KR200295670Y1 - Heat maintaining device of ladle equipped with movable cover - Google Patents
Heat maintaining device of ladle equipped with movable cover Download PDFInfo
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- KR200295670Y1 KR200295670Y1 KR2019980018091U KR19980018091U KR200295670Y1 KR 200295670 Y1 KR200295670 Y1 KR 200295670Y1 KR 2019980018091 U KR2019980018091 U KR 2019980018091U KR 19980018091 U KR19980018091 U KR 19980018091U KR 200295670 Y1 KR200295670 Y1 KR 200295670Y1
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- ladle
- heat
- cover
- tapping
- cylinder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/005—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like with heating or cooling means
- B22D41/01—Heating means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/50—Pouring-nozzles
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- Mechanical Engineering (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
본 고안은 제강 공정인 전로에서 용강을 취련 완료후 출강하기 전에 전로의 노내 온도를 최대한 낮추기 위해 출강 전 준비된 수강 래들을 보열 버너를 통해 보열하여 수강래들 내부 온도를 높게 하여 보열 효과를 극대화하기 위한 열교환용 가변식 카바가 장착된 수강래들 보열장치에 관한 것이다.The present invention is designed to maximize the thermal effect by raising the internal temperature of the steel ladles by heating the ladles prepared before the tapping to lower the furnace temperature of the converter as much as possible before tapping the molten steel in the steelmaking process. It relates to a ladle lagging device equipped with a variable cover for heat exchange.
본 고안의 수강래들 보열장치는, 전로에서의 용강 취련 완료후 출강전에 전로의 노내 온도를 최대한 낮추도록 출강전 준비된 수강래들(7)을 예열하기 위한 예열버너(5)가 장착된 보열카바(1)를 수강래들(7)에 대해 전,후진 이동시키기 위한 실린더(10)와, 이 실린더(10)에 유체를 공급하기 위한 전기적으로 작동되는 유압 유니트(36) 및 삼방밸브(37a,37b)와, 보열카바(1)의 변형을 방지하도록 배관(6a,6b)을 통해 공급, 배출되는 냉각수로 보열카바(1)를 냉각하기 위한 열교환기구(48)를 내장한 보열카바(1)를 구비하여 되는 것을 특징으로 하는 구성이다.The water ladle lagging device according to the present invention has a heat cover equipped with a preheat burner 5 for preheating the water ladles 7 prepared before tapping so as to lower the furnace temperature of the converter after tapping the molten steel in the converter. A cylinder (10) for moving (1) forward and backward with respect to the ladle (7), an electrically operated hydraulic unit (36) and a three-way valve (37a) for supplying fluid to the cylinder (10); 37b) and the heat-retaining cover 1 incorporating a heat exchange mechanism 48 for cooling the heat-retaining cover 1 with cooling water supplied and discharged through the pipes 6a and 6b to prevent deformation of the heat-retaining cover 1; It is a configuration characterized in that it is provided with.
Description
본 고안은 제강 공정인 전로에서 용강을 취련 완료후 출강하기 전에 전로의 노내 온도를 최대한 낮추기 위해 출강 전 준비된 수강 래들을 보열 버너를 통해 보열하여 수강래들 내부 온도를 높게 하여 보열 효과를 극대화하기 위한 가변식 카바가 장착된 수강래들 보열장치에 관한 것이다.The present invention is designed to maximize the thermal effect by raising the internal temperature of the steel ladles by heating the ladles prepared before the tapping to lower the furnace temperature of the converter as much as possible before tapping the molten steel in the steelmaking process. It relates to a ladle lagging device equipped with a variable cover.
종래 용선을 용강으로 정련하는 제강 공정의 전로 공정에서 전로 노내 온도의 하향화 관리는 제강 공정의 원가 절감 항목 및 해결해야할 주요인으로 관리되는 중요한 지표이며, 이를 위해 후공정의 공정 시간 단축, 설비 사고 예방 등 여러 기술을 적용하고 있다.In the converter process of the steelmaking process of refining molten steel into molten steel, the downward management of the converter furnace temperature is an important indicator that is managed as a cost reduction item of the steelmaking process and a major factor to be solved. Several technologies are applied.
