WO2001066914A1 - Anneau fendu de turbine a gaz - Google Patents
Anneau fendu de turbine a gaz Download PDFInfo
- Publication number
- WO2001066914A1 WO2001066914A1 PCT/JP2001/001158 JP0101158W WO0166914A1 WO 2001066914 A1 WO2001066914 A1 WO 2001066914A1 JP 0101158 W JP0101158 W JP 0101158W WO 0166914 A1 WO0166914 A1 WO 0166914A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- split ring
- gas turbine
- cooling
- split
- gas
- Prior art date
Links
Classifications
-
- 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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/12—Cooling
-
- 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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
- F01D25/246—Fastening of diaphragms or stator-rings
-
- 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
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
-
- 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
- F05D2260/20—Heat transfer, e.g. cooling
- F05D2260/201—Heat transfer, e.g. cooling by impingement of a fluid
Definitions
- the present invention relates to a gas turbine split ring, and has a structure in which leakage of cooling air from a split ring connecting portion is reduced, thermal deformation is reduced, and a restraining force at the time of thermal deformation is softened.
- FIG. 4 is a general cross-sectional view showing a gas passage portion of a gas bin at a former stage.
- a single-stage stationary blade (1c) 32 is fixed to the outer flange 33 and the inner shroud 34 at both ends of the mounting flange 31 of the combustor 30, and the single-stage stationary blade 32 is arranged in the circumferential direction.
- the stationary cabin On the downstream side of the one-stage stationary blade 3 2, a plurality of one-stage moving blades (1 s) 35 are arranged in the circumferential direction, and the one-stage moving blade 35 is fixed to the platform 36.
- the platform 36 is mounted around the rotor disk, and the bucket 35 rotates with the mouth.
- An annular split ring 42 having a plurality of split numbers is attached around the vicinity of the tip of the bucket 35, and is fixed to the vehicle compartment side.
- both ends of the two-stage stationary vane (2c) 37 are fixed to the outer shroud 38 and the inner shroud 39, and similarly, a plurality of blades are circumferentially stationary. Installed.
- a two-stage bucket (2 s) 40 is attached to the rotor disk via the platform 41, and similarly around the tip of the bucket 40, a plurality of division numbers are provided.
- An annular split ring 43 is attached.
- a gas bin having such a wing arrangement is usually composed of four stages, and the combustion gas 50 Flows from the first-stage stationary blade (1c) 32 and expands in the process of flowing between the two-stage to four-stage blades, rotating the moving blades 35, 40, etc., and giving rotational power to the rotor. To discharge.
- FIG. 5 is a cross-sectional view of a detailed split ring in which the tip of the one-stage bucket 35 described above is close.
- reference numeral 60 denotes an impingement plate, which is provided with a large number of cooling holes 61 penetrating therethrough and attached to a heat shield ring 65.
- the split ring 42 is attached to the heat shield ring 65, inside which a number of cooling passages 64 are drilled in the flow direction of the mainstream gas 80, and one end opens to the upstream side of the upper surface as indicated by 63. The other end is open on the downstream circumferential side surface. .
- the cooling air 70 extracted from the compressor or supplied from an external cooling air supply source flows into the cavity 62 from the cooling hole 61 of the impingement plate 60, and the split ring 4 2
- the split ring 42 is forcibly cooled, and the cooling air 70 flows into the cooling passage 64 from the opening 63 in the cavity 62, and cools the split ring 42 again from the inside to form the split ring 42. It is released into the mainstream gas 80 from the rear opening.
- FIG. 6 is a perspective view of the split ring described above.
- the split ring 42 forms a divided piece in the circumferential direction, and a plurality of split rings 42 are connected in an annular shape to form the entire split ring 42.
- An impingement plate 60 is provided at an upper portion (outside) of the split ring 42, and a cavity 62 is formed by the concave portion of the split ring 42.
- a number of cooling holes 61 are provided in the impingement plate 60, and the cooling air 70 flows into the cavity 62 from the cooling holes 61 and collides with the wall surface of the split ring 42, thereby causing the split ring 4 2 is forcibly cooled from the wall surface, and the air 70 flows into the cooling passage 64 from the opening 63, flows through the passage, and is discharged from the end face into the mainstream gas. 2 Cooling the inside.
