EP1559955B1 - Bruleur - Google Patents

Bruleur Download PDF

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Publication number
EP1559955B1
EP1559955B1 EP05101530.3A EP05101530A EP1559955B1 EP 1559955 B1 EP1559955 B1 EP 1559955B1 EP 05101530 A EP05101530 A EP 05101530A EP 1559955 B1 EP1559955 B1 EP 1559955B1
Authority
EP
European Patent Office
Prior art keywords
fuel
burner
outlet openings
burner according
fuel 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
EP05101530.3A
Other languages
German (de)
English (en)
Other versions
EP1559955A2 (fr
EP1559955A3 (fr
Inventor
Jaan Hellat
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.)
General Electric Technology GmbH
Original Assignee
Alstom Technology 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 Alstom Technology AG filed Critical Alstom Technology AG
Priority claimed from EP01951833A external-priority patent/EP1292795B1/fr
Publication of EP1559955A2 publication Critical patent/EP1559955A2/fr
Publication of EP1559955A3 publication Critical patent/EP1559955A3/fr
Application granted granted Critical
Publication of EP1559955B1 publication Critical patent/EP1559955B1/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
    • 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
    • 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
    • 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
    • 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
    • F23C2900/07021—Details of lances

Definitions

  • the invention relates to a burner according to the preamble of claim 1.
  • a preferred application for such burners are the combustion chambers of gas turbines; Such burners continue to be used, for example, in atmospheric boiler furnaces.
  • From the EP 0 321 809 is a multi-shell conical burner, a so-called double-cone burner, according to the preamble of claim 1 known.
  • the conical swirl generator composed of several shells, a swirl flow is generated in the conical interior enclosed by the partial cone shells. Due to a jump in cross section at a combustion chamber end of the burner, the swirl flow becomes unstable, and turns into an annular swirling flow with backflow in the core. This backflow allows the stabilization of a flame front at the burner outlet.
  • the shells of the swirl generator are assembled in such a way that tangential air inlet slots for combustion air are formed along the burner axis.
  • a gaseous premix fuel provided, which have distributed in the direction of the burner axis outlet openings for the premixed gas.
  • the gas is injected through the outlet openings or bores transversely to the air inlet gap. This injection, in conjunction with the swirl generated in the swirl space of the combustion air-fuel gas flow to a good mixing of the fuel or premixed gas with the combustion air. Good mixing in such premix burners is the prerequisite for low NO x values during the combustion process.
  • a burner for a heat generator known, which has an additional mixing section for further mixing of fuel and combustion air following the swirl generator.
  • This mixing section can be designed, for example, as a downstream tube, into which the flow emerging from the swirl generator is transferred without appreciable flow losses. Through this additional mixing section, the degree of mixing can be further increased and thus the pollutant emissions can be reduced.
  • the WO 93/17279 shows another known premix burner, in which a cylindrical swirl generator is used with an additional conical inner body.
  • the premix gas is also injected via feeders with corresponding outlet openings in the swirl space, along the axially extending air inlet slots are arranged.
  • This burner has in the conical inner body in addition to a central supply of fuel gas, which can be injected near the outlet opening of the burner for piloting into the swirl space.
  • This additional pilot stage is used to start the burner.
  • the supply of the pilot gas in the outlet region of the burner leads to increased NO x emissions, since in this area only an insufficient mixing with the combustion air can take place.
  • the EP 0918191 A1 shows a generic burner for operating a heat generator, which also has a second feed for another fuel type, which is matched to the other type of fuel in parallel to a first feed for fuel. Both feeds can be controlled independently of each other. With this configuration, the burner can be operated without reshaping with different types of fuel.
  • the premixing gas is injected into the air inlet gap by means of feeds with outlet openings arranged essentially in the direction of the burner axis.
  • the characteristic of the injection with regard to penetration depth and mixing of the gas jets and the fuel distribution along the air inlet slots or the burner axis are predetermined.
  • the arrangement of the outlet openings thus already determines the mixing quality of the gas and the combustion air and the fuel distribution at the burner outlet.
