KR20120097040A - Agitating gas nozzle for medium blowing at electric furnace, alarm apparatus and method using the nozzle - Google Patents

Agitating gas nozzle for medium blowing at electric furnace, alarm apparatus and method using the nozzle Download PDF

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KR20120097040A
KR20120097040A KR1020110016354A KR20110016354A KR20120097040A KR 20120097040 A KR20120097040 A KR 20120097040A KR 1020110016354 A KR1020110016354 A KR 1020110016354A KR 20110016354 A KR20110016354 A KR 20110016354A KR 20120097040 A KR20120097040 A KR 20120097040A
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South Korea
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nozzle
electric furnace
alarm
gas line
hole
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KR1020110016354A
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Korean (ko)
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KR101246201B1 (en
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유대경
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현대제철 주식회사
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/52—Manufacture of steel in electric furnaces
    • C21C5/5211—Manufacture of steel in electric furnaces in an alternating current [AC] electric arc furnace
    • C21C5/5217—Manufacture of steel in electric furnaces in an alternating current [AC] electric arc furnace equipped with burners or devices for injecting gas, i.e. oxygen, or pulverulent materials into the furnace
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/072—Treatment with gases
    • 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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/16—Introducing a fluid jet or current into the charge
    • F27D2003/167—Introducing a fluid jet or current into the charge the fluid being a neutral gas
    • 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
    • F27D2019/0068—Regulation involving a measured inflow of a particular gas in the enclosure
    • 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
    • F27D27/00—Stirring devices for molten material
    • F27D2027/002—Gas stirring
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

PURPOSE: An agitating gas nozzle for blowing media into an electric furnace and an alarm apparatus and method using the nozzle are provided to prevent the leakage of molten metal by checking the degree of erosion of refractory materials. CONSTITUTION: An agitating gas nozzle for blowing media into an electric furnace comprises a block type body stacked in an electric furnace, a nozzle(121) which passes through the body and is connected to an agitating gas line(211) outside the electric furnace to blow agitating gas into the electric furnace, and an alarm hole(131) which is formed on an end of the body facing the agitating gas line and connected to the agitating gas line. [Reference numerals] (231) Control unit

Description

전기로 중취 교반용 가스 분사구, 그 분사구를 이용한 경보장치 및 방법{AGITATING GAS NOZZLE FOR MEDIUM BLOWING AT ELECTRIC FURNACE, ALARM APPARATUS AND METHOD USING THE NOZZLE}GAS NOZZLE FOR MEDIUM BLOWING AT ELECTRIC FURNACE, ALARM APPARATUS AND METHOD USING THE NOZZLE}

본 발명은 전기로 중취 교반용 가스 분사구, 그 분사구를 이용한 경보장치 및 방법에 관한 것으로, 더욱 상세하게는 전기로 내부에 적치되는 가스 분사구를 통해 내화물의 용손 정도를 파악할 수 있는 전기로 중취 교반용 가스 분사구, 그 분사구를 이용한 경보장치 및 방법에 관한 것이다.
The present invention relates to an electric furnace deodorizing agitation gas injection port, an alarm device and method using the injection hole, and more specifically for the electric furnace deodorization agitation which can grasp the degree of melting loss of the refractory through the gas injection hole is placed inside the electric furnace It relates to a gas injection port, an alarm device and a method using the injection port.

일반적으로, 전기로를 이용한 제강 공정에서는, 전기로 내에 고철 또는 스크랩(Scrap)이 장입되고 전극봉에 전류가 인가됨에 따라 스크랩에 대한 용해가 이루어진다.In general, in a steelmaking process using an electric furnace, as scrap metal or scrap is charged in the electric furnace and a current is applied to the electrode, melting of the scrap is performed.

