KR19990017156U - Hot Air Valve Leakage Measuring Device - Google Patents
Hot Air Valve Leakage Measuring Device Download PDFInfo
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- KR19990017156U KR19990017156U KR2019970030600U KR19970030600U KR19990017156U KR 19990017156 U KR19990017156 U KR 19990017156U KR 2019970030600 U KR2019970030600 U KR 2019970030600U KR 19970030600 U KR19970030600 U KR 19970030600U KR 19990017156 U KR19990017156 U KR 19990017156U
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Abstract
본 고안은 열풍로의 열풍밸브 누수측정장치에 관한 것으로, 드레인배관(165)에 연결된 관로에는 드레인자동밸브(11)과 외부배출수동밸브(12)이 각각 설치되고, 이 드레인자동밸브(11)과 외부배출수동밸브(12) 사이의 관로에는 누수측정조(14)가 연결되며, 이 누수측정조(14)의 상부에는 질소퍼지변(15)이 연결됨과 동시에 양측부에는 누수량을 계측할 수 있도록 된 레벨검출기(16)와 육안으로 확인할 수 있도록 된 제1관찰창(17)이 각각 설치된 누수측정부; 상기 누수측정조(14)의 배출관로에 설치된 측정조배출제어밸브(21)과 상기 드레인자동밸브(11)과 측정조인입자동밸브(13) 사이의 관로에 설치된 바이패스자동밸브(22)을 매개로하여 연결된 누수총량검출조(20); 상기 열풍밸브의 입구측 하부에는 열풍배출관(31)이 연통되게 설치되고, 이 열풍배출관(31)의 관로에는 열풍배출자동밸브(32)과 측정조유도자동밸브(33)을 사이에 두고 누수측정조(14)가 연결되며, 이 열풍배출자동밸브(32)과 측정조유도자동밸브(33) 사이의 관로에는 중기차단자동밸브(34)을 매개로하여 증기검지기(35)가 연결되고, 이 증기검지기(35)에는 증기를 외부로 배출시킬 수 있도록 회전하는 벤트팬(36)이 설치된 증기검지부; 상기 검출기(16,23,35,41,42,43)의 신호를 받아 각종 밸브를 개폐조작시키는 제어부(50)로 이루어져, 작업의 생산성을 도모함은 물론 열풍관 내부의 연와의 수명을 연장시키게 되는 효과가 있는 것이다.The present invention relates to a hot air valve leak measuring device of the hot blast furnace, a drain automatic valve 11 and an external discharge manual valve 12 is installed in the pipeline connected to the drain pipe 165, respectively, the drain automatic valve 11 The leakage measuring tank 14 is connected to the pipeline between the external discharge valve 12 and the leakage measuring tank 14 is connected to the nitrogen purge valve 15 at the top of the leak measuring tank 14 to measure the amount of leakage at both sides. Leak measurement unit is provided with a level detector 16 and the first observation window 17 so as to be visible with the naked eye; Measuring tank discharge control valve 21 installed in the discharge line of the water leakage measuring tank 14 and the bypass automatic valve 22 provided in the pipeline between the drain automatic valve 11 and the measuring joining dynamic valve (13) Leakage total amount detection tank 20 connected via a medium; Hot air discharge pipe (31) is installed in communication with the lower portion of the inlet side of the hot air valve, the hot air discharge pipe 31, the hot air discharge automatic valve 32 and the measurement tank induction automatic valve 33 between the water leakage measurement The tank 14 is connected, and the steam detector 35 is connected to the pipeline between the hot air discharge automatic valve 32 and the measurement tank induction automatic valve 33 via the medium-term shut-off automatic valve 34. The steam detector 35 includes a steam detector having a vent fan 36 that rotates to discharge steam to the outside; Consists of a control unit 50 for opening and closing various valves in response to the signals of the detectors (16, 23, 35, 41, 42, 43), to improve the productivity of the work as well as to extend the life of the smoke inside the hot air pipe It works.
Description
본 고안은 열풍로의 열풍밸브 누수측정장치에 관한 것으로, 특히 열풍밸브의 보호를 위한 냉각수 배관의 손상여부를 정밀하게 측정할 수 있도록 된 열풍로의 열풍밸브 누수측정장치에 관한 것이다.The present invention relates to a hot air valve leak measuring device of the hot blast furnace, and more particularly to a hot air valve leak measuring device of the hot blast furnace that can accurately measure whether the cooling water pipe damage for the protection of the hot air valve.
일반적으로, 열풍로는 광석과 코크스가 장입된 용광로의 내부에 고온 고압의 공기를 불어 넣어주는 장치로서, 이러한 열풍로에는 고온과 고압의 공기를 공급하여 주는 대구경의 열풍밸브이 구비되어 있다.In general, a hot blast furnace is a device for blowing high-temperature and high-pressure air into the interior of the blast furnace filled with ore and coke, the hot blast furnace is provided with a large diameter hot air valve for supplying high-temperature and high-pressure air.
여기서, 상기 용광로에 투입된 장입물은 열풍밸브을 통해 공급된 열풍에 의하여 환원반응을 일으켜 용선을 생산하게 된다.Here, the charges put into the blast furnace is reduced by the hot air supplied through the hot air valve to produce the molten iron.
따라서, 상기 열풍로에서 용광로가스와 코크스가스를 연료로 사용하여 일정시간 연소시켜 열축척한 후 송풍기에서 보내진 냉풍(200℃)을 부어넣음으로써 고온(1200℃)의 열풍으로 치환되어 용광로로 공급되는 것이다.Therefore, after burning for a predetermined period of time using the furnace gas and the coke gas as fuel in the hot furnace, the heat is accumulated and replaced with hot air at a high temperature (1200 ° C.) by pouring cold air (200 ° C.) sent from the blower to be supplied to the furnace. will be.
