KR200250763Y1 - Entrance side door of converter with cooling system and automatic switchgear - Google Patents

Entrance side door of converter with cooling system and automatic switchgear Download PDF

Info

Publication number
KR200250763Y1
KR200250763Y1 KR2019970020203U KR19970020203U KR200250763Y1 KR 200250763 Y1 KR200250763 Y1 KR 200250763Y1 KR 2019970020203 U KR2019970020203 U KR 2019970020203U KR 19970020203 U KR19970020203 U KR 19970020203U KR 200250763 Y1 KR200250763 Y1 KR 200250763Y1
Authority
KR
South Korea
Prior art keywords
door
side door
converter
opening
purge
Prior art date
Application number
KR2019970020203U
Other languages
Korean (ko)
Other versions
KR19990006715U (en
Inventor
김해원
Original Assignee
이구택
포항종합제철 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 이구택, 포항종합제철 주식회사 filed Critical 이구택
Priority to KR2019970020203U priority Critical patent/KR200250763Y1/en
Publication of KR19990006715U publication Critical patent/KR19990006715U/en
Application granted granted Critical
Publication of KR200250763Y1 publication Critical patent/KR200250763Y1/en

Links

Classifications

    • 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
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/18—Door frames; Doors, lids, removable covers
    • F27D1/1858—Doors
    • 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
    • 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
    • C21C5/4646—Cooling arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)

Abstract

본 고안은 제강공정에서 전로의 출강측에 설치되는 출강측 도어(Tapping Side Door)에 관한 것으로서 특히 고압냉각수 탱크(50)와 냉각수 배관(65)으로 이루어진 여닫이 형태의 출강측 도어(90)와 상기 냉각수의 회수용 탱크(53)와 냉각수의 회수 라인(61)에 연결된 유량검출단(68)과 유량계(69)로 구성된 냉각장치부와, 상기 여닫이 출강측 도어(90)의 상단에 설치되며 레일홈(60)과 상기 레일홈(60)의 양단에 완충장치(60-1)가 설치된 레일케이스(59)와 상기 레일홈(60)에 취합되는 구동롤러(56)가 설치된 다수개의 구동모터(54)와 연결되는 MCC(88)가 설치되며 상기 출강측 도어(90)의 하단 양측면에 설치된 도어스토퍼(78,84)와 그 평행선상의 일정지점에 설치된 레버식 리미트(81,85)로 구성된 도어 개폐부와, 상기 출강측 도어의 전면부에 다수개의 퍼지노즐(74)을 가진 퍼지링(73)이 설치되며 상기 퍼지링(73)과 연결된 질소콘트롤 밸브(83)로 구성된 질소 퍼지라인부와, 상기의 모든 동작을 제어하는 PLC(70)로 이루어진 것을 특징으로 하는 냉각장치 및 자동개폐장치가 설치된 전로의 출강측 도어에 관한 것이다.The present invention relates to a tapping side door installed on the tapping side of a converter in a steelmaking process, and in particular, a case type tapping side door 90 consisting of a high pressure cooling water tank 50 and a cooling water pipe 65 and the A cooling device unit comprising a flow rate detecting end 68 and a flow meter 69 connected to the tank 53 for recovery of the coolant and the recovery line 61 of the coolant, and installed on the upper end of the opening and closing door 90 A plurality of driving motors provided with a rail case 59 having a shock absorber 60-1 installed at both ends of the groove 60 and the rail groove 60, and a driving roller 56 assembled to the rail groove 60. MCC (88) connected to the 54 is installed, the door consisting of door stoppers (78, 84) provided on both sides of the lower side of the exit side door 90 and the lever-type limit (81, 85) installed at a certain point on the parallel line A purge ring 73 having an opening and closing portion and a plurality of purge nozzles 74 at the front side of the exit side door. ) Is installed and the nitrogen purge line unit consisting of a nitrogen control valve (83) connected to the purge ring (73), and a cooling device and an automatic switching device, characterized in that consisting of a PLC (70) for controlling all the above operations It relates to the exit side door of the converter.

