EP0845636A2 - Flammenüberwachungseinrichtung - Google Patents

Flammenüberwachungseinrichtung Download PDF

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Publication number
EP0845636A2
EP0845636A2 EP97120145A EP97120145A EP0845636A2 EP 0845636 A2 EP0845636 A2 EP 0845636A2 EP 97120145 A EP97120145 A EP 97120145A EP 97120145 A EP97120145 A EP 97120145A EP 0845636 A2 EP0845636 A2 EP 0845636A2
Authority
EP
European Patent Office
Prior art keywords
heat sink
tube
video camera
support tube
module
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.)
Ceased
Application number
EP97120145A
Other languages
English (en)
French (fr)
Other versions
EP0845636A3 (de
Inventor
Franz Dipl.-Ing. Wintrich
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.)
Orfeus Combustion Engr GmbH
Original Assignee
Orfeus Combustion Engr GmbH
BFI Automation Mindermann GmbH
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
Application filed by Orfeus Combustion Engr GmbH, BFI Automation Mindermann GmbH filed Critical Orfeus Combustion Engr GmbH
Publication of EP0845636A2 publication Critical patent/EP0845636A2/de
Publication of EP0845636A3 publication Critical patent/EP0845636A3/de
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/08—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements
    • F23N5/082—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements using electronic means
    • 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
    • F23M11/00—Safety arrangements
    • F23M11/04—Means for supervising combustion, e.g. windows
    • F23M11/045—Means for supervising combustion, e.g. windows by observing the flame
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2229/00—Flame sensors
    • F23N2229/20—Camera viewing