스크랩을 용해하면서, 탈산, 탈황 및 탈류를 하기 위해서, 부원료(Fe-Si, CaCO3, CaO, MO-Oxide) 등을 전기로의 내부로 투입하여 불순물을 제거하고, 또한 용강에 대한 교반력을 얻기 위하여 아르곤가스, 질소가스 등과 같은 교반가스를 취입(blowing)한다.In order to deoxidize, desulfurize, and deflow while dissolving scraps, secondary raw materials (Fe-Si, CaCO 3 , CaO, MO-Oxide) and the like are introduced into an electric furnace to remove impurities and to obtain stirring power for molten steel. Blowing agitation gas, such as argon gas, nitrogen gas in order to blow.

전기로의 저부 및 벽체에는 전기로를 보호하기 위한 스탬(Stamp)재, 내화벽돌 등과 같은 내화물이 축조되며, 이러한 내화물은 용강과, 용강 및 산소를 함유하고 있는 슬래그와 접촉하는데, 산소가 함유된 슬래그와 내화물 사이에는 화학적 침식, 용강의 유동반응 등에 의한 기계적 침식 등이 일어나 내화물이 계속적으로 손상(용손)을 입는다.
Refractory materials such as stamp materials, refractory bricks, etc., are built into the bottom and walls of the electric furnace, and the refractory is in contact with slag containing molten steel, molten steel, and oxygen. Between the refractory, mechanical erosion due to chemical erosion, flow reaction of molten steel, etc. occurs, the refractory is continuously damaged (melting loss).

본 발명의 목적은 전기로 내부에 적치되는 가스 분사구를 통해 내화물의 용손 정도를 파악할 수 있는 전기로 중취 교반용 가스 분사구, 그 분사구를 이용한 경보장치 및 방법을 제공하는데 있다.It is an object of the present invention to provide an electric furnace deodorizing agitation gas injection port, which can grasp the degree of melting loss of the refractory through the gas injection port is placed inside the electric furnace, an alarm device and method using the injection hole.

본 발명이 이루고자 하는 기술적 과제들은 이상에서 언급한 기술적 과제들로 제한되지 않으며, 언급되지 않은 다른 기술적 과제들은 아래의 기재로부터 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 명확하게 이해될 수 있을 것이다.Technical problems to be achieved by the present invention are not limited to the above-mentioned technical problems, and other technical problems not mentioned above may be clearly understood by those skilled in the art from the following description. There will be.

상기 목적을 달성하기 위한 본 발명에 따른 전기로 중취 교반용 가스 분사구는 블록 형태를 이루어 전기로 내벽에 적치되는 몸체; 상기 몸체의 내부에 양측 단면들을 관통하여 형성되어 상기 전기로 외부의 교반가스라인과 연결되며, 교반가스를 상기 전기로 내부로 취입(blowing)하는 노즐; 및 상기 교반가스라인과 대면하는 상기 몸체의 단면에 요입 형성되어 상기 교반가스라인과 연결되는 경보홀;을 특징으로 한다.Gas injection hole for the electric furnace deodorization stirring in accordance with the present invention for achieving the above object is a block form body is placed on the inner wall of the electric furnace; A nozzle formed through both end surfaces of the body to be connected to a stirring gas line outside the electric furnace, and blowing a stirring gas into the electric furnace; And an alert hole formed in a cross section of the body facing the stirring gas line and connected to the stirring gas line.

상기 몸체는 내화재질로 이루어진다.The body is made of a refractory material.

상기 노즐은 상기 몸체의 길이를 따라 경사지게 형성되고, 상기 경보홀은 상기 노즐과 거리를 두고 나란히 형성됨이 바람직하다.
The nozzle is inclined along the length of the body, the alarm hole is preferably formed side by side with a distance to the nozzle.