상기와 같은 본 고안은 설비의 내구력 증가와 도어의 개폐시 요구되던 불필요한 장비와 시간을 절감할 수 있으며 시료채취시에도 고열과 화염으로부터 작업자를 보호하여 안전성 및 생산성의 향상을 가져오는 효과를 제공한다.The present invention as described above can reduce the unnecessary equipment and time required to increase the durability of the equipment and opening and closing of the door, and provides an effect of improving the safety and productivity by protecting the worker from high heat and flames even during sampling. .

Description

냉각장치 및 자동개폐장치가 설치된 전로의 출강측 도어Exit side door of converter with cooling system and automatic switchgear

본 고안은 제강공정에서 전로의 출강측에 설치되는 출강측 도어(Tapping Side Door)에 관한 것으로서 특히 전로의 출강작업중 전로 노구로부터 방출되는 고열에 의하여 도어가 변형되는 것을 방지하기 위하여 냉각장치 및 자동개폐장치가 설치된 전로의 출강측 도어에 관한 것이다.The present invention relates to a tapping side door installed on the tapping side of the converter in the steelmaking process, and in particular, to prevent the door from being deformed by the high temperature emitted from the converter furnace during the tapping operation of the converter. A tapping side door of a converter in which a device is installed.

종래에 경첩에 의해 지지되며 철판으로 만들어진 전로 출강측 도어는 용강의 출강작업중 노구로부터 발생하는 고열로 인한 변형이 심하고 중량물인 도어를 개폐하기 위해서는 지게차를 이용하여야 하는 등의 문제점과 시료를 채취하기위한 작업이 고열과 화염 및 더스트에 의해 안전재해의 위험이 높은 문제점이 있었다.Conventionally supported by hinges and made of steel plate, the converter tapping side door is severely deformed due to the high heat generated from the furnace port during tapping operation of molten steel, and it is necessary to use a forklift to open and close the heavy door and to collect the sample. The work had a high risk of safety accidents due to high temperature, flames and dust.

상기와 문제점을 해결하기 위하여 본 고안은 전로 출강측 도어에 냉각장치와 자동개폐장치가 설치되고 시료채취시 고열로 부터 작업자를 보호하기 위한 질소퍼지라인(N2Purge Line)이 설치된 출강측 도어를 제공하는 것을 그 목적으로 한다.In order to solve the above problems and problems, the present invention has a cooling device and an automatic opening and closing device installed on the exit door of the converter and a nitrogen exit line (N 2 purge line) installed to protect the worker from high temperature during sampling. Its purpose is to provide.

도 1은 종래의 출강측 도어의 개폐를 나타낸 사시도,1 is a perspective view showing the opening and closing of a conventional tapping side door,

도 2는 전로가 출강측으로 기울어진 상태도와 출강측 도어를 개폐하는 작업상태를 나타낸 사시도,2 is a perspective view showing a working state in which a converter is inclined toward the tapping side and a tapping side door;

도 3은 본 고안의 구성요소를 도시한 개략도,3 is a schematic view showing the components of the present invention,

도 4는 본 고안의 전체 개략도이다.4 is an overall schematic view of the present invention.

<도면의 주요부분에 사용된 부호의 설명><Description of the code used in the main part of the drawing>

