EP4599171A1 - Traitement de carter non axisymetrique a ouverture pilotee - Google Patents
Traitement de carter non axisymetrique a ouverture piloteeInfo
- Publication number
- EP4599171A1 EP4599171A1 EP23793425.2A EP23793425A EP4599171A1 EP 4599171 A1 EP4599171 A1 EP 4599171A1 EP 23793425 A EP23793425 A EP 23793425A EP 4599171 A1 EP4599171 A1 EP 4599171A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- casing
- openings
- movable ring
- slots
- compressor
- 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.)
- Pending
Links
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
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/56—Fluid-guiding means, e.g. diffusers adjustable
- F04D29/563—Fluid-guiding means, e.g. diffusers adjustable specially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
- F01D17/12—Final actuators arranged in stator parts
- F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
- F01D17/141—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
-
- 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
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
- F04D29/524—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps shiftable members for obturating part of the flow path
-
- 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
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
- F04D29/526—Details of the casing section radially opposing blade tips
-
- 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
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
- F04D29/545—Ducts
-
- 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
- F04D29/685—Inducing localised fluid recirculation in the stator-rotor interface
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
-
- 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
- F05D2250/10—Two-dimensional
- F05D2250/18—Two-dimensional patterned
- F05D2250/182—Two-dimensional patterned crenellated, notched
-
- 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
- F05D2260/00—Function
- F05D2260/30—Retaining components in desired mutual position
- F05D2260/38—Retaining components in desired mutual position by a spring, i.e. spring loaded or biased towards a certain position
-
- 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
- F05D2270/00—Control
- F05D2270/01—Purpose of the control system
- F05D2270/10—Purpose of the control system to cope with, or avoid, compressor flow instabilities
- F05D2270/101—Compressor surge or stall
Definitions
- Turbomachine compressors are made up of rotating blades inside a casing which seals the air flow with the outside of the engine.
- the internal surface of the casing can be locally treated by digging cavities arranged in the thickness of the casing facing the blades.
- Documents FR 2 989 742, GB 2 408 546 and US 2016/153465 provide examples of casing treatment.
- the slots of the casing treatment can be opened or closed using the movable ring.
- This makes it possible to have active crankcase treatment when operability conditions require it, for example during takeoff, to avoid the pumping phenomenon and to have inactive crankcase treatment when the compressor is no longer loaded, for example. example at cruising speed, to favor the efficiency of the compressor.
- the invention makes it possible to control the opening of the casing treatment.
- the casing also comprises at least one spring assembling the movable ring to the casing configured so that the openings of the casing are open when the spring is at rest.
- the camshaft makes it possible to move the movable ring along the circumference of the casing, and more particularly the cam makes it possible to move the movable ring by an amplitude at least equal to the width of an opening in the casing so as to to completely open or close the openings of the crankcase, and therefore so as to completely open or close the slots of the crankcase treatment.
- the actuator can play the same role as the camshaft, and therefore allows the movable ring to be moved along the circumference of the crankcase to be able to close or open the slots in the crankcase treatment.
- it makes it possible to move the movable ring by an amplitude at least equal to the width of an opening in the casing.
- the dimensions of the slots of the movable ring and of the openings of the casing are equal.
- Figure 2B represents, schematically and partially, the open slots of the compressor casing treatment of Figure 1.
- Each opening of the casing 100 has a width greater than or equal to the width of the associated slot of the movable ring 120 (or slot facing said opening), and each opening of the casing 100 has a length greater than or equal to the length of the associated slot of the movable ring 120 (or slot facing said opening). This ensures that the openings of the casing 100 are completely open when it is desired to activate the casing treatment.
- the distance between each opening of the casing 100 is greater than or equal to the width of the associated slot of the movable ring 120. This makes it possible to guarantee that the openings of the casing 100 are completely closed when it is desired to deactivate the treatment of carter.
- the slots 202 of the movable ring 220 have the same width and length as the openings 201 of the casing 200.
- the distance between the openings 201 of the casing 200 is identical to the distance between the slots 202 of the movable ring 220.
- the casing 300 comprises openings dug or cut in the thickness of the casing 300 from the internal face 3001 of the casing 300.
- the openings are arranged next to each other along the crankcase circumference 300.
- the openings in the casing can all be identical.
- the casing can be in one piece.
- the number of openings of the casing (and therefore of the movable ring) is between 40 and 850, for example between 45 and 810, for example between 60 and 210.
- the treatment The casing requires between 3 and 8 slots per rotor blade and a rotor has between 15 and 90 blades. This range of values therefore makes it possible to cover all possibilities.
