WO2015074787A1 - Bague d'étanchéité d'une turbine à vapeur ménagée entre deux moitiés de carter et positionnée dans des gorges annulaires - Google Patents

Bague d'étanchéité d'une turbine à vapeur ménagée entre deux moitiés de carter et positionnée dans des gorges annulaires Download PDF

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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
Authority
WO
WIPO (PCT)
Prior art keywords
turbine
housing
annular
insert elements
groove
Prior art date
Application number
PCT/EP2014/070465
Other languages
German (de)
English (en)
Inventor
Ralf Bell
Isabell Böer
Giuseppe Gaio
Raimund Heinze
Markus Legenbauer
Damian Razowski
Thomas Riedel
Stanislaw Ruda
Ralf Ziwes
Original Assignee
Siemens Aktiengesellschaft
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 Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2015074787A1 publication Critical patent/WO2015074787A1/fr

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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
    • 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.

Landscapes

  • 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

L'invention concerne une turbine (1) comportant un premier carter de turbine (10), un second carter de turbine (11) disposé à l'intérieur du premier carter de turbine (10), les carters de turbine (10, 11) définissant entre eux une fente annulaire (14) et étant chacun divisés en deux moitiés de carter (10a, b ; 11a, b) avec formation de parties de jonctions de carter (19), et une chambre de vapeur à haute pression (12) et une chambre de vapeur à basse pression (13) adjacente, qui sont séparées l'une de l'autre et rendues étanches l'une par rapport à l'autre par une bague d'étanchéité (15) segmentée qui est insérée dans la fente annulaire (14), la bague d'étanchéité (15) étant logée dans des gorges de réception (17) annulaires opposées qui sont ménagées dans les carters de turbine (10, 11), et les carters de turbine (10, 11) comportant au niveau des gorges de réception (17) annulaires des éléments d'insertion (20 ; 24) qui sont adjacents aux parties de jonction de boîtier (19) ou qui s'étendent au-delà des parties de jonction de boîtier (19) et qui sont fixés de façon amovibles aux carters de turbine (10, 11) et munis chacun d'une gorge (23), les gorges (23) formant chacune une partie d'une gorge de réception (17) annulaire.
PCT/EP2014/070465 2013-11-20 2014-09-25 Bague d'étanchéité d'une turbine à vapeur ménagée entre deux moitiés de carter et positionnée dans des gorges annulaires WO2015074787A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013223690.5 2013-11-20
DE102013223690.5A DE102013223690A1 (de) 2013-11-20 2013-11-20 Dichtungsanordnung einer Turbine

Publications (1)

Publication Number Publication Date
WO2015074787A1 true WO2015074787A1 (fr) 2015-05-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/070465 WO2015074787A1 (fr) 2013-11-20 2014-09-25 Bague d'étanchéité d'une turbine à vapeur ménagée entre deux moitiés de carter et positionnée dans des gorges annulaires

Country Status (2)

Country Link
DE (1) DE102013223690A1 (fr)
WO (1) WO2015074787A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
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

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1038162A (fr) * 1951-06-06 1953-09-25 Licentia Gmbh Turbine à vapeur ou à gaz à admission axiale comportant un support inséré pour les aubes directrices ou couvercle à tuyères
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1038162A (fr) * 1951-06-06 1953-09-25 Licentia Gmbh Turbine à vapeur ou à gaz à admission axiale comportant un support inséré pour les aubes directrices ou couvercle à tuyères
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 (3)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
DE102013223690A1 (de) 2015-05-21

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