1 : 전로, 2 : 출강구, 8 : 수강래들, 9 : 내화벽, 11 : 종래 출강측 도어, 12 : 시료 채취구, 14 : 지게차, 50 : 고압 냉각수 탱크, 52 : 펌프, 53 : 냉각수 회수 탱크, 54 : 구동모터, 56 : 롤러, 59 : 레일케이스, 60 : 레일홈, 60-1 : 완충장치, 61 : 냉각수 회수라인, 62 : 냉각수 공급라인, 65 : 냉각수 배관, 68 : 유량검출단, 69 : 유량계, 70 : PLC, 71 : 조작판넬, 73 : 퍼지링(Purge Ring), 74 : 퍼지노즐(Purge Nozzel), 78,84 : 도어스토퍼(Door Stopper), 81,85 : 레버식리미트, 83 : 질소콘트롤 밸브, 88 : MCC, 90 : 출강측 도어, 91 : 캠 리미트DESCRIPTION OF REFERENCE NUMERALS 1 converter, 2 tapping hole, 8 tapping ladle, 9 fireproof wall, 11 conventional tapping side door, 12 sampling port, 14 forklift, 50 high pressure cooling water tank, 52 pump, 53 cooling water Recovery tank, 54: drive motor, 56: roller, 59: rail case, 60: rail groove, 60-1: shock absorber, 61: coolant recovery line, 62: coolant supply line, 65: coolant piping, 68: flow rate detection 69: flow meter, 70: PLC, 71: operation panel, 73: purge ring, 74: purge nozzle, 78, 84: door stopper, 81, 85: lever type Limit, 83: nitrogen control valve, 88: MCC, 90: exit side door, 91: cam limit

상기와 같은 목적을 달성하기 위하여 안출된 본 고안은 고압냉각수 탱크와 냉각배관으로 이루어진 여닫이 형태의 출강측 도어와 상기 냉각수의 회수용 탱크와 냉각수의 회수 라인에 연결된 유량검출단과 유량계로 구성된 냉각장치부와, 상기 여닫이 출강측 도어의 상단에 설치되며 레일홈과 상기 레일홈의 양단에 완충장치가 설치된 레일케이스와 상기 레일케이스의 레일홈에 취합되는 구동롤러가 설치된 다수개의 구동모터와 연결되는 MCC가 설치되며 상기 출강측 도어의 하단 양측면에 설치된 도어스토퍼와 그 평행선상의 일정지점에 설치된 레버식 리미트로 구성된 도어 개폐부와, 상기 출강측 도어의 전면부에 설치된 다수개의 퍼지노즐을 가진 퍼지링과 질소콘트롤 밸브로 구성된 질소 퍼지라인부와, 상기의 모든 동작을 제어하는 PLC로 이루어진 것을 특징으로 하는 냉각장치 및 자동개폐장치가 설치된 전로의 출강측 도어를 제공한다.The present invention devised to achieve the above object is a cooling device unit consisting of a flow-type detection stage and a flow meter connected to a swing-type tapping side door formed of a high-pressure cooling water tank and a cooling pipe, and a tank for recovering the cooling water and a recovery line for the cooling water. And, the MCC is connected to a plurality of drive motors are installed on the upper side of the opening door side and the rail groove and the rail case is installed on both ends of the rail groove and the drive rollers are assembled to the rail groove of the rail case A purge ring and a nitrogen control unit having a door opening and closing unit including a door stopper installed at both sides of the lower side of the exit side door and a lever-type limit installed at a predetermined point on the parallel line, and a plurality of purge nozzles installed at the front side of the exit side door. It consists of nitrogen purge line part which consists of valves and PLC which controls all the above operations. It provides a tapping side door of a converter cooling device and the automatic opening and closing device, characterized in that installed.

이하, 본 고안을 도면을 참조하여 보다 상세하게 설명한다.Hereinafter, the present invention will be described in more detail with reference to the drawings.

도 1은 종래의 출강측 도어의 개폐를 나타낸 사시도이고, 도 2는 전로가 출강측으로 기울어진 상태도와 출강측 도어를 개폐하는 작업상태를 나타낸 사시도이고, 도 3은 본 고안의 구성요소를 도시한 개략도이고, 도 4는 본 고안의 전체 개략도이다.Figure 1 is a perspective view showing the opening and closing of the conventional tapping side door, Figure 2 is a perspective view showing a state in which the converter is inclined toward the tapping side and the operation state for opening and closing the tapping side door, Figure 3 shows the components of the present invention 4 is a schematic view of the present invention.

