EP1735525A1 - Turbomachine - Google Patents

Turbomachine

Info

Publication number
EP1735525A1
EP1735525A1 EP05701171A EP05701171A EP1735525A1 EP 1735525 A1 EP1735525 A1 EP 1735525A1 EP 05701171 A EP05701171 A EP 05701171A EP 05701171 A EP05701171 A EP 05701171A EP 1735525 A1 EP1735525 A1 EP 1735525A1
Authority
EP
European Patent Office
Prior art keywords
turbine
steam
pressure
inner housing
turbine shaft
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.)
Granted
Application number
EP05701171A
Other languages
German (de)
English (en)
Other versions
EP1735525B1 (fr
Inventor
Norbert Thamm
Andreas Ulma
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34639429&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1735525(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Siemens AG filed Critical Siemens AG
Priority to PL05701171T priority Critical patent/PL1735525T3/pl
Priority to EP05701171A priority patent/EP1735525B1/fr
Publication of EP1735525A1 publication Critical patent/EP1735525A1/fr
Application granted granted Critical
Publication of EP1735525B1 publication Critical patent/EP1735525B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
    • 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
    • F05D2240/00—Components
    • F05D2240/60—Shafts
    • 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
    • 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
    • F05D2300/50—Intrinsic material properties or characteristics
    • F05D2300/502—Thermal properties

Definitions

  • the invention relates to a turbomachine with an inner housing and a rotatably mounted turbine shaft.
  • a steam turbine as an embodiment of a turbomachine in the context of the present application is understood to mean any turbine or part turbine through which a working medium flows in the form of steam.
  • gas turbines are traversed with gas and / or air as the working medium, which, however, is subject to completely different temperature and pressure conditions than the steam in a steam turbine.
  • gas turbines has steam turbines z.
  • the working medium with the highest temperature, which flows into a partial turbine has the highest pressure.
  • a steam turbine usually comprises a turbine-shaft-bearing, rotatably mounted turbine shaft which is arranged inside an inner housing. When flowing through the interior of the housing formed by the inner space of the flow space with heated and pressurized steam, the turbine shaft is rotated via the blade by the steam in rotation.
  • the blades of the turbine shaft are also referred to as blades.
  • guide vanes are usually suspended, which engage in the intermediate spaces of the rotor blades.
  • the inner housing can also be called a housing shell.
  • a vane is typically held at a first location along an interior of the steam turbine casing. In this case, it is usually part of a vane ring, which comprises a number of vanes, which are arranged along an inner circumference of the inner housing. Each Leitschaufei points with its blade radially inward.
  • Steam turbines or steam turbine engines can be divided into high-pressure, medium-pressure or low-pressure turbine sections. The inlet temperatures and inlet pressures of high-pressure turbine sections may be 600 ° C or 300 bar.
  • Single-stage steam turbines which represent a combination of a high-pressure and a medium-pressure steam turbine. These steam turbines are characterized by a common housing and a common turbine shaft and are also referred to as compact turbine sections.
  • a material made of chromium-containing material is usually used.
  • the chromium-containing material is usually a chromium steel with 9 to 12 wt.% Chromium content. So far, the same material was used as material for the inner housing, which is also used for the turbine shaft. This was justified with necessarily the same coefficients of thermal expansion for the shaft and the housing.
  • the use of the chromium-containing material for the turbine shaft and the inner housing leads to cost-intensive embodiments of a steam turbine.
  • the object of the present invention is to provide a turbomachine, in particular a steam turbine, with an inner housing and a rotatably mounted turbine shaft, which can be designed to be simpler in terms of production.
  • a turbomachine with an inner housing and a rotatably mounted turbine shaft, wherein the inner housing and the turbine shaft are made of different materials, wherein the inner housing is made of a material with low heat resistance, as the material from which the turbine shaft is made , wherein the turbine shaft is made of a chromium steel with 9 to 12 wt.% Chromium and the inner housing of a chromium frame with 1 to 2 wt.% Chromium.
  • the invention is based on the finding that the use of the same high chromium-containing materials for both the turbine shaft and the inner housing is not necessary. It was surprisingly found that the
  • Thermal expansion for high steam conditions in the masses used for the turbine shaft and the inner housing are less than a predetermined tolerance limit.
  • the possibility is created to use for the inner housing a material that has a lower heat resistance compared to the material used for the turbine shaft.
  • the material used for the inner case may have higher mechanical strength.
  • Hot strength is understood to mean a permissible stress stress at high temperatures.
  • a chrome steel with 9 to 12 wt.% Chromium has a high
  • a chrome steel with 1 Although up to 2% by weight of chromium has a lower heat resistance than chromium steel with 9 to 12% by weight of chromium, it does have a higher mechanical strength. Therefore, a chromium steel with 1 to 2 wt.% Chromium is very well suited in environments with lower thermal loads. In particular, this is
  • Chromium steel suitable for inner housings in steam turbines with high steam conditions Chromium steel suitable for inner housings in steam turbines with high steam conditions.
  • the inner housing and the turbine shaft at least partially on areas that are designed for use at temperatures above 550 ° C.
  • various materials for the inner casing and for the turbine shaft is particularly suitable in steam turbines, high-pressure turbine sections, medium-pressure turbine sections, combined high-pressure and medium-pressure turbine sections or combined medium-pressure and low-pressure turbine sections.
  • the various materials can be used in pumps, compressors, gas turbines or compressors.
  • FIG. 1 a sectional view of a compact steam turbine 1 is shown.
  • the compact steam turbine 1 has an outer housing 2, in which a turbine shaft 3 is rotatably mounted about a rotation axis 4.
  • the compact steam turbine 1 has an inner housing 5 with a high-pressure part 6 and a medium-pressure part 7. In the high pressure part 6 different vanes 8 are attached. In the middle pressure part 7, a number of vanes 9 is also attached.
  • the turbine shaft 3 is rotatably supported by bearings 10, 11.
  • the inner housing 5 is connected to the outer housing 2.
  • the steam turbine 1 has a high-pressure section 12 and a medium-pressure section 13. In the high pressure section 12 blades 14 are mounted. In the middle pressure section 13 as well blades 15 are attached.
  • the live steam flows through the individual guide vanes 8 and rotor blades 14 in the high-pressure part 12 and is thereby expanded and cooled.
  • the inner housing 5 and the turbine shaft 3 should be designed for temperatures above 550 ° C.
  • the thermal energy of the live steam is converted into rotational energy of the turbine shaft 3.
  • the turbine shaft 3 is thereby rotated in a direction shown about the rotation axis 4 in rotation.
  • the turbine shaft 3 is mounted in a bearing area 23 with the outer housing 5.
  • the blades 14, 15 are not shown in detail.
  • the live steam initially strikes the middle region 16 of the turbine shaft 3 and relaxes in the high-pressure part 6.
  • the live steam cools down here.
  • the reheater the steam expanded from the high-pressure part flows back into the middle region 20 at a high temperature.
  • the reheated steam initially flows at the location of the medium-pressure inflow region 18 onto the turbine shaft 3 and relaxes and cools in the direction of the medium-pressure part 7 ,
  • the relaxed and cooled in the middle pressure part 7 steam then flows then from the compact turbine part 1.
  • the turbine shaft 3 has a high heat resistant material.
  • the high-temperature resistant material is a chromium steel with 9 to 12 wt.% Chromium content.
  • the inner housing 5 is made of a different material.
  • the inner housing 5 is made of a material with lower heat resistance than the material from which the turbine shaft 3 is made.
  • the inner housing is made in particular of a chromium steel with 1 to 2 wt.% Chromium.
  • Different materials can be used for the turbine shaft 3 and for the inner casing 5 in high-pressure turbine sections, in medium-pressure turbine sections, combined high-pressure and medium-pressure turbine sections or combined medium-pressure and low-pressure turbine sections, pumps, compressors, gas turbines or compressors.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

