EP1781901A1 - Steam turbine comprising two steam chambers - Google Patents

Steam turbine comprising two steam chambers

Info

Publication number
EP1781901A1
EP1781901A1 EP05777733A EP05777733A EP1781901A1 EP 1781901 A1 EP1781901 A1 EP 1781901A1 EP 05777733 A EP05777733 A EP 05777733A EP 05777733 A EP05777733 A EP 05777733A EP 1781901 A1 EP1781901 A1 EP 1781901A1
Authority
EP
European Patent Office
Prior art keywords
housing
steam
steam turbine
turbine according
partial surfaces
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
Application number
EP05777733A
Other languages
German (de)
French (fr)
Other versions
EP1781901B1 (en
Inventor
Max Wiesenberger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to PL05777733T priority Critical patent/PL1781901T3/en
Priority to EP05777733A priority patent/EP1781901B1/en
Publication of EP1781901A1 publication Critical patent/EP1781901A1/en
Application granted granted Critical
Publication of EP1781901B1 publication Critical patent/EP1781901B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • 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
    • F01D1/023—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 the working-fluid being divided into several separate flows ; several separate fluid flows being united in a single flow; the machine or engine having provision for two or more different possible fluid flow paths
    • 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
    • F05D2220/00—Application
    • F05D2220/30—Application in turbines
    • F05D2220/31—Application in turbines in steam turbines
    • 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
    • F05D2240/10—Stators
    • F05D2240/14—Casings or housings protecting or supporting assemblies within
    • 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
    • F05D2250/30—Arrangement of components
    • F05D2250/31—Arrangement of components according to the direction of their main axis or their axis of rotation
    • F05D2250/314—Arrangement of components according to the direction of their main axis or their axis of rotation the axes being inclined in relation to each other
    • 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
    • F05D2250/50—Inlet or outlet
    • 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
    • F05D2250/50—Inlet or outlet
    • F05D2250/51—Inlet
    • 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
    • F05D2250/50—Inlet or outlet
    • F05D2250/52—Outlet

Definitions

  • the invention relates to a steam turbine with two
  • Steam chambers which are surrounded by a substantially tubular housing and separated by at least one arranged in the housing partition.
  • the partitions which separate the steam rooms from each other, must be easy to produce while still withstand the pressure occurring permanently.
  • the connections must be designed with cross-sectional areas which, in accordance with the quantities of fluid to be led through the steam chambers, are often comparatively large.
  • the outer surfaces of the individual steam rooms are in part only relatively narrow strips, on which there is not enough space for arranging said connections.
  • the invention has for its object to provide a generic steam turbine to which results in the partitions particularly low thermal stresses, but at the same time is made very compact.
  • the object is achieved according to the invention with a steam turbine mentioned above, in which the partition wall is designed from at least two planar partial surfaces, which are designed inclined relative to each other.
  • the dividing wall to be provided in a housing of a steam turbine is not designed solely as a flat or curved surface, but rather folds or creases are specifically formed in the dividing wall, against which planar partial surfaces adjoin one another.
  • the walls folded in this way can actually be produced by a folding process or by joining two planar pieces, for example by welding.
  • the dividing walls according to the invention and in particular their flat part surfaces expand uniformly without any particular shape change and no additional stresses are generated on the associated housing.
  • the wrinkles further lead to a stiffening of the walls and allow, as will be explained in more detail below, a more flexible distribution of the steam rooms.
  • a flat partial surface of a partition wall can be extended out of the actual housing region and therefore form part of a wall of a connecting piece on the housing. This results in a more favorable introduction of external support forces in the housing structure.
  • the folds according to the invention are particularly advantageously designed as straight folding edges, on which partial surfaces adjoin one another.
  • Such straight folding edges can be produced inexpensively by simple buckling or by welding straight plate edges.
  • the partial surfaces designed according to the invention with folded edges adjoin one another at folded edges, which are arranged asymmetrically relative to a longitudinal axis of the tubular housing. This ensures that the partitions according to the invention are constructed in particular not rotationally symmetrical.
  • Such a design is in terms of at
  • a dividing wall according to the invention which is particularly cost-effective to develop and produce is characterized in that it is designed with a central partial surface, on which several further partial surfaces distributed over the circumference join, which are inclined to the central partial surface. While the central partial surface for separating the steam chambers is provided directly on a rotor rotating in the housing, the further partial surfaces distributed around this central partial surface can be arranged differently inclined depending on the space requirement in the respective steam chambers and on the surrounding tubular housing. At the same time comparatively simple FaIt- and / or joint edges. Further standardization of the partition walls according to the invention and a reduction of costs associated therewith is possible by connecting inclined partial surfaces which are of equal size distributed over the circumference of the central partial surface. In this case, the above-mentioned asymmetrical shape of the partitions according to the invention can be achieved particularly advantageously by three inclined faces.
  • These three inclined partial surfaces may, for example, advantageously be arranged on one side of a substantially rectangular central partial surface, wherein the central partial surface is designed to continue even on the fourth side of the substantially rectangular basic shape until the housing is continued.
  • the central surface is oriented substantially perpendicular to a longitudinal axis of the tubular housing and thus perpendicular to a rotor rotating in the housing.
  • the invention proposes that in a generic steam turbine at least two connections for steam on the housing are designed such that one of Vapor spaces starting from an associated connection into the housing has decreasing cross-sectional areas or widths while the vapor space located beyond the partition wall has in the direction of an associated connection out of the housing enlarging cross-sectional areas or widths.
  • the decreasing cross-sectional areas are thus arranged directly adjacent to increasing cross-sectional areas and thus lead to a total of a particularly compact and space-saving design of such inventive
  • the tubular housing With a very limited axial length of the tubular housing sufficient space for the placement of terminals can be created by the inventive design of parting surfaces on the outer sides of the housing.
