Patent
Ceramic matrix composite component for a gas turbine engine
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
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Patent
Ceramic matrix composite turbine engine component
TL;DR: In this paper, a gas turbine component such as a ring seal segment or combustor heat shield having a base and a plurality of walls defining a volume is described, where the base and the walls are independently formed and are formed from ceramic matrix composite plates.
Patent
Impingement tubes for CMC seal segment cooling
TL;DR: In this paper, a turbine shroud adapted for use in a gas turbine engine includes a plurality of metallic carrier segments, and an impingement tube is used to direct cooling air onto the blade track segments.
Patent
Cooling arrangement for CMC components with thermally conductive layer
Jay A. Morrison,Jay E. Lane +1 more
TL;DR: In this article, a CMC wall is covered with a thermally conductive material to accelerate heat transfer in the plane of the CMC, and a back CMC surface is coated with a thin conductive layer.
Patent
Turbine engine shroud segment
TL;DR: In this article, a turbine engine shroud segment comprises a body including an outer surface away from which an integral attachment system projects, and each projection hook segment includes a segment support surface aligned circumferentially and radially with other segment support surfaces in a row.
Patent
Method and system for a ceramic matrix composite shroud hanger assembly
TL;DR: In this article, a shroud and hanger assembly for a gas turbine engine and a method of transferring load from a ceramic matrix composite (CMC) shroud to a CMC shroud hanger is presented.
References
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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.