EP1010857B1 - Modular steam turbine with standard blading - Google Patents

Modular steam turbine with standard blading Download PDF

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Publication number
EP1010857B1
EP1010857B1 EP98811231A EP98811231A EP1010857B1 EP 1010857 B1 EP1010857 B1 EP 1010857B1 EP 98811231 A EP98811231 A EP 98811231A EP 98811231 A EP98811231 A EP 98811231A EP 1010857 B1 EP1010857 B1 EP 1010857B1
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EP
European Patent Office
Prior art keywords
blading
nozzles
wheel
varied
control
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.)
Expired - Lifetime
Application number
EP98811231A
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German (de)
French (fr)
Other versions
EP1010857A1 (en
Inventor
Peter Graf
Maurus Herzog
Pierre Meylan
Harald Römer
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General Electric Switzerland GmbH
Original Assignee
Alstom Schweiz AG
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Filing date
Publication date
Application filed by Alstom Schweiz AG filed Critical Alstom Schweiz AG
Priority to DE59808650T priority Critical patent/DE59808650D1/en
Priority to EP98811231A priority patent/EP1010857B1/en
Priority to US09/458,701 priority patent/US6308407B1/en
Priority to JP11357355A priority patent/JP2000179301A/en
Publication of EP1010857A1 publication Critical patent/EP1010857A1/en
Application granted granted Critical
Publication of EP1010857B1 publication Critical patent/EP1010857B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F01D1/00—Non-positive-displacement machines or engines, e.g. steam turbines
    • F01D1/02—Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor, e.g. multi-bladed impulse steam turbines
    • F01D1/16—Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor, e.g. multi-bladed impulse steam turbines characterised by having both reaction stages and impulse stages
    • 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
    • F05D2230/61—Assembly methods using limited numbers of standard modules which can be adapted by machining
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49316—Impeller making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49316—Impeller making
    • Y10T29/4932—Turbomachine making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49716—Converting

Definitions

  • the present invention relates to the field of steam turbine technology. It relates to a method for producing a plurality of steam turbines for use in various applications, which are characterized by the respective thermodynamic parameters such as Cooling water temperature, ambient temperature, differentiate between given boiler data, process steam requirements, etc. wherein the steam turbines each have at least one high-pressure stage with a first Blading and have a control wheel stage for part-load operation.
  • the object is achieved by the entirety of the features from claim 1.
  • the essence of the invention is a fixed standard blading in the High pressure stage with a design that varies from application to application Combine control stage to match the steam turbine to the respective thermodynamic parameters of the application (e.g. condenser vacuum (Cooling water temperature), ambient temperatures, given boiler data of various Manufacturer, required process steam etc.). So limited the whole thermodynamic variability of the steam turbine in one only component (here: control wheel stage), both in terms of production technology, as well as procurement technology. Because especially the blading with the processing interface (Rotations) on the housing and shaft with regard to repetition effects has enormous potential for simplification and cost savings, a significant advantage is achieved by standardizing the blading.
  • a first preferred embodiment of the method according to the invention is characterized in that the steam turbines each have a central and have a low-pressure part with a second and third blading, and that as second and third blades also one for all steam turbines same standard blading is used.
  • standard blading will be an even greater simplification / saving achieved.
  • a second preferred embodiment of the method according to the invention is characterized by the fact that the control wheel stage sits on the rotor Control wheel and a plurality of concentrically arranged around the rotor axis Has nozzles, and that to design the control wheel stage, the control wheel and / or the arrangement and / or configuration of the nozzles can be varied.
  • a preferred development of this embodiment is characterized. that the number of nozzles is varied and / or that the geometry of the individual ones Nozzle is varied.
  • this Control wheel a third blading variation in which the wheel blade geometry, in particular the sheet thickness and / or the sheet height and / or the Curvature is varied.
  • the turbo group or steam turbine 10 comprises a high pressure part 11 with control wheel stage 13, a medium pressure part 12 and one (Optional) low-pressure part 22.
  • the steam turbine 10 drives a generator 23.
  • FIG. 2 is a longitudinal section of the example of a high-pressure part 11 with blading 16 and a control wheel stage arranged in front of the high-pressure part 11 13 shown, which are housed in a housing 21.
  • the rotating parts are arranged on a common rotor 18 which extends around a rotor axis 20 rotates.
  • the control wheel stage 13 contains one with its own blading (see in addition e.g. the US-A-4,812,107) equipped control wheel 19, which has a ring steam from an inflow duct 15 is acted upon by nozzles 14.
  • the number of nozzles 14 can be varied in particular in that Segments or sectors of the nozzle arrangement blind segments used become. Furthermore, the staggering angle of the nozzle profiles can be varied. Finally, a variation of the nozzle side wall contours is also conceivable.

