CN105092192A - Vibratory test method of airplane fuel tank - Google Patents
Vibratory test method of airplane fuel tank Download PDFInfo
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- CN105092192A CN105092192A CN201410188629.3A CN201410188629A CN105092192A CN 105092192 A CN105092192 A CN 105092192A CN 201410188629 A CN201410188629 A CN 201410188629A CN 105092192 A CN105092192 A CN 105092192A
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- fuel
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Abstract
The invention belongs to the technical field of airplane tests and especially relates to a vibratory test method of an airplane fuel tank. According to the vibratory test method of the airplane fuel tank, before a test, a fuel oil sensor, a cable, a fuel oil pressure sensor, an oil level annunciator, and an overflow valve are taken out of the fuel tank and a disconnected position is plugged; an engine oil feed pipe, transmission pipes, an oil return pipe are disconnected and are plugged by a plugging cover; and an oil filling pipe and a control pipe are plugged in order to ensure that fuel oil system parts cannot be damaged in a test process. The fuel tank is cleaned according to the above method in order that water and impurities left in the fuel tank can be removed. As a result, the security of fuel oil accessories, an engine, and an airplane are guaranteed.
Description
Technical field
The invention belongs to aircraft testing technical field, particularly relate to a kind of vibration testing method to fuel tanker.
Background technology
The object of the full machine vibration test of aircraft is the ability that examination aircraft keeps its operating characteristic and integrality under the vibrational loading of regulation severity, and vibration may cause the fatigue of aircraft, and aircraft can go on record at the defect pipelines of duration of test.Need after transporation by plane is good to do the test of full machine vibration, full machine vibration test is carrying out in full load state of aircraft, in other words the aircraft will simulated under full oil condition carries out the indices of full machine vibration test, with oil be aircraft do full machine vibration test there is very large risk, produce electrostatic in process of the test and may light fuel oil, cause the accident, through considering, determine to add water in fuel tank and carry out the full machine vibration test of aircraft, fuel weight under the full oil condition of contrast aircraft, the water of same weight is added in fuel tank, consider that fuel tanker must clean very much, add common water meeting impurity many, fuel tank can be polluted and then pollute engine.
Fuel system comprises fuel tank 6, fuel pump 20, fuel-quantity transducer 18, fuel level annunciator 9, jet pump 15, fuel outlet valve 22, engine oil return pipe 5, put precipitation valve 23, jet pump oil inlet pipe 16, jet pump flowline 17, engine oil pipe 3, defeated pipe 2 handed over by left and right engine, check valve 19, surplus valve 12, snorkel 8, snorkel 11, , control tube 14, fuelling coupling 24, vacuum valve 10, oil filler 7, overflow conduit 13, fuel pressure transmitter 21, stop valve 4, stop valve 26, parts such as filling spout 25 grade.
Fuel pump 20, fuel-quantity transducer 18, fuel level annunciator 9, jet pump 15, fuel outlet valve 22, put precipitation valve 23, jet pump oil inlet pipe 16, jet pump flowline 17, engine oil pipe 3, check valve 19, surplus valve 12, snorkel 8, snorkel 11, control tube 14 is positioned at fuel tank, float valve 8a, float valve 11a as the part of snorkel also in fuel tank, fuelling coupling 24, defeated pipe 2 handed over by left and right engine, vacuum valve 10, oil filler 7, overflow conduit 13, fuel pressure transmitter 21, stop valve 4, stop valve 26, filling spout 25 is positioned at outside fuel tank, blow vent 8b, blow vent 11b as the part of snorkel outside fuel tank.Fuel pump 20, fuel-quantity transducer 18, fuel level annunciator 9, these parts of fuel pressure transmitter 21 can not be impaired or by corrosion in process of the test.Can not be moisture in test rear fuel tank, if having water to produce microorganism in fuel oil after test, foul in fuel tank, fuel oil can be caused to go bad, and floating thing pollutes fuel tank, can damage engine.Fuel tank internal annex corrosion damage after overtesting occurred in the past aboard, has peculiar smell in fuel tank, the fuel oil of band water enters engine makes engine generation surge, even flame-out, make aircraft occur vibration, engine damage fault, cause aircraft to damage and economic loss, jeopardize the safety of aircraft.
Summary of the invention
Object of the present invention
Propose a kind of aircraft vehicle vibrations test fuel tank shutoff scheme and cleaning method, prevent lower-grade fuel corrosion in fuel tank and fuel tank, prevent because fuel tank pollutes the engine damage caused.
