KR200226273Y1 - Discharging Device of Pressure in Feed Hopper for Charging Pulverized Coal - Google Patents

Discharging Device of Pressure in Feed Hopper for Charging Pulverized Coal Download PDF

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Publication number
KR200226273Y1
KR200226273Y1 KR2020000035115U KR20000035115U KR200226273Y1 KR 200226273 Y1 KR200226273 Y1 KR 200226273Y1 KR 2020000035115 U KR2020000035115 U KR 2020000035115U KR 20000035115 U KR20000035115 U KR 20000035115U KR 200226273 Y1 KR200226273 Y1 KR 200226273Y1
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South Korea
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back pressure
pulverized coal
feed hopper
valve
pressure device
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KR2020000035115U
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Korean (ko)
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이범동
김석준
안준영
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포항종합제철주식회사
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Abstract

본 고안은 미분탄 취입설비인 피드호퍼의 배압장치에 관한 것으로, 특히 배압라인의 마모로 인하여 발생하는 미분탄의 대기 누출을 방지하고 정비 작업이 간단하며 설비 휴지를 방지할 수 있는 미분탄 취입용 피드호퍼의 배압장치에 관한 으로, 고로에 미분탄을 취입하는 미분탄 피드호퍼(61)로부터 내부에 규정된 압력을 유지하도록 압력을 배출하는 배압라인에 설치된 대형 밸브(56)와 병렬로 설치된 배압장치에 있어서, 소형 밸브(59)가 수용되는 배압기(80)의 상하로 미분탄과 혼합된 질소를 차단하기 위해 설치한 차단밸브(57,60)와,배압기(80)의 일측에 설치되어 소형 밸브(59)의 마모 상태를 점검하기 위한 점검구(12)와,배압기(80) 내부에 설치되어 배압 라인의 마모부를 이중으로 차단하도록 설치된 차단판(7)을 구비하여 이루어진다.The present invention relates to a back pressure device of a feed hopper which is a pulverized coal injection facility. Especially, a feed hopper for pulverized coal injection which can prevent the air leakage of pulverized coal generated by abrasion of the back pressure line, the maintenance work is simple, and the equipment can be stopped. In the back pressure device related to the back pressure device, in the back pressure device installed in parallel with the large valve 56 provided in the back pressure line for discharging the pressure from the pulverized coal feed hopper 61 for blowing the pulverized coal into the blast furnace to maintain the prescribed pressure therein, Shut-off valves 57 and 60 are installed to block nitrogen mixed with pulverized coal up and down of the back pressure chamber 80 in which the valve 59 is accommodated, and the small valve 59 is installed on one side of the back pressure chamber 80. And a check hole 12 for checking a wear state of the wearer, and a blocking plate 7 installed inside the back pressure 80 to block a wear part of the back pressure line.

Description

미분탄 취입용 피드호퍼의 배압장치{Discharging Device of Pressure in Feed Hopper for Charging Pulverized Coal}Discharging Device of Pressure in Feed Hopper for Charging Pulverized Coal}

본 고안은 미분탄 취입설비인 피드호퍼의 배압장치에 관한 것으로, 특히 배압라인의 마모로 인하여 발생하는 미분탄의 대기 누출을 방지하고 정비 작업이 간단하며 설비 휴지를 방지할 수 있는 미분탄 취입용 피드호퍼의 배압장치에 관한 것이다.The present invention relates to a back pressure device of a feed hopper which is a pulverized coal injection facility. Especially, a feed hopper for pulverized coal injection which can prevent the air leakage of pulverized coal generated by abrasion of the back pressure line, the maintenance work is simple, and the equipment can be stopped. It relates to a back pressure device.