  • a double-cone burner or a method for operating a double-cone burner has become known, in which over nozzles disposed along the tangential air inlet openings a first fuel, for example natural gas, is injected into the combustion air stream, while upstream of the entry of the air into the burner in the region of the inlet slots channels are formed with injectors, via which a second, different from the first fuel fuel, for example, a karkalorisches gas which usually contains easily flammable hydrogen is injected.
  • a first fuel for example natural gas
  • the object of the present invention is to provide a burner which can be operated stably even in the case of changes in the load, the gas quality or the gas preheating temperature with approximately constant NO x emission values, preferably in the premixing mode.
  • the proposed burner consists of a swirl generator for a combustion air flow, a swirl space and means for introducing fuel into the combustion air flow, the swirl generator having combustion air inlet openings for the combustion air flow entering tangentially into the swirl space, the means for introducing fuel into the combustion air flow one or a plurality of first fuel feeds having a first group of fuel burner outlets arranged substantially in the direction of the burner axis for a first premix fuel quantity; and the burner comprising one or more second fuel feeders having a second group of fuel burner outlets arranged substantially in the direction of the burner axis for a second quantity of fuel , preferably a premix fuel quantity, which second fuel feeds are independent of the first or the first fuel feeds can be acted upon with fuel.
  • the proposed burner is characterized in that in the swirl space, an inner body is arranged, wherein the fuel outlet openings of at least one second fuel supply are arranged distributed substantially in the direction of the burner axis on the inner body.
  • the inner body is a fuel lance which is arranged in the swirl space on the burner axis.
  • one or more of the first groups of fuel outlet openings are arranged in the region of at least one of the combustion air inlet openings.
  • an arrangement essentially in the direction of the burner axis is to be understood to mean an arrangement on axes which run parallel or at an angle of ⁇ 45 ° to the burner axis.
  • some of the second fuel feeds are also arranged directly next to the first fuel feeds, preferably parallel to them. In this case, at least a second fuel supply should be provided next to each first fuel supply.
  • conical swirl generators there may be conical swirl generators, as they are known from the cited prior art documents, for example, with two, four or more air inlet slots used.
  • Other geometries, such as cylindrical swirl generators or cylindrical swirl generators with conical or cylindrical inner bodies can be used.
  • some of the second fuel feeds are arranged on the outer shell of the swirl body and, in particular, on the air inlet slots along the latter. It is essential in the case of the present burner that the second fuel feeds have a plurality of fuel discharge openings distributed essentially in the direction of the burner axis, in order to be able to achieve a sufficient premix.
  • the outlet openings are usually parallel to or below a predetermined by a conical shape of the swirl generator or inner body angle to the burner axis axes.
  • the second fuel outlet openings of the second fuel supply lines may have different mutual distances or flow-through cross sections compared to the first fuel outlet openings.
  • the respective fuel discharge openings may also have the same mutual distances, but may be arranged offset from one another. This leads to a more uniform injection of Vormischbrennschers in the swirl chamber.
  • the first fuel outlet openings over the entire axial extent of the combustion air inlet openings, the second fuel outlet openings However, be arranged only in a specific axial portion.
  • premix fuel supply for the independent application of the premix fuel to the first and second fuel feeds, these are equipped with different connections.
  • means are provided for the independent regulation or control of the premix fuel supply to the first and the second fuel feeds.
  • the different supply can be controlled for example by a suitable control valve.
  • the invention also includes such embodiments, in which in addition to first and second Also third, fourth, etc. fuel supplies available and can be acted upon independently with fuel.
  • the supply of the fuel via the first fuel feeds is controlled or regulated separately from the supply of the fuel via the second fuel feeds, the same fuel being supplied to the first and second fuel feeds.
  • the fuel is used as a premix fuel and divided in a variable mass flow ratio to the first and second feeders.
  • the feed of premix fuel differs from the feed of pilot fuel, ie fuel for the realization of a pilot stage, in that premix fuel having a higher momentum, preferably transverse to the flow of combustion air, is introduced into the swirl space.
