EP2710268B1 - Gasturbinendiffusorblasverfahren und entsprechender diffusor - Google Patents

Gasturbinendiffusorblasverfahren und entsprechender diffusor Download PDF

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Publication number
EP2710268B1
EP2710268B1 EP12728695.3A EP12728695A EP2710268B1 EP 2710268 B1 EP2710268 B1 EP 2710268B1 EP 12728695 A EP12728695 A EP 12728695A EP 2710268 B1 EP2710268 B1 EP 2710268B1
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EP
European Patent Office
Prior art keywords
diffuser
air
blades
blowing
upstream
Prior art date
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Active
Application number
EP12728695.3A
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English (en)
French (fr)
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EP2710268A1 (de
Inventor
Jérôme PORODO
Laurent Tarnowski
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.)
Safran Helicopter Engines SAS
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Safran Helicopter Engines SAS
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Priority to PL12728695T priority Critical patent/PL2710268T3/pl
Publication of EP2710268A1 publication Critical patent/EP2710268A1/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • F04D29/444—Bladed diffusers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
    • F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
    • F04D29/684—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps by fluid injection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/02—Surge control
    • F04D27/0207—Surge control by bleeding, bypassing or recycling fluids
    • F04D27/023—Details or means for fluid extraction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/02—Surge control
    • F04D27/0207—Surge control by bleeding, bypassing or recycling fluids
    • F04D27/0238—Details or means for fluid reinjection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
    • F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
    • F04D29/682—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps by fluid extraction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00—Components
    • F05D2240/10—Stators
    • F05D2240/12—Fluid guiding means, e.g. vanes
    • F05D2240/122—Fluid guiding means, e.g. vanes related to the trailing edge of a stator vane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/50—Inlet or outlet
    • F05D2250/52—Outlet