- the present invention provides a gas turbine pin split ring having a structure capable of reducing the number of split rings to reduce the amount of leakage of cooling air, further reducing the thermal deformation of the split ring, and absorbing the distortion during the thermal deformation.
- the task was to provide
- the present invention provides the following means (1) and (2) to solve the above-mentioned problems.
- a divided structure portion is provided on the peripheral surface of the vehicle interior at a predetermined distance from the blade tip, and has a vehicle interior mounting flange extending in the circumferential direction on each of the front and rear sides.
- a plurality of the split structure portions are connected to each other in the circumferential direction to form an annular shape, and the front and rear casing mounting flanges are formed by cutting the flange portions in the axial direction.
- a gas turbine split ring wherein a plurality of projections are formed in a grid pattern on a surface between the two compartment mounting flanges.
- FIG. 1 shows a gas turbine split ring according to an embodiment of the present invention, wherein (a) is a cross-sectional view and (b) is a view taken along the line AA in (a).
- FIG. 2 is a perspective view of a gas turbine split ring according to one embodiment of the present invention.
- FIG. 3 is a front view of a gas turbine split ring according to an embodiment of the present invention viewed from an axial direction, where (a) shows the present invention, and (b) shows a conventional example.
- FIG. 2 is a cross-sectional view showing a front part of a general gas passage of a gas turbine.
- FIG. 5 is a detailed sectional view of a conventional gas turbine split ring.
- FIG. 6 is a perspective view of a conventional gas split bin split ring. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 shows a gas turbine split ring according to an embodiment of the present invention
- split ring 1 is a circle Shows the split part of the annular split ring, which is attached to the heat shield ring 65 as in the past, has openings 63 in the cavity 62, and has a number of cooling passages that open to the circumferential end face on the downstream side 6 4 are provided.
- the inbinge plate 60 is attached to the heat shield ring 65 as in the conventional case.
- Flanges 4 and 5 extending in the circumferential direction are provided at the front and rear ends of the split ring 1, and flanges 2 and 3 are also provided at both ends in the circumferential direction.
- the split rings 1 and 2 are provided at these flanges 2, 3, 4 and 5.
- a recess is formed in the recess.
- the two flanges 4 and 5 extending in the circumferential direction are formed with a plurality of slits 6 formed by cutting out the flange portions, and the bending caused by thermal deformation is absorbed by the plurality of slits 6 and deformed. It has a structure to prevent it. It is desirable that the number of slits 6 should be 5 or more for each split ring.
- a waffle pattern 10 is formed on the concave bottom surface so as to increase the rigidity of the bottom surface. This waffle pattern 10 is formed by ribs protruding from the grid-like wall surface, and is shown by three grid-like patterns in the circumferential direction and five in the axial direction in the figure, but this is an example.
- FIG. 2 is a perspective view of the split ring described above, and a large number of slits 6 are provided in both end flanges 4 and 5 of the split ring 1 extending in the circumferential direction.
- a slit having such a shape is optimal.
- a lattice-like waffle pattern 10 is formed on the bottom surface, and a number of cooling passages 7 are provided inside the wall to constitute one of the split rings.
- Such a split ring 1 is connected in an annular shape so as to maintain an appropriate clearance close to the blade tip.
- the number of divisions is to reduce the number of connections by reducing the number of connections from the conventional 30 to one-fifteen, reducing the amount of cooling air leaking from the connections. ing.
- Cooling air 70 from another source flows into the cavity 62 from a number of cooling holes 6 1 of the impingement plate 60, collides with the bottom surface of the split ring 1, and cools the split ring 1,
- the cooling air 70 flows into the cooling passage 64 from the opening 63, flows through the passage 64 while cooling the inside of the split ring 1, and is discharged into the mainstream gas from the peripheral end face.
- the split ring 1 exposed to the high-temperature gas is deformed due to the temperature difference between the surface exposed to the gas and the internal cavity 6 2 side due to the temperature difference.
- the rigidity is increased, and the amount of deformation is minimized.
- the deformation that occurs in the flanges 4 and 5 also deforms a large number of slits 60 and absorbs them, so that the roundness of the split ring 1 does not change.
- FIGS. 3A and 3B are diagrams showing the number of divisions of a dividing ring.
- FIG. 3A is a side view of the upper half showing the present invention
- FIG. 3B is a conventional example.
- 0 2 12 degrees.
- the present invention it is set to 24 degrees, and 15 rings, which are half of the conventional case, are connected to form an annular shape.
