EP1022439A1 - Steam or gas turbine casing - Google Patents
Steam or gas turbine casing Download PDFInfo
- Publication number
- EP1022439A1 EP1022439A1 EP99810037A EP99810037A EP1022439A1 EP 1022439 A1 EP1022439 A1 EP 1022439A1 EP 99810037 A EP99810037 A EP 99810037A EP 99810037 A EP99810037 A EP 99810037A EP 1022439 A1 EP1022439 A1 EP 1022439A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flanges
- housing
- facing away
- wall thickness
- facing
- 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.)
- Granted
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
- F01D25/26—Double casings; Measures against temperature strain in casings
-
- 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
Definitions
- the invention relates to a housing for a steam or gas turbine, which consists of a shell and two flanges.
- Compressor housings for gas turbines which consist of a shell and two flanges. These housings have a pseudo flange in the upper and lower area of the shell.
- these have the disadvantage that, when the gas turbine is in operation, greater radial expansions occur due to the higher mean temperature in the area of the pseudo flange, and thus the housing deviates from its round shape.
- Housing for steam turbines are also known which consist of a shell and two flanges and which have vertical slots in the horizontal flanges.
- expensive constructions and assembly devices should be avoided.
- the object is achieved in that the shell has different wall thicknesses in an upper area facing away from the flanges, in two middle areas and in two lower areas facing towards the flanges, the wall thickness of the upper area facing away from the flanges compared to the wall thickness of the lower areas facing the flanges is reinforced and the wall thickness of the middle areas is variable, so that the upper area facing away from the flanges and the lower areas facing the flanges merge continuously into one another.
- An advantage of this invention is that the variation in the wall thickness of the shell of the housing significantly reduces deformation into an ellipsoidal shape both in the radial direction and in the axial direction.
- the housing thus has a small radial clearance between the housing and the ends of the turbine blades and thus has a significantly improved efficiency compared to the prior art. Overall, the invention achieves an improved efficiency of 0.2% to 0.3% of a steam turbine.
- the single figure shows a section through an embodiment of a housing according to the invention.
- the single figure shows a section through an embodiment of a Housing 1 according to the invention, which is used for steam or gas turbines becomes.
- the entire case consists of two equal halves, only one of which is shown.
- the housing 1 consists of a shell 2 and two flanges 3, which for attachment to the flanges of the second half of the Housing 1 is used.
- the wall thickness of the shell 2 varies in different areas.
- An upper area 5 facing away from the flanges is opposite the lower one Flanges facing areas 7 reinforced.
- In the illustrated embodiment corresponds to the wall thickness of the upper region 5 facing away from the flanges 1.5 times the wall thickness of the lower areas facing the flanges 7.
- the reinforcement of the area 5 facing away from the flanges no more than twice the Wall thickness of the lower areas 7 facing the flanges should have.
- the upper area 5 facing away from the flanges and the lower area facing the flanges facing regions 7 are marked on each side by a central region 6 connected.
- the wall thickness of these middle areas 6 varies, so that on each Since the two adjacent areas 5,7 merge continuously.
- the upper area facing away from the flanges 5 arranged at 45 ° around the central axis 4 of the housing 1. After that the middle area 6 adjoins on both sides with 15 °.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
Die Erfindung betrifft ein Gehäuse für eine Dampf- oder eine Gasturbine, welches aus einer Schale und zwei Flanschen besteht.The invention relates to a housing for a steam or gas turbine, which consists of a shell and two flanges.
Es sind Verdichtergehäuse für Gasturbinen bekannt, welche aus einer Schale und
zwei Flanschen bestehen. Diese Gehäuse weisen im oberen und unteren Bereich
der Schale einen Pseudoflansch auf. Diese haben aber den Nachteil, dass bei
Betrieb der Gasturbine aufgrund der höheren mittleren Temperatur im Bereich des
Pseudoflanschs grössere radiale Dehnungen auftreten und somit das Gehäuse von
seiner runden Form abweicht. Diese Verformungen führen zu einem verringerten
Wirkungsgrad, da sich der Spalt zwischen dem Gehäuse und den Enden der
Turbinenschaufeln vergrössert und an dieser Stelle Dampf oder Luft ungehindert
durchströmen kann, ohne Arbeit an der Turbine zu verrichten.
