Gas turbine engine component having engineered vascular structure
US-2018347373-A1 · Dec 6, 2018 · US
Adaptive cover for cooling pathway by additive manufacture
US10927680B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10927680-B2 |
| Application number | US-201715609562-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 31, 2017 |
| Priority date | May 31, 2017 |
| Publication date | Feb 23, 2021 |
| Grant date | Feb 23, 2021 |
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- Title
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Abstract
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A hot gas path component of an industrial machine includes an adaptive cover for a cooling pathway. The component and adaptive cover are made by additive manufacturing. The component includes an outer surface exposed to a working fluid having a high temperature; a thermal barrier coating over the outer surface; an internal cooling circuit; and a cooling pathway in communication with the internal cooling circuit and extending towards the outer surface. The adaptive cover is positioned in the cooling pathway at the outer surface. The adaptive cover includes a heat transfer enhancing surface at the outer surface causing the adaptive cover to absorb heat faster than the outer surface, e.g., when a spall in a thermal barrier coating thereover occurs.
First claim
Opening claim text (preview).
What is claimed is: 1. A component for use in a hot gas path of an industrial machine, the component comprising: an outer surface exposed to a working fluid having a high temperature; a thermal barrier coating (TBC) over the outer surface; an internal cooling circuit; a cooling pathway in communication with the internal cooling circuit and extending towards the outer surface, wherein the cooling pathway is at a non-orthogonal angle relative to both the outer surface and the internal cooling circuit; an adaptive cover in the cooling pathway at the outer surface, the adaptive cover configured to, in response to a spall in the TBC occurring over the cooling pathway and the high temperature reaching or exceeding a predetermined temperature of the adaptive cover, open the cooling pathway, wherein the adaptive cover includes a weakened region at a terminal end of the cooling pathway extending to the outer surface, wherein the weakened region is weakened by grooves therein, wherein the adaptive cover includes a heat transfer enhancing surface at the outer surface causing the adaptive cover to absorb heat faster than the outer surface, wherein the heat transfer enhancing surface is located radially outside the weakened region with respect to the terminal end of the cooling pathway extending to the outer surface, and wherein the component is additively manufactured such that the adaptive cover is integrally formed with the outer surface and the cooling pathway. 2. The component of claim 1 , wherein the heat transfer enhancing surface includes at least one of: a dimpled surface, a bulged surface and a striped surface. 3. The component of claim 1 , wherein the heat transfer enhancing surface is less smooth than the outer surface. 4. The component of claim 1 , wherein the cooling pathway and the adaptive cover have a non-round cross-section at the outer surface. 5. A component for use in a hot gas path of an industrial machine, the component comprising: an outer surface exposed to a working fluid having a high temperature; a thermal barrier coating (TBC) over the outer surface; an internal cooling circuit; a cooling pathway in communication with the internal cooling circuit and extending towards the outer surface, wherein the cooling pathway is at a non-orthogonal angle relative to both the outer surface and the internal cooling circuit; and an adaptive cover in the cooling pathway at the outer surface, the adaptive cover configured to, in response to a spall in the TBC occurring over the cooling pathway and the high temperature reaching or exceeding a predetermined temperature of the adaptive cover, open the cooling pathway, wherein the adaptive cover includes a weakened region at a terminal end of the cooling pathway extending to the outer surface, wherein the weakened region is weakened by grooves therein, wherein the adaptive cover includes a heat transfer enhancing surface at the outer surface causing the adaptive cover to absorb heat faster than the outer surface, wherein the heat transfer enhancing surface is located radially outside the weakened region with respect to the terminal end of the cooling pathway extending to the outer surface. 6. The component of claim 5 , wherein the heat transfer enhancing surface includes at least one of: a dimpled surface, a bulged surface and a striped surface. 7. The component of claim 5 , wherein the heat transfer enhancing surface is less smooth than the outer surface. 8. The component of claim 5 , wherein the cooling pathway and the adaptive cover have a non-round cross-section at the outer surface.
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- What does patent US10927680B2 cover?
- A hot gas path component of an industrial machine includes an adaptive cover for a cooling pathway. The component and adaptive cover are made by additive manufacturing. The component includes an outer surface exposed to a working fluid having a high temperature; a thermal barrier coating over the outer surface; an internal cooling circuit; and a cooling pathway in communication with the interna…
- Who is the assignee on this patent?
- Gen Electric
- What technology area does this patent fall under?
- Primary CPC classification F01D5/187. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Feb 23 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 7 related publications on this page (citations in our corpus or others sharing the same primary CPC).