  • pilot fuel ie fuel for the realization of a pilot stage
  • the fuel is distributed depending on the load on the first and second fuel feeds introduced into the burner.
  • substantially the entire amount of fuel is supplied via the first or the first fuel feeds and introduced via the first group of fuel outlet openings in the combustion air flow, and in a further operating state, at least part of the total amount of fuel introduced into the combustion air stream via at least one of the second fuel feeds with the second group of fuel outlet openings.
  • the burner is operated in a heat generator, then in a partial load state of the heat generator all the fuel can be supplied via the first fuel feeds, and in full load operation of the heat generator, the fuel can be split between the first fuel feeds and one or more second fuel feeds.
  • the distribution can also be controlled according to other operating variables.
  • the fuel can also be used as a function of measured combustor pulsations of a gas turbine, of pollutant emissions, of measured material temperatures, of the flame position detected by a flame position sensor or of other measuring or Operating parameters are distributed to the first and second fuel supply lines.
  • the one or more second fuel feeds through which the amount of premix fuel, which is injected via the second group of fuel discharge openings in the swirl space, - and thus the fuel pre-pressure - can be set independently of the amount of premix fuel, over the flows first fuel feeds, can be a simple adaptation of the mixing distribution and the mixing quality to achieve different boundary conditions. Furthermore, a compensation of different Wobbe numbers can be achieved by this embodiment, for example, by carrying the first fuel supply a certain power or a certain volume flow and the rest of the power or the volume flow is driven over the second fuel supply.
  • the axial and radial fuel distribution in the burner can be favorably influenced.
  • the fuel can then be evenly distributed, resulting in low emissions.
  • the burners are shown in a highly schematized design, so that only the essential features for the respective explanation are highlighted in each case at one position.
  • the further design of the burners shown is familiar to the person skilled in the art, inter alia, from the documents cited as state of the art, which form an integral part of the present description.
  • liquid fuel can also be introduced into the combustion air flow via the fuel outlet openings.
  • the fuel continues to be referred to as premix fuel; It goes without saying that a portion of the total amount of fuel in certain load ranges can also be introduced as a pilot fuel to further increase the flame stability.
  • Feeders for pilot fuel are not shown in any of the figures, since they are not essential to the invention; however, knowing the state of the art, the person skilled in the art will readily be able to implement these in the burners illustrated by way of example, if he considers this necessary.
  • the illustrated Burners comprise the conical swirl body 1, in the outer form of which at the inflow edges of the air inlet slots a first group of outlet openings 6 for premixing gas are arranged.
  • the burners are further provided with a central fuel lance 12, which may have at its combustion chamber end, ie at its tip, a nozzle - as in the present example - which can be used for a liquid fuel 13 or for a pilot fuel.
  • a nozzle - as in the present example - which can be used for a liquid fuel 13 or for a pilot fuel.
  • Around this nozzle around outlet openings for umbrella air 14 may be provided in a known manner.
  • the burner shown a further fuel supply to a second group of outlet openings 8 in the fuel lance 12.
  • the outlet openings 8 of the second group are arranged substantially in the direction of the burner axis in the lateral surface of the fuel lance 12, as shown in Figures 19 to 21 can be seen, and preferably distributed radially symmetrically about the axis of the fuel lance 12. They allow the radially from the fuel lance 12 outwardly directed injection of fuel into the swirl space.
  • the number and size of these outlet openings 8 and their distribution on the fuel lance 12 - in the axial direction and circumferential direction - is selected as a function of the respective requirements of the burner such as extinction limits, pulsations and kickback limits.
  • the fuel lance 12 may extend relatively far into the swirl space, so-called “Long Lance EV Brenner ", as in the Figures 1 and 2 represented, or protrude only a short distance in the swirl chamber as in the FIG. 3 shown.
  • the second group of outlet openings 8 is preferably arranged in the rear, ie farthest from the combustion chamber, the region of the swirl space on the fuel lance 12, as indicated in the figures.
