CN106563673A - Method for removing air conduit inner wall carbon deposition of aero-engine - Google Patents
Method for removing air conduit inner wall carbon deposition of aero-engine Download PDFInfo
- Publication number
- CN106563673A CN106563673A CN201610956706.4A CN201610956706A CN106563673A CN 106563673 A CN106563673 A CN 106563673A CN 201610956706 A CN201610956706 A CN 201610956706A CN 106563673 A CN106563673 A CN 106563673A
- Authority
- CN
- China
- Prior art keywords
- aero
- air conduit
- water jet
- long nozzle
- engine
- 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.)
- Pending
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Classifications
-
- 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
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
- B08B9/0326—Using pulsations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2209/00—Details of machines or methods for cleaning hollow articles
- B08B2209/02—Details of apparatuses or methods for cleaning pipes or tubes
- B08B2209/027—Details of apparatuses or methods for cleaning pipes or tubes for cleaning the internal surfaces
- B08B2209/032—Details of apparatuses or methods for cleaning pipes or tubes for cleaning the internal surfaces by the mechanical action of a moving fluid
Abstract
The invention relates to the technical field of aero-engine maintenance, in particular to a method for removing air conduit inner wall carbon deposition of an aero-engine. Ultrasonic waves are coupled with a high pressure pulsed water jet. The air conduit inner wall carbon deposition of the aero-engine is removed by a synergistic effect of the ultrasonic waves and the high pressure pulsed water jet through cleaning. The frequency of the ultrasonic waves is 20 kHz, and the pressure of the high pressure pulsed water jet is 20-21 MPa. The high pressure pulsed water jet is jetted through a long nozzle; the distance between the long nozzle and an inner wall is 3-5 mm; the diameter of the long nozzle is 1.0 mm; and the nozzle is made of stainless steel. According to the method, the ultrasonic waves and the high pressure pulsed water jet are combined; the carbon deposition inside an air conduit is completely removed under the high pressure pulsed water jet with the pressure being 20-21 MPa; a base body is well preserved in the removing process; no environment pollution is caused; the maintenance cost of the aero-engine is lowered; and the removing method can be widely applied to removal of the carbon deposition in the air conduit maintenance of the aero-engine.
Description
Technical field
The present invention relates to aircraft engine maintenance technical field, and in particular to a kind of aero-engine air conduit inwall product
The minimizing technology of carbon.
Background technology
Aero-engine air conduit can produce in use the carbon distribution of a layer thickness about 0.2 ~ 0.5mm in inwall.
Whole air conduit length is 910 mm, and inwall aperture only 110 mm, material is TC4 titanium alloys.The method for generally removing carbon remover
There are chemical method and High-Pressure Water method.Titanium alloy substrate can be caused according to chemical method damage, and waste liquid is not environmentally.On the other hand,
It is that a kind of physical absorption is combined because carbon distribution is existed with the combining form of sintered body on air conduit inwall, adhesion phase
It is higher with the adhesion of inwall compared with general same coating, therefore have higher wanting to water under high pressure removal air conduit inwall carbon distribution
Ask.
As water under high pressure technology is particularly the fast development of high-pressure water cleaning technique, high-pressure water is in coating removal field
It is developed rapidly.At present, in prior art the used hydraulic pressure for removing carbon remover typically in 80 ~ 500MPa, due to pressure it is high,
It is high to equipment requirements, simultaneously as the high conduit fragile in cleaning process of pressure.It is badly in need of a kind of low for equipment requirements, removal effect
It is really good, while the new method for removing carbon remover of air conduit will not be damaged.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, there is provided a kind of aero-engine air conduit inwall carbon distribution
Minimizing technology, mainly by ultrasonic wave-coupled to pressure for 20-21 MPa high-voltage pulse water jet, using ultrasound wave and high pressure
The dual function of pulse water jet removes air conduit inwall carbon distribution, and removal effect is good, will not damage air conduit.
The purpose of the present invention is achieved through the following technical solutions：
A kind of minimizing technology of aero-engine air conduit inwall carbon distribution, ultrasound wave and high-voltage pulse water jet is coupled, association
Same-action washes off aero-engine air conduit inwall carbon distribution, and the frequency of the ultrasound wave is 20kHz, high-voltage pulse water-jet
The pressure of stream is 20-21MPa, and high-voltage pulse water jet is sprayed by long nozzle, and the long nozzle is 8- with the distance of inwall
9mm, a diameter of 1.0mm of the long nozzle.