즉, 상기한 기능을 수행할 수 있도록 된 종래의 열풍공급장치는 도 1의 개략도에 도시된 바와 같이, 용광로(110)의 내부가스를 이용하여 공기를 연소시켜 열축척하도록 된 열풍로(120)와, 이 열풍로(120)에서 공급되는 공기를 가열시킬 수 있도록 된 연소실(130), 이 연소실(130)에서 가열된 열풍을 비축시킬 수 있도록 된 축열실(140), 이 축열실(140)에 냉풍을 불어넣을 수 있도록 된 송풍기(150) 및, 상기 열풍로(150)의 관로상에 열풍의 양을 조절할 수 있도록 장착된 열풍밸브(160)으로 이루어진 구조로 되어 있다.That is, the conventional hot air supply device capable of performing the above function, as shown in the schematic diagram of FIG. 1, the hot air furnace 120 to burn and accumulate air by using the internal gas of the furnace 110. And a combustion chamber 130 capable of heating the air supplied from the hot stove 120, a heat storage chamber 140 capable of storing hot air heated in the combustion chamber 130, and the heat storage chamber 140. The blower 150 and the hot air valve 160 to be able to adjust the amount of hot air on the conduit of the hot blast furnace 150 to blow the cold air into the pipe.
또한, 상기 열풍밸브은 도 2의 개략도에 도시된 바와 같이, 열풍로(120)의 관로상에는 원주방향을 따라 과열에 의한 손상을 방지시킬 수 있도록 된 냉각수유로(161)가 장착되고, 이 냉각수유로(161)의 외측면에는 냉각수의 일정하게 온도를 유지시킬 수 있도록 된 보호커버(162)가 장착되며, 이 냉각수유로(161)의 하측에는 양측으로 나란하게 일정높이로 돌출된 고정시트(163)가 고정설치되고, 이 고정시트(163)의 사이에는 작동방향을 따라 이동하면서 열풍로의 관로를 개폐시킬 수 있도록 된 이동디스크(164)가 설치된 구조로 되어 있다.In addition, as shown in the schematic diagram of FIG. 2, the hot air valve is equipped with a cooling water flow path 161 that is capable of preventing damage due to overheating along the circumferential direction on the pipe of the hot air passage 120. The outer side of the 161 is equipped with a protective cover 162 to maintain a constant temperature of the cooling water, the lower side of the cooling water flow path 161 is fixed sheet 163 protruding at a predetermined height side by side on both sides is It is fixedly installed, and the movable disk 164 is provided between the fixing sheet 163 to open and close the pipe of the hot air path while moving along the operation direction.
따라서, 상기 이동디스크(164)가 고정시트(163)의 내측면에 접촉 또는 밀착을 반복하면서 열풍밸브(160)을 개페시키게 되는 것이다.Therefore, the movable disk 164 opens or closes the hot air valve 160 while repeatedly contacting or intimately contacting the inner surface of the fixing seat 163.
그런데, 상기한 열풍로(120)의 조업특성상 열풍밸브(160)이 연속적인 개폐동작을 반복하게 되며, 이때 열풍밸브(160)의 내부압력은 열풍로의 송풍과정에서는 고압상태이고 연소과정에서는 대기압상태를 유지하게 되면서 전후압력차가 연속적으로 변화게 되므로, 상기 열풍밸브(160)의 볼트고정부나 배관연결부 등이 국부적으로 손상을 입게 된다.However, the hot air valve 160 repeats the continuous opening and closing operation due to the operation characteristic of the hot air furnace 120, wherein the internal pressure of the hot air valve 160 is a high pressure state in the blowing process of the hot air furnace and atmospheric pressure in the combustion process. Since the front and rear pressure difference is continuously changed while maintaining the state, the bolt fixing part or the pipe connection part of the hot air valve 160 is locally damaged.
이때, 상기 열풍밸브(160)의 내부를 통과하는 열풍이 손상부위로 침투되어 냉각수유로(161)를 흐르던 냉각수를 증발시키면서 내주면에 진동이나 충격을 가하게 된다.At this time, the hot air passing through the inside of the hot air valve 160 penetrates into the damaged part and vibrates or impacts the inner circumferential surface while evaporating the coolant flowing through the cooling water flow path 161.
또한, 상기 열풍밸브(160)의 내부압력은 열풍로의 연소과정에서는 대기압상태를 유지하게 되므로, 냉각수유로(161)를 흐르던 냉각수가 열풍로(120)측으로 유출되면서 열풍로의 내화연화를 치명적으로 손상시키게 된다.In addition, since the internal pressure of the hot air valve 160 maintains an atmospheric pressure state during the combustion process of the hot air furnace, the cooling water flowing through the cooling water flow path 161 flows out to the hot air furnace 120 side, thereby fatally refractory softening of the hot air furnace. It is damaged.
그리고, 상기 용광로의 정기수리나 돌발사고가 발생된 경우에 수리를 위하여 열풍로(120)를 정지시키게 되는데, 점차적으로 열풍로의 송풍압력이 저하되면서 상대적으로 냉각수압력보다 낮아지게 되는 경우 손상부위를 통해 냉각수가 유입되므로 내화연와를 치명적으로 손상시키게 된다.In addition, when a regular repair or an accident occurs in the furnace, the hot stove 120 is stopped for repair. When the blow pressure of the hot stove gradually decreases, the damaged portion is lowered than the coolant pressure. The coolant flows through it, which causes the fire retardant to be fatally damaged.
한편, 상기한 문제점을 해결하기 위하여 출원된(출원번호 : 97-6307) 종래의 기술은 열풍밸브의 각 냉각유로별 배수배관에서 발생하는 기포량을 측정하므로써, 열풍밸브의 손상여부를 판단하였으며, 용광로가 정지된 후 열풍밸브의 드레인배관(165)를 개방하여 배출량을 통해 열풍밸브의 손상정도를 판단하였다.On the other hand, the prior art filed to solve the above problems (application number: 97-6307) by determining the amount of air bubbles generated in the drain pipe for each cooling flow path of the hot air valve, it was determined whether the hot air valve is damaged, After the furnace was stopped, the drain pipe 165 of the hot air valve was opened to determine the degree of damage of the hot air valve through the discharge.
