EP2230388B1 - Turbine with support structure - Google Patents

Turbine with support structure Download PDF

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Publication number
EP2230388B1
EP2230388B1 EP10155209A EP10155209A EP2230388B1 EP 2230388 B1 EP2230388 B1 EP 2230388B1 EP 10155209 A EP10155209 A EP 10155209A EP 10155209 A EP10155209 A EP 10155209A EP 2230388 B1 EP2230388 B1 EP 2230388B1
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EP
European Patent Office
Prior art keywords
flange
support
supports
horizontal
lower flange
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP10155209A
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German (de)
French (fr)
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EP2230388A1 (en
Inventor
Armin Busekros
Pascal Prehm
Miroslav Cindric
Dominic Bürgi
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General Electric Technology GmbH
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Alstom Technology AG
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Publication of EP2230388A1 publication Critical patent/EP2230388A1/en
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Publication of EP2230388B1 publication Critical patent/EP2230388B1/en
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    • 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
    • F01D25/28—Supporting or mounting arrangements, e.g. for turbine casing
    • 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
    • F01D25/243—Flange connections; Bolting arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
    • F01D25/26—Double casings; Measures against temperature strain in casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/30—Retaining components in desired mutual position
    • F05B2260/301—Retaining bolts or nuts

Definitions

  • the present invention relates to the field of turbomachinery. It relates to a turbine with support according to the preamble of claim 1.
  • FIG. 1 One possible configuration of such a supported turbomachine or turbine is in Fig. 1 played.
  • turbine 10 has an outer housing 18 that is divided along a going through the machine axis 17 horizontal parting plane into an upper part 11 and a lower part 12.
  • Upper part 11 and lower part 12 are sealingly connected or screwed together in the parting plane via a horizontal flange 13.
  • On the outer housing 18 along a plurality of vertical supports 14, 15 and 16 are arranged, which engage with the upper end of the outer housing 18 and are supported by the lower end of a (not shown) floor or foundation.
  • the supports 14, 15 and 16 can either completely or partially attack on a separate sprue on the outer housing 18, with the result that the forces acting on the housing and moments are amplified by the larger lever arm.
  • a separate sprue can possibly lead to undesirable larger transport dimensions.
  • the supports 14, 15, 16 can be used as close as possible to the neutral fiber of the housing, where the Flanschverschraubung is located.
  • FIGS. 2 and 3 Two variants of such prior art support are in the FIGS. 2 and 3 shown:
  • the variant according to Fig. 2 is provided with an external thread 23 upper end of a support 19 inserted through a through hole 24 in the lower flange 13b of the horizontal flange 13 and screwed to the lower flange 13b.
  • the upper mounting nut 20 can be screwed onto the support 19, a corresponding opening is provided in the upper flange 13a.
  • a Screwing the two flanges 13a and 13b is not possible at this point.
  • the support 19 is screwed with its external thread 23 into a corresponding threaded bore 25 in the lower flange 13b and countered with a lock nut 22.
  • the publication DE-U-74 15 587 describes a housing for a turbomachine, wherein the outer housing (1) consists essentially of a discharge hood (3, 3 '), outflow (6) and a closed support frame (2), in the region of the supports of the inner housing via inner housing support (8). is rigidly fixed to the machine foundation (7). On the (in several, not only horizontally extending sections divided) separating flange (16, 18, 21 and 26) attacking, separate and rod-shaped supports in the sense of the above-described problem are not provided.
  • the support frame (2) has only a grid of stiffening ribs (12). A possible impairment of the Flanschverschraubung by any supports is not recognizable.
  • GB-A-228 172 discloses the support of a turbine housing employing two pillars (14, 15) with a double T-shaped cross-section to support the housing in the region of the bearing. However, the support does not take place on the actual housing flange, but on a "forward extension 16 of the casing flange" (page 2, lines 18-28). This should also be avoided.
  • the object is solved by the entirety of the features of claim 1.
  • Essential for the solution according to the invention is that one or more of the supports engage with the upper end on the horizontal flange and are part of the Horizontalflanschverschraubung, wherein the horizontal flange comprises an upper flange and a lower flange which are screwed together, the supports used as part of the horizontal screw are each fixed with their upper end in the lower flange so that they are accessible from the top of the lower flange, and for screwing the flanges each have a flange through a through hole in the upper flange in the fixed in the lower flange support is screwed.
  • the support can be moved to a mechanically optimal position, without having to do without a sealing screwing at the local position.
  • the supports used as part of the horizontal screw can be screwed into the lower flange for fixing in the lower flange.
  • the supports are for fixing in the lower flange in such a way to a stop in the lower flange screwed that between the the upper end face of the support and the underside of the upper flange, a sufficient gap remains free.
  • FIG. 1 Another embodiment of the invention is characterized in that the supports used as part of the Horizontalverschraubung are formed as cylindrical rods and for receiving the flange screws at the upper end each have a introduced from the front side, concentric threaded hole.
  • FIG. 4 is in an enlarged section and in one too FIGS. 2 and 3 comparable representation of an embodiment of a support according to the invention with combined support and Flanschverschraubung reproduced.
  • the at the bottom or a foundation supporting support 31 is screwed with a threaded portion attached to the upper end 28 from below so far into the lower flange 13b that the end face of the support 31 with the top of the lower flange 13b approximately flush concludes.
  • a through hole 30 is provided in the lower flange 13b that has a corresponding internal thread in the upper half.
  • a through hole 27 is disposed in the upper flange 13a, through which a flange screw 26 can be inserted therethrough.
  • the length of the flange screw 26 is selected so that it protrudes downwardly from the upper flange 13a considerably, but ends within the lower flange 13b.
  • the flange screw 26 is supported with its screw head at the top of the upper flange 13 a and is screwed with the projecting from the upper flange 13 a downwardly projecting part in a designated (concentric) threaded hole in the support 31. Since the support 31 is in turn screwed into the lower flange 13b, by tightening the flange screw 26, the two flanges 13a and 13b can be pressed sealingly against each other directly in the region of the support 31.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Description