Technical scheme of the present invention
A kind of fuel tanker vibration testing method, it is characterized in that, this method comprises the following steps:
The first step, by easily damaged or easily removed by the parts of corrosion at the trial in fuel tank, and the good interface of shutoff.
Second step, fuel tank and parts shutoff good after, cover and safeguard lid 1, with rubber stopper by blow vent 8b, 11b, shutoff, from vacuum valve blow vent 10a injection pressure air, tightness test is carried out, after stand the test to system, inject the distilled water of the full oil mass equal mass with fuel tank from oil filler 7, after water filling, full machine vibration test is carried out to aircraft.
3rd step, after vibration test completes, clean fuel tank according to the following steps:
(1) open fuel outlet valve 22 and release water in fuel tank, close fuel outlet valve when fuel outlet valve can not release water, then continue to release water remaining in fuel tank with putting precipitation valve 23, put precipitation when can not release water, open and safeguard lid 1, with the sopping rag wiping fuel tank not falling hair.
(2) after there is no visible water in fuel tank, with each position of dry wipe again wiping fuel tank, until not wet trace.
(3) fuel pump blanking cover 36 is removed, install back fuel pump 20, kerosene is added in fuel tank, engine oil pipe 3 is communicated with engine oil return pipe 5, open fuel pump, allow water remaining in fuel flow detergent line, after 10 to 15 minutes, close fuel pump, open fuel outlet valve 22 and release kerosene a large amount of in fuel tank, close fuel outlet valve when fuel outlet valve can not release oil, continue to release oil remaining in fuel tank with putting precipitation valve 23 again, after putting precipitation valve can not releasing fuel oil, with the oil suction rag wiping fuel tank not falling hair, each position of carefully polishing in case.
(4) after there is no visible oil in fuel tank, with each position of dry wipe again wiping fuel tank, until wet trace, then dip in each position of alcohol wiping fuel tank again with dry wipe, guarantee that not omitting position does not wipe.
(5) in fuel tank, kerosene is added again, open fuel pump, after allowing fuel oil circulate 10 to 15 minutes minutes in pipeline, close fuel pump 20, open fuel outlet valve 22 and release kerosene a large amount of in fuel tank, close fuel outlet valve 22 when fuel outlet valve can not release oil, continue to release oil remaining in fuel tank with putting precipitation valve 23 again, with the oil suction rag wiping fuel tank not falling hair, each position of carefully polishing in case, until not wet trace
(6) 2 wipings are carried out again by above-mentioned steps 5.
(7) after having cleaned, fuel tank is returned to the state before test, until fuel tank natural air drying after 24 hours, cover and safeguard lid 1, clean complete.
Described easily damaged or easily comprised by the parts of corrosion: surplus valve 12, fuel pump 20, fuel-quantity transducer 18, fuel level annunciator 9, fuel pressure transmitter 21.
Technique effect of the present invention
Fuel-quantity transducer and cable thereof, fuel pressure transmitter, fuel level annunciator, surplus valve take out and shutoff open position by the present invention before the test in fuel tank, by engine oil pipe, defeated pipe, scavenge pipe is handed over to disconnect and carry out shutoff with blanking cover, by filling spout, control tube shutoff, parts can not be damaged in process of the test to guarantee fuel-system components.Clean fuel tank as stated above after test, water remaining in fuel tank and impurity can be removed, ensure that the safety of lower-grade fuel, engine and aircraft.
Accompanying drawing explanation
Fig. 1 is wing tank internal structure schematic diagram;
Fig. 2 is the schematic diagram that fuel system carries out vibration test occluding member;
Fig. 3 is that fuel system carries out cleaning part schematic diagram after vibration test.
Wherein, 1. fuel tank safeguards that lid about 2. engine is handed over defeated pipe 3. engine oil pipe 4. stop valve 5. engine oil return pipe 6. fuel tank 6a. Partition board for fuel tank 6b. consumption Partition board for fuel tank 6c. fuel tank reinforcement 7. oil filler 8. snorkel 8a. float valve 8b. blow vent 9. fuel level annunciator 10. vacuum valve 10a. vacuum valve blow vent 11. snorkel 11a. float valve 11b. blow vent 12. surplus valve 13. overflow conduit 14. control tube 15. jet pump 16. petroleum pipeline 17. petroleum pipeline 18. fuel-quantity transducer 19. check valve 20. fuel pump 21. fuel pressure transmitter 22. fuel outlet valve 23. to put precipitation valve 24. fuelling coupling 25. filling spout 26. stop valve 27. filling spout blanking cover 28. and handed over defeated pipe plug lid 29. fuel feed pump blanking cover 30. scavenge pipe blanking cover 31. fuel level annunciator blanking cover 32. surplus valve blanking cover 33. control tube blanking cover 34. fuel-quantity transducer plug blanking cover 35. pressure signal device blanking cover 36. fuel pump blanking cover.