Es sind auch Gehäuse für Dampfturbinen bekannt, welche aus einer Schale und
zwei Flanschen bestehen und welche in den horizontalen Flanschen vertikale
Schlitze aufweisen. Das führt aber aufgrund der Temperaturverteilung in der Schale
und den Flanschen dazu, dass die Schale durch die Befestigung der massiven
Flansche mit Schrauben starken Verformungen unterworfen ist. Diese Verformungen
wirken sich sowohl radial als auch axial auf das Gehäuse aus. Radial wird aus der
runden Schalenform eine ellipsoide Form, indem sich die Schale nach oben
ausdehnt und die beiden Flansche leicht nach innen verschoben werden. Axial
wirken sich die radialen Effekte aufgrund der unterschiedlichen Temperaturverteilung
innerhalb des Gehäuses verschieden aus und führen so ebenfalls zu einer
Verformung. Diese Verformungen führen durch ein notwendiger vergrössertes
Radialspiel zwischen dem Gehäuse und den Enden der Turbinenschaufeln zu einem
geringeren Wirkungsgrad, da vermehrt Dampf ohne Arbeit an der Turbine zu
verrichten durchströmen kann. Die Schlitze, welche die Trennflansche aufweisen,
mindern insbesondere die axiale Verformung des Gehäuses, sind aber alleine nicht
ausreichend, um die radialen Verformungen und damit den verringerten
Wirkungsgrad zu verhindern.
Weiter sind Konstruktionen bekannt, welche die Verformung eines
Dampfturbinengehäuses durch Schrumpfringe verhindern. Diese Konstruktionen
haben aber den Nachteil, dass sie sehr teuer und spezielle Montagevorrichtungen
dafür nötig sind.Compressor housings for gas turbines are known which consist of a shell and two flanges. These housings have a pseudo flange in the upper and lower area of the shell. However, these have the disadvantage that, when the gas turbine is in operation, greater radial expansions occur due to the higher mean temperature in the area of the pseudo flange, and thus the housing deviates from its round shape. These deformations lead to reduced efficiency, since the gap between the housing and the ends of the turbine blades increases and steam or air can flow through at this point without hindrance, without doing any work on the turbine.
Housing for steam turbines are also known which consist of a shell and two flanges and which have vertical slots in the horizontal flanges. However, due to the temperature distribution in the shell and the flanges, this means that the shell is subjected to severe deformations by fastening the solid flanges with screws. These deformations affect the housing both radially and axially. Radially, the round shell shape becomes an ellipsoidal shape by expanding the shell upwards and slightly displacing the two flanges inwards. The radial effects have different axial effects due to the different temperature distribution within the housing and thus also lead to deformation. Due to the necessary increased radial play between the housing and the ends of the turbine blades, these deformations lead to lower efficiency, since more steam can flow through without performing work on the turbine. The slots which have the separating flanges in particular reduce the axial deformation of the housing, but are not sufficient on their own to prevent the radial deformations and thus the reduced efficiency.
Constructions are also known which prevent the deformation of a steam turbine housing by means of shrink rings. However, these designs have the disadvantage that they are very expensive and special assembly devices are required for this.
Es ist die Aufgabe der Erfindung, ein Gehäuse für eine Dampf- oder eine Gasturbine
zu konstruieren, welches seine runde Form in Betrieb beibehält oder nur
verhältnismässig geringe Verformungen aufweist, um so das Radialspiel zwischen
dem Gehäuse und den Enden der Turbinenschaufeln zu verkleinern und den damit
verbundenen geringeren Wirkungsgrad zu verhindern. Zudem sollen teure
Konstruktionen und Montagevorrichtungen vermieden werden.