- the length of one split ring 1 is reduced. It is getting longer. In this way, by connecting the long split rings 1 in an annular shape and reducing the number of splits to reduce the number of connection portions, the amount of air leaking from the seam can be reduced.
- a plurality of slits 6 are provided in the flanges 4 and 5 on both sides extending in the circumferential direction of the ring 1, and a waffle pattern 10 is formed on the bottom surface.
- the gas turbine split ring has the following features.
- the gas turbine split ring is disposed on the peripheral surface of the vehicle interior at a predetermined distance from the blade tip, and has a vehicle interior mounting flange extending in the circumferential direction on each of the front and rear sides.
- a divided ring formed by connecting a plurality of the divided structural parts in the circumferential direction to form an annular shape, wherein the front and rear casing mounting flanges are cut axially in axial direction.
- a plurality of slits formed in parallel with each other, and projections projecting in a lattice shape are formed on a surface between the two compartment mounting flanges.
- the plurality of slits can deform and absorb the heat.
- the rigidity is enhanced by the bottom hole pattern, and the thermal deformation of the split ring is improved. Can be kept small, and roundness can be secured.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/959,310 US6508623B1 (en) | 2000-03-07 | 2001-02-19 | Gas turbine segmental ring |
JP2001565507A JP3632003B2 (ja) | 2000-03-07 | 2001-02-19 | ガスタービン分割環 |
CA002372984A CA2372984C (en) | 2000-03-07 | 2001-02-19 | Gas turbine segmental ring |
EP01906135.7A EP1178182B1 (en) | 2000-03-07 | 2001-02-19 | Gas turbine split ring |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000-62492 | 2000-03-07 | ||
JP2000062492 | 2000-03-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001066914A1 true WO2001066914A1 (fr) | 2001-09-13 |
Family
ID=18582499
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/001158 WO2001066914A1 (fr) | 2000-03-07 | 2001-02-19 | Anneau fendu de turbine a gaz |
Country Status (5)
Country | Link |
---|---|
US (1) | US6508623B1 (ja) |
EP (1) | EP1178182B1 (ja) |
JP (1) | JP3632003B2 (ja) |
CA (1) | CA2372984C (ja) |
WO (1) | WO2001066914A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008513657A (ja) * | 2004-09-17 | 2008-05-01 | ヌオーヴォ ピニォーネ ソシエタ ペル アチオニ | タービンステータ用の保護装置 |
Families Citing this family (47)
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JP3825279B2 (ja) * | 2001-06-04 | 2006-09-27 | 三菱重工業株式会社 | ガスタービン |
GB2378730B (en) * | 2001-08-18 | 2005-03-16 | Rolls Royce Plc | Cooled segments surrounding turbine blades |
US6659716B1 (en) * | 2002-07-15 | 2003-12-09 | Mitsubishi Heavy Industries, Ltd. | Gas turbine having thermally insulating rings |
US6786052B2 (en) * | 2002-12-06 | 2004-09-07 | 1419509 Ontario Inc. | Insulation system for a turbine and method |
ITMI20041780A1 (it) | 2004-09-17 | 2004-12-17 | Nuovo Pignone Spa | Dispositivo di protezione per uno statore di una turbina |
US20060078429A1 (en) * | 2004-10-08 | 2006-04-13 | Darkins Toby G Jr | Turbine engine shroud segment |
US7165937B2 (en) * | 2004-12-06 | 2007-01-23 | General Electric Company | Methods and apparatus for maintaining rotor assembly tip clearances |
US7520715B2 (en) | 2005-07-19 | 2009-04-21 | Pratt & Whitney Canada Corp. | Turbine shroud segment transpiration cooling with individual cast inlet and outlet cavities |
US20070020088A1 (en) * | 2005-07-20 | 2007-01-25 | Pratt & Whitney Canada Corp. | Turbine shroud segment impingement cooling on vane outer shroud |