  • the cross-sectional profiles along the flow paths in the individual steam chambers can be designed in accordance with the area requirement which, for example, decreases at an inlet with increasing distance from the inlet nozzle.
  • the area with low space requirement is one
  • FIG. 1 shows a half section of an embodiment of a housing with partitions of a steam turbine according to the invention
  • FIG. 2 is a side view of the housing of FIG. 1,
  • FIG. 3 shows the section III-III in Fig. 1
  • 4 shows the section IV-IV in Fig. 1
  • FIG. 5 is a view of the parting line of the lower part of the housing and the partitions of FIG. 1,
  • FIG. 6 is a perspective view of the partitions of the steam turbine of FIG. 1,
  • Fig. 7 is a broken perspective view of the housing with partitions of FIG. 1 and
  • Fig. 8 is a perspective view of the housing of FIG. 1 from the outside.
  • the housing 12 is substantially tubular in shape along a longitudinal axis 16 and has on its outside a steam inlet 18 in the form of a nozzle.
  • steam outlets 20 and 22 are further arranged, which serve as taps for branching preheat steam.
  • the housing 12 is divided into a total of four partitions 14a, 14b, 14c and 14d in five steam rooms 24a to 24e, in which the steam inlet 18 in the
  • Steam chamber 24c opens from the steam rooms 24b and 24d each have a "small” steam outlet 20 and lead out of the steam chambers 24a and 24e each have two “large” steam outlets 22.
  • the flow of steam through the housing 12 is guided in the region of the steam chambers 24b and 24d by a respective pipe section 30, with which the partitions 14a and 14b or 14c and 14d are connected to each other in the region of the associated openings 26 ,
  • the steam turbine 10 is designed to be particularly compact in the axial direction and thus a particularly cost-effective, short distance between associated (not shown) bearings of the steam turbine rotor is achieved and also the housing 12 and the partitions 14 at
  • the partitions 14 are each formed of individual flat faces 32, which are arranged inclined to the longitudinal axis 16 by a respective central part surface 34.
  • the outer partial surfaces 32 of the vapor space 24c are inclined on the side of the steam inlet 18 in such a way that the steam inlet 18 has cross-sectional widths or areas which decrease in the housing 12.
  • Partitions 14b and 14c inclined to each other such that the cross-sectional widths or areas of the vapor space 24c with increasing distance from the steam inlet 18 further decrease.
  • the central partial surfaces 34 of the partition walls 14b and 14c are aligned perpendicular to the longitudinal axis 16.
  • the partitions 14a and 14d are each designed as "shells" which three outer inclined inclined surfaces 32 are formed on a central part surface 34.
  • the outer partial surfaces 32 of the partition walls 14a and 14d are each inclined in the axial direction to the front side openings 28 of the associated steam chambers 24a and 24e.
  • the upper outer partial surface 32 of the partition walls 14a and 14d extends in each case substantially parallel to the upper outer partial surfaces 32 of the partition walls 14b and 14c (see also FIG. 1, upper half).
  • lower portion of the partitions 14 is by the mutually inclined outer faces 32 of the partitions 14b and 14c and perpendicular to the longitudinal axis 16 to bottom extending central face 34 of the partitions 14a and 14d, a widening of the steam chambers 24b and 24d in the direction reached on the "small" steam outlet 20.
  • annular steam chambers 24b and 24d in the direction of the steam outlets 20th
  • two steam outlets 22 are provided at the bottom. These steam outlets 22 are located in a region of the steam chambers 24a and 24e, respectively, where the steam chambers 24a and 24e are particularly wide in the axial direction because of the shape of the partition walls 14a and 14d. In contrast, in the upper and lateral regions, the steam chambers 24a and 24e are comparatively narrow because of the three outer partial surfaces 32 grouped around the central partial surface 34 on the partition walls 14a and 14d.
  • access openings or manholes 38 are formed on the housing 12 just above the parting line of the lower part, which because of the selected shape of the partitions 14 provides a particularly easy access and good access to the areas to be machined inside allow the housing 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

The steam turbine (10) has at least two steam chambers (24a-e) which are enclosed by a tubular casing (12) and separated from one another by at least one partition (14a-d). The partition is constructed from at least two flat part surfaces which are inclined relative to one another. The part surfaces are joined to another by at least one straight fold edge. The part surfaces in their inclination with regard to the longitudinal axis (16) of the casing are arranged non-symmetrically, especially non-axially symmetrically.

Description

Beschreibungdescription
Dampfturbine mit zwei DampfräumenSteam turbine with two steam rooms
Die Erfindung betrifft eine Dampfturbine mit zweiThe invention relates to a steam turbine with two
Dampfräumen, die von einem im Wesentlichen rohrförmigen Gehäuse umgeben und durch mindestens eine in dem Gehäuse angeordnete Trennwand voneinander getrennt sind.Steam chambers, which are surrounded by a substantially tubular housing and separated by at least one arranged in the housing partition.
Bei Dampfturbinen der oben genannten Art sind in zylindrischen Turbinengehäusen einzelne Dampfräume durch Trennwände abgetretnnt. Zum Zu- und Abführen von Dampf an den Dampfräumen sind am Gehäuse Anschlüsse vorgesehen.In steam turbines of the type mentioned above, individual steam rooms are separated by partition walls in cylindrical turbine housings. For the supply and removal of steam at the steam chambers connections are provided on the housing.
Die Trennwände, welche die Dampfräume voneinander trennen, müssen dabei einfach herstellbar sein und trotzdem der auftretenden Druckbeanspruchung dauerhaft standhalten. Die Anschlüsse müssen mit Querschnittsflächen gestaltet sein, die entsprechend den durch die Dampfräume zu führenden Fluidmengen oft vergleichsweise groß dimensioniert sind.The partitions, which separate the steam rooms from each other, must be easy to produce while still withstand the pressure occurring permanently. The connections must be designed with cross-sectional areas which, in accordance with the quantities of fluid to be led through the steam chambers, are often comparatively large.
