EP1022439B1 - Carter de turbine à vapeur ou à gaz - Google Patents

Carter de turbine à vapeur ou à gaz Download PDF

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Publication number
EP1022439B1
EP1022439B1 EP99810037A EP99810037A EP1022439B1 EP 1022439 B1 EP1022439 B1 EP 1022439B1 EP 99810037 A EP99810037 A EP 99810037A EP 99810037 A EP99810037 A EP 99810037A EP 1022439 B1 EP1022439 B1 EP 1022439B1
Authority
EP
European Patent Office
Prior art keywords
flanges
facing away
wall thickness
facing
housing
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.)
Expired - Lifetime
Application number
EP99810037A
Other languages
German (de)
English (en)
Other versions
EP1022439A1 (fr
Inventor
Christoph Dr. Beerens
Josef Huster
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.)
General Electric Technology GmbH
Original Assignee
Alstom Technology 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 Alstom Technology AG filed Critical Alstom Technology AG
Priority to EP99810037A priority Critical patent/EP1022439B1/fr
Priority to DE59909395T priority patent/DE59909395D1/de
Priority to US09/482,082 priority patent/US6336789B1/en
Priority to JP2000008323A priority patent/JP4347977B2/ja
Priority to RU2000101728/06A priority patent/RU2244835C2/ru
Priority to CN00100518.9A priority patent/CN1268833C/zh
Publication of EP1022439A1 publication Critical patent/EP1022439A1/fr
Application granted granted Critical
Publication of EP1022439B1 publication Critical patent/EP1022439B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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

Definitions

  • the invention relates to a housing for a steam or gas turbine, which consists of a shell and two flanges.
  • Compressor housings for gas turbines consist of a shell and there are two flanges. These housings have upper and lower areas a pseudo flange on the shell.
  • these have the disadvantage that with Operation of the gas turbine due to the higher mean temperature in the area of Pseudo flange larger radial strains occur and thus the housing of deviates from its round shape.
  • These deformations lead to a reduced Efficiency because of the gap between the housing and the ends of the Turbine blades enlarged and steam or air unhindered at this point can flow through without performing work on the turbine.
  • Housing for steam turbines consist of a shell and there are two flanges and vertical ones in the horizontal flanges Have slots.
  • the radial becomes Round bowl shape is an ellipsoidal shape, with the bowl facing upwards expands and the two flanges are moved slightly inwards.
  • axial the radial effects affect due to the different temperature distribution different within the housing and thus also lead to one Deformation.
  • US-A-4,551,065 discloses a housing according to the preamble of claim 1.
  • GB-A-2 0 035 12 discloses a method of manufacturing a casing for a gas turbine.
  • expensive Constructions and assembly devices can be avoided.
  • the object is achieved in that the shell different Wall thicknesses in an upper area facing away from the flanges, in two middle areas and in two lower areas facing the flanges has, the wall thickness of the upper region facing away from the flanges compared to the wall thickness of the lower areas facing the flanges is reinforced and the wall thickness of the central areas is variable, so that the upper area facing away from the flanges and the lower area facing away from the flanges facing areas continuously merge.
  • An advantage of this invention is that by varying the wall thickness Shell of the housing undergoes deformation in an ellipsoidal shape both in radial Direction as well as in the axial direction is significantly reduced.
  • the housing has thus a slight radial play between the housing and the ends of the Turbine blades and thus has a significantly improved efficiency compared to the prior art.
  • Overall, the invention is a improved efficiency of 0.2% to 0.3% of a steam turbine achieved.
  • the single figure shows a section through an embodiment of a housing according to the invention.
  • the single figure shows a section through an embodiment of a Housing 1 according to the invention, which is used for steam or gas turbines becomes.
  • the entire case consists of two equal halves, only one of which is shown.
  • the housing 1 consists of a shell 2 and two flanges 3, soft for attachment to the flanges of the second half, not shown Housing 1 is used.
  • the wall thickness of the shell 2 varies in different areas.
  • An upper area 5 facing away from the flanges is opposite the lower one Flanges facing areas 7 reinforced. In the illustrated embodiment corresponds to the wall thickness of the upper region 5 facing away from the flanges 1.5 times the wall thickness of the lower areas facing the flanges 7.
  • the reinforcement of the upper region 5 facing away from the flanges no more than twice the Wall thickness of the lower areas 7 facing the flanges should have.
  • the upper area 5 facing away from the flanges and the lower area facing the flanges facing areas 7 are marked on each side by a central area 6 connected.
  • the wall thickness of these middle areas 6 varies, so that on each Since the two adjacent areas 5,7 merge continuously.
  • the upper area facing away from the flanges 5 at 45 ° around the central axis 4 of the housing 1. After that the middle area 6 adjoins on both sides with 15 °.

Landscapes

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

Claims (4)