Definitions

  • the invention relates to a method of blowing air into a compression stage diffuser of a gas turbine, particularly in centrifugal or mixed type compressors.
  • mixed compressor it is to hear a structured compressor output wheel so that the air flow is at an angle between 0 and 90 ° relative to a radial direction.
  • the invention also relates to a compressor diffuser adapted to implement such a method.
  • the field of the invention is that of the operation of the compressors and the improvement of their performance, in particular the pumping margin.
  • the performance is particularly sensitive to the flow of air from the compressor impeller.
  • the function of the diffuser is to straighten this flow in order to optimize the transformation of the dynamic pressure of the air into static pressure.
  • a diffuser In general, a diffuser consists of blades inclined in a space formed between two flanges. The deflection carried out by the blades can cause air detachments on the intrados or extrados of the blades. Such detachments can lead to the stalling of air streams and, if the phenomenon is amplified, pumping.
  • the invention aims to combat more effectively the separation of the boundary air layer by actively stabilizing this layer.
  • the invention provides for re-energizing the boundary layer with air at higher pressure by a coupling blow / suction.
  • the subject of the present invention is a method of blowing air into a compression stage diffuser of a gas turbine compressor as defined by claim 1.
  • a diffuser comprises two flanges enclosing a plurality circumferential blades. The flow of air along the blades is from a leading edge to a trailing edge of the diffuser.
  • a coupling of an air injection into the airstream upstream of the diffuser is performed with a sample of air coming from the downstream vein by an air intake made on the side of the edges of the airstream. attack, upstream with respect to the trailing edges located downstream.
  • a blowing of the injected air occurs in the upstream vein downstream by this air intake.
  • the injection is oriented so that the injected air blows into the vein along the blades and / or flanges. A sample of this air is then made by suction in the vein on the side of the trailing edges, so that the pressure of the air taken is substantially greater than the air pressure flowing at the sampling.
  • the transition from a laminar boundary layer of the airflow to a turbulent layer is initiated and / or enhanced by increasing its energy level.
  • the injection can be oriented from 0 ° to about ⁇ 90 ° with respect to a normal injection face.
  • the air is injected as tangentially as possible to the injection face in the direction of the air flow.
  • Such blowing thus makes it possible to "stabilize" a boundary layer by rendering it turbulent when it is laminar, and thus to delay delamination because a turbulent boundary layer is intrinsically more stable than a laminar boundary layer.
  • this energy supply delays the onset of detachments.
  • the energy supply can also allow the bonding of the boundary layer.
  • the phenomenon of re-energization according to the invention can be reinforced by the effect "coanda" which appears when an air jet is close to a convex wall. This effect results in an attraction of the fluid towards the wall. This coanda effect can be maximized depending on the speed and the angle of ejection of the air at the sampling level.
  • the method according to the invention makes provision for withdrawing the air either downstream from the diffuser, in a subsequent grid of the stage or in a subsequent stage, or in the diffuser concerned, in particular near the trailing edge of the blades.
  • the invention also relates to a diffuser capable of implementing this method as defined by claim 7.
  • a centrifugal or mixed compressor type diffuser comprises two flanges enclosing a plurality of circumferential vanes.
  • At least one transverse upstream passage is made in the lower and / or upper surfaces of the blades and / or in a flange at at least one point of injection of air into the vein, located in the leading edge zone of the upstream side of the diffuser, according to the compression direction of the gas turbine.
  • This passage is able to form a coupling injection / sampling in the vein by recirculation in the diffuser and / or along the flange off diffuser.
  • the intake of air at at least one point in the trailing edge zone of the downstream side of the diffuser is achieved by suction in at least one groove formed along a flank of the blades and / or on the internal face of the flange.
  • downstream and upstream describe positioning with respect to the flow of airflows.
  • identical reference signs refer to the passages of the description in which the elements corresponding to these reference signs are defined.
  • an air flow F is first drawn into a fresh air intake sleeve 2, then compressed between the blades 3 of a centrifugal compressor wheel 4 and a cover 9.
  • the turbine is of axial symmetry around the X'X axis.
  • the compressor 5 is centrifuged here and the compressed flow F then exits radially from the impeller 4.
  • the flow exits inclined at an angle between 0 ° and 90 ° relative to a radial direction, perpendicular to the axis X'X.
  • the flow F then passes through a diffuser 6, formed at the outlet of the compressor 4, to be straightened and conveyed to the combustion chamber inlet channels 7.
  • the diffuser 6 consists of a plurality of curved blades 60, formed between two flanges at the periphery of the wheel 4 - here radially - and therefore of revolution about the axis X'X.
  • the figure 2a illustrates more precisely a perspective view of the diffuser 6 with blades 60 secured to two flanges 61.
  • each blade 60 has, in known manner, a so-called extrados face 6e and a so-called intrados face 6i.
  • these upper and lower faces 6i 6i extend longitudinally and substantially parallel to a mean surface Fm of the blade.
  • these faces are connected by a tapered leading edge 6a and a rounded trailing edge 6f, in the direction of flow of the air flows.
