KR890002975Y1 - Cooling system of hot roll plate in examination - Google Patents

Cooling system of hot roll plate in examination Download PDF

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Publication number
KR890002975Y1
KR890002975Y1 KR2019840014294U KR840014294U KR890002975Y1 KR 890002975 Y1 KR890002975 Y1 KR 890002975Y1 KR 2019840014294 U KR2019840014294 U KR 2019840014294U KR 840014294 U KR840014294 U KR 840014294U KR 890002975 Y1 KR890002975 Y1 KR 890002975Y1
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South Korea
Prior art keywords
steel sheet
cooling
cooling water
header
tube
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KR2019840014294U
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Korean (ko)
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KR860007408U (en
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강기봉
박완희
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포항종합제철 주식회사
고준식
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Priority to KR2019840014294U priority Critical patent/KR890002975Y1/en
Publication of KR860007408U publication Critical patent/KR860007408U/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B45/00Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203Cooling
    • B21B45/0209Cooling devices, e.g. using gaseous coolants

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)

Abstract

내용 없음.No content.

Description

실험실용 열연강판의 냉각장치Cooling device of laboratory hot rolled steel

제1도는 종래의 냉각장치를 도시한 구성도.1 is a block diagram showing a conventional cooling device.

제2도는 본 고안의 구성도.2 is a block diagram of the present invention.

제3도는 제2도의 상부헤더를 도시한 것으로서, (a) 는 상부 헤더를 일부 절개한 구성도, (b)는 (a) 의 B-B'선에 대한 단면도, (c)는 (a)의 A부분을 확대한 상세도.3 is a view showing the upper header of FIG. 2, (a) is a configuration diagram partially cutting the upper header, (b) is a cross-sectional view taken along line B-B 'of (a), (c) is (a) Detailed view zoomed in on part A.

제4도는 제2도의 하부헤더를 도시한 구성도.4 is a block diagram showing the lower header of FIG.

제5도는 제2도에서 체인의 연결상태를 도시한 것으로서, (a)는 제2도의 A부 상세도, (b)는 제2도의 B부 상세도.FIG. 5 shows the chain connection in FIG. 2, where (a) is the detail of part A of FIG. 2 and (b) is the detail of part B of FIG.

제6도는 본 고안의 상부헤더와 종래의 상부헤더의 수압비교도.6 is a pressure comparison of the upper header of the present invention and the conventional upper header.

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

3A : 상부헤더 4A : 하부헤더3A: Upper header 4A: Lower header

32 : 외관 33 : 내관32: appearance 33: inner tube

34 : 원판 42 : 본관34: original 42: main building

43 : 배분관 44 : 소구경관43: distribution pipe 44: small diameter view

45 : 대구경관45: Daegu Landscape

본 고안은 실험실에서 열간압연중인 강판을 열처리하기 위한 실험실용 열연강판의 냉각장치에 관한 것이다.The present invention relates to a cooling device for a laboratory hot rolled steel sheet for heat-treating the steel sheet being hot rolled in the laboratory.

종래의 이러한 기술과 관련된 열연강판의 냉각장치는 제1도에서와 같이 로울러(Roller, 1) 위에서 이동되는 강판(2)의 상하부에 헤더(Header, 3, 4)가 위치하고, 이 헤더(3, 4)에 부착된 다수개의 노즐(Nozzle, 31, 41)로부터 분사되는 냉각수에 의해서 강판(2)이 냉각되며, 압축공기나 증기를 분사시키기 위한 잔류냉각수 제거노즐(5)이 강판(2)의 상부에 위치되어 있다.In the conventional apparatus for cooling a hot rolled steel sheet according to the related art, headers 3 and 4 are positioned at upper and lower portions of the steel sheet 2 moving on the roller 1 as shown in FIG. 4) The steel sheet 2 is cooled by the coolant sprayed from the nozzles 31 and 41 attached to the nozzle 4, and the residual coolant removing nozzle 5 for blowing compressed air or steam is provided with It is located at the top.

이러한 종래의 열연강판을 열처리하는 공정은 강판(2)이 로울러(1) 위에서 이동되면서, 강판(2)의 상부와 하부에서 분사되는 냉각수에 의해서 냉각된다.The process of heat-treating the conventional hot rolled steel sheet is cooled by cooling water sprayed from the upper and lower portions of the steel sheet 2 while the steel sheet 2 is moved above the roller 1.

