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公开(公告)号：US20140191476A1
公开(公告)日：2014-07-10
申请号：US14202571
申请日：2014-03-10
Applicant: ALSTOM Technology Ltd.
Inventor： Cyrille Bricaud , Ulrich Robert Steiger , Axel Heidecke , Carlos Simon-Delgado
IPC: F01D11/02
CPC classification number: F01D11/02 , F01D11/025 , F05D2300/50212 , F16J15/445 , F16J15/4472
Abstract: A labyrinth seal is provided for sealing the annular interspace between the rotor and the stator of a steam turbine or gas turbine. The labyrinth seal includes a multiplicity of sealing strips which are arranged in series in the axial direction and fastened on the stator and project into the interspace. The sealing strips interact, with sealing effect, with rotor-side sealing elements which are arranged in a staggered manner. An improved sealing effect is achieved by the sealing strips in the cold installed state being offset in relation to a symmetrical position, wherein the offset has the reverse direction and the same amount as the distance by which the sealing strip is displaced relative to adjacent rotor-side sealing elements as a result of thermal expansions of the stationary and rotating components and support structure when being heated from the cold installed state to a hot steady-state operating condition.
Abstract translation: 提供迷宫式密封件用于密封汽轮机或燃气轮机的转子和定子之间的环形间隙。 迷宫式密封件包括多个密封条，其沿轴向串联设置并固定在定子上并投入到间隙中。 密封条与密封效应相互作用，转子侧密封元件以交错方式布置。 通过在冷安装状态下的密封条相对于对称位置偏移来实现改进的密封效果，其中所述偏移具有与密封条相对于相邻转子相对位移的距离相反的方向和相同的量， 由于固定和旋转的部件和支撑结构在从冷的安装状态被加热到热的稳态操作状态时的热膨胀的结果导致侧面密封元件。
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公开(公告)号：US09822656B2
公开(公告)日：2017-11-21
申请号：US14728003
申请日：2015-06-02
Applicant: ALSTOM Technology Ltd
Inventor： Cyrille Bricaud , Carlos Simon-Delgado , Steffen Holzhaeuser , Marco Lamminger , Carl Berger
CPC classification number: F01D11/006 , F01D5/02 , F01D5/30 , F01D5/3007 , F01D5/3015 , F01D5/326 , F01D11/005 , F05D2200/263 , F05D2220/32 , F05D2240/55 , F05D2250/192 , F05D2250/38 , F05D2300/10 , F05D2300/43 , F05D2300/44
Abstract: The present invention relates to a rotor assembly for a rotary machine such as a gas turbine. The present solution provides a sealing wire located inside a groove engraved in the rotor body. The sealing wire is responsive to radial centrifugal forces acting during normal operation of the machine, and moves radially in the groove until a sealing configuration is achieved such to prevent damaging hot leakage towards machine components.
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公开(公告)号：US09650907B2
公开(公告)日：2017-05-16
申请号：US14202571
申请日：2014-03-10
Applicant: ALSTOM Technology Ltd
Inventor： Cyrille Bricaud , Ulrich Robert Steiger , Axel Heidecke , Carlos Simon-Delgado
IPC: F01D11/02 , F16J15/44 , F16J15/447
CPC classification number: F01D11/02 , F01D11/025 , F05D2300/50212 , F16J15/445 , F16J15/4472
Abstract: A labyrinth seal is provided for sealing the annular interspace between the rotor and the stator of a steam turbine or gas turbine. The labyrinth seal includes a multiplicity of sealing strips which are arranged in series in the axial direction and fastened on the stator and project into the interspace. The sealing strips interact, with sealing effect, with rotor-side sealing elements which are arranged in a staggered manner. An improved sealing effect is achieved by the sealing strips in the cold installed state being offset in relation to a symmetrical position, wherein the offset has the reverse direction and the same amount as the distance by which the sealing strip is displaced relative to adjacent rotor-side sealing elements as a result of thermal expansions of the stationary and rotating components and support structure when being heated from the cold installed state to a hot steady-state operating condition.
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