KR20080057943A - Device for removing scale in the pipe of continuous casting plant cooling system and removing method thereof - Google Patents

Device for removing scale in the pipe of continuous casting plant cooling system and removing method thereof Download PDF

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Publication number
KR20080057943A
KR20080057943A KR1020060131900A KR20060131900A KR20080057943A KR 20080057943 A KR20080057943 A KR 20080057943A KR 1020060131900 A KR1020060131900 A KR 1020060131900A KR 20060131900 A KR20060131900 A KR 20060131900A KR 20080057943 A KR20080057943 A KR 20080057943A
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South Korea
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pipe
high voltage
cooling system
cooling
voltage generator
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KR1020060131900A
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Korean (ko)
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고광섭
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주식회사 포스코
재단법인 포항산업과학연구원
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Priority to KR1020060131900A priority Critical patent/KR20080057943A/en
Publication of KR20080057943A publication Critical patent/KR20080057943A/en

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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
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1287—Rolls; Lubricating, cooling or heating rolls while in use
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/14—Plants for continuous casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/18—Controlling or regulating processes or operations for pouring
    • B22D11/181—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level
    • B22D11/186—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level by using electric, magnetic, sonic or ultrasonic means

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

A device for removing scales in a pipe of a continuous casting plant cooling system and a scale removal method thereof are provided to apply high voltage pulse generated from a high voltage generator to the pipe so as to prevent clogging of the pipe. A continuous casting plant cooling system(1) comprises a scale pit(10), a sedimentation tank(20), a gravel filter(30), a cooling tower(40), a spray nozzle(50), a high voltage generator, an electrode, and a deposit removing device(60). The electrode applies high voltage pulse generated from the high voltage generator to the pipe connecting the cooling tower to the spray nozzle. The deposit removing device has a control part of controlling operation of the high voltage generator.

Description

연주공정 냉각시스템의 배관내 퇴적물 제거장치 및 배관내 퇴적물 제거방법{Device for removing Scale in the pipe of continuous casting plant cooling system and removing method thereof}Device for removing scale in the pipe of continuous casting plant cooling system and removing method

도 1은 일반적인 연주공정 냉각시스템의 냉각수 여과처리도, 1 is a cooling water filtration treatment of a typical playing process cooling system,

도 2는 본 발명에 따른 연주공정 냉각시스템의 배관내 퇴적물 제거장치 구성도, 2 is a block diagram of the sediment removal device in the pipe of the regeneration process cooling system according to the present invention,

도 3은 도 2의 배관내 퇴적물 제거장치가 설치된 연주공정 냉각시스템의 냉각수 여과처리도, 3 is a cooling water filtration process of the regeneration process cooling system installed in the pipe deposit removal device of Figure 2,

도 4는 도 3의 다른 형태에 따른 연주공정 냉각시스템의 냉각수 여과처리도, 4 is a cooling water filtration treatment diagram of the playing process cooling system according to another embodiment of FIG.

도 5는 본 발명에 따른 배관내 퇴적물 제거장치가 설치되는 연주공정 냉각시스템의 배관과 종래 연주공정 냉각시스템의 배관의 비교 실험결과를 촬영한 사진, Figure 5 is a photograph of the result of the comparative experiment of the piping of the playing process cooling system and the pipe of the conventional playing process cooling system is installed sediment removal device in the pipe according to the present invention,

* 도면의 주요 부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings

10 : 스케일피트 20 : 침전조10: scale fit 20: sedimentation tank

30 : 그래벌필터 40 : 냉각탑30: Gravel Filter 40: Cooling Tower

50 : 분사노즐 60 : 퇴적물 제거장치50: spray nozzle 60: deposit removal device

본 발명은, 연주공정 냉각시스템의 배관내 퇴적물 제거장치 및 배관내 퇴적물 제거방법에 관한 것이다. The present invention relates to an in-pipe sediment removal device and a method for removing in-pipe sediment in a regeneration process cooling system.

