EP1269080B1 - Thermoelementanordnung - Google Patents

Thermoelementanordnung Download PDF

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Publication number
EP1269080B1
EP1269080B1 EP01919588A EP01919588A EP1269080B1 EP 1269080 B1 EP1269080 B1 EP 1269080B1 EP 01919588 A EP01919588 A EP 01919588A EP 01919588 A EP01919588 A EP 01919588A EP 1269080 B1 EP1269080 B1 EP 1269080B1
Authority
EP
European Patent Office
Prior art keywords
air
thermocouple
duct
gas
bulb
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
EP01919588A
Other languages
English (en)
French (fr)
Other versions
EP1269080A1 (de
Inventor
Joseph Sirand
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.)
Centre D'etude Et De Realisationsd'equipement Et D
Original Assignee
CENTRE D'ETUDE ET DE REALISATIONSD'EQUIPEMENT ET DE MATERIEL
CT D ETUDE ET DE REALISATIONSD
Centre dEtude et de Realisations dEquipment et de Materiel CEREM
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 FR0004002A external-priority patent/FR2807144B1/fr
Application filed by CENTRE D'ETUDE ET DE REALISATIONSD'EQUIPEMENT ET DE MATERIEL, CT D ETUDE ET DE REALISATIONSD, Centre dEtude et de Realisations dEquipment et de Materiel CEREM filed Critical CENTRE D'ETUDE ET DE REALISATIONSD'EQUIPEMENT ET DE MATERIEL
Publication of EP1269080A1 publication Critical patent/EP1269080A1/de
Application granted granted Critical
Publication of EP1269080B1 publication Critical patent/EP1269080B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F23N5/10—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/725—Protection against flame failure by using flame detection devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2208/00—Control devices associated with burners
    • F23D2208/10—Sensing devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2209/00—Safety arrangements
    • F23D2209/10—Flame flashback
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F23N2225/14—Ambient temperature around burners

Definitions

  • thermocouple At solenoid level of the safety valve coil. an electromagnetic field sufficient to maintain in the attracted position, against the electromagnet of said coil a movable core carrying the opening-closing valve of the safety valve. If the tip of thermocouple probe cools when heat from the burner stops when it goes out, voluntarily or not, the difference in potential disappears, and therefore also the electromagnetic field, and the valve, recalled by a spring, returns in closed position.
  • this safety device by thermocouple is entirely satisfactory in many applications where the configuration of gas combustion devices allows to have the thermocouple of so that only the hot solder of the probe tip is exposed to heat of a flame. This is mainly the case with pilot pilot lights or combustion torches not confined in a temperature raising enclosure.
  • thermocouple in which the conductors of a thermocouple are arranged inside the conduit supply so that they are both sheltered from the heat of the burner and ventilated by the fresh feed mixture flow.
  • the burner according to this document is devoid of hot security.
  • the invention consists of a device for arranging a thermocouple from the inside of the air-gas pipe of a gas burner ensuring both cold safety and hot safety functions, said thermocouple comprising a external conductor ending in a probe tip in a sheath bulb subject to a socket, characterized in that the downstream part of the external conductor of the thermocouple, probe tip side, penetrates inside the mixture inlet pipe air-gas, in that the probe tip at the end of the bulb abuts on the internal surface of the contact area of the perforated wall of a diffusion chamber, and in that the arrangement device comprises a plate fixed transversely to the section of the outlet of the air-gas pipe.
  • this temperature inversion is precisely the consequence from a fire socket to the injector, for an internal thermocouple.
  • the air-gas mixture igniting in the duct and no longer in the combustion the socket containing the cold junction becomes hotter than the assembly bulb and probe tip containing the hot solder.
  • the cut-off electric interrupts the ignition.
  • the brevity of this abnormal event does not affect enough the external conductor to seriously damage it and experience shows that there should be around ten successive accidents involving the ignition of the injector, and so that nine maintenance operations of a device were neglected, to have to replace the thermocouple.
  • FIG. 3 represents in longitudinal section a third exemplary mode of realization of a thermocouple arrangement according to the invention, in a burner comprising a flat grid called "flame hook" at the outlet of the tube.
  • FIG. 4 shows in longitudinal section a fourth example of a mode of realization of a thermocouple arrangement according to the invention, in a duct burner angled air-gas inlet.
  • FIG. 2 shows how the guide of introduction and positioning of the thermocouple by a sheath adjacent 18 can be secured as rigorously, thanks to the "channel" effect of inside the tube, immediately upstream of its outlet in the chamber diffusion.
  • the device and the means of exposed arrangements allow the use of a conventional thermocouple, by installing of its downstream part, probe tip side, inside the inlet pipe to the burner of the air-gas mixture. Its upstream part, meanwhile, opens to the outside, either at the end air-gas inlet of the bent venturi tube, either by an adjacent sheath joining said tube, whether straight or angled, upstream of its outlet inside the chamber diffusion.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Combustion (AREA)

Claims (6)

