公开(公告)号：US09765626B2

公开(公告)日：2017-09-19

申请号：US14661661

申请日：2015-03-18

Applicant: ALSTOM Technology Ltd

Inventor： Fabian Neubrand ,  Willy Heinz Hofmann

IPC: F01D5/16 ,  F01D5/14 ,  F01D5/18 ,  F01D9/02

CPC classification number: F01D5/141 ,  F01D5/148 ,  F01D5/16 ,  F01D5/186 ,  F01D5/187 ,  F01D9/02 ,  F05D2220/32 ,  F05D2250/70

Abstract: The invention refers to a gas turbine blade including an airfoil extending in radial direction from a blade root to a blade tip, defining a span ranging from 0% at the blade root to 100% at the blade tip, and extending in axial direction from a leading edge to a trailing edge, which limit a chord with an axial chord length defined by an axial length of a straight line connecting the leading edge and trailing edge of the airfoil depending on the span. The axial chord length increases at least from 80% span to 100% span.

公开(公告)号：US20130129498A1

公开(公告)日：2013-05-23

申请号：US13678676

申请日：2012-11-16

Applicant: ALSTOM Technology Ltd

Inventor： Willy Heinz Hofmann ,  Armin Busekros ,  Thomas Peter Sommer

IPC: F01D1/02

CPC classification number: F01D1/02 ,  F01D9/02 ,  F01D9/04 ,  F01D25/162 ,  F05D2260/601

Abstract: A diffuser for an axial flow machine has a transition from a ring channel having a first cross sectional area into an outlet space with a second, larger cross sectional area along a machine axis of the axial flow machine. The transition includes a plurality of steps.

Abstract translation: 用于轴向流动机的扩散器具有从具有第一横截面积的环形通道到沿轴向流动机器的机器轴线具有第二较大横截面积的出口空间的过渡。 该过渡包括多个步骤。

公开(公告)号：US20150016982A1

公开(公告)日：2015-01-15

申请号：US14498201

申请日：2014-09-26

Applicant: ALSTOM Technology Ltd

Inventor： Willy Heinz Hofmann ,  Philipp Schaefer

IPC: F01D25/30

CPC classification number: F01D25/30 ,  F01D9/02 ,  F01D25/28 ,  F02C7/20 ,  F02K1/04 ,  F05B2250/711 ,  F05B2250/712 ,  F05B2250/713 ,  F05D2240/90

Abstract: An exhaust diffuser for a gas turbine includes an annular duct. A row of struts is arranged in the duct. In a region downstream of the trailing edges of the struts, the cross-sectional area of the duct decreases to a local minimum and then increases again towards the outlet end of the duct. Thereby the gas flow is locally accelerated downstream of the struts. This stabilizes the boundary layer of the flow in this region and leads to a marked increase in pressure recovery for a wide range of operating conditions.

Abstract translation: 燃气轮机的排气扩散器包括环形管道。 一排支柱布置在管道中。 在支柱的后缘下游的区域中，管道的横截面面积减小到局部最小值，然后再次朝管道的出口端增加。 从而气流在支柱的下游局部加速。 这使得该区域中的流动的边界层稳定，并且在宽范围的操作条件下导致压力恢复的显着增加。