US20180195406A1 - Mobile on-wing engine washing and water reclamation system - Google Patents
Mobile on-wing engine washing and water reclamation system Download PDFInfo
- Publication number
- US20180195406A1 US20180195406A1 US15/914,342 US201815914342A US2018195406A1 US 20180195406 A1 US20180195406 A1 US 20180195406A1 US 201815914342 A US201815914342 A US 201815914342A US 2018195406 A1 US2018195406 A1 US 2018195406A1
- Authority
- US
- United States
- Prior art keywords
- engine
- liquid effluent
- trough
- cleaning liquid
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/04—Cleaning of, preventing corrosion or erosion in, or preventing unwanted deposits in, combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/002—Cleaning of turbomachines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B17/00—Methods preventing fouling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/14—Removing waste, e.g. labels, from cleaning liquid; Regenerating cleaning liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/30—Cleaning aircraft
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/70—Application in combination with
- F05D2220/74—Application in combination with a gas turbine
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
-
- Y02P70/585—
Abstract
Description
- The present application is a divisional of U.S. patent application Ser. No. 11/098,064, filed Apr. 4, 2005.
- The present invention relates to a mobile on-wing engine washing system having a mobile unit for reclaiming water used to wash the engine.
- Jet engine efficiencies are reduced due to environmental contamination buildup in the engine components. Compressor blades and vanes can suffer from the accumulation of hydrocarbon deposits, dirt, salt, and corrosion residues, affecting their aerodynamic performance. These deposits can increase exhaust gas temperature and fuel use and decrease the engine's surge margin.
- Many operators report good success in performance recovery using water wash procedures on a regular basis. The washing process involves cyclic washing of the engine with large amounts of water and sometimes, a small amount of detergent. The engine is motored at approximately 20% rpm during washing. Water wash procedures are currently performed in fixed hangar installations where the wastewater is collected and disposed of.
- The effects of water wash are highly operator specific, based on such things as operating environment, time prior to first washing, and interval between washes. Once a deposited contaminant hardens or the amount becomes excessive, then the effectiveness of a water wash becomes reduced or possibly ineffective. Therefore, water washing should be performed frequently (around 750 hours). The cleanliness of the compressors may be noted during maintenance periods to determine if the wash interval used is effective.
- Accordingly, it is desired to provide a system and a process for washing engines which allows engine operators to clean their engines more frequently without significantly impacting aircraft availability.
- It is further desired to provide a system and process as above which can be performed on-wing using mobile technology, while still complying with relevant environmental considerations and regulations.
- It is still further desired to provide a system and process as above which does not require valuable hangar time.
- The foregoing desires can be attained by the system and the process of the present invention.
- In accordance with embodiments of the present invention, a system for engine washing and water reclamation is provided. The system broadly comprises means for operating an engine, means for introducing a cleaning liquid containing at least water into the engine while the engine is being operated, and mobile means for collecting the cleaning liquid from an exit end of the engine and from underneath the engine.
- Further in accordance with embodiments of the present invention, a process for on-wing engine washing and water reclamation is provided. The process broadly comprises the steps of initiating operation of an engine, introducing a cleaning liquid containing at least water into the engine while the engine is operating, and collecting the cleaning liquid from an exit end of the engine and from underneath the engine onto a mobile unit.
- Other details of the mobile on-wing engine washing and water reclamation system, as well as other features and advantages attendant thereto, are set forth in the following detailed description and the accompanying drawings, wherein like reference numerals depict like elements.