US20070249823A1 (en) * | 2006-04-20 | 2007-10-25 | Chemagis Ltd. | Process for preparing gemcitabine and associated intermediates |
US7665955B2 (en) * | 2006-08-17 | 2010-02-23 | Siemens Energy, Inc. | Vortex cooled turbine blade outer air seal for a turbine engine |
US7597533B1 (en) | 2007-01-26 | 2009-10-06 | Florida Turbine Technologies, Inc. | BOAS with multi-metering diffusion cooling |
US7665962B1 (en) | 2007-01-26 | 2010-02-23 | Florida Turbine Technologies, Inc. | Segmented ring for an industrial gas turbine |
GB0704879D0 (en) * | 2007-03-14 | 2007-04-18 | Rolls Royce Plc | A Casing arrangement |
US7704039B1 (en) | 2007-03-21 | 2010-04-27 | Florida Turbine Technologies, Inc. | BOAS with multiple trenched film cooling slots |
GB0707099D0 (en) * | 2007-04-13 | 2007-05-23 | Rolls Royce Plc | A casing |
SI2137382T1 (sl) * | 2007-04-19 | 2012-10-30 | Alstom Technology Ltd | Statorski toplotni ščit |
WO2009000801A1 (de) * | 2007-06-28 | 2008-12-31 | Alstom Technology Ltd | Hitzeschildsegment für einen stator einer gasturbine |
US8061979B1 (en) | 2007-10-19 | 2011-11-22 | Florida Turbine Technologies, Inc. | Turbine BOAS with edge cooling |
US8439639B2 (en) * | 2008-02-24 | 2013-05-14 | United Technologies Corporation | Filter system for blade outer air seal |
US8251637B2 (en) * | 2008-05-16 | 2012-08-28 | General Electric Company | Systems and methods for modifying modal vibration associated with a turbine |
EP2159381A1 (de) * | 2008-08-27 | 2010-03-03 | Siemens Aktiengesellschaft | Turbinenleitschaufelträger für eine Gasturbine |
US8128344B2 (en) * | 2008-11-05 | 2012-03-06 | General Electric Company | Methods and apparatus involving shroud cooling |
US20110044803A1 (en) * | 2009-08-18 | 2011-02-24 | Pratt & Whitney Canada Corp. | Blade outer air seal anti-rotation |
KR101366908B1 (ko) | 2009-08-24 | 2014-02-24 | 미츠비시 쥬고교 가부시키가이샤 | 분할환 냉각 구조 및 가스 터빈 |
GB0916823D0 (en) * | 2009-09-25 | 2009-11-04 | Rolls Royce Plc | Containment casing for an aero engine |
GB0917149D0 (en) * | 2009-10-01 | 2009-11-11 | Rolls Royce Plc | Impactor containment |
FR2962484B1 (fr) * | 2010-07-08 | 2014-04-25 | Snecma | Secteur d'anneau de turbine de turbomachine equipe de cloison |
US8388300B1 (en) * | 2010-07-21 | 2013-03-05 | Florida Turbine Technologies, Inc. | Turbine ring segment |
US8714911B2 (en) * | 2011-01-06 | 2014-05-06 | General Electric Company | Impingement plate for turbomachine components and components equipped therewith |
US8475122B1 (en) * | 2011-01-17 | 2013-07-02 | Florida Turbine Technologies, Inc. | Blade outer air seal with circumferential cooled teeth |
US8826668B2 (en) * | 2011-08-02 | 2014-09-09 | Siemens Energy, Inc. | Two stage serial impingement cooling for isogrid structures |
US9080458B2 (en) | 2011-08-23 | 2015-07-14 | United Technologies Corporation | Blade outer air seal with multi impingement plate assembly |
EP2977618B1 (en) * | 2011-12-31 | 2019-10-30 | Rolls-Royce Corporation | Gas turbine engine with a blade track assembly and corresponding assembly method |
US9145789B2 (en) * | 2012-09-05 | 2015-09-29 | General Electric Company | Impingement plate for damping and cooling shroud assembly inter segment seals |
EP2728255A1 (en) | 2012-10-31 | 2014-05-07 | Alstom Technology Ltd | Hot gas segment arrangement |
US9587504B2 (en) | 2012-11-13 | 2017-03-07 | United Technologies Corporation | Carrier interlock |
US9371735B2 (en) * | 2012-11-29 | 2016-06-21 | Solar Turbines Incorporated | Gas turbine engine turbine nozzle impingement cover |
US10018052B2 (en) | 2012-12-28 | 2018-07-10 | United Technologies Corporation | Gas turbine engine component having engineered vascular structure |
EP2938828A4 (en) | 2012-12-28 | 2016-08-17 | United Technologies Corp | GAS TURBINE ENGINE COMPONENT WITH VASCULAR MANIPULATED GRID STRUCTURE |