L'invention concerne une turbomachine, en particulier une turbine à vapeur, comprenant un logement interne (5) et un arbre de turbine (3) monté rotatif. Cette invention est caractérisée en ce que le logement interne (5) et l'arbre de turbine (3) sont produits à partir de différents matériaux : l'arbre de turbine (3) est produit à partir d'un acier chromé comportant entre 9 et 12 % en poids de chrome, tandis que le logement interne (5) est produit à partir d'un acier chromé comportant entre 1 et 2 % en poids de chrome.
EP05701171A 2004-01-30 2005-01-25 Turbine à vapeur Not-in-force EP1735525B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL05701171T PL1735525T3 (pl) 2004-01-30 2005-01-25 Turbina parowa
EP05701171A EP1735525B1 (fr) 2004-01-30 2005-01-25 Turbine à vapeur

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP04002157A EP1559872A1 (fr) 2004-01-30 2004-01-30 Turbomachine
EP05701171A EP1735525B1 (fr) 2004-01-30 2005-01-25 Turbine à vapeur
PCT/EP2005/000710 WO2005073517A1 (fr) 2004-01-30 2005-01-25 Turbomachine

Publications (2)

Publication Number Publication Date
EP1735525A1 true EP1735525A1 (fr) 2006-12-27
EP1735525B1 EP1735525B1 (fr) 2007-07-18