Definitions

  • the present invention relates to an optical flame monitoring apparatus housed in a lance.
  • Previous flame monitor designs of the prior art produced only signals representative of presence and absence of the flame. More recent designs attempt to collect as much information as possible concerning the combustion itself so as to be able to affect the combustion towards a desired optimum. Such optimum may be seen in maximum efficiency or minimum air pollution or even other parameters.
  • the present invention provides a flame monitoring apparatus capable to produce such supplemental information in real time.
  • the apparatus comprises a lance adapted to be mounted on a furnace wall such that it is directed or aimed towards a flame.
  • the lance houses a video camera and, in addition, light inlet ends of a plurality of light guide fibers. Light from the fibers may then be processed e.g. by means of a spectrum analyzer.
  • the lance illustrated in Fig. 1 comprises adjacent its end facing the flame a circular cover plate or protective disk 10 which is designed as a part subject to wear. It may easily be separated from the remainder of the lance and replaced with a fresh one.
  • Disk 10 has three light inlet openings: A central circular aperture 12 axially aligned with a tubus 14 of a video camera 16 plus two slots 18, 20. These slots extend from the circumference of the disk inwards, are parallel to one another and offset relative to aperture 12.
  • Disk 10 is shown as circumferentially welded to a heat sink member 22. However, other fastening means could be provided so as to simplify its replacement.
  • Heat sink member 22 is welded to an intermediate flange 24 which in turn is welded to a twin-walled heat sink tube comprising an inner tube 26 and an outer tube 28.
  • the heat sink tube is supplied via a first fitting 30 with cooling liquid, preferably cooling water, drained via a second fitting 32.
  • support tube 34 Within the inner tube 26 there is a support tube 34 through which the power and signal lines (not shown) of camera 16 extend. Further, support tube 34 houses the light guide fibers which are glass fibers.
  • the other end of the support tube opposite to the flame is held by means of a flange 36 screw-connected to an end flange 38 of the heat sink tube and to a lid plate 40.
  • the inner tube 26 extends beyond the end of the outer tube 28 and is provided with a fitting 42 permitting to inject pressurized air into the annular space between the inner tube 26 and the support tube 34. The air stream cleans the light transparent openings in disk 10 and contributes to cooling.
  • the annular heat sink member 22 has two diametrically opposite notches 44, 46 aligned with the slots of disk 10, i.e. each slot and an associated notch have a common central plane. On its side facing away from disk 10 the heat sink member has two recesses 48 each extending from one notch defining wall 50 to that wall which defines the other notch.
  • the heat sink member is welded to the intermediate flange 24.
  • the latter forms a crown having two pairs of openings 52, 54 which when flange 24 is connected to the heat sink member 22 open into the recesses 48 laterally with respect to one of the notches 44, 46.
  • the intermediate flange is welded with its side opposite the heat sink member to inner tube 26 and outer tube 28.
  • the annular space between inner tube and outer tube is divided by two separating walls 56 extending parallel to the axis so as to form two halves one of which communicating with the inflow fitting 30 while the other communicates with the drain fitting 32.
  • Inflowing cooling water flows through one of the halves of the annular space to the intermediate flange and through openings 52 into the recesses 48 and from there through the associated opening 54 into the other half of the annular space.
  • No sealing is provided between intermediate flange 24 and the end edges of separating walls 56 as a small leakage at this site is tolerable.
  • a light guide holder 60 is fastened, preferably clamped on the tubus 14 of video camera 16; in Fig. 2 holder 60 is shown axially offset for sake of clarity.
  • Holder 60 comprises clamp body 62 and two light guide carriers 62, 64 mounted thereon e.g. by means of screws.
  • Each light guide carrier is L-shaped and provided with throughbores 68 each receiving a light guide, for example a glass fiber which is held preferably by clamp means, not shown.
  • the light inlet ends of the light guides are disposed such that their axes extend in the central plane of notches 44, 46 and the axes are directed such that the light guides cover a large angle of preferably 90° but at least 75°. If each light guide has an aperture angle of, say, 20° five ore four light guides, respectively, will be necessary.
  • Fig. 4 illustrates such a light guide carrier in partial section view.
  • Fig. 3 shows the video camera 16 and its tubus 14 and socket 70, the latter being held in a camera mount 72.
  • the latter is tripod shaped, the legs thereof being in heat-conducting abutment on the inner tube 26 of the heat sink tube.
  • the light guides extend through the interstices between the legs.
  • Each leg of the mount is connected, by means of a bolt 74, to support tripod 76 which has in its center a through-hole provided with nut screw threads 78 for connecting it to the end of the support tube.
  • the support tripod 76 too, is in heat conducting abutment with inner tube 26 of the heat sink tube.
  • the light guides extend from their carriers into the support tube. At its end facing away from the flame the support tube has a branch 80 through which the light guides extend e.g. to spectroscopes while the camera cable extends through the support tube itself.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Studio Devices (AREA)
  • Control Of Combustion (AREA)
EP97120145A 1996-11-28 1997-11-18 Flammenüberwachungseinrichtung Ceased EP0845636A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19649264A DE19649264A1 (de) 1996-11-28 1996-11-28 Flammenbeobachtungsgerät
DE19649264 1996-11-28

Publications (2)

Publication Number Publication Date
EP0845636A2 true EP0845636A2 (de) 1998-06-03
EP0845636A3 EP0845636A3 (de) 1999-07-07

Family

ID=7812987

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97120145A Ceased EP0845636A3 (de) 1996-11-28 1997-11-18 Flammenüberwachungseinrichtung

Country Status (4)

Country Link
EP (1) EP0845636A3 (de)
CN (1) CN1186195A (de)
CA (1) CA2221328A1 (de)
DE (1) DE19649264A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2378239A (en) * 2001-05-14 2003-02-05 Pia Procede Ind Automatise Inc Detecting the presence of a burner flame
EP1621813A1 (de) * 2004-07-27 2006-02-01 Powitec Intelligent Technologies GmbH Beobachtungsvorrichtung mit Freistosseinheit
WO2008034266A1 (en) * 2006-09-19 2008-03-27 Abb Research Ltd Flame detector for monitoring a flame during a combustion process
CN101839652B (zh) * 2009-03-17 2011-12-28 中国钢铁股份有限公司 用于工作炉的双重监视装置
JP2015169365A (ja) * 2014-03-06 2015-09-28 日本電気硝子株式会社 炉内監視装置