상기와 같은 본 고안은 도 3에서 도시된바와 같이 고압의 냉각수 탱크(50)는 펌프(52)에 의하여 본 고안에 의해 냉각수배관으로(65,66)으로 이루어진 여닫이 형태의 출강측 도어(90)로 보내지고 상기의 냉각수는 다시 냉각수 회수탱크(53)으로 보내지며, 냉각수 회수라인(61)의 일측에는 유량검출단(68)과 유량계(69)가 설치된 냉각장치부와, 상기 출강측 도어(90)의 상단부에는 레일홈(60)이 형성되고 그 양단부에 완충장치(60-1)가 부착된 레일케이스(59)가 설치되고 상기 레일케이스(59)에 취합되는 롤러(56)가 부착된 다수개의 구동모터(54)와 연결되어 있는 MCC(88)가 설치되며 상기 출강측 도어(90)의 하단 양측면에 설치된 도어스토퍼(78,84)와 그 평행선상의 일정지점에 설치된 레버식 리미트(81,85)로 구성된 도어 개폐부와, 상기 출강측 도어(90)의 전면부에 다수개의 퍼지노즐(74)을 가진 퍼지링(73)이 설치되며 상기 퍼지링(73)과 연결된 질소콘트롤 밸브(83)로 구성된 질소 퍼지라인부와, 상기의 모든 동작을 제어하는 PLC로 구성된다.The present invention as described above is a high-pressure cooling water tank 50 as shown in Figure 3 by the pump 52 by the present invention made of a cooling water pipe (65,66) of the opening and closing type door side 90 And the cooling water is again sent to the cooling water recovery tank 53, and on one side of the cooling water recovery line 61, a cooling device unit provided with a flow rate detecting end 68 and a flow meter 69, and the tapping side door ( A rail groove 60 is formed at an upper end of the 90, and a rail case 59 having a shock absorber 60-1 is installed at both ends thereof, and a roller 56 attached to the rail case 59 is attached thereto. An MCC 88 connected to a plurality of drive motors 54 is installed, and the door stoppers 78 and 84 installed on both sides of the lower side of the tapping-side door 90 and the lever type limit 81 installed at a predetermined point on the parallel line. Door opening and closing portion consisting of, 85, and a plurality of fur on the front side of the tapping side door (90) A purge ring 73 having a nozzle nozzle 74 is installed, and a nitrogen purge line part composed of a nitrogen control valve 83 connected to the purge ring 73, and a PLC controlling all the above operations.

상기와 같은 구성의 본 고안은 도 4에 도시된 바와 같이 도어(90)를 각각 열고 닫거나 양쪽 도어(90)를 동시에 개폐 할 수 있도록 구성되어 있는데 현장판넬(71)에서 조작보턴을 누르면 PLC(70)에서 MCC(88)로 신호를 보내고 상기 MCC(88)는 구동모터(54)를 구동시켜 레일케이스(59)내의 레일 홈(60)을 따라 롤러(56)가 이동함으로써 출강측 도어(90)가 개폐된다.The present invention of the configuration as described above is configured to open and close the door 90, respectively, as shown in Figure 4 or to open and close both doors 90 at the same time pressing the operation button on the field panel 71 PLC (70) ) To the MCC 88 and the MCC 88 drives the drive motor 54 to move the roller 56 along the rail groove 60 in the rail case 59 so that the exit door 90 Is opened and closed.

또한, 상기의 출강측 도어(90)는 냉각수를 공급하는 펌프(53)의 고장등으로 인하여 도어의 냉각수 배관(65)으로 흐르는 냉각수의 부족시 도어(90)내에 스팀이 발생되어 냉각수 배관(65)이 변형되거나 용손되는 것을 방지하기 위하여 냉각수 회수라인(63)에 설치된 유량검출단(68)과 유량계(69)에서 측정한 유량값이 PLC(70)내에 설정된 기준 유량값보다 적음이 인지되면 상기 PLC(70)에서 MCC(88)로 신호를 보내 구동모터(54)를 구동시켜 출강측도어(90)를 열고양쪽 도어의 하단부 측면에 설치된 도어스토퍼(84)가 평행선상의 일정지점에 설치된 레버식 리미트(81,85)를 터치하면 구동모터(54)가 정지한다.In addition, the tapping side door 90 is steam generated in the door 90 when the coolant flowing to the cooling water pipe 65 of the door due to the failure of the pump 53 for supplying the cooling water, the cooling water pipe (65) If the flow rate value measured by the flow rate detection stage 68 and the flow meter 69 installed in the coolant recovery line 63 is less than the reference flow rate value set in the PLC 70 in order to prevent the deformation or melted water) The PLC 70 sends a signal to the MCC 88 to drive the driving motor 54 to open the tapping side door 90, and a door stopper 84 installed on the lower side of both doors is provided at a certain point on a parallel line. Touching the limits 81 and 85 stops the drive motor 54.

