of the present invention is not limited by these embodiments.

이 과정에서 도면에 도시된 선들의 두께나 구성요소의 크기 등은 설명의 명료성과 편의상 과장되게 도시되어 있을 수 있다. 또한, 후술되는 용어들은 본 발명에서의 기능을 고려하여 정의된 용어들로서 이는 사용자, 운용자의 의도 또는 관례에 따라 달라질 수 있다. 그러므로, 이러한 용어들에 대한 정의는 본 명세서 전반에 걸친 내용을 토대로 내려져야 할 것이다.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.

도 1은 본 실시예에 의한 전기로내 상태 감시 제어 장치를 설명하기 위한 블 럭도이고, 도 2는 본 실시예에 의한 전기로내 상태 감시 제어 방법을 설명하기 위한 순서도이며, 도 3과 도 4는 본 실시예에 의한 전기로를 설명하기 위한 단면도이고, 도 5는 본 실시예에 의한 전기로내의 촬영영상과 포인트별 센싱온도를 도시한 도면이다.FIG. 1 is a block diagram illustrating an apparatus for controlling in-state condition monitoring according to the present embodiment, FIG. 2 is a flowchart illustrating a method for controlling in-state condition monitoring according to the present embodiment, and FIGS. 3 and 4 5 is a cross-sectional view for describing an electric furnace according to the present embodiment, and FIG. 5 is a view illustrating a captured image and a sensing temperature for each point in the electric furnace according to the present embodiment.

도 1 내지 도 5를 참고하면, 본 실시예에 의한 전기로내 상태 감시 제어 장치는 전기로 감시부(1)와 제어부(2)와 표시부(3) 및 알람부(4)를 포함한다.1 to 5, the apparatus for monitoring the state of an electric furnace according to the present embodiment includes an electric furnace monitoring unit 1, a control unit 2, a display unit 3, and an alarm unit 4.

전기로내 감시부(1)는 적외선 열화상 카메라를 포함하여 전기로(5)내를 촬영하고 전기로(5)내의 포인트별로 온도를 센싱하여 제어부(2)로 전송한다. 전기로(5)내의 포인트는 예를들어 내화물(내화벽돌)(52)과 수냉자켓(53) 및 용강(6)과 출강구(51) 등이 될 수 있다.The furnace monitoring unit 1 photographs the inside of the furnace 5 including an infrared thermal imager, senses the temperature of each point in the furnace 5, and transmits the temperature to the controller 2. The points in the electric furnace 5 may be, for example, refractory (firebrick) 52, a water cooling jacket 53, molten steel 6, a tap hole 51, and the like.

제어부(2)는 전기로내 감시부(1)로부터 촬영영상과 전기로내 포인트별 센싱온도를 입력받아 센싱온도와 설정된 기준온도 범위를 비교한다.The control unit 2 receives the sensing image for each point in the furnace and the captured image from the furnace monitoring unit 1 and compares the sensing temperature with the set reference temperature range.

이때, 센싱온도가 기준온도 범위를 벗어나면 알람을 발생시키고, 촬영영상에 센싱온도를 포함시켜 표시한다. 또한, 센싱온도가 기준온도 범위를 벗어나면 센싱 포인트에 따른 메시지를 알람과 함께 화면에 표시한다.At this time, when the sensing temperature is out of the reference temperature range, an alarm is generated and the sensing temperature is included in the captured image. In addition, when the sensing temperature is out of the reference temperature range, a message according to the sensing point is displayed on the screen together with an alarm.

여기서, 기준온도 범위는 전기로내의 온도를 센싱하는 포인트별로 기준온도 범위가 각각 설정된다.Here, the reference temperature range is set by the reference temperature range for each point for sensing the temperature in the electric furnace.

예를들어, 내화물과 수냉자켓의 기준온도 범위는 1300 ~ 1400 ℃, 용강과 출강구 기준온도 범위는 1500 ~ 1700 ℃ 로 설정한다. 여기서 기준온도 범위는 사용자가 변경 설정할 수 있다.For example, the refractory and water cooling jackets have a standard temperature range of 1300 to 1400 ° C and molten steel and outlet port temperature ranges of 1500 to 1700 ° C. Here, the reference temperature range can be changed and set by the user.