Erfindungsgemäss wird die Aufgabe dadurch gelöst, dass die Schale verschiedene
Wandstärken in einem oberen, den Flanschen abgewandten Bereich, in zwei
mittleren Bereichen und in zwei unteren, den Flanschen zugewandten Bereichen
aufweist, wobei die Wandstärke des oberen, den Flanschen abgewandten Bereichs
gegenüber der Wandstärke der unteren, den Flanschen zugewandten Bereiche
verstärkt ist und die Wandstärke der mittleren Bereiche variabel ist, so dass der
obere, den Flanschen abgewandte Bereich und die unteren, den Flanschen
zugewandten Bereiche stetig ineinander übergehen.
Ein Vorteil dieser Erfindung liegt darin, dass durch die Variation der Wandstärke der
Schale des Gehäuses eine Verformung in eine ellipsoide Form sowohl in radialer
Richtung als auch in axialer Richtung deutlich vermindert wird. Das Gehäuse hat
somit einen geringes Radialspiel zwischen dem Gehäuse und den Enden der
Turbinenschaufeln und weist dadurch einen wesentlich verbesserten Wirkungsgrad
gegenüber dem Stand der Technik auf, Insgesamt wird durch die Erfindung ein
verbesserter Wirkungsgrad von 0.2 % bis 0.3 % einer Dampfturbine erreicht.It is the object of the invention to construct a housing for a steam or gas turbine, which maintains its round shape in operation or has only relatively small deformations, so as to reduce the radial play between the housing and the ends of the turbine blades and thus with them to prevent associated lower efficiency. In addition, expensive constructions and assembly devices should be avoided.
According to the invention the object is achieved in that the shell has different wall thicknesses in an upper area facing away from the flanges, in two middle areas and in two lower areas facing towards the flanges, the wall thickness of the upper area facing away from the flanges compared to the wall thickness of the lower areas facing the flanges is reinforced and the wall thickness of the middle areas is variable, so that the upper area facing away from the flanges and the lower areas facing the flanges merge continuously into one another.
An advantage of this invention is that the variation in the wall thickness of the shell of the housing significantly reduces deformation into an ellipsoidal shape both in the radial direction and in the axial direction. The housing thus has a small radial clearance between the housing and the ends of the turbine blades and thus has a significantly improved efficiency compared to the prior art. Overall, the invention achieves an improved efficiency of 0.2% to 0.3% of a steam turbine.
Weitere Ausgestaltungsmöglichkeiten der Erfindung sind Gegenstände der abhängigen Ansprüche.Further design options of the invention are the subject of dependent claims.
Die einzige Figur zeigt einen Schnitt durch eine Ausführungsform eines erfindungsgemässen Gehäuses.The single figure shows a section through an embodiment of a housing according to the invention.
Die einzige Figur zeigt einen Schnitt durch eine Ausführungsform eines
erfindungsgemässen Gehäuses 1, welches für Dampf- oder Gasturbinen verwendet
wird. Das gesamte Gehäuse besteht aus zwei gleichen Hälften, von denen nur eine
dargestellt ist. Das Gehäuse 1 besteht aus einer Schale 2 und zwei Flanschen 3,
welche zur Befestigung an den Flanschen der nicht dargestellten zweite Hälfte des
Gehäuses 1 dient. Die Wandstärke der Schale 2 variiert in verschiedenen Bereichen.