  • the fuel supply to the first group of outlet openings 6 regardless of the fuel supply to the second group of outlet openings 8 can control or regulate with fuel.
  • the embodiment of the Fig. 1 allows a very advantageous stepped operation of the burner, in which both the fuel feeds to the first group of outlet openings 6 and the fuel feeds to the second group of outlet openings 8 are fed with premixed gas.
  • the independent control possibility of the fuel supply to the first and second group of outlet openings 6, 8 allows an optimally adapted to the respective operating conditions of the burner or the burner using the system operation.
  • the second group of outlet openings 8 on the fuel lance 12 are in this example outlet openings of the first group of outlet openings 6 on the swirler 1, so that the first and second group of outlet openings 6, 8 in certain operating conditions, for example, exclusively, ie without the other Group, can be fueled.
  • the burner shown in the figure can also be operated in the diffusion mode with appropriate supply of the fuel and corresponding configuration of the second group of outlet openings via these outlet openings 8.
  • the spatial separation of the outlet openings 8 of the injection liquid fuel 13 at the top of the fuel lance 12 can be avoided in this case, in contrast to known burners, the penetration of fuel droplets or fuel vapor into the fuel supply system for the second group of outlet openings 8.
  • FIG. 2 shows an embodiment of a burner, which can also be operated in the very advantageous stepped mode.
  • the outlet openings 6 are closed or there are no outlet openings 6 are provided because their function is taken over by the outlet openings 8 on the fuel lance 12.
  • FIG. 21 shows the same burner with shortened fuel lance 12, which is designed for the same mode of operation.
  • both groups of outlet openings 6, 8 are supplied with premix gas. Ignition and starting of the burner are carried out in an operating mode in which the premix gas is introduced into the swirl chamber mainly via the outlet openings 8 on the fuel lance 12, hereinafter also referred to as stage 1. As the load increases, the supply of premix gas becomes Stage 1 is reduced and the supply of premixed gas via the first group of outlet openings 6, hereinafter referred to as stage 2, increased.
  • stage 2 Such a distribution of the premix fuel to the stages 1 and 2, depending on the operating condition of the burner can exemplify the FIG. 4 be removed. In this way, for example, a gas turbine with such a burner from ignition to base load can be operated without a pilot stage.
  • FIG. 5 Another embodiment of a burner, in this example using a cylindrical swirl generator 1 with a conical inner body 9, for carrying out the present method is exemplified in US Pat FIG. 5 shown.
  • FIG. 5 again shows the first 5 and the second feed channel 7 with the corresponding outlet openings 6, 8.
  • the first feed channel is arranged in the outer formwork of the swirl body 1 and the second feed channel 7 is arranged on the cylindrical inner body 9.
  • the second supply channel 7 is hereby preferably arranged within the outer wall of the inner body 9, wherein in this case too, as in the preceding examples, a symmetrical distribution of a plurality of feed channels 7 around the burner axis 3 can be selected.
  • the second supply line 7 run centrally in the inner body 9, in which case the outlet openings 8 must be formed via corresponding radially extending channels to the swirl space 2.
  • the outlet openings 8 In the front tapered region of the inner body 9 can also have one or more additional outlet openings be provided with a correspondingly separate feed for fuel (as a pilot stage) or air.
  • FIGS. 6 to 9 show schematically examples of swirler geometries, with which the burner described can be realized.
  • a burner with conical swirl body 1 and conical inner body 9 a burner formed with an inverted cone swirl body 1 and conical inner body 9, a burner with tulpenförmigem and a burner with funnel-shaped swirl body 1 are shown from top to bottom.
  • the second feeds can be arranged both in the swirl body 1 and in the inner body 9.
  • All of the geometries shown here have in common that the axial flow cross-section of the swirl space in the area of the swirl body increases towards the burner outlet. Although this is not absolutely necessary for a generic premix burner, but is an advantageous embodiment of the swirl generator.