  1. Carter (1) pour une turbine à vapeur ou à gaz, se composant de deux coques semi-cylindriques (2) qui sont connectées dans le plan de l'axe du carter par des brides (3),
    caractérisé en ce que
    chacune des coques (2) présente diverses épaisseurs de paroi dans une région supérieure (5) opposée aux brides, dans deux régions centrales (6) et dans deux régions inférieures (7) tournées vers les brides,
    l'épaisseur de paroi de la région supérieure (5) opposée aux brides étant renforcée par rapport à l'épaisseur de paroi des régions inférieures (7) tournées vers les brides et
    l'épaisseur de paroi des régions centrales (6) étant variable de sorte que la région supérieure (5) opposée aux brides et les régions inférieures (7) tournées vers les brides se prolongent en continu les unes dans les autres.
  2. Carter (1) selon la revendication 1,
    caractérisé en ce que
    la région supérieure (5) opposée aux brides est disposée suivant un angle de 45° autour de l'axe médian (4) du carter (1) et les régions centrales (6) s'y raccordent avec un angle de 15°.
  3. Carter (1) selon la revendication 3,
    caractérisé en ce que
    l'épaisseur de paroi de la région supérieure (5) opposée aux brides a au maximum le double de l'épaisseur de paroi des régions inférieures (7) tournées vers les brides.
  4. Carter (1) selon la revendication 3,
    caractérisé en ce que
    l'épaisseur de paroi de la région supérieure (5) opposée aux brides a une épaisseur de paroi une fois et demie plus grande que l'épaisseur de paroi des régions inférieures (7) tournées vers les brides.
EP99810037A 1999-01-20 1999-01-20 Carter de turbine à vapeur ou à gaz Expired - Lifetime EP1022439B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP99810037A EP1022439B1 (fr) 1999-01-20 1999-01-20 Carter de turbine à vapeur ou à gaz
DE59909395T DE59909395D1 (de) 1999-01-20 1999-01-20 Gehäuse für eine Dampf- oder eine Gasturbine
US09/482,082 US6336789B1 (en) 1999-01-20 2000-01-13 Casing for a steam or gas turbine
JP2000008323A JP4347977B2 (ja) 1999-01-20 2000-01-17 蒸気タービン又はガスタービンのためのケーシング
RU2000101728/06A RU2244835C2 (ru) 1999-01-20 2000-01-19 Корпус для паровой или газовой турбины
CN00100518.9A CN1268833C (zh) 1999-01-20 2000-01-20 汽轮机或燃气轮机的壳体

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99810037A EP1022439B1 (fr) 1999-01-20 1999-01-20 Carter de turbine à vapeur ou à gaz

Publications (2)

Publication Number Publication Date
EP1022439A1 EP1022439A1 (fr) 2000-07-26
EP1022439B1 true EP1022439B1 (fr) 2004-05-06

Family

ID=8242634

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99810037A Expired - Lifetime EP1022439B1 (fr) 1999-01-20 1999-01-20 Carter de turbine à vapeur ou à gaz

Country Status (6)

Country Link
US (1) US6336789B1 (fr)
EP (1) EP1022439B1 (fr)
JP (1) JP4347977B2 (fr)
CN (1) CN1268833C (fr)
DE (1) DE59909395D1 (fr)
RU (1) RU2244835C2 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60310054T2 (de) * 2003-06-26 2007-05-03 Alstom Technology Ltd. Ein Halter für ein reflektierendes Ziel, angewendet zur Messung der Durchbiegung eines Turbinengehäuses
EP1541810A1 (fr) * 2003-12-11 2005-06-15 Siemens Aktiengesellschaft Utilisation de revêtement de barrière thermique pour un élément d'une turbine à vapeur et une turbine à vapeur
DE102005015150A1 (de) * 2005-03-31 2006-10-05 Alstom Technology Ltd. Maschinengehäuse
US7681601B2 (en) * 2005-08-24 2010-03-23 Alstom Technology Ltd. Inner casing of a rotating thermal machine
CH698879B1 (de) * 2006-06-30 2009-11-30 Alstom Technology Ltd Strömungsmaschine.
US8128353B2 (en) * 2008-09-30 2012-03-06 General Electric Company Method and apparatus for matching the thermal mass and stiffness of bolted split rings
EP2189630A1 (fr) * 2008-11-19 2010-05-26 Siemens Aktiengesellschaft Turbine à gaz, support d'aube directrice pour une telle turbine à gaz, et moteur à turbine à gaz avec une telle turbine à gaz
CH700679A1 (de) * 2009-03-17 2010-09-30 Alstom Technology Ltd Abstützung für eine turbine.
EP2423454A1 (fr) * 2010-08-25 2012-02-29 Siemens Aktiengesellschaft Boîtier pour une turbomachine et procédé de fabrication
US8342009B2 (en) 2011-05-10 2013-01-01 General Electric Company Method for determining steampath efficiency of a steam turbine section with internal leakage
US9279342B2 (en) 2012-11-21 2016-03-08 General Electric Company Turbine casing with service wedge
US9260281B2 (en) 2013-03-13 2016-02-16 General Electric Company Lift efficiency improvement mechanism for turbine casing service wedge
JP2016113992A (ja) * 2014-12-16 2016-06-23 三菱重工業株式会社 圧力容器およびタービン
CN114017134A (zh) * 2021-11-12 2022-02-08 中国航发沈阳发动机研究所 一种通过改变机匣热容调整机匣热变形速率的方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2034825A (en) * 1978-11-14 1980-06-11 Rolls Royce Casing for gas turbine engine
GB2035152B (en) * 1978-11-27 1982-08-11 United Technologies Corp Method of fabricating a split case for a gas turbine engine
US4551065A (en) * 1982-12-13 1985-11-05 Becker John H Composite horizontally or vertically split casing with variable casing ends
US4900222A (en) * 1988-12-23 1990-02-13 Rockwell International Corporation Rotary pump inlet velocity profile control device
DE19544011B4 (de) * 1995-11-27 2004-10-07 Alstom Strömungsmaschine
US5605438A (en) * 1995-12-29 1997-02-25 General Electric Co. Casing distortion control for rotating machinery
DE19806809C1 (de) * 1998-02-18 1999-03-25 Siemens Ag Turbinengehäuse

Also Published As

Publication number Publication date
CN1268833C (zh) 2006-08-09
JP2000213305A (ja) 2000-08-02
US6336789B1 (en) 2002-01-08
DE59909395D1 (de) 2004-06-09
EP1022439A1 (fr) 2000-07-26
CN1261643A (zh) 2000-08-02
RU2244835C2 (ru) 2005-01-20
JP4347977B2 (ja) 2009-10-21

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