Further, the material of the long nozzle is rustless steel.
Further, the spray angle of the long nozzle is 60 ° -90 °.
Further, the mobile linear velocity of the long nozzle is 8-12mm/s.
Further, the scanning pattern of the long nozzle is linear scanning, and the spacing of adjacent two scanning patterns is 0.8-
1.2mm。
Further, the high-voltage pulse water jet is pure water high-voltage pulse water jet.
The invention has the beneficial effects as follows：The minimizing technology of the present invention is combined ultrasound wave with high-voltage pulse water jet, in pressure
To remove air conduit inside carbon distribution under the high-voltage pulse water jet of 20-21MPa completely, matrix is remained intact power in removal process,
Non-environmental-pollution, extends the service life of air conduit, reduces the maintenance cost of aero-engine, can be widely applied to boat
The removal of carbon distribution in empty engine air airway maintenance.
Specific embodiment
Technical scheme is described in further detail with reference to embodiment, but protection scope of the present invention is not limited to
In described below.
Embodiment 1
Certain type aero-engine air conduit needs the carbon distribution for removing one layer of about 0.5 mm during overhaul, is carried using the present invention
For ultrasonic wave-coupled high-voltage pulse water jet method make a return journey inwall carbon distribution, high-voltage pulse water jet is sprayed by long nozzle, institute
State a diameter of 1.0mm of long nozzle.The major parameter for removing carbon remover is：The frequency of ultrasound wave be 20 kHz, high-voltage pulse water-jet
The pressure of stream is 20 MPa, and long nozzle is 8 mm with the jet length of inwall, and the spray angle of long nozzle is 90 °, long nozzle
Mobile linear velocity is 10 mm/s, the mm of sweep span 1.AEI After End of Injection visual inspection interior wall construction is intact, and carbon distribution clearance reaches
To 100%, the method can be widely applied to the removal of old coating in the maintenance of aero-engine air conduit.
Embodiment 2
Certain type aero-engine air conduit needs the carbon distribution for removing one layer of about 0.5 mm during overhaul, is carried using the present invention
For ultrasonic wave-coupled high-voltage pulse water jet method make a return journey inwall carbon distribution, high-voltage pulse water jet is sprayed by long nozzle, institute
State a diameter of 1.0mm of long nozzle.The major parameter for removing carbon remover is：The frequency of ultrasound wave be 20 kHz, high-voltage pulse water-jet
The pressure of stream is 21 MPa, and long nozzle is 12 mm with the jet length of inwall, and the spray angle of long nozzle is 60 °, long nozzle
Mobile linear velocity be 12 mm/s, the mm of sweep span 1.2.AEI After End of Injection visual inspection interior wall construction is intact, and carbon distribution is removed
Rate reaches 100%, and the method can be widely applied to the removal of old coating in the maintenance of aero-engine air conduit.
Embodiment 3
Certain type aero-engine air conduit needs the carbon distribution for removing one layer of about 0.5 mm during overhaul, is carried using the present invention
For ultrasonic wave-coupled high-voltage pulse water jet method make a return journey inwall carbon distribution, high-voltage pulse water jet is sprayed by long nozzle, institute
State a diameter of 1.0mm of long nozzle.The major parameter for removing carbon remover is：The frequency of ultrasound wave be 20 kHz, high-voltage pulse water-jet
The pressure of stream is 20.5 MPa, and long nozzle is 10 mm with the jet length of inwall, and the spray angle of long nozzle is 80 °, long spray
The mobile linear velocity of mouth is 8 mm/s, the mm of sweep span 0.8.AEI After End of Injection visual inspection interior wall construction is intact, and carbon distribution is removed
Rate reaches 100%, and the method can be widely applied to the removal of old coating in the maintenance of aero-engine air conduit.