Ein großes Problem bei der Gestaltung der Gehäuse und der zugehörigen Trennwände stellen ferner dieA major problem in the design of the housing and the associated partitions are also the
WärmedehnungsSpannungen dar, die sich an den Dampfturbinen wegen der hohen Temperaturunterschiede ergeben.Thermal expansion stresses that arise at the steam turbine because of the high temperature differences.
Bei bekannten Dampfturbinen sind die einzelnen Dampfräume mit rotationssystemmetrischen, kegelförmigen Wänden abgetrennt, an denen sich bei Temperatureinwirkung durch Wärmedehnung die Kegelwinkel aufweiten. Dies führt zu verhältnismäßig hohen DehnungsSpannungen an den Trennwänden.In known steam turbines, the individual steam rooms are separated by rotational system-metric, conical walls on which the cone angle widen when exposed to heat due to thermal expansion. This leads to relatively high strain voltages on the partitions.
Darüber hinaus sind bei bekannten Gehäusen die Außenflächen der einzelnen Dampfräume teilweise nur verhältnismäßig schmale Streifen, an denen nicht ausreichend Raum zum Anordnen der genannten Anschlüsse vorhanden ist. Der Erfindung liegt die Aufgabe zugrunde, eine gattungsgemäße Dampfturbine bereitzustellen, an der sich an den Trennwänden besonders geringe Wärmespannungen ergeben, die aber zugleich besonders kompakt gestaltet ist.Moreover, in known housings, the outer surfaces of the individual steam rooms are in part only relatively narrow strips, on which there is not enough space for arranging said connections. The invention has for its object to provide a generic steam turbine to which results in the partitions particularly low thermal stresses, but at the same time is made very compact.
Die Aufgabe ist erfindungsgemäß mit einer eingangs genannten Dampfturbine gelöst, bei der die Trennwand aus mindestens zwei ebenen Teilflächen gestaltet ist, die relativ zueinander geneigt gestaltet sind.The object is achieved according to the invention with a steam turbine mentioned above, in which the partition wall is designed from at least two planar partial surfaces, which are designed inclined relative to each other.
Erfindungsgemäß ist die in einem Gehäuse einer Dampfturbine vorzusehene Trennwand nicht allein als ebene oder als gekrümmte Fläche gestaltet, sondern es sind gezielt Falten bzw. Knicke in der Trennwand ausgebildet, an denen ebene Teilflächen aneinander angrenzen. Die derart gefalteten Wände können je nach Größe und Dicke der Trennwand tatsächlich durch einen Faltvorgang oder durch Verbinden zweier ebener Stücke, beispielsweise durch Schweißen, hergestellt werden. Durch die Falten dehnen sich die erfindungsgemäßen Trennwände und insbesondere deren ebene Teilflächen gleichmäßig ohne besondere Gestaltänderung aus und es werden am zugehörigen Gehäuse keine zusätzlichen Spannungen erzeugt. Die Falten führen ferner zu einer Versteifung der Wände und ermöglichen, wie nachfolgend noch genauer erläutert wird, eine flexiblere Aufteilung der Dampfräume. Bei entsprechender Gestaltung kann eine ebene Teilfläche einer Trennwand aus dem eigentlichen Gehäusebereich hinaus verlängert werden und darum einen Teil einer Wand eines Anschlussstutzens am Gehäuse bilden. Dadurch ergibt sich eine günstigere Einleitung von äußeren Stutzenkräften in die Gehäusestruktur.According to the invention, the dividing wall to be provided in a housing of a steam turbine is not designed solely as a flat or curved surface, but rather folds or creases are specifically formed in the dividing wall, against which planar partial surfaces adjoin one another. Depending on the size and thickness of the partition wall, the walls folded in this way can actually be produced by a folding process or by joining two planar pieces, for example by welding. As a result of the folds, the dividing walls according to the invention and in particular their flat part surfaces expand uniformly without any particular shape change and no additional stresses are generated on the associated housing. The wrinkles further lead to a stiffening of the walls and allow, as will be explained in more detail below, a more flexible distribution of the steam rooms. With a corresponding design, a flat partial surface of a partition wall can be extended out of the actual housing region and therefore form part of a wall of a connecting piece on the housing. This results in a more favorable introduction of external support forces in the housing structure.
Die erfindungsgemäßen Falten sind besonders vorteilhaft als gerade Faltkanten gestaltet, an denen Teilflächen aneinander anschließen. Solche geraden Faltkanten können kostengünstig durch einfaches Knicken oder durch Verschweißen von geraden Plattenkanten hergestellt werden. Darüber hinaus ist es vorteilhaft, wenn die erfindungsgemäß mit Faltkanten gestalteten Teilflächen an Faltkanten aneinander anschließen, die bezogen auf eine Längsachse des rohrförmigen Gehäuses unsymmetrisch angeordnet sind. Damit wird erreicht, dass die erfindungsgemäßen Trennwände insbesondere nicht rotationssymmetrisch aufgebaut sind. Eine solche Gestaltung ist hinsichtlich der beiThe folds according to the invention are particularly advantageously designed as straight folding edges, on which partial surfaces adjoin one another. Such straight folding edges can be produced inexpensively by simple buckling or by welding straight plate edges. Moreover, it is advantageous if the partial surfaces designed according to the invention with folded edges adjoin one another at folded edges, which are arranged asymmetrically relative to a longitudinal axis of the tubular housing. This ensures that the partitions according to the invention are constructed in particular not rotationally symmetrical. Such a design is in terms of at
Temperaturbehaltung sich ergebenen WärmedehnungsSpannungen besonders von Vorteil.Temperature retention resulting thermal expansion voltages particularly beneficial.
