EP2576998B1 - Steam turbine assembly and method of assembling a steam turbine - Google Patents
Steam turbine assembly and method of assembling a steam turbine Download PDFInfo
- Publication number
- EP2576998B1 EP2576998B1 EP11723933.5A EP11723933A EP2576998B1 EP 2576998 B1 EP2576998 B1 EP 2576998B1 EP 11723933 A EP11723933 A EP 11723933A EP 2576998 B1 EP2576998 B1 EP 2576998B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- inner casing
- stationary blade
- guide blade
- blade carrier
- blade ring
- 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.)
- Not-in-force
Links
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
- 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
- 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
- F01D25/26—Double casings; Measures against temperature strain in casings
-
- 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
- F05D2230/642—Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins using maintaining alignment while permitting differential dilatation
-
- 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
- F05D2230/644—Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins for adjusting the position or the alignment, e.g. wedges or eccenters
-
- 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
- F05D2250/20—Three-dimensional
- F05D2250/29—Three-dimensional machined; miscellaneous
- F05D2250/292—Three-dimensional machined; miscellaneous tapered
Definitions
- the present invention relates to steam turbines, used, for example, in power generation.
- the present invention relates to assembly of such a steam turbine.
- a steam turbine conventionally includes an outer casing and an inner casing arranged therein. Inside the inner casing is mounted one or more stationary blade rings and guide blade carriers. Guide blade carriers are normally placed in the regions having high steam temperature and pressure whereas stationary blade rings are placed after in the regions having relatively lower steam temperature and pressure. Guide blade carriers are typically formed by casting wherein stationary blades are assembled in the guide blade carrier via grooves machined in the inner diameter of the guide blade carrier. Stationary blade rings are normally fabricated wherein the stationary blades are welded in the inner diameter of stationary blade rings.
- Each Stationary blade ring or guide blade carrier On each Stationary blade ring or guide blade carrier are mounted one or more rows of guide blades axially separated from each other.
- Each guide blade row includes several guide blades arranged next to each other in a circumferential direction.
- transverse fixing of the inner casing to the components within, such as guide blade carriers or stationary blade ring are done by using flat faced fixing keys or liners.
- the thicknesses of the keys or liners are adjusted by machining on site based on the available space for fitment of the keys or liners as measured at the site. This adjustment of thickness of the keys by machining on site is required for proper fastening of these components each time the steam turbine needs to be reassembled following an overhaul, outage or upgrade.
- the object of the present invention is the overcome the above-mentioned disadvantages of the state of the art, in particular, to obviate the need for machining the fixing keys on site every time during assembly of a steam turbine.
- the underlying idea of the present invention is to provide transverse fixing of the guide blade carrier or stationary blade ring to the inner casing in a steam turbine using tapered keys having varying thickness fitted therebetween.
- the guide blade carrier or stationary blade ring comprises a radially outward arm supported between a pair of transversely separated support faces of said inner casing.
- a pair of keys are slidably fitted respectively between the arm and each of the support faces, for transversely fastening said guide blade carrier or stationary blade ring to said inner casing.
- An essential feature of the present invention is that each said key is tapered to have a varying thickness between said radial arm and the respective support face.
- An advantage of the present invention is that it provides easy assembly of the turbine by eliminating the need for on the site machining of the surface of the keys to adjust the thickness prior to assembly of the steam turbine.
- a second advantage of the present invention is that the use of tapered keys provides improved alignment of such components.
- each of the support faces of the inner casing is correspondingly tapered to interface with a respective tapered surface of each of the keys.
- vertical adjustment is provided by the use of shims in the vertical gap between a transverse portion of the keys and a corresponding transverse surface of the inner casing, which vertical gap resulting from the fitting of the keys between the inner casing and the guide blade carrier or stationary blade ring.
- FIG. 1 a longitudinal cross-section from the top of a low pressure steam turbine assembly 1 where the present invention finds an exemplary application.
- the steam turbine assembly 1 includes an outer casing 2, enclosing an inner casing 3 arranged around a rotor 6 having a longitudinal axis 4 along a horizontal direction Y-Y.
- the inner casing 3 and rotor 6 form an annular steam flow path between themselves, the inner casing 3 forming the outer periphery of the flow path.
- a plurality of stationary guide blades 7 and rotating blades 8 are arranged in alternate rows interspaced axially.
- Each row of moving blades includes a plurality of blades 8 affixed to the rotor 6 and arranged side by side in a circumferential direction, each blade having an airfoil portion extending radially outward from the rotor 6 into the steam flow path.