TECHNISCHES GEBIETTECHNICAL AREA

Die vorliegende Erfindung bezieht sich auf das Gebiet der Turbomaschinen. Sie betrifft eine Turbine mit Abstützung gemäss dem Oberbegriff des Anspruchs 1.The present invention relates to the field of turbomachinery. It relates to a turbine with support according to the preamble of claim 1.

STAND DER TECHNIKSTATE OF THE ART

Bei mit thermischen Prozessen arbeitenden Turbomaschinen, wie z.B. Gasturbinen, treten beim Hochfahren am Gehäuse thermische Dehnungen auf, die durch spezielle Abstützungen des Aussengehäuses abgefangen werden (siehe z.B. die DE-U1-78 14 269 oder die EP-A1-0 785 389 oder die US-A-5,542,642 ).In turbomachinery working with thermal processes, such as gas turbines, occur during startup on the housing thermal expansions, which are intercepted by special supports of the outer housing (see, eg, the DE-U1-78 14 269 or the EP-A1-0 785 389 or the US-A-5,542,642 ).

Eine mögliche Konfiguration einer derartig abgestützten Turbomaschine bzw. Turbine ist in Fig. 1 wiedergegeben. Die in Fig. 1 gezeigte Turbine 10 weist ein Aussengehäuse 18 auf, dass entlang einer durch die Maschinenachse 17 gehenden horizontalen Trennebene in ein Oberteil 11 und ein Unterteil 12 unterteilt ist. Oberteil 11 und Unterteil 12 sind in der Trennebene über einen Horizontalflansch 13 miteinander dichtend verbunden bzw. verschraubt. Am Aussengehäuse 18 entlang sind verteilt mehrere vertikale Stützen 14, 15 und 16 angeordnet, die mit dem oberen Ende am Aussengehäuse 18 angreifen und sich mit dem unteren Ende an einen (nicht dargestellten) Boden oder Fundament abstützen.One possible configuration of such a supported turbomachine or turbine is in Fig. 1 played. In the Fig. 1 shown turbine 10 has an outer housing 18 that is divided along a going through the machine axis 17 horizontal parting plane into an upper part 11 and a lower part 12. Upper part 11 and lower part 12 are sealingly connected or screwed together in the parting plane via a horizontal flange 13. On the outer housing 18 along a plurality of vertical supports 14, 15 and 16 are arranged, which engage with the upper end of the outer housing 18 and are supported by the lower end of a (not shown) floor or foundation.

