WO2015074787A1 - A seal ring of a steam turbine, which seal ring is positioned between two housing halves in annular grooves - Google Patents
A seal ring of a steam turbine, which seal ring is positioned between two housing halves in annular grooves Download PDFInfo
- Publication number
- WO2015074787A1 WO2015074787A1 PCT/EP2014/070465 EP2014070465W WO2015074787A1 WO 2015074787 A1 WO2015074787 A1 WO 2015074787A1 EP 2014070465 W EP2014070465 W EP 2014070465W WO 2015074787 A1 WO2015074787 A1 WO 2015074787A1
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- WIPO (PCT)
- Prior art keywords
- turbine
- housing
- annular
- insert elements
- groove
- 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.)
- Ceased
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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
- 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
-
- 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
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/005—Sealing means between non relatively rotating elements
-
- 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
- F01D25/246—Fastening of diaphragms or stator-rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
- F01D25/26—Double casings; Measures against temperature strain in casings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/28—Arrangement of seals
Definitions
- the present invention relates to a turbine having a first turbine housing, ⁇ a housing disposed within the first turbines second turbine housing, wherein the door ⁇ binengephaseuse define an annular gap between itself and the formation of joint housing part in two
- Housing halves are divided, and a Hoch foundeddampf- space and an adjacent arranged Niederdruckdampf Hurm, which are separated by a segmented sealing ring inserted into the annular gap and sealed from each other, wherein the sealing ring is received in opposing annular grooves formed in the turbine housings.
- Housing joints are each divided into two housing halves.
- the sealing ring is also divided into two ring segments to form sealing ring part joints and normally has an I-shaped cross-section.
- determ ⁇ mung arranged according to the state of the opposed radial end portions of the seal ring in annular grooves which are formed opposite each other on the turbine housings or on their respective housing halves engage, wherein the seal rings are arranged such that the seal ring piece joints with the
- the sealing elements as well as the annularWeu ⁇ th are subject to wear during operation of the turbine by steam erosion and by mechanical loads, especially in the field of Dichtungsring- and
- Has life and / or repair can easily and conveniently set ⁇ .
- the present invention provides a turbine of the aforementioned type which are characterized characterized is that the turbine housing in the region of the ring ⁇ shaped receiving grooves have on the housing part joints adjacent or over the casing parting away extending insert elements releasably to the Turbine housings attached and are each provided with a groove, wherein the grooves each have a part of an annular receiving groove bil ⁇ the.
- the inventive insert elements are used in the region of the housing partitions most affected by wear, which, when worn out, can be easily and conveniently replaced by new insert elements. Accordingly, the inventive
- Housing part each provided an insert element which extends beyond the Geosseuseteilfuge away.
- the housing part in the area of the annular receiving groove is completely eliminated, whereby even better results can be achieved.
- the individual elements are releasably taken in recesses ⁇ , which are formed in the turbine housings. This results in a very simple structure.
- the insert elements made of sheet steel Herge ⁇ provides, which is associated with good wear resistance and low cost.
- the inserts can be made of other wear-resistant materials overall na ⁇ Moslich.
- the present invention relates to the use ei ⁇ nes or more provided with a groove insert elements as part of a segmented sealing ring having seal assembly for sealing an existing between a high-pressure steam space and an adjacent low pressure steam space of a turbine annular gap, wherein the annular gap between two in two housing halves divided turbine housings is defined, and wherein the groove of each insert element forms a part of an annular, the sealing ring receiving groove.
- the at least one insert element is, as previously out ⁇ out, preferably made of a steel sheet, although other wear-resistant materials Kings can be used ⁇ NEN.
- FIG. 1 is a longitudinal sectional view of a low-pressure steam turbine
- FIG. 2 shows an enlarged view of the detail marked with the reference symbol A in FIG. 1;
- FIG. 3 is a view showing the arrangement shown in Figure 2 in the region of the housing joints;
- FIG. 4 shows a sectional view along the line B-B in FIG. 3, which shows a first variant of insert elements according to the invention.
