Patent
Ceramic matrix composite component for a gas turbine engine
Reads0
Chats0
TLDR
In this article, the gap between the CMC member and the support member is kept purposefully small to limit the stress developed in the material when it is deflected against the support by the force of a rubbing blade tip.Abstract:
A ceramic matrix composite (CMC) component for a combustion turbine engine ( 10 ). A blade shroud assembly ( 30 ) may be formed to include a CMC member ( 32 ) supported from a metal support member ( 32 ). The CMC member includes arcuate portions ( 50, 52 ) shaped to surround extending portions ( 46, 48 ) of the support member to insulate the metal support member from hot combustion gas ( 16 ). The use of a low thermal conductivity CMC material allows the metal support member to be in direct contact with the CMC material. The gap ( 42 ) between the CMC member and the support member is kept purposefully small to limit the stress developed in the CMC member when it is deflected against the support member by the force of a rubbing blade tip ( 14 ). Changes in the gap dimension resulting from differential thermal growth may be regulated by selecting an angle (A) of a tapered slot ( 76 ) defined by the arcuate portion.read more
Citations
More filters
Patent
Mounting apparatus for low-ductility turbine shroud
Jason David Shapiro,Roger Lee Doughty,Aaron Michael Dziech,Victor Hugo Silva Correia,Lampes Elias Harry,Robert Carella,Brian Kenneth Corsetti +6 more
TL;DR: In this article, an annular support member (14), a turbine shroud (12), and a spring (32) are arranged between the support member and the turbine shroud to push the shroud to a concentric position within the support members.
Patent
Rotor seal segment
TL;DR: In this article, the authors describe a hollow section that defines an inlet (44) and an outlet (64, 66) for the passage of coolant through a turbine rotor.
Patent
Turbine ring assembly
Franck Roger Denis Denece,Alain Dominique Gendraud,Georges Habarou,Hubert Illand,Damien Bonneau +4 more
TL;DR: A turbine ring assembly includes a ring support structure and a plurality of ring sectors, each including a single piece of ceramic matrix composite material as discussed by the authors, each of which includes a first portion forming an annular base with an inside face defining the inside face of the turbine ring and an outside face from which there extends two tab-forming portions including ends that are engaged in housings in the ring structure.
Patent
Blade clearance control using high-CTE and low-CTE ring members
TL;DR: In this article, an engine has a blade stage (10) and a circumferential array of blade outer air seal segments (66), and a support ring (70) carries the blade outer-air-seal segments.
Patent
Ceramic matrix composite attachment apparatus and method
TL;DR: An attachment method and flange for connecting a ceramic matrix composite (CMC) component, such as a gas turbine shroud ring ( 36, 68 ), to a metal support structure was proposed in this paper.
References
More filters
Patent
Use of high temperature insulation for ceramic matrix composites in gas turbines
TL;DR: In this article, a ceramic composition for insulating components, made of ceramic matrix composites, of gas turbines is provided, which comprises a plurality of hollow oxide-based spheres of various dimensions, a phosphate binder, and at least one oxide filler powder, whereby the binder partially fills gaps between the spheres and the filler powders.
Patent
Turbine ring for a gas turbine engine
TL;DR: A turbine ring has an annular metallic carrier which is mounted within the inside of the turbine casing and within the carrier there is provided a ceramic abradable ring as mentioned in this paper, and a cooling air circuit is provided to regulate the temperature of only the annular carrier such that the latter always exerts a centripetal compression force on the ring under all operational conditions of the gas turbine.
Patent
Turbine ring incorporating elements of a ceramic composition divided into sectors
TL;DR: In this paper, a turbine ring comprises an annular support in two parts and a ring of ceramic sectors for sealing purposes, which are interconnected by an axial groove and a sliding male part.
Patent
Ceramic faced outer air seal for gas turbine engines
Eaton Harry Edwin,Richard Novak +1 more
TL;DR: In this article, the ceramic facing material of an outer air seal (30) at the leading edge region (36) is densified by a plasma gun to produce a glazed area (52) which is resistant to erosion.
Patent
Turbine blade shroud assembly
TL;DR: In this paper, a turbine blade shroud assembly for a gas turbine engine includes a metal substrate ring on the engine, a continous ceramic barrier ring inside the substrate ring and exposed to hot gas in a hot gas flow path of the engine and a wire mesh compliant ring between the barrier and substrate rings.