CN110466786B - Airborne pressure-maintaining oil tank - Google Patents
Airborne pressure-maintaining oil tank Download PDFInfo
- Publication number
- CN110466786B CN110466786B CN201910767283.5A CN201910767283A CN110466786B CN 110466786 B CN110466786 B CN 110466786B CN 201910767283 A CN201910767283 A CN 201910767283A CN 110466786 B CN110466786 B CN 110466786B
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- Prior art keywords
- oil tank
- fuel
- pipe
- fuel oil
- piston
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- 239000003921 oil Substances 0.000 claims abstract description 47
- 239000000295 fuel oil Substances 0.000 claims abstract description 38
- 230000004888 barrier function Effects 0.000 claims abstract description 5
- 239000002828 fuel tank Substances 0.000 claims description 24
- 238000007667 floating Methods 0.000 claims description 20
- 238000007493 shaping process Methods 0.000 claims description 16
- 230000000903 blocking effect Effects 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 5
- 238000009423 ventilation Methods 0.000 claims description 5
- 230000001174 ascending effect Effects 0.000 claims description 3
- 239000000446 fuel Substances 0.000 abstract description 30
- 239000007788 liquid Substances 0.000 abstract description 6
- 230000009467 reduction Effects 0.000 abstract description 3
- 239000011435 rock Substances 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D37/00—Arrangements in connection with fuel supply for power plant
- B64D37/02—Tanks
- B64D37/06—Constructional adaptations thereof
- B64D37/10—Constructional adaptations thereof to facilitate fuel pressurisation
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
Abstract
The invention relates to the technical field of aerospace equipment, and discloses an airborne pressure maintaining oil tank which comprises a fuel oil tank, wherein a space adjusting piece matched with an oil bin is fixedly arranged on the inner wall of the top of each oil bin in the fuel oil tank, and the volume of the space adjusting piece is adjustable. This machine carries pressurize oil tank, cover most fuel liquid level through the barrier plate, and further cushion the fuel through the space adjustment spare and rock the impact force that produces, the influence of fuel impact in the oil tank has been reduced by a wide margin, the life of oil tank has been improved, simultaneously because fuel impact influences lessly in the oil tank, the quantity of cancellation or reduction baffle that can great degree in the design, and then reduced because the baffle encloses the fuel volume and the residual water volume that can not emit that the fender produced, during high altitude flight, seal the fuel oil tank, along with the fuel reduces, the space in the fuel oil tank is occupied in the increase of space adjustment spare volume, consequently, atmospheric pressure in the fuel oil tank can not obviously reduce, aircraft high altitude flight time has been increased.
Description
Technical Field
The invention relates to the technical field of aerospace and aviation equipment, in particular to an airborne pressure-maintaining oil tank.
Background
Referring to fig. 1, in order to reduce the influence of fuel sloshing in the fuel tank when the fuel tank of the aircraft is emptied due to fuel consumption, a plurality of parallel partition plates are arranged in the main fuel tank to partition the fuel tank into a plurality of small compartments, fuel flows between the compartments in a one-way mode, meanwhile, in order to ensure that the range of the air pressure in the fuel tank is maintained in a reasonable range, the fuel tank needs to be communicated with external air through a ventilation system, and in high altitude, the ventilation system needs to be closed to be connected with an external air source to maintain the air pressure in the fuel tank.
Although the oil tank is divided into a plurality of oil bins by the partition plates, when the oil bin is not full of fuel oil and shakes, because the fuel amount in the oil bin is less, the influence caused by shaking can be maintained in a smaller range, but the fuel oil in the small oil tank still exists, although the overall influence on the airplane is reduced to be small enough, the influence on the local part still exists, particularly, the vibration generated during shaking of the oil tank of the airplane easily causes metal fatigue, the service life of the oil tank is shortened, on the other hand, the use amount of the small partition plates is more, the oil discharging positions in the oil tank are more, the utilization rate of the fuel oil is reduced, meanwhile, the residual oil and the residual water amount are maintained in a higher range, bacteria are easily bred, the corrosion speed of the inner wall of the oil tank is increased, the service life of the oil tank is further shortened, and the maintenance frequency is improved.
In view of cost, some aircraft fuel tanks commonly used for high-altitude flight are not provided with an external air source, when short-time high-altitude flight is needed, the fuel tanks are closed to maintain the air pressure in the fuel tanks, low-pressure fuel oil boiling is avoided, but the air pressure in the fuel tanks is gradually reduced to an inappropriate low-pressure range along with the increase of fuel consumption, the height must be reduced to maintain the air pressure in the fuel tanks at the moment, the high-altitude flight time of the aircraft is limited, and under some conditions, for example, when the low-altitude severe weather is spanned by high-altitude flight, the high-altitude aircraft cannot be spanned due to too short time.
