EP2423454A1 - Boîtier pour une turbomachine et procédé de fabrication - Google Patents

Boîtier pour une turbomachine et procédé de fabrication Download PDF

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Publication number
EP2423454A1
EP2423454A1 EP10173943A EP10173943A EP2423454A1 EP 2423454 A1 EP2423454 A1 EP 2423454A1 EP 10173943 A EP10173943 A EP 10173943A EP 10173943 A EP10173943 A EP 10173943A EP 2423454 A1 EP2423454 A1 EP 2423454A1
Authority
EP
European Patent Office
Prior art keywords
housing
housing part
projection
chromium steel
parts
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.)
Withdrawn
Application number
EP10173943A
Other languages
German (de)
English (en)
Inventor
Christoph Kästner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP10173943A priority Critical patent/EP2423454A1/fr
Priority to PCT/EP2011/063269 priority patent/WO2012025342A1/fr
Priority to EP11740913.6A priority patent/EP2609298A1/fr
Priority to CN201180041122.XA priority patent/CN103080482B/zh
Publication of EP2423454A1 publication Critical patent/EP2423454A1/fr
Withdrawn legal-status Critical Current

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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
    • 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
  • Turbomachine wherein the housing has at least two housing parts, wherein the two housing parts are designed to be arranged along an axial axis one behind the other.
  • Steam turbines generally include a rotatably mounted within an inner housing rotor, wherein an outer housing is disposed around the inner housing.
  • the outer housing is designed as a pot housing with a lid.
  • embodiments are also known in which 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.
  • the steam parameters in modern steam turbines have temperature values of, for example, above 600 ° C. at a pressure of more than 350 bar. This means that the inner housing and the rotor are thermally stressed.
  • 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 blades generally comprises a plurality of blade stages, d. h., That the vanes and blades are arranged alternately in a flow direction successively.
  • the temperatures in the inflow region of the steam turbine are comparatively high compared to the temperature at an outlet of the steam turbine. This causes the thermal load along the flow direction to decrease.
  • the material GX12CrMoWVNbN10-1-1 is such a substance that can withstand the high steam temperatures.
  • the temperature in the rear of the steam turbine drops to values well below 565 ° C.
  • the object of the invention is to provide a housing for a turbomachine, which comprises two housing parts and is suitable for high inlet temperatures.
  • a housing for a turbomachine wherein the housing at least two
  • Shrinkage is here understood to mean a process in which a housing part is stretched in a radial direction by heating and is arranged in a second method step over the first housing part and shrinks by a cooling process on the second housing part.
  • a thermally induced expansion and retraction an overall comparatively high force is transmitted from one part to the other part.
  • a welding of the two housing parts is therefore not required.
  • 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 designed as a half-shell, which is connected to a parting line via screws.
  • These two parts are designed here essentially as half shells.
  • the first housing part has a recess formed in a circumferential direction
  • the second housing part has a projection formed in the circumferential direction, wherein the projection is designed for fitting in the recess.
  • the recess has an axial length in which the projection of the second housing part is fitted.
  • the second housing part is formed in the radial direction behind the first housing part.
  • the housing comprises three housing parts, namely a first housing part made of a 10% chromium steel, a second housing part of a 1% chromium steel and a third housing part of a 1% chromium steel, wherein the first housing part in an inflow for a steam turbine is used.
  • the first housing part is connected to one another via the shrinkage process according to the invention.
  • the first and third housing part is also connected to each other via the shrinking process according to the invention.
  • the housing is designed as an inner housing for a steam turbine.
  • FIG. 1 shows a steam turbine 1, comprising an outer housing 2 and a disposed within the outer housing 2 three-part inner housing 3.
  • a rotor 4 not shown having blades, rotatably mounted about a rotation axis 5.
  • the rotor 4 facing side of the inner housing 3 comprises in an axial direction 6 successively arranged vanes, which are not shown in detail.
  • a flow channel 7 is thus formed.
  • FIG. 1 1 shows 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.
  • the temperatures in the inflow region 8 are comparatively high, so that the inner casing 3 is particularly thermally stressed in the inflow region 8.
  • 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 inlet temperature of the steam flowing in via the inflow region 8 could be temperatures of more than 565 ° C.
  • a suitable material that can withstand these thermal stresses is a 10% chromium steel such as the GX12CrMoWVNbN10-1-1.
  • the material for the first housing part 3a should therefore be formed from this comparatively expensive 10% chromium steel.
  • the arranged in the right tide 10 and in the left tide 9 second housing part 3b and third housing part 3c could be formed of a less expensive material, such. B. from a 1% chromium steel.
  • the first housing part 3a, the second housing part 3b and the third housing part 3c are, as in the FIG. 1 not shown in detail, manufactured as half shells. This means that in a cross-sectional view, ie 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 casing 3 is formed by a comparatively symmetrically formed half-shell-shaped inner casing 3 to form an entire inner casing 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.
  • the FIG. 2 shows an enlarged view of the detail 11 FIG. 1 ,
  • the first housing part 3a is connected to the third housing part 3c via a shrinkage 11 with each other.
  • the first housing part 3a at a front end 12 has a projection 13 formed in a circumferential direction, 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.
  • On an inner projection wall 18, the projection 13 is bounded in the axial direction 6.
  • a recess 19 which is bounded by the inner projection wall 18 of a counter-projection wall 20 and a boundary wall 21 is formed.
  • a circumferentially oriented projection groove 22 is formed into which a counter projection 23 of the third case 3c is fitted.
  • a width 24 of the counter-projection 23 corresponds substantially to the width of the projection groove 22.
  • the geometric sizes of the counter-projection 23 and the projection 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 in particular in the region of the counter-projection groove 25 is heated. This increases the Gegenvorsprungsnutbreite 26 of the Gegenvorsprungsnut 25.
  • the Jacobvorsprungsnutbreite 26 should be slightly larger than the projection width 17 of the projection 13 by the heating. 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 Schmidtsprungsnutbreite 26.
  • the dimensions and the temperatures should be chosen such that after the cooling process, the projection groove width 26 is smaller than the projection width 17, so that a very firm Verschschrumpfungsimpl formed. Moving the projection 13 against the Schwarzvorsprungsnut 25 should not be possible after the cooling process.
  • the shrink-fitting process 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 made of a 10% chromium steel and the second housing part 3b and the third housing part 3c made of a 1% chromium steel.
  • the material GX12CrMoWVNbN10-1-1 can be used for the first housing part 3a.
  • 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)
EP10173943A 2010-08-25 2010-08-25 Boîtier pour une turbomachine et procédé de fabrication Withdrawn EP2423454A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP10173943A EP2423454A1 (fr) 2010-08-25 2010-08-25 Boîtier pour une turbomachine et procédé de fabrication
PCT/EP2011/063269 WO2012025342A1 (fr) 2010-08-25 2011-08-02 Carter pour une turbomachine et procédé pour sa fabrication
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 (1)

