CN104960670B - Residual-oil discharging method for ventilation cabinet of fuel system of negative dihedral wing of large aircraft - Google Patents
Residual-oil discharging method for ventilation cabinet of fuel system of negative dihedral wing of large aircraft Download PDFInfo
- Publication number
- CN104960670B CN104960670B CN201510346462.3A CN201510346462A CN104960670B CN 104960670 B CN104960670 B CN 104960670B CN 201510346462 A CN201510346462 A CN 201510346462A CN 104960670 B CN104960670 B CN 104960670B
- Authority
- CN
- China
- Prior art keywords
- oil
- vent box
- fuel
- residual
- excess
- 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.)
- Active
Links
Landscapes
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
Abstract
The invention relates to a residual-oil discharging technology for ventilation cabinets of fuel systems of aircrafts, particularly to a residual-oil discharging method for a ventilation cabinet of a fuel system of a negative dihedral wing of a large aircraft, and solves the problems that a conventional residual-oil discharging method is low in residual oil discharging efficiency and inconvenient to operate. According to the residual-oil discharging method for the ventilation cabinet, which is disclosed by the invention, when the amount of residual oil in the ventilation cabinet is larger than a preset value, most of fuel is discharged to a main oil tank through an oil discharging system, so that the waste of the fuel is avoided; when the amount of the residual oil in the ventilation cabinet is smaller than the preset value, the residual oil is discharged through a sediment discharging valve; in addition, if the initial amount of the residual oil in the ventilation cabinet is smaller than the preset value, the residual oil is directly discharged through the sediment discharging valve. The residual-oil discharging method combines two oil discharging manners, so that the oil discharging efficiency is improved, and the oil can be thoroughly discharged; the fuel can be prevented from being splashed on the bodies of maintenance personnel on the ground or polluting the surrounding environment; besides, the workload for opening a maintenance mouth cover is omitted.
Description
Technical field
The present invention relates to aircraft fuel system vent box excess oil draining technology, and in particular to anti-wing under a kind of large aircraft
Fuel system vent box excess oil discharge method.
Background technology
Conventional airplane fuel system vent box excess oil is discharged：Lid is safeguarded by opening vent box, will be in vent box
Excess oil is emitted.It has the disadvantage that oil extraction efficiency is low, also, due to judging to lead in the case of vent box safeguards lid not opening
The excess oil amount of gas tank so that oil extraction process intermediate fuel oil is easily sprayed onto with ground maintenance personnel, fuel oil can also pollute ring around
Border.
The content of the invention
It is an object of the invention to provide anti-wing fuel system vent box excess oil discharge method under a kind of large aircraft, to solve
Certainly excess oil discharge method oil extraction efficiency is low, unhandy problem.
The technical scheme is that：
Anti- wing fuel system vent box excess oil discharge method, comprises the steps under a kind of large aircraft：
Whether step one, the excess oil amount judged in vent box are less than an excess oil predetermined value, if it is not, then carrying out step
Two；Otherwise, step 3 is carried out；
Step 2, is delivered to the fuel oil in the vent box in main fuel tank by oil draining system, until the vent box
In fuel quantity when being less than the excess oil predetermined value, control the oil draining system and quit work, then carry out step 3；
Step 3, by open the vent box bottom put precipitation valve to discharge the step 2 in remaining fuel oil,
When judging that the remaining fuel emission is complete, described in closing precipitation valve is put.
Alternatively, in the step one, be by being arranged on the vent box in magnetic oil ruler it is described logical to judge
Excess oil amount in gas tank.
Alternatively the excess oil amount is 10kg.
Alternatively, in the step 2, the oil draining system includes the electronic oil feed pump being arranged in the main fuel tank
And the oil return jet pump being arranged in the vent box, the oil-out of the electronic oil feed pump drawn by pipeline with the oil return
Penetrate the dynamic head piece connection of pump；
In the step 2, by controlling the electronic fuel feeding pump work or stopping the oil return jet pump is controlled
Fuel oil in the vent box is delivered in the main fuel tank or is stopped oil transportation.
Alternatively, in the step 3, be controlled by putting deposition tool it is described put precipitation valve, and by the step
Remaining excess oil is discharged in the oil holder for putting precipitation valve bottom in two.
Alternatively, in the step 3, when the oil discharged in precipitation valve of putting is in oil droplet shape, and speed is less than 10
During drop/min, judge that the remaining fuel emission is complete.