연주공정(연속주조공정)은 고온의 용강으로부터 주편(Slab)이나 괴철(Bloom) 등(이하 설명의 편의 상 주편을 예로하여 설명함)을 제조하는 공정이다. The casting process (continuous casting process) is a process for manufacturing slabs, blooms, and the like (described as an example for convenience of description) from hot molten steel.

이 연주공정에서 용강은 몰드(Mold)에 의해서 1차적으로 냉각되어 표면에 10 내지 20mm 정도의 표면응고층이 형성되고, 내부는 응고되지 않은 반제품 상태인 주편으로 몰드에서 인출된다. 그리고, 인출된 주편은 롤러를 통해 이동하면서 냉각시스템에서 분사되는 냉각수에 의해 2차적으로 냉각되어 그 내부가 응고된 후, 인장이나 절단 등의 가공을 거쳐 제품으로 생산된다. In this process, molten steel is primarily cooled by a mold to form a surface coagulation layer of about 10 to 20 mm on the surface, and the inside is taken out of the mold as a cast non-solidified cast iron. Then, the drawn cast steel is secondarily cooled by the cooling water sprayed from the cooling system while moving through the roller and solidified therein, and then is produced as a product through processing such as tension or cutting.

이때, 냉각수는 주편을 냉각시킴과 동시에, 롤러 등의 냉각시스템 설비들도 냉각시키게 되는데, 이 과정에서 주편 및 롤러 등의 설비로부터 생성된 스케일과 무기염 및 오일 등의 오염물질이 냉각수에 섞이게 된다. 이에 따라, 일반적인 연주공정의 냉각시스템에서는 냉각수를 여과시켜서 재활용하고 있다. At this time, the cooling water cools the cast steel, and also cools down the cooling system equipment such as rollers. In this process, scales generated from the equipment such as cast steel and rollers, and contaminants such as inorganic salts and oils are mixed in the cooling water. . Accordingly, in the cooling system of a general playing process, the cooling water is filtered and recycled.

일반적인 연주공정 냉각시스템의 냉각수 여과방법을 도 1을 참고하여 살펴본다. 주편과 롤러 등의 설비(105)에 분사된 냉각수는 스케일피트(110)(Scale pit)에서 스케일이 제거된 후, 침전조(120)로 공급되어 오일 및 부유물(SS:Suspended Solid`s) 등의 오염물질이 일부 여과된다. The cooling water filtration method of a general playing process cooling system will be described with reference to FIG. 1. Cooling water injected to the equipment 105, such as cast steel and rollers is descaled in the scale pit 110 (Scale pit), and then supplied to the settling tank 120, such as oil and suspended solids (SS) Some contaminants are filtered out.

그리고, 침전조(120)에서 여과 처리된 냉각수는 그래벌필터(130)(Gravel Filter)에서 오일 및 부유물 등의 오염물질이 다시 여과된 다음, 냉각탑(140)에서 냉각과정을 거쳐 분사노즐(150)을 통해 주편과 롤러 등의 설비(105)에 재분사됨으로써, 주편과 롤러를 연속적으로 냉각시킨다. Then, the cooling water filtered in the sedimentation tank 120 is filtered again contaminants such as oil and suspended matter in the Gravel Filter 130, and then the cooling nozzle 140 through the cooling process in the cooling nozzle 140 By re-injecting into the installation 105, such as a cast steel and a roller, the casting and roller are cooled continuously.

그러나, 이러한 종래 연주공정 냉각시스템의 냉각수 여과방법에 있어서는, 여과 과정에서 미쳐 여과되지 못한 오염물질을 포함한 냉각수가 냉각탑에서 배관(B)을 통해 분사노즐로 공급되는 과정에서 오염물질이 배관(B) 내에 퇴적되는 문제점이 있었다. However, in the cooling water filtration method of the conventional regeneration process cooling system, the contaminants are supplied from the cooling tower to the injection nozzle through the pipe (B) in the cooling tower. There was a problem of being deposited within.