Die Stützen 14, 15 und 16 können dabei entweder ganz oder teilweise an einem separaten Anguss am Aussengehäuse 18 angreifen, was zur Folge hat, dass die auf das Gehäuse einwirkenden Kräfte und Momente durch den grösseren Hebelarm verstärkt werden. Darüber hinaus kann ein separater Anguss unter Umständen zu unerwünschten grösseren Transportabmessungen führen.The supports 14, 15 and 16 can either completely or partially attack on a separate sprue on the outer housing 18, with the result that the forces acting on the housing and moments are amplified by the larger lever arm. In addition, a separate sprue can possibly lead to undesirable larger transport dimensions.

Um dies zu vermeiden, können die Stützen 14, 15, 16 möglichst nahe an die neutrale Faser des Gehäuses herangezogen werden, wo sich die Flanschverschraubung befindet. Dies führt jedoch dazu, dass aus Platzgründen an der Stelle, wo die jeweilige Stütze ansetzt, eine Schraube der Flanschverschraubung weggelassen werden muss. Dies kann zu Problemen bei der Dichtheit der Aussengehäuse führen.To avoid this, the supports 14, 15, 16 can be used as close as possible to the neutral fiber of the housing, where the Flanschverschraubung is located. However, this leads to the fact that for reasons of space at the point where the respective support attaches, a screw of Flanschverschraubung must be omitted. This can lead to problems with the tightness of the outer housing.

Zwei Varianten einer solchen vorbekannten Abstützung sind in den Fig. 2 und 3 dargestellt: Bei der Variante gemäss Fig. 2 ist das mit einem Aussengewinde 23 versehene obere Ende einer Stütze 19 durch ein Durchgangsloch 24 im unteren Flansch 13b des Horizontalflansches 13 hindurchgesteckt und mit dem Unteren Flansch 13b verschraubt. Dazu dienen eine auf die Stütze 19 aufgeschraubte untere Befestigungsmutter 21 und obere Befestigungsmutter 20. Damit die obere Befestigungsmutter 20 auf die Stütze 19 aufgeschraubt werden kann, ist im oberen Flansch 13a eine entsprechende Öffnung vorgesehen. Eine Verschraubung der beiden Flansche 13a und 13b ist an dieser Stelle nicht möglich. Dies gilt auch bei der Variante gemäss Fig. 3, bei welcher die Stütze 19 mit ihrem Aussengewinde 23 in eine entsprechende Gewindebohrung 25 im unteren Flansch 13b eingeschraubt und mit einer Kontermutter 22 gekontert ist.Two variants of such prior art support are in the FIGS. 2 and 3 shown: In the variant according to Fig. 2 is provided with an external thread 23 upper end of a support 19 inserted through a through hole 24 in the lower flange 13b of the horizontal flange 13 and screwed to the lower flange 13b. Serve with a screwed onto the support 19 lower mounting nut 21 and upper mounting nut 20. Thus, the upper mounting nut 20 can be screwed onto the support 19, a corresponding opening is provided in the upper flange 13a. A Screwing the two flanges 13a and 13b is not possible at this point. This also applies to the variant according to Fig. 3 in which the support 19 is screwed with its external thread 23 into a corresponding threaded bore 25 in the lower flange 13b and countered with a lock nut 22.

Die Druckschrift DE-U-74 15 587 beschreibt ein Gehäuse für eine Strömungsmaschine, wobei das Aussengehäuse (1) im wesentlichen aus einer Abströmhaube (3, 3'), Abströmstutzen (6) und einem geschlossenen Tragrahmen (2) besteht, der im Bereich der Auflager des Innengehäuses über Innengehäuseträger (8) am Maschinenfundament (7) starr befestigt ist. Am (in mehrere, nicht nur horizontal verlaufende Abschnitte unterteilten) Trennflansch (16, 18, 21 und 26) angreifende, separate und stabförmige Stützen im Sinne des oben beschriebenen Problems sind nicht vorgesehen. Der Tragrahmen (2) weist lediglich ein Gitter aus Versteifungsrippen (12) auf. Eine mögliche Beeinträchtigung der Flanschverschraubung durch irgendwelche Stützen ist nicht erkennbar.The publication DE-U-74 15 587 describes a housing for a turbomachine, wherein the outer housing (1) consists essentially of a discharge hood (3, 3 '), outflow (6) and a closed support frame (2), in the region of the supports of the inner housing via inner housing support (8). is rigidly fixed to the machine foundation (7). On the (in several, not only horizontally extending sections divided) separating flange (16, 18, 21 and 26) attacking, separate and rod-shaped supports in the sense of the above-described problem are not provided. The support frame (2) has only a grid of stiffening ribs (12). A possible impairment of the Flanschverschraubung by any supports is not recognizable.