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

Publications (1)

Publication Number Publication Date
EP2423454A1 true EP2423454A1 (fr) 2012-02-29

Family

ID=43530086

Family Applications (2)

Application Number Title Priority Date Filing Date
EP10173943A Withdrawn EP2423454A1 (fr) 2010-08-25 2010-08-25 Boîtier pour une turbomachine et procédé de fabrication
EP11740913.6A Withdrawn EP2609298A1 (fr) 2010-08-25 2011-08-02 Carter pour une turbomachine et procédé pour sa fabrication

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP11740913.6A Withdrawn EP2609298A1 (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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3421727A1 (fr) * 2017-06-30 2019-01-02 Ansaldo Energia Switzerland AG Support d'aubes de turbine à gaz et turbine à gaz équipée d'un tel 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
DE10052176A1 (de) * 1999-10-21 2001-06-21 Toshiba Kawasaki Kk Dampfturbinenrotor und Verfahren zur Herstellung desselben
DE69302520T3 (de) * 1992-04-17 2002-12-05 Gec Alsthom Electromec Hochdruckdampfturbinengehäuse
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
EP1022439B1 (fr) * 1999-01-20 2004-05-06 ALSTOM Technology Ltd Carter de turbine à vapeur ou à gaz
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
DE69302520T3 (de) * 1992-04-17 2002-12-05 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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3421727A1 (fr) * 2017-06-30 2019-01-02 Ansaldo Energia Switzerland AG Support d'aubes de turbine à gaz et turbine à gaz équipée d'un tel support d'aubes de turbine
CN109209516A (zh) * 2017-06-30 2019-01-15 安萨尔多能源瑞士股份公司 燃气涡轮的涡轮导叶载体和包括涡轮导叶载体的燃气涡轮

Also Published As

Publication number Publication date
WO2012025342A1 (fr) 2012-03-01
CN103080482B (zh) 2016-02-03
CN103080482A (zh) 2013-05-01
EP2609298A1 (fr) 2013-07-03

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