이에 의해, 배관(B)의 관경 축소와 막힘 현상이 빈번하게 발생하였으며, 이는 분사노즐에서 분사되는 냉각수의 분사압력, 분사각도, 분사위치의 불균형에 대한 원인이 되어 주편의 제품품질에 악영향을 끼치는 심각한 문제점으로 대두되었다. As a result, pipe diameter reduction and blockage occurred frequently, which caused unbalance of the spray pressure, the spray angle, and the spray position of the coolant sprayed from the spray nozzle, which adversely affects the product quality of the cast steel. It was a serious problem.

또한, 배관(B)의 관경 축소와 막힘 현상에 의해 배관(B)의 교체 및 정비가 빈번하게 이루어져야 하기 때문에, 시스템의 유지관리가 매우 어렵게 이루어지는 문제점이 있었다. In addition, since the pipe B needs to be frequently replaced and maintained due to the reduction in diameter and the blockage of the pipe B, maintenance of the system is very difficult.

더불어, 이러한 문제점들은 연주공정 냉각시스템의 설비 수명을 단축시키는 심각한 결과를 초래한다. In addition, these problems have serious consequences that shorten the life of the installation of the cooling process cooling system.

따라서, 본 발명의 목적은, 배관의 관경 축소 및 막힘현상을 방지함과 동시에, 연주공정에서 생산되는 제품의 품질이 향상되며, 설비의 유지관리가 용이하고 수명이 증가될 수 있는 연주공정 냉각시스템의 배관내 퇴적물 제거장치 및 그 방법을 제공하는 것이다. Therefore, an object of the present invention, while preventing the pipe diameter reduction and clogging phenomenon, the quality of the product produced in the playing process is improved, the maintenance process of the playing process can be easy to maintain the equipment and increase the life It is to provide an apparatus and a method for removing sediment in the pipe.

상기 목적은, 본 발명에 따라, 스케일피트와 침전조 및 그래벌필터와 냉각탑과 분사노즐의 냉각수 순환 구조를 갖는 연주공정 냉각시스템에 있어서, 고전압펄스를 발생시키는 고전압발생기와, 상기 고전압발생기에서 발생된 고전압펄스을 상기 냉각탑과 상기 분사노즐을 연결하는 배관 내부로 인가하는 전극봉과, 상기 고전압발생기의 구동을 제어하는 제어부를 갖는 배관내 퇴적물 제거장치를 포함하는 것을 특징으로 하는 연주공정 냉각시스템에 의해 달성된다.According to the present invention, in the regeneration process cooling system having a coolant circulation structure of a scale fitt, settling tank, grabble filter, cooling tower, and injection nozzle, a high voltage generator for generating a high voltage pulse, and the high voltage generator And an electrode rod for applying a high voltage pulse into a pipe connecting the cooling tower and the injection nozzle, and an in-pipe deposit removal device having a control unit for controlling the driving of the high voltage generator. .

한편, 상기 목적은 본 발명의 다른 분야에 따라, 스케일피트와 침전조 및 그래벌필터와 냉각탑과 분사노즐의 냉각수 순환 구조를 갖는 연주공정 냉각시스템에서 상기 냉각탑과 상기 분사노즐을 연결하는 배관 내부의 퇴적물을 제거하는 방법에 있어서, 상기 배관 내부에 고전압펄스를 인가하는 것을 특징으로 하는 연주공정 냉각시스템의 배관내 퇴적물 제거방법에 의해서도 달성된다. On the other hand, the object is a sediment inside the pipe connecting the cooling tower and the injection nozzle in the regeneration process cooling system having the cooling water circulation structure of the scale fitter, sedimentation tank, grabble filter, cooling tower and injection nozzle according to another field of the present invention. In the method of removing, it is also achieved by the method for removing deposits in the pipe of the regeneration process cooling system, characterized by applying a high voltage pulse to the inside of the pipe.

여기서, 상기 고전압펼스를 DC 25,000V 내지 30,000V인 것이 바람직하다. Here, the high voltage spread is preferably DC 25,000V to 30,000V.

그리고, 상기 고전압펄스 인가 영역과 상기 분사노즐 사이에는 백워싱필터(Backwashing Filter)와 존필터(Zone Filter) 중 적어도 어느 하나가 더 마련되는 것이 효과적이다. In addition, at least one of a backwashing filter and a zone filter may be further provided between the high voltage pulse applying region and the injection nozzle.