Disclosure of Invention
Aiming at the defects of the background technology, the invention provides the onboard pressure maintaining oil tank which has the advantage of automatic space adjustment and solves the problems in the background technology.
The invention provides the following technical scheme: the utility model provides an airborne pressurize oil tank, includes the fuel oil tank, every bunker top inner wall fixed mounting in the fuel oil tank has the space control spare with the bunker adaptation, the space control spare volume is adjustable, the middle part fixed mounting of space control spare has flexible pipe, the bottom fixedly connected with floating block and the board of stopping of flexible pipe, the space control spare passes through the outside air-breather system of intercommunication.
Preferably, the side wall of the fuel oil tank is provided with a pressure sensor and a communicating pipe with a shut-off valve, and the side wall of the space adjusting part is provided with a one-way vent pipe.
Preferably, the density of the floating block is less than that of the fuel oil, and the buoyancy generated by the floating block when the floating block is completely immersed in the fuel oil just can support the pressure of the barrier plate.
Preferably, a shaping piece is arranged at the folding position of the space adjusting piece, the shaping piece comprises a shaping ring matched with the shape of an oil bin of the fuel oil tank and a support ring with a circular middle part, and the support ring and the shaping ring are fixedly connected through a support rod.
Preferably, flexible pipe runs through fuel tank's lateral wall, and seals between flexible pipe and the fuel tank, flexible pipe cup joints the piston pipe including a plurality of activities, and seals through the piston between two piston pipes, and is the thinnest the piston pipe runs through the kicking block, and internally mounted has the ascending check valve of flow direction, and is outermost the blow-down valve is installed to the piston pipe.
Preferably, the check valve and the discharge valve are both disposed on an outer side wall of the outermost piston tube.
The invention has the following beneficial effects:
1. this machine carries pressurize oil tank, cover most fuel liquid level through the barrier plate, and further cushion the fuel through the space adjustment spare and rock the impact force that produces, the influence of fuel impact in the oil tank has been reduced by a wide margin, the life of oil tank has been improved, on the other hand, because fuel impact influences lessly in the oil tank, cancellation that can great degree or the quantity that reduces the baffle in the design, and then reduced because the baffle encloses the fuel quantity and the residual water volume that can not emit that the fender produced, reduce bacterial growing when improving the fuel utilization ratio, and then reduce the corruption that the bacterium produced, further improve oil tank life and reduce the maintenance frequency.
2. This machine carries pressurize oil tank, during the high altitude flight, seals the fuel oil tank, because along with the fuel reduction, the increase of space control spare volume occupies the space in the fuel oil tank, consequently atmospheric pressure in the fuel oil tank can not obviously reduce, has increased aircraft high altitude flight time by a wide margin, the reply ability when having improved the aircraft special case.
Drawings
FIG. 1 is a schematic diagram of a prior art configuration of the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic view of a telescopic tube according to the present invention;
FIG. 4 is a schematic view of a shaped member of the present invention;
fig. 5 is a schematic view of a telescopic tube according to a second embodiment of the present invention.
In the figure: 1. a fuel tank; 2. a space adjusting member; 3. floating blocks; 4. a telescopic pipe; 41. a piston tube; 42. a one-way valve; 43. a discharge valve; 5. a damming board; 6. a breather pipe; 7. a one-way vent pipe; 8. a communicating pipe; 9. a pressure sensor; 10. a shaping piece; 101. a stationary ring; 102. a support ring; 103. a support rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 2-5, an onboard pressure-maintaining oil tank comprises a fuel oil tank 1, a space adjusting member 2 adapted to an oil bin is fixedly installed on the inner wall of the top of each oil bin in the fuel oil tank 1, the volume of the space adjusting member 2 is adjustable, the space adjusting member 2 occupies a space where oil is reduced as the oil level decreases, a telescopic pipe 4 is fixedly installed in the middle of the space adjusting member 2, a floating block 3 and a blocking plate 5 are fixedly connected to the bottom end of the telescopic pipe 4, the floating block 3 moves along with the liquid level of the fuel oil to drive the telescopic pipe 4 and the blocking plate 5 to move, so as to expand the volume of the space adjusting member 2 and occupy a space where the fuel oil is consumed and released, on the other hand, the blocking plate 5 is fixed by the telescopic pipe 4 to limit the movement of the blocking plate 5, so as to avoid the blocking plate 5 from shaking, the space adjusting member 2 is communicated with an external ventilation system through a vent pipe 6, so as to suck external air when the volume of the space adjusting member 2 is expanded, an excessive pressure difference between the space adjusting member 2 and the fuel tank 1 is avoided.