Ein oberer, den Flanschen abgewandter Bereich 5 ist gegenüber den unteren, den
Flanschen zugewandten Bereichen 7 verstärkt. In der dargestellten Ausführungsform
entspricht die Wanddicke des oberen, den Flanschen abgewandten Bereichs 5 der
1.5fachen Wandstärke der unteren, den Flanschen zugewandten Bereiche 7. Im
welchem Masse der obere Bereich verstärkt wird, kann aber verschieden sein und
hängt von der Auslegung der Turbine und somit vom Betriebsdruck und von der
Betriebstemperatur ab. Es hat sich allerdings gezeigt, dass die Verstärkung des
oberen, den Flanschen abgewandten Bereichs 5 nicht mehr als das zweifache der
Wandstärke der unteren, den Flanschen zugewandten Bereiche 7 haben sollte. Der
obere, den Flanschen abgewandte Bereich 5 und die unteren, den Flanschen
zugewandte Bereiche 7 werden auf jeder Seite durch einen mittleren Bereich 6
verbunden. Die Wandstärke dieser mittleren Bereiche 6 variiert, so dass auf jeder
Seite beide angrenzenden Bereiche 5,7 stetig ineinander übergehen. Vorteilhaft ist
im dargestellten Ausführungsbeispiel der obere, den Flanschen abgewandte Bereich
5 mit 45° um die mittlere Achse 4 des Gehäuses 1 angeordnet. Im Anschluss daran
schliesst sich zu beiden Seiten der mittlere Bereich 6 mit 15° an. Es sind aber auch
andere Winkel denkbar, um eine erfindungsgemässe Wirkung der Konstruktion zu
erhalten. Da die mittleren Bereiche 6 und besonders der obere, den Flanschen
abgewandte Bereich 5 durch die dickere Wandstärke steifer als die nicht verstärkten
unteren, den Flanschen zugewandten Bereiche 7 sind, lassen sie während des
Betriebs aufgrund der Temperaturverteilung weniger Verformungen zu. Die unteren,
den Flanschen zugewandten Bereiche 7 lassen sich mehr verformen und wirken wie
ein Gelenk, welches zwischen den sehr massiv ausgearbeiteten und mit Schrauben
befestigten Flanschen 3 und den teilverstärkten mittleren Bereichen 6 bzw. dem
verstärkten oberen, den Flanschen abgewandten Bereich 5 ausgleichend wirkt.
Insgesamt führt dies zu kleineren radialen und axialen Verformungen des Gehäuses
1 und so bleibt das Gehäuse 1 bei Betrieb der Turbine deutlich runder. Durch ein
kleineres Radialspiel zwischen dem Gehäuse 1 und den Enden der nicht
dargestellten Turbinenschaufeln wird so der Wirkungsgrad deutlich erhöht.The single figure shows a section through an embodiment of a
- 11
- Gehäusecasing
- 22nd
- SchaleBowl
- 33rd
- Flanschflange
- 44th
- Mittlere AchseMiddle axis
- 55
- Oberer Bereichupper area
- 66
- Mittlere BereicheMiddle areas
- 77
- Untere BereicheLower areas
Claims (4)
dadurch gekennzeichnet, dass
die Schale (2) verschiedene Wandstärken in einem oberen, den Flanschen abgewandten Bereich (5), in zwei mittleren Bereichen (6) und in zwei unteren, den Flanschen zugewandten Bereichen (7) aufweist, wobei
characterized in that
the shell (2) has different wall thicknesses in an upper area (5) facing away from the flanges, in two middle areas (6) and in two lower areas (7) facing the flanges, wherein
dadurch gekennzeichnet, dass
der obere, den Flanschen abgewandte Bereich (5) in einem Winkel von 45° um die Mittelachse (4) des Gehäuses (1) angeordnet ist und die mittleren Bereiche (6) sich mit einem Winkel von 15° daran anschliessen.Housing (1) according to claim 1,
characterized in that
the upper region (5) facing away from the flanges is arranged at an angle of 45 ° around the central axis (4) of the housing (1) and the central regions (6) adjoin it at an angle of 15 °.
dadurch gekennzeichnet, dass
die Wandstärke des oberen, den Flanschen abgewandten Bereichs (5) maximal das 2fache der Wandstärke der unteren, den Flanschen abgewandten Bereiche (7) hat.Housing (1) according to claim 3
characterized in that
the wall thickness of the upper area (5) facing away from the flanges has a maximum of twice the wall thickness of the lower area (7) facing away from the flanges.