종래기술의 수강래들 보열 장치 구조에서는 도 1 도시와 같이, 카바(100)에 장착된 예열버너(5)를 점화버너(4)를 통해 점화가열하여 수강래들(7)을 가열하는 구성이나, 카바(100)에 장착된 예열버너(5)와 수강래들(7) 사이에 간격이 떨어지고, 수강래들 가열중 카바(100)에 열변형부(101)가 발생하여 열량 부족으로 인해 단시간에 충분한 보열 효과를 얻지 못하며, 또한 수강래들(7) 하부까지는 화염이 미치지 아니하여 보열 효과가 더욱 저조한 문제가 있었다. 특히, 보열중에는 화염이 카바(100)와 수강래들(7) 상부의 틈새로 새어나와 보열 효과가 부족한 문제가 존재하였다.In the structure of the conventional ladle lagging device of the prior art, as shown in FIG. 1, the preheat burner 5 mounted on the cover 100 is ignited and heated through the ignition burner 4 to heat the ladles 7. , The gap between the preheat burner 5 mounted on the cover 100 and the receiving ladle 7 is dropped, and the heat deformation portion 101 is generated on the cover 100 during heating of the receiving ladle in a short time due to lack of heat. There was not a sufficient heat retention effect, and there was also a problem that the heat retention effect was lowered because the flame did not reach the lower portion of the grazing ladles 7. In particular, during heat retention, the flame leaked into the gap between the top of the kava 100 and the riverbeds 7 and there was a problem that the heat retention effect was insufficient.
본 고안은 상기 설명한 종래 기술의 문제점을 해결하기 위하여 이루어진 것으로, 보열중 카바가 최대한 수강래들을 밀봉하도록 하여 보열 효과를 극대화함과 동시에 예열버너의 화염을 수강래들 내로 깊숙이 불어넣어 불필요하게 화염이 수강래들 밖으로 새지 않도록 하고, 카바 설비를 보호하고 카바를 냉각함과 동시에 온수를 생산할 수 있도록 하고, 전로 노내 온도를 하향화하여 제강 공정의 단위 원가를 하향시킨 가변식 카바가 장착된 수강래들 보열 장치를 제공함에 그 목적이 있다.The present invention has been made to solve the problems of the prior art described above, maximizes the thermal effect by ensuring that the cover is as close as possible to the clam during the heat while at the same time blowing the flame of the preheat burner deeply into the graze and unnecessary flame Keep the ladles free of leaks, protect the kava facility, cool the kava and produce hot water at the same time, and reduce the furnace furnace temperature to reduce the unit cost of the steelmaking process. The object is to provide a device.
도 1 은 종래 사용되는 수강래들 보열 구조를 도시한 도면,1 is a view showing a conventional ladle lagging structure used;
도 2 는 본 고안에 따른 수강래들 보열장치를 도시한 도면이다.2 is a view showing the ladle lagging device according to the present invention.