Description

TECHNISCHES GEBIETTECHNICAL AREA

Die vorliegende Erfindung bezieht sich auf das Gebiet der Technik von Dampfturbinen. Sie betrifft ein Verfahren zum Herstellen einer Mehrzahl von Dampfturbinen für den Einsatz in verschiedenen Anwendungen, welche sich durch die jeweiligen thermodynamischen Parameter wie z.B. Kühlwassertemperatur, Umgebungstemperatur, gegebene Kesseldaten, Prozessdampfanforderung etc. unterscheiden, wobei die Dampfturbinen jeweils wenigstens eine Hochdruckstufe mit einer ersten Beschaufelung und eine Regelradstufe für den Teillastbetrieb aufweisen.The present invention relates to the field of steam turbine technology. It relates to a method for producing a plurality of steam turbines for use in various applications, which are characterized by the respective thermodynamic parameters such as Cooling water temperature, ambient temperature, differentiate between given boiler data, process steam requirements, etc. wherein the steam turbines each have at least one high-pressure stage with a first Blading and have a control wheel stage for part-load operation.

STAND DER TECHNIKSTATE OF THE ART

Bei der Herstellung von Dampfturbinen, die als Hochdruck(HD)-Einzelmaschinen oder als kombinierte Hochdruck/Mitteldruck(HDMD)-Maschinen vorliegen können, werden im Auftragsfall die Beschaufelungen des Hochdruck- und/oder Mitteldruckteils individuell an die für den jeweiligen Anwendungsfall erforderlichen bzw. spezifizierten Daten hin ausgelegt. Dazu gehört - wenn für den Teillastbetrieb eine Regelradstufe vorhanden ist - auch die individuelle Auslegung der Regelradstufe mit jeweils angepasster Kanalhöhe (des Radkanals) und angepasster Anzahl der Radschaufeln bzw. der in Strömungsrichtung vor dem Regelrad ringförmig angeordneten Düsen (zu Einzelheiten derartiger Regelradstufen sei an dieser Stelle beispielsweise auf die Druckschriften US-A-4,812,107, US-A-4,881,872 und US-A-4,979,873 verwiesen).In the manufacture of steam turbines used as high pressure (HD) individual machines or as combined high pressure / medium pressure (HDMD) machines, in the case of an order, the blading of the high pressure and / or medium pressure part individually to those required or required for the respective application specified data. This includes - if one for part-load operation Control wheel stage is available - also the individual design of the control wheel stage with each adjusted channel height (of the wheel channel) and adjusted number of Wheel blades or the ring arranged in the flow direction in front of the control wheel Nozzles (for details of such control wheel stages is here for example, US-A-4,812,107, US-A-4,881,872 and US-A-4,979,873 ) Directed.

Diese individuelle Anpassung der Dampfturbine hat zur Folge, dass bei jedem Auftrag neue kundenspezifische Fertigungsdokumente für die gesamte Beschaufelung inkl. der Kleinteile und der Regelradstufe erstellt werden müssen. Ein Wiederholeffekt bei der Fertigung, auch des Regelrades, ist damit weitgehend ausgeschlossen. Diese Vorgehensweise hat zwar den Vorteil, dass mit den bestehenden Auslegungswerkzeugen jede kundenspezifische Variation innerhalb der Beschaufelungen verwirklicht werden kann. Nachteilig ist jedoch, dass mögliche Kosteneinsparungspotentiale sehr klein sind und sich auf gestalterische Feinheiten innerhalb der durch die bestehenden Auslegungswerkzeuge gegebenen Möglichkeiten beschränken.This individual adaptation of the steam turbine has the consequence that for everyone Order new customer-specific production documents for the entire blading including the small parts and the control wheel stage must be created. A repeat effect in production, including the control wheel, is largely excluded. This procedure has the advantage that with the existing Design tools every customer-specific variation within the blading can be realized. The disadvantage, however, is that potential cost savings are very small and focus on subtleties within the possibilities given by the existing design tools restrict.

