System and method for purging a fuel manifold of a gas turbine engine using a pump
US-11486303-B2 · Nov 1, 2022 · US
System and method for purging a fuel manifold of a gas turbine engine through a flow divider valve
US12180895B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12180895-B2 |
| Application number | US-202318216954-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 30, 2023 |
| Priority date | May 15, 2019 |
| Publication date | Dec 31, 2024 |
| Grant date | Dec 31, 2024 |
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- Title
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Abstract
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Methods and systems of operating a gas turbine engine in a low-power condition are provided. In one embodiment, the method includes supplying fuel to a combustor by supplying fuel to a first fuel manifold and a second fuel manifold of the gas turbine engine. The method also includes, while supplying fuel to the combustor by supplying fuel to the first fuel manifold: stopping supplying fuel to the second fuel manifold; and supplying pressurized air to the second fuel manifold to flush fuel in the second fuel manifold into the combustor and hinder coking in the second fuel manifold and associated fuel nozzles.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of operating a gas turbine engine, the method comprising: supplying fuel to a combustor of the gas turbine engine by supplying fuel to a first fuel manifold and to a second fuel manifold in fluid communication with the combustor; while supplying fuel to the combustor by supplying fuel to the first fuel manifold: stopping supplying fuel to the second fuel manifold; flushing fuel in the second fuel manifold into the combustor by: supplying compressed air to the second fuel manifold; and maintaining a fuel flow rate to the combustor via the second fuel manifold below a threshold by regulating the compressed air supplied to the second fuel manifold; and stopping supplying compressed air to the second fuel manifold after flushing fuel in the second fuel manifold into the combustor; and after flushing fuel in the second fuel manifold into the combustor, supplying fuel to the combustor by supplying fuel to the first fuel manifold while supplying fuel to the second fuel manifold is stopped and while supplying compressed air to the second fuel manifold is stopped. 2. The method of claim 1 , wherein flushing fuel in the second fuel manifold into the combustor includes, after stopping supplying fuel to the second fuel manifold, opening a purge valve to initiate the flushing of the fuel in the second fuel manifold into the combustor.
Assignees
Inventors
Classifications
- F02C7/232Primary
Fuel valves {(control of fuel supply by means of fuel metering valves F02C9/263)}; Draining valves or systems (valves in general F16K) · CPC title
Dividing fuel between various burners · CPC title
specially adapted for the control of two or more plants simultaneously · CPC title
characterised by throttling of fuel (F02C9/38 takes precedence) · CPC title
Fuel delivery systems comprising two or more pumps · CPC title
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- What does patent US12180895B2 cover?
- Methods and systems of operating a gas turbine engine in a low-power condition are provided. In one embodiment, the method includes supplying fuel to a combustor by supplying fuel to a first fuel manifold and a second fuel manifold of the gas turbine engine. The method also includes, while supplying fuel to the combustor by supplying fuel to the first fuel manifold: stopping supplying fuel to t…
- Who is the assignee on this patent?
- Pratt & Whitney Canada
- What technology area does this patent fall under?
- Primary CPC classification F02C7/232. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Dec 31 2024 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 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).