한편, 전로(1)로부터 시료채취시 전로(1)가 출강측으로 기울였졌다는 신호를 캠리미트(91)로부터 받으면 이를 인지한 PLC(70)는 질소콘트롤 밸브(83)를 열어 고열로 부터 작업자를 보호하고 전로(1)가 직립위치로 돌아갔다는 신호를 받으면 질소콘트롤 밸브(83)는 닫힌다.On the other hand, when sampling from the converter 1 receives the signal from the cam limit 91 that the converter 1 is inclined toward the tapping side, the PLC 70 recognizes this and opens the nitrogen control valve 83 to release the worker from high temperatures. The nitrogen control valve 83 is closed when it is protected and receives a signal that the converter 1 has returned to the upright position.

상기와 같은 본 고안에 의하여 제강공정에서 장시간의 출강적업시에도 전로 노구로부터의 고열과 화염에 의해 출강측 도어에 변형이 발생하지 않으므로써 설비의 내구력을 증대시켰고 도어의 개폐시 요구되던 불필요한 장비와 시간을 절감할 수 있으며 시료채취시에도 고열과 화염으로부터 작업자를 보호하여 안전성 및 생산성의 향상을 가져오는 효과를 제공한다.According to the present invention as described above, even in the steelmaking process for a long time tapping operation, the deformation of the tapping side door is not generated by high temperature and flame from the converter furnace, thereby increasing the durability of the equipment and unnecessary equipment required for opening and closing the door. It saves time and provides the effect of improving safety and productivity by protecting workers from high heat and flames even during sampling.

Claims (1)

고압냉각수 탱크(50)와 냉각수 배관(65)으로 이루어진 여닫이 형태의 출강측 도어(90)와 상기 냉각수의 회수용 탱크(53)와 냉각수의 회수 라인(61)에 연결된 유량검출단(68)과 유량계(69)로 구성된 냉각장치부와,Opening and closing side door 90 consisting of a high-pressure coolant tank 50 and a coolant pipe 65, a flow rate detection stage 68 connected to the recovery tank 53 and the recovery line 61 of the cooling water; A chiller unit composed of a flow meter (69), 상기 여닫이 출강측 도어(90)의 상단에 설치되며 레일홈(60)과 상기 레일홈(60)의 양단에 완충장치(60-1)가 설치된 레일케이스(59)와 상기 레일홈(60)에 취합되는 구동롤러(56)가 설치된 다수개의 구동모터(54)와 연결되는 MCC(88)가 설치되며 상기 출강측 도어(90)의 하단 양측면에 설치된 도어스토퍼(78,84)와 그 평행선상의 일정지점에 설치된 레버식 리미트(81,85)로 구성된 도어 개폐부와,It is installed at the upper end of the opening and closing door 90, the rail groove 60 and the rail case 59 and the rail groove 60, the shock absorber 60-1 is installed at both ends of the rail groove 60, The MCC 88 is connected to a plurality of drive motors 54 installed with the driving rollers 56 to be collected, and a parallel line with the door stoppers 78 and 84 provided on both sides of the lower side of the exit side door 90. A door opening and closing portion composed of lever type limits 81 and 85 installed at a point; 상기 출강측 도어의 전면부에 다수개의 퍼지노즐(74)을 가진 퍼지링(73)이 설치되며 상기 퍼지링(73)과 연결된 질소콘트롤 밸브(83)로 구성된 질소 퍼지라인부와,A purge ring 73 having a plurality of purge nozzles 74 installed at the front side of the exit side door, and a nitrogen purge line part including a nitrogen control valve 83 connected to the purge ring 73; 상기의 모든 동작을 제어하는 PLC(70)로 이루어진 것을 특징으로 하는 냉각장치 및 자동개폐장치가 설치된 전로의 출강측 도어.Door for the exit of the converter is installed, characterized in that consisting of a PLC (70) for controlling all the operations above.
KR2019970020203U 1997-07-29 1997-07-29 Entrance side door of converter with cooling system and automatic switchgear KR200250763Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019970020203U KR200250763Y1 (en) 1997-07-29 1997-07-29 Entrance side door of converter with cooling system and automatic switchgear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019970020203U KR200250763Y1 (en) 1997-07-29 1997-07-29 Entrance side door of converter with cooling system and automatic switchgear