  • each blade 60 has plane flanks 6p integral with the flanges 61.
  • the blades have a change in thickness between their flanks 6p, sufficient to form grooves as described below. This thickness can reach several millimeters over 20 to 100% of the mean curvilinear abscissa Sm of the blade 60 along the average surface Fm.
  • a longitudinal groove 62 now appears.
  • This groove opens on the trailing edge 6f, without opening on the leading edge 6a.
  • This groove is made by machining the metal alloy material of the sidewall 6p of each vane 60, forming longitudinal walls 65, substantially parallel to the intrados face 6i and extrados 6e, and bottom 66 parallel to the sidewalls 6p.
  • the blade 60 is provided with a series of orifices 63 opening into the air duct V between the blades 60 via cylindrical blowing cavities 64.
  • the flows F1 may also or alternatively lead to the upper surface 6e.
  • the orifices 63 are aligned parallel to the leading edges 6a and leakage 6f.
  • These air blowing cavities 64 are inclined at an angle of between 0 and 90 ° downstream, for example 30 °, relative to the mean curvilinear abscissa Sm of the blade. Flows F1 open through the orifices 63 and blow in the vein V downstream. Part of these flows as well as other flows originating from adjacent blades are sucked, in the form of a flow Fi, from the vein V to the groove 62 in the region of the trailing edge 6f (at the trailing edge 6f in the example shown).
  • Flows Fi are then injected by suction into the groove 62 of the blade 60 on the upstream side where the pressure is lower.
  • Recirculation of the air flows via the groove between the trailing edge 6f and attacking zones 6a performs a suction / blowing coupling.
  • the re-energizing of the incoming air flows then makes it possible to stabilize these flows and to prevent their detachment or possibly to pick them up again if the detachment is initiated.
  • Suction at the trailing edge, or in areas close to the trailing edge also makes it possible to attenuate - or even eliminate - the potentially unstuck areas.
  • the cavities may open on the extrados side 6e, and / or these cavities may be replaced by one or more slots formed on a sidewall 6p.
  • Furrows can also be machined on the two opposite sidewalls 6p, retaining a central bottom portion 66 of the grooves.
  • FIG. 4a and 4b a second example of a dawn air sampling and blowing diffuser is illustrated by identical views that the Figures 3a and 3b .
  • the Figures 4a and 4b repeat the reference signs of the Figures 3a and 3b , which signs refer to the same elements already defined in the preceding passages, with reference to the Figures 3a and 3b .
  • the difference with the first example of the diffuser is the air flow suction means Fi in the groove 62 at the trailing edge 6f.
  • the flows Fi are reinjected via cavities 74 made in the intrados 6i on the trailing edge 6f side and opening into the groove 62.
  • the suction cavities are, in the illustrated example, substantially transverse. Alternatively, they may be inclined at an angle close to ⁇ 90 ° to the normal at curvilinear abscissa Sm of blade 60 as a function of configurations. They can also be replaced by slots such as blowing cavities 64.
  • Diagrams 5a to 5c relate to vanes 60 of grooves 62a to 62c respectively of constant width "e” and opening on the trailing edge 6f (groove 62a, diagram 5a), or of width "e” linearly variable as a function of the mean curvilinear abscissa Sm of the blade 60 (grooves 62b and 62c, diagrams 5b and 5c).
  • the groove may be opening (grooves 62a and 62c, diagrams 5a and 5c) or non-opening (groove 62b, diagram 5b) on the trailing edge 6f.
  • the trailing edge 6f When the groove is opening, the trailing edge 6f then has flanges 67 shaped to optimize the suction of air.
  • suction cavities 74 and injection 64 can lead to the same faces: intrados 6i (diagrams 5d and 5e) or extrados 6e (diagrams 5f and 5g). They can also lead to different faces: extrados 6e for the suction cavities 74 and intrados 6i for the reinjection cavities 64 (diagram 5h), or intrados 6i for the suction cavities 74 and extrados 6th for the reinjection cavities 64 (Figure 5i). Diagrams 5d to 5i show a groove 62b of linearly increasing width and non-opening.
  • the cavities or slots can be positioned and uncorked at any point along the length of the groove, with angles that can tend to ⁇ 90 ° from the normal to the curvilinear abscissa of the blade.
  • the grooves may, in general, extend over the entire length of the blade 60 or a minimum length, close to 0% of the total length.
  • grooves may be machined on the same sidewall 6p, for example two grooves, as shown in the diagrams 5j and 5k.
  • the grooves 6k and 6k' are substantially parallel along the blade 60.
  • FIG. 6a illustrates a front view of a third example of diffuser 60 according to the invention.
  • the air intake - always performed in the trailing edge region 6f of the diffuser 6 (arrow F2) is achieved by suction through an opening 70 made radially in the flange 61.
  • the air flows F3 are redirected upstream in a housing housing 71 substantially parallel to the diffuser 6, the housing 71 and the diffuser 6 having the flange 61 as a common wall. Blowing is done by reinjection flows F4 along the inner face 61i of the flange 61 through holes 72 formed in the region of the leading edge 6a of the diffuser 6.
  • the holes 72 are inclined relative to the flange 61 as it appears more precisely with reference to the enlarged schematic view of the figure 6b .
  • the diffusion of the air flow F4 is thus reinjected onto the face 61i of the flange 61 situated on the inside of the diffuser 6.
  • the re-energization of the air drop zones with a small amount of movement is then favored at the leading edge. of the broadcaster.
  • the cavities and slots are not necessarily cylindrical or partially cylindrical but can vary in section: prismatic, oblong, etc.
  • the transit housing can be formed in the housing or in the hub of the diffuser.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (11)