Darüber hinaus ist es hinsichtlich der Entstehung von Spannungen an der Gehäusestruktur der erfindungsgemäßen Dampfturbine ferner vorteilhaft, wenn die Teilflächen auch in ihrer Neigung bezogen auf eine Längsachse des rohrförmigen Gehäuses unsymmetrisch insbesondere nicht rotationssymmetrisch angeordnet sind. Solche hinsichtlich der Längsachse des rohrförmigen Gehäuses unsymmetrisch geneigte Teilflächen ermöglichen durch eine flexible Gestaltung über den Umfang des Gehäuses hinweg insbesondere auch eine bessere Platzierung von Einstiegsöffnungen, so genannten Mannlöchern, wodurch über die Betriebsdauer der Dampfturbine hinweg die relevanten Bereiche im Inneren des Gehäuses besser erreichbar sind.In addition, it is also advantageous in terms of the formation of stresses on the housing structure of the steam turbine according to the invention, when the partial surfaces are arranged unbalanced, in particular not rotationally symmetrical in terms of their inclination relative to a longitudinal axis of the tubular housing. Such with respect to the longitudinal axis of the tubular housing asymmetrically inclined partial surfaces allow flexible design over the circumference of the housing away in particular a better placement of manholes, so-called manholes, which over the operating life of the steam turbine away the relevant areas inside the housing are better accessible ,
Eine besonders kostengünstig zu entwickelnde und herzustellende erfindungsgemäße Trennwand ist dadurch gekennzeichnet, dass sie mit einer zentralen Teilfläche gestaltet ist, an der über den Umfang verteilt mehrere weitere Teilflächen anschließen, die zur zentralen Teilfläche geneigt sind. Während die zentrale Teilfläche zum Abtrennen der Dampfräume unmittelbar an einem in dem Gehäuse sich drehenden Rotor vorgesehen ist, können die um diese zentrale Teilfläche herum verteilten weiteren Teilflächen je nach Platzbedarf in den jeweiligen Dampfräumen und an dem umgebenden rohrförmigen Gehäuse verschieden geneigt angeordnet werden. Zugleich ergeben sich vergleichsweise einfache FaIt- und/oder Verbindungskanten. Eine weitere Standardisierung der erfindungsgemäßen Trennwände und eine damit verbundene Reduzierung von Kosten ist möglich, indem an der zentralen Teilfläche über deren Umfang verteilt geneigte Teilflächen anschließen, die gleich groß sind. Dabei kann die oben genannte unsymmetrische Gestalt der erfindungsgemäßen Trennwände besonders vorteilhaft durch drei geneigte Teilflächen erzielt werden.A dividing wall according to the invention which is particularly cost-effective to develop and produce is characterized in that it is designed with a central partial surface, on which several further partial surfaces distributed over the circumference join, which are inclined to the central partial surface. While the central partial surface for separating the steam chambers is provided directly on a rotor rotating in the housing, the further partial surfaces distributed around this central partial surface can be arranged differently inclined depending on the space requirement in the respective steam chambers and on the surrounding tubular housing. At the same time comparatively simple FaIt- and / or joint edges. Further standardization of the partition walls according to the invention and a reduction of costs associated therewith is possible by connecting inclined partial surfaces which are of equal size distributed over the circumference of the central partial surface. In this case, the above-mentioned asymmetrical shape of the partitions according to the invention can be achieved particularly advantageously by three inclined faces.
Diese drei geneigten Teilflächen können zum Beispiel vorteilhaft an jeweils einer Seite einer im Wesentlichen rechteckigen zentralen Teilfläche angeordnet sein, wobei die zentrale Teilfläche selbst an der vierten Seite der im Wesentlichen rechteckigen Grundform eben bis an das Gehäuse fortgesetzt gestaltet ist.These three inclined partial surfaces may, for example, advantageously be arranged on one side of a substantially rectangular central partial surface, wherein the central partial surface is designed to continue even on the fourth side of the substantially rectangular basic shape until the housing is continued.
Hinsichtlich der erfindungsgemäßen Trennwand ist es ferner vorteilhaft, wenn die zentrale Fläche im Wesentlichen senkrecht zu einer Längsachse des rohrförmigen Gehäuses und damit senkrecht zu einem sich in dem Gehäuse drehenden Rotor ausgerichtet ist.With regard to the partition according to the invention, it is also advantageous if the central surface is oriented substantially perpendicular to a longitudinal axis of the tubular housing and thus perpendicular to a rotor rotating in the housing.
Wie bereits oben angedeutet worden ist, kann mit den erfindungsgemäß geneigt gestalteten Teilflächen auch ein am Gehäuse als Anschluss dienender Stutzen zumindest teilweise ausgebildet werden. Darüber hinaus ist es auch vorteilhaft, wenn mit einer der geneigten Teilflächen im Inneren des Gehäuses ein zumindest einseitig trichterförmiger Einlass oder Auslass gebildet ist. Derartige trichterförmige Ein- oder Auslässe ergeben an der erfindungsgemäßen Dampfturbine die strömungstechnisch jeweils gewünschte Verengung oder Aufweitung der Querschnittsflächen der zugehörigen Strömungswege.As has already been indicated above, can be at least partially formed with the invention designed inclined part surfaces and a serving as a connection on the housing stub. Moreover, it is also advantageous if with one of the inclined partial surfaces in the interior of the housing, an at least one funnel-shaped inlet or outlet is formed. Such funnel-shaped inlets or outlets produce at the steam turbine according to the invention the flow-wise desired narrowing or widening of the cross-sectional areas of the associated flow paths.