〈도면의 주요부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>
1:보열카바 5:예열버너 6a,6b: 물배관1: heat cover 5: preheat burner 6a, 6b: water piping
7:수강래들 10,20: 실린더 16a,16b: 플렉시블 호스7: water ladle 10, 20: cylinder 16a, 16b: flexible hose
34,35: 유체 배관 36: 유압 유니트 37a,37b: 삼방밸브34, 35: fluid piping 36: hydraulic units 37a, 37b: three-way valve
38,39: 감지수단 48:열교환기구 68: 압력계38, 39: detection means 48: heat exchange mechanism 68: pressure gauge
상기 목적을 달성하기 위한 본 고안의 가변식 카바가 장착된 수강래들 보열 장치는, 전로에서의 용강 취련 완료후 출강전에 전로의 노내 온도를 최대한 낮추도록 출강전 준비된 수강래들(7)을 예열하기 위한 예열버너(5)가 장착된 보열카바(1)를 수강래들(7)에 대해 전,후진 이동시키기 위한 실린더(10)와, 이 실린더(10)에 유체를 공급하기 위한 전기적으로 작동되는 유압 유니트(36) 및 삼방밸브(37a,37b)와, 보열카바(1)의 변형을 방지하도록 배관(6a,6b)을 통해 공급, 배출되는 냉각수로 보열카바(1)를 냉각하기 위한 열교환기구(48)를 내장한 보열카바(1)를 구비하여 되는 것을 특징으로 하는 구성이다.In order to achieve the above object, the ladle lagging device of the present invention equipped with a variable cover is preheated to the ladle 7 prepared before the tapping so as to lower the furnace temperature of the converter before tapping after completion of molten steel in the converter. A cylinder (10) for moving the heating cover (1) equipped with a preheat burner (5) forward and backward with respect to the water ladle (7), and electrically operated to supply fluid to the cylinder (10). Heat exchanger for cooling the thermal insulation cover 1 with the hydraulic unit 36 and the three-way valves 37a and 37b and cooling water supplied and discharged through the pipes 6a and 6b to prevent deformation of the thermal insulation cover 1. It is the structure characterized by including the heat-retaining cover 1 in which the mechanism 48 was built.
이하에서는 양호한 실시예를 도시한 첨부 도면과 관련하여 본 고안을 상세하게 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings showing preferred embodiments.
본 고안의 수강래들 보열장치는, 도 2 도시와 같이, 연소용 가스 배관(2)을 통해 점화버너(4)를 거쳐 발생한 예열버너(5)의 화염이 수강래들(7) 내부로 깊숙이 불어넣어지고 발생한 화염이 보열카바(1) 밖으로 새지 않도록 보열카바(1)를 수강래들(7)에 밀착시키도록 전후진시키는 실린더(10)를 구비하는 데, 이 실린더(10)는 보열카바(1) 하단부에 장착되어 유압 유니트(36)로부터 삼방 밸브(37a,37b)를 거쳐 유체배관(34,35)을 통해 공급되는 유체에 의해 전,후진 작동한다. 삼방밸브(37a,37b) 및 유압유니트(36)는 제어패널(78)에 전기적으로 연결된다.The ladle lagging device of the present invention, as shown in Figure 2, the flame of the preheat burner (5) generated through the ignition burner (4) through the combustion gas pipe (2) deep inside the receiving ladle (7) It is provided with a cylinder (10) for advancing the thermal cover (1) back and forth in close contact with the receiving ladle (7) so that the blown and generated flame does not leak out of the thermal cover (1), the cylinder (10) (1) It is mounted at the lower end and moves forward and backward by the fluid supplied from the hydraulic unit 36 through the three-way valves 37a and 37b and through the fluid pipes 34 and 35. The three-way valves 37a and 37b and the hydraulic unit 36 are electrically connected to the control panel 78.
또한, 수강래들(7)의 슬라이딩 노즐을 개폐 작동시키기 위한 실린더(20)가 수강래들(7)에 장착되어 유압 유니트(36)로부터의 유체 공급에 의해 작동한다.In addition, a cylinder 20 for opening and closing the sliding nozzle of the receiving ladles 7 is mounted to the receiving ladles 7 and operated by the fluid supply from the hydraulic unit 36.
본 고안에서, 실린더(10)의 보열카바(1)측 단부 상방 및 실린더(10)의 대향측 단부 하방에는 제어패널(78)에 전기적으로 연결되어 실린더(10)의 전,후진 작동을 제어하는 감지수단(38,39)이 설치되는데, 감지수단(38)은 예열버너(5)의 작동 정지를 감지하여 보열카바(1)를 후진시킴과 동시에 수강래들(7)의 슬라이딩 노즐 작동용 실린더(20)를 작동시키는 캠리미트이며, 감지수단(39)은 예열버너(5) 작동시 보열카바(1)를 전진시키도록 실린더(10)를 전진시키기 위해 동작하는 주행리미트이다.In the present invention, the upper end of the heat-retaining cover 1 side of the cylinder 10 and the lower end of the opposite side of the cylinder 10 are electrically connected to the control panel 78 to control forward and backward operations of the cylinder 10. Sensing means (38, 39) are installed, the sensing means 38 detects the operation stop of the preheat burner (5) to reverse the thermal cover (1) and at the same time the cylinder for operating the sliding nozzle of the water ladle (7) Cam limit for operating 20, the sensing means 39 is a running limit that operates to advance the cylinder 10 to advance the thermal cover 1 when the preheat burner 5 is operated.