- Each row of guide blades includes a plurality of guide blades 7 arranged side by side in a circumferential direction on a stationary blade ring or guide blade carrier or stationary blade ring 5 that is affixed to the inner casing 3.
- Each stationary guide blade 7 has an airfoil portion extending radially inwardly from the guide blade carrier or stationary blade ring 5 into the steam flow path.
- the present invention provides a means for fastening the blade carrier or stationary blade ring 5 to the inner casing 3 in the transverse direction X-X.
- An exemplary arrangement for transverse fastening of the guide blade carrier or stationary blade ring 5 to the inner casing 3 is shown in FIG 2 , which shows a simplified cross-sectional view through the section A-A in FIG 1 .
- the inner casing 3 and the guide blade carrier or stationary blade ring 5 are each made of an upper half and a lower half affixed to each other.
- FIG 2 only the lower halves of the inner casing 3 and the guide blade carrier or stationary blade ring 5 are shown, wherein the essential features of the present invention are incorporated.
- the guide blade carrier or stationary blade ring 5 i.e., the lower half thereof, includes a radial arm 10.
- the radial arm 10 of the guide blade carrier or stationary blade ring 5 is supported between the faces 11a and 11b of the inner casing 3.
- a pair of keys 13a and 13b are inserted on opposite sides of the radial arm 10, between the arm 10 and the respective support face 11a and 11b.
- each of the keys 13a and 13b is tapered to have a varying thickness between the radial arm 10 and the respective support faces 11a and 11b
- each of the keys 13a and 13b includes a tapered surface 14a and 14b.
- the support faces 11a and 11b are machined to have a corresponding taper that interfaces with the surfaces 14a and 14b of the keys 13a and 1b respectively.
- the assembly method includes positioning the guide blade carrier or stationary blade ring 5 within the inner casing 3 such that the radial arm 10 of the guide blade carrier or stationary blade ring 5 extends between the support faces 11a and 11b.
- the keys 13a and 13b are then vertically inserted into the spaces between the arm 10 and the support faces 11a and 11b, such that the surfaces 14a and 14b slide over the surfaces 12a and 12b till a tight fit is obtained, whereby the guide blade carrier or stationary blade ring 5 is locked or fastened in the transverse direction X-X.
- the above method of fastening obviates the need for machining the surfaces of the keys for providing the required clearance with the guide blade carrier or stationary blade ring each time during assembly or reassembly, for example, following an overhaul, outage or upgrade of the steam turbine. Further using tapered keys of the above type provides a better transverse alignment of the guide blade carrier or stationary blade ring with respect to the inner casing.
- each of the keys 13a and 13b includes a transverse arm 15a and 15b which is supported over a respective transverse surface 12a and 12b on the inner casing.
- the keys 13a and 13b are inserted to the required extent to obtain the necessary clearance.
- a pair of shims 16a,16b are inserted into the resultant vertical gaps 18a and 18b between the transverse arms 15a,15b and the surfaces 12a,12b after the fitment of the keys.
- the shims 16a and 16b are fastened by bolts 17a and 18b, to provide fastening in the vertical direction Z-Z.
- the vertical gaps 18a and 18b may vary in thickness from assembly to assembly. Accordingly, shims of a required thickness may be inserted into these gaps to provide vertical adjustment to the assembly. Such a practice is less time consuming and more economical than the process of machining the surface of the flat keys for each assembly.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Description
- The present invention relates to steam turbines, used, for example, in power generation. In particular, the present invention relates to assembly of such a steam turbine.
- A steam turbine conventionally includes an outer casing and an inner casing arranged therein. Inside the inner casing is mounted one or more stationary blade rings and guide blade carriers. Guide blade carriers are normally placed in the regions having high steam temperature and pressure whereas stationary blade rings are placed after in the regions having relatively lower steam temperature and pressure. Guide blade carriers are typically formed by casting wherein stationary blades are assembled in the guide blade carrier via grooves machined in the inner diameter of the guide blade carrier. Stationary blade rings are normally fabricated wherein the stationary blades are welded in the inner diameter of stationary blade rings.
- On each Stationary blade ring or guide blade carrier are mounted one or more rows of guide blades axially separated from each other. Each guide blade row includes several guide blades arranged next to each other in a circumferential direction.