DARSTELLUNG DER ERFINDUNGPRESENTATION OF THE INVENTION

Es ist daher Aufgabe der Erfindung, ein Verfahren anzugeben, mit welchem auf einfache Weise und mit hohem Anteil an kostensparenden Standardbauteilen Dampfturbinen für unterschiedliche Anwendungsfälle und unterschiedliche thermodynamische Parameter hergestellt werden können.It is therefore an object of the invention to provide a method with which simple way and with a high proportion of cost-saving standard components Steam turbines for different applications and different thermodynamic Parameters can be established.

Die Aufgabe wird durch die Gesamtheit der Merkmale aus dem Anspruch 1 gelöst. Der Kern der Erfindung besteht darin, eine fixe Standardbeschaufelung in der Hochdruckstufe mit einer in der Auslegung von Anwendung zu Anwendung variierenden Regelradstufe zu kombinieren, um die Dampfturbine an die jeweiligen thermodynamischen Parameter des Anwendungsfalles (z.B. Kondensatorvakuum (Kühlwassertemperatur), Umgebungstemperaturen, gegebene Kesseldaten verschiedener Hersteller, benötigter Prozessdampf etc.) anzupassen. Damit beschränkt sich die ganze thermodynamische Variabilität der Dampfturbine auf eine einzige Komponente (hier: Regelradstufe), und zwar sowohl fertigungstechnisch, als auch beschaffungstechnisch. Da besonders die Beschaufelung mit der Bearbeitungsschnittstelle (Eindrehungen) an Gehäuse und Welle bezüglich Wiederholeffekten ein enormes Vereinfachungs- und Kosteneinsparungspotential aufweist, wird durch die Standardisierung der Beschaufelung ein erheblicher Vorteil erzielt.The object is achieved by the entirety of the features from claim 1. The essence of the invention is a fixed standard blading in the High pressure stage with a design that varies from application to application Combine control stage to match the steam turbine to the respective thermodynamic parameters of the application (e.g. condenser vacuum (Cooling water temperature), ambient temperatures, given boiler data of various Manufacturer, required process steam etc.). So limited the whole thermodynamic variability of the steam turbine in one only component (here: control wheel stage), both in terms of production technology, as well as procurement technology. Because especially the blading with the processing interface (Rotations) on the housing and shaft with regard to repetition effects has enormous potential for simplification and cost savings, a significant advantage is achieved by standardizing the blading.

Eine erste bevorzugte Ausführungsform des Verfahrens nach der Erfindung ist dadurch gekennzeichnet, dass die Dampfturbinen jeweils zusätzlich einen Mittelund einen Niederdruckteil mit einer zweiten und dritten Beschaufelung aufweisen, und dass als zweite und dritte Beschaufelung ebenfalls eine für alle Dampfturbinen gleiche Standardbeschaufelung verwendet wird. Durch den Einsatz solcher Standardbeschaufelungen wird in diesem Fall eine noch grössere Vereinfachung/Ersparnis erzielt.A first preferred embodiment of the method according to the invention is characterized in that the steam turbines each have a central and have a low-pressure part with a second and third blading, and that as second and third blades also one for all steam turbines same standard blading is used. By using such In this case, standard blading will be an even greater simplification / saving achieved.

Eine zweite bevorzugte Ausführungsform des erfindungsgemässen Verfahrens zeichnet sich dadurch aus, dass die Regelradstufe ein auf dem Rotor sitzendes Regelrad und eine Mehrzahl von konzentrisch um die Rotorachse herum angeordneten Düsen aufweist, und dass zur Auslegung der Regelradstufe das Regelrad und/oder die Düsen in ihrer Anordnung und/oder Ausgestaltung variiert werden.A second preferred embodiment of the method according to the invention is characterized by the fact that the control wheel stage sits on the rotor Control wheel and a plurality of concentrically arranged around the rotor axis Has nozzles, and that to design the control wheel stage, the control wheel and / or the arrangement and / or configuration of the nozzles can be varied.