표시부(3)는 제어부(2)의 제어를 받아 촬영영상과 센싱온도를 화면에 표시하고, 알람부(4)는 제어부(2)의 제어를 받아 알람을 발생한다.The display unit 3 displays the captured image and the sensing temperature on the screen under the control of the controller 2, and the alarm unit 4 generates an alarm under the control of the controller 2.

도 1 내지 도 5를 참고하여 본 실시에에 의한 전기로내 상태 감시 제어 방법을 설명하면 다음과 같다.Referring to Figures 1 to 5 will be described in the furnace state monitoring control method according to this embodiment as follows.

먼저, 제어부(2)는 전기로내 감시부(1)로부터 전기로(5)내 촬영영상과 전기로내의 센싱 포인트별 센싱온도를 입력받는다(S1).First, the control unit 2 receives the sensing temperature of each of the sensing images in the electric furnace 5 and the photographed image in the electric furnace 5 from the electric furnace monitoring unit 1 (S1).

이어서, 제어부(2)는 포인트별 센싱온도와 설정된 기준온도 범위를 비교한다(S2).Subsequently, the controller 2 compares the sensing temperature for each point with the set reference temperature range (S2).

이때, 센싱온도가 기준온도 범위를 벗어나면 알람을 발생시키고(S3), 촬영영상에 센싱온도를 포함시켜 표시한다(S4). In this case, when the sensing temperature is out of the reference temperature range, an alarm is generated (S3), and the sensing temperature is included in the captured image and displayed (S4).

여기서, 센싱온도가 기준온도 범위를 벗어나면 센싱 포인트에 따른 메시지를 알람과 함께 화면에 표시한다.Here, when the sensing temperature is out of the reference temperature range, a message according to the sensing point is displayed on the screen together with an alarm.

예를들어, 내화물(52)과 수냉자켓(53)의 센싱온도가 기준온도 범위 1300 ~ 1400 ℃를 벗어나면 내화물 열간보수 요청 메시지를 알람과 함께 화면에 표시한다. 또한 용강(6)의 센싱온도가 기준온도 범위 1500 ~ 1700 ℃를 벗어나면 용강온도를 승온 또는 냉각을 위한 제어 메시지를 알람과 함께 화면에 표시한다. 또한, 용강 출강시 출강구(51)의 용강온도가 1500 ~ 1700 ℃를 벗어나면 슬래그 누출 경고 메시지를 알람과 함께 화면에 표시한다.For example, if the sensing temperature of the refractory 52 and the water cooling jacket 53 is out of the reference temperature range 1300 ~ 1400 ° C, a refractory hot repair request message is displayed on the screen together with an alarm. In addition, when the sensing temperature of the molten steel (6) is out of the reference temperature range 1500 ~ 1700 ℃, a control message for raising or cooling the molten steel temperature is displayed on the screen together with an alarm. In addition, if the molten steel temperature of the tapping hole 51 is out of 1500 ~ 1700 ℃ when the molten steel tapping, the slag leak warning message is displayed on the screen together with the alarm.

이와 같이 본 발명은 내화물과 수냉자켓 및 용강과 출강구 등의 전기로내 포인트별 센싱온도가 기준온도 범위를 벗어나는지 여부를 체크함으로써 전기로내 용 강과 내화물 상태를 용이하게 감시할 수 있다.As described above, the present invention can easily monitor the furnace steel and the refractory state by checking whether or not the sensing temperature for each point in the furnace such as the refractory and the water cooling jacket and the molten steel and the exit port is out of the reference temperature range.

상술한 바와 같이 본 발명은 도면에 도시된 실시예를 참고로 하여 설명되었으나, 이는 예시적인 것에 불과하며, 당해 기술이 속하는 분야에서 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시예가 가능하다는 점을 이해할 것이다. 따라서 본 발명의 진정한 기술적 보호범위는 아래의 특허청구범위에 의해서 정하여져야 할 것이다.As described above, the present invention has been described with reference to the embodiments shown in the drawings, but this is merely exemplary, and various modifications and equivalent other embodiments of the present invention may be made by those skilled in the art. I understand that it is possible. Therefore, the true technical protection scope of the present invention will be defined by the claims below.