Die bereits weiter oben genannte Druckschrift US-A-5,542,642 offenbart eine Stützstruktur für eine Turbine, bei der (siehe die dortige Fig. 1) zwar separate, stabförmige Stützen (32) vorgesehen sind. Wie aus der Figur klar erkennbar ist, greifen die Stützen (32) mit ihrem oberen Enden an Erweiterungen des Flansches (34) an, die nach aussen gezogen sind und damit ausserhalb der eigentlichen Flanschverschraubung (Bolzen 16) Kräfte einleiten. Genau dies soll jedoch vermieden werden.The already mentioned above document US-A-5,542,642 discloses a support structure for a turbine, in which (see the there Fig. 1 ), although separate, rod-shaped supports (32) are provided. As can be clearly seen from the figure, the supports (32) engage with their upper ends on extensions of the flange (34), which are pulled outwards and thus outside the actual Flanschverschraubung (bolt 16) initiate forces. But this is exactly what should be avoided.

Die weitere Druckschrift GB-A-228 172 offenbart die Abstützung eines Turbinengehäuses, die zwei Stützen (14, 15) mit einem doppel-T-förmigen Querschnitt einsetzt, um das Gehäuse im Bereich des Lagers abzustützen. Die Abstützung erfolgt jedoch nicht am eigentlichen Gehäuseflansch, sondern an einer "forward extension 16 of the casing flange" (Seite 2, Zeilen 18-28). Auch das soll gerade vermieden werden.The further publication GB-A-228 172 discloses the support of a turbine housing employing two pillars (14, 15) with a double T-shaped cross-section to support the housing in the region of the bearing. However, the support does not take place on the actual housing flange, but on a "forward extension 16 of the casing flange" (page 2, lines 18-28). This should also be avoided.

Dasselbe gilt auch für die Druckschrift US-A-1,522,190 , bei der am eigentlichen Gehäuse mit seinem Flansch dicke, in axialer Richtung ausladende Arme (21, 22 bzw. 26, 27) angeformt sind, durch die hindurch eine Verbolzung mit dem Sockel mittels Bolzen (24) stattfindet.The same applies to the publication US-A-1,522,190 , in which on the actual housing with its flange thick, axially extending arms (21, 22 and 26, 27) are integrally formed, through which a Verbolzung with the base by means of bolts (24) takes place.

DARSTELLUNG DER ERFINDUNGPRESENTATION OF THE INVENTION

Es ist eine Aufgabe der Erfindung, eine Abstützung für eine Turbine mit geteiltem Aussengehäuse anzugeben, welche die Nachteile der bisherigen Abstützungen vermeidet und sich insbesondere durch eine optimale Platzierung der Abstützung ohne Einbussen an der Dichtigkeit der Flanschverbindung auszeichnet.It is an object of the invention to provide a support for a turbine with split outer housing, which avoids the disadvantages of the previous supports and is characterized in particular by an optimal placement of the support without sacrificing the tightness of the flange connection.

Die Aufgabe wird durch die Gesamtheit der Merkmale des Anspruchs 1 gelöst. Wesentlich für die erfindungsgemässe Lösung ist, dass eine oder mehrere der Stützen mit dem oberen Ende am Horizontalflansch angreifen und Teil der Horizontalflanschverschraubung sind, wobei der Horizontalflansch einen oberen Flansch und einen unteren Flansch umfasst, die miteinander verschraubt sind, die als Teil der Horizontalverschraubung eingesetzten Stützen jeweils mit ihrem oberen Ende im unteren Flansch derart fixiert sind, dass sie von der Oberseite des unteren Flansches her zugänglich sind, und zur Verschraubung der Flansche jeweils eine Flanschschraube durch ein Durchgangsloch im oberen Flansch in die im unteren Flansch fixierte Stütze einschraubbar ist.The object is solved by the entirety of the features of claim 1. Essential for the solution according to the invention is that one or more of the supports engage with the upper end on the horizontal flange and are part of the Horizontalflanschverschraubung, wherein the horizontal flange comprises an upper flange and a lower flange which are screwed together, the supports used as part of the horizontal screw are each fixed with their upper end in the lower flange so that they are accessible from the top of the lower flange, and for screwing the flanges each have a flange through a through hole in the upper flange in the fixed in the lower flange support is screwed.

