EP0902237A2 - Vrille avec des aubes tordues pour chambre de combustion - Google Patents

Vrille avec des aubes tordues pour chambre de combustion Download PDF

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Publication number
EP0902237A2
EP0902237A2 EP98116591A EP98116591A EP0902237A2 EP 0902237 A2 EP0902237 A2 EP 0902237A2 EP 98116591 A EP98116591 A EP 98116591A EP 98116591 A EP98116591 A EP 98116591A EP 0902237 A2 EP0902237 A2 EP 0902237A2
Authority
EP
European Patent Office
Prior art keywords
swirler
angle
fuel nozzle
fuel
air
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.)
Granted
Application number
EP98116591A
Other languages
German (de)
English (en)
Other versions
EP0902237B1 (fr
EP0902237A3 (fr
Inventor
Shigemi c/o Takasago R & D Center Mandai
Masataka c/o Takasago R & D Center Ohta
Mitsuru c/o Takasago Machinery Works Inada
Shinji c/o Takasago Machinery Works Akamatsu
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Publication of EP0902237A2 publication Critical patent/EP0902237A2/fr
Publication of EP0902237A3 publication Critical patent/EP0902237A3/fr
Application granted granted Critical
Publication of EP0902237B1 publication Critical patent/EP0902237B1/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
    • 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

Definitions

  • the present invention relates to a swirler for forming a pre-mixture in a pre-mixed flame type low NO x combustor of gas turbine.
  • Fig. 4 is an entire constructional view of one example of a premixed flame type low NO x combustor in the prior art
  • Fig. 5 is a cross sectional view of a main fuel nozzle as part of the combustor of Fig. 4.
  • a main swirler 201 surrounding the main fuel nozzle 202 and extending to a position of the outer casing 206.
  • the main swirlers 201 in plural units and a pilot swirler 203 in a single unit at a center of the combustor, and combustion air is supplied through the plurality of main swirlers 201 and the pilot swirler 203 and fuel is supplied from the plurality of main fuel nozzles 202 and the pilot fuel nozzle 204.
  • the fuel is injected from the nozzle holes 205 bored in the wall of body of the main fuel nozzle 202 and is mixed with the air flowing on an outer periphery of the nozzle via the main swirler 201 to form a pre-mixed gas.
  • the main swirler 201 When the air flows through the main swirler 201, it is given a swirling angle by the main swirler 201 and this angle is governed by a fitting angle in which a swirler vane is fitted to a hub portion thereof relative to a center axis of the fuel nozzle.
  • Fig. 3(a) is a view showing arrangement of a swirler relative to the fuel nozzle
  • Fig. 3(b) is a development of arrangement of swirler vanes.
  • the present invention provides a three-dimensional swirler characterized in that a swirler vane fitted around a fuel nozzle is twisted from a hub side thereof to a tip side thereof so that a fitting angle of the tip side relative to a center axis of the fuel nozzle is larger than that of the hub side.
  • the swirler vane in the swirler vane fitted around the fuel nozzle, the swirler vane is twisted from the hub side to the tip side so as to change the fitting angle relative to the center axis of the fuel nozzle and said angle of the tip side is formed larger than that of the hub side.
  • said angle of the hub side is set to a smaller angle so that flame stagnation, and burning of components resulted therefrom, may be prevented from occurring
  • the swirler vane is twisted so that said angle of the tip side may be selected to an angle in which shearing flow necessary for appropriate mixing of fuel and air is obtained, thereby such a three-dimensional swirler as is able to make a favorable pre-mixing, to prevent a life deterioration due to the burning etc. and to enhance a combustion efficiency is obtained.
  • the present invention provides a three-dimensional swirler as mentioned above, characterized in that in said swirler vane, the fitting angle of the hub side relative to the center axis of the fuel nozzle is 25° and that of the tip side is 45°.
  • the fitting angle of the hub side relative to the center axis of the fuel nozzle is set to 25° in which flame stagnation and burning of components do not occur and said angle of the tip side is set to 45° in which shearing flow becomes strong, thus occurrence of problem of flame stagnation and burning on the hub side is restrained and strong shear flow on the tip side is secured, thereby such a three-dimensional swirler as is able to make a favorable pre-mixing of fuel and air, to prevent a life deterioration due to the burning etc. and to enhance a combustion efficiency is obtained.
  • a main swirler 101 is provided around a main fuel nozzle 102 and there are bored a plurality of nozzle holes 105 in a wall of the main fuel nozzle 102 along a circumferential direction thereof at position downstream of the main swirler 101, so that fuel F injected from the nozzle holes 105 mixes with air A which has passed through the main swirler 101 to form so-called a pre-mixture, and this basic concept and structure of swirler is same as that of the described prior art one.
  • the present embodiment is featured in that said main swirler 101 is constructed in a specific form as follows:
  • a fitting angle ⁇ of a swirler vane 101a on a hub side thereof is 25° relative to a center axis C of the main fuel nozzle 102 and a fitting angle ⁇ of the swirler vane 101a on a tip side thereof is 45° likewise relative to the center axis C of the main fuel nozzle 102.
  • the swirler vane 101a is twisted from the hub side to the tip side and the fitting angle ⁇ on the tip side of the swirler vane 101a is 45°, hence there can be formed a strong shear flow there.
  • the fuel F of natural gas and the like is supplied into a swirling flow of the air A so formed via the nozzle holes 105 bored in the main fuel nozzle 102 and a pre-mixture of the fuel F and the air A is formed.
  • the fitting angle on the hub side of the swirler vane 101a is set to 25° so that the stagnation point at the tip portion of the main fuel nozzle 102 is small and no substantial flame stagnation occurs there even if a back fire occurs, hence there is no fear of burning of components as well.
  • the fitting angle on the tip side of the swirler vane 101a is set to 45° so that the shear flow of the air A on an outer side in a radial direction of the swirler is strong and mixing of the fuel F and the air A is accelerated, hence an excellent pre-mixture can be obtained.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
EP19980116591 1997-09-10 1998-09-02 Chambre de combustion avec une vrille avec des aubes tordues Expired - Lifetime EP0902237B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP245477/97 1997-09-10
JP24547797A JPH1183016A (ja) 1997-09-10 1997-09-10 ３次元スワーラ
JP24547797 1997-09-10