  1. Anordnungsvorrichtung für ein Thermoelement (1) durch das Innere einer Luft-Gas-Leitung (2) eines Gasbrenners, welche gleichzeitig die Funktionen der Kalt-Sicherheit sowie der Heiß-Sicherheit sicherstellt, wobei das Thermoelement einen externen Leiter aufweist, der mit einer Sondenspitze (3) in einer Zwiebel (4) endet, die eine an einem Anschlussstück (14) befestigte Hülse bildet,
    dadurch gekennzeichnet, dass der untere Teil des externen Leiters des Thermoelementes, auf Seiten der Sondenspitze (3), ausgebildet ist, ins Innere der Zuleitung (2) für das Luft-Gas-Gemischs einzudringen, und dadurch, dass die Sondenspitze (3) am Ende der Zwiebel (4) ausgebildet ist, auf einem Lager auf der inneren Oberfläche der Kontaktzone (13) der durchbrochenen Wand einer Diffusionskammer (5, 19) aufzuliegen, und dadurch, dass die Anordnungsvorrichtung eine Platte (11) einschließt, die quer zum Querschnitt des Auslasses (7) der Luft-Gas-Leitung (2) befestigt ist, wobei die Platte eine Oberfläche mit geeigneter Dimension aufweist, um eine Schirmfunktion zur lokalen Verzögerung des Luft-Gas-Flusses im Bereich der Kontaktzone (13) mit der Innenfläche der Diffusionskammer (5, 19) zu erfüllen, wobei die Basis des Anschlussstücks (14) des Trägers der Zwiebel (4) gleichermaßen auf das Lager in der Öffnung (12) der Führungs- und Positionierungsplatte (11) gestützt ist, und wobei die Platte (11) entweder am Auslass der Luft-Gas-Leitung (2) oder an der Basis der Diffusionskammer auf Seiten des Leitungsauslasses (7) befestigt ist.
  2. Vorrichtung gemäss Anspruch 1, dadurch gekennzeichnet, dass das Anschlussstück (14) des Zwiebelträgers mit einem Vorsprung (21) ausgestattet ist, dessen Profil die Neigung und die a-däquate Einstellung der Sondenspitze (3) gegenüber der Kontaktzone (13) der inneren Wandfläche der Diffusionskammer (5) bestimmt.
  3. Vorrichtung gemäss den Ansprüchen 1 oder 2, dadurch gekennzeichnet, dass, wenn der Brennerkörper um eine vertikale Achse herum angeordnet ist, mit einer auf der Auslassseite (7) im Wesentlichen vertikalen Luft-Gas-Leitung (2), der untere Teil des Thermoelementes, auf Seiten der Sondenspitze (3), ausgebildet ist, oberhalb des Auslasses in das Innere der Luft-Gas-Leitung (2) durch eine angrenzende, mit der Leitung (2) vereinigte Führungshülse (18) einzudringen, wobei der externe Leiter des Thermoelements nun auf der Höhe seiner Vorsprungsmarkierung (22) am freien Ende der angrenzenden Hülse durch ein Blockierungs- und Verschfusselement (23) fest verbunden ist.
  4. Vorrichtung gemäss den Ansprüchen 1 oder 2, dadurch gekennzeichnet, dass, wenn der Brennerkörper eine gebogene Luft-Gas-Leitung aufweist, der untere Teil des Thermoelements, auf Seiten der Sondenspitze (3), ausgebildet ist, durch das obere Ende des Venturi-Rohrs (2) auf Seiten des Luft-Gas-Gemisch-Eintritts ins Innere der Luft-Gas-Leitung (2) einzudringen, wobei der externe Leiter (16) des Thermoelements (1) nun auf der Höhe seiner Vorsprungsmarkierung (15) durch ein Blockierungsmittel (17) fest verbunden ist.
  5. Vorrichtung gemäss den Ansprüchen 1 oder 2, dadurch gekennzeichnet, dass, wenn die Geräte eine gebogene Luft-Gas-Leitung aufweisen, der untere Teil des Thermoelements, auf Seiten der Sondenspitze, ausgebildet ist, ins Innere der Luft-Gas-Leitung einzudringen, entweder durch das Ende dieser Leitung auf Seiten des Luft-Gas-Eintritts oder durch eine angrenzende, mit der Leitung vereinigte Hülse, wobei in jedem Fall der obere Teil des externen Leiters des Thermoelements an seinem Ende eine Verbindung zu einem Sicherheitsventil (8) aufweist, welches sich außerhalb der Leitung auf Seiten des Luft-Gas-Eintritts befindet.
  6. Vorrichtung gemäss Anspruch 1, dadurch gekennzeichnet, dass, wenn die Brenner keine Diffusionskammer, sondern nur und im besten Fall ein "Flammhalter"-Gitter aufweisen, eine Mini-Diffusionskammer (19) und eine Führungs- und Positionierungsplatte (11) auf Höhe des Auslasses (7) der Leitung (2) des Luft-Gas-Gemisches am Einlass der Verbrennungskammer (6) integriert sind.
EP01919588A 2000-03-30 2001-03-28 Thermoelementanordnung Expired - Lifetime EP1269080B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
FR0004002 2000-03-30
FR0004002A FR2807144B1 (fr) 2000-03-30 2000-03-30 Dispositif d'agencement d'un thermocouple classique par l'interieur du conduit air-gaz d'un bruleur a gaz pour assurer les fonctions de "securite froide" et de "securite chaude"
FR0009014 2000-07-11
FR0009014A FR2807145B1 (fr) 2000-03-30 2000-07-11 Dispositif d'agencement d'un thermocouple classique par l'interieur du conduit d'alimentation air-gaz d'un bruleur a gaz pour assurer les fonctions de "securite froide" et "securite chaude"
PCT/FR2001/000938 WO2001075367A1 (fr) 2000-03-30 2001-03-28 Dispositif d'agencement d'un thermocouple