Family

ID=34639429

Family Applications (2)

Application Number Title Priority Date Filing Date
EP04002157A Withdrawn EP1559872A1 (fr) 2004-01-30 2004-01-30 Turbomachine
EP05701171A Not-in-force EP1735525B1 (fr) 2004-01-30 2005-01-25 Turbine à vapeur

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP04002157A Withdrawn EP1559872A1 (fr) 2004-01-30 2004-01-30 Turbomachine

Country Status (8)

Country Link
US (1) US7404699B2 (fr)
EP (2) EP1559872A1 (fr)
JP (1) JP4532507B2 (fr)
CN (1) CN100404794C (fr)
DE (1) DE502005001076D1 (fr)
ES (1) ES2287892T3 (fr)
PL (1) PL1735525T3 (fr)
WO (1) WO2005073517A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4509664B2 (ja) * 2003-07-30 2010-07-21 株式会社東芝 蒸気タービン発電設備
EP2022951A1 (fr) * 2007-08-08 2009-02-11 Siemens Aktiengesellschaft Procédé destiné à la fabrication d'un boîtier de turbine et boîtier de turbine
US20110030374A1 (en) * 2008-08-11 2011-02-10 Shin Nishimoto Steam turbine facility
EP2187004A1 (fr) * 2008-11-13 2010-05-19 Siemens Aktiengesellschaft Boîtier intérieur pour une turbomachine
EP2336506A1 (fr) * 2009-12-15 2011-06-22 Siemens Aktiengesellschaft Turbine a vapeur dans une construction à trois coque
EP2423454A1 (fr) * 2010-08-25 2012-02-29 Siemens Aktiengesellschaft Boîtier pour une turbomachine et procédé de fabrication
US20120189460A1 (en) * 2011-01-21 2012-07-26 General Electric Company Welded Rotor, a Steam Turbine having a Welded Rotor and a Method for Producing a Welded Rotor
EP2565377A1 (fr) * 2011-08-31 2013-03-06 Siemens Aktiengesellschaft Turbine à vapeur à double flux
CN105324554B (zh) * 2013-06-28 2017-05-24 三菱重工压缩机有限公司 轴流膨胀机
US10385832B2 (en) 2013-06-28 2019-08-20 Exxonmobil Upstream Research Company Systems and methods of utilizing axial flow expanders
DE102017211295A1 (de) * 2017-07-03 2019-01-03 Siemens Aktiengesellschaft Dampfturbine und Verfahren zum Betreiben derselben
JP2022003244A (ja) * 2020-06-23 2022-01-11 東芝エネルギーシステムズ株式会社 超臨界ｃｏ２タービン

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0641723B2 (ja) * 1984-06-20 1994-06-01 株式会社日立製作所 蒸気タ−ビン
US5383768A (en) * 1989-02-03 1995-01-24 Hitachi, Ltd. Steam turbine, rotor shaft thereof, and heat resisting steel
JPH0734202A (ja) * 1993-07-23 1995-02-03 Toshiba Corp 蒸気タービン用ロータ
JP3315800B2 (ja) * 1994-02-22 2002-08-19 株式会社日立製作所 蒸気タービン発電プラント及び蒸気タービン
EP0759499B2 (fr) * 1995-08-21 2005-12-14 Hitachi, Ltd. Installation de turbines à vapeur et turbine à vapeur
JPH0959747A (ja) * 1995-08-25 1997-03-04 Hitachi Ltd 高強度耐熱鋳鋼，蒸気タービンケーシング，蒸気タービン発電プラント及び蒸気タービン
JP3898785B2 (ja) * 1996-09-24 2007-03-28 株式会社日立製作所 高低圧一体型蒸気タービン用動翼と高低圧一体型蒸気タービン及びコンバインド発電システム並びに複合発電プラント
JP3666256B2 (ja) * 1998-08-07 2005-06-29 株式会社日立製作所 蒸気タービン翼の製造方法
JP2001221012A (ja) * 2000-02-10 2001-08-17 Toshiba Corp 蒸気タービンおよび発電設備

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005073517A1 *

Also Published As

Publication number Publication date
EP1735525B1 (fr) 2007-07-18
US7404699B2 (en) 2008-07-29
JP2007519851A (ja) 2007-07-19
ES2287892T3 (es) 2007-12-16
JP4532507B2 (ja) 2010-08-25
EP1559872A1 (fr) 2005-08-03
US20070166152A1 (en) 2007-07-19
CN1930374A (zh) 2007-03-14
WO2005073517A1 (fr) 2005-08-11
CN100404794C (zh) 2008-07-23
DE502005001076D1 (de) 2007-08-30
PL1735525T3 (pl) 2007-12-31

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