- The document
US 4,650,396 A discloses a steam turbine assembly. - Conventionally, transverse fixing of the inner casing to the components within, such as guide blade carriers or stationary blade ring are done by using flat faced fixing keys or liners. During assembly, the thicknesses of the keys or liners are adjusted by machining on site based on the available space for fitment of the keys or liners as measured at the site. This adjustment of thickness of the keys by machining on site is required for proper fastening of these components each time the steam turbine needs to be reassembled following an overhaul, outage or upgrade.
- The object of the present invention is the overcome the above-mentioned disadvantages of the state of the art, in particular, to obviate the need for machining the fixing keys on site every time during assembly of a steam turbine.
- The above object is achieved by the steam turbine assembly according to claim 1 and the method according to
claim 5. - Advantageous embodiments of the present invention are the subject matter of the dependent claims.
- The underlying idea of the present invention is to provide transverse fixing of the guide blade carrier or stationary blade ring to the inner casing in a steam turbine using tapered keys having varying thickness fitted therebetween. To that end, the guide blade carrier or stationary blade ring comprises a radially outward arm supported between a pair of transversely separated support faces of said inner casing. A pair of keys are slidably fitted respectively between the arm and each of the support faces, for transversely fastening said guide blade carrier or stationary blade ring to said inner casing. An essential feature of the present invention is that each said key is tapered to have a varying thickness between said radial arm and the respective support face.
- An advantage of the present invention is that it provides easy assembly of the turbine by eliminating the need for on the site machining of the surface of the keys to adjust the thickness prior to assembly of the steam turbine. A second advantage of the present invention is that the use of tapered keys provides improved alignment of such components.
- In a further embodiment, each of the support faces of the inner casing is correspondingly tapered to interface with a respective tapered surface of each of the keys.
- Advantageously, in a further embodiment, vertical adjustment is provided by the use of shims in the vertical gap between a transverse portion of the keys and a corresponding transverse surface of the inner casing, which vertical gap resulting from the fitting of the keys between the inner casing and the guide blade carrier or stationary blade ring.
- The present invention is further described hereinafter with reference to illustrated embodiments shown in the accompanying drawings, in which:
-
FIG 1 is a portion of a longitudinal cross-section of a low pressure steam turbine, and -
FIG 2 is a cross-sectional view of the steam turbine taken at an axial location, showing a guide blade carrier or stationary blade ring mounted on to the inner casing. - There is shown in
FIG. 1 a longitudinal cross-section from the top of a low pressure steam turbine assembly 1 where the present invention finds an exemplary application. The steam turbine assembly 1 includes anouter casing 2, enclosing aninner casing 3 arranged around arotor 6 having alongitudinal axis 4 along a horizontal direction Y-Y. - The
inner casing 3 androtor 6 form an annular steam flow path between themselves, theinner casing 3 forming the outer periphery of the flow path. A plurality of stationary guide blades 7 and rotating blades 8 are arranged in alternate rows interspaced axially. Each row of moving blades includes a plurality of blades 8 affixed to therotor 6 and arranged side by side in a circumferential direction, each blade having an airfoil portion extending radially outward from therotor 6 into the steam flow path. Each row of guide blades includes a plurality of guide blades 7 arranged side by side in a circumferential direction on a stationary blade ring or guide blade carrier orstationary blade ring 5 that is affixed to theinner casing 3. Each stationary guide blade 7 has an airfoil portion extending radially inwardly from the guide blade carrier orstationary blade ring 5 into the steam flow path. - The present invention provides a means for fastening the blade carrier or
stationary blade ring 5 to theinner casing 3 in the transverse direction X-X. An exemplary arrangement for transverse fastening of the guide blade carrier orstationary blade ring 5 to theinner casing 3 is shown inFIG 2 , which shows a simplified cross-sectional view through the section A-A inFIG 1 . In the illustrated embodiment, theinner casing 3 and the guide blade carrier orstationary blade ring 5 are each made of an upper half and a lower half affixed to each other. InFIG 2 , only the lower halves of theinner casing 3 and the guide blade carrier orstationary blade ring 5 are shown, wherein the essential features of the present invention are incorporated. - Referring to
FIG 2 , the guide blade carrier orstationary blade ring 5, i.e., the lower half thereof, includes aradial arm 10. Theinner casing 3, i.e., the lower half of the inner casing in this embodiment, includes a pair of transversely separated support faces 11a and 11b. Theradial arm 10 of the guide blade carrier orstationary blade ring 5 is supported between thefaces inner casing 3. A pair ofkeys radial arm 10, between thearm 10 and therespective support face keys radial arm 10 and the respective support faces 11a and 11b To that end, each of thekeys tapered surface surfaces keys 13a and 1b respectively. - The assembly method includes positioning the guide blade carrier or
stationary blade ring 5 within theinner casing 3 such that theradial arm 10 of the guide blade carrier orstationary blade ring 5 extends between the support faces 11a and 11b. Thekeys arm 10 and the support faces 11a and 11b, such that thesurfaces surfaces stationary blade ring 5 is locked or fastened in the transverse direction X-X. The above method of fastening obviates the need for machining the surfaces of the keys for providing the required clearance with the guide blade carrier or stationary blade ring each time during assembly or reassembly, for example, following an overhaul, outage or upgrade of the steam turbine. Further using tapered keys of the above type provides a better transverse alignment of the guide blade carrier or stationary blade ring with respect to the inner casing. - In the illustrated embodiment, each of the
keys transverse arm transverse surface keys shims vertical gaps transverse arms surfaces shims bolts vertical gaps - While this invention has been described in detail with reference to certain preferred embodiments, it should be appreciated that the present invention is not limited to those precise embodiments. Rather, in view of the present disclosure which describes the current best mode for practicing the invention, many modifications and variations would present themselves, to those of skill in the art without departing from the scope of the invention as defined by the following claims.