- FIG. 5 shows a sectional view along the line B-B in FIG. 3, which shows a second variant of insert elements according to the invention.
- the turbine 1 shows a turbine 1, wherein it is a low pressure steam turbine ⁇ .
- the turbine 1 comprises a rotor 3 provided with blades 2, which is mounted at its free ends by means of corresponding bearings 4 and 5. During operation of the turbine 1 steam flows in the direction of the
- the turbine 1 is surrounded by an outer housing 9. Within of the outer housing 9, an outer inner housing 10 and an inner inner housing 11 are provided, each in two
- Housing halves are divided, in this case in an upper housing half 10a, IIa and a lower housing half 10b, IIb.
- the inner housing 10 and 11 define between them a Hoch foundeddampfhoffm 12 and a Nieder foundeddampfhoffm 13 which are separated by an interior between the outer housing 10 and inner housing 11 remaining the inner annular gap 14 vonei ⁇ Nander.
- This annular gap 14 is sealed by a sealing ring 15.
- the sealing ring 15 is divided centrally into two ring segments 15 a, 15 b to form sealing ring part joints 16.
- the sealing ring 15 is received between the outer inner housing 10 and the inner inner housing 11 at its free ends in annular receiving grooves 17 and 18, which are formed opposite one another on the outer inner housing 10 on the one hand and on the inner inner housing 11 on the other hand, as shown in FIG is shown.
- annular receiving grooves 17 and 18 are formed opposite one another on the outer inner housing 10 on the one hand and on the inner inner housing 11 on the other hand, as shown in FIG is shown.
- Housing halves 10a and 10b of the outer inner housing 10 and the housing halves IIa and IIb of the inner inner housing 11 extend, as shown in Figures 3 and 4, are adjacent to the annular grooves 17 and 18 respectively opposite each other, in the region of
- Housing joints 19 abutting insert elements 20 are provided, which are releasably secured by means of screws 21 in recesses 22 which are formed on the outer inner housing 10 and on ⁇ inner inner housing 11.
- the insert elements 20 are provided with grooves 23 which in the region of
- Housing joints 19 define a part of the annular grooves 17 and 18.
- Figure 4 shows an example of two ⁇ A set of elements 20, 10a and the lower housing half 10b are arranged inside the outer casing 10 opposite to each other in the region of the housing parting 19 between the upper casing half. b
- Figure 5 shows an arrangement similar to Figure 4 with Anstel ⁇ le of the two insert elements 20, a single insert member 24 is fixed by means of screws 21 in the recesses 22, wherein the insert member 24 extends about the housing parting 18 across and covers.
- the insert elements 20 and 24 are preferably made of steel Herge ⁇ . Alternatively, however, other wear-resistant materials can be used.
- the sealing arrangement in the region of the housing part joints is subject to particularly high wear. Thanks to the use according to the invention of insert elements made of particularly wear-resistant material in the area of the housing part joints, this wear can be reduced on the one hand. On the other hand, the insert elements can be easily and inexpensively replaced by new insert elements thanks to their detachable arrangement on the turbine housings as part of a repair of the seal assembly, if they are worn, which is associated with a large cost savings.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
EIN DICHTUNGSRING EINER DAMPFTURBINEN WELCHE ZWISCHEN ZWEI GEHÄUSEHÄLFTEN IN RINGNUTEN POSITIONIERT IST A SEAL RING OF A STEAM TURBINE WHICH IS POSITIONED BETWEEN TWO HOUSING HOLDERS IN RINGNUT
Die vorliegende Erfindung betrifft eine Turbine mit einem ersten Turbinengehäuse, einem innerhalb des ersten Turbinen¬ gehäuses angeordneten zweiten Turbinengehäuse, wobei die Tur¬ binengehäuse zwischen sich einen Ringspalt definieren und unter Bildung von Gehäuseteilfugen jeweils in zwei The present invention relates to a turbine having a first turbine housing, ¬ a housing disposed within the first turbines second turbine housing, wherein the door ¬ binengehäuse define an annular gap between itself and the formation of joint housing part in two
Gehäusehälften unterteilt sind, sowie einem Hochdruckdampf- räum und einem benachbart angeordneten Niederdruckdampfräum, die durch einen in den Ringspalt eingesetzten segmentierten Dichtungsring voneinander getrennt und gegeneinander abgedichtet sind, wobei der Dichtungsring in einander gegenüberliegenden ringförmigen Aufnahmenuten aufgenommen ist, die in den Turbinengehäusen ausgebildet sind. Housing halves are divided, and a Hochdruckdampf- space and an adjacent arranged Niederdruckdampfräum, which are separated by a segmented sealing ring inserted into the annular gap and sealed from each other, wherein the sealing ring is received in opposing annular grooves formed in the turbine housings.