  1. Luftblasverfahren in einem Verdichtungsstufendiffusor (6) eines Verdichters (5) einer Gasturbine (1), wobei der Diffusor (6) zwei Flansche (61) enthält, die eine Vielzahl von umlaufenden Schaufeln (60) umschließen, und die Strömung der Luft (F) entlang der Schaufeln (60) von einer Anströmkante (6a) zu einer Abströmkante (6f) des Diffusors (6) erfolgt, ein Koppeln einer Lufteinspritzung (F1) in den Luftstrom (V) stromaufwärts des Diffusors (6) mit einer Luftentnahme (Fi, F4), die aus dem stromabwärtigen Luftstrom (V) stammt durch einen Lufteinlass (64) seitens der Anströmkanten (6a), die in Bezug auf die stromabwärts gelegenen Abströmkanten (6b) stromaufwärts liegen, durch stromaufwärtiges und stromabwärtiges Blasen der in den Strom (V) eingespritzten Luft (F1) durchgeführt wird, wobei die Einspritzung so ausgerichtet ist, dass die eingespritzte Luft in den Strom (V) entlang der Schaufeln (60) und/oder der Flansche (61), und durch Entnahme dieser Luft (Fi, F4) durch Ansaugen in den Strom (V) seitens der Abströmkanten (6f) bläst und dadurch gekennzeichnet, dass das Verfahren die Einspritzung in jede Schaufel (60) gefolgt von einer Rezirkulation bis zum Lufteinlass (64) an der Anströmkante (6a) der Schaufel (60) zum Durchführen einer Ansaug-/Blas-Kupplung umfasst, sodass der Druck der entnommenen Luft (Fi, F4) höher als der Luftdruck der Luft (F) ist, die auf Entnahmehöhe strömt.
  2. Blasverfahren nach Anspruch 1, wobei die Luft entweder stromabwärts des Diffusors (6), in einem nachfolgenden Gitter der Stufe oder in einer nachfolgenden Stufe des Verdichters (5), oder in dem betroffenen Diffusor (6), insbesondere in der Nähe der Abströmkante der Schaufeln (60) entnommen wird.
  3. Blasverfahren nach Anspruch 1, wobei die Luftentnahme an den inneren Wölbungsseiten (6i) und/oder äußeren Wölbungsseiten (6e) der Schaufeln (60) und das Blasen an den Schaufeln (60) durchgeführt wird.
  4. Blasverfahren nach Anspruch 1, wobei die Entnahme an den Nabenflanschen (61) und/oder dem Gehäuse des Diffusors (6) und das Blasen an den Flanschen (61) durchgeführt wird.
  5. Blasverfahren nach Anspruch 1, wobei die Entnahme an den Schaufeln (60) und das Blasen an den Flanschen (61) durchgeführt wird.
  6. Blasverfahren nach Anspruch 1, wobei die Entnahme an den Flanschen und das Einspritzen an den Beschaufelungen durchgeführt wird.
  7. Verdichterdiffusor des Zentrifugaltyps oder gemischten Typs, dadurch gekennzeichnet, dass der Verdichterdiffusor zum Ausführen des Blasverfahrens nach einem der vorstehenden Ansprüche geeignet ist, wobei zwei Flansche (61) eine Vielzahl von umlaufenden Schaufeln (60) umschließen, ein stromaufwärtiger transversaler Durchgang (64) in den inneren Wölbungsseiten (6i) und/oder äußeren Wölbungsseiten (6e) der Schaufeln (60) und/oder in einem Flansch (61) in mindestens einem Lufteinspritzpunkt (64, 70) in dem Strom (V) durchgeführt wird, der sich in der Anströmkantenzone (6a) auf der stromaufwärtigen Seite des Diffusors (6) gemäß der Verdichtungsrichtung der Gasturbine (1) befindet, der dazu geeignet ist, eine Einspritzung/Entnahme-Kupplung in dem Strom (V) durch eine Rezirkulation in dem Diffusor (6) und/oder entlang des Flansches (61) außerhalb des Diffusors zu bilden, wobei die Luftentnahme in mindestens einem Punkt (Fi, 74, 72) in der Zone der Abströmkanten (6f) auf der stromabwärtigen Seite des Diffusors (6) durch eine Ansaugung in mindestens einer entlang einer Flanke (6p) der Schaufeln (60) und/oder an der Innenfläche (61i) des Flansches (61) gebildeten Rille (62; 62a bis 62c; 6j, 6j'; 6k, 6k') durchgeführt wird.
  8. Verdichterdiffusor nach dem vorstehenden Anspruch, wobei die Einspritzung durch mindestens einen stromaufwärtigen transversalen Durchgang (64, 70) in den inneren Wölbungsseiten (6i) und/oder äußeren Wölbungsseiten (6e) der Schaufeln (60) durchgeführt wird, die in der Rille (62; 62a bis 62c; 6j, 6j'; 6k, 6k') der Schaufeln (60) und/oder in der Innenfläche (61i) des Flansches (61) mündet.
  9. Verdichterdiffusor nach einem der Ansprüche 7 oder 8, wobei die stromabwärtigen und stromaufwärtigen transversalen Durchgänge durch Hohlräume (64, 74) und/oder Schlitze gebildet sind.
  10. Verdichterdiffusor nach dem vorstehenden Anspruch, wobei die Durchgänge (64, 74) in Bezug auf die Normale eine geneigte Mittelseite auf der Seite, auf der sie mündet, aufweisen, mit einem Winkel im Bereich zwischen 0 und ±90°, vorzugsweise einem Winkel nahe 90° in der Strömungsrichtung für die stromaufwärtigen Durchgänge (64) und nahe 0° für die stromabwärtigen Durchgänge (74).
  11. Verdichterdiffusor nach einem der Ansprüche 7 bis 10, wobei die Durchgänge (64, 74) auf der ganzen Länge jeder Rille (62; 62a bis 62c; 6j, 6j'; 6k, 6k') positioniert sein können, seitens der äußeren Wölbungsseiten (6e) und/oder inneren Wölbungsseiten (6i), mit einem stromaufwärtigen Durchgang (74) und einem stromabwärtigen Durchgang (64) pro Rille.
EP12728695.3A 2011-05-16 2012-05-15 Gasturbinendiffusorblasverfahren und entsprechender diffusor Active EP2710268B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL12728695T PL2710268T3 (pl) 2011-05-16 2012-05-15 Sposób wdmuchiwania do dyfuzora turbiny gazowej i odpowiadający mu dyfuzor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1154211A FR2975451B1 (fr) 2011-05-16 2011-05-16 Procede de soufflage dans un diffuseur de turbine a gaz et diffuseur correspondant
PCT/FR2012/051087 WO2012156640A1 (fr) 2011-05-16 2012-05-15 Procédé de soufflage dans un diffuseur de turbine à gaz et diffuseur correspondant