Darüber hinaus wird erfindungsgemäß vorgeschlagen, dass bei einer gattungsgemäßen Dampfturbine mindestens zwei Anschlüsse für Dampf am Gehäuse derart gestaltet sind, dass einer der Dampfräume ausgehend von einem zugehörigen Anschluss in das Gehäuse hinein sich verkleinernde Querschnittsflächen bzw. -breiten aufweist während der jenseits der Trennwand befindliche Dampfraum in Richtung auf einen zugehörigen Anschluss aus dem Gehäuse heraus sich vergrößernde Querschnittsflächen bzw. -breiten aufweist. Die sich verkleinernden Querschnittsflächen sind also unmittelbar neben sich vergrößernden Querschnittsflächen angeordnet und führen so insgesamt zu einer besonders kompakten und raumsparenden Bauweise einer solchen erfindungsgemäßenIn addition, the invention proposes that in a generic steam turbine at least two connections for steam on the housing are designed such that one of Vapor spaces starting from an associated connection into the housing has decreasing cross-sectional areas or widths while the vapor space located beyond the partition wall has in the direction of an associated connection out of the housing enlarging cross-sectional areas or widths. The decreasing cross-sectional areas are thus arranged directly adjacent to increasing cross-sectional areas and thus lead to a total of a particularly compact and space-saving design of such inventive
Dampfturbine. Insbesondere bei einer sehr begrenzten axialen Baulänge des rohrförmigen Gehäuses kann durch die erfindungsgemäße Gestaltung von Trennflächen an den Außenseiten des Gehäuses genügend Raum für die Platzierung von Anschlüssen geschaffen werden. Zugleich können die Querschnittsverläufe entlang der Strömungswege in den einzelnen Dampfräumen entsprechend dem beispielsweise bei einem Einlass mit wachsender Entfernung vom Einlassstutzen abnehmenden Flächenbedarf ausgelegt werden. Erfindungsgemäß liegt der Bereich mit geringem Flächenbedarf einesSteam turbine. In particular, with a very limited axial length of the tubular housing sufficient space for the placement of terminals can be created by the inventive design of parting surfaces on the outer sides of the housing. At the same time, the cross-sectional profiles along the flow paths in the individual steam chambers can be designed in accordance with the area requirement which, for example, decreases at an inlet with increasing distance from the inlet nozzle. According to the invention, the area with low space requirement is one
Dampfraumes neben dem Bereich mit großem Flächenbedarf des benachbarten Dampfraumes . Es ergibt sich damit eine vergleichsweise kurze Baulänge des rohrförmigen Gehäuses mit einer besonders günstigen Bauraumausnutzung.Steam room next to the area with large area requirements of the adjacent steam room. This results in a comparatively short length of the tubular housing with a particularly favorable space utilization.
Nachfolgend wird ein Ausführungsbeispiel einer erfindungsgemäßen Dampfturbine anhand der beigefügten schematischen Zeichnungen näher erläutert. Es zeigt:Hereinafter, an embodiment of a steam turbine according to the invention will be explained in more detail with reference to the accompanying schematic drawings. It shows:
Fig. 1 einen Halbschnitt eines Ausführungsbeispiels eines Gehäuses mit Trennwänden einer erfindungsgemäßen Dampfturbine,1 shows a half section of an embodiment of a housing with partitions of a steam turbine according to the invention,
Fig. 2 eine Seitenansicht des Gehäuses gemäß Fig. 1,2 is a side view of the housing of FIG. 1,
Fig. 3 den Schnitt III-III in Fig. 1, Fig. 4 den Schnitt IV-IV in Fig. 1,3 shows the section III-III in Fig. 1, 4 shows the section IV-IV in Fig. 1,
Fig. 5 eine Ansicht auf die Teilfuge des Unterteils des Gehäuses und der Trennwände gemäß Fig. 1,5 is a view of the parting line of the lower part of the housing and the partitions of FIG. 1,
Fig. 6 eine perspektivische Ansicht der Trennwände der Dampfturbine gemäß Fig. 1,6 is a perspective view of the partitions of the steam turbine of FIG. 1,
Fig. 7 eine aufgebrochene perspektivische Ansicht des Gehäuses mit Trennwänden gemäß Fig. 1 undFig. 7 is a broken perspective view of the housing with partitions of FIG. 1 and
Fig. 8 eine perspektivische Ansicht des Gehäuses gemäß Fig. 1 von Außen.Fig. 8 is a perspective view of the housing of FIG. 1 from the outside.
In den Figuren sind von einer Dampfturbine 10 die für dieIn the figures, of a steam turbine 10 for the
Erfindung wesentlichen Elemente eines rohrförmigen Gehäuses 12 und darin angeordneten Trennwänden 14a-d veranschaulicht. Das Gehäuse 12 ist im Wesentlichen rohrförmig entlang einer Längsachse 16 gestaltet und weist an seiner Außenseite einen Dampfeinlass 18 in Gestalt eines Stutzens auf. An derInvention essential elements of a tubular housing 12 and arranged therein partitions 14a-d illustrated. The housing 12 is substantially tubular in shape along a longitudinal axis 16 and has on its outside a steam inlet 18 in the form of a nozzle. At the
Außenseite des Gehäuses 12 sind ferner Dampfauslässe 20 und 22 angeordnet, die als Anzapfungen zum Abzweigen von Vorwärmdampf dienen. Das Gehäuse 12 ist mit insgesamt vier Trennwänden 14a, 14b, 14c und 14d in fünf Dampfräume 24a bis 24e unterteilt, bei denen der Dampfeinlass 18 in denOutside of the housing 12, steam outlets 20 and 22 are further arranged, which serve as taps for branching preheat steam. The housing 12 is divided into a total of four partitions 14a, 14b, 14c and 14d in five steam rooms 24a to 24e, in which the steam inlet 18 in the
Dampfraum 24c mündet, aus den Dampfräumen 24b und 24d jeweils ein „kleiner" Dampfauslass 20 und aus den Dampfräumen 24a und 24e jeweils zwei „große" Dampfauslässe 22 herausführen.Steam chamber 24c opens from the steam rooms 24b and 24d each have a "small" steam outlet 20 and lead out of the steam chambers 24a and 24e each have two "large" steam outlets 22.
