EP1473350B1 - Ofenwandbeobachtungsvorrichtung - Google Patents

Ofenwandbeobachtungsvorrichtung Download PDF

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Publication number
EP1473350B1
EP1473350B1 EP20030700487 EP03700487A EP1473350B1 EP 1473350 B1 EP1473350 B1 EP 1473350B1 EP 20030700487 EP20030700487 EP 20030700487 EP 03700487 A EP03700487 A EP 03700487A EP 1473350 B1 EP1473350 B1 EP 1473350B1
Authority
EP
European Patent Office
Prior art keywords
oven
oven wall
insulated container
image
heat insulated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP20030700487
Other languages
English (en)
French (fr)
Other versions
EP1473350A4 (de
EP1473350A1 (de
Inventor
Masato Sugiura
Hizuru Egawa
Shuji Naito
Masahiko Yokomizo
Michitaka Sakaida
Manabu Kuninaga
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel and Sumitomo Metal Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2002231370A external-priority patent/JP3996813B2/ja
Priority claimed from JP2002237948A external-priority patent/JP4133106B2/ja
Application filed by Nippon Steel and Sumitomo Metal Corp filed Critical Nippon Steel and Sumitomo Metal Corp
Publication of EP1473350A1 publication Critical patent/EP1473350A1/de
Publication of EP1473350A4 publication Critical patent/EP1473350A4/de
Application granted granted Critical
Publication of EP1473350B1 publication Critical patent/EP1473350B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B29/00—Other details of coke ovens
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M5/00—Casings; Linings; Walls
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B41/00—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
    • F27D21/02—Observation or illuminating devices
    • F27D2021/026—Observation or illuminating devices using a video installation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
    • F27D21/0021—Devices for monitoring linings for wear

Definitions

  • the image is captured by a camera from a direction slanted with respect to the oven walls.
  • a video camera housed in a heat insulated container is oriented vertical to the wall surface to capture an image.
  • the data recorder 22 is sent the capture current position data 35 found based on the current position data of the pusher ram 44, so this data is also sent to the processor 30 and image display 31.
  • the center beam vertical plane when making the spot beam at the center of the width direction of the beam in the light beam 63 generating the line of light 65 the center beam 69, the plane including the center beam 69 vertical to the oven wall surface 66 will be referred to here as the "center beam vertical plane".
  • intersecting line 70 The line where the plane formed by the oven wall and the plane formed by the mirror surface intersect will be referred to here as the "intersecting line 70".
  • the intersecting line 70 becomes a line in the vertical direction.
  • the camera apparatus 8 it is possible to adjust the aperture of the optical system or adjust the exposure time in accordance with the luminance of the oven wall surface and thereby obtain an optimal image of the oven wall surface. Normally, it is possible to automatically obtain the optimal image by the exposure control function of the camera apparatus 8.
  • the measurement apparatus of the present invention moves inside the oven, it is preferable to use a radiation thermometer as a temperature measuring means. Further, in measuring the intensity of the thermal radiation light, it is also possible to measure the average intensity of light of the total wavelength of the visible light, but it is also possible to take out and measure only the light intensity of the wavelength region centered on the wavelength of the light beam emitted.
  • the total damage of the left and right sides can be calculated based on this measured value.'At the very least, if the viewed portions at the left and right are sound portions where no local damage is viewed, since it may be considered that the damage will proceed evenly at the left and right, half of the total damage measured can be evaluated as the damage of the oven wall at each sound portion.
  • the heat insulated container returned from the 1000°C oven is high in temperature at the outside, so the inside data cannot be taken out until after the elapse of a certain time.
  • the trouble of taking out the oven wall shape measurement apparatus 61 from the oven, then waiting until the apparatus cools before taking out the image data is not required, so it is possible to quickly confirm the state of the oven walls. Further, it is possible to immediately use the oven wall shape measurement apparatus 61 taken out from the coking chamber for viewing of the next coking chamber.
  • an opening or a safety valve is provided at the top of the heat insulated container 3.
  • the car 40 of the pusher 43 continuously successively repeats the work of pushing out the coke of the coking chamber finished being carbonized while moving on rails at 5 to 10 minute intervals and simultaneously measures the shapes of the oven walls of a large number of coking chambers.
  • the camera apparatus 8 is moved in the depth direction of the oven by for example as shown in Fig. 3 mounting the heat insulated container 3 housing the camera apparatus 8 etc. on the coke pusher 43 and inserting the coke pusher 43 into the oven or extracting it from the oven at a constant speed by operation of a ram driver 46. It is possible to move the camera apparatus 8 while continuously capturing images and view the results of capture as a moving image.
  • the light beam emitters 62a and 62b were arranged at positions of the same height as the camera apparatus 8 in the first embodiment as shown in FIG. 12(a) and emitted light beams 63 generating lines of light 65.
  • the direction of emission of the center beam 69 was the horizontal direction.
  • the beam was emitted in a slanted direction at an angle ⁇ with the oven wall surface 66 of 30°.
  • the line of light 65 was oriented in the height direction in the oven wall surface 66.
  • the length of the line of light 65 at the oven wall surface 66 was 200 mm.