Claims (6)
- A steam turbine assembly (1), comprising:- an inner casing (3) arranged around a longitudinal rotor axis (4),- a guide blade carrier or stationary blade ring (5) arranged in said inner casing (3) circumferentially around said rotor axis (4), said guide blade carrier or stationary blade ring (5) comprising a radially outward arm (10) supported between a pair of transversely separated support faces (11a,11b) of said inner casing (3), and- a pair of keys (13a,13b) slidably fitted respectively between said radial arm (10) and each of said support faces (11a,11b), for transversely fastening said guide blade carrier or stationary blade ring (5) to said inner casing (3), characterized in that each said key (13a,13b) is tapered to have a varying thickness between said radial arm (10) and the respective support face (11a,11b), wherein each of said support faces (11a,11b) of the inner casing (3) is correspondingly tapered to interface with a respective tapered surface (14a,14b) of each of said keys (13a,13b).
- The steam turbine assembly (1) according to claim 1, wherein each of said keys (13a,13b) further includes a transverse arm (15a,15b) supported over a corresponding transverse surface (12a,12b) of said inner casing (3), and wherein a shim (16a,16b) is disposed in a vertical gap (18a,18b) between said transverse arm (16a,16b) of each key (13a,13b) and the corresponding transverse surface (12a,12b) of the inner casing (3), which vertical gap (18a,18b) resulting from said slidable fit of said key (13a,13b)
- The steam turbine assembly (1) according to any of the preceding claims, wherein- said inner casing (3) comprises an upper inner casing half and a lower inner casing half, and said pair of support faces (11a,11b) is provided on said lower inner casing half, and- said guide blade carrier or stationary blade ring (5) comprises an upper guide blade carrier or stationary blade ring half and a lower guide blade carrier or stationary blade ring half, and said radial arm (10) is provided on said lower guide blade carrier or stationary blade ring half.
- A method of assembling a steam turbine (1), comprising:- arranging an inner casing (3) around a longitudinal rotor axis (4),- arranging a guide blade carrier or stationary blade ring (5) in said inner casing (3) circumferentially around said rotor axis (4), said arrangement of said guide blade carrier or stationary blade ring (5) comprising positioning a radially outward arm (10) of said guide blade carrier or stationary blade ring (5) between a pair of transversely separated support faces (11a,11b) of said inner casing (3),- slidably fitting a pair of keys (13a,13b) respectively between said radial arm (10) and each of said support faces (11a,11b) to transversely fasten said guide blade carrier or stationary blade ring (5) to said inner casing (3), characterized in that each said key (13a,13b) is tapered to have a varying thickness between said radial arm (10) and the respective support face (11a,11b),
wherein each of said support faces (11a,11b) of the inner casing (3) is correspondingly tapered to interface with a respective tapered surface (14a,14b) of each of said keys (13a,13b). - The method according to claim 4, wherein each of said keys (13a,13b) further includes a transverse arm (15a,15b) supportable over a corresponding transverse surface (12a,12b) of said inner casing (3), wherein said method further includes disposing a shim (16a,16b) in a vertical gap (18a,18b) between said transverse arm (15a,15b) of each key (13a,13b) and the corresponding transverse surface (12a,12b) of the inner casing (3), which vertical gap (18a,18b) resulting from said slidable fit of said key (13a,13b).
