EP2354460B1 - Turbine Guide Vane - Google Patents
Turbine Guide Vane Download PDFInfo
- Publication number
- EP2354460B1 EP2354460B1 EP10152535.0A EP10152535A EP2354460B1 EP 2354460 B1 EP2354460 B1 EP 2354460B1 EP 10152535 A EP10152535 A EP 10152535A EP 2354460 B1 EP2354460 B1 EP 2354460B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- guide vane
- pads
- rail
- rails
- extending
- 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.)
- Active
Links
- 230000035882 stress Effects 0.000 description 4
- 239000000969 carrier Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Images
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
- 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
- F01D9/042—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector fixing blades to stators
-
- 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
- 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
- F05D2230/00—Manufacture
- F05D2230/60—Assembly methods
- F05D2230/64—Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins
-
- 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
- F05D2240/80—Platforms for stationary or moving blades
Definitions
- the present invention relates to a turbine guide vane.
- the present invention refers to a supporting system for turbine guide vanes.
- Gas turbine guide vanes are known to comprise a platform from which one or also more than one guide vane blade extend.
- each platform two or also three guide vane blades extend.
- the platforms have a front rail and a rear rail arranged to be inserted into guide vane carrier seats having a slot shape.
- the shape of the rails must allow free deformations in order to avoid stress concentration and breakage risk.
- Figure 1 shows a first embodiment of a traditional rail 1 inserted into a guide vane carrier seat 2 (in this figure the dimensions are exaggerated for sake of clarity, particularly radial dimensions are exaggerated); moreover, figure 1 also shows in dashed line a portion of a guide vane blade 3.
- the rail 1 has a pad 4, extending from its side towards the guide vane blades 3, resting against the guide vane carrier seat 2; a second pad 5 extends from the side of the rail 1 opposite the guide vane blade 3 and rests against the guide vane carrier seat 2.
- the guide vane in this traditional embodiment proved to have good deformation properties and also easy of assembling (i.e. sliding of the rail 1 into the guide vane carrier seat 2 proved to be easy); nevertheless this structure can only be implemented in lighter guide vanes; i.e. typically in guide vanes having only one or two guide vane blades 3.
- Figure 2 shows a different embodiment of traditional rails.
- This rail 1 is provided with pads 6 extending from the same side being the side of the rail 1 towards the guide vane blade 3; the opposite side of the rail 1 has no pads and rests directly against the guide vane carrier seat 2.
- the guide vanes with these rails can be much heavier than those with the rails of figure 1 , for example these guide vanes can have three or also more than three guide vane blades.
- US 7 458 772 discloses rails with pads extending from opposite circumferential portions thereof; the pads extending from the same circumferential portion are not staggered.
- the technical aim of the present invention is therefore to provide a guide vane by which the said problems of the known art are eliminated.
- an aspect of the invention is to provide a guide vane that can have a substantial weight and, in this respect, can also have three or more than three guide vane blades.
- Another aspect of the invention is to provide a guide vane with rails having large deformation possibilities, such that during operation stress and forces concentration are avoided or limited and the lifetime of the guide vanes is increased.
- a further aspect of the present invention is to provide a guide vane that can be easily and quickly assembled and disassembled.
- the guide vane 10 has a platform 12 from which guide vane blades 13 extend; in particular figure 3 shows an embodiment of a guide vane 10 with three guide vane blades 13, it is anyhow clear that in different embodiments their number can also be different.
- the guide vane 10 is also provided with supporting means that are located at the front side and rear side of the platform 12 (with reference to the hot gas flow direction indicated by arrow F in figure 3 ).
- the front side of the platform 12 has a seat 15 for the stator heat shield and, correspondingly, the rear side of the platform 12 has a seat 16 for a further stator heat shield (the stator heat shields are not shown).
- the front side of the platform 12 has a rail 18 arranged to be housed into a guide vane carrier seat 19; the guide vane carrier seat 19 is of traditional type and have the shape of a circumferential slot.
- the rear side of the platform 12 has a rail 20 arranged to be housed into a guide vane carrier seat 21; also the guide vane carrier seat 21 is of traditional type and have the shape of a circumferential slot.
- the rails 18 and 20 have projecting pads arranged to rest against the guide vane carrier seats 19, 21.
- each rail 18, 20 has two pads 23 extending from one side of the rail and two further pads 24 extending from an opposite side of the rail 18, 20.
