KR20000039994A - Sub-lance of converter - Google Patents
Sub-lance of converter Download PDFInfo
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- KR20000039994A KR20000039994A KR1019980055513A KR19980055513A KR20000039994A KR 20000039994 A KR20000039994 A KR 20000039994A KR 1019980055513 A KR1019980055513 A KR 1019980055513A KR 19980055513 A KR19980055513 A KR 19980055513A KR 20000039994 A KR20000039994 A KR 20000039994A
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- South Korea
- Prior art keywords
- gas
- lance
- sub
- converter
- furnace
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Classifications
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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
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/4673—Measuring and sampling devices
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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
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/4606—Lances or injectors
- C21C2005/4626—Means for cooling, e.g. by gases, fluids or liquids
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- 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
- F27D2003/168—Introducing a fluid jet or current into the charge through a lance
- F27D2003/169—Construction of the lance, e.g. lances for injecting particles
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
Description
본 발명은 전로의 서브랜스(Sub-Lance)에 관한 것으로, 특히 주기능인 측온 및 시료채취작업뿐만아니라 퍼지 및 냉각 그리고 로내 배가스의 2차연소기능까지 수행할 수 있는 전로의 서브랜스(Sub-Lance)에 관한 것이다.The present invention relates to a sub-lance of a converter, and in particular, a sub-lance of a converter capable of performing not only the measurement and sampling operations, which are the main functions, but also the secondary combustion functions of purge and cooling and exhaust gas in the furnace. It is about.
일반적으로, 서브랜스(Sub-Lance)는 전로의 취련중 로내의 용강온도를 측정하고, 용강의 성분을 분석하기 위하여 시료를 채취하는 장치이다.In general, a sub-lance is a device for measuring a molten steel temperature in a furnace during drilling of a converter and collecting a sample to analyze a component of the molten steel.
이때, 종래의 서브랜스는 도1에 도시한 바와같이 모터(12)의 작동에 따라 드럼(13)의 로프(17)가 풀리면서 하강하게 되고, 침적홀(19)을 거쳐 로구(6)을 통해 프로브(8)가 전로(11)의 용강(7)에 침적된다.At this time, the conventional sub lance is lowered while the rope 17 of the drum 13 is released in accordance with the operation of the motor 12, as shown in FIG. Through this, the probe 8 is deposited in the molten steel 7 of the converter 11.
여기서, 종래의 서브랜스는 로내의 용강측온작업을 하거나 사용되는 프로브(8)의 종류에 따라 용강의 산소농도와 탕면측정 그리고 용강의 성분을 분석하기 위하여 시료를 채취하게 된다.Here, the conventional sub lance is sampled to perform the temperature measurement of the molten steel in the furnace or to measure the oxygen concentration and the water surface of the molten steel according to the type of the probe 8 used.
그러나, 서브랜스의 용강측정작업시 전로(11) 로내에 발생되는 화염 및 분진(18)는 침적홀(19)을 통해 대기로 방출되면서 대기오염을 유발시키고, 로내에 정체되어 있는 일산화탄소 등의 배가스는 용강(7)의 품질이 악화시키게 된다.However, the flame and dust 18 generated in the furnace 11 furnace during the molten steel measurement work of the sub lance is released into the atmosphere through the deposition hole 19 to cause air pollution, and the exhaust gas such as carbon monoxide stagnated in the furnace. The deterioration of the quality of the molten steel (7).
이때, 서브랜스의 용강측정작업시 발생되는 상기의 문제점을 개선하기 위한 별도의 장치가 없고, 더욱이 서브랜스에도 이러한 문제점을 제거할 수 있는 별도의 기능이 내장되어 있지 않다.At this time, there is no separate device for improving the above problems caused during the molten steel measuring operation of the sub-lance, and further, the sub-lance does not have a separate function for eliminating such a problem.
본 발명은 주기능인 측온 및 시료채취작업뿐만아니라 퍼지 및 냉각 그리고 로내 배가스의 2차연소기능까지 수행할 수 있는 전로의 서브랜스(Sub-Lance)를 제공함에 그 목적이 있다.It is an object of the present invention to provide a sub-Lance of a converter capable of performing purging and cooling as well as secondary combustion functions of flue gas in the furnace as well as measurement and sampling operations as main functions.