Claims (7)

  1. Ofenwand-Betrachtungsvorrichtung zum Betrachten von Oberflächen zu ihr weisender Ofenwände, wobei die Ofenwand-Betrachtungsvorrichtung dadurch gekennzeichnet ist, dass eine Kameravorrichtung (8) in einem wärmeisolierten Behälter (3) untergebracht ist, eine Spiegelfläche (2) an der Außenseite des wärmeisolierten Behälters (3) angeordnet ist und ein an der Spiegelfläche (2) reflektiertes Bild einer Ofenwandfläche durch die Kameravorrichtung erfasst wird, wobei dem wärmeisolierten Behälter (3) kein Kühlwasser von außerhalb des Ofens zugeführt wird und er keine mit ihm verbundenen Stromleitungen oder Signaladern hat, der wärmeisolierte Behälter (3) einen Mantel (5), der mit einer Flüssigkeit mit Wärmeaufnahmevermögen gefüllt ist, und ferner ein Wärmesioliermaterial (4) hat, das ihn an der Außenseite abdeckt, die Spiegelfläche zwei Spiegelflächen (2a, 2b) in unterschiedlichen Winkeln aufweist und die Spiegelflächen Oberflächen der zu ihnen weisenden Ofenwände reflektieren und die Spiegelfläche die Oberfläche eines Behälters (11) aufweist, der Kühlwasser in seinem Inneren enthält.
  2. Ofenwand-Betrachtungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass im wärmeisolierten Behälter (3) ein drahtloser Sender (18) untergebracht ist, ein drahtloser Empfänger (21) und ein Datenschreiber (30) außerhalb des Ofens angeordnet sind und durch die Kameravorrichtung (8) erfasste Informationen vom drahtlosen Sender (18) zum drahtlosen Empfänger (21) gesendet und am Datenschreiber (30) aufgezeichnet werden.
  3. Ofenwand-Betrachtungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass im wärmeisolierten Behälter (3) ein Datenschreiber (30) untergebracht ist und durch die Kameravorrichtung (8) erfasste Informationen im Datenschreiber (30) aufgezeichnet werden.
  4. Ofenwand-Betrachtungsvorrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass der Datenschreiber (30) auch Positionsinformationen der Kameravorrichtung (8) innerhalb des Ofens aufzeichnet.
  5. Ofenwand-Betrachtungsvorrichtung nach einem der Ansprüche 2 bis 4, gekennzeichnet durch Erfassen eines Bilds bei gleichzeitigem Bewegen der Kameravorrichtung in Tiefenrichtung des Ofens und Aufzeichnen der erfassten Daten im Datenschreiber (30).
  6. Ofenwand-Betrachtungsvorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass der Datenschreiber (30) mehrere durch Erfassen eines Bilds erhaltene erfasste Daten kombiniert, um ein Bild eines breiten Bereichs in Tiefenrichtung des Ofens zu erhalten.
  7. Ofenwand-Betrachtungsvorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass es sich bei den Ofenwänden um Ofenwände einer Verkokungskammer eines Koksofens handelt und dass der wärmeisolierte Behälter (3) und die Spiegelfläche (2) an einem Ausdrücker (43) des Koksofens angeordnet sind.
EP20030700487 2002-01-09 2003-01-08 Ofenwandbeobachtungsvorrichtung Expired - Lifetime EP1473350B1 (de)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP2002002342 2002-01-09
JP2002002342 2002-01-09
JP2002231370A JP3996813B2 (ja) 2002-01-09 2002-08-08 炉壁観察装置
JP2002231370 2002-08-08
JP2002237948A JP4133106B2 (ja) 2002-08-19 2002-08-19 炉壁形状測定装置
JP2002237948 2002-08-19
PCT/JP2003/000072 WO2003066775A1 (en) 2002-01-09 2003-01-08 Furnace wall observation device and furnace wall shape measuring device

Publications (3)

Publication Number Publication Date
EP1473350A1 EP1473350A1 (de) 2004-11-03
EP1473350A4 EP1473350A4 (de) 2010-10-06
EP1473350B1 true EP1473350B1 (de) 2015-04-29

Family

ID=27738888

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030700487 Expired - Lifetime EP1473350B1 (de) 2002-01-09 2003-01-08 Ofenwandbeobachtungsvorrichtung

Country Status (6)

