EP0794383B1 - Méthode d'exploitation d'une buse de pulvérisation par pression - Google Patents

Méthode d'exploitation d'une buse de pulvérisation par pression Download PDF

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Publication number
EP0794383B1
EP0794383B1 EP97810083A EP97810083A EP0794383B1 EP 0794383 B1 EP0794383 B1 EP 0794383B1 EP 97810083 A EP97810083 A EP 97810083A EP 97810083 A EP97810083 A EP 97810083A EP 0794383 B1 EP0794383 B1 EP 0794383B1
Authority
EP
European Patent Office
Prior art keywords
swirl
liquid
nozzle
atomized
pressure
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
EP97810083A
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German (de)
English (en)
Other versions
EP0794383A2 (fr
EP0794383A3 (fr
Inventor
Klaus Dr. Döbbeling
Peter Dr. Jansohn
Hans Peter Knöpfel
Christian Dr. Steinbach
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General Electric Switzerland GmbH
Original Assignee
Alstom SA
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Filing date
Publication date
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Publication of EP0794383A2 publication Critical patent/EP0794383A2/fr
Publication of EP0794383A3 publication Critical patent/EP0794383A3/fr
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Publication of EP0794383B1 publication Critical patent/EP0794383B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3478—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet the liquid flowing at least two different courses before reaching the swirl chamber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
    • B05B1/3431—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves
    • B05B1/3442—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves the interface being a cone having the same axis as the outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0408—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing two or more liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/10—Spray pistols; Apparatus for discharge producing a swirling discharge
    • 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
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/24—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space by pressurisation of the fuel before a nozzle through which it is sprayed by a substantial pressure reduction into a space
    • F23D11/26—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space by pressurisation of the fuel before a nozzle through which it is sprayed by a substantial pressure reduction into a space with provision for varying the rate at which the fuel is sprayed
    • 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, e.g. burner cooling means, noise reduction means
    • F23D11/38—Nozzles; Cleaning devices therefor
    • F23D11/383—Nozzles; Cleaning devices therefor with swirl means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
    • B05B1/3431—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves
    • B05B1/3447—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves the interface being a cylinder having the same axis as the outlet
    • 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 the field of combustion technology. It affects on Method for operating a pressure atomizing nozzle in a Gas turbine combustion chamber according to the generic term of the Claim 1.
  • Atomizer burners are known in which the for combustion oil is mechanically finely distributed. It will be fine Droplets of approx. 10 to 400 ⁇ m in diameter (oil mist) broken down, which are mixed with the combustion air in the Vaporize and burn the flame.
  • pressure atomizers see Lueger - Lexicon of Technology, Deutsche Verlags-Anstalt Stuttgart, 1965, volume 7, p.600
  • the oil gets into tangential slots a swirl chamber and leaves the nozzle through a nozzle bore. This ensures that the oil particles have two motion components, one axial and one radial.
  • the atomized oil forms one Cone of more or less large opening angle.
  • Swirl nozzles pressure atomizers
  • air-assisted atomizers the known types with a pressure up to approx. 100 bar are hardly suitable for this because they do not have a small angle of propagation allow the atomization quality to be restricted and the impulse of the drop spray is low.
  • the fuel pre-pressure drops due to the falling total fuel mass flow.
  • the atomizer required energy for pressure atomizers is over given the fuel admission pressure, so that in this load range the atomization quality deteriorates and the penetration depth of the fuel spray into the air flow through the low fuel pressure becomes lower.
  • the invention tries to avoid the disadvantages of the known prior art. It is based on the task of a method for operating a pressure atomizing nozzle with two To develop pressure swirl stages, with which a to the respective operating conditions meritet. Spray angle of the atomized Liquid is made possible.
  • this pressure atomizing nozzle in a gas turbine burner is said to be even with small ones Fuel mass flows (approx. 25% based on nominal load conditions) a sufficiently large nozzle pressure is generated, while the nozzle with large fuel mass flows (approx. 100-120% based on nominal load conditions) not too high Nozzle form should need. With the drop spray created in this way should over the entire load range of the gas turbine a low-pollutant and stable combustion are made possible.
