EP2333253A1 - Innengehäuse für eine Strömungsmaschine - Google Patents

Innengehäuse für eine Strömungsmaschine Download PDF

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Publication number
EP2333253A1
EP2333253A1 EP09015210A EP09015210A EP2333253A1 EP 2333253 A1 EP2333253 A1 EP 2333253A1 EP 09015210 A EP09015210 A EP 09015210A EP 09015210 A EP09015210 A EP 09015210A EP 2333253 A1 EP2333253 A1 EP 2333253A1
Authority
EP
European Patent Office
Prior art keywords
inner housing
parting line
steam
housing
turbo
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Withdrawn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
EP09015210A
Other languages
German (de)
English (en)
French (fr)
Inventor
Christian Cukjati
Heinz Dallinger
Thomas Müller
Norbert Thamm
Andreas Ulma
Michael Wechsung
Uwe Zander
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 EP09015210A priority Critical patent/EP2333253A1/de
Priority to PL10790396.5T priority patent/PL2510195T3/pl
Priority to CN2010800555397A priority patent/CN102648335A/zh
Priority to EP10790396.5A priority patent/EP2510195B1/de
Priority to PCT/EP2010/069010 priority patent/WO2011069982A1/de
Publication of EP2333253A1 publication Critical patent/EP2333253A1/de
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • 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
    • 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
    • F05D2220/00—Application
    • F05D2220/70—Application in combination with
    • F05D2220/72—Application in combination with a steam turbine
    • 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
    • F05D2240/00—Components
    • F05D2240/10—Stators
    • F05D2240/14—Casings or housings protecting or supporting assemblies within

Definitions

  • the invention relates to an inner housing for a turbomachine, wherein the inner housing comprises a first part and a second part.
  • a steam turbine conventionally includes a rotatably mounted rotor and a housing disposed about the rotor. Between the rotor and the inner housing, a flow channel is formed.
  • the housing in a steam turbine must be able to fulfill several functions.
  • the guide vanes are arranged in the flow channel on the housing and, secondly, the inner housing must withstand the pressure and the temperatures of the flow medium for all load and special operating cases.
  • the flow medium is steam.
  • the housing must be designed such that inlets and outlets, which are also referred to as taps, are possible. Another feature that a case must meet is the possibility of a shaft end passing through the case.
  • the high voltages, pressures, and temperatures that occur during operation require that the materials be properly selected and that the design be selected to provide mechanical integrity and functionality. This requires that high-quality materials are used, especially in the area of the inflow and the first Leitschaufelnuten.
  • nickel-based alloys are suitable because they are the high temperatures occurring loads withstand.
  • the use of such a nickel-based alloy is associated with new challenges.
  • the cost of nickel-base alloys is relatively high and also the manufacturability of nickel-based alloys, for example limited by limited casting possibility.
  • the use of nickel-based materials must be minimized.
  • the nickel-based materials are poor heat conductors.
  • the temperature gradients over the wall thickness are so rigid that thermal stresses are comparatively high.
  • Steam turbines which are designed for high pressures and high steam temperatures, usually have an inner housing and an outer housing.
  • the outer housing is usually designed in two parts and has a horizontal parting line, wherein embodiments are known in which the outer housing is designed as a pot housing.
  • the inner housing is usually made in two parts and has a horizontal parting line.
  • the inner housing has inlet openings, which must be sufficiently dimensioned to the necessary for the power generation and the steam valves supplied steam masses or Record vapor flow. In addition, the steam mass and the steam volume flow must be performed evenly to the turbine blading.
  • Conventional steam turbines have an inner housing, which consists of an upper part and a lower part.
  • the distance from the horizontal parting line to the center of the steam turbine is defined by the required cross-section, which is required for the passage of the steam mass flow.
  • This definition also defines the requirements for the part-joint screws.
  • the partial joint screw design must be dimensioned such that the screw force is sufficient to counteract the compressive force resulting from the vapor pressure and the cross-sectional area and thus to ensure the Generalfugendimi.
  • the inflow takes place via two inlet openings in the lower part.
  • the supply of the upper part via the passage area in the region of the horizontal parting line.
  • the dimensioning of the parting screw is done via the cross-sectional area in the parting line. For large cross-sectional areas, higher-quality screw designs must be used.
  • the invention is based, whose task is to provide an inner housing can be used in the smaller-sized parting screws.
  • an inner housing for a turbomachine wherein the inner housing a first part and comprises a second part, wherein between the first part and the second part a vertical parting line is formed.
  • the invention is based on the aspect that a horizontal parting can be omitted and instead a vertical parting line is used.
  • the vertical parting line is thus in the 12 and 6 o'clock position. Due to the vertical parting line and the associated flow of the inflow channel, the cross-sectional area on which the screw dimensioning is based can be reduced.
  • the part-joint screws can be arranged closer to the center of the turbine, which is accompanied by a reduction of the dimensioning of the part-joint screw design pressure surfaces.
  • One effect of this is that smaller screw sizes can be used.
  • an inferior screw material as well as smaller inner shell castings can be used. The overall leads to a cost reduction.
  • the first part and / or the second part has inflow openings, which are advantageously made substantially symmetrical.
  • the steam turbine 1 shown in FIG. 1 is an embodiment of a turbomachine.
  • the steam turbine 1 comprises an outer housing 2 and an inner housing 3.
  • a rotor not shown, is rotatably mounted about a rotation axis 4.
  • the inner housing 3 comprises a first part 3a and a second part 3b.
  • the first part 3a and the second part 3b is formed via a vertical parting line 5.
  • the first part 3a and the second part 3b is held together by not shown detail part screws on the vertical parting line 5.
  • the vertical parting line 5 refers to a horizontal line 6, which corresponds to the natural horizontal in operation.
  • the vertical parting line 5 does not have to be rotated exactly 90 ° with respect to the horizontal line 6. Rather, the vertical parting line in an angular range of -10 ° to + 10 ° relative to the theoretically exact vertical line, which is shifted 90 ° relative to the horizontal line 6, be formed.
  • the first part 3a and the second part 3b each have an inflow opening 7, via which a steam flows in operation into a flow channel, not shown.
  • the outer housing 2 has a horizontal parting line 8. Therefore, the outer case 2 has an upper part 2a and a lower part 2b.
  • the steam turbine 1 can be used in the high pressure range or in the medium pressure range.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP09015210A 2009-12-08 2009-12-08 Innengehäuse für eine Strömungsmaschine Withdrawn EP2333253A1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP09015210A EP2333253A1 (de) 2009-12-08 2009-12-08 Innengehäuse für eine Strömungsmaschine
PL10790396.5T PL2510195T3 (pl) 2009-12-08 2010-12-07 Obudowa wewnętrzna dla turbiny parowej
CN2010800555397A CN102648335A (zh) 2009-12-08 2010-12-07 用于流体机械的内壳体
EP10790396.5A EP2510195B1 (de) 2009-12-08 2010-12-07 Innengehäuse für eine Dampfturbine
PCT/EP2010/069010 WO2011069982A1 (de) 2009-12-08 2010-12-07 Innengehäuse für eine strömungsmaschine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09015210A EP2333253A1 (de) 2009-12-08 2009-12-08 Innengehäuse für eine Strömungsmaschine