-
FIG. 1 illustrates a mobile on-wing engine washing and water reclamation system in accordance with the present invention; -
FIG. 2 is a schematic representation of a portion of an effluent trough used in the system ofFIG. 1 ; -
FIG. 3 illustrates a diversion ducting system which may be employed in the system ofFIG. 1 ; -
FIG. 4 illustrates a centrifugal separation unit which may be used in the system ofFIG. 1 ; -
FIG. 5 illustrates an inertial separation unit which may be used in the system ofFIG. 1 ; -
FIG. 6 illustrates an alternative embodiment of a mobile on-wing engine washing and water reclamation system; and -
FIG. 7 illustrates a spray applicator connected to a support structure. - Referring now to
FIGS. 1 and 2 , there is shown a mobile on-wing engine washing andwater reclamation system 10 in accordance with the present invention. Thesystem 10 includes amobile unit 12 on which there is located asource 14 of cleaning liquid and a used cleaning liquid collection trough oreffluent trough 16. Thesystem 10 also includes a secondmobile unit 18 on which there is located awater treatment unit 20, acollection tank 22, and agenerator 24 for mobile power production. While thetrough 16 has been shown as being onmobile unit 12, it could be located on the secondmobile unit 18 or on yet another mobile unit. - The cleaning
liquid source 14 may contain water by itself or water mixed with an appropriate detergent. The detergent may comprise any suitable detergent known in the art in any suitable concentration. The particular type of detergent used, if any, depends on the type of contaminants, dirt, etc. to be removed. The cleaningliquid source 14 may comprise a wash unit with a pump, a heater, and a tank. - The cleaning
liquid source 14 is connected to asolution applicator 26, such as one or more spray nozzles, by a hose ortubing 28. In one embodiment of the present invention, thesolution applicator 26 may be located at the end of a shepherd'stool 30. In another embodiment, thesolution applicator 26 may be part of a flexible or fixed support structure 80 (seeFIG. 7 ). A suitable pump (not shown) may be provided in thesource 14 or elsewhere on theunit 12 orunit 18 to generate a pressurized flow of the cleaning liquid through theapplicator 26. - The spray applicator may have a single nozzle or multiple nozzles. If nozzles are used, one or more nozzles may introduce the cleaning liquid into the compressor and one or more nozzles may introduce the cleaning liquid onto the fan section.
- The
spray applicator 26 may be inserted into a portion of an on-wing engine 32 to be cleaned. Preferably, thespray applicator 26 is positioned so that the cleaning liquid flows into a compressor section of theengine 32. The fan area of theengine 32 may or may not be washed. - In a preferred embodiment of the present invention, the cleaning liquid is introduced into the on-
wing engine 32 while theengine 32 is operating or motoring. Theengine 32 may be motored or operated using astarter 36. Thestarter 36 may be a starter onboard the aircraft (not shown) or may be attached to themobile units engine 32 into the fan area and/or the compressor section. The cleaning liquid will pass through the entire engine from the compressor section throughout the turbine section to the exhaust section. - Cleaning liquid which has passed through the engine may be collected into the
trough 16 via acollection conduit 38 connected to the exit end orexhaust nozzle 40 of theengine 32. Theconduit 38 has anoutlet 42 that deposits the collected cleaning liquid into thetrough 16. Preferably, thetrough 16 is positioned beneath theengine 32. The collection method may include adiversion ducting system 50 such as shown inFIG. 3 which captures the air/water effluent and separates the droplets from the air flow. “Diversion ducting” refers to ducting the air flow through a series of “diversion”plates 54 so that the water droplets impact theplates 54 and fall out of the air stream. “Diversion ducting” is a method of achieving “inertial separation”. The water droplets exiting thediversion ducting system 50 may be collected in thetrough 16 or elsewhere for treatment. - There are many ways to separate water droplets from the air streams exiting the