Wherein, the lateral wall of fuel tank 1 is equipped with pressure sensor 9 and communicating pipe 8 that has the trip valve, and the lateral wall of space control spare 2 is equipped with one-way breather pipe 7, and when the aircraft was in high altitude flight, the air current that cuts fuel tank 1 through communicating pipe 8 flowed, makes fuel tank 1 seal, when 8 trouble unable recovery gas flows in communicating pipe simultaneously, guarantees through one-way breather pipe 7 and breather pipe 6 that admit air normally, examines and controls the pressure condition in the oil tank through pressure sensor 9, adjusts aircraft height at any time.
The density of the floating block 3 is smaller than that of the fuel oil, the buoyancy generated when the floating block 3 is completely immersed in the fuel oil can just support the pressure of the barrier plate 5, the height of the floating block 3 is reduced along with the reduction of the height of the fuel oil liquid level, and then the telescopic pipe 4 and the space adjusting piece 2 are driven to change, and the volume of the space adjusting piece 2 is increased.
The folding position of the space adjusting piece 2 is provided with a shaping piece 10, the shaping piece 10 comprises a shaping ring 101 matched with the shape of an oil bin of the fuel oil tank 1 and a middle circular support ring 102, the support ring 102 and the shaping ring 101 are fixedly connected through a support rod 103, the deformation of the space adjusting piece 2 is determined through the shaping piece 10, and meanwhile, the shaping piece 10 supports the space adjusting piece 2 to avoid the space adjusting piece 2 from collapsing under pressure.
Wherein, flexible pipe 4 runs through the lateral wall of fuel tank 1, and seal between flexible pipe 4 and the fuel tank 1, flexible pipe 4 cup joints piston pipe 41 including a plurality of activities, and through piston seal between two piston pipes 41, thinnest piston pipe 41 runs through floating block 3, and internally mounted has the ascending check valve 42 of flow direction, discharge valve 43 is installed to outermost piston pipe 41, when piston pipe 41 extends along with floating block 3, absorb the fuel to flexible pipe 4 inside, the length of fixed flexible pipe 4, and then avoid space adjusting part 2 and stopping board 5 to rock and shake along with the fuel, release flexible pipe 4 interior fuel through discharge valve 43 when refueling needs, and along with fuel increase in the oil tank, under the effect of floating block 3 buoyancy, flexible pipe 4 and space adjusting part 2 resume the original state.
Example two
Under the condition that other conditions are kept unchanged, the check valve 42 and the exhaust valve 43 are arranged on the outer side wall of the piston pipe 41 on the outermost side, the telescopic pipe 4 does not penetrate through the fuel oil tank 1 and the floating block 3 any more, when the piston pipe 41 extends, air in the space adjusting piece 2 is unidirectionally sucked through the check valve 42, the piston pipe 41 is shortened through air limitation, the shaking amplitude of the space adjusting piece 2 and the shaping piece 10 along with fuel oil is reduced, when oil needs to be added, the exhaust valve 43 is opened to release the air in the telescopic pipe 4, and compared with the first embodiment, the waste of the fuel oil sucked in the telescopic pipe 4 is reduced.
The working principle of the invention is as follows:
along with the consumption of fuel in the fuel tank 1, the floating block 3 reduces the height along with the fuel liquid level, the telescopic pipe 4 is driven to extend and the blocking plate 5 descends, the space adjusting part 2 is further unfolded to occupy the space released by most of the fuel, meanwhile, the external space is sucked through the vent pipe 6, the pressure difference between the space adjusting part 2 and the fuel tank 1 is reduced, when the telescopic pipe 4 extends, hydraulic oil or air is sucked in one direction through the check valve 42, the length of the telescopic pipe 4 is fixed, the position of the blocking plate 5 is further fixed, when the fuel shakes, most of the fuel liquid level is blocked by the blocking plate 5, only a small amount of the fuel flows through the side face of the blocking plate 5, and the small amount of the flowing fuel is further buffered through folds of the space adjusting part 2, so that the adverse effect caused by fuel shaking is reduced.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides an airborne pressurize oil tank, includes fuel tank (1), its characterized in that: a space adjusting piece (2) matched with the oil bin is fixedly installed on the inner wall of the top of each oil bin in the fuel oil tank (1), the volume of the space adjusting piece (2) is adjustable, a telescopic pipe (4) is fixedly installed in the middle of the space adjusting piece (2), the bottom end of the telescopic pipe (4) is fixedly connected with a floating block (3) and a blocking plate (5), and the space adjusting piece (2) is communicated with an external ventilation system through a ventilation pipe (6); the side wall of the fuel oil tank (1) is provided with a pressure sensor (9) and a communicating pipe (8) with a shut-off valve, and the side wall of the space adjusting piece (2) is provided with a one-way vent pipe (7).