이하에서는 첨부된 도면을 참고하여 본 발명에 대해서 상세하게 설명한다. Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the present invention.

도 2는 본 발명에 따른 연주공정 냉각시스템의 배관내 퇴적물 제거장치의 구성도, 도 3은 도 2의 배관내 퇴적물 제거장치가 설치된 연주공정 냉각시스템의 냉각수 여과처리도이다. 이들 도면에 도시된 바와 같이, 본 발명에 따른 연주공정 냉각시스템의 배관내 퇴적물 제거장치(60)는 도시하지 않은 전원공급부로부터 공급된 전원을 고전압펄스로 발생시키는 고전압발생기(61)와, 고전압발생기(61)에서 발생된 고전압펄스을 배관(A) 내부로 인가하는 전극봉(63)과, 고전압발생기(61)의 구동을 제어하는 제어부(65)를 포함한다.Figure 2 is a block diagram of the in-pipe sediment removal device of the playing process cooling system according to the present invention, Figure 3 is a cooling water filtration process of the playing process cooling system is installed in the pipe sediment removal apparatus of FIG. As shown in these drawings, in-pipe deposit removal apparatus 60 of the reproducing process cooling system according to the present invention includes a high voltage generator 61 for generating power supplied from a power supply (not shown) with high voltage pulses, and a high voltage generator. An electrode rod 63 for applying the high voltage pulse generated at 61 to the pipe A, and a controller 65 for controlling the driving of the high voltage generator 61.

고전압발생기(61)는 적어도 DC 25,000V 내지 30,000V의 고전압펄스를 발생시킬 수 있는 고전압 발생용량을 가지고 있으며, 전극봉(63)은 상호 소정의 간격을 두고 배관(A)의 일구간에 삽입 설치되는 애노드(양극)전극봉(63a)과 캐소드(음극)전극봉(63b)으로 마련된다. 그리고, 제어부(65)는 고전압발생기(61)의 구동전압을 DC 25,000V 내지 30,000V으로 제어하고, 이 범위내에서 냉각시스템(1)의 제반여건에 따라 미리 설정된 구동전압과 구동시간 및 구동주기에 따라 고전압발생기(61)의 구동을 제어한다. The high voltage generator 61 has a high voltage generating capacity capable of generating high voltage pulses of at least 25,000 V to 30,000 V, and the electrode rods 63 are inserted into one section of the pipe A at predetermined intervals from each other. An anode (anode) electrode rod 63a and a cathode (cathode) electrode rod 63b are provided. Then, the control unit 65 controls the drive voltage of the high voltage generator 61 to 25,000V to 30,000V, and within this range, the drive voltage, drive time, and drive cycle set in advance according to the general conditions of the cooling system 1. The driving of the high voltage generator 61 is controlled accordingly.

이러한 구성을 갖는 배관내 퇴적물 제거장치(60)는 도 2에 도시된 바와 같이, 스케일피트(10) -> 침전조(20) -> 그래벌필터(30) -> 냉각탑(40) -> 분사노즐(50) -> 주편 및 설비(5)의 냉각수 순환 구조로 이루어진 연주공정 냉각시스템(1)에서 냉각탑(40)과 분사노즐(50)을 연결하는 배관(A)의 일구간에 설치되어 배관(A) 내부로 이동하는 냉각수에 포함된 오염물질을 전기적으로 분해하는 방법으로 배관(A) 내부에 오염물질이 퇴적되는 것을 방지한다. In the pipe sediment removal device 60 having such a configuration, as shown in Figure 2, scale fit 10-> sedimentation tank 20-> grabble filter 30-> cooling tower 40-> injection nozzle (50)-> In the casting process cooling system (1) consisting of the cooling water circulation structure of the cast and the equipment (5) is installed in one section of the pipe (A) connecting the cooling tower 40 and the spray nozzle (50). A) It prevents the contaminants from accumulating inside the pipe (A) by electrically dissolving the contaminants contained in the cooling water moving inside.