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EP2710268A1 EP2710268A1 (de) 2014-03-26
EP2710268B1 true EP2710268B1 (de) 2019-03-06

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US (1) US9618008B2 (de)
EP (1) EP2710268B1 (de)
JP (1) JP6100758B2 (de)
KR (1) KR101885402B1 (de)
CN (1) CN103534488B (de)
CA (1) CA2835355C (de)
FR (1) FR2975451B1 (de)
PL (1) PL2710268T3 (de)
RU (1) RU2618712C2 (de)
WO (1) WO2012156640A1 (de)

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US9777741B2 (en) * 2014-11-20 2017-10-03 Baker Hughes Incorporated Nozzle-shaped slots in impeller vanes
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FR2975451A1 (fr) 2012-11-23
US20140105723A1 (en) 2014-04-17
KR101885402B1 (ko) 2018-09-10
RU2618712C2 (ru) 2017-05-11
JP2014513778A (ja) 2014-06-05
PL2710268T3 (pl) 2019-07-31
FR2975451B1 (fr) 2016-07-01
US9618008B2 (en) 2017-04-11
CN103534488B (zh) 2016-08-17
RU2013153402A (ru) 2015-06-27
CA2835355C (fr) 2019-04-09
CN103534488A (zh) 2014-01-22
CA2835355A1 (fr) 2012-11-22
JP6100758B2 (ja) 2017-03-22
EP2710268A1 (de) 2014-03-26
WO2012156640A1 (fr) 2012-11-22
KR20140043364A (ko) 2014-04-09

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