[go: up one dir, main page]

WO2015158489A1 - Brûleur à pale rotative - Google Patents

Brûleur à pale rotative Download PDF

Info

Publication number
WO2015158489A1
WO2015158489A1 PCT/EP2015/055812 EP2015055812W WO2015158489A1 WO 2015158489 A1 WO2015158489 A1 WO 2015158489A1 EP 2015055812 W EP2015055812 W EP 2015055812W WO 2015158489 A1 WO2015158489 A1 WO 2015158489A1
Authority
WO
WIPO (PCT)
Prior art keywords
trailing edge
burner
swirl
fuel
hub
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
PCT/EP2015/055812
Other languages
German (de)
English (en)
Inventor
Andreas Böttcher
Boris Ferdinand Kock
Tobias Krieger
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens 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
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of WO2015158489A1 publication Critical patent/WO2015158489A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/02—Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration
    • F23R3/04—Air inlet arrangements
    • F23R3/10—Air inlet arrangements for primary air
    • F23R3/12—Air inlet arrangements for primary air inducing a vortex
    • F23R3/14—Air inlet arrangements for primary air inducing a vortex by using swirl vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/36—Details
    • F23D11/38—Nozzles; Cleaning devices therefor
    • F23D11/383—Nozzles; Cleaning devices therefor with swirl means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
    • F23R3/286—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply having fuel-air premixing devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
    • F23R3/34—Feeding into different combustion zones
    • F23R3/343—Pilot flames, i.e. fuel nozzles or injectors using only a very small proportion of the total fuel to insure continuous combustion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/07001—Air swirling vanes incorporating fuel injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/14—Special features of gas burners
    • F23D2900/14021—Premixing burners with swirling or vortices creating means for fuel or air