engine 32. These other ways include, but are not limited to, filters, gutters, directional changes, etc. Centrifugal separation is also a method of inertial separation but “spins” or “throws” out the droplets by channeling the airflow around acurved surface 60 as shown inFIG. 4 thus causing the droplets to impact the curved surface and then fall out of the air stream. - In an alternative method of solution application, an
applicator 26 that washes both fan and compressor may be introduced into theengine inlet 34. - Referring now to
FIG. 2 , an inertial orcentrifugal separation unit 33 may be used to perform air/water separation. The inertial separation unit when used may comprise any suitable inertial separation unit known in the art such as that shown inFIG. 5 . Similarly, the centrifugal separation unit, when used, may comprise any suitable centrifugal separation unit known in the art such as that shown inFIG. 4 . - The
mobile unit 12 has apump 44, such as a sump pump, for conveying collected cleaning liquid from thetrough 16 to thewater treatment unit 20. Apower distribution device 46 may be provided on theunit 12 orunit 18. Thepower distribution device 46 is connected to thegenerator 24 and may be used to power thepump 44 and/or the pump (not shown) for generating the spray of cleaning liquid. - The
water treatment unit 20 may comprise any suitable water treatment unit known in the art. Preferably, thewater treatment unit 20 includes afilter 48 for removing solid particulates and oils. Thewater treatment unit 20 may also include means for treating the collected liquid to remove dissolved solids. - The filtered and treated water is reclaimed and collected in the
collection tank 22. The reclaimed water in thetank 22 may be pumped to the cleaningliquid source 14 using a suitable hose and pump arrangement and used as the base cleaning liquid. - The volume of water used to clean the engine varies by engine size and type. Generally, from about 30 to 60 gallons of water will be used per engine.
- While the system has been shown as including two mobile units, it should be recognized that the system could be placed on a single mobile cart or three carts if desired. The emphasis is upon mobility, flexibility for a variety of engines, and independent operation.
- The system and process of the present invention provide a number of advantages. First, engine operators can clean their engines more frequently without significantly impacting aircraft availability. Second, engine efficiency can be increased due to more frequent cleaning. Third, the cleaning procedure can be performed on-wing since it involves mobile technology. Fourth, valuable hangar time is not required. Fifth, the system takes advantage of environmental friendly, waste water collection, and re-circulation. Sixth, there is no water disposal costs due to recycling. Seventh, the system provides quick turn-time and a low impact cleaning process. Eighth, the system and the process are economically desirable because of greatly reduced cleaning costs and improved quality.
- While the system of
FIG. 1 has been shown as including aconduit 38, the conduit may be omitted if desired. In such a case, the air/water exiting theengine 32 collects in thetrough 16 positioned underneath theengine 32. A collection duct ordevice 70 which is not connected to theengine 32, as shown inFIG. 6 , may be used to further collect the air/water exiting the engine. The duct ordevice 70 may be provided with a suitable means 72 for droplet separation, such as a diversion ducting unit, an inertial separation unit, or a centrifugal separation unit. The duct ordevice 70 may have anoutlet 74 for allowing collected liquid to flow intotank 14. - It is apparent that there has been provided in accordance with the present invention a mobile on-wing engine washing and water reclamation system which fully satisfies the objects, means, and advantages set forth hereinbefore. While the present invention has been described in connection with specific embodiments thereof, other alternatives, modifications, and variations will become apparent to those skilled in the art having read the foregoing description. Accordingly, it is intended to embrace those alternatives, modifications, and variations which fall within the broad scope of the appended claims.