Eine bevorzugte Weiterbildung dieser Ausführungsform ist dadurch gekennzeichnet. dass die Anzahl der Düsen variiert wird und/oder dass die Geometrie der einzeinen Düsen variiert wird.A preferred development of this embodiment is characterized. that the number of nozzles is varied and / or that the geometry of the individual ones Nozzle is varied.

Bei einer anderen bevorzugten Weiterbildung dieser Ausführungsform weist das Regelrad eine dritte Beschaufelungsvariation auf, bei welcher die Radschaufelgeometrie, insbesondere die Blattdicke und/oder die Blatthöhe und/oder die Krümmung, variiert wird.In another preferred development of this embodiment, this Control wheel a third blading variation in which the wheel blade geometry, in particular the sheet thickness and / or the sheet height and / or the Curvature is varied.

Weitere Ausführungsformen ergeben sich aus den abhängigen Ansprüchen. Further embodiments result from the dependent claims.

KURZE ERLÄUTERUNG DER FIGURENBRIEF EXPLANATION OF THE FIGURES

Die Erfindung soll nachfolgend anhand eines Ausführungsbeispiels im Zusammenhang mit der Zeichnung näher erläutert werden. Es zeigen

Fig. 1
die beispielhafte schematische Anordnung einer Turbogruppe bzw. Dampfturbine mit angeschlossenem Generator und Regelradstufe im Hochdruckteil, wie sie zur Verwirklichung des Verfahrens nach der Erfindung geeignet ist; und
Fig. 2
im Längschnitt den schematisierten Aufbau der Hochdruckstufe mit Regelrad nach Fig. 1.
The invention will be explained in more detail below using an exemplary embodiment in connection with the drawing. Show it
Fig. 1
the exemplary schematic arrangement of a turbo group or steam turbine with a connected generator and control wheel stage in the high pressure part, as is suitable for realizing the method according to the invention; and
Fig. 2
in longitudinal section the schematic structure of the high pressure stage with control wheel according to FIG. 1.

WEGE ZUR AUSFÜHRUNG DER ERFINDUNGWAYS OF CARRYING OUT THE INVENTION

In Fig. 1 ist eine beispielhafte schematische Anordnung einer Turbogruppe bzw. Dampfturbine mit angeschlossenem Generator und Regelradstufe im Hochdruckteil dargestellt, wie sie zur Verwirklichung des Verfahrens nach der Erfindung geeignet ist. Die Turbogruppe bzw. Dampfturbine 10 umfasst in diesem Beispiel einen Hochdruckteil 11 mit Regelradstufe 13 einen Mitteldruckteil 12 und einen (optionalen) Niederdruckteil 22. Die Dampfturbine 10 treibt einen Generator 23 an.1 shows an exemplary schematic arrangement of a turbo group or Steam turbine with connected generator and control wheel stage in the high pressure section shown how to implement the method according to the invention suitable is. In this example, the turbo group or steam turbine 10 comprises a high pressure part 11 with control wheel stage 13, a medium pressure part 12 and one (Optional) low-pressure part 22. The steam turbine 10 drives a generator 23.

In Fig. 2 ist im Längsschnitt das Beispiel eines Hochdruckteils 11 mit einer Beschaufelung 16 und einer vor dem Hochdruckteil 11 angeordneten Regelradstufe 13 gezeigt, die in einem Gehäuse 21 untergebracht sind. Die drehenden Teile sind auf einem gemeinsamen Rotor 18 angeordnet, der sich um eine Rotorachse 20 dreht. Die Regelradstufe 13 enthält ein mit einer eigenen Beschaufelung (siehe dazu z.B. die US-A-4,812,107) ausgestattetes Regelrad 19, das über einen Ring von Düsen 14 mit Dampf aus einem Einströmkanal 15 beaufschlagt wird. 2 is a longitudinal section of the example of a high-pressure part 11 with blading 16 and a control wheel stage arranged in front of the high-pressure part 11 13 shown, which are housed in a housing 21. The rotating parts are arranged on a common rotor 18 which extends around a rotor axis 20 rotates. The control wheel stage 13 contains one with its own blading (see in addition e.g. the US-A-4,812,107) equipped control wheel 19, which has a ring steam from an inflow duct 15 is acted upon by nozzles 14.