그런데, 상기한 방법은 열풍밸브의 구조상 각부위별 고정 및 냉각배관 인입연결부가 별도로 연결구성되어 있으면서 열풍밸브이 밀폐되었을때, 상기 고정시트(163)의 사이로 밀착되는 이동디스크(164)와 보호커버(162)의 간극이 5㎜를 유지할 수 있도록 제작되어 있다.By the way, the above-described method has a movable disk 164 and a protective cover which are in close contact with the fixing seat 163 when the hot air valve is sealed while the fixed and cooling pipe inlet connection parts of the respective parts are separately configured in the structure of the hot air valve. The gap of 162 is manufactured so that 5 mm can be maintained.
따라서, 상기 열풍밸브(160)은 정상조업 중에 발생되는 고압과 대기압의 변화에 의하여 열풍로(120)의 연소과정에서는 이동디스크(164)가 고정시트(163)쪽으로 밀려 밀착되고, 송풍과정에서는 이동디스크(164)가 고정시트(163)의 사이로 복귀된 후 열풍밸브이 개방되는 특성 때문에, 냉각배관의 연결부 또는 고정부가 쉽게 이완되어 약간의 양 차이는 있으나 통상적으로 기포가 발생되고 있다.Therefore, the hot air valve 160 is moved by the moving disk 164 is pushed toward the fixed seat 163 in the combustion process of the hot air furnace 120 by the change of high pressure and atmospheric pressure generated during normal operation, and moves in the blowing process Since the hot air valve is opened after the disk 164 is returned between the fixing seats 163, the connection part or the fixing part of the cooling pipe is easily relaxed and there is a slight amount difference, but bubbles are usually generated.
즉, 종래의 기포량을 측정하는 방법만으로는 열풍밸브의 손상여부 및 정도를 정확하게 측정하는 것이 곤란할 뿐만 아니라 손상으로 추정되는 열풍밸브의 교체시기 결정 등의 구체적인 수리계획을 수립하기 어렵고 고가의 열풍밸브을 조기에 교체하게 되는 우류를 범하게 된다는 문제점이 있었다.That is, it is difficult to accurately measure whether or not the hot air valve is damaged by the conventional method of measuring the amount of air bubbles, and it is difficult to establish a specific repair plan such as determining the replacement time of the hot air valve that is suspected to be damaged, and to start an expensive hot air valve early. There was a problem that the offense was replaced by a cow.
또한, 상기 용광로의 정기수리 또는 돌발수리시에 용광로의 송풍을 차단하고자 하는 경우 감풍이 진행되면서 송풍압력이 냉각수압력보다 낮아지는 시점부터 냉각수가 손상부위로 서서히 침투되고, 완전히 감풍되기 까지는 상당한 시간이 소요되므로 다량의 냉각수 침투를 막을 수 없게 되어 열풍밸브의 내화연와의 손상방지 또는 완화시키는 방법이 불가능하다.In addition, in the case of attempting to block the blowing of the blast furnace during regular repair or sudden repair of the blast furnace, a considerable time is required until the blowing pressure is lower than the cooling water pressure and the cooling water slowly penetrates into the damaged part while the blowing is in progress. Since it is impossible to prevent a large amount of cooling water infiltration, it is impossible to prevent or alleviate the damage of the hot air valve with the refractory smoke.
그리고, 완전하게 감풍되기 전에 열풍밸브의 드레인배관(165)을 개방하는 것은 고온의 열풍이 누수되면서 드레인배관를 손상시키게 되고, 완전하게 감풍되기 까지 드레인배관(165)의 개방을 지연하는 것은 지연된 시간만큼 누출수를 외부로 배출시키지 못하게 되며, 상기 드레인배관(165)의 개방작업을 작업자가 협소한 장소에서 수작업으로 실시하므로 부하증가와 협착 또는 전도 등의 안전사고의 위함성이 있었다.In addition, opening the drain pipe 165 of the hot air valve before completely depressurizing damages the drain pipe while leaking high temperature hot air, and delaying opening of the drain pipe 165 until the air is completely depressed by a delayed time. Since the leaked water cannot be discharged to the outside, the operation of opening the drain pipe 165 is performed manually by a worker in a narrow place, thereby increasing the load and risking safety accidents such as narrowing or falling.
또한, 상기 용광로의 수리가 완료되어 재송풍을 위해 드레인배관(165)을 닫는 경우에, 송풍압력이 냉각수의 압력보다 높아질 때까지 열풍관의 내부로 누수되던 모든 냉각수가 열풍관을 거쳐 용광로로 투입되므로 노영저하와 연와손상 등을 가져오게 된다는 문제점이 있었다.In addition, in the case where the repair of the furnace is completed and the drain pipe 165 is closed for re-blowing, all the coolant leaked into the inside of the hot air pipe is introduced into the furnace until the blowing pressure is higher than the pressure of the cooling water. As a result, there was a problem that the labor and management will be reduced and lead damage.
이에, 본 고안은 상기한 바와 같은 제문제점을 해결하기 위하여 안출된 것으로, 열풍로의 송풍과정에서 냉각수압력보다 낮아지는 시점을 정확하게 측정하게 될 뿐만 아니라 연소과정에서 증기나 누수발생 여부를 정확하게 측정할 수 있도록 된 열풍로의 열풍밸브 누수측정장치를 제공하는 데에 그 목적이 있다.Thus, the present invention was devised to solve the problems described above, it is not only to accurately measure the time point lower than the coolant pressure during the blowing process of the hot stove, but also to accurately measure the occurrence of steam or leakage in the combustion process. It is an object of the present invention to provide a hot air valve leak measuring device for a hot stove.
