EP1855054B1 - Procéder pour alimenter un brûleur a prémélange an combustible - Google Patents

Procéder pour alimenter un brûleur a prémélange an combustible Download PDF

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Publication number
EP1855054B1
EP1855054B1 EP07113855.6A EP07113855A EP1855054B1 EP 1855054 B1 EP1855054 B1 EP 1855054B1 EP 07113855 A EP07113855 A EP 07113855A EP 1855054 B1 EP1855054 B1 EP 1855054B1
Authority
EP
European Patent Office
Prior art keywords
premix
burner
gas
region
supply
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
EP07113855.6A
Other languages
German (de)
English (en)
Other versions
EP1855054A3 (fr
EP1855054A2 (fr
Inventor
Adnan Eroglu
Peter Stuber
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.)
Ansaldo Energia IP UK Ltd
Original Assignee
General Electric Technology GmbH
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 General Electric Technology GmbH filed Critical General Electric Technology GmbH
Publication of EP1855054A2 publication Critical patent/EP1855054A2/fr
Publication of EP1855054A3 publication Critical patent/EP1855054A3/fr
Application granted granted Critical
Publication of EP1855054B1 publication Critical patent/EP1855054B1/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
    • F23D17/00—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel
    • F23D17/002—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel gaseous or liquid fuel
    • 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 
    • F23C7/00—Combustion apparatus characterised by arrangements for air supply
    • F23C7/002—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion
    • 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
    • F23C2900/07002—Premix burners with air inlet slots obtained between offset curved wall surfaces, e.g. double cone burners