도 2 도시와 같이, 본 고안에서는 수강래들(7) 예열중 발생하는 복사열로 인해 보열카바(1)가 변형되는 것을 방지하고 온수를 생산하기 위해 열교환기구(48)가 보열카바(1)에 내장되는데, 이 열교환기구(48)에는 배관 중간이 플렉시블 호스(16a,16b)로 연결된 물 배관(6a,6b)을 통해 냉각수가 공급되고, 온수가 배출되며, 배관(6a)에는 제어패널(78)에 전기적으로 연결되어 냉각수 압력을 진단하는 압력계(68)가 설치된다.As shown in FIG. 2, in the present invention, the heat exchange mechanism 48 is connected to the heat insulation cover 1 to prevent the heat insulation cover 1 from being deformed due to radiant heat generated during preheating of the ladles 7 and to produce hot water. The heat exchange mechanism 48 is supplied with coolant through the water pipes 6a and 6b connected to the middle of the pipe by the flexible hoses 16a and 16b, and hot water is discharged, and the control panel 78 is connected to the pipe 6a. A pressure gauge 68 electrically connected to the diaphragm for diagnosing the coolant pressure.
이하에서는 상기와 같이 구성된 본 고안의 수강래들 보열장치의 작동을 설명한다.Hereinafter will be described the operation of the ladle lagging apparatus of the present invention configured as described above.
예열버너(5)를 점화하여 수강래들(7)을 예열작동시는, 감지수단(39)이 작동되고, 삼방밸브(37a,37b)가 절환작동하여 유체 배관(35)을 통해 유체가 실린더(10)에 공급되어 보열카바(1)를 전진작동시킨다.When the preheat burner 5 is ignited to preheat the water ladle 7, the sensing means 39 is operated, and the three-way valves 37a and 37b are switched to operate the fluid through the fluid pipe 35. Supplied to (10) to advance the thermal cover (1).
이때, 슬라이딩 노즐 작동 실린더(20)는 슬라이딩 노즐을 개방하도록 작동되며, 유압유니트(36)가 오프되고, 열교환기구(48)에 공급될 냉각수의 압력과 온도가 이상 없으면 예열버너(5)가 작동되어 수강래들(7)을 예열한다.At this time, the sliding nozzle operating cylinder 20 is operated to open the sliding nozzle, the hydraulic unit 36 is turned off, and the preheat burner 5 is operated if the pressure and temperature of the coolant to be supplied to the heat exchange mechanism 48 are abnormal. To preheat the pools 7.
그리고, 보열시 발생하는 고열의 배가스는 수강래들(7)의 슬라이딩 노즐이 개방된 상태이므로 이를 통해 밖으로 배출되며, 예열버너(5)가 수강래들(7) 깊숙이 전진된 상태에서 작동하므로 화염이 보열카바(1)와 수강래들(7) 틈새로 새지 않아 보열 효과가 양호하며, 주위 설비에 영향을 미치지 아니한다.In addition, the high-temperature exhaust gas generated during heat retention is discharged through the sliding nozzle of the water ladle 7 because it is open, and the preheat burner 5 operates in a state where the water ladle 7 is advanced, and thus flames. It does not leak into the gap between the heat-retaining cover 1 and the water-receiving ladle 7, so that the heat-retaining effect is good and does not affect the surrounding equipment.
