CN1034829C - 带有鼓形转子的蒸汽涡轮机 - Google Patents

带有鼓形转子的蒸汽涡轮机 Download PDF

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Publication number
CN1034829C
CN1034829C CN93100169A CN93100169A CN1034829C CN 1034829 C CN1034829 C CN 1034829C CN 93100169 A CN93100169 A CN 93100169A CN 93100169 A CN93100169 A CN 93100169A CN 1034829 C CN1034829 C CN 1034829C
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China
Prior art keywords
steam turbine
rotor
blade
root
impulse steam
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Expired - Fee Related
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CN93100169A
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English (en)
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CN1080017A (zh
Inventor
让·皮埃尔·格罗
纪尧姆·维尔歇夫
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ALSTHOM Co Ltd
Alstom Holdings SA
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ALSTHOM Co Ltd
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Priority claimed from FR9200948A external-priority patent/FR2686650B1/fr
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Publication of CN1080017A publication Critical patent/CN1080017A/zh
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/30Fixing blades to rotors; Blade roots ; Blade spacers
    • F01D5/3007Fixing blades to rotors; Blade roots ; Blade spacers of axial insertion type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D11/00Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/08Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
    • F01D11/12Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator using a rubstrip, e.g. erodible. deformable or resiliently-biased part
    • F01D11/122Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator using a rubstrip, e.g. erodible. deformable or resiliently-biased part with erodable or abradable material
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/02Blade-carrying members, e.g. rotors
    • F01D5/06Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)

Abstract

一种用于推力蒸汽涡轮机的鼓形转子,带有由叶片构成的动轮,叶片的根部带有扩大部分并被锁定在形成于转子上的槽内,转子的特征在于槽(7)在转子(6)的至少一部分上是纵向的,并且一动轮(10)之叶片(9)的根部(8)与相邻动轮(10)之叶片(9)的根部(8)由隔离件(2)隔开。