Definitions

  • the invention relates to a device with a premix burner, a fuel supply and a control unit for operating a gas turbine, wherein the premix burner has at least one burner shell at least partially delimiting an axially extending premixing chamber, with one directed into the premixing chamber via the burner cup Premix gas supply, wherein the premix gas is mixed with combustion air and ignited downstream, outside the premix burner.
  • Premix burners of the aforementioned type are well known for operating gas turbine plants and have different premix burner geometries. So is in the EP 0 321 809 B1 a cone-shaped premix burner consisting of several burner shells, a so-called double-cone burner, whose burner shells are composed in such a way that tangential air inlet slots for the combustion air are formed along the burner axis. At the inflow edges of the burner shells formed thereby are provided outlet openings for the premix gas, which are distributed in the direction of the burner axis. The injection of the premix gas through the outlet openings along the inflow edges of the burner shells leads due to the burner shell geometry in conjunction with the combustion air supply to a swirling mixing of the premix gas and the combustion air supply.
  • premix burner geometry is in the WO 93/17279 shown, in which the premix burner is formed with an additional conical inner body. Also in this case, the premix gas is fed into the premix burner via respective exit openings arranged along the axially extending air inlet slots, where the premix gas is mixed with combustion air and ignited downstream within the combustion chamber.
  • the emission values, the extinguishing behavior of the flame forming in the combustion chamber, the flame backflow behavior and the flame stability can be decisively influenced by a suitable choice of the abovementioned parameters.
  • premix burners With the presently known premix burners, it is almost impossible to operate the premix burner with different types of fuel, such as liquid or gaseous fuel, especially as the burner lance generally arranged centrally in the burner axis for supplying pilot gas, as mentioned above, for powering up the gas turbine and for the lower load range is required, is located in close proximity to the central liquid fuel nozzle. Unintended ignition interactions between the two fuel outlets can not be excluded.
  • fuel such as liquid or gaseous fuel
  • the two writings DE-A1-44 46 945 and EP-A1-0 592 717 disclose gas-powered premix burners in which combustion air is introduced at least approximately tangentially into the pre-mixing chamber of the burner. Fuel is injected via a plurality of nozzles arranged in the longitudinal direction of the premixing chamber and mixed with the combustion air. The nozzles are divided into at least two groups with different fuel supply.
  • the invention has the object of providing a device with a premix burner, a fuel supply and a control or regulating unit according to the preamble of claim 1 such that the above-mentioned prior art disadvantages are avoided.
  • it is necessary to take measures at the premix burner, so that an optimized adaptation of the premix burner behavior in the entire load range of the gas turbine is possible. This should in particular be done without great technical and design effort and be feasible with only a small cost.
  • the idea underlying the invention is the axial stepped supply of premix gas along the flanks of the burner shells by the burner shells are divided into at least two axially successively arranged areas, which are each supplied via PremixgaszuWORKtechnischen separated.
  • the separate areas along the burner shells are arranged axially behind one another in the direction of flow of the premix burner, wherein it has been recognized according to the invention that more than 60% of the total premix gas supply is to be made via the upstream first region for starting up the gas turbine and that the load is required for the further startup Gas turbine to full load a gradual or continuous redistribution of Premixgaszu Entry on the downstream of the first area adjacent areas takes place.
  • An embodiment designed according to the invention for the targeted supply control of premix gas for the burner shells of the premix burner subdivided into different regions is set out in the following description with reference to the figures.
  • An essential aspect of the device described in detail below is the separate, metered premix gas supply to the individual, axially successively arranged regions along the burner shells, through which the premix gas is injected into the interior of the premix burner.
  • FIG. 1 is a schematic representation of a longitudinal section through a cone-shaped Vormischbrenner shown.
  • the premix burner has cone-shaped burner shells 1, 2 along which premix gas outlet openings 3 are provided in the axial direction of the burner longitudinal axis A, through which premix gas can be fed into the interior of the premix burner.
  • the burner shells 1, 2 are divided into two differently separated regions, stage S1 and stage S2, which are supplied with premix gas by different premix gas supply lines 4, 5.
  • stage S1 and stage S2 which are supplied with premix gas by different premix gas supply lines 4, 5.
  • air inlet slots supply air led into the interior of the premix burner, which mixes with the premix gas 6 to a fuel air mixture.
  • a liquid fuel atomization direction 7 can be provided in the center of the premix burner, which allows mixing operation or switching from gaseous fuel to liquid fuel.
  • the supply of liquid fuel takes place with the aid of a known atomizing nozzle, which generates a conically spreading atomizing cloud within the premix burner.
  • the spreading liquid fuel cloud is surrounded by a protective air jacket.
  • a pilot is not, as is common in the prior art, made, but in the illustrated in the embodiment two-stage premix burner each area of the burner shell is supplied with a Premixgaszubow upstream in the premix burner is arranged. In the exemplary embodiment, this is the area stage 1, which is operated for starting and for operating the premix burner in the low load range with more than 60% of the total Premixgaszu exit.
  • FIG. 2 An overview diagram emerges from which the percentage distribution of the premix gas distribution between area S1 and area S2 increases can be found.
  • the fields entered in black correspond to the portion of the premix gas exiting via region 1, the brighter fields in each case to the premix gas fraction which reaches the interior of the burner via region S2 of the premix burner.
  • the lion's share ie, more than 90%
  • the proportion of the premix gas emerging over the region S2 increases slightly.
  • both areas S1 and S2 are supplied with premix gas in approximately equal parts.
  • FIG. 3 Another possibility of controlled premix gas supply to the separate areas of the premix burner is shown in the schematic representation according to FIG. 3 refer to. Again, it is in accordance with the embodiment FIG. 3 around a cone-shaped premix burner, which has two regions S1 and S2, via which premix gas enters the interior of the premix burner separately.
  • a main control valve 9 is provided in a common supply line 8 via which premix gas is supplied to the premix burner.
  • the direct inflow of premix gas to the area S1 of the premix burner can be regulated.
  • a crossing point 10 is provided at which a portion of the premix gas is discharged into a branch line 11.
  • a further control unit in the form of a spring-loaded pressure relief valve 12 is provided, which will be described in more detail below with reference to FIG. 4 is described.
  • a bypass line 13 whose flow cross-section is small enough or in the a corresponding throttle element 14 is provided, ensures that when the control valve 12 is closed, a small premix gas flow to the region S2 of the premix burner can be supplied.
  • the prevailing in the branch line 11 Premixgastik increases, which is able to open the spring-loaded throttle valve 12 continuously, whereby an increasing proportion of flowing through the main control valve 9 premix gas flows through the pressure relief valve 12 into the area S2. If the supply gas pressure continues to increase, the overpressure valve 12 opens completely, as a result of which a large proportion of the premix gas can reach the region S2 of the premix burner.
  • the supply lines and adjusting the response of the pressure relief valve 12 it is possible to optimize the behavior of the premix burner in terms of emission and vibration behavior.
  • Such a pressure relief valve is as an advantageous embodiment in FIG. 4 shown.
  • the pressure relief valve 12 has a conically shaped piston 15, the spring-loaded by a spring 16 gas-tight rests on a mating contour 17. Now, the piston 15 by means of gas pressure (see Arrow on the left side of the throttle valve) is pressurized, so the pressure acting on the piston 15 gas pressure can compress the spring 16 against a stop 18. This opens a gap between the piston 15 and the mating contour 17, whereby gas can pass through the pressure relief valve to the right.
  • the gas pressure-dependent flow rate of the premix gas by the pressure relief valve 12 is set individually.
  • the entire device is structurally simple and inexpensive to produce.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Feeding And Controlling Fuel (AREA)

