EP2864706B1 - Lokale verbesserung der mischung von luft und brennstoff in brennern mit drallerzeugern mit im aussenbereich verschränkten schaufelenden - Google Patents

Lokale verbesserung der mischung von luft und brennstoff in brennern mit drallerzeugern mit im aussenbereich verschränkten schaufelenden Download PDF

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Publication number
EP2864706B1
EP2864706B1 EP13729697.6A EP13729697A EP2864706B1 EP 2864706 B1 EP2864706 B1 EP 2864706B1 EP 13729697 A EP13729697 A EP 13729697A EP 2864706 B1 EP2864706 B1 EP 2864706B1
Authority
EP
European Patent Office
Prior art keywords
flow
fuel
burner
air
blades
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.)
Not-in-force
Application number
EP13729697.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2864706A1 (de
Inventor
Bernd Prade
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
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Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP2864706A1 publication Critical patent/EP2864706A1/de
Application granted granted Critical
Publication of EP2864706B1 publication Critical patent/EP2864706B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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

Definitions

  • the invention relates to a burner with fuel mixing swirl generators and in particular the local improvement of the mixture of air and fuel.
  • the even mixing of fuel into the combustion air is the central design task in the development of burners, which are operated in the field of so-called lean premix combustion.
  • the temperature range of lean premix combustion is particularly useful in gas turbines because of the material-related limitation of the combustion chamber outlet temperature for controlling nitrogen oxide emissions.
  • the difficulty of premix combustion, especially under pressure, is the avoidance of uncontrollable combustion phenomena / auto-ignition within the premix, which is usually associated with the destruction of the premix. As a rule of thumb, it can be assumed that the most homogeneous premix possible also results in minimal NO x emissions.
  • the object of the invention is to provide a burner of the type mentioned, which allows an improved mixture of air and fuel, in particular in radially outer regions of the premix.
  • the invention solves this problem by providing that in such a burner with a substantially annular in cross-section, in the operation of air and fuel flow through the air supply and Vormischkanal, which is formed by an outer shell and a hub and in the plurality of swirl vanes are arranged, which extend from the hub to the outer shell in the radial direction and have a deflection surface, wherein exclusively in a radial outer region of the Swirl blades at least one time and once decreases a flow angle to a main flow direction at an outflow end of the deflection in the radial direction.
  • the invention is based on the recognition that the locally present turbulence intensity represents an additional influencing parameter on the mixing of the fuel into the air.
  • An increase in the turbulence intensity has a mixing-promoting effect.
  • an outflow angle ⁇ 1 lies at a radially inward outflow end of the deflection surface between an outflow angle ⁇ 3 of a radially outer outflow end and an outflow angle ⁇ 2 of an outflow end located therebetween.
  • the turbulence is then locally increased in the form of a vortex street because of the shear.
  • the swirl blades are at least partially designed as hollow blades with outlet openings for fuel.
  • burner 1 which may optionally be used in conjunction with several similar burners, for example in the combustion chamber of a gas turbine plant comprises an inner pilot burner system 2 and the pilot burner system 2 concentrically surrounding the main burner system 3.
  • Both pilot burner system 2 and main burner system 3 can optionally with gaseous and / or liquid fuels, such as, for example, natural gas or fuel oil operated.
  • the main burner system 3 comprises a radial outer air supply and premixing duct 4, also called annular air duct, which is formed by an outer jacket 5 and a hub 6 and through which swirl vanes 7 extend a swirl blading. These swirl blades 7 have outlet openings 8 for fuel, through which fuel gas can be injected into the air flowing in through the radial air supply and premixing channel 4.
  • FIG. 2 shows a developed portion of the main burner system 3 in the plan view with the swirl blades 7 and illustrates the areas of good 9 and bad interference 10 of the fuel in air.
  • the blades 7 Radially inside, ie in the vicinity of the hub 6, the blades 7 are comparatively close to each other, so that the fuel sufficiently far into the gap can be injected between two blades 7 in order to achieve the best possible mixing.
  • FIG. 3 shows the view of the deflection surface 11 of a swirl blade 7 of a burner 1 according to the invention.
  • the swirl blade 7 extends in the burner 1 from the radially inner hub 6 (right, not shown) to the radially outer outer jacket 5 (left, not shown).
  • the swirl blade 7 in the embodiment of FIG. 3 designed as hollow blades with outlet openings 8 for fuel.
  • three regions 101, 102 and 103 are marked in the region of the outflow end 12 of the deflection surface 11, the regions 102 and 103 being attributable to the radial outer region of the blade 7.
  • FIG. 4 shows three successive cuts through the areas 101, 102 and 103 of the swirl blade 7 of the FIG. 3 Viewing from the hub 6 to the outer jacket 5. It can be seen that at a radially inner outflow end 12 of the deflection 11, ie in section through the region 101, the outflow angle ⁇ 1 to a main flow direction 13 between a discharge angle ⁇ 3 of a radially outer Outflowing 12, that is, in section through the region 103, and an outflow angle ⁇ 2 of an intervening outflow end, ie in section through the region 102, is located.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
EP13729697.6A 2012-08-06 2013-06-13 Lokale verbesserung der mischung von luft und brennstoff in brennern mit drallerzeugern mit im aussenbereich verschränkten schaufelenden Not-in-force EP2864706B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012213853 2012-08-06
PCT/EP2013/062248 WO2014023462A1 (de) 2012-08-06 2013-06-13 Lokale verbesserung der mischung von luft und brennstoff in brennern mit drallerzeugern mit im aussenbereich verschränkten schaufelenden