도1은 종래의 서브랜스에 의한 용강측온작업을 나타내는 작업상태도,1 is a working state diagram showing a molten steel measuring operation by a conventional sub lance,
도2는 종래의 전로 서브랜스를 나타내는 사시도,2 is a perspective view showing a conventional converter sub lance,
도3은 본 발명에 따른 전로의 서브랜스를 나타내는 사시도이다.3 is a perspective view showing a sub lance of a converter according to the present invention;
도면의 주요부분에 대한 부호의 설명Explanation of symbols for main parts of the drawings
1: 제어기 4: 랜스본체 4-1: 냉각재킷 4-2: 드레인재킷 4-3: 보상도선재킷 6: 로구 7: 용강 8: 프로브 9: 노즐 11: 전로 12: 모터 13: 드럼 14: 캠리미트 15: 안내빔 16: 대차 17: 로프 18: 분진 및 화염 19: 침적홀 20: 보상도선 21: 홀더 22: 점검홀DESCRIPTION OF SYMBOLS 1: Controller 4: Lance body 4-1: Cooling jacket 4-2: Drain jacket 4-3: Compensation conductor jacket 6: Locus 7: Molten steel 8: Probe 9: Nozzle 11: Converter 12: Motor 13: Drum 14: Camry Meat 15: Guiding beam 16: Truck 17: Rope 18: Dust and flame 19: Deposition hole 20: Compensation lead 21: Holder 22: Inspection hole
상기한 목적을 달성하기 위하여 본 발명은 내측에 냉각재킷, 드레인재킷, 보상도선재킷을 형성하는 본체의 하부에 홀더가 끼워지고, 침적홀을 통해 전로의 용강에 침적되는 프로브가 상기 홀더에 결합되는 전로의 서브랜스에 있어서, 자동변에 의해 개폐되는 산소취입라인과 배가스흡입라인이 상기 본체의 상단부에 상기 보상도선재킷과 연결되도록 관통되고, 상기 배가스흡입라인에 집가스탱크와 가스분석기가 연결되는 가스분사흡입부와; 상기 배가스흡입라인의 하부측에 위치하도록 상기 본체에 끼워지면서 그 외주면 일측에 자동변에 의해 개폐되는 가스취입라인이 관통되고, 그 하단면을 따라 분사노즐이 설치되는 퍼지링과; 상기 본체의 외주면 중단부에 상기 보상도선재킷과 연결되도록 방사상으로 관통되고, 상기 프로브의 용강침적시 전로의 로내에 산소를 분사하거나 로내의 배가스를 흡입하는 분사흡입관으로 구성되는 것을 특징으로 하는 전로의 서브랜스를 제공한다.In order to achieve the above object, the present invention is a holder is fitted to the lower portion of the main body to form a cooling jacket, drain jacket, compensation wire jacket inside, and the probe is deposited on the molten steel of the converter through the deposition hole is coupled to the holder In the sub lance of the converter, the oxygen intake line and the exhaust gas suction line which is opened and closed by the automatic valve is passed through the upper end of the main body to be connected to the compensation wire jacket, the exhaust gas suction line is connected to the gas tank and the gas analyzer A gas injection suction unit; A purge ring fitted to the main body so as to be positioned at the lower side of the exhaust gas suction line, the gas blowing line being opened and closed by an automatic valve on one side of the outer circumferential surface thereof, and having a spray nozzle installed along the bottom surface thereof; A radially penetrating radially penetrating portion of the outer peripheral surface of the main body to be connected to the compensation wire jacket, the injection suction pipe is configured to inject oxygen into the furnace of the converter or suck the exhaust gas in the furnace during the molten steel deposition of the probe Provide a sublance.
도면을 참조하여 본 발명의 구성을 설명한다.The configuration of the present invention will be described with reference to the drawings.
도3은 본 발명에 따른 전로의 서브랜스를 나타내는 사시도이다.3 is a perspective view showing a sub lance of a converter according to the present invention;
서브랜스의 본체(4)는 동심원의 3중층 즉, 바깥쪽으로부터 냉각재킷(4-1), 드레인재킷(4-2), 보상도선재킷(4-3)이 내측에 형성되어 있다.The main body 4 of the sub lance has a concentric triple layer, that is, a cooling jacket 4-1, a drain jacket 4-2, and a compensation conductor jacket 4-3 formed from the outside.
