Impeller shroud for a compressor
US-2017314572-A1 · Nov 2, 2017 · US
Gas turbine engine with geopolymer seal element
US10794221B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10794221-B2 |
| Application number | US-201715496862-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 25, 2017 |
| Priority date | Apr 25, 2017 |
| Publication date | Oct 6, 2020 |
| Grant date | Oct 6, 2020 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A gas turbine engine includes a rotatable component and a non-rotatable component. A seal is carried on one of the rotatable component or the non-rotatable component to provide sealing there between. The seal includes a geopolymer seal element.
First claim
Opening claim text (preview).
What is claimed is: 1. A gas turbine engine comprising: a rotatable component and a non-rotatable component; a seal carried on one of the rotatable component or the non-rotatable component to provide sealing there between, the seal including a geopolymer seal element that is an inorganic material that has a covalently bonded, amorphous network produced by condensation of tetrahedral aluminosilicate units, with alkali metal ions balancing the charge associated with tetrahedral aluminum. 2. The gas turbine engine as recited in claim 1 , wherein the geopolymer seal element includes at least one of cesium and potassium. 3. The gas turbine engine as recited in claim 1 , wherein the geopolymer seal element includes cesium and potassium. 4. The gas turbine engine as recited in claim 3 , wherein the geopolymer seal element includes, by weight, a greater amount of the cesium. 5. The gas turbine engine as recited in claim 3 , wherein the geopolymer seal element includes, by weight, greater than two times more cesium than potassium. 6. The gas turbine engine as recited in claim 1 , wherein the geopolymer seal element includes reinforcement dispersed there through. 7. The gas turbine engine as recited in claim 6 , wherein the reinforcement includes at least one of silicon carbide fibers or carbon fibers. 8. The gas turbine engine as recited in claim 7 , wherein the geopolymer seal element includes, by volume, 30% to 70% of the silicon carbide fibers or the carbon fibers. 9. The gas turbine engine as recited in claim 8 , wherein the geopolymer seal element includes at least one of cesium and potassium. 10. The gas turbine engine as recited in claim 9 , wherein the seal includes a nickel alloy support attached to the geopolymer seal element. 11. The gas turbine engine as recited in claim 10 , wherein the geopolymer seal element is a coating layer on the nickel alloy support. 12. The gas turbine engine as recited in claim 6 , wherein the reinforcement is metal particles. 13. The gas turbine engine as recited in claim 12 , wherein the metal particles are nickel-based. 14. The gas turbine engine as recited in claim 12 , wherein the metal particles include a base metal selected from the group consisting of aluminum, titanium, and iron. 15. The gas turbine engine as recited in claim 6 , wherein the reinforcement is abrasive particles. 16. The gas turbine engine as recited in claim 6 , wherein the reinforcement is microballoons. 17. The gas turbine engine as recited in claim 1 , wherein the geopolymer includes at least one element selected from the group consisting of lithium, sodium, potassium, rubidium, cesium, and combinations thereof. 18. The gas turbine engine as recited in claim 17 , wherein the geopolymer includes at least two of the elements. 19. The gas turbine engine as recited in claim 18 , wherein one of the two elements is cesium. 20. The gas turbine engine as recited in claim 1 , wherein the geopolymer seal element includes potassium.
Assignees
Inventors
Classifications
containing mineral polymers, e.g. geopolymers of the Davidovits type · CPC title
Seals · CPC title
- C09K3/1003Primary
Pure inorganic mixtures · CPC title
- F01D25/005Primary
Selecting particular materials · CPC title
Amorphous · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US10794221B2 cover?
- A gas turbine engine includes a rotatable component and a non-rotatable component. A seal is carried on one of the rotatable component or the non-rotatable component to provide sealing there between. The seal includes a geopolymer seal element.
- Who is the assignee on this patent?
- United Technologies Corp
- What technology area does this patent fall under?
- Primary CPC classification C09K3/1003. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Oct 06 2020 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).