Beneficial effects of the present invention：
The present invention large aircraft under anti-wing fuel system vent box excess oil discharge method, can in vent box excess oil
When amount is more than predetermined value, oil draining system is first passed through first by most of fuel emission to main fuel tank, it is to avoid cause fuel oil to waste, then
When excess oil amount is less than predetermined value, by putting precipitation valve remaining excess oil is emitted；In addition, if excess oil amount is initial in vent box
When value is less than predetermined value, then directly puts precipitation valve and discharge remaining excess oil；Excess oil discharge method of the present invention passes through two kinds of oil extractions
Mode is applied in combination, it is possible to increase oil extraction efficiency high and cause oil extraction more it is clean thoroughly, moreover it is possible to avoid fuel oil from being sprayed onto ground
With attendant or pollution surrounding environment, while reducing and opening the workload of lid is safeguarded.
Description of the drawings
Fig. 1 is that the installment state of the excess oil exhaust system of the one of embodiment of vent box excess oil discharge method of the present invention is shown
It is intended to；
Fig. 2 for the excess oil exhaust system of the one of embodiment of vent box excess oil discharge method of the present invention working condition
Schematic diagram.
Specific embodiment
Here exemplary embodiment will be illustrated in detail, its example is illustrated in the accompanying drawings.Explained below is related to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represent same or analogous key element.
As shown in Figure 1 to Figure 2, anti-wing fuel system vent box excess oil discharge side under the large aircraft that the present invention is provided
Method, comprises the steps：
Whether step one, the excess oil amount judged in vent box 1 are less than an excess oil predetermined value, if it is not, then being walked
Rapid two；Otherwise, step 3 is carried out.
Step 2, the fuel oil in vent box 1 is delivered to the combustion in main fuel tank 8, in vent box 1 by oil draining system
When oil mass is less than excess oil predetermined value, control oil draining system quits work, and then carries out step 3.
Step 3, by opening putting for the bottom of vent box 1 valve 3 is precipitated, and carrys out remaining fuel oil in drain steps two, until sentencing
When the remaining fuel emission that breaks is complete, precipitation valve 3 is put in closing.
Anti- wing fuel system vent box excess oil discharge method under the large aircraft of the present invention, can be remaining in vent box 1
When oil mass is more than predetermined value, oil draining system is first passed through first by most of fuel emission to main fuel tank 8, it is to avoid cause fuel oil wave
Take, then when excess oil amount is less than predetermined value, by putting precipitation valve 3 remaining excess oil is emitted；In addition, if remaining in vent box 1
It is when oil mass initial value is less than predetermined value, then direct to discharge remaining excess oil by putting precipitation valve 3.Excess oil discharge method of the present invention
Be applied in combination by two kinds of oil extraction modes, it is possible to increase oil extraction efficiency high and cause oil extraction more it is clean thoroughly, moreover it is possible to avoid combustion
Oil is sprayed onto with ground maintenance personnel or pollutes surrounding environment, while reduce opening the workload for safeguarding lid.
Further, in one the step of vent box excess oil discharge method of the present invention, can by various methods and measuring tool come
Judge the excess oil amount in vent box 1.In the present embodiment, be by being arranged on vent box 1 in magnetic oil ruler 2 judging vent box
Excess oil amount in 1.Magnetic oil ruler 2 can be known various suitable dipstick structures, and concrete scale, passes through on internal dipstick
Scale oil amount determination is how many.During operation, can be inserted in the flat recess of magnetic oil ruler 2 by screw driver, jack-up is simultaneously rotated by 90 ° retrogressing
Go out screw driver, now, the dipstick of magnetic oil ruler 2 falls down (change that its working condition may be referred in Fig. 1 to Fig. 2) automatically, have
Body structure and principle are repeated no more.
In one the step of vent box excess oil discharge method of the present invention, excess oil predetermined value is preferably 10kg.
In one the step of vent box excess oil discharge method of the present invention in the step 2, oil draining system can adopt many
Kind of suitable structure, for example, be directly arranged on oil feed pump in vent box 1, and the oil-out of oil feed pump is connected to main fuel tank 8.Especially
As depicted in figs. 1 and 2, in the present embodiment, oil draining system includes the electronic oil feed pump 7 being arranged in main fuel tank 8 and arranges
Oil return jet pump 5 in vent box 1.
Oil return jet pump 5 is known various suitable jet pumps, generally has dynamic head piece, inlet port and oil-out,
Concrete injection principle is repeated no more.Oil return jet pump 5 is arranged on inside vent box 1, and its oil-out is connected by pipeline with main fuel tank 7
It is logical.