일반적으로 피드호퍼의 배압장치를 도 1과 관련하여 설명하면, 미분탄 취입설비와 탈규재 취입설비의 피드호퍼(61)에 미분탄과 탈규재를 충진하여 일정한 압력으로 고로(70)의 내부나 경주통으로 분송하는 공정에 사용되는 설비로서, 배압 공정시 규정된 압력을 유지하기 위해 호퍼 내부의 압력을 조정하고 배압시키는 설비로서, 피드호퍼(61)와 저장호퍼(51) 사이의 리사이클링 라인에는 충진밸브(53~ 55)가 설치되고, 피드호퍼(61)에는 가압밸브(62)와 유동화밸브(63)가 설치되며, 피드호퍼(61)로부터 고로(70) 사이의 라인에는 취입밸브(65~67) 및 픽업기구(68)가 설치되며, 취입밸브(66,67)의 바이패스 라인에는 플러핑밸브(64)가 설치되어 있다.Generally, the back pressure device of the feed hopper will be described with reference to FIG. 1. The pulverized coal and desulfurization material is filled into the feed hopper 61 of the pulverized coal blowing facility and the desulfurization material blowing facility to the inside of the blast furnace 70 or the raceway at a constant pressure. As a facility used for dispensing, it is a facility for adjusting and backing the pressure inside the hopper to maintain a prescribed pressure during the back pressure process. The recycling line between the feed hopper 61 and the storage hopper 51 has a filling valve ( 53 to 55 are installed, the feed hopper 61 is provided with a pressure valve 62 and a fluidization valve 63, the inlet valve 65 to 67 in the line between the feed hopper 61 and the blast furnace 70 And a pick-up mechanism 68 is provided, and a fluffing valve 64 is provided in the bypass lines of the intake valves 66 and 67.

그리고 도 5 도시와 같이, 피드호퍼(61)로부터 저장호퍼(51)로의 배압라인에는 배압용 대형밸브 (56)와 병렬로 소형밸브(59)를 설치하여 배압장치를 구성하고있다.5, in the back pressure line from the feed hopper 61 to the storage hopper 51, the small pressure valve 59 is provided in parallel with the back pressure large valve 56, and the back pressure apparatus is comprised.

따라서, 이와 같이 현재 설치되어 있는 배압장치는 피드호퍼(61) 내부의 고압의 질소가 잔류 미분탄과 함께 배압될 때, 탄소가 주성분인 미분탄에 의해 배압장치의 배관을 국부적으로 마모시켜 미분탄이 대기로 누출되어 대기를 오염시키는 문제가 있다.Therefore, the presently installed back pressure device, when the high-pressure nitrogen in the feed hopper 61 is back-pressured together with the residual pulverized coal, the coal of the back pressure device is locally worn by the pulverized coal mainly composed of carbon so that the pulverized coal is brought into the atmosphere. There is a problem of leaking and polluting the air.

특히 마모된 배관을 정비하기 위하여 피드 호퍼 내부의 미분탄을 전량 저장호퍼(51)로 리사이클링하고 잔류질소를 배압후 플러핑 밸브(64), 유동화 밸브(63), 가압밸브(62), 및 배압 수동변(52)을 잠그고 정비 작업을 하지 않으면 안되므로 전후 공정이 복잡하고 피드호퍼(61)를 정지시키지 않으면 안되므로 미분탄의 취입량이 감소되어 용광로 내부 상황에 악영향을 미치는 문제가 있었다.In particular, in order to service the worn pipes, the pulverized coal inside the feed hopper is recycled to the storage hopper 51, and the residual nitrogen is back-pressured, and then the fluffing valve 64, the fluidization valve 63, the pressure valve 62, and the back pressure water. The maintenance of the east side 52 and the maintenance work must be done, so the front and rear process is complicated, and the feed hopper 61 must be stopped, so that the amount of pulverized coal is reduced, which adversely affects the internal situation of the furnace.

본 고안은 상기 설명한 종래 기술의 문제점을 해소하기 위하여 이루어진 것으로서, 마모부를 이중차단하도록 피드 호퍼의 배압부 상하단에 차단 밸브를 설치함으로써 미분탄의 대기 누출을 방지하여 미분탄 취입을 안정화시킴으로써 노황을 안정시킬 수 있는 미분탄 취입용 피드호퍼의 배압장치를 제공함에 그 목적이 있다.The present invention has been made in order to solve the problems of the prior art described above, by installing a shut-off valve in the upper and lower end of the back pressure portion of the feed hopper to double-block the wear portion to prevent the air leakage of pulverized coal and stabilize the pulverized coal injection It is an object of the present invention to provide a back pressure device for a feed hopper for pulverized coal injection.