Im Stand der Technik ist es bekannt, zur Abdichtung eines zwischen einem Hochdruckdampfräum und einem benachbart angeordneten Niederdruckdampfräum vorhandenen Ringspaltes einen Dichtungsring zu verwenden. Der Ringspalt ist zwischen zwei Turbinengehäusen definiert, die unter Bildung von In the prior art, it is known to use a sealing ring for sealing an existing between a high-pressure steam space and an adjacent arranged Niederdruckdampfräum annular gap. The annular gap is defined between two turbine housings, which form to form
Gehäuseteilfugen jeweils in zwei Gehäusehälften unterteilt sind. Der Dichtungsring ist unter Bildung von Dichtungsringteilfugen ebenfalls in zwei Ringsegmente unterteilt und weist normalerweise einen I-förmigen Querschnitt auf. Im bestim¬ mungsgemäß angeordneten Zustand greifen die einander gegenüberliegenden radialen Endbereiche des Dichtungsringes in ringförmige Aufnahmenuten, die einander gegenüberliegend an den Turbinengehäusen bzw. an deren jeweiligen Gehäusehälften ausgebildet sind, wobei die Dichtungsringe derart angeordnet sind, dass die Dichtungsringteilfugen mit den Housing joints are each divided into two housing halves. The sealing ring is also divided into two ring segments to form sealing ring part joints and normally has an I-shaped cross-section. In determ ¬ mung arranged according to the state of the opposed radial end portions of the seal ring in annular grooves which are formed opposite each other on the turbine housings or on their respective housing halves engage, wherein the seal rings are arranged such that the seal ring piece joints with the
Gehäuseteilfugen fluchten. Housing joints are aligned.
Die Dichtungselemente ebenso wie die ringförmigen Aufnahmenu¬ ten unterliegen während des Turbinenbetriebs Verschleißerscheinungen durch Dampferosion und durch mechanische Belastungen, insbesondere im Bereich der Dichtungsring- und The sealing elements as well as the annular Aufnahmeu ¬ th are subject to wear during operation of the turbine by steam erosion and by mechanical loads, especially in the field of Dichtungsring- and
Gehäuseteilfugen. Die Reparatur der Dichtungsringe ist wirt- schaftlich nicht möglich, weshalb diese ausgetauscht werden müssen. Die Instandsetzung der ringförmigen Aufnahmenuten ist mit erheblichem Aufwand verbunden, womit hohe Kosten einhergehen. Vor diesem Hintergrund ist es wünschenswert, die Casing joints. The repair of the sealing rings is economical not possible, which is why they have to be replaced. The repair of the annular grooves is associated with considerable effort, which involves high costs. Against this background, it is desirable that
Standzeit der Dichtungsanordnung zu erhöhen und die Instandsetzung möglichst einfach und preiswert zu gestalten. Eine bekannte Möglichkeit, dem Verschleiß durch Erosion entgegen¬ zuwirken, besteht darin, eine entsprechende Materialauswahl zu treffen. Diese ist allerdings ebenfalls mit sehr hohen Kosten verbunden. To increase life of the seal assembly and make the repair as simple and inexpensive. One known way to wear by erosion contrary ¬ zuwirken, is to make an appropriate choice of materials. However, this is also associated with very high costs.