Im Betrieb der Dampfturbine 10 dreht sich in dem Gehäuse 12 ein in Richtung der Längsachse 16 ausgerichteter, nicht dargestellter Rotor. Dieser Rotor durchsetzt die Trennwände 14a bis 14d, wozu in diesen Trennwänden 14 jeweils eine zentrale Öffnung 26 ausgebildet ist. Der durch den Dampfeinlass 18 in den Dampfräum 24c eingeführte Dampf strömt dabei in axialer Richtung zu beiden Stirnseiten des rohrförmigen Gehäuses 12 und verlässt dort durch jeweils eine Öffnung 28 das Gehäuse 12. Die Strömung des Dampfes durch das Gehäuse 12 ist im Bereich der Dampfräume 24b und 24d durch jeweils einen Rohrabschnitt 30 geführt, mit dem die Trennwände 14a und 14b bzw. 14c und 14d im Bereich der zugehörigen Öffnungen 26 miteinander verbunden sind. Damit die Dampfturbine 10 in axialer Richtung besonders kompakt gestaltet und damit ein besonders kostengünstig zu realisierender, kurzer Abstand zwischen zugehörigen (nicht dargestellten) Lagern des Dampfturbinenrotors erzielt wird und ferner das Gehäuse 12 sowie die Trennwände 14 beiIn operation of the steam turbine 10 rotates in the housing 12 aligned in the direction of the longitudinal axis 16, not shown rotor. This rotor passes through the partitions 14a to 14d, for which purpose in each of these partitions 14, a central opening 26 is formed. The steam introduced into the steam space 24c through the steam inlet 18 flows in the axial direction to both end faces of the tubular housing 12 and leaves there through one The flow of steam through the housing 12 is guided in the region of the steam chambers 24b and 24d by a respective pipe section 30, with which the partitions 14a and 14b or 14c and 14d are connected to each other in the region of the associated openings 26 , Thus, the steam turbine 10 is designed to be particularly compact in the axial direction and thus a particularly cost-effective, short distance between associated (not shown) bearings of the steam turbine rotor is achieved and also the housing 12 and the partitions 14 at
Temperaturänderungen an der Dampfturbine 10 nicht übermäßig großen DehnungsSpannungen unterworfen werden, sind die Trennwände 14 jeweils aus einzelnen ebenen Teilflächen 32 gestaltet, die zur Längsachse 16 geneigt um jeweils eine zentrale Teilfläche 34 angeordnet sind. Die derart an der zentralen Teilfläche 34 radial außenliegenden Teilflächen 32 grenzen jeweils an geraden Faltkanten 36 an die zentrale Teilfläche 34.Temperature changes to the steam turbine 10 are not subjected to excessively large strain voltages, the partitions 14 are each formed of individual flat faces 32, which are arranged inclined to the longitudinal axis 16 by a respective central part surface 34. The thus on the central part surface 34 radially outer surface portions 32 each border at straight folding edges 36 to the central part surface 34th
Wie insbesondere in Fig. 1 gut zu erkennen ist, sind die äußeren Teilflächen 32 des Dampfraums 24c an der Seite des Dampfeinlasses 18 derart geneigt, dass der Dampfeinlass 18 in das Gehäuse 12 hinein sich verkleinernde Querschnittsbreiten bzw. -flächen aufweist. An der diametral gegenüberliegenden Seite des Gehäuses 12 sind die äußeren Teilflächen 32 derAs can be clearly seen in particular in FIG. 1, the outer partial surfaces 32 of the vapor space 24c are inclined on the side of the steam inlet 18 in such a way that the steam inlet 18 has cross-sectional widths or areas which decrease in the housing 12. At the diametrically opposite side of the housing 12, the outer surface portions 32 of
Trennwände 14b und 14c derart zueinander geneigt, dass sich die Querschnittsbreiten bzw. -flächen des Dampfraumes 24c mit zunehmendem Abstand vom Dampfeinlass 18 weiter verkleinern. Die zentralen Teilflächen 34 der Trennwände 14b und 14c sind hingegen senkrecht zur Längsachse 16 ausgerichtet.Partitions 14b and 14c inclined to each other such that the cross-sectional widths or areas of the vapor space 24c with increasing distance from the steam inlet 18 further decrease. The central partial surfaces 34 of the partition walls 14b and 14c, however, are aligned perpendicular to the longitudinal axis 16.
Insbesondere in Fig. 6 ist ferner zu erkennen, dass die zentralen Teilflächen 34 der Trennwände 14b und 14c seitlich vom Dampfeinlass 18 jeweils eben bis an das Gehäuse 12 fortgesetzt und dort keine Faltkanten vorgesehen sind.In particular, in FIG. 6 it can also be seen that the central partial surfaces 34 of the partition walls 14b and 14c are each continued laterally from the steam inlet 18 as far as the housing 12 and no folding edges are provided there.