- The method according to claim 4 or 5, wherein- arranging said inner casing (3) comprises arranging an upper inner casing half and a lower inner casing half, wherein said pair of support faces (11a,11b) is provided on said lower inner casing half, and- arranging said guide blade carrier or stationary blade ring (5) comprises arranging an upper guide blade carrier or stationary blade ring half and a lower guide blade carrier or stationary blade ring half, and said radial arm (10) is provided on said lower guide blade carrier or stationary blade ring half.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11723933.5A EP2576998B1 (en) | 2010-06-04 | 2011-05-31 | Steam turbine assembly and method of assembling a steam turbine |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10005811A EP2392784A1 (en) | 2010-06-04 | 2010-06-04 | Steam turbine assembly and method of assembling a steam turbine |
PCT/EP2011/058955 WO2011151329A1 (en) | 2010-06-04 | 2011-05-31 | Steam turbine assembly and method of assembling a steam turbine |
EP11723933.5A EP2576998B1 (en) | 2010-06-04 | 2011-05-31 | Steam turbine assembly and method of assembling a steam turbine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2576998A1 EP2576998A1 (en) | 2013-04-10 |
EP2576998B1 true EP2576998B1 (en) | 2014-06-25 |
Family
ID=42988388
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10005811A Withdrawn EP2392784A1 (en) | 2010-06-04 | 2010-06-04 | Steam turbine assembly and method of assembling a steam turbine |
EP11723933.5A Not-in-force EP2576998B1 (en) | 2010-06-04 | 2011-05-31 | Steam turbine assembly and method of assembling a steam turbine |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10005811A Withdrawn EP2392784A1 (en) | 2010-06-04 | 2010-06-04 | Steam turbine assembly and method of assembling a steam turbine |
Country Status (3)
Country | Link |
---|---|
EP (2) | EP2392784A1 (en) |
CN (1) | CN102933800B (en) |
WO (1) | WO2011151329A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120009058A1 (en) * | 2010-07-09 | 2012-01-12 | General Electric Company | Compressible supports for turbine engines |
WO2015156692A1 (en) * | 2014-04-11 | 2015-10-15 | General Electric Company | Adjustable wedge-shaped shim for an exhaust frame assembly of a turbomachine |
PL3299591T3 (en) | 2016-09-27 | 2020-05-18 | Siemens Aktiengesellschaft | Guide blade carrier, turbine casing and turbine |
CN106988794B (en) * | 2017-06-02 | 2018-12-14 | 中国航发南方工业有限公司 | Stator sub-assembly clamping means and stator sub-assembly |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB846918A (en) * | 1957-01-11 | 1960-09-07 | Power Jets Res & Dev Ltd | Shroud ring for an axial-flow compressor or turbine |
CH589799A5 (en) * | 1975-07-04 | 1977-07-15 | Bbc Brown Boveri & Cie | |
CH664191A5 (en) * | 1984-01-09 | 1988-02-15 | Bbc Brown Boveri & Cie | EXTERNAL ADJUSTABLE AXIAL FIXING OF A BLADE CARRIER IN A TURBINE. |
US6722846B2 (en) * | 2002-07-30 | 2004-04-20 | General Electric Company | Endface gap sealing of steam turbine bucket tip static seal segments and retrofitting thereof |
US7419355B2 (en) * | 2006-02-15 | 2008-09-02 | General Electric Company | Methods and apparatus for nozzle carrier with trapped shim adjustment |
US8070431B2 (en) * | 2007-10-31 | 2011-12-06 | General Electric Company | Fully contained retention pin for a turbine nozzle |
US8186947B2 (en) * | 2008-09-16 | 2012-05-29 | Honeywell International Inc. | Conical pin to maintain bearing system |
US8047779B2 (en) * | 2008-10-23 | 2011-11-01 | General Electric Company | Combined axial and transverse constraint and alignment system and method for rotary machines |
-
2010
- 2010-06-04 EP EP10005811A patent/EP2392784A1/en not_active Withdrawn
-
2011
- 2011-05-31 WO PCT/EP2011/058955 patent/WO2011151329A1/en active Application Filing
- 2011-05-31 EP EP11723933.5A patent/EP2576998B1/en not_active Not-in-force
- 2011-05-31 CN CN201180026690.2A patent/CN102933800B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN102933800B (en) | 2015-02-25 |
CN102933800A (en) | 2013-02-13 |
EP2576998A1 (en) | 2013-04-10 |
EP2392784A1 (en) | 2011-12-07 |
WO2011151329A1 (en) | 2011-12-08 |
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