이를 보다 구체적을 살펴보면, 고전압발생기(61)에서 출력되는 DC 25,000V 내지 30,000V의 고전압펄스는 전극봉(63)을 통해 배관(A) 내부로 인가된다 그러면, 배관(A) 내부에 상호 소정 거리 이격된 애노드전극봉(63a)과 캐소드전극봉(63b) 사이의 영역에서 전기장이 발생하게 된다. 따라서, 냉각탑(40)으로부터 분사노즐(50)을 향해 이동하는 냉각수에 포함된 오염물질은 전기장 발생 영역에서 전기적 분해작용에 의해 분해된다. Looking at this in more detail, the high voltage pulse of DC 25,000V to 30,000V output from the high voltage generator 61 is applied into the pipe (A) through the electrode rod 63, then, a predetermined distance apart from each other inside the pipe (A) An electric field is generated in the region between the anode electrode rod 63a and the cathode electrode rod 63b. Therefore, contaminants contained in the cooling water moving from the cooling tower 40 toward the injection nozzle 50 are decomposed by the electrolysis in the electric field generating region.

즉, 냉각수에 포함된 오염물질을 전기적 분해 작용에 의해 고분자에서 저분자로 분해함으로써, 오염물질이 배관(A) 내부에 퇴적되는 것을 방지하게 된다. 이에 의해, 배관(A) 내부가 퇴적물에 의해 막히거나 관경이 축소되는 것을 방지할 수 있다. That is, by decomposing the contaminants contained in the cooling water into low molecules in the polymer by the electrolytic action, the contaminants are prevented from being deposited in the pipe A. As a result, the inside of the pipe A can be prevented from being blocked by deposits or the tube diameter can be reduced.

한편, 본 발명에 따른 배관내 퇴적물 제거장치(60)를 갖는 연주공정의 냉각시스템(1)은 도 4에 도시된 바와 같이, 배관내 퇴적물 제거장치(60)와 분사노즐(50) 사이의 배관(A)상에 미세 여과스크린을 구비한 백워싱필터(70)(Backwashing Filter)와 존필터(80)(Zone Filter)나 이들 중 적어도 어느 하나를 추가로 설치하여 퇴적물 제거장치(60)에서 분해되지 않은 초미세 오염물질을 보다 효과적으로 여과시킬 수 있다. 이에 의해, 배관(A)의 막힘 현상과 관경 축소 현상을 더욱 현격하게 방지할 수 있다. Meanwhile, as shown in FIG. 4, the cooling system 1 of the playing process having the in-pipe sediment removal device 60 according to the present invention includes a pipe between the in-pipe sediment removal device 60 and the injection nozzle 50. A backwashing filter 70 having a fine filtration screen and a zone filter 80 or at least one of them are further installed on (A) to be decomposed by the deposit removal device 60. Unfiltered microcontaminants can be filtered more effectively. Thereby, the clogging phenomenon of the piping A and the diameter reduction phenomenon can be prevented more remarkably.

이하, 본 발명에 따른 배관내 퇴적물 제거장치(60)를 갖는 연주공정 냉각시스템(1)의 실시예를 설명한다. Hereinafter, an embodiment of the regeneration process cooling system 1 having the in-pipe deposit removal device 60 according to the present invention will be described.

(실시예)(Example)

본 실시예에서는 연주공정 냉각시스템(1)의 냉각탑(40)으로부터 분사노즐(50)을 향하는 배관(A) 상에 배관내 퇴적물 제거장치(60)를 설치하고 DC 27,000V 고전압펄스를 배관(A) 내부에 인가하는 방법으로 1개월 동안 연주공정 냉각시스템(1)을 운전하였다. In this embodiment, the deposit removal device 60 in the pipe is installed on the pipe A from the cooling tower 40 of the playing process cooling system 1 toward the injection nozzle 50, and the DC 27,000V high voltage pulse is connected to the pipe A. The cooling process (1) was operated for one month by a method applied inside.