예열시 발생되는 복사열에 의해 열교환기구(48) 내부를 유동하는 냉각수는 가열되어 온수로 배출됨과 동시에 보열카바(1)가 냉각되어 변형이 방지될 수 있다.Cooling water flowing in the heat exchange mechanism 48 by the radiant heat generated during preheating is heated and discharged into hot water, and at the same time, the insulation cover 1 is cooled to prevent deformation.
예열버너 정지시는, 예열버너(50의 소화에 따라 감지수단(38)이 이를 감지하여 유압 유니트(36)를 재차 작동시키고 삼방밸브(37a,37b)를 절환하여 실린더(10)를 후진시킨다.When the preheat burner is stopped, the detection means 38 detects the preheat burner 50 according to the extinguishing of the preheat burner 50 and operates the hydraulic unit 36 again and switches the three-way valves 37a and 37b to reverse the cylinder 10.
이와 동시에 수강래들(7)의 슬라이딩 노즐 작동용 실린더(20)도 슬라이딩 노즐을 닫도록 작동한다.At the same time, the sliding nozzle operating cylinder 20 of the receiving ladle 7 also operates to close the sliding nozzle.
이어서, 재차, 삼방밸브(37a,37b)가 절환 작동하며, 유압 유니트(36)가 오프되고, 감지수단(39)이 실린더(10)의 후진 작동 말단을 감지하면 냉각수 공급을 중단하여 작동을 완료한다.Subsequently, the three-way valves 37a and 37b switch over again, the hydraulic unit 36 is turned off, and when the sensing means 39 detects the reverse operating end of the cylinder 10, the cooling water supply is stopped to complete the operation. do.
상기 설명한 바와 같은 본 고안에 의하면, 미리 준비된 수강래들을 보열시 화염이 수강래들 깊숙이 들어가 예열 효과를 향상시키며, 화염이 수강래들 외측으로 새지 않아 설비 고장과 열적 변형을 방지하여 설비 이용의 효율화를 도모할 수 있으며, 수강래들의 효과적인 예열을 통해 전로 노내 온도를 하향화할 수 있어서 제강 공정의 원가 절감을 극대화할 수 있는등 유용한 효과가 달성된다.According to the present invention as described above, when pre-prepared water ladles, the flames go deep into the water ladles to improve the preheating effect, and the flames do not leak to the outside of the water ladles to prevent equipment failure and thermal deformation, thereby improving the use of equipment. Through the effective preheating of the steel bars, the furnace temperature can be lowered, thereby maximizing the cost reduction of the steelmaking process.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019980018091U KR200295670Y1 (en) | 1998-09-22 | 1998-09-22 | Heat maintaining device of ladle equipped with movable cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019980018091U KR200295670Y1 (en) | 1998-09-22 | 1998-09-22 | Heat maintaining device of ladle equipped with movable cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20000006835U KR20000006835U (en) | 2000-04-25 |
| KR200295670Y1 true KR200295670Y1 (en) | 2003-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019980018091U Expired - Fee Related KR200295670Y1 (en) | 1998-09-22 | 1998-09-22 | Heat maintaining device of ladle equipped with movable cover |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008154595A3 (en) * | 2007-06-11 | 2009-01-29 | Nucor Corp | Method of preheating steelmaking ladles |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100854364B1 (en) * | 2002-07-10 | 2008-09-02 | 주식회사 포스코 | Fluid piping valve having the function of removing internal pressure of connecting pipe |
| KR100835105B1 (en) * | 2006-11-08 | 2008-06-03 | 주식회사 포스코 | Melting temperature correction device and method |
-
1998
- 1998-09-22 KR KR2019980018091U patent/KR200295670Y1/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008154595A3 (en) * | 2007-06-11 | 2009-01-29 | Nucor Corp | Method of preheating steelmaking ladles |
| US8142541B2 (en) | 2007-06-11 | 2012-03-27 | Nucor Corporation | Method of preheating steelmaking ladles |
| US8585961B2 (en) | 2007-06-11 | 2013-11-19 | Nucor Corporation | Preheaters for preheating steelmaking ladles |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20000006835U (en) | 2000-04-25 |
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