WO2012025342A1 - Carter pour une turbomachine et procédé pour sa fabrication - Google Patents

Carter pour une turbomachine et procédé pour sa fabrication Download PDF

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Publication number
WO2012025342A1
WO2012025342A1 PCT/EP2011/063269 EP2011063269W WO2012025342A1 WO 2012025342 A1 WO2012025342 A1 WO 2012025342A1 EP 2011063269 W EP2011063269 W EP 2011063269W WO 2012025342 A1 WO2012025342 A1 WO 2012025342A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
housing part
projection
parts
chromium steel
Prior art date
Application number
PCT/EP2011/063269
Other languages
German (de)
English (en)
Inventor
Christoph Kästner
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
Priority to EP11740913.6A priority Critical patent/EP2609298A1/fr
Priority to CN201180041122.XA priority patent/CN103080482B/zh
Publication of WO2012025342A1 publication Critical patent/WO2012025342A1/fr

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
    • 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
    • F01D25/265—Vertically split casings; Clamping arrangements therefor
    • 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
    • F05D2230/00—Manufacture
    • F05D2230/40—Heat treatment
    • 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
    • F05D2260/00—Function
    • F05D2260/30—Retaining components in desired mutual position
    • F05D2260/37—Retaining components in desired mutual position by a press fit connection
    • 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
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/10—Metals, alloys or intermetallic compounds
    • F05D2300/13—Refractory metals, i.e. Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, W
    • F05D2300/132—Chromium