그리고, 1개월 경과 후, 배관내 퇴적물 제거장치(60)를 설치한 배관(A)과 종래 연주공정 냉각시스템(101)의 냉각탑(140)과 분사노즐(150) 사이의 배관(B)을 일부 절단하여 양 배관(A,B) 내부의 퇴적물에 육안관찰과 XRD분석 및 습식분석을 행하였다. Then, after one month, the pipe A between the pipe A on which the deposit removal device 60 in the pipe is installed and the cooling tower 140 and the spray nozzle 150 of the conventional performance process cooling system 101 are partially removed. The specimens were cut and subjected to visual observation, XRD analysis, and wet analysis to deposits in both pipes (A and B).

육안관찰 결과 도 5의 실사진에서 확인할 수 있는 바와 같이, 배관(B) 내부에는 퇴적물이 확연하게 관찰되었고, 배관(A) 내부에서는 퇴적물이 거의 관찰되지 않을 정도로 현격하게 감소된 것을 확인할 수 있었다. As a result of visual observation, as can be seen in the real picture of FIG. 5, the deposits were clearly observed in the pipe B, and the deposits were remarkably reduced in the pipe A.

그리고, XRD분석 및 습식분석 결과, 아래 표-1에 나타낸 바와 같이, 배관(B)에서는 CaF2(플루오르화칼슘) 성분이 주로 나타났으며, 배관(A)에서는 CaF2 성분이 80%이상 현격하게 감소된 것을 확인 할 수 있었다. 본 발명에 따른 배관내 퇴적물 제거장치(60)를 설치한 배관(A)에서 퇴적물 방지효과가 매우 우수한 것을 의미한다. As a result of XRD analysis and wet analysis, CaF2 (calcium fluoride) component was mainly found in pipe (B), and CaF2 component was markedly reduced by 80% or more in pipe (A). I could confirm that Means that the sediment prevention effect is very excellent in the pipe (A) provided with the sediment removal device 60 in the pipe according to the present invention.

시료명Sample Name 분석항목(wt%)Analysis item (wt%) CaF2 CaF 2 Fe2O3 Fe 2 O 3 SiO2 SiO 2 Al2O3 Al 2 O 3 P2O5 P 2 O 5 MnOMnO MgOMgO 배관(A)Piping (A) 12.2412.24 22.622.6 2.72.7 3.363.36 15.3115.31 0.270.27 0.650.65 배관(B)Piping (B) 70.0770.07 3.53.5 0.830.83 4.574.57 7.297.29 -- 0.930.93

표-1TABLE-1

이와 같이, 본 발명에 따른 연주공정 냉각시스템의 배관내 퇴적물 제거장치 및 그 방법에 의하면, 냉각탑으로부터 분사노즐을 향하는 배관 내부에 고전압펄스를 인가하여 냉각수에 포함된 오염물질을 전기적으로 분해함으로써, 배관 내부에 오염물질이 퇴적되는 것을 방지할 수 있다. As described above, according to the present invention, the apparatus for removing sediment in the pipe of the regeneration process cooling system according to the present invention and the method include applying a high voltage pulse to the inside of the pipe from the cooling tower toward the injection nozzle to electrically decompose contaminants contained in the cooling water. It is possible to prevent the accumulation of contaminants inside.

이에 의해, 배관의 관경 축소와 막힘 현상이 방지될 뿐만 아니라, 이에 의해, 분사노즐의 냉각수 분사압력과 분사각도 및 분사위치가 균형을 이루어 주편의 제품품질이 향상된다. Thereby, not only the pipe diameter reduction and the clogging phenomenon are prevented, but also the cooling water injection pressure of the injection nozzle and the injection angle and the injection position are balanced, thereby improving the product quality of the cast steel.

또한, 배관의 관경 축소와 막힘 현상이 방지됨으로써, 배관의 교체 및 정비 주기가 길어지고, 시스템의 유지관리가 매우 용이하게 이루어진다. 더불어, 연주공정의 냉각시스템 설비의 수명이 증가된다. In addition, by reducing the pipe diameter reduction and clogging phenomenon, the replacement and maintenance cycle of the pipe is long, and the maintenance of the system is very easy. In addition, the life of the cooling system equipment of the playing process is increased.