본 발명에 따른 경보장치는 교반가스 취입 노즐과 경보홀을 갖고 전기로 내벽에 적치되는 분사구; 상기 전기로 외부에 배설되어 상기 노즐 및 상기 경보홀과 연결되는 교반가스라인; 상기 교반가스라인의 중간에 설치되어 교반가스의 압력을 감지하는 압력트랜스미터; 및 상기 압력트랜스미터와 전기적으로 연결되어 교반가스의 압력을 체크하는 제어수단;을 특징으로 한다.The alarm device according to the present invention has a stirring gas blowing nozzle and the alarm hole injection hole is placed on the inner wall of the furnace; A stirring gas line disposed outside the electric furnace and connected to the nozzle and the alarm hole; A pressure transmitter installed in the middle of the stirring gas line to sense a pressure of the stirring gas; And control means electrically connected to the pressure transmitter to check the pressure of the stirring gas.

상기 교반가스라인의 중간에 설치되어 상기 제어수단의 작동 제어를 받는 밸브를 더 포함할 수 있다.
It may further include a valve installed in the middle of the stirring gas line to receive the operation control of the control means.

본 발명에 따른 경보방법은 제어수단이, 압력트랜스미터로부터 교반가스의 압력데이터를 전송받아 기 설정된 기준데이터와 비교하며 체크하는 단계; 및 상기 제어수단이, 전기로 내벽에 적치되는 분사구가 침식됨으로 인해 길이가 짧아져 경보홀이 개방됨으로써 상기 압력데이터가 상기 기준데이터보다 낮으면 경보신호를 출력하는 단계;를 특징으로 한다.The alarming method according to the present invention includes the steps of, by the control means, receiving pressure data of the stirring gas from the pressure transmitter and comparing it with preset reference data; And outputting an alarm signal when the pressure data is lower than the reference data by the control means, the length of which is shortened due to the erosion of the injection hole deposited on the inner wall of the furnace and the alarm hole being opened.

상기 경보신호를 출력하는 단계에서, 상기 제어수단은 교반가스라인을 차단하기 위해 밸브를 폐쇄하는 신호를 더 출력할 수 있다.
In the step of outputting the alarm signal, the control means may further output a signal for closing the valve to block the stirring gas line.

본 발명에 의해, 내화물의 용손 정도를 파악함으로써 과침식으로 인한 용강 누출 사고의 위험을 사전에 예방할 수 있다.
According to the present invention, it is possible to prevent the risk of a molten steel leakage accident due to over erosion by grasping the degree of melting loss of the refractory.

도 1은 본 발명의 전기로 중취 교반용 가스 분사구 및 그 분사구를 이용한 경보장치의 사용상태도이다.
도 2는 본 발명의 전기로 중취 교반용 가스 분사구를 나타낸 사시도이다.
도 3은 본 발명의 전기로 중취 교반용 가스 분사구를 나타낸 단면도이다.
도 4는 본 발명의 경보장치를 나타낸 도면이다.
도 5는 본 발명의 경보장치의 사용상태도이다.1 is a state diagram used in the electric furnace deodorizing stirring gas injection port and the alarm device using the injection hole of the present invention.
Figure 2 is a perspective view showing a gas injection port for the deodorization stirring electric furnace of the present invention.
3 is a cross-sectional view showing a gas injection port for the deodorization stirring electric furnace of the present invention.
4 is a view showing the alarm device of the present invention.
5 is a state diagram used in the alarm device of the present invention.

이하, 본 발명의 바람직한 실시예를 첨부한 도면을 참조하여 상세히 설명하면 다음과 같다. 도면들 중 동일한 구성요소들은 가능한 어느 곳에서든지 동일한 부호로 표시한다. 또한 본 발명의 요지를 불필요하게 흐릴 수 있는 공지 기능 및 구성에 대한 상세한 설명은 생략한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like elements in the figures are denoted by the same reference numerals wherever possible. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

도 1은 본 발명의 전기로 중취 교반용 가스 분사구 및 그 분사구를 이용한 경보장치의 사용상태도이다.1 is a state diagram used in the electric furnace deodorizing stirring gas injection port and the alarm device using the injection hole of the present invention.