Description

带有鼓形转子的蒸汽涡轮机
本发明涉及一种带有鼓形转子的蒸汽涡轮机,在转子上安装有带根部的叶片,根部带有扩大部分,用来进行固定并被容纳于形成在转子上的槽内。法国专利申请FR—A—9104855描述了这种鼓形转子,在该申请中,槽是圆周向的。
为了安装这些叶片,必需在槽中转动它们根部,这样槽的宽度就大于叶片的宽度。
此外,由于槽以一个无用空处(等于允许一叶片根部转动所需的间隙)结束,所以槽的填充远不是最佳的。然后必需用窄的楔片充填该空处,但不能满意地夹紧。
此外,在顶盖之间存在周向间隙,不存在连续的连接。
本发明的目的是提供一种克服上述问题的蒸汽涡轮机。
为了实现上述目的,本发明提供了一种带有鼓形转子的蒸汽涡轮机,带有由叶片构成的动轮,叶片的根部带有扩大部分并被锁定在形成于转子上的槽内,其中,槽在转子的至少一部分上是纵向的,并且一动轮之叶片的根部与相邻动轮之叶片的根部由隔离件隔开。
因此在本发明的蒸汽涡轮机中,避免了叶片转动的问题,并且槽的充填是最佳的。
面对隔板之轮毂的隔离件可设有传统的固定肋,它们按传统方式以间隙进行工作,或者可设有耐磨垫,它们粘接并以减小的间隙工作。
下面参照附图示出的并且以非限定例子给出的特殊实施例详细描述本发明。
图1示出了FR—A—9104855之转子的一部分。
图2示出了安装了叶片的图1所示之转子。
图3是一通过本发明之转子和涡轮机的局部纵剖视图。
图4是一剖视图,它与图3所示涡轮机之隔板的轴线垂直。
图5是一垂直于图3转子之动轮的轴线的剖视图。
图1示出了FR—A—9104855之鼓形转子的一部分,其上设有一倒T形圆周槽1。将一叶片3的T形根部2插入槽1,然后转动叶片。一旦所有的叶片3就位,插入楔片4,楔片4的剖面与叶片根部2相同,但薄得多。最后的楔片4在垂直方向上被分成两个以使它们能够插入,最后一个楔片被分成三个。
槽1的宽度大于根部2的宽度。
此外,用楔片4充填底部缝隙的必要使得采用连续连接的组件(叶片3的顶盖5仅扭转很小的量)成为可能。一般来说,周向间隙l仍存在于顶盖5之间,特别是当产生了离心和热伸张之后转动时(见图2)。
根据本发明的叶片安装示于图3至5中。
转子6带有纵向槽7(即平行于转子的轴线),其为倒T形的形式并与叶片9的根部8精确地互补,叶片9带有构成T形之横杆的扩大部10。
也有可能设置一种用于圣诞树之立杆形式的扩大部10。
由于叶片9的根部8是轴向地滑入槽7,所以在槽内没有必要为根部提供间隙。事实上,每个轮都是通过轴向滑动作为一整体安装的,并以其自身夹紧在转子上而完成。
在一给定的动轮10中叶片9的根部8在槽7上方被连接在一起,并且在单一一个轮10中顶盖11可安装成相互接触。
在两个叶片9的动轮10之间,滑动安装有隔离件12,其形状与每个槽7内的叶片9之根部8相同。隔离件12可以是独立的,或可以以三个,四个或五个一组组合在一起。
这些隔离件或隔离件组12在槽7上方相互接触。
在第一实施例中,隔离件12带有密封肋13,它们有间隔地分布并面对构成定轮之隔板15的轮毂14。隔板15最好是一个零件,即在水平连接处无任何径向分离,并在安装动轮10的同时将它们螺纹连接在转子上,将隔板15安装在连续动轮对10之间。成一件的隔板15是无向性的,所以其厚度可减小。
在第二实施例中,隔离件12在其外表面上设置有胶粘的耐磨垫16,它们以很小的间隙分布,并且在构成隔板15的定轮之轮毂14上机加工有刮扫件17,从而改善了防漏效果。应当知道通过采用一鼓形转子(小基部尺寸)已大大减小了泄漏。
这些隔离件12为转子6提供了热绝缘。
此外,在固定有隔板15的定子部分18产生变形的情况下,在隔板15和转子6之间可能会产生接触。如果产生这种接触,上述组装方法保护了转子,从而避免了其变形。
纵向槽7只需占据转子6的一部分,其余部分带有周向槽。根据本发明的转子在各动轮中必需带有相同数量的叶片9,这意味着本发明特别适用于HP转子,这种转子在所有动轮中通常带有相同数量的叶片。

Claims (5)

1.一种带有鼓形转子的蒸汽涡轮机,带有由叶片构成的动轮,叶片的根部带有扩大部分并被锁定在形成于转子上的槽内,其特征在于,槽(7)在转子(6)的至少一部分上是纵向的,并且一动轮(10)的叶片(9)的根部(8)与相邻动轮(10)的叶片(9)的根部(8)由隔离件(12)隔开。
2.根据权利要求1所述的带有鼓形转子的蒸汽涡轮机,其特征在于,动轮(10)由固定在涡轮机定子(18)上的隔板(15)分隔,涡轮机的特征在于隔离件(12)由数件构成,它们的断面与叶片(9)的根部(8)相同并面对隔板(15)的轮毂(14),所述件是独立的或被连接成组。
3.根据权利要求2所述的带有鼓形转子的蒸汽涡轮机,其特征在于,每个隔离件(12)包括用于密封目的的肋。
4.根据权利要求2所述的带有鼓形转子的蒸汽涡轮机,其特征在于,隔离件(12)带有耐磨垫(16),并且隔板(15)的轮毂(14)支承有肋(17)。
5.根据权利要求2至4中任一项所述的带有鼓形转子的蒸汽涡轮机,其特征在于,隔板(15)是一个零件。
CN93100169A 1992-01-08 1993-01-06 带有鼓形转子的蒸汽涡轮机 Expired - Fee Related CN1034829C (zh)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR9200122 1992-01-08
FR9200122 1992-01-08
FR9200948 1992-01-29
FR9200948A FR2686650B1 (fr) 1992-01-29 1992-01-29 Rotor tambour pour turbine a vapeur a action avec montage des ailettes dans des rainures longitudinales et turbine a vapeur a action comportant un tel rotor.