Publications (3)

Publication Number Publication Date
EP0902237A2 true EP0902237A2 (fr) 1999-03-17
EP0902237A3 EP0902237A3 (fr) 2000-09-20
EP0902237B1 EP0902237B1 (fr) 2003-12-03

Family

ID=17134250

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980116591 Expired - Lifetime EP0902237B1 (fr) 1997-09-10 1998-09-02 Chambre de combustion avec une vrille avec des aubes tordues

Country Status (4)

Country Link
EP (1) EP0902237B1 (fr)
JP (1) JPH1183016A (fr)
CA (1) CA2246219C (fr)
DE (1) DE69820183T2 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003006887A1 (fr) * 2001-07-10 2003-01-23 Mitsubishi Heavy Industries, Ltd. Buse de premelange, bruleur et turbine a gaz
WO2004025183A3 (fr) * 2002-09-02 2005-01-20 Siemens Ag Bruleur
EP1985924A1 (fr) * 2007-04-23 2008-10-29 Siemens Aktiengesellschaft Dispositif de tourbillonnement
EP2728261A1 (fr) * 2012-11-06 2014-05-07 Alstom Technology Ltd Dispositif de tourbillonnement axial
KR20170003050A (ko) 2015-06-30 2017-01-09 두산중공업 주식회사 향상된 연료 유동 분포를 위한 장치를 포함한 가스 터빈 발전장치.
KR20170003053A (ko) 2015-06-30 2017-01-09 두산중공업 주식회사 향상된 연료 유동 분포를 위한 장치가 구비된 가스 터빈 발전장치.