- the casing and the movable ring can be made of the same material. This allows both parts to undergo the same thermal and mechanical stresses and therefore to ensure that the opening or closing Closing the crankcase treatment will always be possible, even in the event of thermal expansion.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2210149A FR3140406A1 (fr) | 2022-10-04 | 2022-10-04 | Traitement de carter non axisymétrique à ouverture pilotée |
| PCT/FR2023/051501 WO2024074777A1 (fr) | 2022-10-04 | 2023-09-28 | Traitement de carter non axisymetrique a ouverture pilotee |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4599171A1 true EP4599171A1 (fr) | 2025-08-13 |
Family
ID=84370301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23793425.2A Pending EP4599171A1 (fr) | 2022-10-04 | 2023-09-28 | Traitement de carter non axisymetrique a ouverture pilotee |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12546336B2 (fr) |
| EP (1) | EP4599171A1 (fr) |
| CN (1) | CN119923526B (fr) |
| FR (1) | FR3140406A1 (fr) |
| WO (1) | WO2024074777A1 (fr) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090041576A1 (en) * | 2007-08-10 | 2009-02-12 | Volker Guemmer | Fluid flow machine featuring an annulus duct wall recess |
| US20160169017A1 (en) * | 2014-12-16 | 2016-06-16 | General Electric Company | Circumferentially varying axial compressor endwall treatment for controlling leakage flow therein |
| US10539154B2 (en) * | 2014-12-10 | 2020-01-21 | General Electric Company | Compressor end-wall treatment having a bent profile |
| US11572897B1 (en) * | 2021-07-13 | 2023-02-07 | Pratt & Whitney Canada Corp. | Compressor with casing treatment |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5694767A (en) * | 1981-11-02 | 1997-12-09 | General Electric Company | Variable slot bypass injector system |
| JP3872966B2 (ja) * | 2001-06-29 | 2007-01-24 | 株式会社日立プラントテクノロジー | 軸流形流体機械 |
| GB2408546B (en) | 2003-11-25 | 2006-02-22 | Rolls Royce Plc | A compressor having casing treatment slots |
| US7581382B2 (en) * | 2005-04-28 | 2009-09-01 | United Technologies Corporation | Gas turbine engine air valve assembly |
| US20080044273A1 (en) * | 2006-08-15 | 2008-02-21 | Syed Arif Khalid | Turbomachine with reduced leakage penalties in pressure change and efficiency |
| FR2989742B1 (fr) | 2012-04-19 | 2014-05-09 | Snecma | Carter de compresseur a cavites a forme amont optimisee |
| US9328735B2 (en) * | 2012-09-28 | 2016-05-03 | United Technologies Corporation | Split ring valve |
| WO2014098276A1 (fr) * | 2012-12-18 | 2014-06-26 | 한국항공우주연구원 | Appareil permettant d'empêcher un compresseur axial de caler au moyen d'un traitement de carter |
| US20160153465A1 (en) | 2014-12-01 | 2016-06-02 | General Electric Company | Axial compressor endwall treatment for controlling leakage flow therein |
| US20160238012A1 (en) * | 2015-02-18 | 2016-08-18 | Honeywell International Inc. | Adjustable-inlet radial-radial compressor |
| US11346240B2 (en) * | 2019-06-07 | 2022-05-31 | Raytheon Technologies Corporation | Gas turbine engine bleed valve damping guide link |
| US12018621B1 (en) * | 2023-08-16 | 2024-06-25 | Rolls-Royce North American Technologies Inc. | Adjustable depth tip treatment with rotatable ring with pockets for a fan of a gas turbine engine |
| US12085021B1 (en) * | 2023-08-16 | 2024-09-10 | Rolls-Royce North American Technologies Inc. | Adjustable air flow plenum with movable closure for a fan of a gas turbine engine |
| US12078070B1 (en) * | 2023-08-16 | 2024-09-03 | Rolls-Royce North American Technologies Inc. | Adjustable air flow plenum with sliding doors for a fan of a gas turbine engine |
-
2022
- 2022-10-04 FR FR2210149A patent/FR3140406A1/fr active Pending
-
2023
- 2023-09-28 US US19/117,504 patent/US12546336B2/en active Active
- 2023-09-28 CN CN202380071151.3A patent/CN119923526B/zh active Active
- 2023-09-28 WO PCT/FR2023/051501 patent/WO2024074777A1/fr not_active Ceased
- 2023-09-28 EP EP23793425.2A patent/EP4599171A1/fr active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090041576A1 (en) * | 2007-08-10 | 2009-02-12 | Volker Guemmer | Fluid flow machine featuring an annulus duct wall recess |
| US10539154B2 (en) * | 2014-12-10 | 2020-01-21 | General Electric Company | Compressor end-wall treatment having a bent profile |
| US20160169017A1 (en) * | 2014-12-16 | 2016-06-16 | General Electric Company | Circumferentially varying axial compressor endwall treatment for controlling leakage flow therein |
| US11572897B1 (en) * | 2021-07-13 | 2023-02-07 | Pratt & Whitney Canada Corp. | Compressor with casing treatment |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO2024074777A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3140406A1 (fr) | 2024-04-05 |
| CN119923526A (zh) | 2025-05-02 |
| CN119923526B (zh) | 2025-12-09 |
| WO2024074777A1 (fr) | 2024-04-11 |
| US12546336B2 (en) | 2026-02-10 |
| US20260009403A1 (en) | 2026-01-08 |
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