2. An on-board pressure maintaining oil tank as claimed in claim 1, wherein: the density of the floating block (3) is less than that of the fuel oil, and the buoyancy generated by the floating block (3) when the floating block is completely immersed in the fuel oil can just support the pressure of the barrier plate (5).
3. An on-board pressure maintaining oil tank as claimed in claim 1, wherein: the folding position of the space adjusting piece (2) is provided with a shaping piece (10), the shaping piece (10) comprises a shaping ring (101) matched with the shape of an oil bin of the fuel oil tank (1) and a middle circular support ring (102), and the support ring (102) is fixedly connected with the shaping ring (101) through a support rod (103).
4. An on-board pressure maintaining oil tank as claimed in claim 1, wherein: the lateral wall of fuel oil tank (1) is run through in flexible pipe (4), and seals between flexible pipe (4) and fuel oil tank (1), piston pipe (41) is cup jointed including a plurality of activities in flexible pipe (4), and seals through the piston between two piston pipes (41), and is the thinnest piston pipe (41) run through floating block (3), and internally mounted has ascending check valve (42) of flow direction, and is outermost discharge valve (43) are installed in piston pipe (41).
5. An on-board pressure maintaining oil tank as claimed in claim 1, wherein: the telescopic pipe (4) penetrates through the side wall of the fuel oil tank (1), the telescopic pipe (4) and the fuel oil tank (1) are sealed, the telescopic pipe (4) is sleeved with the piston pipes (41) in a plurality of movable modes, the two piston pipes (41) are sealed through the pistons, and the outermost side of the piston pipes (41) is provided with the check valve (42) and the discharge valve (43) on the outer side wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910767283.5A CN110466786B (en) | 2019-08-20 | 2019-08-20 | Airborne pressure-maintaining oil tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910767283.5A CN110466786B (en) | 2019-08-20 | 2019-08-20 | Airborne pressure-maintaining oil tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110466786A CN110466786A (en) | 2019-11-19 |
| CN110466786B true CN110466786B (en) | 2021-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910767283.5A Active CN110466786B (en) | 2019-08-20 | 2019-08-20 | Airborne pressure-maintaining oil tank |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114771848B (en) * | 2022-06-20 | 2022-09-13 | 中国飞机强度研究所 | Water hammer effect suppression system and method for airplane structure impact resistance test |
| CN116353836B (en) * | 2023-04-19 | 2023-09-29 | 南京儒一航空机械装备有限公司 | Pressure maintaining oil tank for aircraft |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104176262A (en) * | 2014-09-15 | 2014-12-03 | 北京航空航天大学 | Pressure-maintaining oil tank of aircraft |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2998268B1 (en) * | 2012-11-19 | 2015-07-17 | Eurocopter France | FUEL STORAGE DEVICE, AIRCRAFT AND METHOD |
| CN204480848U (en) * | 2015-03-07 | 2015-07-15 | 孙艺夫 | Outer oily vertical metal bellow oil conservator |
| CN105460118B (en) * | 2015-12-05 | 2018-08-10 | 重庆市成吉思机械制造有限公司 | Motorcycle gas-filled anti-shake fuel tank |
| US10465609B2 (en) * | 2015-12-18 | 2019-11-05 | Pratt & Whitney Canada Corp. | Engine fuel system for use with composite aircraft |
| CN107298181A (en) * | 2017-06-29 | 2017-10-27 | 成都鑫晨航空科技有限公司 | A kind of novel airborne main fuel tank |
| CN207374686U (en) * | 2017-11-03 | 2018-05-18 | 西安蓝悦航天科技有限公司 | A kind of dynamic unmanned sump medicine-chest of oil integrates fuselage |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104176262A (en) * | 2014-09-15 | 2014-12-03 | 北京航空航天大学 | Pressure-maintaining oil tank of aircraft |
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Effective date of registration: 20210714 Address after: 310000 agricultural and commercial building xn3-013, Linjiang street, Qiantang New District, Hangzhou City, Zhejiang Province Applicant after: Hangzhou Wendian Communication Technology Co.,Ltd. Address before: 310016 No.89, Qingnian Wenming street, Jiubao Town, Jianggan District, Hangzhou City, Zhejiang Province Applicant before: Tao Shuifang |
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Effective date of registration: 20241028 Address after: Room 408-8, 4 / F, building 2, Haichuang technology center, Cangqian street, Yuhang District, Hangzhou City, Zhejiang Province, 311100 Patentee after: HANGZHOU ZHUILIE TECHNOLOGY Co.,Ltd. Country or region after: China Address before: 310000 agricultural and commercial building xn3-013, Linjiang street, Qiantang New District, Hangzhou City, Zhejiang Province Patentee before: Hangzhou Wendian Communication Technology Co.,Ltd. Country or region before: China |