Publications (1)

Publication Number Publication Date
EP2333253A1 true EP2333253A1 (de) 2011-06-15

Family

ID=42167271

Family Applications (2)

Application Number Title Priority Date Filing Date
EP09015210A Withdrawn EP2333253A1 (de) 2009-12-08 2009-12-08 Innengehäuse für eine Strömungsmaschine
EP10790396.5A Not-in-force EP2510195B1 (de) 2009-12-08 2010-12-07 Innengehäuse für eine Dampfturbine

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP10790396.5A Not-in-force EP2510195B1 (de) 2009-12-08 2010-12-07 Innengehäuse für eine Dampfturbine

Country Status (4)

Country Link
EP (2) EP2333253A1 (zh)
CN (1) CN102648335A (zh)
PL (1) PL2510195T3 (zh)
WO (1) WO2011069982A1 (zh)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH125062A (de) * 1927-03-16 1928-03-16 Oerlikon Maschf Hochdruck-Dampf- oder Gasturbine.
US3754833A (en) * 1970-11-05 1973-08-28 Kraftwerk Union Ag Device for radially centering turbine housings
DE3421067A1 (de) 1983-06-10 1984-12-13 Hitachi, Ltd., Tokio/Tokyo Hauptdampf-einlasseinheit fuer eine dampfturbine
WO1997038209A1 (de) * 1996-04-11 1997-10-16 Siemens Aktiengesellschaft Verfahren und vorrichtung zum schubausgleich bei einer turbomaschine
DE10336978B3 (de) * 2003-08-12 2005-01-13 Mtu Friedrichshafen Gmbh Trägergehäuse für einen oder mehrere Abgasturbolader einer Brennkraftmaschine
DE10353451A1 (de) 2003-11-15 2005-06-16 Alstom Technology Ltd Dampfturbine sowie Verfahren zum Herstellen einer solchen Dampfturbine
DE102006027237A1 (de) 2005-06-14 2006-12-28 Alstom Technology Ltd. Dampfturbine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6609881B2 (en) * 2001-11-15 2003-08-26 General Electric Company Steam turbine inlet and methods of retrofitting
US6964554B2 (en) * 2003-03-31 2005-11-15 Siemens Westinghouse Power Corporation Drop-in nozzle block for steam turbine
JP2006016976A (ja) * 2004-06-30 2006-01-19 Toshiba Corp タービンノズル支持装置および蒸気タービン

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH125062A (de) * 1927-03-16 1928-03-16 Oerlikon Maschf Hochdruck-Dampf- oder Gasturbine.
US3754833A (en) * 1970-11-05 1973-08-28 Kraftwerk Union Ag Device for radially centering turbine housings
DE3421067A1 (de) 1983-06-10 1984-12-13 Hitachi, Ltd., Tokio/Tokyo Hauptdampf-einlasseinheit fuer eine dampfturbine
WO1997038209A1 (de) * 1996-04-11 1997-10-16 Siemens Aktiengesellschaft Verfahren und vorrichtung zum schubausgleich bei einer turbomaschine
DE10336978B3 (de) * 2003-08-12 2005-01-13 Mtu Friedrichshafen Gmbh Trägergehäuse für einen oder mehrere Abgasturbolader einer Brennkraftmaschine
DE10353451A1 (de) 2003-11-15 2005-06-16 Alstom Technology Ltd Dampfturbine sowie Verfahren zum Herstellen einer solchen Dampfturbine
DE102006027237A1 (de) 2005-06-14 2006-12-28 Alstom Technology Ltd. Dampfturbine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ARTIKEL Y. TANAKA ET AL.: "Advanced Design of Mitsubishi Large Steam Turbines", MITSUBISHI HEAVY INDUSTRIES, POWER GEN EUROPE, 2003

Also Published As

Publication number Publication date
CN102648335A (zh) 2012-08-22
EP2510195A1 (de) 2012-10-17
WO2011069982A1 (de) 2011-06-16
PL2510195T3 (pl) 2016-10-31
EP2510195B1 (de) 2016-03-23

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