Hierdurch kann die Abstützung in eine mechanisch optimale Position verschoben werden, ohne dass an der dortigen Position auf eine dichtende Verschraubung verzichtet werden muss.In this way, the support can be moved to a mechanically optimal position, without having to do without a sealing screwing at the local position.

Insbesondere sind die als Teil der Horizontalverschraubung eingesetzten Stützen zur Fixierung im unteren Flansch jeweils in den unteren Flansch einschraubbar. Vorzugsweise sind die Stützen dabei zur Fixierung im unteren Flansch derart bis zu einem Anschlag in den unteren Flansch einschraubbar, dass zwischen der oberen Stirnfläche der Stütze und der Unterseite des oberen Flansches ein ausreichender Zwischenraum frei bleibt.In particular, the supports used as part of the horizontal screw can be screwed into the lower flange for fixing in the lower flange. Preferably, the supports are for fixing in the lower flange in such a way to a stop in the lower flange screwed that between the the upper end face of the support and the underside of the upper flange, a sufficient gap remains free.

Eine andere Ausgestaltung der Erfindung zeichnet sich dadurch aus, dass die als Teil der Horizontalverschraubung eingesetzten Stützen als zylindrische Stäbe ausgebildet sind und zur Aufnahme der Flanschschrauben am oberen Ende jeweils ein von der Stirnseite her eingebrachtes, konzentrisches Gewindeloch aufweisen.Another embodiment of the invention is characterized in that the supports used as part of the Horizontalverschraubung are formed as cylindrical rods and for receiving the flange screws at the upper end each have a introduced from the front side, concentric threaded hole.

Dabei ist es mechanisch von Vorteil, wenn die als Teil der Horizontalverschraubung eingesetzten Stützen mit ihren Stirnflächen im Wesentlichen bündig an die Oberseite des unteren Flansches anschliessen.It is mechanically advantageous if the supports used as part of the horizontal screw connect with their end faces substantially flush with the top of the lower flange.

KURZE ERLÄUTERUNG DER FIGURENBRIEF EXPLANATION OF THE FIGURES

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

Fig. 1
in der Seitenansicht eine beispielhafte Konfiguration einer am Aussengehäuse angreifenden Turbinen-Abstützung;
Fig. 2
im Ausschnitt eine erste Variante einer bisher eingesetzten Abstützung am Horizontalflansch, die eine Flanschverschraubung an diesem Ort ausschliesst;
Fig. 3
im Ausschnitt eine zweite Variante einer bisher eingesetzten Abstützung am Horizontalflansch, die eine Flanschverschraubung an diesem Ort ausschliesst; und
Fig. 4
ein Ausführungsbeispiel einer Abstützung gemäss der Erfindung mit kombinierter Abstützung und Flanschverschraubung.
The invention will be explained in more detail with reference to embodiments in conjunction with the drawings. Show it
Fig. 1
in the side view of an exemplary configuration of engaging the outer casing turbine support;
Fig. 2
in the neckline a first variant of a previously used support on the horizontal flange, which excludes a Flanschverschraubung at this location;
Fig. 3
in the neckline, a second variant of a previously used support on the horizontal flange, which excludes a Flanschverschraubung at this location; and
Fig. 4
an embodiment of a support according to the invention with combined support and Flanschverschraubung.