Definitions

  • Burner with swirl vane The invention relates to a burner and relates to the improved mixture of fuel and air.
  • the mixture of fuel and air is of central importance in the combustion process. Significantly, the quality of the mixture determines the nitrogen oxide (NO x ) and carbon monoxide (CO) emissions, the thermoacoustic properties of the flame and the flame shape and shape.
  • NO x nitrogen oxide
  • CO carbon monoxide
  • thermoacoustic behavior of the burner acoustic stimuli. Depending on their amplitude and frequency as well as the natural frequency of the combustion chamber structure, these vibrations are either damped or amplified. Fall the frequencies of the thermoacoustic
  • Vibrations coincide with the natural frequencies of the structure in phase, resulting in high mechanical vibration amplitudes, which can have a critical effect on the life of the components.
  • the fuel is usually added via injection holes in the swirl generator blades of the burner where it is mixed with the warm compressor air.
  • the gas jet penetrates at different depths into the surrounding compressor air. The resulting "penetration ⁇ deep" has a direct influence on the radial profile of the
  • the bore diameter is designed so that a certain penetration depth ⁇ A and a specific mixture profile be achieved. It is common for all Eindüsungsbohrungen to use the same diameter. This approach is due to the fact that different hole diameters on the changing pressure loss would also have a differing ⁇ che division of the fuel gas to the various drilling result.
  • the quality of the mixture depends essentially on the depth of penetration of the gas jet into the surrounding air.
  • the object of the invention is to provide a burner in which the quality of the mixture is further improved.
  • the invention solves this problem by providing that in a burner with a substantially annular in cross-section, in the operation of air and fuel perfused Heilzubow- and Vormischkanal, which is formed by an outer shell and a hub and in which more
  • Swirl vanes are arranged, which extend from the hub to the outer shell in the radial direction and have a deflection surface with a trailing edge, the trailing edge is interrupted several times, the trailing edge of a
  • Swirl blade is designed stepped in the flow direction and the grading is carried out as a result of rectangular or triangular recesses.
  • a grading is easy to produce, for example, by punching and can be carried out, for example, as a result of rectangular or triangular recesses.
  • the multiple interruption of the trailing edge leads to ver ⁇ like small-scale eddies.
  • These vortices can be used to further improve the mixing, whereby the axial vortex formation between the outflow vortices leads to a changed mixture and a change in the penetration depth due to entrainment effects in the axial vane direction.
  • the trailing edge of a swirl blade has cracks in terms of a Outflow angle on.
  • a transition of the deflection surface to the trailing edge is smooth, so that a first derivative of a surface curvature is continuous. As a result, unwanted vortex formation is avoided before the trailing edge.
  • Drum shovels on fuel openings wherein a number of interruptions of the trailing edge exceeds a number of fuel ⁇ openings. Since small-scale turbulences are to be generated, it is expedient if measures for interrupting the outflow edge are provided only in the downstream third of the swirl blades. With the multiple interrupted trailing edge of the swirl generator blades improved or adjustable Mi ⁇ tion of fuel and air can be achieved. In particular, the mixing field in the wake of the blade can be influenced with such a trailing edge. This leads to lower emissions and improved stamen stability.
  • FIG. 1 shows a burner
  • Figure 2 is a swirl blade according to the prior art
  • Figure 3 is a swirl blade with punched outflow edge according to the invention
  • Figure 4 shows a swirl blade with alternately up or down bent blade ends.
  • FIG. 1 shows schematically and exemplarily a soan- provides a burner 1 with an annular cross section in Wesentli ⁇ surfaces, through which flow in the operation of air and fuel air supply and premixing channel 2, which is formed by an outer shell 3 and a hub 4 and in a plurality of swirl blades 5, 6, 16 are arranged, which extend from the hub 4 to the outer casing 3 in the radial direction.
  • FIG. 2 An example of a swirl blade 16 according to the prior Tech ⁇ technology is shown in FIG. 2
  • the swirl blade 16 is designed as a hollow blade and has deflection surfaces 7 with a trailing edge 8, and fuel openings 13, which are supplied via fuel channels 17.
  • the outflow edge 8 of the swirl blade 16 is substantially straight or slightly curved .
  • FIG. 3 shows a swirl blade 6 in which the outflow edge 8 is stepped in the direction of flow, as a result of rectangular recesses 12.
  • FIG. 4 shows a swirl blade 5, which has cracks with respect to an outflow angle 9, wherein the outflow edge 8 of the blade 5 is bent alternately in opposite transverse directions 10.
  • a transition 11 of the deflection surface 7 to the outflow edge 8 is smooth, so that a first derivative of a surface curvature is continuous.
  • the swirl vanes 5, 6 of FIGS. 3 and 4 have fuel openings 13.
  • the number of interruptions of the trailing edge 8 exceeds the number of Brennstofföffnun conditions 13.
  • the comparatively frequent interruption of the trailing edge 8 a small-scale turbulence is generated, which improves the mixture of fuel and air on the twist addition.

Landscapes

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

Abstract

L'invention concerne un brûleur qui comprend un conduit d'alimentation en air et de pré-mélange, de forme sensiblement annulaire en coupe transversale, qui est traversé en fonctionnement par de l'air et du combustible, qui est formé par une enveloppe extérieure et un moyeu, et dans lequel sont disposées une pluralité de pales rotatives(6) qui s'étendent du moyeu jusqu'à l'enveloppe extérieure dans la direction radiale et qui possèdent une surface déflectrice (7) pourvue d'un bord de fuite (8), le bord de fuite (8) étant interrompu plusieurs fois, le bord de fuite (8) d'une pale rotative (6) étant réalisée de façon étagée dans la direction d'écoulement et l'étagement étant réalisé comme une succession d'évidements rectangulaires ou triangulaires (12).
PCT/EP2015/055812 2014-04-17 2015-03-19 Brûleur à pale rotative Ceased WO2015158489A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014207428.2 2014-04-17
DE102014207428.2A DE102014207428A1 (de) 2014-04-17 2014-04-17 Brenner mit Drallschaufel

Publications (1)

Publication Number Publication Date
WO2015158489A1 true WO2015158489A1 (fr) 2015-10-22

Family

ID=52781032

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/055812 Ceased WO2015158489A1 (fr) 2014-04-17 2015-03-19 Brûleur à pale rotative

Country Status (2)