Publications (2)

Publication Number Publication Date
EP2864706A1 EP2864706A1 (de) 2015-04-29
EP2864706B1 true EP2864706B1 (de) 2016-11-02

Family

ID=48652056

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13729697.6A Not-in-force EP2864706B1 (de) 2012-08-06 2013-06-13 Lokale verbesserung der mischung von luft und brennstoff in brennern mit drallerzeugern mit im aussenbereich verschränkten schaufelenden

Country Status (6)

Country Link
US (1) US10012386B2 (ko)
EP (1) EP2864706B1 (ko)
KR (1) KR20150039763A (ko)
CN (1) CN104471317B (ko)
RU (1) RU2633475C2 (ko)
WO (1) WO2014023462A1 (ko)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10394454B2 (en) * 2017-01-13 2019-08-27 Arm Limited Partitioning of memory system resources or performance monitoring
RU2698621C1 (ru) * 2018-11-26 2019-08-28 Федеральное государственное образовательное учреждение высшего образования "Казанский национальный исследовательский технический университет им. А.Н. Туполева - КАИ" Топливовоздушная горелка и форсуночный модуль топливовоздушной горелки
US11187414B2 (en) 2020-03-31 2021-11-30 General Electric Company Fuel nozzle with improved swirler vane structure

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2798661A (en) * 1954-03-05 1957-07-09 Westinghouse Electric Corp Gas turbine power plant apparatus
US4830315A (en) * 1986-04-30 1989-05-16 United Technologies Corporation Airfoil-shaped body
US5197290A (en) * 1990-03-26 1993-03-30 Fuel Systems Textron Inc. Variable area combustor air swirler
CH687347A5 (de) * 1993-04-08 1996-11-15 Abb Management Ag Wärmeerzeuger.
JPH07332621A (ja) * 1994-06-13 1995-12-22 Hitachi Ltd ガスタービン燃焼器用旋回バーナ
US6141967A (en) * 1998-01-09 2000-11-07 General Electric Company Air fuel mixer for gas turbine combustor
US6331100B1 (en) 1999-12-06 2001-12-18 General Electric Company Doubled bowed compressor airfoil
EP1394471A1 (de) * 2002-09-02 2004-03-03 Siemens Aktiengesellschaft Brenner
US6993916B2 (en) 2004-06-08 2006-02-07 General Electric Company Burner tube and method for mixing air and gas in a gas turbine engine
WO2006094939A1 (de) * 2005-03-09 2006-09-14 Alstom Technology Ltd Vormischbrenner zum betreiben einer brennkammer
JP4476176B2 (ja) * 2005-06-06 2010-06-09 三菱重工業株式会社 ガスタービンの予混合燃焼バーナー
JP4959524B2 (ja) 2007-11-29 2012-06-27 三菱重工業株式会社 燃焼バーナー
EP2116768B1 (en) * 2008-05-09 2016-07-27 Alstom Technology Ltd Burner
US9513009B2 (en) 2009-02-18 2016-12-06 Rolls-Royce Plc Fuel nozzle having aerodynamically shaped helical turning vanes
US8261530B2 (en) * 2009-05-01 2012-09-11 United Technologies Corporation Cambered aero-engine inlet
US20100326079A1 (en) * 2009-06-25 2010-12-30 Baifang Zuo Method and system to reduce vane swirl angle in a gas turbine engine
DE102009038848A1 (de) 2009-08-26 2011-03-03 Siemens Aktiengesellschaft Brenner, insbesondere für Gasturbinen
DE102009038845A1 (de) 2009-08-26 2011-03-03 Siemens Aktiengesellschaft Drallschaufel, Brenner und Gasturbine
EP2496884B1 (en) * 2009-11-07 2016-12-28 General Electric Technology GmbH Reheat burner injection system
EP2496880B1 (en) * 2009-11-07 2018-12-05 Ansaldo Energia Switzerland AG Reheat burner injection system
US10054313B2 (en) * 2010-07-08 2018-08-21 Siemens Energy, Inc. Air biasing system in a gas turbine combustor
RU105005U1 (ru) * 2011-02-28 2011-05-27 Открытое акционерное общество "Силовые машины-ЗТЛ, ЛМЗ, Электросила, Энергомашэкспорт" (ОАО "Силовые машины") Горелка
RU2550370C2 (ru) * 2011-05-11 2015-05-10 Альстом Текнолоджи Лтд Центробежная форсунка с выступающими частями
US8925323B2 (en) * 2012-04-30 2015-01-06 General Electric Company Fuel/air premixing system for turbine engine
EP2703721B1 (en) * 2012-08-31 2019-05-22 Ansaldo Energia IP UK Limited Premix burner

Also Published As

Publication number Publication date
RU2633475C2 (ru) 2017-10-12
CN104471317A (zh) 2015-03-25
KR20150039763A (ko) 2015-04-13
CN104471317B (zh) 2016-09-07
WO2014023462A1 (de) 2014-02-13
US20150285499A1 (en) 2015-10-08
US10012386B2 (en) 2018-07-03
RU2015107562A (ru) 2016-09-27
EP2864706A1 (de) 2015-04-29

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