Ausgehend von diesem Stand der Technik ist es eine Aufgabe der vorliegenden Erfindung, eine Turbine der eingangs genannten Art zu schaffen, deren Dichtungsanordnung eine hohe Based on this prior art, it is an object of the present invention to provide a turbine of the type mentioned, the seal assembly has a high
Standzeit aufweist und/oder sich einfach und bequem instand¬ setzen lässt. Has life and / or repair can easily and conveniently set ¬.
Zur Lösung dieser Aufgabe schafft die vorliegende Erfindung eine Turbine der eingangs genannten Art, die dadurch gekenn- zeichnet ist, dass die Turbinengehäuse im Bereich der ring¬ förmigen Aufnahmenuten an die Gehäuseteilfugen angrenzende oder sich über die Gehäuseteilfugen hinweg erstreckende Einsatzelemente aufweisen, die lösbar an den Turbinengehäusen befestigt und jeweils mit einer Nut versehen sind, wobei die Nuten jeweils einen Teil einer ringförmigen Aufnahmenut bil¬ den. Erfindungsgemäß werden also in dem vom Verschleiß am stärksten betroffenen Bereich der Gehäuseteilfugen separate Einsatzelemente eingesetzt, die, wenn sie verschlissen sind, einfach und bequem durch neue Einsatzelemente ausgetauscht werden können. Entsprechend lässt sich die erfindungsgemäßeTo solve this object the present invention provides a turbine of the aforementioned type which are characterized characterized is that the turbine housing in the region of the ring ¬ shaped receiving grooves have on the housing part joints adjacent or over the casing parting away extending insert elements releasably to the Turbine housings attached and are each provided with a groove, wherein the grooves each have a part of an annular receiving groove bil ¬ the. According to the invention, therefore, separate insert elements are used in the region of the housing partitions most affected by wear, which, when worn out, can be easily and conveniently replaced by new insert elements. Accordingly, the inventive
Dichtungsanordnung einfach instand setzen, indem die Einsatzelemente und der Dichtungsring ausgetauscht werden. Eine In¬ standsetzung der an den Turbinengehäusen ausgebildeten Aufnahmenuten kann zeitlich hinausgezögert werden, da diese in Bereichen entfernt von den Gehäuseteilfugen während des Betriebs weniger beansprucht werden. Insgesamt lassen sich auf diese Weise erhebliche Kosteneinsparungen erzielen. Gemäß einer ersten erfindungsgemäßen Variante sind im Bereich jeder Gehäuseteilfuge zwei Einsatzelemente vorgesehen, die im Bereich der Gehäuseteilfuge aneinanderstoßen, wobei ein Einsatzelement an der einen Gehäusehälfte und das andere Ein- satzelement gegenüberliegend an der anderen Gehäusehälfte lösbar befestigt ist. Bei dieser Variante können trotz wei¬ terhin bestehender Gehäuseteilfuge im Bereich der ringförmigen Aufnahmenut sehr gute Ergebnisse erzielt werden. Gemäß einer zweiten erfindungsgemäßen Variante ist pro Simply repair the seal assembly by replacing the insert elements and the seal ring. An in ¬ stellung of the formed on the turbine housings receiving grooves can be delayed in time, as they are less stressed in areas away from the housing joints during operation. Overall, significant cost savings can be achieved in this way. According to a first variant of the invention, two insert elements are provided in the region of each housing part, which abut one another in the region of the housing part, wherein an insert element is detachably fastened on one housing half and the other insert element on the other half of the housing. In this variant, very good results can be achieved despite wei ¬ terhin existing housing parting in the annular groove. According to a second variant of the invention is per
Gehäuseteilfuge jeweils ein Einsatzelement vorgesehen, das sich über die Gehäuseteilfuge hinweg erstreckt. Bei dieser zweiten Variante wird die Gehäuseteilfuge im Bereich der ringförmigen Aufnahmenut vollständig eliminiert, wodurch noch bessere Ergebnisse erzielt werden können. Housing part each provided an insert element which extends beyond the Gehäuseteilfuge away. In this second variant, the housing part in the area of the annular receiving groove is completely eliminated, whereby even better results can be achieved.