Im Rahmen der Erfindung werden bei der Dampfturbine 10 die Beschaufelung 16 des Hochdruckteils 11 und die Beschaufelung des Mitteldruckteils 12 als Standardbeschaufelungen ausgeführt, d.h., sie sind für unterschiedliche Anwendungsfälle mit unterschiedlichen thermodynamischen Parametern fix. Die fixe Standardbeschaufelung bedeutet dabei:

  • Die Geometrie der Schaufelblätter und der Deckbänder ist festgelegt und unveränderbar.
  • Die Eindrehungen für Lauf- und Leitschaufeln sind festgelegt und unveränderbar.
  • Die Position der Anzapfschlitze ist festgelegt und unveränderbar.
  • Die Stufenzahl und die Anzahl der Schaufeln pro Stufe am Umfang sind festgelegt und unveränderbar.
In the steam turbine 10, the blading 16 of the high-pressure part 11 and the blading of the medium-pressure part 12 are designed as standard blading, ie they are fixed for different applications with different thermodynamic parameters. The fixed standard blading means:
  • The geometry of the airfoils and the shrouds is fixed and cannot be changed.
  • The rotations for rotor and guide blades are fixed and cannot be changed.
  • The position of the tap slots is fixed and cannot be changed.
  • The number of stages and the number of blades per stage on the circumference are fixed and cannot be changed.

Die Anpassung der Dampfturbine 10 an die thermodynamischen Parameter des jeweiligen Anwendungsfalles beschränkt sich ausschliesslich auf die Regelradstufe 13. Hierbei können entweder das Regelrad 19, die Düsen,14 oder beide angepasst werden. Insbesondere bedeutet eine in der Auslegung variable Regelradstufe 13 (wahlweise):

  • Die Düsenzahl am Umfang pro HD-Einströmsektor ist variabel.
  • Die Düsen- und Radkanalhöhe ist entweder in festgelegten Stufungen oder stufenlos variierbar.
  • Die Radschaufelgeometrie des Regelrades 19 (Blattdicke und Krümmung) ist variabel.
The adaptation of the steam turbine 10 to the thermodynamic parameters of the respective application is limited to the control wheel stage 13. Either the control wheel 19, the nozzles 14, 14 or both can be adapted. In particular, a variable control wheel stage 13 (optional) means:
  • The number of nozzles on the circumference per HD inflow sector is variable.
  • The nozzle and wheel channel height can be varied either in fixed increments or continuously.
  • The wheel blade geometry of the control wheel 19 (blade thickness and curvature) is variable.

Die Zahl der Düsen 14 kann insbesondere dadurch variiert werden, dass in einzelnen Segmenten bzw. Sektoren der Düsenanordnung Blindsegmente eingesetzt werden. Weiterhin kann der Staffelungswinkel der Düsenprofile variiert werden. Schliesslich ist auch eine Variation der Düsenseitenwandkonturen denkbar.The number of nozzles 14 can be varied in particular in that Segments or sectors of the nozzle arrangement blind segments used become. Furthermore, the staggering angle of the nozzle profiles can be varied. Finally, a variation of the nozzle side wall contours is also conceivable.

Bei der gemeinsamen Anpassung von Regelrad 19 und Düsen 14 kann neben der Höhe auch deren Konizität oder deren Profil verändert werden. When adjusting the control wheel 19 and nozzles 14 in addition to the Height also their taper or their profile can be changed.

Insgesamt ergibt sich mit der Erfindung ein Herstellungsverfahren, das sich durch die folgenden Vorteile auszeichnet:

  • Es ergeben sich Wiederholeffekte für die gesamte Beschaufelung, sowohl bei der Beschaffung als auch bei der Fertigung.
  • Es ergeben sich Wiederholeffekte bei der Bearbeitung der Gehäuse und des Rotors. Dies drückt sich aus in konstanten, auftragsunabhängigen Fertigungsdokumenten (Guss- und Bearbeitungszeichnungen sowie Stücklisten).
  • Die Offertabwicklung ist vereinfacht, schneller und damit effizienter.
  • Es ergiben sich beachtliche Gesamtkosteneinsparungen gegenüber dem Stand der Technik von ca. 30-40% bezogen auf die Herstellungskosten.
Overall, the invention results in a production method which is distinguished by the following advantages:
  • There are repeat effects for the entire blading, both in procurement and in production.
  • There are repeat effects when machining the housing and the rotor. This is expressed in constant, order-independent production documents (casting and processing drawings as well as parts lists).
  • Offer processing is simplified, faster and therefore more efficient.
  • There are considerable total cost savings compared to the prior art of about 30-40% based on the manufacturing costs.

