Methods of cleaning a component within a turbine engine

Patent metadata

Field	Value
Publication number	US-11649735-B2
Application number	US-202017010309-A
Country	US
Kind code	B2
Filing date	Sep 2, 2020
Priority date	Apr 26, 2017
Publication date	May 16, 2023
Grant date	May 16, 2023

Abstract

A method of cleaning a component within a turbine that includes disassembling the turbine engine to provide a flow path to an interior passageway of the component from an access point. The component has coked hydrocarbons formed thereon. The method further includes discharging a flow of cleaning solution towards the interior passageway from the access point, wherein the cleaning solution is configured to remove the coked hydrocarbons from the component.

First claim

What is claimed is:

1. A method of cleaning a component within a turbine engine, said method comprising:
disassembling the turbine engine without detaching the turbine engine from an airframe to provide a flow path to an interior passageway of the component from an access point in the turbine engine, wherein the component has coked hydrocarbons formed thereon, wherein disassembling the turbine engine comprises disassembling a fan assembly of the turbine engine to define a first open end of a fan midshaft of the turbine engine, wherein the first open end defines the access point,
filling a volume of the interior passageway with an amount of cleaning solution, wherein the cleaning solution is configured to remove the coked hydrocarbons form the component; and
holding the amount of cleaning solution within the interior passageway for a predetermined residence time.

2. The method in accordance with claim 1 , wherein the fan midshaft includes a second open end, said method further comprising sealing the second open end prior to discharging the flow of cleaning solution towards the interior passageway.

3. The method in accordance with claim 2 , wherein sealing the second open end comprises: positioning a plug within the interior passageway of the component proximate the second open end, wherein the plug is insertable through the first open end of the fan midshaft when in a first operational mode; and actuating the plug into a second operational mode from the first operational mode, wherein the plug is configured to seal the second open end when in the second operational mode.

4. The method in accordance with claim 1 , wherein filling the volume of the interior passageway comprises filling the volume with the cleaning solution including a foaming agent.

5. The method in accordance with claim 1 , wherein holding the amount of cleaning solution comprises holding the amount of cleaning solution for the predetermined residence time defined within a range between about 30 minutes and about 8 hours.

6. The method in accordance with claim 1 , wherein the cleaning solution includes at least one of citric acid or glycolic acid.

7. The method in accordance with claim 6 , wherein disassembling the turbine engine further comprises disassembling the turbine to provide access to a fuel nozzle of the turbine engine.

8. The method in accordance with claim 6 , wherein the cleaning solution further includes a foaming agent.

9. The method of claim 1 , wherein filling the volume of the interior passageway with an amount of cleaning solution comprises filling the volume of the interior passageway with an amount of cleaning solution without removing the component from the turbine engine.

10. The method of claim 1 , wherein disassembling the turbine engine to provide the flow path to the interior passageway of the component from the access point in the turbine engine comprises disassembling the turbine engine to provide a flow path to the interior passageway of the component from only a single access point in the turbine engine.

11. The method of claim 10 , wherein filling the volume of the interior passageway via the access point with an amount of cleaning solution comprises filling the volume of the interior passageway only via the single access point with the cleaning solution.

Assignees

• Gen Electric

Inventors

• Millhaem Michael Robert
• Tibbetts Nicole Jessica
• Pritchard Jr Byron Andrew
• Bewlay Bernard Patrick
• Lauria Keith Anthony
• Kulkarni Ambarish Jayant
• Rosenzweig Mark
• Morra Martin Matthew
• Sambor Timothy Mark
• Jenkins Andrew

Classifications

• B08B3/003

  Cleaning involving contact with foam · CPC title

• B08B3/14

  Removing waste, e.g. labels, from cleaning liquid · CPC title

• B08B3/08

  the liquid having chemical or dissolving effect · CPC title

• F01D25/002 Primary

  Cleaning of turbomachines · CPC title

• F05D2230/70

  Disassembly methods · CPC title