Bevorzugt sind die Einzelelemente lösbar in Aussparungen auf¬ genommen, die in den Turbinengehäusen ausgebildet sind. Auf diese Weise ergibt sich ein sehr einfacher Aufbau. Preferably, the individual elements are releasably taken in recesses ¬ , which are formed in the turbine housings. This results in a very simple structure.
Vorteilhaft sind die Einsatzelemente aus Stahlblech herge¬ stellt, was mit einer guten Verschleißfestigkeit und geringen Kosten einhergeht. Alternativ können die Einsatzelemente na¬ türlich auch aus anderen verschleißfesteren Materialien ge- fertigt sein. Advantageously, the insert elements made of sheet steel Herge ¬ provides, which is associated with good wear resistance and low cost. Alternatively, the inserts can be made of other wear-resistant materials overall na ¬ Türlich.
Ferner betrifft die vorliegende Erfindung die Verwendung ei¬ nes oder mehrerer mit einer Nut versehenen Einsatzelemente als Teil einer einen segmentierten Dichtungsring aufweisenden Dichtungsanordnung zur Abdichtung eines zwischen einem Hochdruckdampfraum und einem benachbart angeordneten Niederdruckdampfraum einer Turbine vorhandenen Ringspaltes, wobei der Ringspalt zwischen zwei jeweils in zwei Gehäusehälften unterteilten Turbinengehäusen definiert ist, und wobei die Nut je- des Einsatzelementes einen Teil einer ringförmigen, den Dichtungsring aufnehmenden Aufnahmenut bildet. Das zumindest eine Einsatzelement ist, wie zuvor bereits aus¬ geführt, bevorzugt aus einem Stahlblech hergestellt, wobei auch andere verschleißfeste Materialien verwendet werden kön¬ nen . Furthermore, the present invention relates to the use ei ¬ nes or more provided with a groove insert elements as part of a segmented sealing ring having seal assembly for sealing an existing between a high-pressure steam space and an adjacent low pressure steam space of a turbine annular gap, wherein the annular gap between two in two housing halves divided turbine housings is defined, and wherein the groove of each insert element forms a part of an annular, the sealing ring receiving groove. The at least one insert element is, as previously out ¬ out, preferably made of a steel sheet, although other wear-resistant materials Kings can be used ¬ NEN.
Weitere Merkmale und Vorteile der vorliegenden Erfindung werden anhand der nachfolgenden Beschreibung von erfindungsgemäßen Ausführungsformen unter Bezugnahme auf die beiliegende Zeichnung deutlich. Darin ist Further features and advantages of the present invention will become apparent from the following description of embodiments of the invention with reference to the accompanying drawings. That's it
Figur 1 eine Längsschnittansicht einer Niederdruckdampftur- bine ; FIG. 1 is a longitudinal sectional view of a low-pressure steam turbine;
Figur 2 eine vergrößerte Ansicht des in Figur 1 mit dem Be- zugszeichen A gekennzeichneten Ausschnitts; FIG. 2 shows an enlarged view of the detail marked with the reference symbol A in FIG. 1;
Figur 3 eine Ansicht, welche die in Figur 2 dargestellte Anordnung im Bereich der Gehäuseteilfugen zeigt; Figur 4 eine Schnittansicht entlang der Linie B-B in Figur 3, die eine erste Variante erfindungsgemäßer Einsatzelemente zeigt; und Figure 3 is a view showing the arrangement shown in Figure 2 in the region of the housing joints; FIG. 4 shows a sectional view along the line B-B in FIG. 3, which shows a first variant of insert elements according to the invention; and
Figur 5 eine Schnittansicht entlang der Linie B-B in Figur 3, die eine zweite Variante erfindungsgemäßer Einsatzelemente zeigt . FIG. 5 shows a sectional view along the line B-B in FIG. 3, which shows a second variant of insert elements according to the invention.