WEGE ZUR AUSFÜHRUNG DER ERFINDUNGWAYS FOR CARRYING OUT THE INVENTION

In Fig. 4 ist in einem vergrösserten Ausschnitt und in einer zu Fig. 2 und 3 vergleichbaren Darstellung ein Ausführungsbeispiel einer Abstützung gemäss der Erfindung mit kombinierter Abstützung und Flanschverschraubung wiedergegeben. Die sich am Boden bzw. einem Fundament abstützende Stütze 31 ist mit einem am oberen Ende angebrachten Gewindeabschnitt 28 von unten soweit in den unteren Flansch 13b eingeschraubt, dass die Stirnfläche der Stütze 31 mit der Oberseite des unteren Flansches 13b annähernd bündig abschliesst. Dazu ist im unteren Flansch 13b ein Durchgangsloch 30 vorgesehen, dass in der oberen Hälfte ein entsprechendes Innengewinde aufweist.In Fig. 4 is in an enlarged section and in one too FIGS. 2 and 3 comparable representation of an embodiment of a support according to the invention with combined support and Flanschverschraubung reproduced. The at the bottom or a foundation supporting support 31 is screwed with a threaded portion attached to the upper end 28 from below so far into the lower flange 13b that the end face of the support 31 with the top of the lower flange 13b approximately flush concludes. For this purpose, a through hole 30 is provided in the lower flange 13b that has a corresponding internal thread in the upper half.

Konzentrisch zu dem Durchgangsloch 30 im unteren Flansch 13b ist im oberen Flansch 13a ein Durchgangsloch 27 angeordnet, durch dass eine Flanschschraube 26 hindurchgesteckt werden kann. Die Länge der Flanschschraube 26 ist so gewählt, dass sie nach unten aus dem oberen Flansch 13a beträchtlich herausragt, jedoch innerhalb des unteren Flansches 13b endet. Die Flanschschraube 26 stützt sich mit ihrem Schraubenkopf an der Oberseite des oberen Flansches 13a ab und ist mit dem aus dem oberen Flansch 13a nach unten herausragenden Teil in ein dafür vorgesehenes (konzentrisches) Gewindeloch in der Stütze 31 eingeschraubt. Da die Stütze 31 ihrerseits in den unteren Flansch 13b eingeschraubt ist, können durch Anziehen der Flanschschraube 26 die beiden Flansche 13a und 13b unmittelbar im Bereich der Stütze 31 dichtend gegeneinander gedrückt werden.Concentric with the through hole 30 in the lower flange 13b, a through hole 27 is disposed in the upper flange 13a, through which a flange screw 26 can be inserted therethrough. The length of the flange screw 26 is selected so that it protrudes downwardly from the upper flange 13a considerably, but ends within the lower flange 13b. The flange screw 26 is supported with its screw head at the top of the upper flange 13 a and is screwed with the projecting from the upper flange 13 a downwardly projecting part in a designated (concentric) threaded hole in the support 31. Since the support 31 is in turn screwed into the lower flange 13b, by tightening the flange screw 26, the two flanges 13a and 13b can be pressed sealingly against each other directly in the region of the support 31.

Auf diese Weise lassen sich die Angriffspunkte der Stützen am Horizontalflansch 13 des Aussengehäuses optimal platzieren, ohne dass auf eine Flanschverschraubung an diesen Punkten verzichtet werden muss. Desgleichen werden keine zusätzlichen Angüsse benötigt.In this way, the points of application of the supports on the horizontal flange 13 of the outer housing can be optimally placed without having to dispense with a Flanschverschraubung at these points. Likewise, no additional sprues are needed.

Grundsätzlich ist es aber auch denkbar, den Gewindeabschnitt 28 an der Stütze 31 wegzulassen und stattdessen an der Stütze 31 und am Durchgangsloch 30 korrespondierende Abstufungen im Aussen- bzw. Innendurchmesser vorzusehen, so dass sich die in das Durchgangsloch 30 gesteckte Stütze 31 am unteren Flansch 13b abstützen kann.In principle, however, it is also conceivable to omit the threaded portion 28 on the support 31 and instead to provide corresponding gradations in the outer or inner diameter on the support 31 and the through-hole 30 so that the support 31 inserted into the through-hole 30 on the lower flange 13b can support.

Besonders günstig ist es, die Stütze 31 mit dem Gewindeabschnitt 28 derart bis zu einem Anschlag 32 in den unteren Flansch 13b einzuschrauben, dass zwischen der oberen Stirnfläche der Stütze 31 und der Unterseite des oberen Flansches 13a ein ausreichender Zwischenraum frei bleibt, so dass die Stütze 31 keine direkten Kräfte vom oberen Flansch 13a aufnehmen muss.It is particularly advantageous to screw the support 31 with the threaded portion 28 as far as a stop 32 in the lower flange 13b, that between the upper end face of the support 31 and the underside of the upper flange 13a a sufficient gap remains free, so that the support 31 does not have to absorb direct forces from the upper flange 13a.