도 2는 본 발명의 전기로 중취 교반용 가스 분사구를 나타낸 사시도이다. 도 3은 본 발명의 전기로 중취 교반용 가스 분사구를 나타낸 단면도이다.Figure 2 is a perspective view showing a gas injection port for the deodorization stirring electric furnace of the present invention. 3 is a cross-sectional view showing a gas injection port for the deodorization stirring electric furnace of the present invention.

도 4는 본 발명의 경보장치를 나타낸 도면이다. 도 5는 본 발명의 경보장치의 사용상태도이다.4 is a view showing the alarm device of the present invention. 5 is a state diagram used in the alarm device of the present invention.

도 1 내지 도 3에 도시된 바와 같이, 본 발명의 전기로 중취 교반용 가스 분사구(100)는 예컨대, 사각 블록 형태의 몸체(110)를 구비하여 전기로(1)의 벽체 중간에 내화물과 함께 적치된다.As shown in Figures 1 to 3, the gas nozzle 100 for the deodorizing agitation of the present invention is provided with a refractory in the middle of the wall of the electric furnace 1, for example, having a body 110 in the form of a square block. It is loaded.

몸체(110)는 상기 내화물과 동일한 내화재질로 이루어진다.Body 110 is made of the same refractory material as the refractory.

이러한 몸체(110)의 내부에는 양측 단면들(111,113)을 관통하여 노즐(121)이 형성된다.The nozzle 121 is formed inside the body 110 by penetrating both end surfaces 111 and 113.

노즐(121)은 전기로(1) 외부의 교반가스라인(211)과 연결되어 교반가스라인(211)이 공급하는 교반가스(5)를 전기로(1) 내부로 취입(blowing)한다.The nozzle 121 is connected to the stirring gas line 211 outside the furnace 1 to blow the stirring gas 5 supplied by the stirring gas line 211 into the furnace 1.

노즐(121)은 몸체(110)의 길이를 따라 경사지게 형성되어 용강(3)이 일방향으로 회전하며 유동할 수 있도록 교반가스(5)를 취입함으로써, 교반가스(5)를 용강(3)을 교반하는 강력한 동력원으로 사용하는 전기로 중취 기능을 달성한다.The nozzle 121 is formed to be inclined along the length of the body 110 to blow the stirring gas 5 so that the molten steel 3 can rotate and flow in one direction, thereby stirring the stirring gas 5 with the molten steel 3. The electric furnace used as a powerful power source to achieve the deodorizing function.

교반가스라인(211)과 대면하는 몸체(110)의 단면(111)에는 경보홀(131)이 요입 형성된다.An alarm hole 131 is formed in the end surface 111 of the body 110 facing the stirring gas line 211.

경보홀(131)은 노즐(121)과 거리를 두고 나란히 형성되어 교반가스라인(211)과 연결된다.The alarm hole 131 is formed side by side with a distance from the nozzle 121 is connected to the stirring gas line 211.

경보홀(131)은 노즐(121) 보다 짧게 형성되는데, 그 길이는 몸체(110)의 침식을 허락하는 길이가 된다.The alarm hole 131 is formed to be shorter than the nozzle 121, the length is a length to allow the erosion of the body (110).

즉, 몸체(110)는 경보홀(131) 까지 침식되며, 경보홀(131)을 지나 침식되면 안정상의 이유로 교체되어야 한다.That is, the body 110 is eroded to the alarm hole 131, if eroded past the alarm hole 131 should be replaced for stability reasons.

몸체(110) 교체시 내화물도 같이 교체된다.
When the body 110 is replaced, the refractory is also replaced.

도 1, 도 4 및 도 5에 도시된 바와 같이, 본 발명의 경보장치는 이와 같은 가스 분사구(100)를 이용하여 내화물의 용손 정도를 파악할 수 있도록 한다.As shown in Figures 1, 4 and 5, the alarm device of the present invention can determine the degree of melting loss of the refractory using such a gas injection port (100).