US10100737B2 (en) * | 2013-05-16 | 2018-10-16 | Siemens Energy, Inc. | Impingement cooling arrangement having a snap-in plate |
US10094287B2 (en) | 2015-02-10 | 2018-10-09 | United Technologies Corporation | Gas turbine engine component with vascular cooling scheme |
US10077664B2 (en) | 2015-12-07 | 2018-09-18 | United Technologies Corporation | Gas turbine engine component having engineered vascular structure |
US10683756B2 (en) | 2016-02-03 | 2020-06-16 | Dresser-Rand Company | System and method for cooling a fluidized catalytic cracking expander |
US10221694B2 (en) | 2016-02-17 | 2019-03-05 | United Technologies Corporation | Gas turbine engine component having vascular engineered lattice structure |
US10774653B2 (en) | 2018-12-11 | 2020-09-15 | Raytheon Technologies Corporation | Composite gas turbine engine component with lattice structure |
US10822987B1 (en) * | 2019-04-16 | 2020-11-03 | Pratt & Whitney Canada Corp. | Turbine stator outer shroud cooling fins |
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WO1995030072A1 (en) * | 1994-04-28 | 1995-11-09 | United Technologies Corporation | Shroud segment having a cut-back retaining hook |
JPH1113406A (ja) * | 1997-06-23 | 1999-01-19 | Hitachi Ltd | ガスタービン静翼 |
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GB2117843B (en) * | 1982-04-01 | 1985-11-06 | Rolls Royce | Compressor shrouds |
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US4650395A (en) * | 1984-12-21 | 1987-03-17 | United Technologies Corporation | Coolable seal segment for a rotary machine |
US5071313A (en) * | 1990-01-16 | 1991-12-10 | General Electric Company | Rotor blade shroud segment |
US5380150A (en) * | 1993-11-08 | 1995-01-10 | United Technologies Corporation | Turbine shroud segment |
US5439348A (en) * | 1994-03-30 | 1995-08-08 | United Technologies Corporation | Turbine shroud segment including a coating layer having varying thickness |
JP2961091B2 (ja) | 1997-07-08 | 1999-10-12 | 三菱重工業株式会社 | ガスタービン分割環冷却穴構造 |
US6019572A (en) | 1998-08-06 | 2000-02-01 | Siemens Westinghouse Power Corporation | Gas turbine row #1 steam cooled vane |
DE19919654A1 (de) * | 1999-04-29 | 2000-11-02 | Abb Alstom Power Ch Ag | Hitzeschild für eine Gasturbine |
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2001
- 2001-02-19 WO PCT/JP2001/001158 patent/WO2001066914A1/ja active Application Filing
- 2001-02-19 JP JP2001565507A patent/JP3632003B2/ja not_active Expired - Lifetime
- 2001-02-19 US US09/959,310 patent/US6508623B1/en not_active Expired - Lifetime
- 2001-02-19 CA CA002372984A patent/CA2372984C/en not_active Expired - Lifetime
- 2001-02-19 EP EP01906135.7A patent/EP1178182B1/en not_active Expired - Lifetime
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US3990807A (en) * | 1974-12-23 | 1976-11-09 | United Technologies Corporation | Thermal response shroud for rotating body |
WO1995030072A1 (en) * | 1994-04-28 | 1995-11-09 | United Technologies Corporation | Shroud segment having a cut-back retaining hook |
JPH1113406A (ja) * | 1997-06-23 | 1999-01-19 | Hitachi Ltd | ガスタービン静翼 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008513657A (ja) * | 2004-09-17 | 2008-05-01 | ヌオーヴォ ピニォーネ ソシエタ ペル アチオニ | タービンステータ用の保護装置 |
KR101289613B1 (ko) | 2004-09-17 | 2013-07-24 | 누보 피그노네 에스피에이 | 가스 터빈 스테이터용 보호 장치 |
Also Published As
Publication number | Publication date |
---|---|
EP1178182A1 (en) | 2002-02-06 |
JP3632003B2 (ja) | 2005-03-23 |
EP1178182B1 (en) | 2013-08-14 |
EP1178182A4 (en) | 2005-09-07 |
CA2372984C (en) | 2005-05-10 |
CA2372984A1 (en) | 2001-09-13 |
US6508623B1 (en) | 2003-01-21 |
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EP3241991A1 (en) | Turbine assembly |
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