BEZUGSZEICHENLISTELIST OF REFERENCE NUMBERS

1010
Turbineturbine
1111
Oberteil (Aussengehäuse)Upper part (outer casing)
1212
Unterteil (Aussengehäuse)Lower part (outer casing)
1313
Horizontalflanschhorizontal flange
13a13a
oberer Flanschupper flange
13b13b
unterer Flanschlower flange
14,15,1614,15,16
Stützesupport
1717
Maschinenachsemachine axis
1818
Aussengehäuseouter casing
1919
Stützesupport
20,2120.21
Befestigungsmutterfixing nut
2222
Kontermutterlocknut
2323
Aussengewindeexternal thread
24,27,3024,27,30
DurchgangslochThrough Hole
2525
Gewindebohrungthreaded hole
2626
FlanschschraubeFlange
2828
Gewindeabschnittthreaded portion
2929
Gewindelochthreaded hole
3131
Stützesupport
3232
Anschlagattack

Claims (5)

  1. Turbine (10) having a support, which turbine (10) has an outer casing (18) which is split into an upper section (11) and a lower section (12) in a horizontal parting plane, wherein upper section (11) and lower section (12) are screwed to each other on a horizontal flange (13; 13a, 13b) which lies in the parting plane, and wherein the support comprises a multiplicity of essentially vertical supports (14, 15, 16; 31) which by an upper end act on the outer casing (18) and by the lower end are supported on a foundation, characterized in that one or more of the supports (14, 15, 16; 31) by the upper end act on the horizontal flange (13; 13a, 13b) and are part of the horizontal threaded flange connection, in that the horizontal flange (13) comprises an upper flange (13a) and a lower flange (13b) which are screwed to each other, in that the supports (31) which are used as part of the horizontal threaded connection are fixed in each case by their upper end in the lower flange (13b) in such a way that they are accessible from the upper side of the lower flange (13a), and in that for threaded connecting of the flanges (13a, 13b) a flange screw (26) can be screwed in each case through a through-hole (27) in the upper flange (13a) into the support (31) which is fixed in the lower flange.
  2. Turbine according to Claim 1, characterized in that the supports (31) which are used as part of the horizontal threaded connection can be screwed in each case into the lower flange (13b) for fixing in the said lower flange (13b).
  3. Turbine according to Claim 1 or 2, characterized in that the supports (31) which are used as part of the horizontal threaded connection are formed as cylindrical rods and for accommodating the flange screws (26) at the upper end have in each case a concentric threaded hole (29) which is introduced from the end face.
  4. Turbine according to one of Claims 1 to 3, characterized in that the supports (31) which are used as part of the horizontal threaded connection adjoin the upper side of the lower flange (13b) by their end faces in an essentially flush manner.
  5. Turbine according to Claim 2, characterized in that for fixing in the lower flange (13b) the supports (31) can be screwed into the lower flange (13b) up to a stop (32) in such a way that a sufficient gap remains between the upper end face of the support (31) and the underside of the upper flange (13a).
EP10155209A 2009-03-17 2010-03-02 Turbine with support structure Not-in-force EP2230388B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH00397/09A CH700679A1 (en) 2009-03-17 2009-03-17 Support for a turbine.

Publications (2)

Publication Number Publication Date
EP2230388A1 EP2230388A1 (en) 2010-09-22
EP2230388B1 true EP2230388B1 (en) 2012-11-14

Family

ID=40897584

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10155209A Not-in-force EP2230388B1 (en) 2009-03-17 2010-03-02 Turbine with support structure

Country Status (3)

Country Link
US (1) US8292252B2 (en)
EP (1) EP2230388B1 (en)
CH (1) CH700679A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150314403A1 (en) * 2014-05-01 2015-11-05 Siemens Energy, Inc. Arrangement for laser processing of turbine component
CN108825315B (en) * 2018-09-21 2023-11-28 中国船舶重工集团公司第七0三研究所 Bearing box supporting structure of marine steam turbine

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Also Published As

Publication number Publication date
US8292252B2 (en) 2012-10-23
US20100237221A1 (en) 2010-09-23
EP2230388A1 (en) 2010-09-22
CH700679A1 (en) 2010-09-30

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