  • the pressure atomizing nozzle comprises a nozzle body in which one Swirl chamber is formed, which has a nozzle bore communicates with an outside space and at least a first feed channel for the liquid to be atomized through which said liquid is supplied with swirl under pressure will and in the chamber at least another feed channel for part of the atomized Liquid or for a second liquid to be atomized flows through which said part of the liquid, or the second liquid is supplied under pressure and with swirl by doing that the pressure atomizer nozzle at full and Overload operation of the gas turbine via a main pressure swirl stage with low Swirl is operated by the entire atomizer Liquid over the first
  • the swirl chamber feed channel is swirled is generated, where there is a swirled flow which is then through the at least one nozzle bore got into the outside space and that the Pressure atomizer nozzle for partial and low-load operation of the gas turbine additionally over a further pressure swirl stage
  • the advantages of the invention include that thereby an adjustment of the pot spray (atomization quality, drop size, spray angle) to the respective load conditions is made possible.
  • a smooth switchover between the two is advantageous Stages, and depending on the load conditions, the operation of the nozzle with only one of the two stages.
  • the nozzle and the method for operating the nozzle are advantageously used in a premix burner of the double-cone design or a four-slot burner used, with a part in the vicinity of the nozzle the combustion air (approx. 3 to 7%) in the jacket flow around the nozzle to be led. This makes local detachment and recirculation areas avoided. It prevents the recirculation zone is moved inside the burner.
  • 1 to 3 show a first embodiment of the invention
  • 1 shows the pressure atomizing nozzle in a partial longitudinal section
  • FIGS. 2 and 3 two cross sections show in different levels.
  • the pressure atomizing nozzle comprises a nozzle body 30, consisting of from a first tube 31, which at its in the flow direction seen end closed by a conical cover 32 is. In the middle of the cover 32 is a nozzle bore 33 arranged, the longitudinal axis of which is designated 34. In the tube 31 is a second, a smaller outside diameter as the inside diameter of the first pipe 31 Tube 35 used, which extends up to the cover 32 and rests on it. The annular space 36 between the both tubes 31 and 35 are used to supply the or a part the liquid to be atomized 37 '.
  • the Pressure atomizer nozzle also with more or fewer slots 38 or feed channels 41a. Another is the same Distribution of the channels over the circumference possible.
  • the feed channels 41a are in the filler 40 made tangential, see above that the liquid to be atomized 37 both through the channels 38 and also swirls into the chamber 39 via the channels 41a arrives. It is important that the liquid to be atomized 37 only a slight twist that leads to a narrow spray cone angle ⁇ leads, receives when it flows through the channels 41a has, while the swirl of the liquid 37 after flowing through the channels 38 is larger and thus a larger one Spray cone angle ⁇ can be reached. In the embodiment according to Fig. 1 is shown that the nozzle of two to be atomized Liquids 37 and 37 'is applied.
  • Both Liquids 37, 37 'are the chamber 39 in this Case is a pure swirl chamber, swirl fed, where the liquid 37 is less swirled than the liquid 37 '. Due to the different twist, the spray cone angle ⁇ and thus the distribution of the liquid mass flow after the nozzle. Of course you can Issue of two liquids 37, 37 'also only one to be atomized Liquid 37 can be used for both twist stiffeners.
  • Fig. 4 shows a possible representation in a schematic representation Liquid supply system to the pressure atomizer nozzle.
  • a Pump 42 becomes the liquid to be atomized, in this case liquid fuel (oil) 12, in a pressure vessel 43 pumped.
  • a return valve 49 is used to set the pump admission pressure.
  • a shut-off valve 50 is arranged in the fuel line.
  • Two lines 44, 45 extend from the pressure vessel 43, whereby the line 44 the annular space 36 (and thus the swirl atomizer stage) feeds and line 45 with the supply channels 41a (swirl atomizer stage) communicates.
  • a control valve 46 and 47 arranged which a regulation allow the amount of liquid supplied.
  • one of the two valves can also be used 46, 47 must be completely closed, so that in this case only one of the two atomizing stages of the nozzle is in operation. Smooth switching is possible between the two stages.
  • this fuel supply system should several burners, for example a gas turbine combustion chamber be supplied with fuel.
  • the one shown Circuit has the advantage of regulating the two atomizer stages only the two valves 46, 47, i.e. just one Control valve per stage are necessary.
  • FIG. 5 shows another embodiment variant analogous to FIG. 4.
  • the pressure atomizing nozzle is fed with water 51 via a feed line 44 and with oil 12 via a feed line 45.
  • a pump 42 is arranged in each of the lines 44 and 45 and a shut-off valve 50 is arranged downstream, with which the lines 44 and 45 can optionally be closed.
  • the amount of the liquids 12, 51 to be atomized is regulated by means of the control valves 46, 47. If, as indicated in FIG.