  • FIGS. 12 and 13 schematically show two examples of the structure of a swirl body in cross-section, as it can be used in the burner according to the invention.
  • a swirler is shown, which is composed of four mutually offset shells 1a, 1b, 1c, 1d, which form four tangential air inlet slots 4 in the illustrated arrangement.
  • the shells may be formed differently in the cross section shown, for example circular segment, elliptical or oval.
  • the body part 1a, 1b, 1c, 1d are arranged so that their respective central axes 3a, 3b, 3c, 3d are arranged offset to the actual burner axis.
  • FIG. 13 a monolithic swirl body 1 with tangential air inlet openings 4 introduced therein is shown.
  • the air inlet openings 4 may be formed, for example, as milled air inlet slots or as rows of air inlet holes.
  • FIGS. 14 and 15 show examples of the supply of a fuel amount P0 to the burner.
  • the fuel line branches to divide the total fuel amount P0 to a fuel amount P1 for the first group of exhaust ports 6 and to a fuel amount P2 for the second group of exhaust ports 8.
  • FIG. 14 the setting of the division or mass flow ratio via a respective valve 15 and 16 in each of the branches.
  • FIG. 15 shows an embodiment in which a valve 16 is arranged in front of the branch for adjusting the total fuel amount P0 and another valve 15 in the branch to the first group of outlet openings 6.
  • the valve 15 may also be arranged in the branch to the second group of outlet openings 8.
  • Such an arrangement can also supply a plurality of burners with fuel simultaneously in the set mass flow ratio, as indicated by the dashed lines in the figures.
  • the mass flow ratio P1 / P2 is changed by controlling the valves in dependence on the operating state of the burner.
  • the change in the mass flow ratio may be controlled or regulated depending on various measurement and operating characteristics, as already stated in a previous part of the present description.
  • the illustrated embodiments are independent of the burner geometry and can be used in all burners of the preceding embodiments.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Combustion Of Fluid Fuel (AREA)

Claims (20)

  1. Brûleur, composé pour l'essentiel d'un générateur de turbulences (1) pour un flux d'air de combustion (11), d'une chambre de turbulences (2) et de moyens de chargement du combustible dans le flux d'air de combustion, pour lequel le générateur de turbulences (1) comporte des orifices d'entrée d'air de combustion (4) pour le flux d'air de combustion entrant de façon tangentielle dans la chambre de turbulences (2), les moyens de chargement du combustible dans le flux d'air de combustion comprennent au moins un premier conduit d'alimentation de combustible (5) avec un premier groupe d'orifices de sortie de combustible (6) disposés pour l'essentiel en direction d'un axe de brûleur (3) pour une première quantité de combustible de prémélange (P1) et le brûleur comporte un ou plusieurs deuxièmes conduits d'alimentation (7), avec un deuxième groupe d'orifices de sortie de combustible (8) disposés pour l'essentiel en direction de l'axe du brûleur (3), pour une deuxième quantité de combustible (P2), lesquels deuxièmes conduits d'alimentation de combustible (7) peuvent être alimentés en combustible indépendamment des premiers conduits d'alimentation de combustible (5) caractérisé en ce qu'un corps intérieur (9,10) est disposé dans la chambre de turbulences (2), pour lequel les orifices de sortie de combustible (8) d'au moins un deuxième conduit d'alimentation de combustible (7), réparties pour l'essentiel dans la direction de l'axe de brûleur (3), sont disposées sur le corps intérieur (9).
  2. Brûleur selon la revendication 1 caractérisé en ce que le corps intérieur (9) est une lance de combustible (12) qui comporte à son extrémité côté chambre de combustion au moins une buse de sortie pour le combustible liquide (13) et/ou le combustible pilote.
  3. Brûleur selon l'une quelconque des revendications précédentes caractérisé en ce que les orifices de sortie de combustible (8) disposés répartis sur le corps intérieur (9) en direction de l'axe de brûleur (3) sont disposés dans une zone partielle axiale du corps intérieur (9), éloignée de l'extrémité du côté chambre de combustion.