이때, 급수관(21-1)을 통해 공급되는 냉각수는 냉각재킷(4-1)을 흐르면서 전로(11)의 용강(7)에 노출된 본체(4)의 외주면을 냉각시키게 되고, 다시 냉각재킷(4-1)과 연결되어 있는 드레인재킷(4-2)을 순환하면서 배수관(21-2)을 통해 배출된다.At this time, the cooling water supplied through the water supply pipe 21-1 cools the outer circumferential surface of the main body 4 exposed to the molten steel 7 of the converter 11 while flowing the cooling jacket 4-1, and again, the cooling jacket ( It is discharged through the drain pipe 21-2 while circulating the drain jacket 4-2 connected to 4-1).
또한, 본체(4)의 내측 중앙을 따라 형성되는 보상도선재킷(4-3)에는 프로브(8)의 측온데이터를 전송하는 보상도선(20)이 내장되어 있다.In addition, the compensation wire jacket 4-3 formed along the inner center of the main body 4 includes a compensation wire 20 for transmitting the temperature measurement data of the probe 8.
그리고, 본체(4)의 외주면 상단부에는 산소취입라인(50)과 배가스흡입라인(51)이 본체(4)의 보상도선재킷(4-3)에 연결되도록 관통되어 있고, 산소취입라인(50)과 배가스흡입라인(51)에는 제어기(1)에 의해 제어되는 자동변(56,57)이 설치되어 있다.In addition, an oxygen blowing line 50 and an exhaust gas suction line 51 penetrate through the upper end of the outer circumferential surface of the main body 4 so as to be connected to the compensating wire jacket 4-3 of the main body 4, and the oxygen blowing line 50. And the exhaust gas suction line 51 is provided with automatic valves 56 and 57 controlled by the controller 1.
특히, 배가스흡입라인(51)는 모터(60-1)에 의해 작동되는 집가스탱크(60)에 연결되어 있고, 이 집가스탱크(60)에 저장된 전로(11)의 배가스는 배출관(90)을 통해 대기로 배출되거나 가스분석기(59)로 공급되어 성분분석이 이루어진다.In particular, the exhaust gas suction line 51 is connected to a collecting gas tank 60 operated by a motor 60-1, and the exhaust gas of the converter 11 stored in the collecting gas tank 60 is discharge pipe 90. Through the discharge to the atmosphere or supplied to the gas analyzer 59 is a component analysis.
한편, 다수의 분사흡입관(55)은 랜스본체(4)의 중단부에 방사상방향으로 관통 고정되면서 외부와 보상도선재킷(4-3)을 연결하게 되고, 특히 서브랜스의 용강측온작업시 전로(11)의 상부측에 산소를 분사하는 동시에 서브랜스의 용강측온작업완료시점에 맞춰 전로의 배가스를 흡입하게 된다.On the other hand, the plurality of injection suction pipes 55 are connected to the outside and the compensation wire jacket (4-3) while the radially penetrating fixed to the stop portion of the lance body (4), in particular during the molten steel temperature measurement work of the sub-lance ( Injecting oxygen to the upper side of 11) and inhaling exhaust gas from the converter at the time of completion of the molten steel temperature measurement work of the sub lance.
그리고, 배가스흡입라인(51)과 분사흡입관(55) 사이에 위치하도록 랜스본체(4)의 외주면에 끼워지는 퍼지링(Purge Ring)(53)에는 그 외주면 일측에 자동변(58)에 의해 개폐되는 질소취입라인(52)이 관통되어 있다.The purge ring 53, which is fitted to the outer circumferential surface of the lance body 4 so as to be positioned between the exhaust gas suction line 51 and the injection suction pipe 55, is opened and closed by an automatic valve 58 on one side of the outer circumferential surface thereof. Nitrogen blowing line 52 is penetrated.
이때, 퍼지링(53)의 하단면을 따라 설치되는 분사노즐(54)은 질소취입라인(52)을 통해 퍼지링에 취입되는 질소가스를 하부측의 랜스침적롤(19)을 향해 분사함으로써 랜스침적롤(19)을 통한 분진 및 화염(18)의 분출을 차단하게 된다.At this time, the injection nozzle 54 is installed along the lower surface of the purge ring 53, the lance by spraying nitrogen gas injected into the purge ring through the nitrogen blowing line 52 toward the lance deposition roll 19 of the lower side. Blocking of the dust and flame 18 through the immersion roll 19 is blocked.
이하, 본 발명의 작용을 설명한다.The operation of the present invention will be described below.