  • FIG. 6 shows the distribution of the fuel mass flow m in BS as a function of the radius R of the spray in a pressure atomizing nozzle according to the embodiment variant shown in FIG. 1 at a certain distance from the nozzle.
  • the pressure atomizing nozzle according to the invention can, for example installed in a gas turbine burner and operated as follows become:
  • a pressure atomizing nozzle according to FIG. 1 If a pressure atomizing nozzle according to FIG. 1 is used, then with full and overload operation of the gas turbine, the entire Fuel to be atomized via at least one first feed channel 41a (four feed channels 41a according to FIG. 1) of the swirl chamber 39 fed with little twist, where there is a twisted Flow is generated, which then through the Nozzle bore 33 reaches the outside. Due to the low Twist, a narrow spray cone angle ⁇ is realized, which at high pressures for a fine atomization of the fuel leads. In the case of partial and low-load operation, an is also added Part of the fuel to be atomized over the minimum a further feed channel 38 (four feed channels according to FIG. 1) 38) is more swirled in the chamber 39.
  • the pressure atomizing nozzle according to the invention can, for example in a premix burner of the double-cone type, the principal of which Structure is described in EP 0 321 809 B1 become.
  • Fig. 7 shows a perspective view of the double-cone burner with integrated premixing zone.
  • the two partial cone bodies 1, 2 are with respect to their longitudinal symmetry axes 1b, 2b arranged radially offset from one another. This creates on both sides of the partial cone body 1, 2 in opposite Inflow arrangement each tangential air inlet slots 19, 20, through which the combustion air 15 in the Interior 14 of the burner, i.e. in that of the two partial cone bodies 1, 2 formed cone cavity flows.
  • the partial cone bodies 1, 2 expand in a straight line in the direction of flow, i.e. they have a constant angle ⁇ with the burner axis 5 on.
  • the two partial cone bodies 1, 2 each have one cylindrical initial part 1a, 2a, which is also offset run.
  • the pressure atomizing nozzle 3 according to the invention, which is roughly in the narrowest cross section of the conical interior 14 of the burner is arranged.
  • the liquid fuel 12 is by means of atomized the nozzle 3 in the manner described above.
  • spray cone angles ⁇ there are different spray cone angles ⁇ .
  • the Fuel spray 4 is in the interior 14 of the burner from the through the air inlet slots 19, 20 tangentially into the Combustion air flow 15 flowing into the burner, the mixture is ignited only at the burner outlet, the flame passing through in the area of the burner mouth a backflow zone 6 is stabilized.
  • the two partial cone bodies 1, 2 have along the air inlet slots 19, 20 each have a fuel feed line 8, 9, which are provided on the long side with openings 17 through which another fuel 13 (gaseous or liquid) flow can.
  • This fuel 13 is the tangential Air inlet slots 19, 20 in the interior of the burner flowing combustion air 15 admixed, which by the Arrows 16 is shown. A mixed operation of the burner Via the nozzle 3 and the fuel feeds 8, 9 is possible.
  • a front plate 10 with openings is arranged on the combustion chamber side 11, through which, if necessary, dilution air or cooling air are fed to the combustion chamber 22. It also ensures this air supply ensures that flame stabilization on Output of the burner takes place. There is a stable one Flame front 7 with a backflow zone 6.
  • baffles 21a, 21b can be around a pivot point, for example 23 can be opened or closed, so that the original gap size of the tangential air inlet slots 19, 20 is changed.
  • the Burners can also be operated without these baffles 21a, 21b.
  • a channel around the nozzle 3 24 is arranged through which a jacket air flow 15a as Purge air flows.
  • the jacket air flow 15a is about 3 to 7% of the combustion air flow 15.
  • a burner can be operated, essentially consisting of a swirl generator 100 for a combustion air flow 15 and from means for injecting a fuel, a mixing section at the downstream of the swirl generator 100 220 is arranged and this within a first Section part 200 in the flow direction transition channels 201 for transferring one in the swirl generator 100 formed flow in the downstream of the transition channels 201 downstream flow cross section 18 of the mixing section 220, wherein the means for injecting the fuel is a pressure atomizing nozzle according to the invention, which according to one of the methods described above is operated.
  • the Swirl generator 100 is preferably a conical structure, the tangential multiple (e.g.
  • This combustion air flow 15 wraps around the fuel drop spray 4, previously by atomizing the liquid Fuel 12 in the two-stage pressure atomizer nozzle 3 was formed.
  • the flow that is formed is based on a Transition geometry provided downstream of the swirl generator 100 (Transition channels 201) seamlessly into a transition piece 200 transferred, which is extended by a tube 18. Both Parts form the mixing section 220 to which the downstream side is located connects the actual combustion chamber, not shown here.
  • the mixing section allows very good premixing of the fuel with the combustion air low-loss flow and prevented by a A maximum of axial speed on the axis a flashback the flame from the combustion chamber.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles For Spraying Of Liquid Fuel (AREA)
  • Nozzles (AREA)