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1156149C (zh) 2002-06-25 2004-06-30 北京科技大学 一种插入式炉窑摄象仪
JP5661797B2 (ja) 2009-12-30 2015-01-28 チャンチョン エンジニアリング カンパニー リミティド 火炎検出装置
CN103343979A (zh) * 2013-06-25 2013-10-09 合肥金星机电科技发展有限公司 高温探头冷却装置
CN103982909A (zh) * 2014-05-23 2014-08-13 新兴铸管股份有限公司 加热炉内火焰监控装置
CN104406190A (zh) * 2014-11-21 2015-03-11 张家港格林沙洲锅炉有限公司 用于炉膛观火口上的观察装置
CN109540288B (zh) * 2018-12-04 2024-04-09 北京建筑材料科学研究总院有限公司 一种回转窑火焰观测装置
CN109654529B (zh) * 2018-12-26 2020-04-21 国网河北省电力有限公司电力科学研究院 炉膛燃烧观测仪
CN109905673A (zh) * 2019-03-08 2019-06-18 江苏能建机电实业集团有限公司 高温火焰监视探头的冷却装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2150269B (en) * 1983-11-25 1986-10-15 Tolltreck Limited Metallurgical lance with flame detector
JPS60263013A (ja) * 1984-06-07 1985-12-26 Babcock Hitachi Kk 火炎検出器
JPS61218737A (ja) * 1985-03-23 1986-09-29 Kawasaki Heavy Ind Ltd 内燃機関の燃焼撮影装置
JPH0650177B2 (ja) * 1986-04-09 1994-06-29 株式会社日立製作所 マルチバ−ナ燃焼状態監視方法
DD261290A3 (de) * 1986-11-11 1988-10-26 Freiberg Brennstoffinst Kombinierte zuend- und ueberwachungseinrichtung fuer brenner
DE9111701U1 (de) * 1991-09-19 1991-12-05 Marai Mechanik und Elektronik GmbH, 3015 Wennigsen Gehäuse einer Feuerraumsonde
DE4332044A1 (de) * 1993-09-21 1995-03-23 Klaus Hallmann Feuerraumsondenkamera mit Technoskop
DE19615141A1 (de) * 1996-04-17 1997-10-23 Bfi Automation Gmbh Verfahren und Einrichtung zur Steuerung eines Verbrennungsprozesses in einem Kessel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2378239A (en) * 2001-05-14 2003-02-05 Pia Procede Ind Automatise Inc Detecting the presence of a burner flame
GB2378239B (en) * 2001-05-14 2005-03-16 Pia Procede Ind Automatise Inc Apparatus and method for detecting the presence of a burner flame
EP1621813A1 (de) * 2004-07-27 2006-02-01 Powitec Intelligent Technologies GmbH Beobachtungsvorrichtung mit Freistosseinheit
US7520744B2 (en) 2004-07-27 2009-04-21 Powtec Intelligent Technologies Gmbh Monitoring device with scraper unit
WO2008034266A1 (en) * 2006-09-19 2008-03-27 Abb Research Ltd Flame detector for monitoring a flame during a combustion process
CN101512227B (zh) * 2006-09-19 2011-11-16 Abb研究有限公司 用于在燃烧过程中监视火焰的火焰检测器
US8274560B2 (en) 2006-09-19 2012-09-25 Abb Research Ltd Flame detector for monitoring a flame during a combustion process
CN101839652B (zh) * 2009-03-17 2011-12-28 中国钢铁股份有限公司 用于工作炉的双重监视装置
JP2015169365A (ja) * 2014-03-06 2015-09-28 日本電気硝子株式会社 炉内監視装置

Also Published As

Publication number Publication date
DE19649264A1 (de) 1998-06-10
CA2221328A1 (en) 1998-05-28
CN1186195A (zh) 1998-07-01
EP0845636A3 (de) 1999-07-07

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