- the pads 23 and 24 extend from opposite radial sides of each rail 18, 20; the pads 23 extend from a side of the rails 18, 20 facing the guide vane blades 13, and the other pads 24 extend from the opposite side, i.e. from the side opposite the guide vane blades 13.
- the pads 23 and 24 extend from opposite circumferential portions 26 of the rails 18, 20, i.e. they are located close to the circumferentially opposite ends of the rails 18, 20.
- the pads 23, 24 that extend from the same circumferential portion 26 of the rails 18, 20 are advantageously at least partly staggered with respect to one another.
- figure 4 (referring to the front rail 18) shows the pads 23 and 24 that are staggered but are circumferentially very close one to the other.
- Figure 5 shows that the pads 23 and 24 that are staggered are also circumferentially distant one from the other.
- each couple of pads 23, 24 extending from the same circumferential portion 26 of each rail 18, 20 the pads 23 extending from the side of the rail facing the guide vane blades 13 are farther from the respective rail end 27 than those opposite the guide vanes blades 13 (i.e. the pads 24).
- the pads 23 and 24 are symmetrically disposed with respect to the vane axis 28; it is anyhow clear that in different embodiments the pads 23 and 24 are not symmetrically disposed with respect to the vane axis 28.
- the guide vanes of the invention may also have a heavy structure (such as for example guide vanes having three or more guide vane blades 13), since assembling/disassembling is easy and the degree of allowable deformations is very large.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10152535.0A EP2354460B1 (en) | 2010-02-03 | 2010-02-03 | Turbine Guide Vane |
ES10152535T ES2431290T3 (es) | 2010-02-03 | 2010-02-03 | Álabe de guía de turbina |
US13/012,317 US20110189002A1 (en) | 2010-02-03 | 2011-01-24 | Turbine guide vane |
MYPI2011000407A MY155452A (en) | 2010-02-03 | 2011-01-28 | Turbine guide vane |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10152535.0A EP2354460B1 (en) | 2010-02-03 | 2010-02-03 | Turbine Guide Vane |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2354460A1 EP2354460A1 (en) | 2011-08-10 |
EP2354460B1 true EP2354460B1 (en) | 2013-07-24 |
Family
ID=42235861
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10152535.0A Active EP2354460B1 (en) | 2010-02-03 | 2010-02-03 | Turbine Guide Vane |
Country Status (4)
Country | Link |
---|---|
US (1) | US20110189002A1 (es) |
EP (1) | EP2354460B1 (es) |
ES (1) | ES2431290T3 (es) |
MY (1) | MY155452A (es) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106988785A (zh) * | 2015-09-22 | 2017-07-28 | 安萨尔多能源瑞士股份公司 | 燃气轮机导叶 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9151226B2 (en) | 2012-07-06 | 2015-10-06 | United Technologies Corporation | Corrugated mid-turbine frame thermal radiation shield |
US9303528B2 (en) | 2012-07-06 | 2016-04-05 | United Technologies Corporation | Mid-turbine frame thermal radiation shield |
EP3034798B1 (en) * | 2014-12-18 | 2018-03-07 | Ansaldo Energia Switzerland AG | Gas turbine vane |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1476928A1 (de) * | 1965-05-29 | 1969-07-31 | Bergmann Borsig Veb | Leitschaufelfuss fuer Turbinen mit hoher Eintrittstemperatur |
US5205708A (en) * | 1992-02-07 | 1993-04-27 | General Electric Company | High pressure turbine component interference fit up |
US7458772B2 (en) * | 2004-10-26 | 2008-12-02 | Alstom Technology Ltd. | Guide vane ring of a turbomachine and associated modification method |
FR2923527B1 (fr) * | 2007-11-13 | 2013-12-27 | Snecma | Etage de turbine ou de compresseur, en particulier de turbomachine |
-
2010
- 2010-02-03 EP EP10152535.0A patent/EP2354460B1/en active Active
- 2010-02-03 ES ES10152535T patent/ES2431290T3/es active Active
-
2011
- 2011-01-24 US US13/012,317 patent/US20110189002A1/en not_active Abandoned
- 2011-01-28 MY MYPI2011000407A patent/MY155452A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106988785A (zh) * | 2015-09-22 | 2017-07-28 | 安萨尔多能源瑞士股份公司 | 燃气轮机导叶 |
Also Published As
Publication number | Publication date |
---|---|
MY155452A (en) | 2015-10-15 |
ES2431290T3 (es) | 2013-11-25 |
US20110189002A1 (en) | 2011-08-04 |
EP2354460A1 (en) | 2011-08-10 |
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