전로(11) 로내의 용강온도 및 시료채취를 위해 서브랜스의 프로브(8)를 전로의 로구(6)를 통해 용강(7)에 침적시키게 되는데, 이때 제어기(1)에서 모터(12)를 작동시켜 드럼(13)의 로프(17)를 풀게된다.The probe (8) of the sub-lance is deposited on the molten steel (7) through the furnace (6) for the molten steel temperature and sampling in the converter (11), whereby the motor (1) is operated in the controller (1). The rope 17 of the drum 13 is loosened.
그리고, 대차(16)가 안내빔(15)을 따라 하강되면 서브랜스의 프로브(8)가 침적홀(19)을 통해 전로(11)의 용강(7)에 침적된다.When the trolley 16 is lowered along the guide beam 15, the probe 8 of the sub lance is deposited on the molten steel 7 of the converter 11 through the deposition hole 19.
여기서, 캠리미트(14)는 측정된 모터(12)의 회전수로부터 서브랜스의 프로브(8)가 전로용강(7)에 침적되었음을 감지하게 되고, 캠리미트의 작동을 감지한 제어기(1)에서 모터(12)를 정지시키면서 자동변(56)을 개방시키게 되면 산소취입라인(50)을 통해 산소가 공급된다.Here, the cam limit 14 detects that the probe 8 of the sub lance has been deposited on the converter steel 7 from the measured number of revolutions of the motor 12, and the controller 1 detects the operation of the cam limit. When the automatic valve 56 is opened while the motor 12 is stopped, oxygen is supplied through the oxygen blowing line 50.
이때, 산소취입라인(50)을 통해 취입되는 산소는 랜스본체(4)의 보상도선재킷(4-3)으로 공급된 후, 분사흡입관(55)을 통해 로구(6)의 주위로 분사된다.At this time, the oxygen blown through the oxygen blowing line 50 is supplied to the compensating wire jacket 4-3 of the lance body 4, and then injected into the circumference of the furnace 6 through the injection suction pipe (55).
그리고, 로구(6)의 주위로 분사된 산소는 전로(11)의 로내에 정체되어 있는 배가스중 일산화탄소를 연소시키게 되고, 여기서 발생되는 연소열은 로내의 용강(7)온도를 보상해주게 된다.Oxygen injected around the furnace port 6 burns carbon monoxide in the flue gas stagnant in the furnace of the converter 11, and the heat of combustion generated here compensates for the temperature of the molten steel 7 in the furnace.
한편, 서브랜스의 용강측온 및 시료채취작업이 완료되면 제어기(1)에서 모터(12)를 작동시켜 서브랜스를 상승시키게 되고, 동시에 자동변(56)을 닫아 산소취입을 차단하면서 모터(60-1)와 가스분석기(59)를 작동시키게 된다.On the other hand, when the molten steel temperature measurement and sampling operation of the sub lance is completed, the controller 1 operates the motor 12 to raise the sub lance, and at the same time closes the automatic valve 56 to cut off the oxygen injection. 1) and the gas analyzer 59 is operated.
이때, 자동변(57)을 개방시키게 되면 집가스탱크(60)의 흡입력에 의해 전로(11)의 로내에 정체되어 있던 연소가스 및 배가스가 분사흡입관(55)을 통해 흡입된다.At this time, when the automatic valve 57 is opened, the combustion gas and the exhaust gas which are stagnated in the furnace of the converter 11 by the suction force of the gas collecting tank 60 are sucked through the injection suction pipe 55.
여기서, 분사흡입관(55)을 통해 보상도선재킷(4-3)내로 흡입된 로내의 연소가스 및 배가스는 개방된 가스흡입라인(51)을 통해 집가스탱크(60)에 저장된 후, 가스분석기(59)에 일부 유입되어 성분분석이 이루어지고, 나머지는 배출관(90)을 통해 대기로 방출된다.Here, the combustion gas and the exhaust gas in the furnace sucked into the compensation wire jacket 4-3 through the injection suction pipe 55 are stored in the collecting gas tank 60 through the open gas suction line 51, and then the gas analyzer ( 59 is partially introduced into the component analysis is performed, the rest is discharged to the atmosphere through the discharge pipe (90).