본 발명의 경보장치는 분사구(100), 분사구(100)와 연결되는 교반가스라인(211), 교반가스라인(211) 중간에 설치되는 압력트랜스미터(221) 및 제어수단(231)으로 이루어진다.The alarm device of the present invention is composed of the injection port 100, the stirring gas line 211 connected to the injection port 100, the pressure transmitter 221 and the control means 231 installed in the middle of the stirring gas line 211.

압력트랜스미터(221)는 교반가스라인(211)의 중간에 설치되어 교반가스라인(211)을 유동하는 교반가스(5)의 압력을 감지하고, 감지한 압력데이터를 제어수단(231)으로 전송한다.The pressure transmitter 221 is installed in the middle of the stirring gas line 211 detects the pressure of the stirring gas 5 flowing through the stirring gas line 211, and transmits the detected pressure data to the control means 231. .

압력트랜스미터(221)와 전기적으로 연결되는 제어수단(231)은 압력트랜스미터(221)로부터 입력되는 압력데이터를 체크하여 교반가스(5)의 압력을 체크한다.The control means 231 electrically connected to the pressure transmitter 221 checks the pressure data input from the pressure transmitter 221 to check the pressure of the stirring gas 5.

즉, 제어수단(231)은 압력데이터를 기 설정된 기준데이터와 비교해서 교반가스(5)의 압력이 변동되는지 체크한다.That is, the control means 231 checks whether the pressure of the stirring gas 5 is changed by comparing the pressure data with the preset reference data.

예컨대, 기 설정된 기준데이터가 3bar 이면, 제어수단(231)은 압력트랜스미터(221)로부터 입력되는 압력데이터가 3bar인지 비교 체크한다.For example, if the preset reference data is 3 bar, the control means 231 checks whether the pressure data input from the pressure transmitter 221 is 3 bar.

이처럼 체크 도중, 도 5에 도시된 바와 같이, 분사구(100)가 침식됨으로 인해 길이가 짧아져 경보홀(131)이 개방되면, 교반가스(5)가 노즐(121) 및 경보홀(131) 2곳에서 취입된다.As such, during the check, as shown in FIG. 5, when the warning hole 131 is opened by shortening the length due to the erosion of the injection hole 100, the stirring gas 5 is connected to the nozzle 121 and the alarm hole 131 2. It is blown in place.

그러면, 압력강하현상이 일어나 압력데이터가 기준데이터보다 낮아지고, 제어수단(231)은 즉시 경보신호를 출력하여 알린다.Then, a pressure drop phenomenon occurs, the pressure data is lower than the reference data, and the control means 231 immediately outputs an alarm signal to notify.

예컨대, 상기의 이유로 압력강하현상이 일어나 압력데이터가 2bar로서 기준데이터 3bar 보다 낮으면, 제어수단(231)은 경보신호를 출력하여 관리자에게 알린다.For example, if a pressure drop occurs for the above reason and the pressure data is 2 bar and lower than the reference data 3 bar, the control means 231 outputs an alarm signal to notify the manager.

예컨대, 제어수단(231)은 경보기를 울리거나 램프(LED 등) 등을 점멸시켜 분사구(100)의 침식 정도를 알린다.For example, the control means 231 sounds an erosion of the injection hole 100 by ringing an alarm or flashing a lamp (LED, etc.).

이처럼, 제어수단(231)으로부터 경보신호가 출력되어 분사구(100)의 교체시기가 고지되면, 분사구(100)와 같이 침식되는 내화물의 교체시기도 자연스럽게 고지되는 것이다.As such, when the alarm signal is output from the control means 231 and the replacement time of the injection hole 100 is announced, the replacement time of the refractory that is eroded like the injection hole 100 is also naturally announced.

한편, 교반가스라인(211)의 중간에는 제어수단(231)의 작동 제어를 받는 밸브(241)가 설치된다.On the other hand, in the middle of the stirring gas line 211 is installed a valve 241 to receive the operation control of the control means 231.