  4. Brûleur selon l'une quelconque des revendications précédentes caractérisé en ce que le deuxième groupe d'orifices de sortie de combustible (8) est constitué pour amener le combustible de prémélange.
  5. Brûleur selon l'une quelconque des revendications précédentes caractérisé en ce qu'au moins un des groupes d'orifices de sortie de combustible est disposé dans une zone d'au moins un des orifices d'entrée d'air de combustion (4).
  6. Brûleur selon l'une quelconque des revendications précédentes caractérisé en ce que plusieurs premiers conduits d'alimentation de combustible (5) et plusieurs deuxièmes conduits d'alimentation de combustible (7) sont prévus, au moins un deuxième conduit d'alimentation de combustible (7) étant attribué à chacun des premiers conduits d'alimentation de combustible (5).
  7. Brûleur selon l'une quelconque des revendications précédentes caractérisé en ce que les deuxièmes conduits d'alimentation de combustible (7) sont disposés directement au voisinage des premiers conduits d'alimentation de combustible (5).
  8. Brûleur selon l'une quelconque des revendications précédentes caractérisé en ce que les orifices d'entrée de l'air de combustion (4) sont des fentes d'admission tangentielles passant pour l'essentiel en direction de l'axe de brûleur (3).
  9. Brûleur selon la revendication 8 caractérisé en ce que le long de chaque fente d'admission est disposé un premier conduit d'alimentation de combustible (5) avec un premier groupe d'orifices de sortie de combustible (6).
  10. Brûleur selon l'une quelconque des revendications 8 ou 9 caractérisé en ce que le long de chaque fente d'admission est disposé au moins un deuxième conduit d'alimentation de combustible (7) avec un deuxième groupe d'orifices de sortie de combustible (8).
  11. Brûleur selon l'une quelconque des revendications précédentes caractérisé en ce que les orifices de sortie de combustible (8) d'un ou plusieurs deuxièmes conduits d'alimentation de combustible (7) sont disposés sur des positions axiales entre les orifices de sortie de combustible (6) d'un ou plusieurs premiers conduits d'alimentation de combustible (5).
  12. Brûleur selon l'une quelconque des revendications précédentes caractérisé en ce que les orifices de sortie de combustible (6,8) de tous les groupes sont répartis sur toute l'extension axiale des orifices d'entrée de l'air de combustion (4).
  13. Brûleur selon l'une quelconque des revendications précédentes caractérisé en ce que les orifices de sortie de combustible (6,8) d'au moins un des groupes sont répartis sur toute l'extension axiale des orifices d'entrée de l'air de combustion (4) et les orifices de sortie de combustible (6,8) d'au moins un autre groupe sont répartis sur une zone partielle axiale des orifices d'entrée de l'air de combustion (4).
  14. Brûleur selon l'une quelconque des revendications précédentes caractérisé en ce que les orifices de sortie de combustible (6,8) d'au moins un des groupes sont répartis sur une première zone partielle axiale des orifices d'entrée de l'air de combustion (4) et les orifices de sortie de combustible (6,8) d'autres groupes sont répartis sur d'autres zones partielles axiales des orifices d'entrée de l'air de combustion (4).
  15. Brûleur selon la revendication 14 caractérisé en ce que les zones partielles axiales ne se chevauchent pas.
  16. Brûleur selon la revendication 14 caractérisé en ce qu'au moins deux des zones partielles axiales se chevauchent au moins en partie.
  17. Brûleur selon l'une quelconque des revendications précédentes caractérisé en ce que les orifices de sortie de combustible (6,8) de deux ou plusieurs groupes comportent différentes sections de passage.
  18. Brûleur selon l'une quelconque des revendications précédentes caractérisé en ce que des moyens pour le pilotage indépendant de l'alimentation de combustible de prémélange sont prévus pour le ou les premiers (5) et pour le ou les deuxièmes conduits d'alimentation de combustible (7).