The above is only the preferred embodiment of the present invention, it should be understood that the present invention is not limited to described herein
Form, is not to be taken as the exclusion to other embodiment, and can be used for various other combinations, modification and environment, and can be at this
In the text contemplated scope, it is modified by the technology or knowledge of above-mentioned teaching or association area.And those skilled in the art are entered
Capable change and change, then all should be in the protection domains of claims of the present invention without departing from the spirit and scope of the present invention
It is interior.
Claims (5)
1. a kind of minimizing technology of aero-engine air conduit inwall carbon distribution, it is characterised in that by ultrasound wave and high-voltage pulse
Water jet is coupled, and synergism washes off aero-engine air conduit inwall carbon distribution, and the frequency of the ultrasound wave is
20kHz, the pressure of high-voltage pulse water jet is 20-21MPa, and high-voltage pulse water jet is sprayed by long nozzle, the long nozzle
It is 8-9mm, a diameter of 1.0mm of the long nozzle with the distance of inwall.
2. the minimizing technology of a kind of aero-engine air conduit inwall carbon distribution according to claim 1, it is characterised in that
The spray angle of the long nozzle is 60 ° -90 °.
3. the minimizing technology of a kind of aero-engine air conduit inwall carbon distribution according to claim 1, it is characterised in that
The mobile linear velocity of the long nozzle is 8-12mm/s.
4. the minimizing technology of a kind of aero-engine air conduit inwall carbon distribution according to claim 1, it is characterised in that
The scanning pattern of the long nozzle is linear scanning, and the spacing of adjacent two scanning patterns is 0.8-1.2mm.
5. the minimizing technology of a kind of aero-engine air conduit inwall carbon distribution according to claim 1-4 any one,
Characterized in that, the high-voltage pulse water jet is pure water high-voltage pulse water jet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610956706.4A CN106563673A (en) | 2016-10-27 | 2016-10-27 | Method for removing air conduit inner wall carbon deposition of aero-engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610956706.4A CN106563673A (en) | 2016-10-27 | 2016-10-27 | Method for removing air conduit inner wall carbon deposition of aero-engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106563673A true CN106563673A (en) | 2017-04-19 |
Family
ID=58535560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610956706.4A Pending CN106563673A (en) | 2016-10-27 | 2016-10-27 | Method for removing air conduit inner wall carbon deposition of aero-engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106563673A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110732529A (en) * | 2019-10-22 | 2020-01-31 | 北京动力机械研究所 | micro active cooling channel inner surface coking online cleaning method |
| CN116571489A (en) * | 2023-05-25 | 2023-08-11 | 北京金轮坤天特种机械有限公司 | High-pressure water jet cleaning method for environmental sediment on surface of thermal barrier coating |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101811121A (en) * | 2009-02-24 | 2010-08-25 | 任保林 | Vehicle-mounted eddy strong pulse resonant jet cleaning device |
| CN101912853A (en) * | 2010-09-03 | 2010-12-15 | 任保林 | Rust-removing cleaning device for ultrasonic pulse water jet pipe wall |
| CN104174605A (en) * | 2014-08-27 | 2014-12-03 | 西安远诚机电科技有限公司 | Pulse water jet coating peeling and finishing equipment |
-
2016
- 2016-10-27 CN CN201610956706.4A patent/CN106563673A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101811121A (en) * | 2009-02-24 | 2010-08-25 | 任保林 | Vehicle-mounted eddy strong pulse resonant jet cleaning device |
| CN101912853A (en) * | 2010-09-03 | 2010-12-15 | 任保林 | Rust-removing cleaning device for ultrasonic pulse water jet pipe wall |
| CN104174605A (en) * | 2014-08-27 | 2014-12-03 | 西安远诚机电科技有限公司 | Pulse water jet coating peeling and finishing equipment |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110732529A (en) * | 2019-10-22 | 2020-01-31 | 北京动力机械研究所 | micro active cooling channel inner surface coking online cleaning method |
| CN110732529B (en) * | 2019-10-22 | 2020-11-10 | 北京动力机械研究所 | Online cleaning method for coking on inner surface of micro active cooling channel |
| CN116571489A (en) * | 2023-05-25 | 2023-08-11 | 北京金轮坤天特种机械有限公司 | High-pressure water jet cleaning method for environmental sediment on surface of thermal barrier coating |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170419 |
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| RJ01 | Rejection of invention patent application after publication |