Definitions

  • the invention relates to a housing for a
  • Steam turbines generally include a rotatably mounted within an inner housing rotor, wherein an outer housing is disposed around the inner housing.
  • an outer housing is designed as a pot housing with a lid.
  • the outer housing consists of an upper and a lower part and is non-positively connected by screws.
  • the inner housing is also made of an upper and a lower part.
  • the inner housing comprises so-called vanes, which deflect an incoming steam.
  • the deflected vapor flows between blades disposed on the rotor.
  • the result is that the rotor is set in rotation.
  • Steam turbines have temperature values of, for example, over 600 ° C at a pressure of more than 350bar. This means that the inner housing and the rotor are thermally stressed. In addition, the rotor is operated at a speed of 3000min -1 or 3600min -1 . In addition to the thermal loads, this leads to an increased mechanical load on the rotor as well as the rotor blades arranged on the rotor.
  • the flow channel formed between the rotor and the inner housing by means of the guide vanes and rotor blades usually comprises a plurality of blade stages, ie, the stator blades and rotor blades are arranged alternately in a flow direction one after the other. The temperatures in the
  • the material GX12CrMoWVNbNl 0-1-1 is a substance that can withstand the high steam temperatures. However, the temperature in the rear of the steam turbine drops to values well below 565 ° C. This means that lower in the rear of the steam turbine
  • the object of the invention is to provide a housing for a
  • Specify turbomachine which comprises two housing parts and is suitable for high inlet temperatures.
  • the housing at least two Has housing parts, wherein the two housing parts for arrangement along an axial axis one behind the other
  • Shrinking is understood to mean a process in which a housing part in a radial direction through
  • Heating is stretched and is arranged in a second method step on the first housing part and shrinks by a cooling process on the second housing part.
  • a second method step on the first housing part and shrinks by a cooling process on the second housing part.
  • the two housing parts are formed substantially as half-shells.
  • the inner casing of a steam turbine is usually made, for example, of an upper and a lower part.
  • the upper and lower part is here as a half shell
  • the first housing part has a formed in a circumferential direction
  • Housing part can protrude.
  • the recess has an axial length in which the projection of the second housing part is fitted.
  • the second housing part in the radial direction behind the first
  • the housing comprises three housing parts, namely a first housing part made of a 10% chromium steel, a second housing part of a l% chromium steel and a third housing part of a l% chromium steel, wherein the first housing part in a
  • Inflow area is used for a steam turbine.
  • the first housing part is about the inventive
  • the first and third housing part is also about the inventive
  • the housing is designed as an inner housing for a steam turbine.
  • FIG. 2 shows a partial view of FIG. 1
  • FIG. 1 shows a steam turbine 1, comprising a
  • Inner housing 3 is a rotor 4, which has not shown blades, rotatably mounted about a rotation axis 5.
  • the rotor 4 facing side of the inner housing 3 comprises in an axial direction 6 in a row
  • a double-flow steam turbine 1 in which a steam flowing into an inflow region 8 flows both into a left-hand flow 9 and into a right-hand flow 10 arranged opposite to the left-hand flow 9.
  • Both the inner housing 3 and the outer housing 2 are formed substantially rotationally symmetrical about the axis of rotation 5.
  • the inner housing 3 is made of a first housing part 3a, a second second housing part 3b arranged in the right-hand flood 10 and a housing part 3c arranged in the left-hand flood 9.
  • the embodiment of the steam turbine 1 shown in FIG. 1 is suitable for high steam parameters. For example, the inlet temperature of the over the inflow 8
  • the second housing part 3b and the third housing part 3c arranged in the right-hand flood 10 and in the left-hand flood 9 could be made of a less expensive one
  • Material are formed, such. B. from a l%
  • the first housing part 3a, the second housing part 3b and the third housing part 3c, as shown in FIG 1 is not shown in detail, manufactured as half shells. This means that in a cross-sectional view, i. H. in a view, for example, from the right in the direction of the axial direction 6, the first housing part 3a, the second housing part 3b and the third housing part 3c are semicircular.
  • the entire inner housing 3 is created by a
  • Comparatively symmetrical trained shell-shaped inner housing 3 to an entire inner housing. 3 is joined together. This joining takes place by means of screws on a joint.
  • the first housing part 3a is connected along the right tide 10 in the axial direction 6 via a shrinkage with the second housing part 3b. Likewise, in the left trough 9, the first housing part 3a is shrunk in the axial direction 6 with the second housing part 3b. 2 shows an enlarged view of the detail 11 of FIG. 1.
  • the first housing part 3 a is connected to the third housing part 3 c via a shrinkage 11. For this purpose, the first housing part 3a at a front end 12 in a circumferential direction
  • the projection 13 which is aligned in a radial direction 14.
  • the projection 13 in this case extends from a flow channel limiting wall 15 in the radial direction 14 to a projection end 16, which has a projection width 17 in an axial direction 6.
  • a recess 19 is formed, which is bounded by the inner projection wall 18 of a counter-projection wall 20 and a boundary wall 21.
  • a circumferentially oriented projection groove 22 is formed, in which a counter-projection 23 of the third
  • Counter-protrusion 23 substantially corresponds to the width of protrusion groove 22. As can be seen in the cross-sectional view of FIG. 2, the geometrical sizes of counter-protrusion 23 and protrusion groove 22 are substantially identical.
  • the third housing part 3c likewise comprises a counter-projection groove 25, in which the projection 13 is incorporated.
  • the FIG 2 already represents the assembled in the final state, assembled inner housing 3.
  • the third housing part 3c is first heated, in particular in the region of the counter-protrusion groove 25. This increases the Schmidtsprungsnutbreite 26 of the Schmidtsprungsnut 25.
  • the Schmidtsprungsnutbreite 26 should be slightly larger than that by the heating
  • Projection width 17 of the projection 13 Accordingly, the dimensions of the counter-projection 23 and the projection groove 22 must be selected such that a fitting of the first
  • Housing part 3a and the third housing part 3c is possible.
  • the first housing part 3a should have a lower temperature than the temperature of the third housing part 3c.
  • the third housing part 3c cools, whereby the geometric dimensions of the counter-projection groove 25 change, resulting in a reduction of the Gegenvorsprungsnutbreite 26.
  • the dimensions and the temperatures should be selected such that after the cooling process, the projection groove width 26 is less than the projection width 17, so that a very strong
  • Vorsprungsnutbreite 27 is greater than the width 24 of the counter-projection. In a final cooling process, the Vorsprungsnutbreite 27 decreases such that it is ultimately less than the width 24 and thus ashrinking the first housing part 3a with the third housing part 3c allows.
  • Experiencing the shrinkage is not limited to the shrinkage of the first housing part 3a and 3c. It could just as the first housing part 3a with the second housing part 3b are shrunk.
  • the first housing part 3a is in this case of a 10%
  • first housing part 3a Chrome steel manufactured and the second housing part 3b and third housing part 3c of a l% chromium steel.
  • first housing part 3a for example, the material
  • GX12CrMoWVNbNl 0-1-1 can be used.
  • the material for the second housing part 3b and the third housing part 3c can be made identical.