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CN1080017A CN1080017A (zh) 1993-12-29
CN1034829C true CN1034829C (zh) 1997-05-07

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US (1) US5308227A (zh)
EP (1) EP0551229B1 (zh)
JP (1) JP3297112B2 (zh)
CN (1) CN1034829C (zh)
AT (1) ATE145709T1 (zh)
CZ (1) CZ406592A3 (zh)
DE (1) DE69306130T2 (zh)
DK (1) DK0551229T3 (zh)
ES (1) ES2093936T3 (zh)
GR (1) GR3022290T3 (zh)
MX (1) MX9300032A (zh)

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JPH11343807A (ja) * 1998-06-01 1999-12-14 Mitsubishi Heavy Ind Ltd 蒸気タービンの連結静翼
DE10356586A1 (de) * 2003-12-04 2005-07-07 Alstom Technology Ltd Verdichterrotor
GB0416932D0 (en) * 2004-07-29 2004-09-01 Alstom Technology Ltd Axial flow steam turbine assembly
GB0416931D0 (en) * 2004-07-29 2004-09-01 Alstom Technology Ltd Axial flow steam turbine assembly
EP2045444B1 (de) * 2007-10-01 2015-11-18 Alstom Technology Ltd Laufschaufel, Verfahren zur Herstellung einer Laufschaufel, sowie Verdichter mit einer solchen Laufschaufel
DE102008060706A1 (de) * 2008-12-05 2010-06-10 Man Turbo Ag Düsensegment für eine Dampfturbine
US8277191B2 (en) * 2009-02-25 2012-10-02 General Electric Company Apparatus for bucket cover plate retention
US8517688B2 (en) 2010-09-21 2013-08-27 General Electric Company Rotor assembly for use in turbine engines and methods for assembling same
US8834114B2 (en) 2011-09-29 2014-09-16 General Electric Company Turbine drum rotor retrofit
US9109456B2 (en) 2011-10-26 2015-08-18 General Electric Company System for coupling a segment to a rotor of a turbomachine
US8992168B2 (en) * 2011-10-28 2015-03-31 United Technologies Corporation Rotating vane seal with cooling air passages
US9194259B2 (en) 2012-05-31 2015-11-24 General Electric Company Apparatus for minimizing solid particle erosion in steam turbines
US9598969B2 (en) * 2012-07-20 2017-03-21 Kabushiki Kaisha Toshiba Turbine, manufacturing method thereof, and power generating system
US9194244B2 (en) * 2013-02-25 2015-11-24 General Electric Company Drum rotor dovetail component and related drum rotor system
US10883373B2 (en) * 2017-03-02 2021-01-05 Rolls-Royce Corporation Blade tip seal

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FR2661944B1 (fr) * 1990-05-14 1994-06-10 Alsthom Gec Etage de turbomachine avec pertes secondaires reduites.

Also Published As

Publication number Publication date
EP0551229A1 (fr) 1993-07-14
ES2093936T3 (es) 1997-01-01
DK0551229T3 (da) 1997-03-17
CN1080017A (zh) 1993-12-29
JPH05248205A (ja) 1993-09-24
DE69306130T2 (de) 1997-03-27
CZ406592A3 (en) 1993-08-11
DE69306130D1 (de) 1997-01-09
GR3022290T3 (en) 1997-04-30
JP3297112B2 (ja) 2002-07-02
EP0551229B1 (fr) 1996-11-27
US5308227A (en) 1994-05-03
MX9300032A (es) 1993-11-01
ATE145709T1 (de) 1996-12-15

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