상기한 바의 목적을 달성하기 위한 본 고안은, 열풍로의 관로상에 원주방향을 따라 냉각수유로가 장착되고, 이 냉각수유로의 하측에는 양측으로 나란하게 고정시트가 설치되며, 이 고정시트의 사이에는 관로를 개폐시키기 위한 이동디스크가 설치되고, 이 이동디스크의 하측에는 드레인배관이 설치된 구조로 이루어진 용광로 열풍로의 열풍밸브에 있어서, 상기 드레인배관에 연결된 관로에는 드레인자동밸브과 외부배출수동밸브이 각각 설치되고, 이 드레인자동밸브과 외부배출수동밸브 사이의 관로에는 측정조인입자동밸브을 사이에 두고 누수측정조가 연결되며, 이 누수측정조의 상부에는 질소배관이 연통되는 질소퍼지변이 연결됨과 동시에 양측부에는 누수량을 계측할 수 있도록 된 레벨검출기와 육안으로 확인할 수 있도록 된 제1관찰창이 각각 설치된 누수측정부; 상기 누수측정조의 배출관로에 설치된 측정조배출제어밸브과 상기 드레인자동밸브과 측정조인입자동밸브 사이의 관로에 설치된 바이패스자동밸브을 매개로하여 연결되며, 측부에는 전체누수량을 계측할 수 있도록 된 총레벨검출기와 육안으로 확인할 수 있도록 된 제2관찰창이 각각 설치된 누수총량검출부; 상기 열풍밸브의 입구측 하부에는 열풍배출관이 연통되게 설치되고, 이 열풍배출관의 관로에는 열풍배출자동밸브과 측정조유도자동밸브을 사이에 두고 누수측정조가 연결되며, 이 열풍배출자동밸브과 측정조유도자동밸브 사이의 관로에는 중기차단자동밸브을 매개로하여 증기검지기가 연결되고, 이 증기검지기에는 증기를 외부로 배출시킬 수 있도록 된 벤트팬이 연결된 증기검지부; 상기 열풍밸브의 입구측과 출구측의 상부에는 열풍의 압력을 감지할 수 있도록 된 제1,2열풍압력검출기가 각각 설치되며, 상기 냉각수유로에는 냉각수의 압력을 감지할 수 있도록 된 냉각수압력검출기가 설치된 압력검출부; 상기 레벨검출기와 상기 증기검지기 상기 제1,2열풍압력검출기 및 상기 냉각수압력검출기의 신호를 받아 상호제어하는 제어부로 이루어진 구조로 되어 있다.The present invention for achieving the object of the above, the cooling water flow path is mounted along the circumferential direction on the pipeline of the hot air passage, the lower side of the cooling water flow path is installed side by side on both sides of the fixing sheet, between the fixing sheet In the hot air valve of the blast furnace hot air furnace having a structure in which a drain pipe is installed in the lower side of the moving disk, the drain connected to the drain pipe is provided with a drain automatic valve and an external discharge manual valve. In the pipeline between the drain automatic valve and the external discharge manual valve, a water leakage measurement tank is connected with a measuring joining particle valve in between. Level detectors that can be measured and the first observation window that can be checked with the naked eye Leakage measuring section installed; A total level detector which is connected to a measuring tank discharge control valve installed in a discharge line of the leak measuring tank and a bypass automatic valve installed in a pipeline between the drain automatic valve and a measuring joining dynamic valve, and to measure the total amount of leakage on the side. Leakage total amount detection unit has a second observation window that can be confirmed with the naked eye; A hot air discharge pipe is installed in the lower portion of the inlet side of the hot air valve, and a water leakage measuring tank is connected to the hot air discharge pipe between the hot air discharge automatic valve and the measurement tank induction valve, and the hot air discharge automatic valve and the measurement tank induction valve are connected to each other. A steam detector is connected to the pipeline between the automatic shut-off valves, and the steam detector includes a steam detector connected to a vent fan configured to discharge steam to the outside; First and second hot air pressure detectors are installed at upper portions of the inlet side and the outlet side of the hot air valve, respectively, and a coolant pressure detector configured to detect the pressure of the coolant in the coolant flow path. An installed pressure detector; The level detector, the steam detector and the first and second hot air pressure detectors and the coolant pressure detector receive a signal and control each other.
따라서, 상기한 구조로 이루어진 열풍로의 열풍밸브 누수측정장치를 장착하므로써, 열풍밸브의 냉각수압력과 송풍압력을 측정하여 냉각수압력이 높은 시점에서 침투되는 수분을 적기에 외부로 배출할 수 있을 뿐만 아니라 앵각수 유로에서 발생되는 누수량과 증기를 검지하여 열풍밸브의 손상여부와 진행정도를 측정할 수 있게 되므로, 작업의 생산성을 도모함은 물론 열풍관 내부의 연와의 수명을 연장시키게 되는 것이다.Therefore, by installing the hot air valve leak measuring device of the hot air passage having the above-described structure, it is possible to measure the coolant pressure and the blowing pressure of the hot air valve not only to discharge the water penetrated at a time when the coolant pressure is high to the outside in a timely manner. By detecting the leakage and steam generated in the angle channel, it is possible to measure the damage and the progress of the hot air valve, thereby increasing the productivity of the work as well as extending the life of the smoke inside the hot air pipe.
도 1은 일반적인 기술에 따른 용광로의 열풍공급설비를 도시한 개략도,1 is a schematic diagram showing a hot air supply equipment of the furnace according to the general technology,
도 2는 종래 기술에 따른 열풍밸브의 일부를 도시한 개략도,Figure 2 is a schematic diagram showing a part of the hot air valve according to the prior art,
도 3은 본 고안에 따른 용광로의 열풍밸브 누수측정장치를 도시한 개략도,Figure 3 is a schematic diagram showing a hot air valve leak measuring apparatus of the furnace according to the present invention,
도 4는 본 고안에 따른 용광로의 열풍밸브 누수측정장치의 작동순서를 나타내는 흐름도이다.Figure 4 is a flow chart showing the operation sequence of the hot air valve leak measuring apparatus of the furnace according to the present invention.
* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings
120 : 열풍로 160 : 열풍밸브120: hot air furnace 160: hot air valve
161 : 냉각수유로 162 : 보호커버161: cooling water flow path 162: protective cover
163 : 고정시트 164 : 이동디스크163: fixed sheet 164: removable disk
165 : 드레인배관 11 : 드레인자동밸브165: drain piping 11: drain automatic valve
12 : 외부배출수동밸브 13 : 측정조인입자동밸브12: Externally discharged manual valve 13: Measurement joining particle valve
14 : 누수측정조 15 : 질소퍼지변14: Leakage measuring tank 15: Nitrogen purge valve
16 : 레벨검출기 17 : 제1관찰창16: level detector 17: the first observation window
20 : 누수총량검출조 21 : 측정조배출제어밸브20: leak total amount detection tank 21: measuring tank discharge control valve
22 : 바이패스자동밸브 23 : 총레벨검출기22: bypass automatic valve 23: total level detector
24 : 제2관찰창 31 : 열풍배출관24: 2nd observation window 31: hot air discharge pipe
32 : 열풍배출자동밸브 33 : 측정조유도자동밸브32: hot air discharge automatic valve 33: measuring tank induction automatic valve
34 : 중기차단자동밸브 35 : 증기검지기34: intermediate shutoff automatic valve 35: steam detector
41,42 : 제1,2열풍압력검출기 43 : 냉각수압력검출기41, 42: first and second hot air pressure detector 43: coolant pressure detector
50 : 제어부50: control unit
이하, 본 고안에 따른 일실시예를 첨부된 예시도면을 참조로하여 상세하게 설명하면 다음과 같다.Hereinafter, an embodiment according to the present invention will be described in detail with reference to the accompanying drawings.
도 3은 본 고안에 따른 용광로의 열풍밸브 누수측정장치를 도시한 개략도이며, 도 4는 본 고안에 따른 용광로의 열풍밸브 누수측정장치의 작동순서를 나타내는 흐름도로서, 이들 도면에 도시된 바와 같이, 열풍로(120)의 관로상에 원주방향을 따라 냉각수유로(161)가 장착되고, 이 냉각수유로(161)의 하측에는 양측으로 나란하게 고정시트(163)가 설치되며, 이 고정시트(163)의 사이에는 관로를 개폐시키기 위한 이동디스크(164)가 설치되고, 이 이동디스크(164)의 하측에는 드레인배관(165)이 설치된 구조로 이루어진 용광로 열풍로의 열풍밸브에 있어서, 상기 드레인배관(165)에 연결된 관로에는 드레인자동밸브(11)과 외부배출수동밸브(12)이 각각 설치되고, 이 드레인자동밸브(11)과 외부배출수동밸브(12) 사이의 관로에는 측정조인입자동밸브(13)을 사이에 두고 누수측정조(14)가 연결되며, 이 누수측정조(14)의 상부에는 질소배관이 연통되는 질소퍼지변(15)이 연결됨과 동시에 양측부에는 누수량을 계측할 수 있도록 된 레벨검출기(16)와 육안으로 확인할 수 있도록 된 제1관찰창(17)이 각각 설치된 누수측정부; 상기 누수측정조(14)의 배출관로에 설치된 측정조배출제어밸브(21)과 상기 드레인자동밸브(11)과 측정조인입자동밸브(13) 사이의 관로에 설치된 바이패스자동밸브(22)을 매개로하여 연결되며, 측부에는 전체누수량을 계측할 수 있도록 된 총레벨검출기(23)와 육안으로 확인할 수 있도록 된 제2관찰창(24)이 각각 설치된 누수총량검출부; 상기 열풍밸브의 입구측 하부에는 열풍배출관(31)이 연통되게 설치되고, 이 열풍배출관(31)의 관로에는 열풍배출자동밸브(32)과 측정조유도자동밸브(33)을 사이에 두고 누수측정조(14)가 연결되며, 이 열풍배출자동밸브(32)과 측정조유도자동밸브(33) 사이의 관로에는 중기차단자동밸브(34)을 매개로하여 증기검지기(35)가 연결되고, 이 증기검지기(35)에는 증기를 외부로 배출시킬 수 있도록 된 벤트팬(36)이 연결된 증기검지부; 상기 열풍밸브의 입구측과 출구측의 상부에는 열풍의 압력을 감지할 수 있도록 된 제1,2열풍압력검출기(41,42)가 각각 설치되며, 상기 냉각수유로(161)에는 냉각수의 압력을 감지할 수 있도록 된 냉각수압력검출기(43)가 설치된 압력검출부; 상기 레벨검출기(16)와, 상기 증기검지기(35), 상기 제1,2열풍압력검출기(41,42) 및, 상기 냉각수압력검출기(43)의 신호를 받아 상호제어하는 제어부(50)로 이루어진 구조로 되어 있다.3 is a schematic view showing a hot air valve leak measuring apparatus of the blast furnace according to the present invention, Figure 4 is a flow chart showing the operation sequence of the hot air valve leak measurement apparatus of the blast furnace according to the present invention, as shown in these drawings, The cooling water flow path 161 is mounted along the circumferential direction on the conduit of the hot air path 120, and the fixing sheet 163 is installed at the lower side of the cooling water flow path 161 in parallel to both sides. In the hot air valve of the blast furnace hot stove having a structure in which a moving disk 164 for opening and closing the pipe is installed, and the drain pipe 165 is provided below the moving disk 164, the drain pipe 165 ), The drain automatic valve 11 and the external discharge manual valve 12 are respectively installed in the conduit connected to the pipe line, and the measurement joining particle valve (13) is provided in the pipeline between the drain automatic valve 11 and the external discharge manual valve 12. ) With The measuring tank 14 is connected, and the upper part of the leak measuring tank 14 is connected with a nitrogen purge side 15 through which a nitrogen pipe is connected, and at the same time, both sides have a level detector 16 capable of measuring the amount of leakage. Leak measurement unit is provided with each of the first observation window 17 so that it can be confirmed with the naked eye; Measuring tank discharge control valve 21 installed in the discharge line of the water leakage measuring tank 14 and the bypass automatic valve 22 provided in the pipeline between the drain automatic valve 11 and the measuring joining dynamic valve (13) Connected to each other, the side of the total level detector 23, which can measure the total amount of leak and the second observation window 24, which can be visually confirmed; Hot air discharge pipe (31) is installed in communication with the lower portion of the inlet side of the hot air valve, the hot air discharge pipe 31, the hot air discharge automatic valve 32 and the measurement tank induction automatic valve 33 between the water leakage measurement The tank 14 is connected, and the steam detector 35 is connected to the pipeline between the hot air discharge automatic valve 32 and the measurement tank induction automatic valve 33 via the medium-term shut-off automatic valve 34. The steam detector 35 includes a steam detector connected to the vent pan 36 to discharge steam to the outside; First and second hot air pressure detectors 41 and 42 are installed at upper portions of the inlet side and the outlet side of the hot air valve, respectively, and detect the pressure of the coolant in the cooling water flow path 161. A pressure detector configured to allow the coolant pressure detector 43 to be installed; The level detector 16, the steam detector 35, the first and second hot air pressure detectors 41 and 42, and a controller 50 configured to mutually control a signal from the coolant pressure detector 43. It is structured.