  19. Brûleur selon la revendication 18 caractérisé en ce que les moyens pour le pilotage indépendant de l'alimentation de combustible de prémélange comportent un conduit de combustible commun, qui se ramifie en un premier conduit d'alimentation vers le ou les premiers (5) et en un deuxième conduit d'alimentation vers le ou les deuxièmes conduits d'alimentation de combustible (7), pour lequel au moins dans un des conduits d'alimentation est disposée une soupape (15,16) pour régler le débit de combustion.
  20. Brûleur selon l'une quelconque des revendications précédentes caractérisé en ce que plusieurs des deuxièmes conduits d'alimentation de combustible (7) peuvent être alimentés en combustible indépendamment les uns des autres.
EP05101530.3A 2000-06-15 2001-06-13 Bruleur Expired - Lifetime EP1559955B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10029607A DE10029607A1 (de) 2000-06-15 2000-06-15 Brenner mit gestufter Vormischgas-Eindüsung
DE10029607 2000-06-15
EP01951833A EP1292795B1 (fr) 2000-06-15 2001-06-13 Procede pour l'exploitation d'un bruleur a premelange avec injection etagee de gaz

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EP01951833A Division EP1292795B1 (fr) 2000-06-15 2001-06-13 Procede pour l'exploitation d'un bruleur a premelange avec injection etagee de gaz

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EP1559955A2 EP1559955A2 (fr) 2005-08-03
EP1559955A3 EP1559955A3 (fr) 2005-10-26
EP1559955B1 true EP1559955B1 (fr) 2015-11-04

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10164099A1 (de) * 2001-12-24 2003-07-03 Alstom Switzerland Ltd Brenner mit gestufter Brennstoffeinspritzung
EP1730447A1 (fr) * 2004-03-31 2006-12-13 Alstom Technology Ltd Brûleur
CH703655A1 (de) * 2010-08-27 2012-02-29 Alstom Technology Ltd Vormischbrenner für eine gasturbine.
EP2685160B1 (fr) * 2012-07-10 2018-02-21 Ansaldo Energia Switzerland AG Brûleur de prémélange du type multi-cônes destiné à une turbine à gaz

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE413283C (de) * 1925-05-05 Faconeisen Walzwerk L Mannstae Gasfeuerung fuer Dampfkessel und Drehtrommeln
US5307634A (en) * 1992-02-26 1994-05-03 United Technologies Corporation Premix gas nozzle
EP0592717B1 (fr) * 1992-10-16 1998-02-25 Asea Brown Boveri Ag Brûleur opérant au gaz du type à prémélange
DE4304213A1 (de) * 1993-02-12 1994-08-18 Abb Research Ltd Brenner zum Betrieb einer Brennkraftmaschine, einer Brennkammer einer Gasturbogruppe oder Feuerungsanlage
DE4316474A1 (de) * 1993-05-17 1994-11-24 Abb Management Ag Vormischbrenner zum Betrieb einer Brennkraftmaschine, einer Brennkammer einer Gasturbogruppe oder Feuerungsanlage
SE9304194L (sv) * 1993-12-17 1995-06-18 Abb Stal Ab Bränslespridare
US5461865A (en) * 1994-02-24 1995-10-31 United Technologies Corporation Tangential entry fuel nozzle
DE19531563A1 (de) * 1995-08-28 1997-03-06 Abb Management Ag Brenner
DE19545026A1 (de) * 1995-12-02 1997-06-05 Abb Research Ltd Vormischbrenner
DE59710093D1 (de) * 1997-10-08 2003-06-18 Alstom Switzerland Ltd Verfahren zur Verbrennung von gasförmigen, flüssigen sowie mittel-oder niederkalorischen Brennstoffen in einem Brenner
DE59710380D1 (de) * 1997-11-21 2003-08-07 Alstom Brenner für den Betrieb eines Wärmeerzeugers

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EP1559955A2 (fr) 2005-08-03
DE10029607A1 (de) 2001-12-20
EP1559955A3 (fr) 2005-10-26
DE50106117D1 (de) 2005-06-09

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