Gleiche Bezugsziffern beziehen sich nachfolgend auf gleiche oder gleichartig ausgebildete Bauteile. The same reference numbers refer to the same or similar components below.
Figur 1 zeigt eine Turbine 1, bei der es sich um eine Nieder¬ druckdampfturbine handelt. Die Turbine 1 umfasst einen mit Schaufeln 2 versehenen Läufer 3, der an seinen freien Enden mit Hilfe entsprechender Lager 4 und 5 gelagert ist. Während des Betriebs der Turbine 1 strömt Dampf in Richtung des 1 shows a turbine 1, wherein it is a low pressure steam turbine ¬. The turbine 1 comprises a rotor 3 provided with blades 2, which is mounted at its free ends by means of corresponding bearings 4 and 5. During operation of the turbine 1 steam flows in the direction of the
Pfeils 6 in einen Einlass 7 in die Beschaufelung des Läufers 3 ein und tritt durch einen Auslass 8 wieder aus dieser aus. Die Turbine 1 ist von einem Außengehäuse 9 umgeben. Innerhalb des Außengehäuses 9 sind ein äußeres Innengehäuse 10 und ein inneres Innengehäuse 11 vorgesehen, die jeweils in zwei Arrow 6 in an inlet 7 in the blading of the rotor 3 and exits through an outlet 8 again from this. The turbine 1 is surrounded by an outer housing 9. Within of the outer housing 9, an outer inner housing 10 and an inner inner housing 11 are provided, each in two
Gehäusehälften unterteilt sind, vorliegend jeweils in eine obere Gehäusehälfte 10a, IIa und eine untere Gehäusehälfte 10b, IIb. Die Innengehäuse 10 und 11 definieren zwischen sich einen Hochdruckdampfräum 12 und einen Niederdruckdampfräum 13, die durch einen zwischen dem äußeren Innengehäuse 10 und dem inneren Innengehäuse 11 verbleibenden Ringspalt 14 vonei¬ nander getrennt sind. Dieser Ringspalt 14 ist durch einen Dichtungsring 15 abgedichtet. Housing halves are divided, in this case in an upper housing half 10a, IIa and a lower housing half 10b, IIb. Define the inner housing 10 and 11 define between them a Hochdruckdampfräum 12 and a Niederdruckdampfräum 13 which are separated by an interior between the outer housing 10 and inner housing 11 remaining the inner annular gap 14 vonei ¬ Nander. This annular gap 14 is sealed by a sealing ring 15.
Der Dichtungsring 15 ist mittig in zwei Ringsegmente 15a, 15b unter Bildung von Dichtungsringteilfugen 16 unterteilt. Der Dichtungsring 15 ist zwischen dem äußeren Innengehäuse 10 und dem inneren Innengehäuse 11 jeweils an seinen freien Enden in ringförmigen Aufnahmenuten 17 und 18 aufgenommen, die einander gegenüber liegend am äußeren Innengehäuse 10 einerseits und am inneren Innengehäuse 11 andererseits ausgebildet sind, wie es in Figur 2 gezeigt ist. Im Bereich der The sealing ring 15 is divided centrally into two ring segments 15 a, 15 b to form sealing ring part joints 16. The sealing ring 15 is received between the outer inner housing 10 and the inner inner housing 11 at its free ends in annular receiving grooves 17 and 18, which are formed opposite one another on the outer inner housing 10 on the one hand and on the inner inner housing 11 on the other hand, as shown in FIG is shown. Around
Gehäuseteilfugen 19, die sich jeweils zwischen den Housing joints 19, each between the
Gehäusehälften 10a und 10b des äußeren Innengehäuses 10 und den Gehäusehälften IIa und IIb des inneren Innengehäuses 11 erstrecken, wie es in den Figuren 3 und 4 dargestellt ist, sind angrenzend an die ringförmigen Aufnahmenuten 17 und 18 jeweils einander gegenüber liegende, im Bereich der Housing halves 10a and 10b of the outer inner housing 10 and the housing halves IIa and IIb of the inner inner housing 11 extend, as shown in Figures 3 and 4, are adjacent to the annular grooves 17 and 18 respectively opposite each other, in the region of