여기서, 상기 열풍밸브(160)의 하부측에는 드레인배관(165)이 연통되어 있으되, 이 드레인배관(165)의 내부에는 철피내측에 내수성 재질의 내화벽돌이 축조되어 있으며, 하부면에는 열풍이 외부로 배출되는 것을 방지시킬 수 있도록 된 차단부재(165a)가 장착된 구조로 되어 있다.Here, the drain pipe 165 is in communication with the lower side of the hot air valve 160, the interior of the drain pipe 165 is a refractory brick made of a water-resistant material in the inner shell, and the hot air to the outside The blocking member 165a is installed to prevent the discharge.
또한, 상기 드레인배관(165)에는 전기적 신호에 따라 개페되는 드레인자동밸브(11)가 설치되어 있고, 이 드레인자동밸브(11)의 배출구에는 대략 Τ자 형상의 배관이 장착되며, 이 배관의 단부에는 수분을 배츨시킬 수 있도록 된 외부배출수동밸브(12)가 설치된 구조로 되어 있다.In addition, the drain pipe 165 is provided with a drain automatic valve 11 which is opened in accordance with an electrical signal, and the discharge port of the drain automatic valve 11 is equipped with a substantially Τ-shaped pipe, the end of the pipe Has a structure in which an external discharge manual valve 12 is installed to discharge moisture.
그리고, 상기 드레인자동밸브(11)와 상기 외부배출수동밸브(12)의 사이에는 측정조인입자동밸브(13)가 설치되어 있으며, 이 측정조인입밸브(13)의 배출구에는 원통형상의 누수측정조(14)가 설치된 구조로 되어 있다.Further, a measuring joining dynamic valve 13 is provided between the drain automatic valve 11 and the external discharge manual valve 12, and a cylindrical leak measuring tank is provided at the outlet of the measuring joining inlet valve 13. (14) is provided.
물론, 상기 누수측정조(14)의 일측부에는 내부의 유량을 검출시킬 수 있도록 상하도압관밸브(16a)를 통해 레벨검출기(16)가 장착되어 있으며, 타측부에는 내부를 들여다 볼 수 있도록 도압관수동밸브(17a)를 통해 제1관찰창(17)이 장착된 구조로 되어 있다.Of course, one side of the leak measuring tank 14 is equipped with a level detector 16 through the up and down pressure pipe valve 16a so as to detect the flow rate therein, the other side the pressure to see the inside The first observation window 17 is mounted via the pipe manual valve 17a.
또한, 상기 누수측정조(14)의 상부에는 측정조의 내부에 수분이 충진된 경우에 외부로 배출시킬 수 있도록 관로로 개페되는 질소퍼지밸브(15)가 설치된 구조로 되어 있다.In addition, the upper portion of the leak measuring tank 14 has a structure in which a nitrogen purge valve 15 opened by a pipe line is installed so that the water can be discharged to the outside when the inside of the measuring tank is filled with moisture.
그리고, 상기 드레인자동밸브(11)와 측정조인입자동밸브(13)의 사이에는 Τ자 형상의 또다른 배관이 수직하는 방향으로 장착되어 있으며, 이 Τ자 형상의 배관에는 바이패스자동밸브(22)를 통해 누수총량검출조(20)가 연결된 구조로 되어 있다.Further, between the drain automatic valve 11 and the measuring joining dynamic valve 13, another Τ-shaped pipe is mounted in the vertical direction, and the bypass automatic valve 22 is installed in the Τ-shaped pipe. The leak total amount detection tank 20 is connected to the structure.
물론, 상기 누수총량검출조(20)에는 측정조제어배출밸브(21)를 누수측정조(14)가 연결된 구조로 되어 있다.Of course, the leakage total amount detection tank 20 has a structure in which the measurement tank control discharge valve 21 is connected to the leakage measurement tank 14.
또한, 상기 누수총량검출조(20)는 각 열풍밸브의 손상진행여부를 판단하기 위한 자료로 활용되는 구조로 되어 있다.In addition, the leak total amount detection tank 20 has a structure that is used as data for determining whether the hot air valve is damaged.
한편, 상기 열풍밸브(160)의 유입구측 하부에는 일정직경의 열풍배출관(31)이 장착되어 있고, 이 열풍배출관(31)의 단부에는 열풍배출자동밸브(32)가 설치되어 있으며, 이 열풍배출자동밸브(32)의 관로에는 측정조유도자동밸브(33)를 사이에 두고 누수측정조(14)가 연결된 구조로 되어 있다.On the other hand, the hot air discharge pipe 31 having a constant diameter is mounted to the lower portion of the inlet side of the hot air valve 160, the hot air discharge automatic valve 32 is provided at the end of the hot air discharge pipe 31, this hot air discharge In the pipeline of the automatic valve 32, the water leakage measuring tank 14 is connected with the measurement tank induction automatic valve 33 interposed therebetween.
물론, 상기 열풍배출관(31)은 열풍로를 통해 공급되는 열풍에 함유된 증기를 배출시키도록 된 구조로 되어 있다.Of course, the hot air discharge pipe 31 has a structure to discharge the steam contained in the hot air supplied through the hot stove.