dadurch gekennzeichnet, dass
die Wandstärke des oberen, den Flanschen abgewandten Bereichs (5) das 1.5fache der Wandstärke der unteren, den Flanschen abgewandten Bereiche (7) hat.Housing (1) according to claim 3,
characterized in that
the wall thickness of the upper area (5) facing away from the flanges has 1.5 times the wall thickness of the lower area (7) facing away from the flanges.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP99810037A EP1022439B1 (en) | 1999-01-20 | 1999-01-20 | Steam or gas turbine casing |
| DE59909395T DE59909395D1 (en) | 1999-01-20 | 1999-01-20 | Housing for a steam or gas turbine |
| US09/482,082 US6336789B1 (en) | 1999-01-20 | 2000-01-13 | Casing for a steam or gas turbine |
| JP2000008323A JP4347977B2 (en) | 1999-01-20 | 2000-01-17 | Casing for steam turbine or gas turbine |
| RU2000101728/06A RU2244835C2 (en) | 1999-01-20 | 2000-01-19 | Casing for steam or gas turbine |
| CN00100518.9A CN1268833C (en) | 1999-01-20 | 2000-01-20 | Casing of turbine or gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP99810037A EP1022439B1 (en) | 1999-01-20 | 1999-01-20 | Steam or gas turbine casing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1022439A1 true EP1022439A1 (en) | 2000-07-26 |
| EP1022439B1 EP1022439B1 (en) | 2004-05-06 |
Family
ID=8242634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99810037A Expired - Lifetime EP1022439B1 (en) | 1999-01-20 | 1999-01-20 | Steam or gas turbine casing |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6336789B1 (en) |
| EP (1) | EP1022439B1 (en) |
| JP (1) | JP4347977B2 (en) |
| CN (1) | CN1268833C (en) |
| DE (1) | DE59909395D1 (en) |
| RU (1) | RU2244835C2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH698879B1 (en) * | 2006-06-30 | 2009-11-30 | Alstom Technology Ltd | Turbomachine. |
| EP2189630A1 (en) * | 2008-11-19 | 2010-05-26 | Siemens Aktiengesellschaft | Gas turbine, guide vane support for such a gas turbine and gas or steam turbine plant with such a gas turbine |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE347023T1 (en) * | 2003-06-26 | 2006-12-15 | Alstom Technology Ltd | A REFLECTIVE TARGET HOLDER USED FOR MEASURING THE DEFLECTION OF A TURBINE HOUSING |
| EP1541810A1 (en) * | 2003-12-11 | 2005-06-15 | Siemens Aktiengesellschaft | Use of a thermal barrier coating for a part of a steam turbine and a steam turbine |
| DE102005015150A1 (en) * | 2005-03-31 | 2006-10-05 | Alstom Technology Ltd. | machine housing |
| US7681601B2 (en) * | 2005-08-24 | 2010-03-23 | Alstom Technology Ltd. | Inner casing of a rotating thermal machine |
| US8128353B2 (en) * | 2008-09-30 | 2012-03-06 | General Electric Company | Method and apparatus for matching the thermal mass and stiffness of bolted split rings |
| CH700679A1 (en) * | 2009-03-17 | 2010-09-30 | Alstom Technology Ltd | Support for a turbine. |
| EP2423454A1 (en) * | 2010-08-25 | 2012-02-29 | Siemens Aktiengesellschaft | Casing for a turbomachine and method of manufacture |
| US8342009B2 (en) | 2011-05-10 | 2013-01-01 | General Electric Company | Method for determining steampath efficiency of a steam turbine section with internal leakage |
| US9279342B2 (en) | 2012-11-21 | 2016-03-08 | General Electric Company | Turbine casing with service wedge |
| US9260281B2 (en) | 2013-03-13 | 2016-02-16 | General Electric Company | Lift efficiency improvement mechanism for turbine casing service wedge |