Landscapes

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

Abstract

L'invention concerne un carter (3) pour une turbomachine, en particulier une turbine à vapeur (1), le carter comprenant une première partie de carter (3a), une deuxième partie de carter (3b) et une troisième partie de carter (3c), les parties de carter (3a, 3b, 3c) étant respectivement assemblées l'une à l'autre par frettage (11).
PCT/EP2011/063269 2010-08-25 2011-08-02 Carter pour une turbomachine et procédé pour sa fabrication WO2012025342A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP11740913.6A EP2609298A1 (fr) 2010-08-25 2011-08-02 Carter pour une turbomachine et procédé pour sa fabrication
CN201180041122.XA CN103080482B (zh) 2010-08-25 2011-08-02 用于涡轮机的壳体及其制造方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP10173943.1 2010-08-25
EP10173943A EP2423454A1 (fr) 2010-08-25 2010-08-25 Boîtier pour une turbomachine et procédé de fabrication

Publications (1)

Publication Number Publication Date
WO2012025342A1 true WO2012025342A1 (fr) 2012-03-01

Family

ID=43530086

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/063269 WO2012025342A1 (fr) 2010-08-25 2011-08-02 Carter pour une turbomachine et procédé pour sa fabrication

Country Status (3)

Country Link
EP (2) EP2423454A1 (fr)
CN (1) CN103080482B (fr)
WO (1) WO2012025342A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3421727B1 (fr) * 2017-06-30 2020-01-29 Ansaldo Energia Switzerland AG Turbine à gaz équipée d'un support d'aubes de turbine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1040569B (de) * 1954-07-08 1958-10-09 Westinghouse Electric Corp Befestigung der Duesensegmente im Gehaeuse einer Dampfturbine
DE69302520T2 (de) * 1992-04-17 1996-09-12 Gec Alsthom Electromec Hochdruckdampfturbinengehäuse
DE10052176A1 (de) * 1999-10-21 2001-06-21 Toshiba Kawasaki Kk Dampfturbinenrotor und Verfahren zur Herstellung desselben
EP1559872A1 (fr) * 2004-01-30 2005-08-03 Siemens Aktiengesellschaft Turbomachine
EP1744017A1 (fr) * 2005-07-14 2007-01-17 Siemens Aktiengesellschaft Turbine combinée à vapeur et procédé de fonctionnement d'une turbine combinée à vapeur

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59909395D1 (de) * 1999-01-20 2004-06-09 Alstom Technology Ltd Baden Gehäuse für eine Dampf- oder eine Gasturbine
US6964554B2 (en) * 2003-03-31 2005-11-15 Siemens Westinghouse Power Corporation Drop-in nozzle block for steam turbine
EP1780376A1 (fr) * 2005-10-31 2007-05-02 Siemens Aktiengesellschaft Turbine à vapeur
DE102008043605B4 (de) * 2007-11-16 2015-05-07 Alstom Technology Ltd. Verfahren zur Herstellung eines Turbinengehäuses

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1040569B (de) * 1954-07-08 1958-10-09 Westinghouse Electric Corp Befestigung der Duesensegmente im Gehaeuse einer Dampfturbine
DE69302520T2 (de) * 1992-04-17 1996-09-12 Gec Alsthom Electromec Hochdruckdampfturbinengehäuse
DE10052176A1 (de) * 1999-10-21 2001-06-21 Toshiba Kawasaki Kk Dampfturbinenrotor und Verfahren zur Herstellung desselben
EP1559872A1 (fr) * 2004-01-30 2005-08-03 Siemens Aktiengesellschaft Turbomachine
EP1744017A1 (fr) * 2005-07-14 2007-01-17 Siemens Aktiengesellschaft Turbine combinée à vapeur et procédé de fonctionnement d'une turbine combinée à vapeur

Also Published As

Publication number Publication date
EP2609298A1 (fr) 2013-07-03
CN103080482A (zh) 2013-05-01
EP2423454A1 (fr) 2012-02-29
CN103080482B (zh) 2016-02-03

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