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4486549B2 (ja) * 2005-06-06 2010-06-23 三菱重工業株式会社 ガスタービンの燃焼器
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
US20090139236A1 (en) * 2007-11-29 2009-06-04 General Electric Company Premixing device for enhanced flameholding and flash back resistance
US8925323B2 (en) * 2012-04-30 2015-01-06 General Electric Company Fuel/air premixing system for turbine engine
WO2018021249A1 (fr) * 2016-07-26 2018-02-01 Ｊｆｅスチール株式会社 Brûleur auxiliaire pour four électrique
EP3805641A4 (fr) 2018-06-01 2022-03-09 Ihi Corporation Injecteur de combustible liquide
CN113776084A (zh) * 2021-10-08 2021-12-10 浙江浙能技术研究院有限公司 一种一体化低污染燃烧室喷嘴结构及方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1931692A (en) * 1930-02-15 1933-10-24 Elliott Co Centrifugal blowing apparatus
US2798661A (en) * 1954-03-05 1957-07-09 Westinghouse Electric Corp Gas turbine power plant apparatus
US4221558A (en) * 1978-02-21 1980-09-09 Selas Corporation Of America Burner for use with oil or gas
US4695225A (en) * 1983-08-30 1987-09-22 Bbc Brown, Boveri & Company, Limited Axial swirl body for generating rotary flows
WO1989006307A1 (fr) * 1987-12-28 1989-07-13 Sundstrand Corporation Turbine a gaz avec injection de carburant a tourbillonnement force
EP0397046A2 (fr) * 1989-05-11 1990-11-14 Mitsubishi Jukogyo Kabushiki Kaisha Brûleur
US5186607A (en) * 1990-12-03 1993-02-16 Industrial Technology Research Institute Swirl generator with axial vanes

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1931692A (en) * 1930-02-15 1933-10-24 Elliott Co Centrifugal blowing apparatus
US2798661A (en) * 1954-03-05 1957-07-09 Westinghouse Electric Corp Gas turbine power plant apparatus
US4221558A (en) * 1978-02-21 1980-09-09 Selas Corporation Of America Burner for use with oil or gas
US4695225A (en) * 1983-08-30 1987-09-22 Bbc Brown, Boveri & Company, Limited Axial swirl body for generating rotary flows
WO1989006307A1 (fr) * 1987-12-28 1989-07-13 Sundstrand Corporation Turbine a gaz avec injection de carburant a tourbillonnement force
EP0397046A2 (fr) * 1989-05-11 1990-11-14 Mitsubishi Jukogyo Kabushiki Kaisha Brûleur
US5186607A (en) * 1990-12-03 1993-02-16 Industrial Technology Research Institute Swirl generator with axial vanes

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003006887A1 (fr) * 2001-07-10 2003-01-23 Mitsubishi Heavy Industries, Ltd. Buse de premelange, bruleur et turbine a gaz
US7360363B2 (en) 2001-07-10 2008-04-22 Mitsubishi Heavy Industries, Ltd. Premixing nozzle, combustor, and gas turbine
WO2004025183A3 (fr) * 2002-09-02 2005-01-20 Siemens Ag Bruleur
US7753677B2 (en) 2002-09-02 2010-07-13 Siemens Aktiengesellschaft Burner
EP1985924A1 (fr) * 2007-04-23 2008-10-29 Siemens Aktiengesellschaft Dispositif de tourbillonnement
WO2008128955A1 (fr) * 2007-04-23 2008-10-30 Siemens Aktiengesellschaft Dispositif de tourbillonnement
CN101668989B (zh) * 2007-04-23 2012-01-04 西门子公司 旋流器
EP2728261A1 (fr) * 2012-11-06 2014-05-07 Alstom Technology Ltd Dispositif de tourbillonnement axial
EP2728260A1 (fr) * 2012-11-06 2014-05-07 Alstom Technology Ltd Dispositif de tourbillonnement axial
US9557061B2 (en) 2012-11-06 2017-01-31 General Electric Technology Gmbh Axial swirler
KR20170003050A (ko) 2015-06-30 2017-01-09 두산중공업 주식회사 향상된 연료 유동 분포를 위한 장치를 포함한 가스 터빈 발전장치.
KR20170003053A (ko) 2015-06-30 2017-01-09 두산중공업 주식회사 향상된 연료 유동 분포를 위한 장치가 구비된 가스 터빈 발전장치.

Also Published As

Publication number Publication date
EP0902237B1 (fr) 2003-12-03
EP0902237A3 (fr) 2000-09-20
JPH1183016A (ja) 1999-03-26
DE69820183T2 (de) 2004-08-26
CA2246219A1 (fr) 1999-03-10
CA2246219C (fr) 2002-11-19
DE69820183D1 (de) 2004-01-15

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