Unlock instant, AI-driven research and patent intelligence for your innovation.

Stator member with segmented inner ring for turbine

A technology for inner rings and turbines, applied to stators, engine components, mechanical equipment, etc., can solve problems such as thermal expansion, and achieve the effect of reducing blade tip loss

Active Publication Date: 2016-12-28
ANSALDO ENERGIA IP UK LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is also an object of the invention to provide a construction and arrangement of sub-segments in which the problems of thermal expansion and compressive stresses can be solved in a simple manner

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Stator member with segmented inner ring for turbine
  • Stator member with segmented inner ring for turbine
  • Stator member with segmented inner ring for turbine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0051] figure 1 A schematic diagram is shown of a metal ring 10 formed as a ring in the region of an individual sub-element 20 (also referred to as a sub-segment) as part of the stator. In this context, this outer ring 10 can be segmented 11 one or more times in order to better integrate the sub-elements 20 assembled into a ring. The outer rings 10 connected together are also not excluded per se. However, this requires care to ensure that the subsection 20 fits when the last subsection is inserted. In principle, the outer ring 10 consists of a metallic material, while the partial segment 20 consists at least partially of a ceramic material. The outer rings 10 may be configured in the axial direction of the stator such that they are only in operative connection with the rotor blade rows.

[0052] When just installed, the compressive stresses of the sub-segments relative to each other are preferably limited to a maximum of 50 MPa, which on the one hand results in a perfect fi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
compressive stressaaaaaaaaaa
Login to View More

Abstract

The stator component of the turbomachine basically consists of at least one axially extending outer ring (10) which serves as a frame for an inner ring made up of sub-segments (20). The sub-segments are arranged relative to each other such that on the rotor side their rotational movement relative to the rotor blade (30) forms a connected circular circumferential surface. The individual sub-segments (20) consist of a homogeneously structured material, or at least in the radial direction, of a plurality of sub-bodies constructed of different materials, such as for example ceramics, wherein the thus formed sub-segments depend on the load of the turbine The range exhibits predetermined stress and / or expansion characteristics.

Description

technical field [0001] The invention relates to stator components for turbomachines. Background technique [0002] Turbine casings for combustors formed substantially by hot gas ducts through which hot working gases flow are known in the prior art. Due to such operation, a cladding made of a heat-resistant material is preferably provided on the inner wall surface of this hot gas duct in order to prevent the remaining metal surfaces of the housing from coming into direct contact with the hot working gas. This thermal protection cladding is conventionally formed from a plurality of sub-segments, which are arranged in the circumferential direction on the inner surface of the turbine housing so that they themselves form a ring. In order to avoid problems with thermal expansion at high temperatures, the respective sub-segments are spaced apart from each other in the circumferential direction. [0003] The turbine housing known from EP 1 225 308 B1 consists of a segmented ring w...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F01D11/08F01D9/04F01D25/24
CPCF05D2300/21F01D9/04F01D11/08F01D25/246F01D11/18F05D2300/50212F05D2300/2112F05D2240/11F05D2300/2118F01D11/122F05D2240/55F05D2260/30F05D2300/20
Inventor H.布兰德H-P.博斯曼恩
Owner ANSALDO ENERGIA IP UK LTD