Claims (3)

  1. Dispositif avec un brûleur de pré-mélange, une alimentation en carburant et une unité de commande ou de régulation pour le fonctionnement d'une turbine à gaz, le brûleur de pré-mélange comprenant au moins une coque de brûleur (1, 2), qui délimite au moins partiellement une chambre de pré-mélange s'étendant axialement, et une alimentation de gaz de pré-mélange orientée dans la chambre de pré-mélange au-dessus de la coque de brûleur (1, 2), le gaz de pré-mélange (6) étant mélangé avec de l'air de combustion à l'intérieur du brûleur de pré-mélange et est allumé en aval à l'extérieur du brûleur de pré-mélange, au moins deux zones (S1, S2), séparées physiquement s'étendant axialement le long de la coque de brûleur (1, 2), par l'intermédiaire desquelles le gaz de pré-mélange (6) peut être introduit dans la chambre de pré-mélange et qui sont reliées avec des conduites d'alimentation en gaz de pré-mélange (4, 5) séparées les unes des autres, une première zone (S1) étant prévue dans la coque de brûleur (1, 2), qui est disposée en amont dans le brûleur de pré-mélange et en ce qu'au moins une deuxième zone (S2) est prévue, qui est disposée dans le brûleur de pré-mélange en aval de la première zone (S1) et en ce qu'une unité de régulation ou de commande est prévue, qui est reliée avec les conduites d'alimentation en gaz de pré-mélange (4, 5) et qui effectue, en fonction de la zone de charge de la turbine à gaz, une répartition de l'alimentation en gaz de pré-mélange sur les différentes zones,
    caractérisé en ce que
    la conduite d'alimentation en gaz de pré-mélange (5) de la première zone (S1) est prévue avec une soupape d'étranglement (9), en ce que, entre la soupape d'étranglement (9) et la première zone (S1) se trouve un point de croisement (10), d'où une conduite d'embranchement (11) conduit vers la deuxième zone (S2) et en ce que, entre le point de croisement (10) et la deuxième zone (S2), se trouve l'unité de régulation ou de commande.
  2. Dispositif selon la revendication 1,
    caractérisé en ce que
    l'unité de régulation ou de commande est une soupape de surpression (12) actionnée par la force d'un ressort.
  3. Dispositif selon la revendication 1 ou 2,
    caractérisé en ce que
    lors de l'alimentation de la première zone (S1) en gaz de pré-mélange (6), entre le point de croisement (10) et la deuxième zone (S2), se trouve une conduite de dérivation (13), qui assure une alimentation minimale de la deuxième zone (S2) en gaz de pré-mélange (6), si la première zone (S1) est alimentée en gaz de pré-mélange.
EP07113855.6A 2000-10-05 2001-10-03 Procéder pour alimenter un brûleur a prémélange an combustible Expired - Lifetime EP1855054B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10049205A DE10049205A1 (de) 2000-10-05 2000-10-05 Verfahren und Vorrichtung zur Brennstoffversorgung eines Vormischbrenners
EP01970078A EP1334309B1 (fr) 2000-10-05 2001-10-03 Procede pour alimenter un bruleur a premelange en combustible

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP01970078A Division EP1334309B1 (fr) 2000-10-05 2001-10-03 Procede pour alimenter un bruleur a premelange en combustible

Publications (3)

Publication Number Publication Date
EP1855054A2 EP1855054A2 (fr) 2007-11-14
EP1855054A3 EP1855054A3 (fr) 2008-04-09
EP1855054B1 true EP1855054B1 (fr) 2016-08-17