그리고, 상승되는 서브랜스의 본체(4)가 침적홀(19)을 빠져나오는 시점을 캠리미트(14)에서 감지하여 제어기(1)에 전송하게 되면 제어기(1)에서 자동변(58)을 개방하여 질소퍼지라인(52)을 통해 질소가스를 취입하게 된다.When the main body 4 of the rising sub lance exits the deposition hole 19, the cam limit 14 detects and transmits it to the controller 1, and the controller 1 opens the automatic valve 58. The nitrogen gas is blown through the nitrogen purge line 52.
이때, 질소퍼지라인(52)을 통해 취입되는 질소가스는 퍼지링(53)을 거쳐 분사노즐(54)로 하향 분사되면서 침적홀(19)을 통해 상부로 방출되는 로내의 화염 및 분진(18)을 차단하게 된다.At this time, the nitrogen gas blown through the nitrogen purge line 52 is injected downward through the purge ring 53 to the injection nozzle 54 while the flame and dust 18 in the furnace discharged upward through the deposition hole 19. Will block.
여기서, 모터(12)의 회전수를 측정하는 캠리미트(14)에서 서브랜스의 상승완료를 감지하게 되면 제어기(1)에서 모터(12)를 정지시키는 동시에 자동변(58)을 닫아 질소취입을 차단하게 되고, 이로써 일련의 서브랜스작업이 완료된다.Here, when the cam limit 14 which measures the rotation speed of the motor 12 detects the completion of the sub lance, the controller 1 stops the motor 12 and closes the automatic valve 58 to perform nitrogen injection. This will cause the series of sublances to complete.
본 고안은 용강측정기능뿐만아니라 질소가스를 퍼지함으로써 전로의 화염 및 분진에 의한 환경오염을 방지하고, 산소가스를 취입하여 로내의 정체된 배가스를 연소시키고, 이 연소열로 용강의 온도를 보상함으로써 용강의 품질을 향상시키며, 로내의 가스를 분석하여 로내의 반응을 예측할 수 있는 효과를 제공하게 된다.The present invention not only measures molten steel, but also purges nitrogen gas to prevent environmental pollution caused by flames and dust in the converter, injects oxygen gas to combust stagnant exhaust gas in the furnace, and compensates the temperature of molten steel with the combustion heat. It improves the quality of the furnace and analyzes the gas in the furnace to provide the effect of predicting the reaction in the furnace.
Claims (1)
Priority Applications (1)
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KR1019980055513A KR20000039994A (en) | 1998-12-16 | 1998-12-16 | Sub-lance of converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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KR1019980055513A KR20000039994A (en) | 1998-12-16 | 1998-12-16 | Sub-lance of converter |
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KR20000039994A true KR20000039994A (en) | 2000-07-05 |
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KR1019980055513A KR20000039994A (en) | 1998-12-16 | 1998-12-16 | Sub-lance of converter |
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KR100768313B1 (en) * | 2001-11-12 | 2007-10-17 | 주식회사 포스코 | Connecting holder of a sub-lance and a probe |
KR200450703Y1 (en) * | 2008-09-29 | 2010-10-22 | 현대제철 주식회사 | device for measuring temperature of molten steel in electric furnace |
KR101249440B1 (en) * | 2010-12-29 | 2013-04-03 | 우진 일렉트로나이트(주) | A probe holder preventing slag attachment |
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WO2014098427A1 (en) * | 2012-12-18 | 2014-06-26 | 주식회사 포스코 | Lance, and fishing method using same |
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KR100768313B1 (en) * | 2001-11-12 | 2007-10-17 | 주식회사 포스코 | Connecting holder of a sub-lance and a probe |
KR200450703Y1 (en) * | 2008-09-29 | 2010-10-22 | 현대제철 주식회사 | device for measuring temperature of molten steel in electric furnace |
KR101249440B1 (en) * | 2010-12-29 | 2013-04-03 | 우진 일렉트로나이트(주) | A probe holder preventing slag attachment |
KR101329512B1 (en) * | 2011-12-27 | 2013-11-14 | 주식회사 우진 | Lance assembly device of Automatic temperature measurement device |
WO2014098427A1 (en) * | 2012-12-18 | 2014-06-26 | 주식회사 포스코 | Lance, and fishing method using same |
KR101424638B1 (en) * | 2012-12-18 | 2014-08-01 | 주식회사 포스코 | Lance and the converter operation method using the same |
CN104870661A (en) * | 2012-12-18 | 2015-08-26 | 株式会社Posco | Lance, and fishing method using same |
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