도 1은 본 실시예에 의한 전기로내 상태 감시 제어 장치를 설명하기 위한 블럭도이다.1 is a block diagram for explaining an in-electric furnace state monitoring control apparatus according to the present embodiment.

도 2는 본 실시예에 의한 전기로내 상태 감시 제어 방법을 설명하기 위한 순서도이다.2 is a flowchart illustrating a method for controlling in-electric furnace state monitoring according to the present embodiment.

도 3과 도 4는 본 실시예에 의한 전기로를 설명하기 위한 단면도이다.3 and 4 are cross-sectional views for explaining the electric furnace according to the present embodiment.

도 5는 본 실시예에 의한 전기로내의 촬영영상과 포인트별 센싱온도를 도시한 도면이다.FIG. 5 is a diagram illustrating a captured image and a sensing temperature for each point in the electric furnace according to the present embodiment.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

1 : 전기로 감시부 2 : 제어부1: electric furnace monitoring unit 2: control unit

3 : 표시부 4 : 알람부3: Display unit 4: Alarm unit

5 : 전기로 6 : 용강5: electric furnace 6: molten steel

51 : 출강구 52 : 내화물51: exit port 52: refractory

53 : 수냉자켓53: water cooling jacket

Claims (4)

제어부가 전기로 감시부로부터 전기로내의 촬영영상과 상기 전기로 내의 내화물, 수냉자켓, 용강 및 출강구 중 적어도 하나의 센싱 포인트에 대한 센싱온도를 입력받는 단계;Receiving, by the controller, a sensing image of at least one sensing point of a refractory, a water cooling jacket, a molten steel, and a tap in the electric furnace and a photographed image in the electric furnace from an electric furnace monitoring unit; 상기 제어부가 상기 센싱온도를 상기 센싱 포인트별로 각각 설정된 기준온도 범위와 비교하여 상기 센싱온도가 기준온도 범위를 벗어나면 알람부를 제어하여 알람을 발생시키는 단계; 및Comparing the sensing temperature with a reference temperature range set for each sensing point and generating an alarm by controlling an alarm unit when the sensing temperature is out of the reference temperature range; And 상기 제어부가 상기 촬영영상에 상기 센싱온도를 포함시켜 표시부에 표시하는 단계를 포함하되,And including the sensing temperature by the control unit in the captured image and displaying the sensing temperature on the display unit. 상기 알람을 발생시키는 단계에서, 상기 제어부는 상기 센싱 포인트가 내화물 또는 수냉자켓인 경우 내화물 열간보수 요청 메시지를, 상기 센싱 포인트가 용강인 경우 용강온도 제어 메시지를, 상기 센싱 포인트가 출강구인 경우 슬래그 누출 경고 메시지를 상기 알람과 함께 상기 표시부에 표시하는 것을 특징으로 하는 전기로내 상태 감시 제어 방법.In the generating of the alarm, the control unit sends a refractory hot repair request message when the sensing point is a refractory or a water cooling jacket, a molten steel temperature control message when the sensing point is molten steel, and a slag leak when the sensing point is a tap hole. And a warning message is displayed on the display unit together with the alarm. 삭제delete 삭제delete 삭제delete
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002081992A (en) 2000-06-29 2002-03-22 Mitsubishi Heavy Ind Ltd Plasma ash melting furnace and method for operating the same
KR100523793B1 (en) 2000-08-18 2005-10-26 주식회사 포스코 Breakout monitoring system and its method in continuous casting process

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002081992A (en) 2000-06-29 2002-03-22 Mitsubishi Heavy Ind Ltd Plasma ash melting furnace and method for operating the same
KR100523793B1 (en) 2000-08-18 2005-10-26 주식회사 포스코 Breakout monitoring system and its method in continuous casting process

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