또한, 상기 열풍배출자동밸브(32)와 측정조유도자동밸브(33)의 사이에는 중기차단자동밸브(34)가 설치되어 있고, 이 중기차단자동밸브(34)에는 증기가 충진된 경우에 온신호를 송출하게 되는 증기검출기(35)가 연결되어 있으며, 이 증기검출기(35)에는 증기를 배출시키기 위해 회전작동하는 벤트팬(36)이 연결된 구조로 되어 있다.In addition, a medium-term shut-off automatic valve 34 is provided between the hot air discharge automatic valve 32 and the measurement tank induction automatic valve 33, and this medium-term shut-off automatic valve 34 is turned on when steam is filled. A steam detector 35 that transmits a signal is connected, and the steam detector 35 has a structure in which a vent fan 36 that rotates to discharge steam is connected.
한편, 상기 누수측정조(14)와 바이패스자동밸브(22)를 통해 공급되는 누수는 누수총량검출기(20)에 저장되는데, 이 누수총량검출기(20)의 측면에는 상하도압관밸브(23a)를 통해 총레벨검출기(23)가 설치되며, 이 총레벨검출기(23)의 외측에는 육안확인용 제2관찰창(24)이 장착되는 구조로 되어 있다.On the other hand, the leakage supplied through the leak measuring tank 14 and the bypass automatic valve 22 is stored in the leak total amount detector 20, the upper and lower pressure pipe valve 23a on the side of the leak total amount detector 20 Through the total level detector 23 is provided, the outside of the total level detector 23 has a structure in which the second observation window 24 for visual confirmation is mounted.
또한, 상기 열풍밸브(160)에는 입구측에는 연소실에서 공급되는 열풍의 압력을 검출할 수 있도록 된 제1열풍압력검출기(41)가 설치되며, 출구측에는 열풍로측 압력을 검출할 수 있도록 된 제2열풍압력검출기(42)가 설치된 구조로 되어 있다.In addition, the hot air valve 160, the inlet side is provided with a first hot air pressure detector 41 to detect the pressure of the hot air supplied from the combustion chamber, the second side is able to detect the hot stove side pressure on the outlet side The hot air pressure detector 42 is provided.
그리고, 상기 보호커버(162)의 내부에는 냉각수유로(161)를 통해 흐르는 냉각수의 압력을 검출할 수 있도록 된 냉각수압력검출기(43)가 장착된 구조로 되어 있다.In addition, the protection cover 162 has a structure in which a coolant pressure detector 43 capable of detecting a pressure of the coolant flowing through the coolant channel 161 is mounted.
물론, 상기에서 상술한 바와 같은 다수개의 검출기(16,23,35,41,42,43)에는 이들을 제어신호를 받아 상기한 다수개의 밸브를 개폐시킬 수 있도록 상호제어조작하는 제어부(50)가 연결된 구조로 되어 있다.Of course, the plurality of detectors (16, 23, 35, 41, 42, 43) as described above is connected to the control unit 50 for mutual control operation to open and close the plurality of valves by receiving them control signals It is structured.
이하, 본 고안에 따른 작용을 첨부된 도 4의 흐름도를 참조로하여 상세하게 설명하면 다음과 같다.Hereinafter, the operation according to the present invention will be described in detail with reference to the flowchart of FIG. 4.
먼저, 본 장치의 구조는 제어부(50)에서 선택스위치를 자동모드로 선택하므로써 작동하게 되는데, 특히 열풍로 모드, 열풍밸브 개페모드, 바닥모드로 구성되어 있다First, the structure of the apparatus is operated by selecting the selector switch in the automatic mode in the control unit 50, in particular, the hot stove mode, hot air valve opening mode, floor mode is composed of
물론, 상기한 선택스위치는 수동모드를 선택한 경우에도 작동이 가능하게 되는 것이다.Of course, the selection switch is enabled even when the manual mode is selected.
또한, 상기 자동모드에서는 열풍로설비의 운전상태에 따라 그리고 열풍로의 동작과정에 따라 수분 배출 및 측정 또는 검지과정이 진행되게 된다.In addition, in the automatic mode, the water is discharged and measured or detected according to the operation state of the hot stove facility and the operation of the hot stove.
따라서, 상기 제어부(50)의 선택모드를 열풍로 모드로 선택하게 되면, 상기 열풍로측 증기검출과정이 진행된다.Therefore, when the selection mode of the controller 50 is selected as the hot stove mode, the hot stove side steam detection process is performed.
즉, 정상조업중 열풍로가 교체되어 연소상태로 진행되면, 해당되는 열풍로의 열풍배출자동밸브(32)와 증기차단자동밸브(34)가 차례로 개방되면서 벤트팬(35)이 가동하게 되고, 이때 해당되는 열풍밸브(160)의 누수에 의한 증기발생여부와 정도를 증기검지기(35)에서 감지하게 되며, 증기가 발생되는 경우에는 측정조유도자동밸브(34)가 개방되면서 발생된 증기를 누수측정조(14)로 보내게 된다.That is, when the hot stove is replaced during the normal operation and proceeds to the combustion state, the vent fan 35 is operated while the hot wind discharge automatic valve 32 and the steam shutoff automatic valve 34 of the corresponding hot stove are opened in sequence. At this time, whether or not the steam generated by the leak of the corresponding hot air valve 160 is detected by the steam detector 35, when the steam is generated leaks the steam generated by the measurement tank induction valve 34 is opened. It is sent to the measuring tank (14).
이때, 상기 누수된 수분이 누수측정조(14)에서 충만되어 있는 상태를 레벨검출기(16)에서 검지하게 되면, 상기 측정조유도자동밸브(33)가 폐쇄되면서 측정조배출제어밸브(21)가 개방되게 되므로, 상기 질소퍼지밸브(15)가 개방됨과 동시에 충진된 수분이 외부로 배출된다.At this time, when the state of the leaked water is filled in the leak measuring tank 14 is detected by the level detector 16, the measuring tank induction valve 33 is closed while the measuring tank discharge control valve 21 Since the nitrogen purge valve 15 is opened at the same time, the filled water is discharged to the outside.