밸브(241)는 제어수단(231)의 신호에 따라 작동될 수 있는 전자밸브나 솔레노이드밸브 등이 될 것이다.The valve 241 may be a solenoid valve or a solenoid valve which may be operated according to the signal of the control means 231.

따라서, 제어수단(231)은 경보신호와 함께 밸브(241)를 폐쇄하는 신호를 출력함으로서 교반가스라인(211)을 차단하여 교반가스(5)의 유동을 효율적으로 관리한다.
Therefore, the control means 231 blocks the stirring gas line 211 by outputting a signal for closing the valve 241 with the alarm signal to efficiently manage the flow of the stirring gas (5).

상술한 바와 같이 본 발명에 의하면, 내화물의 용손 정도를 파악함으로써 과침식으로 인한 용강 누출 사고의 위험을 사전에 예방할 수 있다.
As described above, according to the present invention, by grasping the degree of melting loss of the refractory, it is possible to prevent the risk of leakage of the molten steel due to over-erosion in advance.

상기의 본 발명은 바람직한 실시예를 중심으로 살펴보았으며, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자는 본 발명의 본질적 기술 범위 내에서 상기 본 발명의 상세한 설명과 다른 형태의 실시예들을 구현할 수 있을 것이다. 여기서 본 발명의 본질적 기술범위는 특허청구범위에 나타나 있으며, 그와 동등한 범위 내에 있는 모든 차이점은 본 발명에 포함된 것으로 해석되어야 할 것이다.
The present invention has been described with reference to the preferred embodiments, and those skilled in the art to which the present invention pertains to the detailed description of the present invention and other forms of embodiments within the essential technical scope of the present invention. Could be. Here, the essential technical scope of the present invention is shown in the claims, and all differences within the equivalent range will be construed as being included in the present invention.

1:전기로
3:용강
5:교반가스
100:분사구
110:몸체
111,113:단면
121:노즐
131:경보홀
211:교반가스라인
221:압력트랜스미터
231:제어수단
241:밸브1: electrically
3: molten steel
5: stirring gas
100: spray nozzle
110: The body
111,113
121: Nozzle
131: alarm hall
211: stirring gas line
221: pressure transmitter
231: control means
241: valve

Claims (7)