이때, 강판(2)의 하부는 냉각수가 강판(2)을 냉각시킨후 잔류냉각수가 자연적 낙하되므로 잔류냉각수가 강판(2)에 남지않으나, 강판(2)의 상부는 잔류냉각수 제거노즐(5)로 압축공기나 증기를 분사시켜도 잔류냉각수가 남아 불균일하게 분포되어 불균일한 냉각이 된다.At this time, since the remaining cooling water naturally falls after the cooling water cools the steel plate 2, the lower portion of the steel plate 2 does not remain in the steel sheet 2, but the upper portion of the steel plate 2 is the residual coolant removal nozzle 5 Even if compressed air or steam is injected into the furnace, the remaining cooling water remains unevenly distributed, resulting in uneven cooling.

이러한 상하부 냉각의 상이로 강판(2)의 변형과 조직이 불균일하게 되는 문제점이 발생되었다.This difference in upper and lower cooling caused a problem in that the deformation and structure of the steel sheet 2 became non-uniform.

또, 상하부 레버(3, 4)내의 각부분 노즐(31, 41)부의 냉각수압차가 크기 때문에 냉각수의 분사량이 다르고 이로 인해 불균일한 냉각이 초래되는 것이었다. 본 고안은 상기와 같은 종래의 제반문제점을 해소하기 위한 것으로, 상부헤더와 외관내에 오리피스(orifice)를 갖는 원판과 내관을 마련하고, 하부헤더는 다수의 노즐을 가진 배분관이 본관에 소경관과 대경관에 의해 연통되어 마련하므로서, 강판의 상하면에 균일하게 냉각수가 분사되어 균일냉각 및 냉각속도제어를 할 수 있는 실험실용 열연강판의 냉각장치를 제공하려는 것이다.In addition, since the cooling water pressure difference between the nozzles 31 and 41 in the upper and lower levers 3 and 4 is large, the injection amount of the cooling water is different, which causes uneven cooling. The present invention is to solve the conventional problems as described above, to provide a disc and an inner tube having an orifice (orifice) in the upper header and the exterior, the lower header has a small diameter tube and a distribution pipe having a plurality of nozzles It is to provide a cooling device for a laboratory hot-rolled steel sheet that can be provided in communication with the large diameter tube, the cooling water is uniformly sprayed on the upper and lower surfaces of the steel sheet to perform uniform cooling and cooling rate control.

이하에서 본 고안을 첨부된 도면에 의거 상세하게 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

제2도 내지 제5도에 도시한 바와 같이 상하부 헤더(3A, 4A) 사이에 강판(2)이 통과되게 로울러(1)와 체인(6)이 구성되고, 일측 하부에는 변속모터(7)가 설치되어 강판(2)의 이송속도를 조절할 수 있게 구성되어 있다.As shown in FIGS. 2 to 5, the roller 1 and the chain 6 are configured to pass the steel plate 2 between the upper and lower headers 3A and 4A, and the shifting motor 7 is disposed at one lower side. Is installed is configured to be able to adjust the feed rate of the steel sheet (2).

상기 로울러(1)는 제5도의 (a) (b)와 같이 로울러(1)의 일측단에 설치된 스프로켓(sproket, 8)과 체인(6)에 의해 한 방향으로만 회전된다.The roller 1 is rotated in only one direction by a sprocket 8 and a chain 6 installed at one end of the roller 1 as shown in (a) and (b) of FIG. 5.

상기 상, 하부 헤더(3A, 4A)하방에 냉각수 수집탱크(9)가 마련하고, 상, 하부 헤더(3A, 4A)와 냉각수 수집탱크(9)가 연결된 냉각수 배관(10)에 냉각수 가압펌프(11)가 설치되어 있다.Cooling water collection tank 9 is provided below the upper and lower headers 3A and 4A, and the cooling water pressurizing pump is connected to the cooling water pipe 10 to which upper and lower headers 3A and 4A and the cooling water collection tank 9 are connected. 11) is installed.

상기 상부헤더(3A)는 제3도와 같이 다수의 노즐(31)을 갖는 외관(32)의 내부에 내관(33)이 지지되고, 유입구측으로부터 내관(33)과 떨어져 오리피스(d)를 갖는 원판(34)이 구성되어 있다.The upper header 3A has an inner tube 33 supported inside the outer shell 32 having a plurality of nozzles 31 as shown in FIG. 3 and has an orifice d away from the inner tube 33 from the inlet side. 34 is comprised.