Country Link
DE (1) DE102014207428A1 (fr)
WO (1) WO2015158489A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111121012A (zh) * 2020-01-14 2020-05-08 上海迎韦热能设备有限公司 一种低氮燃油燃烧器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102023203273A1 (de) 2023-04-11 2024-10-17 Siemens Energy Global GmbH & Co. KG Verbessertes Brennerteil und Brenner mit einem solchen Brennerteil

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4406399A1 (de) * 1993-04-08 1994-10-13 Abb Management Ag Wärmeerzeuger
JP2006336997A (ja) * 2005-06-06 2006-12-14 Mitsubishi Heavy Ind Ltd ガスタービンの燃焼バーナー
EP2645000A2 (fr) * 2012-03-30 2013-10-02 General Electric Company Générateur de tourbillonnement pour chambres de combustion

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1645807A1 (fr) * 2004-10-11 2006-04-12 Siemens Aktiengesellschaft Brûleur pour gas à faible capacité calorifique et méthode d'utilisation d'un tel brûleur

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4406399A1 (de) * 1993-04-08 1994-10-13 Abb Management Ag Wärmeerzeuger
JP2006336997A (ja) * 2005-06-06 2006-12-14 Mitsubishi Heavy Ind Ltd ガスタービンの燃焼バーナー
EP2645000A2 (fr) * 2012-03-30 2013-10-02 General Electric Company Générateur de tourbillonnement pour chambres de combustion

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111121012A (zh) * 2020-01-14 2020-05-08 上海迎韦热能设备有限公司 一种低氮燃油燃烧器
CN111121012B (zh) * 2020-01-14 2025-01-07 上海迎韦热能设备有限公司 一种低氮燃油燃烧器

Also Published As

Publication number Publication date
DE102014207428A1 (de) 2015-10-22

Similar Documents

Publication Publication Date Title
EP2588805B1 (fr) Brûleur
DE102011054174B4 (de) Turbomaschine mit einem Mischrohrelement mit einem Wirbelgenerator
EP2156095B1 (fr) Stabilisation sans tourbillonner de la flamme d'un brûleur à prémélange
DE102007004394B4 (de) Brenner zum Verbrennen eines Vorgemischs für eine Gasturbine
DE112006000427B4 (de) Brenner zum Verbrennen eines Vorgemischs für eine Gasturbine
DE112014001594B4 (de) Brennkammer und Gasturbine
DE69917655T2 (de) System zur dämpfung akustischer schwingungen in einer brennkammer
EP1048898B1 (fr) Brûleur
DE112016003028B4 (de) Brennstoffdüsenanordnung
DE3915447A1 (de) Gasbrenner
DE102015102904A1 (de) System und Verfahren zur Steuerung der Verbrennungsdynamik in einem Brennersystem
EP3488148B1 (fr) Dispositif de mélange pour gaz-air
WO2012016748A2 (fr) Chambre de combustion de turbine à gaz
EP2161502A1 (fr) Brûleur à prémélange pour un combustible pauvre et riche
WO2012025427A1 (fr) Ensemble brûleur
EP2864706A1 (fr) Amélioration locale du mélange d'air et de combustible dans des brûleurs pourvus de générateurs de tourbillon comprenant des extrémités à aube entrecroisées dans la zone extérieure
WO2015158489A1 (fr) Brûleur à pale rotative
WO2015062962A1 (fr) Moyeu de brûleurs de turbine à gaz pourvu d'un brûleur pilote
CH709640A2 (de) Systeme und Verfahren zur Kohärenzreduktion in einem Verbrennungssystem mit erster und zweiter Brennkammer einer Gasturbine.
EP2151630B1 (fr) Dispositif de tourbillonnement
EP2310741B1 (fr) Insert d'une buse à combustible
EP2407715B1 (fr) Brûleur
EP2588806B1 (fr) Module de brûleur
EP3102878B1 (fr) Brûleur à gaz, table de cuisson et foyer
EP2191200A1 (fr) Cellule de prémélange pour un brûleur de turbine à gaz

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15712323

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15712323

Country of ref document: EP

Kind code of ref document: A1