BEZUGSZEICHENLISTELIST OF REFERENCE NUMBERS

1010
Dampfturbinesteam turbine
1111
HochdruckteilHigh-pressure part
1212
MitteldruckteilMedium-pressure part
1313
Regelradstufecontrol-wheel stage
1414
Düsejet
1515
Einströmkanalinflow
1616
Beschaufelung (Hochdruckteil)Blading (high pressure part)
1818
Rotorrotor
1919
Regelradcontrol wheel
2020
Rotorachserotor axis
2121
Gehäusecasing
2222
NiederdruckteilLow-pressure part
2323
Generatorgenerator

Claims (8)

  1. Method of manufacturing a plurality of steam turbines (10) for use in various applications which differ in the respective thermodynamic parameters such as, for example, cooling-water temperature, ambient temperature, given boiler data, process-steam requirement, etc., the steam turbines (10) in each case having at least one high-pressure part (11) with first blading (16) and a control-wheel stage (13) for part-load operation, characterized in that standard blading, which is identical for all the steam turbines, is used as first blading (16), and in that the adaptation of the individual steam turbine (10) to the thermodynamic parameters of the respective application is carried out by appropriate design or variation of the control-wheel stage (13).
  2. Method according to Claim 1, characterized in that the steam turbines (10) in each case additionally have an intermediate-pressure part and a low-pressure part (12 and 22 resp.) having second blading (17) and third blading, and in that standard blading likewise identical for all the steam turbines (10) is used as second blading (17) and third blading.
  3. Method according to either of Claims 1 or 2, characterized in that the control-wheel stage (13) has a control wheel (19) sitting on the rotor (18) and a plurality of nozzles (14) arranged concentrically around the rotor axis (20), and in that, in order to design the control-wheel stage (13), the control wheel (19) and/or the nozzles (14) are varied in their arrangement and/or configuration.
  4. Method according to Claim 3, characterized in that the number of nozzles (14) is varied.
  5. Method according to Claim 4, characterized in that the nozzles (14) are distributed over individual circular segments or sectors, and in that the number of nozzles (14) is varied by the use of dummy segments.
  6. Method according to Claim 3, characterized in that the geometry of the individual nozzles (14) is varied.
  7. Method according to Claim 3, characterized in that the control wheel (19) and the nozzles (14) have flow contours which define limits on the hub side and cylinder side and which form a flow duct, which is varied in height in an infinite manner or in fixed steps.
  8. Method according to one of Claims 3 to 7, characterized in that the control wheel (13) [sic] has a blading variation, in which the wheel-blade geometry, in particular the blade-body thickness and/or the blade-body height and/or the curvature, are varied.
EP98811231A 1998-12-16 1998-12-16 Modular steam turbine with standard blading Expired - Lifetime EP1010857B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE59808650T DE59808650D1 (en) 1998-12-16 1998-12-16 Modular steam turbine with standard blading
EP98811231A EP1010857B1 (en) 1998-12-16 1998-12-16 Modular steam turbine with standard blading
US09/458,701 US6308407B1 (en) 1998-12-16 1999-12-13 Method of manufacturing a plurality of steam turbines for use in various applications
JP11357355A JP2000179301A (en) 1998-12-16 1999-12-16 Method of manufacturing multiplicity of steam turbines for use in various applications

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98811231A EP1010857B1 (en) 1998-12-16 1998-12-16 Modular steam turbine with standard blading

Publications (2)

Publication Number Publication Date
EP1010857A1 EP1010857A1 (en) 2000-06-21
EP1010857B1 true EP1010857B1 (en) 2003-06-04

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EP (1) EP1010857B1 (en)
JP (1) JP2000179301A (en)
DE (1) DE59808650D1 (en)

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WO2003027461A1 (en) * 2001-09-24 2003-04-03 Alstom Technology Ltd Gas turbine system for working fluid in the form of a carbon dioxide/water mixture
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US6308407B1 (en) 2001-10-30
EP1010857A1 (en) 2000-06-21
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DE59808650D1 (en) 2003-07-10

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