더욱 상세히는, 외관(32)의 내경을 "D", 내관(33)의 내경을 "D'" 내관(33)의 외경은 "D"", 내관(33)과 원판(34)의 거리는 "L" 이라 할때, 원판(34)의 오리피스경(d)은 외관(32)의 내경 (D)의 3/5- 4/5로 하는 것이 적합하고, 내관(33)과 원판(34)의 거리(L)는 원판(34)의 오리피스경(d)에 의해서 발생되는 난류가 없어지는 거리로써 외관(32)의 내경(D)와 원판(34)의 오리피스경(d)에 따라 달라지게 된다.More specifically, the inner diameter of the outer tube 32 is "D", the inner diameter of the inner tube 33 is "D '" The outer diameter of the inner tube 33 is "D", and the distance between the inner tube 33 and the disc 34 is "D". L ", the orifice diameter d of the disc 34 is preferably 3/5-4/5 of the inner diameter D of the outer shell 32, and the orifice diameter of the inner tube 33 and the disc 34 is The distance L is a distance from which turbulence generated by the orifice diameter d of the disc 34 disappears, and depends on the inner diameter D of the exterior 32 and the orifice diameter d of the disc 34. .

그러므로, 외관(32) 내부의 냉각수 수압은 외관(32)의 각 노즐부(31)부 수압이 거의 일정해짐으로서 첫 번째 노즐에서나 맨끝의 노즐에서 분사되는 냉각수량이 같게 된다.Therefore, the cooling water pressure in the exterior 32 is almost constant in the hydraulic pressure in each nozzle section 31 of the exterior 32 so that the amount of cooling water injected from the first nozzle or the nozzle at the end is the same.

또, 내관(33)의 내경(D')은 원판(34)의 오리피스경(d)과 같은 경우에는 효과가 없고, 내관(33)의 외경(D")과 외관(32)의 내경(D)을 합한 그 값이 절반보다 큰 경우에도 효과가 없다.In addition, the inner diameter D 'of the inner tube 33 is not effective in the case of the orifice diameter d of the disc 34, and the outer diameter D "of the inner tube 33 and the inner diameter D of the exterior 32 are not effective. ) Is not effective even if the combined value is greater than half.

상기 하부헤더 (4A)는 제4도와 같이 다수의 노즐(41)을 가진 배분관(42)을 본관(43)에 소구경관(44)과 대구경관(45)에 의해 연통되어 고착되어 있다.The lower header 4A communicates with and distributes the distribution pipe 42 having the plurality of nozzles 41 to the main building 43 by the small-diameter pipe 44 and the large-diameter pipe 45 as shown in FIG.

또, 상기 하부헤데(4A)의 소구경관(44)은 하부헤더(4A)의 냉각수 유입측에 위치되어 있어, 상기 본관(43)의 압력손실 및 기타 제반손실에 의한 압력차가 발생됨을 감안한 것이다.In addition, the small diameter tube 44 of the lower head 4A is located on the cooling water inlet side of the lower header 4A, and it is considered that a pressure difference due to pressure loss and other losses of the main tube 43 is generated.

그러므로 상기 소구경관(44)에서는 작은경에서 속도가 빠르게 유출되고 상기 대구경관(45)에서는 큰경에서 속도가 느리게 유출되므로 결국 강판(2)의 전면에 균일하게 냉각수가 분사된다.Therefore, the small diameter tube 44 flows out quickly at a small diameter, and the large diameter tube 45 flows out slowly at a large diameter, so that cooling water is uniformly sprayed on the front surface of the steel sheet 2.

미설명부호 21은 냉각개시 온도측정용 방사온도계, 22는 냉각종료 온도측정용 방사온도계이다.Reference numeral 21 is a radiation thermometer for measuring the start temperature of cooling, and 22 is a radiation thermometer for measuring the temperature of cooling finish.

이와 같이 구성된 본 고안은 미도시의 운전판넬에 먼저 변속모터(7)의 속도를 필요로 하는 속도에 맞추고, 냉각수 가압펌프(l1)를 필요로 하는 압력에 맞추어 냉각수량을 정한후, 고온강판(2)을 입구측 로울러(1)위에 두면 일동속도로 구동하는 로울러(1)에 의해 강판(2)은 로울러(1) 위를 진행하게 되고, 방사온도계(21)에 의해 냉사개시온도가 측정되며, 냉각구역에서 상하부 헤더(10, 14)에 의해 냉각된 후 방사온도계(22)로 냉각종료온도를 측정하게 된다.According to the present invention configured as described above, the speed of the shifting motor 7 is first adjusted to the speed required for the operation panel of the non-illustrated drawing, and the amount of cooling water is determined according to the pressure required for the cooling water pressurizing pump l1, and then the high temperature steel sheet ( When 2) is placed on the inlet side roller (1), the steel plate (2) proceeds on the roller (1) by the roller (1) driving at the same speed, the cold start temperature is measured by the radiation thermometer (21) After cooling by the upper and lower headers 10 and 14 in the cooling zone, the cooling end temperature is measured by the radiation thermometer 22.