Publications (2)

Publication Number Publication Date
KR19990006715U KR19990006715U (en) 1999-02-25
KR200250763Y1 true KR200250763Y1 (en) 2001-12-13

Family

ID=53897912

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019970020203U KR200250763Y1 (en) 1997-07-29 1997-07-29 Entrance side door of converter with cooling system and automatic switchgear

Country Status (1)

Country Link
KR (1) KR200250763Y1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101257611B1 (en) * 2011-06-30 2013-04-29 현대제철 주식회사 Door Structure for Discharging a Slag of Electric furnace
WO2013048067A3 (en) * 2011-09-30 2013-05-23 현대제철 주식회사 Method of manufacturing a slag discharge door

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100851873B1 (en) * 2002-05-31 2008-08-13 주식회사 포스코 Equipments for steel manufacture with device for intercepting inflow of external air

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101257611B1 (en) * 2011-06-30 2013-04-29 현대제철 주식회사 Door Structure for Discharging a Slag of Electric furnace
WO2013048067A3 (en) * 2011-09-30 2013-05-23 현대제철 주식회사 Method of manufacturing a slag discharge door
US9964360B2 (en) 2011-09-30 2018-05-08 Hyundai Steel Company Method of manufacturing a slag discharge door

Also Published As

Publication number Publication date
KR19990006715U (en) 1999-02-25

Similar Documents

Publication Publication Date Title
KR200250763Y1 (en) Entrance side door of converter with cooling system and automatic switchgear
CN1079040C (en) Sliding gate valve for vessel containing molten metal
RU2150349C1 (en) Method and apparatus (variants) for controlling melt steel flow
EP0166147B1 (en) Teeming apparatus and method
KR200293706Y1 (en) Safety apparatus for fixing a converter
KR100825613B1 (en) A system for drilling a blocked pressure detection hole by using an air motor
US3583692A (en) Emergency apparatus mounted on the bottom of a metal-teeming vessel
CN109628685A (en) A method of protection sublance seal cap
CN206009817U (en) External laser sensor protection device
KR100985303B1 (en) An apparatus for protecting the operating cab of coke oven charging car
KR100828154B1 (en) Cooling Device for hot blast line
CN216141216U (en) Anti-reverse assembly, anti-falling device and anti-falling system
KR20070003249A (en) Welding gun for preventing water from leaking
CN216738410U (en) Limiting device for controlling blast furnace slag runner gate
CN220356117U (en) Explosion-proof mechanism for smelting furnace
KR100605690B1 (en) Pressure control apparatus for iron notch of blast furnace
KR200332916Y1 (en) Automatic opening and closing device of oxygen lance dome ball
KR100523796B1 (en) Hot blast valve to control impact
KR101665770B1 (en) Door apparatus for discharging slag
KR200160606Y1 (en) The inter lock device of the descaling movement
CN219546998U (en) Scald-proof steelmaking converter
KR200265105Y1 (en) Gate lock on ladle exit
CN217358054U (en) Anti-splashing furnace body for iron alloy tapping
KR200173998Y1 (en) Air curtain for preventing splash of molten material in blast furnace outlet
JP2750995B2 (en) Temperature measuring device for solution in converter

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
REGI Registration of establishment
LAPS Lapse due to unpaid annual fee