EP0276398B1 - Brûleur - Google Patents

Brûleur Download PDF

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Publication number
EP0276398B1
EP0276398B1 EP87117120A EP87117120A EP0276398B1 EP 0276398 B1 EP0276398 B1 EP 0276398B1 EP 87117120 A EP87117120 A EP 87117120A EP 87117120 A EP87117120 A EP 87117120A EP 0276398 B1 EP0276398 B1 EP 0276398B1
Authority
EP
European Patent Office
Prior art keywords
passage opening
fuel
closure body
air
tube
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
EP87117120A
Other languages
German (de)
English (en)
Other versions
EP0276398A2 (fr
EP0276398A3 (en
Inventor
Friedhelm Salzmann
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.)
Deutsche Babcock Werke AG
Original Assignee
Deutsche Babcock Werke AG
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 Deutsche Babcock Werke AG filed Critical Deutsche Babcock Werke AG
Priority to AT87117120T priority Critical patent/ATE57430T1/de
Publication of EP0276398A2 publication Critical patent/EP0276398A2/fr
Publication of EP0276398A3 publication Critical patent/EP0276398A3/de
Application granted granted Critical
Publication of EP0276398B1 publication Critical patent/EP0276398B1/fr
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
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/74—Preventing flame lift-off
    • 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
    • F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
    • F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
    • F23D14/24—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other at least one of the fluids being submitted to a swirling motion

Definitions

  • the invention relates to a burner with the features of the preamble of the claim.
  • a burner of the generic type is known from DE-PS 35 26 482 and is used for the combustion of liquid fuel.
  • a high-speed air flow is generated in the gap, which atomizes the fuel entering the gap into very fine drops and mixes it homogeneously with the combustion air.
  • the burner can therefore be used to heat boilers for low-temperature heating.
  • the invention has for its object to design the generic burner such that it is suitable for the combustion of gaseous fuels.
  • the drawing shows a longitudinal section through a burner according to the invention.
  • the burner contains a guide tube 1, which is provided with a connection 2 for the supply of combustion air.
  • the guide tube 1 is closed at the rear end by a cover 3 and at the front end by a closure body 4 which has a passage opening 5.
  • the closure body 4 contains a flange to which the cooled flame chamber 6 of a heating boiler connects.
  • a guide body 7 is arranged within the guide tube 1.
  • the guide body 7 has a flat bottom surface 8, which is at a short distance from the end face 9 of the end body 4, so that a plane-parallel gap 10 is formed, which runs perpendicular to the axis of the guide tube 1.
  • the guide body 7 is provided with swirl vanes 11 on the outside.
  • the swirl blades 11 force a swirl on the incoming combustion air, the swirled air being accelerated within the narrow gap 10. This creates a rapidly rotating air vortex within the passage opening 5 of the end body 4, which vortex is closed against the direction of flow of air by the guide body 7. In the center of rotation of this vortex there is a static pressure which is lower than the pressure of the incoming air of 100 to 120 mbar required to generate the vortex.
  • a fuel line 12 for gaseous fuel is guided through the guide tube 1 and the guide body 7.
  • a nut 13 is provided for setting the optimum penetration depth of the fuel line 12 into the burner.
  • the fuel line 12 has lateral outlet openings 14.
  • the fuel line 12 is pushed so far into the passage opening 5 of the closing body 4 that the lateral outlet openings 14 lie within the center of rotation of the air vortex formed in the outlet opening 5.
  • the static pressure prevailing at this point is lower than the available gas pressure of 10 to 15 mbar, with which the gaseous fuel is supplied, so that the gaseous fuel can enter the air vortex.
  • the passage opening 5 of the closure body 4 has a first section 15 and a second section 16.
  • the first section 15 is dimensioned such that a flow rate of the air-gas mixture is established which corresponds approximately to three times the ignition rate.
  • the first section 15 widens conically to the extent that the volume of the mixture increases due to the supply of the gaseous fuel. In the illustrated case, the angle that the side wall of the first section 15 forms with the longitudinal axis of the guide tube 1 is approximately 10 degrees.
  • the second section 16 of the passage opening 5 widens bell-shaped, the largest diameter of this second section 16 being dimensioned such that the flow velocity of the Air-gas mixture drops to ignition speed.
  • a disk-shaped flame holder 17 is provided, which is attached to the fuel line 12 via a rod 18.
  • a high-voltage ignition 19 and an ionization probe 20 protrude into the flame chamber 6.