Im Gegensatz zu den Trennwänden 14b und 14c sind die Trennwände 14a und 14d jeweils als „Schalen" gestaltet, an denen an einer zentralen Teilfläche 34 drei äußere geneigt angeordnete Teilflächen 32 ausgebildet sind. Die äußeren Teilflächen 32 der Trennwände 14a und 14d sind jeweils in axialer Richtung zu den stirnseitigen Öffnungen 28 der zugehörigen Dampfräume 24a und 24e geneigt. Dadurch verläuft die bezogen auf Fig. 6 obere äußere Teilfläche 32 der Trennwände 14a und 14d jeweils im Wesentlichen parallel zu den oberen äußeren Teilflächen 32 der Trennwände 14b bzw. 14c (siehe auch Fig. 1 obere Hälfte) . Im bezogen auf die Figuren unteren Bereich der Trennwände 14 wird durch die zueinander geneigten äußeren Teilflächen 32 der Trennwände 14b und 14c und die sich senkrecht zur Längsachse 16 bis unten erstreckenden zentralen Teilfläche 34 der Trennwände 14a und 14d eine Verbreiterung der Dampfräume 24b und 24d in Richtung auf die „kleinen" Dampfauslasse 20 erreicht. Somit ergibt sich von oben nach unten insgesamt eine Vergrößerung der Querschnittsflächen der zur Mitte hin durch den Rohrabschnitt 30 begrenzten, ringförmigen Dampfräume 24b und 24d in Richtung auf die Dampfauslässe 20.In contrast to the partitions 14b and 14c, the partitions 14a and 14d are each designed as "shells" which three outer inclined inclined surfaces 32 are formed on a central part surface 34. The outer partial surfaces 32 of the partition walls 14a and 14d are each inclined in the axial direction to the front side openings 28 of the associated steam chambers 24a and 24e. As a result, the upper outer partial surface 32 of the partition walls 14a and 14d extends in each case substantially parallel to the upper outer partial surfaces 32 of the partition walls 14b and 14c (see also FIG. 1, upper half). In relation to the figures lower portion of the partitions 14 is by the mutually inclined outer faces 32 of the partitions 14b and 14c and perpendicular to the longitudinal axis 16 to bottom extending central face 34 of the partitions 14a and 14d, a widening of the steam chambers 24b and 24d in the direction reached on the "small" steam outlet 20. Thus, from top to bottom results in an overall increase in the cross-sectional areas of the center through the pipe section 30 limited, annular steam chambers 24b and 24d in the direction of the steam outlets 20th
An den Dampfräumen 24a und 24e sind unten jeweils zwei Dampfauslasse 22 vorgesehen. Diese Dampfauslasse 22 liegen in einem Bereich der Dampfräume 24a bzw. 24e, an denen die Dampfräume 24a und 24e wegen der Gestalt der Trennwände 14a bzw. 14d in axialer Richtung besonders breit sind. In den oberen und seitlichen Bereichen sind die Dampfräume 24a und 24e hingegen wegen der an den Trennwänden 14a und 14d jeweils um die zentrale Teilfläche 34 gruppierten drei äußeren Teilflächen 32 vergleichsweise schmal.At the steam rooms 24a and 24e, two steam outlets 22 are provided at the bottom. These steam outlets 22 are located in a region of the steam chambers 24a and 24e, respectively, where the steam chambers 24a and 24e are particularly wide in the axial direction because of the shape of the partition walls 14a and 14d. In contrast, in the upper and lateral regions, the steam chambers 24a and 24e are comparatively narrow because of the three outer partial surfaces 32 grouped around the central partial surface 34 on the partition walls 14a and 14d.
Wie in Fig. 8 dargestellt ist, sind an dem Gehäuse 12 knapp oberhalb der Teilfuge des Unterteils Einstiegsöffnungen bzw. Mannlöcher 38 ausgebildet, die wegen der gewählten Gestalt der Trennwände 14 einen besonders leicht zugänglichen Einstieg und einen guten Zugang zu den zu bearbeitenden Bereichen im Inneren des Gehäuses 12 ermöglichen. As shown in FIG. 8, access openings or manholes 38 are formed on the housing 12 just above the parting line of the lower part, which because of the selected shape of the partitions 14 provides a particularly easy access and good access to the areas to be machined inside allow the housing 12.

Claims

Patentansprüche claims
1. Dampfturbine (10) mit mindestens zwei Dampfräumen (24a-e) , die von einem im Wesentlichen rohrförmigen Gehäuse (12) umgeben und durch mindestens eine in dem Gehäuse (12) angeordnete Trennwand (14a-d) voneinander getrennt sind, dadurch gekennzeichnet, dass die Trennwand (14a-d) aus mindestens zwei ebenen Teilflächen (32, 34) gestaltet ist, die relativ zueinander geneigt gestaltet sind.A steam turbine (10) having at least two steam chambers (24a-e) surrounded by a substantially tubular housing (12) and separated from one another by at least one partition (14a-d) disposed in the housing (12) in that the dividing wall (14a-d) is made up of at least two flat partial surfaces (32, 34) which are inclined relative to each other.
2. Dampfturbine nach Anspruch 1, dadurch gekennzeichnet, dass die Teilflächen (32, 34) an mindestens einer geraden Faltkante (36) aneinander anschließen.2. Steam turbine according to claim 1, characterized in that connect the partial surfaces (32, 34) on at least one straight fold edge (36) to each other.
3. Dampfturbine nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Teilflächen (32, 34) an Faltkanten (36) aneinander anschließen, die bezogen auf eine Längsachse (16) des rohrförmigen Gehäuses (12) unsymmetrisch angeordnet sind.3. Steam turbine according to claim 1 or 2, characterized in that the partial surfaces (32, 34) at folding edges (36) adjoin one another, which are arranged asymmetrically with respect to a longitudinal axis (16) of the tubular housing (12).
4. Dampfturbine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Teilflächen (32, 34) in ihrer Neigung bezogen auf eine4. Steam turbine according to one of the preceding claims, characterized in that the partial surfaces (32, 34) in terms of their inclination to a
Längsachse (16) des rohrförmigen Gehäuses (12) unsymmetrisch, insbesondere nicht rotationssymmetrisch angeordnet sind.Longitudinal axis (16) of the tubular housing (12) are arranged asymmetrically, in particular not rotationally symmetrical.
5. Dampfturbine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Trennwand (14a-d) mit einer zentralen Teilfläche (34) gestaltet ist, an der über den Umfang verteilt mehrere weitere Teilflächen (32) anschließen, die zur zentralen Teilfläche (34) geneigt sind. 5. Steam turbine according to one of the preceding claims, characterized in that the dividing wall (14a-d) is designed with a central partial surface (34), distributed over the circumference of a plurality of further partial surfaces (32) connect to the central partial surface (34 ) are inclined.