상기 목적을 달성하기 위한 본 고안의 피드호퍼 배압장치는, 고로에 미분탄을 취입하는 미분탄 피드호퍼로부터 내부에 규정된 압력을 유지하도록 압력을 배출하는 배압라인에 설치된 대형 밸브와 병렬로 설치된 배압장치에 있어서, 소형 밸브가 수용되는 배압기의 상하로 미분탄과 혼합된 질소를 차단하기 위해 설치한 차단밸브와,배압기의 일측에 설치되어 소형 밸브의 마모 상태를 점검하기 위한 점검구와,배압기 내부에 설치되어 배압 라인의 마모부를 이중으로 차단하도록 설치된 차단판을 구비하여 이루어진다.The feed hopper back pressure device of the present invention for achieving the above object is, in the back pressure device installed in parallel with a large valve installed in the back pressure line for discharging the pressure from the pulverized coal feed hopper to blow the pulverized coal into the blast furnace to maintain the prescribed pressure therein. In order to block nitrogen mixed with pulverized coal up and down of the back pressure chamber in which the small valve is accommodated, a check valve installed on one side of the back pressure regulator to check the wear state of the small valve, It is provided with a blocking plate installed to block the wear portion of the back pressure line double.

도 1은 본 고안에 따른 피드호퍼의 배압장치가 설치된 미분탄 취입 계통을 개략적으로 도시한 도면이고,1 is a view schematically showing a pulverized coal injection system in which a back pressure device of a feed hopper according to the present invention is installed,

도 2는 도 1의 작은 원 부분을 확대하여 도시한 도면이고,FIG. 2 is an enlarged view of a small circle portion of FIG. 1;

도 3은 본 고안에 따른 배압장치를 단면으로 도시한 도면이며,3 is a cross-sectional view of the back pressure device according to the present invention,

도 4는 도 3 도시 장치의 사시도,4 is a perspective view of the device shown in FIG. 3;

도 5는 종래 미분탄 취입 계통에 설치되는 배압 설비를 도시한 도면이다.5 is a diagram illustrating a back pressure facility installed in a conventional pulverized coal injection system.

〈도면의 주요 부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>

1:상부 플랜지 2:개공관1: upper flange 2: open pipe

3:하부 플랜지 4:나사3: lower flange 4: screw

5:패킹 지지판 6,11:패킹5: packing support plate 6, 11: packing

7:차단판 8:배압기 본체7: Breaker plate 8: Back pressure body

9:점검구 본체 10:배압기 커버9: Inspection tool body 10: Back pressure cover

12:점검구 커버 14:조임나사12: Checking cover 14: Tightening screw

17:압력계 51:저장호퍼17: pressure gauge 51: storage hopper

56:배앙 대형밸브 57,60:차단밸브56: large valve 57, 60: shutoff valve

59:배압 소형밸브 61:피드호퍼59: Back pressure small valve 61: Feed hopper

이하에서는 양호한 실시예를 도시한 첨부 도면을 참조하여 본 고안을 상세하게 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings showing preferred embodiments.

도 1은 본 고안에 따른 피드호퍼의 배압장치가 설치된 계통을 개략적으로 도시한 도면이고, 도 2는 도 1의 작은 원 부분을 확대하여 도시한 도면이고, 도 3은 본 고안에 따른 배압장치를 단면으로 도시한 도면이며, 도 4는 도 3 도시 장치의 사시도이다.1 is a view schematically showing a system in which a back pressure device of a feed hopper according to the present invention is installed, FIG. 2 is an enlarged view of a small circle part of FIG. 1, and FIG. 3 is a back pressure device according to the present invention. It is a figure shown in cross section, and FIG. 4 is a perspective view of the apparatus shown in FIG.

도 1 및 도 2 도시와 같이, 본 고안에서는 소형밸브(59)가 장착된 배압기(80)의 전후방에 미분탄과 혼합된 질소를 차단해주는 차단밸브(57,60)를 설치하고 있으며, 도 3 도시와 같이, 배압라인의 마모부를 이중으로 차단하는 배압기 본체(8)와, 이중 배관의 마모 상태를 점검하고 소형 밸브(59)의 볼 마모 상태를 점검하기 위한 점검구(9)와, 점검구와 배압기 본체(8)를 지지해주는 지지부를 구비한다.1 and 2, in the present invention, the shutoff valves 57 and 60 for blocking nitrogen mixed with pulverized coal are installed in front and rear of the back pressure device 80 in which the small valve 59 is mounted. As shown in the drawing, a back pressure main body 8 for blocking the wear portion of the back pressure line is doubled, a check hole 9 for checking the wear state of the double pipe, and a ball wear state of the small valve 59; It has a support for supporting the back pressure main body (8).