Country Link
EP (1) EP1473350B1 (de)
KR (1) KR100615106B1 (de)
CN (1) CN1290969C (de)
AU (1) AU2003201914B2 (de)
BR (1) BR0302581B1 (de)
WO (1) WO2003066775A1 (de)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE510182T1 (de) * 2004-11-08 2011-06-15 Matthias Franke Verfahren zur optisch-geometrischen vermessung eines innenraumes einer thermoprozessanlage
JP4873962B2 (ja) * 2006-02-27 2012-02-08 関西熱化学株式会社 炉内観察装置およびそれを備えた押出ラム
JP4262281B2 (ja) * 2007-02-22 2009-05-13 新日本製鐵株式会社 コークス炉の壁面評価装置、コークス炉の壁面評価方法、及びコンピュータプログラム
KR100825567B1 (ko) * 2007-07-13 2008-04-25 주식회사 포스코 코크스 오븐 내부의 형상을 화상 판독하는 장치 및 방법
WO2009119501A1 (ja) * 2008-03-24 2009-10-01 株式会社Ｉｈｉ検査計測 炉内観察方法及び装置
CN101576376B (zh) * 2008-12-24 2012-10-10 北京神网创新科技有限公司 激光检测料面形状的方法和系统
JP6227220B2 (ja) * 2010-12-27 2017-11-08 Ｊｆｅスチール株式会社 炉壁形状測定装置、炉壁形状測定システム、および炉壁形状測定方法
KR101184105B1 (ko) 2011-10-28 2012-09-18 인하대학교 산학협력단 후면볼록거울을 이용한 깊이감 측정 방법 및 장치
WO2014154474A1 (de) * 2013-03-26 2014-10-02 Siemens Vai Metals Technologies Gmbh Elektronikschutzgehäuse zur aufnahme einer elektronik
US9638421B2 (en) * 2014-02-14 2017-05-02 Andritz Inc. Startup burner assembly for recovery boiler and method
FI126660B (en) * 2014-04-11 2017-03-31 Outotec Finland Oy METHOD AND ARRANGEMENT FOR MONITORING THE PERFORMANCE OF THE SUSPENSION DEFROSTING BURNER
JP6599603B2 (ja) * 2014-04-18 2019-10-30 東芝ライフスタイル株式会社 自律走行体
CN103980913A (zh) * 2014-05-30 2014-08-13 武汉科技大学 一种焦炉高温检测及炉墙陶瓷焊补设备
DE102015203314B4 (de) * 2015-02-24 2016-09-29 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren und System zum Überwachen von Prozessen in einer thermischen Prozesskammer
EP3118554A1 (de) * 2015-07-17 2017-01-18 Refractory Intellectual Property GmbH & Co. KG Verfahren insbesondere zur ausbesserung einer feuerfestauskleidung eines metallurgischen gefässes im heissen zustand
TWI576567B (zh) * 2016-01-18 2017-04-01 中國鋼鐵股份有限公司 高爐用之微波料深尺
US10060725B2 (en) 2016-11-20 2018-08-28 Process Metrix Scanning laser range finder with surface temperature measurement using two-color pyrometry
CN109668536B (zh) * 2019-03-01 2023-08-25 广西玉柴机器股份有限公司 一种炉体检测仪及检测方法
CN115505415B (zh) * 2022-08-25 2023-09-22 江苏博颂能源科技有限公司 一种催化裂解中试装置用多向闭合检测单元

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2205952A (en) * 1938-08-03 1940-06-25 Woodall Duckham 1920 Ltd Device for viewing the interiors of heated enclosures
JPS61114085A (ja) 1984-11-09 1986-05-31 品川白煉瓦株式会社 炉内観察装置
JPS63263390A (ja) * 1987-04-21 1988-10-31 黒崎窯業株式会社 炉内観察装置
JPH03105196A (ja) * 1989-09-18 1991-05-01 Kawasaki Steel Corp コークス炉炭化室の内壁観察装置
JP3282770B2 (ja) 1994-09-05 2002-05-20 新日本製鐵株式会社 コークス炉隔壁の損傷部測定方法
WO1997038278A1 (en) * 1996-04-04 1997-10-16 Nippon Steel Corporation Apparatus for monitoring wall surface
JP3590509B2 (ja) * 1997-10-03 2004-11-17 新日本製鐵株式会社 コークス炉炭化室の内壁観察方法及び装置
EP1167919B1 (de) * 1999-03-16 2005-10-12 Nippon Steel Corporation Wandflächenüberwachung mit y Bewegung
JP2001003058A (ja) * 1999-06-16 2001-01-09 Sumitomo Metal Ind Ltd コークス炉炭化室の壁面検査方法及び壁面検査装置
JP2001011465A (ja) * 1999-06-30 2001-01-16 Sumitomo Metal Ind Ltd コークス炉炭化室の内壁観測装置
JP3965032B2 (ja) * 2000-11-14 2007-08-22 新日本製鐵株式会社 コークス炉炭化室炉幅測定装置

Also Published As

Publication number Publication date
EP1473350A4 (de) 2010-10-06
AU2003201914A1 (en) 2003-09-02
KR100615106B1 (ko) 2006-08-25
CN1496397A (zh) 2004-05-12
BR0302581A (pt) 2004-02-25
AU2003201914B2 (en) 2004-10-28
CN1290969C (zh) 2006-12-20
KR20030080249A (ko) 2003-10-11
EP1473350A1 (de) 2004-11-03
WO2003066775A1 (en) 2003-08-14
BR0302581B1 (pt) 2013-07-23

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