| JP2016113992A (en) * | 2014-12-16 | 2016-06-23 | 三菱重工業株式会社 | Pressure container and turbine |
| CN114017134A (en) * | 2021-11-12 | 2022-02-08 | 中国航发沈阳发动机研究所 | Method for adjusting thermal deformation rate of casing by changing thermal capacity of casing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2034825A (en) * | 1978-11-14 | 1980-06-11 | Rolls Royce | Casing for gas turbine engine |
| GB2035152A (en) * | 1978-11-27 | 1980-06-18 | United Technologies Corp | Method of fabricating a split case for a gas turbine engine |
| US4551065A (en) * | 1982-12-13 | 1985-11-05 | Becker John H | Composite horizontally or vertically split casing with variable casing ends |
| DE19544011A1 (en) * | 1995-11-27 | 1997-05-28 | Asea Brown Boveri | Gas turbine generator set |
| DE19806809C1 (en) * | 1998-02-18 | 1999-03-25 | Siemens Ag | Turbine housing for steam turbine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4900222A (en) * | 1988-12-23 | 1990-02-13 | Rockwell International Corporation | Rotary pump inlet velocity profile control device |
| US5605438A (en) * | 1995-12-29 | 1997-02-25 | General Electric Co. | Casing distortion control for rotating machinery |
-
1999
- 1999-01-20 DE DE59909395T patent/DE59909395D1/en not_active Expired - Lifetime
- 1999-01-20 EP EP99810037A patent/EP1022439B1/en not_active Expired - Lifetime
-
2000
- 2000-01-13 US US09/482,082 patent/US6336789B1/en not_active Expired - Lifetime
- 2000-01-17 JP JP2000008323A patent/JP4347977B2/en not_active Expired - Fee Related
- 2000-01-19 RU RU2000101728/06A patent/RU2244835C2/en not_active IP Right Cessation
- 2000-01-20 CN CN00100518.9A patent/CN1268833C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2034825A (en) * | 1978-11-14 | 1980-06-11 | Rolls Royce | Casing for gas turbine engine |
| GB2035152A (en) * | 1978-11-27 | 1980-06-18 | United Technologies Corp | Method of fabricating a split case for a gas turbine engine |
| US4551065A (en) * | 1982-12-13 | 1985-11-05 | Becker John H | Composite horizontally or vertically split casing with variable casing ends |
| DE19544011A1 (en) * | 1995-11-27 | 1997-05-28 | Asea Brown Boveri | Gas turbine generator set |
| DE19806809C1 (en) * | 1998-02-18 | 1999-03-25 | Siemens Ag | Turbine housing for steam turbine |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH698879B1 (en) * | 2006-06-30 | 2009-11-30 | Alstom Technology Ltd | Turbomachine. |
| US7762764B2 (en) | 2006-06-30 | 2010-07-27 | Alstom Technology Ltd. | Turbomachine |
| CN101096919B (en) * | 2006-06-30 | 2011-07-06 | 阿尔斯托姆科技有限公司 | Turbo machine |
| EP2189630A1 (en) * | 2008-11-19 | 2010-05-26 | Siemens Aktiengesellschaft | Gas turbine, guide vane support for such a gas turbine and gas or steam turbine plant with such a gas turbine |
| WO2010057698A1 (en) * | 2008-11-19 | 2010-05-27 | Siemens Aktiengesellschaft | Gas turbine |
| US9074490B2 (en) | 2008-11-19 | 2015-07-07 | Siemens Aktiengesellschaft | Gas turbine |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59909395D1 (en) | 2004-06-09 |
| JP2000213305A (en) | 2000-08-02 |
| CN1261643A (en) | 2000-08-02 |
| JP4347977B2 (en) | 2009-10-21 |
| CN1268833C (en) | 2006-08-09 |
| US6336789B1 (en) | 2002-01-08 |
| RU2244835C2 (en) | 2005-01-20 |
| EP1022439B1 (en) | 2004-05-06 |
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