Family

ID=7658698

Family Applications (2)

Application Number Title Priority Date Filing Date
EP01970078A Expired - Lifetime EP1334309B1 (fr) 2000-10-05 2001-10-03 Procede pour alimenter un bruleur a premelange en combustible
EP07113855.6A Expired - Lifetime EP1855054B1 (fr) 2000-10-05 2001-10-03 Procéder pour alimenter un brûleur a prémélange an combustible

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP01970078A Expired - Lifetime EP1334309B1 (fr) 2000-10-05 2001-10-03 Procede pour alimenter un bruleur a premelange en combustible

Country Status (7)

Country Link
US (1) US7003960B2 (fr)
EP (2) EP1334309B1 (fr)
JP (1) JP4143401B2 (fr)
CN (1) CN1236227C (fr)
AU (1) AU2001290191A1 (fr)
DE (2) DE10049205A1 (fr)
WO (1) WO2002029318A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
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DE10049203A1 (de) * 2000-10-05 2002-05-23 Alstom Switzerland Ltd Verfahren zur Brennstoffeinleitung in einen Vormischbrenner
DE10051221A1 (de) * 2000-10-16 2002-07-11 Alstom Switzerland Ltd Brenner mit gestufter Brennstoff-Eindüsung
EP1510755B1 (fr) 2003-09-01 2016-09-28 General Electric Technology GmbH Brûleur avec lance et alimentation étagée en carburant
DE102004002631A1 (de) * 2004-01-19 2005-08-11 Alstom Technology Ltd Verfahren zum Betreiben einer Gasturbinen-Brennkammer
CA2555481A1 (fr) * 2004-02-12 2005-08-25 Alstom Technology Ltd Systeme de bruleur de premelange pour faire fonctionner une chambre de combustion, et procede pour faire fonctionner une chambre de combustion
DE502006007811D1 (de) 2005-06-17 2010-10-21 Alstom Technology Ltd Brenner zur vormischartigen Verbrennung
WO2007028711A1 (fr) * 2005-09-05 2007-03-15 Siemens Aktiengesellschaft Ensemble de bruleurs pour une chambre de combustion, chambre de combustion correspondante et procede pour bruler un combustible
DE102006015529A1 (de) * 2006-03-31 2007-10-04 Alstom Technology Ltd. Brennersystem mit gestufter Brennstoff-Eindüsung
US8147121B2 (en) * 2008-07-09 2012-04-03 General Electric Company Pre-mixing apparatus for a turbine engine
EP2208927B1 (fr) 2009-01-15 2016-03-23 Alstom Technology Ltd Brûleur d'une turbine à gaz
EP2348256A1 (fr) * 2010-01-26 2011-07-27 Alstom Technology Ltd Procédé de fonctionnement d'une turbine à gaz et turbine à gaz
CN101846319B (zh) * 2010-05-26 2012-02-08 清华大学 一种弱旋滞止气体燃烧器
CN109340752B (zh) * 2018-10-09 2019-09-03 新中天环保股份有限公司 一种窑头多功能燃烧器
DE112021002128T5 (de) * 2020-03-31 2023-03-09 Mitsubishi Heavy Industries, Ltd. Brennkammer für Gasturbine und Gasturbine
US11774093B2 (en) 2020-04-08 2023-10-03 General Electric Company Burner cooling structures

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EP1262714A1 (fr) * 2001-06-01 2002-12-04 ALSTOM (Switzerland) Ltd Brûleur avec recirculation des gaz de combustion

Also Published As

Publication number Publication date
AU2001290191A1 (en) 2002-04-15
CN1468352A (zh) 2004-01-14
US7003960B2 (en) 2006-02-28
CN1236227C (zh) 2006-01-11
EP1855054A3 (fr) 2008-04-09
EP1855054A2 (fr) 2007-11-14
DE50113065D1 (de) 2007-11-08
EP1334309B1 (fr) 2007-09-26
JP2004510918A (ja) 2004-04-08
EP1334309A1 (fr) 2003-08-13
JP4143401B2 (ja) 2008-09-03
US20040029058A1 (en) 2004-02-12
WO2002029318A1 (fr) 2002-04-11
DE10049205A1 (de) 2002-05-23

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