그리고, 상기 질소퍼지밸브(15)를 통해 충진된 수분의 배출이 완료되면, 상기 측정조제어밸브(21)가 폐쇄되면서 측정조유도자동밸브(33)가 다시 개방되므로, 상기 누수측정조(14)에서는 누수량을 측정하게 되는 상태로 세팅이 완료되는 것이다.When the discharge of the water filled through the nitrogen purge valve 15 is completed, the measurement tank control valve 21 is closed and the measurement tank induction automatic valve 33 is opened again, so that the leakage measuring tank 14 ), The setting is completed in the state of measuring the leakage amount.
이후, 상기 해당 열풍로가 송풍으로 이행하게 되면, 모든 동작은 중단되게 되고, 상기 증기검지기(35)에 의하여 작동되는 모든 밸브들이 폐쇄되면서 다음 연소시까지 대기한다.Thereafter, when the corresponding hot stove moves to the blowing, all the operations are stopped, and all the valves operated by the steam detector 35 are closed and stand by until the next combustion.
한편, 상기 제어부(50)의 선택스위치를 바닥모드로 선택하게 되면, 상기 드레인자동밸브(11)와 측정조인입자동밸브(13)가 차례로 열리면서 누수량을 측정하게 되고, 이때 타이머(미도시)에 설정된 일정시간이 지난후에는 누수량 측정과정이 중단되며, 이어서 상기 자동밸브(11,13)를 폐쇄한 상태에서 다음 명령을 대기하게 된다.On the other hand, when the selection switch of the control unit 50 is selected in the bottom mode, the drain automatic valve 11 and the measuring joining dynamic valve 13 is opened in order to measure the leakage amount, at this time to the timer (not shown) After the predetermined time elapses, the leakage measuring process is stopped, and then the next command is waited while the automatic valves 11 and 13 are closed.
또한, 상기 용광로의 정기수리 또는 돌발수리시에 열풍로 개폐모드를 선택하게 되면, 상기 제1,2열풍압력검출기(41,42)에서 송풍압을 검지하여 제어부(50)로 송출하게 된다.In addition, when the hot blast opening and closing mode is selected at the time of regular repair or sudden repair of the furnace, the first and second hot air pressure detectors 41 and 42 detect the blowing pressure and send the same to the controller 50.
만일, 상기 열풍로의 압력이 냉각수의 압력보다 낮게 되면, 상기 드레인자동밸브(11)와 측정조인입자동밸브(13)가 개방되어 누수량을 측정하게 된다.If the pressure of the hot stove is lower than the pressure of the cooling water, the drain automatic valve 11 and the measuring joining dynamic valve 13 are opened to measure the amount of leakage.
물론, 상기 레벨검출기(16)에서 누수측정조(14)의 누수량이 충진된 것을 감지하게 되면, 상기 측정조인입자동밸브(13)가 폐쇄됨과 동시에 측정조배출제어밸브(21)가 열게 되므로, 상기 질소퍼지변(15)를 통해 충진된 수분을 배출시키게 되는 것이다.Of course, when it is detected that the leak amount of the leak measuring tank 14 is filled in the level detector 16, the measuring joint discharge valve 13 is closed and at the same time the measurement tank discharge control valve 21 is opened, The nitrogen purge side 15 is to discharge the water filled through.
또한, 상기한 과정을 거쳐 충진된 수분의 배출이 완료되면, 상기 질소퍼지밸브(15)와 측정조배출제어밸브(21)가 닫히면서 상기 측정조인입자동밸브(13)가 다시 열려 누수량을 계속 측정하게 되는 상태가 되는 것이다.In addition, when the discharge of the water filled through the above process is completed, the nitrogen purge valve 15 and the measurement tank discharge control valve 21 is closed and the measurement joining dynamic valve 13 is opened again to continue the leakage amount. It is a state to be measured.
물론, 상기한 동작은 열풍로의 압력이 대기압 상태로 떨어진 경우에도 계속되면서 누수량의 증가여부를 검지하게 되며, 용광로를 가동하기 위하여 재송풍하는 경우에도 송풍압력이 냉각수압력 보다 높아지는 시점까지 계속 검지하게 되는 것이다.Of course, the above operation continues even when the pressure of the hot stove drops to atmospheric pressure, and detects an increase in leakage amount, and continues to detect until the blow pressure becomes higher than the coolant pressure even when re-blowing to operate the furnace. Will be.
한편, 상기 누수총량검출조(20)는 해당 열풍밸브의 측정개시부터 종료시까지 총누수량을 측정하게 되며, 주기적으로 실시하는 정기수리때 마다 각 열풍밸브의 손상 진행 정도의 판단자료로 활용할 수 있도록 누수총량을 차압식 측정기에 의해서 측정하게 되는 것이다.On the other hand, the leak amount detection tank 20 measures the total amount of leakage from the start of the measurement to the end of the measurement of the hot air valve, and leaks to be utilized as judgment data of the degree of damage progress of each hot air valve at each periodic maintenance The total amount is measured by a differential pressure gauge.
이상에서 설명한 바와 같이 본 고안에 따른 열풍로의 열풍밸브 누수측정장치에 의하면, 열풍밸브의 냉각수압력과 송풍압력을 측정하여 냉각수압력이 높은 시점에서 침투되는 수분을 적기에 외부로 배출할 수 있을 뿐만 아니라 앵각수 유로에서 발생되는 누수량과 증기를 검지하여 열풍밸브의 손상여부와 진행정도를 측정할 수 있게 되므로, 작업의 생산성을 도모함은 물론 열풍관 내부의 연와의 수명을 연장시키게 되는 효과가 있는 것이다.As described above, according to the hot-air valve leak measuring apparatus of the hot-air furnace according to the present invention, by measuring the coolant pressure and the blowing pressure of the hot-air valve can be discharged to the outside in a timely manner when the water penetrated at a high cooling water pressure In addition, it is possible to measure the damage and the progress of the hot air valve by detecting the amount of leakage and steam generated in the angle flow path, thereby improving productivity and extending the life of the smoke inside the hot air pipe. .
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| KR2019970030600U KR19990017156U (en) | 1997-10-31 | 1997-10-31 | Hot Air Valve Leakage Measuring Device |
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