Electronic oil feed pump 7 can be known various suitable oil pumps, generally include oil-in and oil-out.Electronic fuel feeding
Pump 7 is arranged on inside main fuel tank 8, and its oil-out is connected by pipeline with the dynamic head piece of oil return jet pump 5 so that electronic oil feed pump
7 as oil return jet pump 5 dynamic stream source.Controlling oil return jet pump 5 by controlling electronic oil feed pump 7 and working or stop will be logical
Fuel oil in gas tank 1 is delivered in main fuel tank 1 or stops oil transportation.Further, in the present embodiment, preferably electronic oil feed pump 7 is adopted
It is to be used for the oil feed pump for aircraft engine fuel feeding in main fuel tank 8, can be with further reduction overall weight.Specifically, electricity
The oil-out of dynamic oil feed pump 7 splits into the first pipeline road and the second pipeline road by three phase connection.Wherein, the first petroleum pipeline
Road is connected with the dynamic head piece of oil return jet pump 5, and the second pipeline road is connected to aircraft engine.
Above-mentioned oil draining system can also include controller (not shown), and controller can be various suitable structures, for example
Can be aircraft computer, PLC control devices, hand switch etc., for controlling being turned on and off for electronic oil feed pump 7, so as to control
Oil return jet pump 5 works.
In above-mentioned oil draining system, return check valve 4, and return check valve 4 are provided with the inlet port of oil return jet pump 5
Import be preferably attached to aircraft cruising condition lower vent box 1 lower, to improve oil spilling organic efficiency.Return check valve
4 effect is, when electronic oil feed pump 7 does not work, prevents the fuel oil of main fuel tank 8 by the dynamic head piece of oil return jet pump 5 and fuel-displaced
Mouth flows back to vent box 1.Equally, arrange between the first pipeline road of electronic oil feed pump 7 and the dynamic head piece of oil return jet pump 5
There is stream check valve 6, in order to avoid in the failure of electronic oil feed pump 7, engine suction oil condition, by oil return jet pump 5
Dynamic flow tube road gas in vent box 1 is drawn into into engine, affect engine work.
In three the step of vent box excess oil discharge method of the present invention, be by it is known match put deposition tool 9
To control to put precipitation valve 3, and Fuel Remained in step 2 is discharged in the oil holder 10 for putting precipitation valve bottom.
In three the step of vent box excess oil discharge method of the present invention, the oil discharged in precipitation valve is put is in oil droplet shape, and
When speed is less than 10 drops/min, excess oil discharge (overwhelming majority is excluded) completely is judged.
The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, the change or replacement that can be readily occurred in, all should
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be with the scope of the claims
It is accurate.
Claims (6)
1. anti-wing fuel system vent box excess oil discharge method under a kind of large aircraft, it is characterised in that comprise the steps：
Whether step one, the excess oil amount judged in vent box are less than an excess oil predetermined value, if it is not, then carrying out step 2；
Otherwise, step 3 is carried out；
Step 2, is delivered to the fuel oil in the vent box in main fuel tank by oil draining system, in the vent box
When fuel quantity is less than the excess oil predetermined value, controls the oil draining system and quit work, then carry out step 3；
Step 3, by open the vent box bottom put precipitation valve to discharge the step 2 in remaining fuel oil, until
When judging that the remaining fuel emission is complete, described in closing precipitation valve is put.
2. vent box excess oil discharge method according to claim 1, it is characterised in that be to pass through in the step one
Excess oil amount during the magnetic oil ruler in the vent box is arranged on to judge the vent box.
3. vent box excess oil discharge method according to claim 1 and 2, it is characterised in that the excess oil predetermined value is
10kg。
4. vent box excess oil discharge method according to claim 3, it is characterised in that in the step 2, the row
Oil system includes the electronic oil feed pump being arranged in the main fuel tank and the oil return jet pump being arranged in the vent box, institute
The oil-out for stating electronic oil feed pump is connected by pipeline with the dynamic head piece of the oil return jet pump；
In the step 2, the oil return jet pump is controlled by institute by controlling the electronic fuel feeding pump work or stopping
State the fuel oil in vent box and be delivered in the main fuel tank or stop oil transportation.
5. vent box excess oil discharge method according to claim 4, it is characterised in that be to pass through in the step 3
Put deposition tool control it is described put precipitation valve, and remaining excess oil in the step 2 be discharged into described put precipitation valve bottom
Oil holder in.