Gehäuseteilfugen 19 aneinander stoßende Einsatzelemente 20 vorgesehen, die lösbar mittels Schrauben 21 in Aussparungen 22 befestigt sind, die am äußeren Innengehäuse 10 und am in¬ neren Innengehäuse 11 ausgebildet sind. Die Einsatzelemente 20 sind mit Nuten 23 versehen, welche im Bereich der Housing joints 19 abutting insert elements 20 are provided, which are releasably secured by means of screws 21 in recesses 22 which are formed on the outer inner housing 10 and on ¬ inner inner housing 11. The insert elements 20 are provided with grooves 23 which in the region of
Gehäuseteilfugen 19 einen Teil der ringförmigen Aufnahmenuten 17 und 18 definieren. Figur 4 zeigt beispielhaft zwei Ein¬ satzelemente 20, die einander gegenüber liegend im Bereich der Gehäuseteilfuge 19 zwischen der oberen Gehäusehälfte 10a und der unteren Gehäusehälfte 10b des äußeren Innengehäuses 10 angeordnet sind. b Housing joints 19 define a part of the annular grooves 17 and 18. Figure 4 shows an example of two ¬ A set of elements 20, 10a and the lower housing half 10b are arranged inside the outer casing 10 opposite to each other in the region of the housing parting 19 between the upper casing half. b
Figur 5 zeigt eine Anordnung analog zu Figur 4, wobei anstel¬ le der beiden Einsatzelemente 20 ein einzelnes Einsatzelement 24 mittels Schrauben 21 in den Aussparungen 22 befestigt ist, wobei sich das Einsatzelement 24 über die Gehäuseteilfuge 18 hinweg erstreckt und diese abdeckt. Figure 5 shows an arrangement similar to Figure 4 with Anstel ¬ le of the two insert elements 20, a single insert member 24 is fixed by means of screws 21 in the recesses 22, wherein the insert member 24 extends about the housing parting 18 across and covers.
Die Einsatzelemente 20 und 24 sind bevorzugt aus Stahl herge¬ stellt. Alternativ können aber auch andere verschleißfeste Materialien verwendet werden. The insert elements 20 and 24 are preferably made of steel Herge ¬ . Alternatively, however, other wear-resistant materials can be used.
Wie es eingangs bereits beschrieben wurde, unterliegt die Dichtungsanordnung im Bereich der Gehäuseteilfugen einem besonders hohen Verschleiß. Dank der erfindungsgemäßen Verwendung von aus besonders verschleißfestem Material hergestell- ten Einsatzelementen im Bereich der Gehäuseteilfugen kann dieser Verschleiß zum einen verringert werden. Zum anderen lassen sich die Einsatzelemente Dank ihrer lösbaren Anordnung an den Turbinengehäusen im Rahmen einer Instandsetzung der Dichtungsanordnung problemlos und kostengünstig durch neue Einsatzelemente austauschen, wenn diese verschlissen sind, was mit einer großen Kostenersparnis einhergeht. As has already been described, the sealing arrangement in the region of the housing part joints is subject to particularly high wear. Thanks to the use according to the invention of insert elements made of particularly wear-resistant material in the area of the housing part joints, this wear can be reduced on the one hand. On the other hand, the insert elements can be easily and inexpensively replaced by new insert elements thanks to their detachable arrangement on the turbine housings as part of a repair of the seal assembly, if they are worn, which is associated with a large cost savings.
Obwohl die Erfindung im Detail durch das bevorzugte Ausführungsbeispiel näher illustriert und beschrieben wurde, so ist die Erfindung nicht durch die offenbarten Beispiele einge¬ schränkt und andere Variationen können vom Fachmann hieraus abgeleitet werden, ohne den Schutzumfang der Erfindung zu verlassen . Although the invention in detail by the preferred embodiment has been illustrated and described in detail, the invention is not limited ¬ by the disclosed examples and other variations can be derived therefrom by the skilled artisan without departing from the scope of the invention.
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013223690.5A DE102013223690A1 (en) | 2013-11-20 | 2013-11-20 | Sealing arrangement of a turbine |
| DE102013223690.5 | 2013-11-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015074787A1 true WO2015074787A1 (en) | 2015-05-28 |
Family
ID=51662068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2014/070465 Ceased WO2015074787A1 (en) | 2013-11-20 | 2014-09-25 | A seal ring of a steam turbine, which seal ring is positioned between two housing halves in annular grooves |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE102013223690A1 (en) |
| WO (1) | WO2015074787A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2542486A (en) * | 2015-08-10 | 2017-03-22 | Rolls Royce Plc | A sealing attachment for a gas turbine engine |
| CN110761904A (en) * | 2019-11-27 | 2020-02-07 | 上海电气燃气轮机有限公司 | Cooling system, cold air chamber sealing structure and sealing partition plate of gas turbine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT202300018456A1 (en) * | 2023-09-08 | 2025-03-08 | Nuovo Pignone Tecnologie Srl | A TURBOMACHINE COMPRISING A SEAL BETWEEN AN OUTER CASE COMPONENT AND AN INNER CASE COMPONENT, AND METHOD |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1038162A (en) * | 1951-06-06 | 1953-09-25 | Licentia Gmbh | Axially inlet steam or gas turbine with an inserted support for guide vanes or nozzle cover |
| US5104286A (en) * | 1991-02-08 | 1992-04-14 | Westinghouse Electric Corp. | Recirculation seal for a gas turbine exhaust diffuser |
| GB2396193A (en) * | 2002-12-10 | 2004-06-16 | Alstom Technology Ltd | A seal arrangement for sealing the junction between two parts f the housing of a gas turbine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4477086A (en) * | 1982-11-01 | 1984-10-16 | United Technologies Corporation | Seal ring with slidable inner element bridging circumferential gap |
| US9017015B2 (en) * | 2011-10-27 | 2015-04-28 | General Electric Company | Turbomachine including an inner-to-outer turbine casing seal assembly and method |
-
2013
- 2013-11-20 DE DE102013223690.5A patent/DE102013223690A1/en not_active Withdrawn
-
2014
- 2014-09-25 WO PCT/EP2014/070465 patent/WO2015074787A1/en not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1038162A (en) * | 1951-06-06 | 1953-09-25 | Licentia Gmbh | Axially inlet steam or gas turbine with an inserted support for guide vanes or nozzle cover |
| US5104286A (en) * | 1991-02-08 | 1992-04-14 | Westinghouse Electric Corp. | Recirculation seal for a gas turbine exhaust diffuser |
| GB2396193A (en) * | 2002-12-10 | 2004-06-16 | Alstom Technology Ltd | A seal arrangement for sealing the junction between two parts f the housing of a gas turbine |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2542486A (en) * | 2015-08-10 | 2017-03-22 | Rolls Royce Plc | A sealing attachment for a gas turbine engine |
| GB2542486B (en) * | 2015-08-10 | 2019-03-27 | Rolls Royce Plc | A sealing attachment for a gas turbine engine |
| US10428671B2 (en) | 2015-08-10 | 2019-10-01 | Rolls-Royce Plc | Sealing attachment for a gas turbine engine |
| CN110761904A (en) * | 2019-11-27 | 2020-02-07 | 上海电气燃气轮机有限公司 | Cooling system, cold air chamber sealing structure and sealing partition plate of gas turbine |
| CN110761904B (en) * | 2019-11-27 | 2024-12-03 | 上海电气燃气轮机有限公司 | Cooling system, cold air chamber sealing structure and sealing partition of gas turbine |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102013223690A1 (en) | 2015-05-21 |
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