블록 형태를 이루어 전기로 내벽에 적치되는 몸체;
상기 몸체의 내부에 양측 단면들을 관통하여 형성되어 상기 전기로 외부의 교반가스라인과 연결되며, 교반가스를 상기 전기로 내부로 취입(blowing)하는 노즐; 및
상기 교반가스라인과 대면하는 상기 몸체의 단면에 요입 형성되어 상기 교반가스라인과 연결되는 경보홀;을 포함하는,
전기로 중취 교반용 가스 분사구.
A body formed in a block shape and placed on an inner wall of the furnace;
A nozzle formed through both end surfaces of the body to be connected to a stirring gas line outside the electric furnace, and blowing a stirring gas into the electric furnace; And
And a warning hole formed in a cross section of the body facing the stirring gas line and connected to the stirring gas line.
Gas nozzle for deodorization of electric furnace.
제1항에 있어서,
상기 몸체는 내화재질로 이루어지는, 전기로 중취 교반용 가스 분사구.
The method of claim 1,
The body is made of a refractory material, gas injection hole for deodorizing agitation furnace.
제1항에 있어서,
상기 노즐은 상기 몸체의 길이를 따라 경사지게 형성되고, 상기 경보홀은 상기 노즐과 거리를 두고 나란히 형성되는, 전기로 중취 교반용 가스 분사구.
The method of claim 1,
The nozzle is formed to be inclined along the length of the body, the alarm hole is formed side by side with a distance to the nozzle, the electric furnace deodorization agitation gas injection port.
교반가스 취입 노즐과 경보홀을 갖고 전기로 내벽에 적치되는 분사구;
상기 전기로 외부에 배설되어 상기 노즐 및 상기 경보홀과 연결되는 교반가스라인;
상기 교반가스라인의 중간에 설치되어 교반가스의 압력을 감지하는 압력트랜스미터; 및
상기 압력트랜스미터와 전기적으로 연결되어 교반가스의 압력을 체크하는 제어수단;을 포함하는,
경보장치.
An injection hole having an agitated gas blowing nozzle and an alarm hole and placed on an inner wall of the electric furnace;
A stirring gas line disposed outside the electric furnace and connected to the nozzle and the alarm hole;
A pressure transmitter installed in the middle of the stirring gas line to sense a pressure of the stirring gas; And
Control means electrically connected to the pressure transmitter to check the pressure of the stirred gas;
Alarm device.
제4항에 있어서,
상기 교반가스라인의 중간에 설치되어 상기 제어수단의 작동 제어를 받는 밸브를 더 포함하는, 경보장치.
The method of claim 4, wherein
And a valve installed in the middle of the stirring gas line to receive operation control of the control means.
제어수단이, 압력트랜스미터로부터 교반가스의 압력데이터를 전송받아 기 설정된 기준데이터와 비교하며 체크하는 단계; 및
상기 제어수단이, 전기로 내벽에 적치되는 분사구가 침식됨으로 인해 길이가 짧아져 경보홀이 개방됨으로써 상기 압력데이터가 상기 기준데이터보다 낮으면 경보신호를 출력하는 단계;를 포함하는,
경보방법.
The control means, receiving the pressure data of the stirred gas from the pressure transmitter to compare and check with the preset reference data; And
The control means outputs an alarm signal when the pressure data is lower than the reference data by shortening the length due to the erosion of the injection hole deposited on the inner wall of the furnace to open the alarm hole.
Alarm method.
제6항에 있어서,
상기 경보신호를 출력하는 단계에서, 상기 제어수단은 교반가스라인을 차단하기 위해 밸브를 폐쇄하는 신호를 더 출력하는, 경보방법.
The method of claim 6,
Outputting the alarm signal, the control means further outputs a signal for closing the valve to block the agitation gas line.
KR1020110016354A 2011-02-24 2011-02-24 Agitating gas nozzle for medium blowing at electric furnace, alarm apparatus and method using the nozzle KR101246201B1 (en)

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* Cited by examiner, † Cited by third party
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CN104567376A (en) * 2014-12-25 2015-04-29 贵州永兴科技有限公司 Translation opening-type universal electric furnace switch with counting and face recognition function
CN104596268A (en) * 2014-12-25 2015-05-06 贵州永兴科技有限公司 Informationized universal electric furnace having alarming and face recognition functions
CN104613762A (en) * 2014-12-25 2015-05-13 贵州永兴科技有限公司 Informatization wire coil heater with counting and face identification functions

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JPH08199223A (en) * 1995-01-20 1996-08-06 Nippon Steel Corp Gas blowing tuyere
KR19990005932U (en) * 1997-07-22 1999-02-18 김종진 Loss hall hall foreclosure automatic tilting device
KR19990017042U (en) * 1997-10-31 1999-05-25 이구택 Recognition device of exchange time of oxygen lance for converter
KR100862037B1 (en) * 2002-06-28 2008-10-09 주식회사 포스코 Concentration cooling apparatus using temperature detection of side wall of Main Iron Through

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104567376A (en) * 2014-12-25 2015-04-29 贵州永兴科技有限公司 Translation opening-type universal electric furnace switch with counting and face recognition function
CN104596268A (en) * 2014-12-25 2015-05-06 贵州永兴科技有限公司 Informationized universal electric furnace having alarming and face recognition functions
CN104613762A (en) * 2014-12-25 2015-05-13 贵州永兴科技有限公司 Informatization wire coil heater with counting and face identification functions

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