이상 설명한 바와 같이, 본 발명에 따르면, 배관의 관경 축소 및 막힘현상을 방지함과 동시에, 연주공정에서 생산되는 제품의 품질이 향상되며, 설비의 유지관리가 용이하고 수명이 증가되는 연주공정 냉각시스템의 배관내 퇴적물 제거장치 및 그 방법이 제공된다. As described above, according to the present invention, while reducing the pipe diameter reduction and clogging phenomenon, the quality of the product produced in the playing process is improved, the maintenance process of the equipment is easy to maintain the equipment and increase the lifespan An apparatus and a method for removing deposits in a pipe are provided.

Claims (6)

스케일피트와 침전조 및 그래벌필터와 냉각탑과 분사노즐의 냉각수 순환 구조를 갖는 연주공정 냉각시스템에 있어서, In the regeneration process cooling system having the cooling water circulation structure of the scale feet, the settling tank, the gravitational filter, the cooling tower and the injection nozzle, 고전압펄스를 발생시키는 고전압발생기와, A high voltage generator for generating a high voltage pulse, 상기 고전압발생기에서 발생된 고전압펄스을 상기 냉각탑과 상기 분사노즐을 연결하는 배관 내부로 인가하는 전극봉과, An electrode rod for applying a high voltage pulse generated by the high voltage generator to a pipe connecting the cooling tower and the injection nozzle; 상기 고전압발생기의 구동을 제어하는 제어부를 갖는 배관내 퇴적물 제거장치를 포함하는 것을 특징으로 하는 연주공정 냉각시스템. And an in-pipe sediment removal device having a control unit for controlling the driving of the high voltage generator. 제1항에 있어서, The method of claim 1, 상기 제어부는 The control unit 상기 고전압발생기에서 발생되는 고전압펼스를 DC 25,000V 내지 30,000V로 제어하는 것을 특징으로 하는 연주공정 냉각시스템. Cooling process cooling system characterized in that for controlling the high voltage spread generated in the high voltage generator to DC 25,000V to 30,000V. 제2항에 있어서, The method of claim 2, 상기 배관내 퇴적물 제거장치와 상기 분사노즐 사이에는 백워싱필터(Backwashing Filter)와 존필터(Zone Filter) 중 적어도 어느 하나가 더 마련되는 것을 특징으로 하는 연주공정 냉각시스템. At least one of a backwashing filter and a zone filter is further provided between the deposit removal device in the pipe and the injection nozzle. 스케일피트와 침전조 및 그래벌필터와 냉각탑과 분사노즐의 냉각수 순환 구조를 갖는 연주공정 냉각시스템에서 상기 냉각탑과 상기 분사노즐을 연결하는 배관 내부의 퇴적물을 제거하는 방법에 있어서, A method for removing deposits in a pipe connecting the cooling tower and the injection nozzle in a regeneration process cooling system having a scale fit, a sedimentation tank, a gravitational filter, a cooling tower and a cooling nozzle circulation structure, 상기 배관 내부에 고전압펄스를 인가하는 것을 특징으로 하는 연주공정 냉각시스템의 배관내 퇴적물 제거방법. And depositing high voltage pulses in the pipe. 제4항에 있어서, The method of claim 4, wherein 상기 고전압펼스는 DC 25,000V 내지 30,000V인 것을 특징으로 하는 연주공정 냉각시스템의 배관내 퇴적물 제거방법. The high voltage spread is a DC 25,000V to 30,000V, the sediment removal method in the pipe of the regeneration process cooling system, characterized in that. 제5항에 있어서, The method of claim 5, 상기 고전압펄스 인가 영역과 상기 분사노즐 사이에는 백워싱필터(Backwashing Filter)와 존필터(Zone Filter) 중 적어도 어느 하나가 더 마련되는 것을 특징으로 하는 연주공정 냉각시스템의 배관내 퇴적물 제거방법. At least one of a backwashing filter and a zone filter is further provided between the high voltage pulse applying region and the injection nozzle.
KR1020060131900A 2006-12-21 2006-12-21 Device for removing scale in the pipe of continuous casting plant cooling system and removing method thereof KR20080057943A (en)

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