차단밸브(57,60) 중에서 배압기(80)의 상부에는 제 1차단밸브(57)를 설치하고 배압기(80)의 하부에는 제2 차단밸브(60)를 설치하고 있으며, 상기 배압기(80)는 개공된 관(2)의 개공 대향측에 장착되고 있으며 직사각 형상으로 일측은 개방되고 반대측은 사각형 플랜지가 부착된 본체(8)와, 본체(8) 내부에 부착된 직사각 형상의 패킹 지지판(5)과, 그 후면에 설치된 패킹(6) 및 직사각형 차단판(7)을 구비한다.Among the shutoff valves 57 and 60, a first shutoff valve 57 is installed at an upper portion of the back pressure regulator 80, and a second shutoff valve 60 is installed at a lower portion of the back pressure regulator 80. 80 is mounted on the opposite side of the opening of the perforated tube 2 and has a rectangular shape, one side of which is open and the other side of which has a rectangular flange, and a rectangular packing support plate attached to the inside of the body 8. (5) and a packing 6 and a rectangular blocking plate 7 provided on the rear surface thereof.

배압기(80)의 외부에는 본체(8)의 사각형 플랜지부에 장착된 패킹(11)과 중앙에서 두개의 너트(13)로 고정되는 조임나사(14)가 구비되고 6개의 나사(4b)로 커버(10)가 결합되며 그 외측으로 압력계(17)가 부착된다.The outside of the back pressure 80 is provided with a packing 11 mounted on a rectangular flange portion of the main body 8 and a tightening screw 14 fixed with two nuts 13 at the center thereof, and with six screws 4b. The cover 10 is coupled and a pressure gauge 17 is attached to the outside thereof.

한편, 점검구(12)는 개공된 관(2)의 개공측에 부착되고 있는데, 직사각형 형상으로 일측은 개방되고 반대측은 사각형 플랜지가 부착된 본체(9)와, 본체(9)의 플랜지에 패킹(11a)을 개재하여 나사(4a)로 장착한 커버를 구비한다.On the other hand, the inspection opening 12 is attached to the opening side of the opened pipe (2), the main body (9) having a rectangular shape, one side is open and the opposite side is attached to a rectangular flange, and the packing on the flange of the body (9) ( The cover attached with the screw 4a through 11a) is provided.

본 고안에서 지지부는 개공된 관(2)과, 관(2)의 상부에 장착된 상부 플랜지(1)와 하부에 장착된 하부 플랜지(3)로 이루어진다.In the present invention, the support consists of a perforated tube 2, an upper flange 1 mounted on the upper part of the tube 2, and a lower flange 3 mounted on the lower part.

이하에서는 상기와 같이 구성된 본 고안의 피드호퍼 배압장치의 작동을 설명한다.Hereinafter will be described the operation of the feed hopper back pressure device of the present invention configured as described above.

도 3 도시와 같이, 배압기(80)의 본체(8) 내부에 설치된 차단판(7)은, 미분탄에 의해 개공된 관(2)의 개공부 반대측이 파손되어 미분탄이 차단판(7)에 부딪혀도 조임나사(14)로 패킹 지지판(5)과 차단판(7) 사이에 패킹(6)을 압착시켜 미분탄의 누출을 차단한다. 또한, 소량의 미분탄이 누출되는 경우에도 외부로의 누출을 차단하도록 배압기(80) 본체(8)의 사각 플랜지와 배압기 커버(10) 사이에 패킹(11)을 삽입설치하고 조임나사(14)로 견고하게 조이도록 구성되어 있다.As shown in FIG. 3, in the blocking plate 7 provided inside the main body 8 of the back pressure 80, the opposite side of the opening of the pipe 2 opened by the pulverized coal is broken so that the pulverized coal is applied to the blocking plate 7. Even if it hits, the packing 6 is pressed between the packing support plate 5 and the blocking plate 7 with a tightening screw 14 to block the leakage of pulverized coal. In addition, even if a small amount of pulverized coal leaks, the packing 11 is inserted between the square flange of the main body 8 of the back pressure collector 80 and the back pressure cover 10 so as to block leakage to the outside, and the tightening screw 14 It is configured to be firmly tightened with).

본 고안의 배압장치를 사용하는 중에 차단판(7)이 마모되면 압력계(17)를 통해 그 마모 여부를 검출할 수 있다.If the blocking plate 7 is worn while using the back pressure device of the present invention, it is possible to detect whether the wear is through the pressure gauge 17.