6. Dampfturbine nach Anspruch 5, dadurch gekennzeichnet, dass an der zentralen Teilfläche (34) über deren Umfang verteilt drei geneigte Teilflächen (32) anschließen, die insbesondere im Wesentlichen gleich groß sind.6. Steam turbine according to claim 5, characterized in that at the central partial surface (34) distributed over the circumference of three inclined partial surfaces (32) connect, which are in particular substantially the same size.
7. Dampfturbine nach Anspruch 5, dadurch gekennzeichnet, dass an der zentralen Teilfläche (34) zwei gegenüberliegende Teilflächen (32) anschließen, die insbesondere bezogen auf die zentrale Teilfläche (34) in entgegengesetzte Richtungen geneigt sind.7. Steam turbine according to claim 5, characterized in that connect to the central partial surface (34) has two opposite partial surfaces (32) which are inclined in particular in relation to the central partial surface (34) in opposite directions.
8. Dampfturbine nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, dass die zentrale Teilfläche (34) an mindestens einem Teilbereich ihres Umfangs bis an das Gehäuse (12) eben gestaltet ist.8. Steam turbine according to one of claims 5 to 7, characterized in that the central part surface (34) at least a portion of its circumference up to the housing (12) is flat.
9. Dampfturbine nach einem der Ansprüche 5 bis 8, dadurch gekennzeichnet, dass die zentrale Teilfläche (34) im Wesentlichen senkrecht zu einer Längsachse (16) des rohrförmigen Gehäuses (12) ausgerichtet ist.9. Steam turbine according to one of claims 5 to 8, characterized in that the central partial surface (34) is aligned substantially perpendicular to a longitudinal axis (16) of the tubular housing (12).
10. Dampfturbine nach einem der Ansprüche 5 bis 9, dadurch gekennzeichnet, dass mit einer der genannten Teilflächen (32) in dem Gehäuse ein zumindest einseitig trichterförmiger Einlass (18) oder Auslass (20, 22) gebildet ist.10. Steam turbine according to one of claims 5 to 9, characterized in that with one of said partial surfaces (32) in the housing an at least one funnel-shaped inlet (18) or outlet (20, 22) is formed.
11. Dampfturbine insbesondere nach einem der vorhergehenden Ansprüche, mit mindestens zwei Dampfräumen (24a-e) , die von einem im Wesentlichen rohrförmigen Gehäuse (12) umgeben und durch mindestens eine in dem Gehäuse (12) angeordnete Trennwand (14a-d) voneinander getrennt sind, dadurch gekennzeichnet, dass die Trennwand (14a-d) und mindestens zwei Anschlüsse (18, 20, 22) für Dampf am Gehäuse (12) derart gestaltet sind, dass einer der Dampfräume (24c) ausgehend von einem zugehörigen Anschluss (18) in das Gehäuse (12) hinein sich verkleinernde Querschnittsflächen aufweist, während der jenseits der Trennwand (14a-d) befindliche Dampfraum (24a, 24b, 24d, 24e) in Richtung auf einen zugehörigen Anschluss (20, 22) aus dem Gehäuse (12) heraus sich vergrößernde Querschnittsflächen aufweist. 11. steam turbine, in particular according to one of the preceding claims, with at least two steam chambers (24a-e), surrounded by a substantially tubular housing (12) and separated by at least one in the housing (12) arranged partition wall (14a-d) characterized in that the partition wall (14a-d) and at least two connections (18, 20, 22) are designed for steam on the housing (12) such that one of the steam chambers (24c) starting from an associated port (18) into the housing (12) has decreasing cross-sectional areas, while the beyond the partition wall (14a-d) Has located vapor space (24a, 24b, 24d, 24e) in the direction of an associated terminal (20, 22) from the housing (12) out magnifying cross-sectional areas.
EP05777733A 2004-08-23 2005-08-11 Steam turbine comprising two steam chambers Not-in-force EP1781901B1 (en)

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PL05777733T PL1781901T3 (en) 2004-08-23 2005-08-11 Steam turbine comprising two steam chambers
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EP04019959A EP1630359A1 (en) 2004-08-23 2004-08-23 Steam turbine with two steam chambers
PCT/EP2005/053954 WO2006021513A1 (en) 2004-08-23 2005-08-11 Steam turbine comprising two steam chambers
EP05777733A EP1781901B1 (en) 2004-08-23 2005-08-11 Steam turbine comprising two steam chambers

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CN102444426B (en) 2010-09-30 2015-05-27 阿尔斯通技术有限公司 Method of modifying a steam turbine
US20130078089A1 (en) * 2011-09-26 2013-03-28 General Electric Company Steam turbine single shell extraction lp casing

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US1273633A (en) * 1917-11-14 1918-07-23 Ljungstrom Angturbin Ab Reversible radial-flow turbine.
CH564680A5 (en) * 1973-10-16 1975-07-31 Bbc Brown Boveri & Cie
CH578680A5 (en) * 1974-11-18 1976-08-13 Bbc Brown Boveri & Cie
JPS581252B2 (en) * 1977-06-13 1983-01-10 株式会社日立製作所 Steam turbine low pressure casing
JPS5531413A (en) * 1978-08-25 1980-03-05 Toshiba Corp Moisture separator
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JP4146033B2 (en) * 1999-06-15 2008-09-03 三菱重工業株式会社 Steam inlet / outlet pressure loss reduction structure of steam turbine
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US20090116957A1 (en) 2009-05-07
EP1630359A1 (en) 2006-03-01
CN101057062A (en) 2007-10-17
CN101057062B (en) 2010-05-26
US8221063B2 (en) 2012-07-17
WO2006021513A1 (en) 2006-03-02
ATE519924T1 (en) 2011-08-15
PL1781901T3 (en) 2012-01-31

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