상술한 바와 같이 본 고안에 의하면, 변속모터(87)의 속도로부터 냉각구역의 통과시간을 미 리 알 수 있고, 방사온도계(21, 22)로써 냉각개시온도와 종료온도를 알 수 있음은 물론 변속모터(7)의 속도를 임의로 설정하여 냉각시간을 변화시키고 냉각수 가압펌프(11)로 냉각수압력을 변화시켜 냉각수량도 임의로 조절된다.As described above, according to the present invention, the passage time of the cooling zone can be known in advance from the speed of the transmission motor 87, and the cooling start temperature and the end temperature can be known as the radiation thermometers 21 and 22 as well as the shift The speed of the motor 7 is arbitrarily set to change the cooling time, and the cooling water pressure is changed by the cooling water pressurizing pump 11 to arbitrarily adjust the amount of cooling water.

또, 상하부 헤더(3A, 4A)의 각 조즐(31, 41)부 냉각수수압이 제6도와 같이 거의 일정하여 균일한 냉각수량이 분사되고, 강판(2) 상부의 잔류냉각수가 제거되므로서, 냉각효율이 증대되고, 길이방향 및 폭방향의 냉각이 균일하게 되며, 냉각속도제어도 용이하게 되는등의 실용상 유익한 특장점이 있는 것이다.In addition, the cooling water pressure of each of the joules 31 and 41 of the upper and lower headers 3A and 4A is almost constant as shown in FIG. 6, so that a uniform amount of cooling water is injected, and the remaining cooling water on the upper part of the steel sheet 2 is removed, thereby cooling. There is a practically advantageous feature such that the efficiency is increased, the cooling in the longitudinal direction and the width direction becomes uniform, and the cooling rate control is also easy.

Claims (1)

로울러(1) 위에서 이동되는 강판(2)의 상하부에 상하부헤더(3, 4)가 위치하고, 이 헤더(3, 4)에 부착된 다수의 노즐(31, 41)로 분사되는 냉각수에 의해 강판(2)이 냉각되며, 잔류냉각수 제거노즐(5)이 강판(2) 위에 위치되어 있는 것에 있어서, 상기 상부헤더(3)는 다수의 노즐(31)을 갖는 외관(32)의 내부에 내관(33)이 지지되고, 유입구측으로부터 내관(23)과 떨어져 오리피스(d)를 갖는 원판(34)으로 구성된 상부헤더(3A)로 되며, 상기 하부헤더(4)는 다수의 노즐(41)을 갖는 배분관(42)이 본관(43)에 연통된 소구경관(44)과 대구경관(45)이 고착된 하부헤더(4A)로 됨을 특징으로 하는 실험실용 열연강판의 냉각장치.Upper and lower headers 3 and 4 are positioned at the upper and lower portions of the steel sheet 2 moving on the roller 1, and the steel sheet is formed by the coolant sprayed to the plurality of nozzles 31 and 41 attached to the headers 3 and 4. 2) is cooled and the residual coolant removal nozzle 5 is located on the steel plate 2, wherein the upper header 3 has an inner tube 33 inside the exterior 32 having a plurality of nozzles 31. As shown in FIG. ) Is supported, and becomes an upper header 3A composed of a disk 34 having an orifice d away from the inner tube 23 from the inlet side, and the lower header 4 is distributed with a plurality of nozzles 41. The pipe 42 is a cooling device for a laboratory hot rolled steel sheet, characterized in that the small diameter tube 44 and the large diameter tube 45 is in communication with the main tube 43 is fixed to the lower header (4A).
KR2019840014294U 1984-12-28 1984-12-28 Cooling system of hot roll plate in examination KR890002975Y1 (en)

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Application Number Priority Date Filing Date Title
KR2019840014294U KR890002975Y1 (en) 1984-12-28 1984-12-28 Cooling system of hot roll plate in examination

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Application Number Priority Date Filing Date Title
KR2019840014294U KR890002975Y1 (en) 1984-12-28 1984-12-28 Cooling system of hot roll plate in examination

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KR860007408U KR860007408U (en) 1986-07-12
KR890002975Y1 true KR890002975Y1 (en) 1989-05-13

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