公开(公告)号：US09803483B2

公开(公告)日：2017-10-31

申请号：US14925059

申请日：2015-10-28

Applicant: ALSTOM Technology Ltd

Inventor： Rolf Hunziker ,  Krzysztof Cherek ,  Sigurd Kubel

IPC: F01D5/28 ,  F01D5/14

CPC classification number: F01D5/28 ,  F01D5/147 ,  F01D5/282 ,  F01D5/286 ,  F05D2250/38

Abstract: The invention relates to sheath for a blade that has a uniform assembly direction over the radial height of the sheath whether the blade has a straight or curved trajectory. This is achieved by the a sheath formed around the edge, having a first inner surface wherein a first tangential vector projected tangentially to the first inner surface in a direction away from the head portion in an longitudinal plain forms a first angle with the rotational axis that does not vary over the radial height of the sheath while a second tangential vector projected tangentially from any point of the second inner surface of the sheath in a direction towards the head portion intersects the first tangential vector.

公开(公告)号：US09328612B2

公开(公告)日：2016-05-03

申请号：US13631882

申请日：2012-09-29

Applicant: ALSTOM TECHNOLOGY LTD.

Inventor： Sigurd Kubel ,  Rolf Hunziker

IPC: F01D5/30 ,  B23P6/00 ,  F01D5/00 ,  F01D5/28

CPC classification number: F01D5/005 ,  B23P6/005 ,  F01D5/282 ,  F01D5/3007 ,  Y02T50/672 ,  Y10T29/49318

Abstract: A method of replacing rotating metal blades of a steam turbine inserted into a rotor having one or more existing grooves for inserting root sections of the metal blades is described, the method including the steps of providing replacement blades having radially inwards directed root sections of fiber-reinforced composite material, changing the shape of the one or more grooves in the rotor to form a cavity for the insertion of the root sections of fiber-reinforced composite material and inserting the replacement blades into the rotor.

Abstract translation: 描述了一种替代插入转子的旋转金属叶片的方法，所述旋转金属叶片具有用于插入金属叶片根部的一个或多个现有凹槽，该方法包括以下步骤：提供具有径向向内定向的纤维 - 改变转子中的一个或多个槽的形状，以形成用于插入纤维增强复合材料的根部的空腔并将替换叶片插入转子中。