Embodiment
1. shutoff in the requsst listed below before test.
(1) first open and safeguard lid 1, the fuel level annunciator 9 in fuel tank 6, fuel-quantity transducer 18 are taken out in fuel tank, with fuel level annunciator blanking cover 31, fuel-quantity transducer plug blanking cover 34 in open position shutoff.
(2) from dismounting fuel pump 20 in fuel tank 6, with fuel pump blanking cover 36 in open position shutoff.
(3) in fuel tank 6, surplus valve 12 is taken out, with the mounting hole on surplus valve blanking cover 32 shutoff floor, the control tube 14 disconnected with control tube blanking cover 33 shutoff.
(4) disconnect left and right engine and hand over defeated pipe 2, engine oil pipe 3, engine oil return pipe 5, with the defeated pipe plug lid 28 of friendship, fuel feed pump blanking cover 29, scavenge pipe blanking cover 30 in open position shutoff.
(5) from fuel tank, fuel pressure transmitter 21 is disconnected, with pressure signal device blanking cover 35 in open position shutoff.
(6) use filling spout blanking cover 27 by the endpiece shutoff of filling spout 25.
(7) fuel tank and annex shutoff good after, cover and safeguard lid 1, with rubber stopper by blow vent 8b, 11b, shutoff, from vacuum valve blow vent 10a injection pressure air, tightness test is carried out to system, after stand the test, from oil filler 7 water filling, by test mission book, full machine vibration test is carried out, until tested to aircraft after water filling.
2., after test, clean fuel tank in the requsst listed below.
(1) open fuel outlet valve 22 and release water a large amount of in fuel tank, fuel outlet valve is closed when fuel outlet valve can not release water, continue to release water remaining in fuel tank with putting precipitation valve 23 again, put precipitation when can not release water, open and safeguard lid 1, with the sopping rag wiping fuel tank not falling hair, each position of carefully polishing in case.
(2) after there is no visible water in fuel tank, with each position of dry wipe again wiping fuel tank, until not wet trace.
(3) fuel pump blanking cover 36 is removed, fuel pump 20 is installed, kerosene is added in fuel tank, engine oil pipe 3 is communicated with engine oil return pipe 5, open fuel pump, allow water remaining in fuel flow detergent line, after 10 to 15 minutes, close fuel pump, open fuel outlet valve 22 and release kerosene a large amount of in fuel tank, close fuel outlet valve when fuel outlet valve can not release oil, continue to release oil remaining in fuel tank with putting precipitation valve 23 again, after putting precipitation valve can not releasing fuel oil, with the oil suction rag wiping fuel tank not falling hair, each position of carefully polishing in case.
(4) after there is no visible oil in fuel tank, with each position of dry wipe again wiping fuel tank, until wet trace, then dip in each position of alcohol wiping fuel tank again with dry wipe, guarantee that not omitting position does not wipe.
(5) in fuel tank, kerosene is added, open fuel pump, after allowing fuel oil circulate 10 minutes in pipeline, close fuel pump 20, open fuel outlet valve 22 and release kerosene a large amount of in fuel tank, close fuel outlet valve 22 when fuel outlet valve can not release oil, continue to release oil remaining in fuel tank with putting precipitation valve 23 again, with the oil suction rag wiping fuel tank not falling hair, each position of carefully polishing in case, until not wet trace
(6) 2 wipings are carried out again by above-mentioned steps 5.
(7), after having cleaned, by the state returned to before test of Fig. 1 installation form, until fuel tank natural air drying after 24 hours, cover and safeguard lid 1, clean complete.