6. vent box excess oil discharge method according to claim 5, it is characterised in that in the step 3, when described
When the oil for putting discharge in precipitation valve is less than 10 drops/min in oil droplet shape, and speed, judge that the remaining fuel emission is complete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510346462.3A CN104960670B (en) | 2015-06-23 | 2015-06-23 | Residual-oil discharging method for ventilation cabinet of fuel system of negative dihedral wing of large aircraft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510346462.3A CN104960670B (en) | 2015-06-23 | 2015-06-23 | Residual-oil discharging method for ventilation cabinet of fuel system of negative dihedral wing of large aircraft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104960670A CN104960670A (en) | 2015-10-07 |
| CN104960670B true CN104960670B (en) | 2017-04-19 |
Family
ID=54214817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510346462.3A Active CN104960670B (en) | 2015-06-23 | 2015-06-23 | Residual-oil discharging method for ventilation cabinet of fuel system of negative dihedral wing of large aircraft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104960670B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109319159B (en) * | 2018-11-28 | 2024-03-15 | 江西荣力航空工业有限公司 | Residual oil collecting and discharging device of helicopter engine |
| CN111907722B (en) * | 2019-05-09 | 2022-11-04 | 四川旭静天臣科技有限公司 | Oil unloading method for oil-electricity hybrid aircraft |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870365B (en) * | 2010-05-13 | 2013-04-10 | 哈尔滨飞机工业集团有限责任公司 | Pilot control overflowing system for airplane pressure fuel filling |
| US8950186B2 (en) * | 2011-09-11 | 2015-02-10 | The Boeing Company | Speed card-controlled override fuel pump assist |
| CN102673794B (en) * | 2012-06-08 | 2015-08-26 | 中国航空工业集团公司西安飞机设计研究所 | A kind of oil feed pump that adopts is as the aerial jettison gear of power |
| CN102689692B (en) * | 2012-06-08 | 2014-08-06 | 中国航空工业集团公司西安飞机设计研究所 | Aerial emergency oil drainage control system and control method for airplane |
| US9038955B2 (en) * | 2012-07-26 | 2015-05-26 | Honda Patents & Technologies North America, Llc | Fuel transfer system controlled by float valves |
-
2015
- 2015-06-23 CN CN201510346462.3A patent/CN104960670B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104960670A (en) | 2015-10-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104960670B (en) | Residual-oil discharging method for ventilation cabinet of fuel system of negative dihedral wing of large aircraft | |
| CN106111389B (en) | Optical cable water-blocking cable cream is atomized intermittent spray device | |
| CN204239061U (en) | Automatic fuelling device in the operation of minitype diesel oil engine group | |
| CN104943869B (en) | Ventilation tank residual fuel drainage system of reversed wing fuel system of large aircraft | |
| CN103953593B (en) | Hydraulic control device is pushed away for boats and ships adjustable pitch side | |
| CN101761394A (en) | Negative overload resistant double-chamber oil supply device and method thereof | |
| CN105741983B (en) | It is a kind of can saving water resource cooling-lubricant spraying system | |
| CN205716371U (en) | A kind of three arm rock drilling jumbo rock drill oil mist systems | |
| CN203783680U (en) | Biaxial rotating type oil absorption ventilation device for aerobatics | |
| CN106286486A (en) | A kind of Multifunctional navigation Hydraulic service car | |
| WO2016026373A1 (en) | Power-driven fuel-adding oil tank cover and oil delivery method thereof | |
| CN205805647U (en) | Lubricating oil feeds and cleaning device automatically | |
| CN206027994U (en) | Optical cable hinders water -blocked cable cream atomizing intermittent type spraying device | |
| CN105927312A (en) | Lubricating oil automatic supplying and cleaning device and supplying and cleaning method | |
| CN104648679A (en) | Oil sump tank layout structure of aviette | |
| CN202046196U (en) | Diesel oil tank suitable for oil gun with large caliber | |
| CN203906143U (en) | Fuel oil supply pipeline for main engine of platform oil supply boat | |
| CN206680180U (en) | Diesel generating set automatic oiling control device | |
| CN208587720U (en) | A kind of lubricant distributor | |
| CN203939578U (en) | A kind of carbon on engine and ternary catalyzing unit automatic flushing device | |
| CN101580130B (en) | Aircraft anti-icing fuel system suitable for high-altitude low temperature environment | |
| CN207607659U (en) | A kind of aircraft refuelling pipe | |
| CN206609617U (en) | Fore bearing lubrication experiment device | |
| CN205907023U (en) | Oil gun | |
| CN205313139U (en) | Environment -friendly oil moisture is disembarked |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |