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。

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.

公开(公告)号：US09765629B2

公开(公告)日：2017-09-19

申请号：US14031660

申请日：2013-09-19

Applicant: ALSTOM Technology Ltd

Inventor： Sascha Justl ,  Carlos Simon-Delgado ,  Axel Heidecke ,  Sven Olmes

IPC: F01D5/08 ,  F01D5/18 ,  F01D5/22 ,  F01D11/10

CPC classification number: F01D5/186 ,  F01D5/08 ,  F01D5/187 ,  F01D5/225 ,  F01D11/10

Abstract: A method and a cooling system for cooling blades of at least one blade row in a rotary flow machine includes an axial flow channel which is radially limited on the inside by a rotor unit and at the outside by at least one stationary component, the blades are arranged at the rotary unit and provide a shrouded blade tip facing radially to said stationary component. Pressurized cooling air is fed through from radially outside towards the tip of each of said blades in the at least one blade row, and the pressurized cooling air enters the blades through at least one opening at the shrouded blades' tip.

公开(公告)号：US20140086743A1

公开(公告)日：2014-03-27

申请号：US14031660

申请日：2013-09-19

Applicant: ALSTOM Technology Ltd

Inventor： Sascha JUSTL ,  Carlos Simon-Delgado ,  Axel Heidecke ,  Sven Olmes

IPC: F01D5/18

CPC classification number: F01D5/186 ,  F01D5/08 ,  F01D5/187 ,  F01D5/225 ,  F01D11/10

Abstract: A method and a cooling system for cooling blades of at least one blade row in a rotary flow machine includes an axial flow channel which is radially limited on the inside by a rotor unit and at the outside by at least one stationary component, the blades are arranged at the rotary unit and provide a shrouded blade tip facing radially to said stationary component. Pressurized cooling air is fed through from radially outside towards the tip of each of said blades in the at least one blade row, and the pressurized cooling air enters the blades through at least one opening at the shrouded blades' tip.

Abstract translation: 用于在旋转流动机械中至少一个叶片排的叶片的冷却方法和冷却系统包括轴向流动通道，该轴向流动通道由转子单元在内部径向限制，并且在外部由至少一个固定部件限定，叶片是 布置在所述旋转单元处并且提供面向所述静止部件的径向的被覆盖的叶片尖端。 加压冷却空气从至少一个叶片排中的径向外侧向每个所述叶片的顶端供给，并且加压冷却空气通过所覆盖的叶片尖端处的至少一个开口进入叶片。