Claims (2)
1. a fuel tanker vibration testing method, is characterized in that, this method comprises the following steps:
The first step, by easily damaged or easily removed by the parts of corrosion at the trial in fuel tank, and the good interface of shutoff;
Second step, fuel tank and parts shutoff good after, cover and safeguard lid (1), with rubber stopper by blow vent (8b), (11b) shutoff, from vacuum valve blow vent (10a) injection pressure air, tightness test is carried out, after stand the test to system, inject the distilled water of the full oil mass equal mass with fuel tank from oil filler (7), after water filling, full machine vibration test is carried out to aircraft;
3rd step, after vibration test completes, clean fuel tank according to the following steps:
1) water in fuel outlet valve (22) releasing fuel tank is opened, fuel outlet valve is closed when fuel outlet valve can not release water, continue to release water remaining in fuel tank with putting precipitation valve (23) again, put precipitation when can not release water, open and safeguard lid (1), with the sopping rag wiping fuel tank not falling hair;
2) after there is no visible water in fuel tank, with each position of dry wipe again wiping fuel tank, until not wet trace;
3) fuel pump blanking cover (36) is removed, install back fuel pump (20), kerosene is added in fuel tank, engine oil pipe (3) is communicated with engine oil return pipe (5), open fuel pump, allow water remaining in fuel flow detergent line, after 10 to 15 minutes, close fuel pump, open fuel outlet valve (22) and release kerosene a large amount of in fuel tank, fuel outlet valve is closed when fuel outlet valve can not release oil, continue to release oil remaining in fuel tank with putting precipitation valve (23) again, after putting precipitation valve can not releasing fuel oil, with the oil suction rag wiping fuel tank not falling hair, each position of carefully polishing in case,
4) after there is no visible oil in fuel tank, with each position of dry wipe again wiping fuel tank, until wet trace, then dip in each position of alcohol wiping fuel tank again with dry wipe, guarantee that not omitting position does not wipe;
5) in fuel tank, kerosene is added again, open fuel pump, after allowing fuel oil circulate 10 to 15 minutes minutes in pipeline, close fuel pump (20), open fuel outlet valve (22) and release kerosene a large amount of in fuel tank, close fuel outlet valve (22) when fuel outlet valve can not release oil, continue to release oil remaining in fuel tank with putting precipitation valve (23) again, with the oil suction rag wiping fuel tank not falling hair, each position of carefully polishing in case, until not wet trace
6) 2 wipings are carried out again by above-mentioned steps 5;
7) after having cleaned, fuel tank is returned to the state before test, until fuel tank natural air drying after 24 hours, cover and safeguard lid 1, clean complete.
2. a kind of fuel tanker vibration testing method as claimed in claim 1, it is characterized in that, described easily damaged or easily comprised by the parts of corrosion: surplus valve (12), fuel pump (20), fuel-quantity transducer (18), fuel level annunciator (9), fuel pressure transmitter (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410188629.3A CN105092192A (en) | 2014-05-07 | 2014-05-07 | Vibratory test method of airplane fuel tank |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410188629.3A CN105092192A (en) | 2014-05-07 | 2014-05-07 | Vibratory test method of airplane fuel tank |
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| CN105092192A true CN105092192A (en) | 2015-11-25 |
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| CN201410188629.3A Pending CN105092192A (en) | 2014-05-07 | 2014-05-07 | Vibratory test method of airplane fuel tank |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840560A (en) * | 2015-12-04 | 2017-06-13 | 中航通飞研究院有限公司 | A kind of Novel fuel tank shakes pilot system of shaking |
| CN109404135A (en) * | 2018-12-07 | 2019-03-01 | 江西洪都航空工业集团有限责任公司 | A kind of oil-return type oil transportation control system |
| CN113686498A (en) * | 2021-08-06 | 2021-11-23 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | Vibration sealing test device for sealing strip of wing oil tank opening cover |
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| CN201385032Y (en) * | 2009-03-05 | 2010-01-20 | 天津港第四港埠有限公司 | Cleaning device for fuel tank of engineering machinery |
| CN202033165U (en) * | 2011-04-13 | 2011-11-09 | 亚普汽车部件有限公司 | Device for testing anti-vibration performance of plastic fuel tank |
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2014
- 2014-05-07 CN CN201410188629.3A patent/CN105092192A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201385032Y (en) * | 2009-03-05 | 2010-01-20 | 天津港第四港埠有限公司 | Cleaning device for fuel tank of engineering machinery |
| CN202033165U (en) * | 2011-04-13 | 2011-11-09 | 亚普汽车部件有限公司 | Device for testing anti-vibration performance of plastic fuel tank |
Non-Patent Citations (2)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840560A (en) * | 2015-12-04 | 2017-06-13 | 中航通飞研究院有限公司 | A kind of Novel fuel tank shakes pilot system of shaking |
| CN109404135A (en) * | 2018-12-07 | 2019-03-01 | 江西洪都航空工业集团有限责任公司 | A kind of oil-return type oil transportation control system |
| CN109404135B (en) * | 2018-12-07 | 2023-12-26 | 江西洪都航空工业集团有限责任公司 | Oil return type oil transportation control system |
| CN113686498A (en) * | 2021-08-06 | 2021-11-23 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | Vibration sealing test device for sealing strip of wing oil tank opening cover |
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Application publication date: 20151125 |
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