Publications (2)

Publication Number Publication Date
EP1269080A1 EP1269080A1 (de) 2003-01-02
EP1269080B1 true EP1269080B1 (de) 2004-10-20

Family

ID=26212305

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01919588A Expired - Lifetime EP1269080B1 (de) 2000-03-30 2001-03-28 Thermoelementanordnung

Country Status (6)

Country Link
US (1) US6702458B2 (de)
EP (1) EP1269080B1 (de)
DE (1) DE60106584D1 (de)
ES (1) ES2230289T3 (de)
FR (1) FR2807145B1 (de)
WO (1) WO2001075367A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7052143B2 (en) 2003-06-02 2006-05-30 Infocus Corporation Projection device having blower and/or lamp with feedback control
FR2855868B1 (fr) 2003-06-04 2005-08-19 Ct D Etude Et De Realisation D Bruleur a gaz perfectionne comportant des moyens de commande thermoelectrique incluant un thermocouple interne
FR2924218B1 (fr) * 2007-11-23 2010-03-19 Commissariat Energie Atomique Procede de mesure de la temperature surfacique interne d'un tube et dispositif associe
US9285119B2 (en) * 2010-06-30 2016-03-15 Sabaf S.P.A. Electrical connection for connecting a thermocouple to the magnet assembly of a safety cock for gas supply
DE102012016086A1 (de) 2012-08-14 2014-02-20 Thyssenkrupp Uhde Gmbh Vorrichtung und Verfahren zur Eindüsung von Sauerstoff in eine druckaufgeladene Wirbelschichtvergasung
GB2515483A (en) * 2013-06-24 2014-12-31 Weston Aerospace Cooled Thermocouple
EP4614064A1 (de) * 2024-03-08 2025-09-10 Orkli, S. Coop. Flammenrückschlagsicherer gasbrenner

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Publication number Priority date Publication date Assignee Title
US2710055A (en) * 1951-11-13 1955-06-07 Cons Gas Electric Light And Po Thermoelectrically operated safety devices
US3680382A (en) * 1970-06-08 1972-08-01 Barber Colman Co Thermocouple protection tube for use in molten metal
GB1442745A (en) * 1972-11-17 1976-07-14 Radiation Ltd Gaseous fuel burner assemblies
GB1536520A (en) * 1977-11-18 1978-12-20 Charlesworth W Gas burners
US4510343A (en) * 1984-04-09 1985-04-09 Sivyer Robert B Thermowell apparatus
US4914948A (en) * 1984-07-05 1990-04-10 Kawasaki Steel Corp. Apparatus for monitoring burden distribution in furnace
US4697453A (en) * 1984-07-05 1987-10-06 Kawasaki Steel Corp. Apparatus for monitoring burden distribution in furnace
JP2533885B2 (ja) * 1986-08-06 1996-09-11 日立金属株式会社 耐熱管状部材の試験装置
JPS6349622A (ja) * 1986-08-18 1988-03-02 Matsushita Electric Ind Co Ltd 燃焼装置
US5005986A (en) * 1989-06-19 1991-04-09 Texaco Inc. Slag resistant thermocouple sheath
DE4014361A1 (de) * 1990-05-04 1991-11-14 Werner & Pfleiderer Temperatursensor fuer misch- und knetmaschinen
US5197805A (en) * 1991-09-30 1993-03-30 Pyromation, Inc. Temperature sensor protection tube
JP2937671B2 (ja) * 1993-01-14 1999-08-23 シャープ株式会社 液晶表示素子およびその製造方法
US5711608A (en) * 1993-10-12 1998-01-27 Finney; Philip F. Thermocouple assemblies
DE4431291B4 (de) * 1994-09-02 2004-03-25 Alstom Hochtemperatursonde
DE69837929T2 (de) * 1997-10-20 2008-02-21 Texaco Development Corp. Apparat zum messen der innentemperatur in reaktoren
US6059453A (en) * 1998-04-20 2000-05-09 Rosemount Inc. Temperature probe with sapphire thermowell

Also Published As

Publication number Publication date
EP1269080A1 (de) 2003-01-02
US6702458B2 (en) 2004-03-09
ES2230289T3 (es) 2005-05-01
WO2001075367A1 (fr) 2001-10-11
FR2807145A1 (fr) 2001-10-05
FR2807145B1 (fr) 2002-06-14
US20030029491A1 (en) 2003-02-13
DE60106584D1 (de) 2004-11-25

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