이와 같이 차단판(7)의 마모를 검출하면 차단판(7)의 교체가 필요한데, 우선 상하 차단밸브(57,60)를 잠그고 압력계(17) 하측의 배압밸브(16)를 개방하여 내부 압력을 제거한다.When the wear of the blocking plate 7 is detected in this way, the blocking plate 7 needs to be replaced. First, the upper and lower shutoff valves 57 and 60 are closed, and the back pressure valve 16 under the pressure gauge 17 is opened to increase the internal pressure. Remove

이어서, 조임나사(14)를 다소 후퇴시키고 고정나사(4b)를 풀러서 커버(10)를 분리시킨다. 이후, 내부의 차단판(7)을 교체후에 재조립하여 사용한다.Then, the tightening screw 14 is slightly retracted and the fixing screw 4b is loosened to separate the cover 10. Thereafter, the internal blocking plate 7 is replaced and used after replacement.

한편, 점검구(12)는 배압용 소형밸브(59)의 마모 상태를 점검하기 위한 것으로, 상하 차단밸브(57,60)를 잠근후 고정나사(4a)를 풀러 점검구(12) 커버를 해체후 개공된 관(2)의 개공부를 통해 거울을 사용하여 하부의 배압용 소형밸브(59)의 마모 상태를 점검하도록 되어 있다. 점검후 점검구(12)는 커버를 재조립하여 사용하도록 되어 있다.On the other hand, the inspection port 12 is for checking the wear state of the back pressure small valve 59, and after closing the upper and lower shut-off valves (57, 60), loosen the set screw (4a) and open the cover after removing the cover (12). The wear state of the lower back pressure small valve 59 is checked by using a mirror through the opening of the pipe 2 that has been used. After the inspection, the inspection opening 12 is used to reassemble the cover.

따라서, 상기 설명한 바와 같은 본 고안의 피드호퍼 배압장치에 의하면, 이중으로 미분탄의 대기 누출을 차단하도록 구성함으로써 대기 오염을 확실하게 방지할 수 있으며, 상하로 차단밸브를 설치하여 정비 작업시 전후 공정을 대폭적으로 감소시켜 정비 능률을 향상시킬 수 있으며 설비의 파손을 방지하여 미분탄을 안정적으로 취입할 수 있으므로 노황이 안정되는 효과가 얻어진다.Therefore, according to the feed hopper back pressure device of the present invention as described above, by configuring to block the air leakage of pulverized coal double, it is possible to reliably prevent the air pollution, and to install the shut-off valve up and down, Significantly reduced, can improve the maintenance efficiency, and can prevent the damage of the equipment, so that the pulverized coal can be stably blown, the effect of stabilizing the yellowing is obtained.

Claims (1)

고로에 미분탄을 취입하는 미분탄 피드호퍼(61)로부터 내부에 규정된 압력을 유지하도록 압력을 배출하는 배압라인에 설치된 대형 밸브(56)와 병렬로 설치된 배압장치에 있어서, 소형 밸브(59)가 수용되는 배압기(80)의 상하로 미분탄과 혼합된 질소를 차단하기 위해 설치한 차단밸브(57,60)와,In the back pressure device installed in parallel with the large valve 56 installed in the back pressure line for discharging the pressure from the pulverized coal feed hopper 61 which blows the pulverized coal into the blast furnace, the small valve 59 is accommodated. Shut-off valves (57, 60) installed to block the nitrogen mixed with the pulverized coal up and down of the back pressure to be 80, 배압기(80)의 일측에 설치되어 소형 밸브(59)의 마모 상태를 점검하기 위한 점검구(12)와,A check hole 12 installed at one side of the back pressure 80 to check a wear state of the small valve 59; 배압기(80) 내부에 설치되어 배압 라인의 마모부를 이중으로 차단하도록 설치된 차단판(7)을 구비하는 것을 특징으로 하는 미분탄 취입용 피드호퍼의 배압장치.The back pressure device of the feed hopper for pulverized coal injection, characterized in that it is provided in the back pressure (80) is provided with a blocking plate (7) installed to block the wear portion of the back pressure line double.
KR2020000035115U 2000-12-15 2000-12-15 Discharging Device of Pressure in Feed Hopper for Charging Pulverized Coal KR200226273Y1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100970890B1 (en) * 2008-04-23 2010-07-16 강형민 Internal pressure socket for build up removal process
KR100970889B1 (en) * 2008-04-23 2010-07-16 강형민 Internal pressure socket for build up removal process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100970890B1 (en) * 2008-04-23 2010-07-16 강형민 Internal pressure socket for build up removal process
KR100970889B1 (en) * 2008-04-23 2010-07-16 강형민 Internal pressure socket for build up removal process

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