Claims (20)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/914,342 US20180195406A1 (en) | 2005-04-04 | 2018-03-07 | Mobile on-wing engine washing and water reclamation system |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/098,064 US9790808B2 (en) | 2005-04-04 | 2005-04-04 | Mobile on-wing engine washing and water reclamation system |
US15/692,383 US20170362956A1 (en) | 2005-04-04 | 2017-08-31 | Mobile on-wing engine washing and water reclamation system |
US15/914,342 US20180195406A1 (en) | 2005-04-04 | 2018-03-07 | Mobile on-wing engine washing and water reclamation system |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/692,383 Continuation US20170362956A1 (en) | 2005-04-04 | 2017-08-31 | Mobile on-wing engine washing and water reclamation system |
Publications (1)
Publication Number | Publication Date |
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US20180195406A1 true US20180195406A1 (en) | 2018-07-12 |
Family
ID=36579773
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/098,064 Active 2030-05-30 US9790808B2 (en) | 2005-04-04 | 2005-04-04 | Mobile on-wing engine washing and water reclamation system |
US14/252,070 Abandoned US20140216501A1 (en) | 2005-04-04 | 2014-04-14 | Mobile on-wing engine washing and water reclamation system |
US15/692,383 Abandoned US20170362956A1 (en) | 2005-04-04 | 2017-08-31 | Mobile on-wing engine washing and water reclamation system |
US15/914,342 Abandoned US20180195406A1 (en) | 2005-04-04 | 2018-03-07 | Mobile on-wing engine washing and water reclamation system |
Family Applications Before (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/098,064 Active 2030-05-30 US9790808B2 (en) | 2005-04-04 | 2005-04-04 | Mobile on-wing engine washing and water reclamation system |
US14/252,070 Abandoned US20140216501A1 (en) | 2005-04-04 | 2014-04-14 | Mobile on-wing engine washing and water reclamation system |
US15/692,383 Abandoned US20170362956A1 (en) | 2005-04-04 | 2017-08-31 | Mobile on-wing engine washing and water reclamation system |
Country Status (16)
Country | Link |
---|---|
US (4) | US9790808B2 (en) |
EP (2) | EP1871667B1 (en) |
JP (2) | JP5070199B2 (en) |
KR (2) | KR100993440B1 (en) |
CN (1) | CN101180215A (en) |
AR (1) | AR060097A1 (en) |
AT (1) | ATE475593T1 (en) |
DE (1) | DE602006015792D1 (en) |
DK (1) | DK1871667T3 (en) |
ES (1) | ES2349051T3 (en) |
MY (1) | MY144914A (en) |
PL (1) | PL1871667T3 (en) |
PT (1) | PT1871667E (en) |
SG (1) | SG161235A1 (en) |
TW (1) | TWI305764B (en) |
WO (1) | WO2006107476A1 (en) |
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- 2006-03-01 KR KR1020077024033A patent/KR100993440B1/en not_active IP Right Cessation
- 2006-03-01 EP EP06736922A patent/EP1871667B1/en active Active
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- 2006-03-01 EP EP10007385.7A patent/EP2233398B1/en active Active
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- 2006-03-01 CN CNA2006800179617A patent/CN101180215A/en active Pending
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US20140216501A1 (en) | 2014-08-07 |
US20060219269A1 (en) | 2006-10-05 |
JP5184611B2 (en) | 2013-04-17 |
US20170362956A1 (en) | 2017-12-21 |
EP1871667A1 (en) | 2008-01-02 |
JP2011047410A (en) | 2011-03-10 |
KR100993440B1 (en) | 2010-11-09 |
EP2233398B1 (en) | 2015-07-08 |
US9790808B2 (en) | 2017-10-17 |
SG161235A1 (en) | 2010-05-27 |
WO2006107476A1 (en) | 2006-10-12 |
ES2349051T3 (en) | 2010-12-22 |
JP2008537583A (en) | 2008-09-18 |
KR20100028126A (en) | 2010-03-11 |
DE602006015792D1 (en) | 2010-09-09 |
PT1871667E (en) | 2010-10-04 |
AR060097A1 (en) | 2008-05-28 |
KR101300376B1 (en) | 2013-08-29 |
JP5070199B2 (en) | 2012-11-07 |
DK1871667T3 (en) | 2010-11-22 |
MY144914A (en) | 2011-11-30 |
PL1871667T3 (en) | 2011-01-31 |
EP2233398A1 (en) | 2010-09-29 |
TW200702238A (en) | 2007-01-16 |
CN101180215A (en) | 2008-05-14 |
EP1871667B1 (en) | 2010-07-28 |
ATE475593T1 (en) | 2010-08-15 |
KR20080028840A (en) | 2008-04-01 |
TWI305764B (en) | 2009-02-01 |
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