Claims (1)

  1. Brûleur avec une conduite de combustible (12) centrale et un tube d'amenée (1) pour l'air de combustion, qui est fermé à une extrémité par un corps de fermeture (7) présentant un orifice de passage (5) central, un corps de rotation (7) servant à produire un tourbillon d'air à rotation rapide étant disposé dans le tube de guidage (1), le corps de rotation (7) formant avec le tube de fermeture (4) un interstice radial (10) s'étendant perpendiculairement à l'axe du tube de guidage (1), l'orifice de passage (5) du corps de fermeture (4) présentant une première partie (15) qui est dimensionnée de façon que la vitesse d'écoulement corresponde au moins au triple de la vitesse d'allumage et s'y raccordant une deuxième partie (16) s'élargissant, dont le plus grand diamètre est dimensionné de façon que la vitesse d'écoulement à l'extrémité de cette partie (16) soit inférieure à la vitesse d'allumage, caractérisé en ce que la conduite de combustible (12) qui amène un carburant gazeux présente des orifices de sortie (14) latéraux, disposés dans la zone de dépression du tourbillon d'air qui s'établit dans la première partie (15) de l'orifice de passage (5), et que, dans le sens du flux de combustible, la première partie (15) s'élargit en forme de cône et la deuxième partie (16), s'y raccordant, s'élargit en forme de cloche, un accrocheur de flamme (17) étant disposé derrière la deuxième partie.
EP87117120A 1987-01-28 1987-11-20 Brûleur Expired - Lifetime EP0276398B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87117120T ATE57430T1 (de) 1987-01-28 1987-11-20 Brenner.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3702415 1987-01-28
DE3702415A DE3702415C1 (de) 1987-01-28 1987-01-28 Brenner

Publications (3)

Publication Number Publication Date
EP0276398A2 EP0276398A2 (fr) 1988-08-03
EP0276398A3 EP0276398A3 (en) 1989-04-12
EP0276398B1 true EP0276398B1 (fr) 1990-10-10

Family

ID=6319656

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87117120A Expired - Lifetime EP0276398B1 (fr) 1987-01-28 1987-11-20 Brûleur

Country Status (3)

Country Link
EP (1) EP0276398B1 (fr)
AT (1) ATE57430T1 (fr)
DE (2) DE3702415C1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1017744B (zh) * 1988-12-26 1992-08-05 株式会社日立制作所 低氮氧化物锅炉
EP0486169B1 (fr) * 1990-11-16 1998-01-21 Energy International, Inc. Brûleur à faible production de NOx
FR2729743B1 (fr) * 1995-01-24 1997-04-04 Cuenod Thermotech Sa Tete de combustion, en particulier pour bruleur a air souffle, et bruleur equipe d'une telle tete
US6238206B1 (en) 1997-05-13 2001-05-29 Maxon Corporation Low-emissions industrial burner
GB2337102A (en) * 1998-05-09 1999-11-10 Europ Gas Turbines Ltd Gas-turbine engine combustor
US6729874B2 (en) * 2000-07-27 2004-05-04 John Zink Company, Llc Venturi cluster, and burners and methods employing such cluster
RU2471117C1 (ru) * 2011-08-10 2012-12-27 Александр Викторович Фролов Рекуперативная газовая горелка и способ подогрева в ней воздуха

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1551797A1 (de) * 1951-01-28 1971-12-16 Inst Gasa Akademii Nauk Uk Ssr Gasflachflammenbrenner
GB784765A (en) * 1955-07-19 1957-10-16 Ofu Ofenbau Union Gmbh An improved method of and apparatus for the rapid and uniform heating of industrial furnaces
DE3038063C2 (de) * 1980-10-08 1983-07-28 Braukmann Kessel GmbH, 6966 Seckach Ölbrenner
DE3526482C1 (de) * 1985-07-24 1986-12-18 Deutsche Babcock Werke AG, 4200 Oberhausen Brenner zum Verbrennen von fluessigem Brennstoff

Also Published As

Publication number Publication date
EP0276398A2 (fr) 1988-08-03
ATE57430T1 (de) 1990-10-15
DE3765536D1 (en) 1990-11-15
DE3702415C1 (de) 1988-04-21
EP0276398A3 (en) 1989-04-12

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