Claims (4)

  1. Méthode d'exploitation d'une buse de pulvérisation par pression dans une chambre de combustion de turbine à gaz, comprenant un corps de buse (30), dans lequel est réalisée une chambre de tourbillonnement (39), qui est connectée par un alésage de buse (33) à une chambre extérieure, et qui présente au moins un premier conduit d'amenée (41a) pour le liquide à pulvériser (37), à travers lequel ledit liquide (37) est acheminé par voie tourbillonnaire sous pression, et au moins un conduit d'amenée supplémentaire (38) pour une partie du liquide à pulvériser (37) ou pour un deuxième liquide à pulvériser (37') débouchant dans la chambre (39), à travers lequel ladite partie du liquide (37) ou le deuxième liquide (37') est acheminé sous pression et avec un mouvement tourbillonnaire, caractérisée en ce que la buse de pulvérisation par pression, lors du fonctionnement à pleine charge ou en surcharge de la turbine à gaz, fonctionne sur un étage principal de tourbillonnement sous pression avec un faible tourbillonnement, la totalité du liquide à pulvériser (37) étant acheminée sous forme tourbillonnaire par le biais du premier conduit d'amenée (41a) à la chambre de tourbillonnement (39), un écoulement tourbillonnaire y étant généré, lequel arrive ensuite par l'au moins un alésage de buse (33) dans la chambre extérieure, et en ce que la buse de pulvérisation par pression, lors du fonctionnement en charge partielle ou à faible charge de la turbine à gaz, fonctionne en outre sur un autre étage de tourbillonnement sous pression avec un plus gros tourbillonnement, une partie du liquide à pulvériser (37) ou le deuxième liquide à pulvériser (37') étant acheminé à la chambre (39) sous forme tourbillonnaire plus intense par le biais de l'au moins un conduit d'amenée supplémentaire (38), et un écoulement plus fortement tourbillonnaire y étant généré, lequel arrive ensuite par l'au moins un alésage de buse (33) dans la chambre extérieure, la proportion du liquide plus fortement tourbillonnaire (37, 37') acheminé par l'étage de tourbillonnement supplémentaire augmentant au fur et à mesure que le débit massique du liquide total diminue.
  2. Méthode selon la revendication 1, caractérisée en ce que l'on commute par glissement entre les deux étages.
  3. Méthode selon la revendication 1, caractérisée en ce que les deux étages fonctionnent simultanément et avec un débit variable.
  4. Méthode selon la revendication 1, caractérisée en ce que seulement l'un des deux étages est en fonctionnement.
EP97810083A 1996-03-05 1997-02-20 Méthode d'exploitation d'une buse de pulvérisation par pression Expired - Lifetime EP0794383B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19608349 1996-03-05
DE19608349A DE19608349A1 (de) 1996-03-05 1996-03-05 Druckzerstäuberdüse

Publications (3)

Publication Number Publication Date
EP0794383A2 EP0794383A2 (fr) 1997-09-10
EP0794383A3 EP0794383A3 (fr) 1998-04-01
EP0794383B1 true EP0794383B1 (fr) 2002-11-06

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Application Number Title Priority Date Filing Date
EP97810083A Expired - Lifetime EP0794383B1 (fr) 1996-03-05 1997-02-20 Méthode d'exploitation d'une buse de pulvérisation par pression

Country Status (5)

Country Link
US (1) US5934555A (fr)
EP (1) EP0794383B1 (fr)
JP (1) JPH09327641A (fr)
CN (1) CN1164442A (fr)
DE (2) DE19608349A1 (fr)

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DE19713377A1 (de) * 1997-04-01 1998-10-15 Siemens Ag Düse, Verwendung einer Düse und Verfahren zur Eindüsung eines ersten Fluids in ein zweites Fluid
DE19730617A1 (de) * 1997-07-17 1999-01-21 Abb Research Ltd Druckzerstäuberdüse
EP0911582B1 (fr) * 1997-10-27 2003-12-10 ALSTOM (Switzerland) Ltd Procédé d'utilisation d'un brûleur à prémélange et brûleur à prémélange
ATE234444T1 (de) 1997-10-27 2003-03-15 Alstom Switzerland Ltd Verfahren zum betrieb eines vormischbrenners
DE59709924D1 (de) 1997-12-22 2003-05-28 Alstom Switzerland Ltd Zweistufige Druckzerstäuberdüse
EP0924461B1 (fr) * 1997-12-22 2003-04-16 ALSTOM (Switzerland) Ltd Buse de pulvérisation par pression à deux étages
DE19811736A1 (de) * 1998-03-18 1999-09-23 Guenter Slowik Drallerzeuger für Düsen und Verfahren zum Verändern der Drallbewegung
DE10008389A1 (de) * 2000-02-23 2001-08-30 Guenter Slowik Verfahren und Leitungssystem zur Beeinflussung des Tropfenspektrums von fluiden Stoffen bei deren Zerstäubung
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JPH09327641A (ja) 1997-12-22
US5934555A (en) 1999-08-10
DE19608349A1 (de) 1997-09-11

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