CN111114802B - Active and passive switching oil supply system for aircraft - Google Patents
Active and passive switching oil supply system for aircraft Download PDFInfo
- Publication number
- CN111114802B CN111114802B CN201911402038.0A CN201911402038A CN111114802B CN 111114802 B CN111114802 B CN 111114802B CN 201911402038 A CN201911402038 A CN 201911402038A CN 111114802 B CN111114802 B CN 111114802B
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- oil
- tank
- electromagnetic valve
- overload
- supply conversion
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 47
- 239000003921 oil Substances 0.000 claims description 259
- 239000000295 fuel oil Substances 0.000 claims description 10
- 230000000740 bleeding effect Effects 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 3
- 230000001502 supplementing effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 5
- 230000005484 gravity Effects 0.000 abstract description 5
- 239000000446 fuel Substances 0.000 description 12
- 239000002828 fuel tank Substances 0.000 description 3
- 239000010763 heavy fuel oil Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 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
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
Abstract
The invention provides an active and passive switching oil supply system for an aircraft, which comprises: the oil level signal device comprises a front oil tank, a rear oil tank, an overload tank, an oil level annunciator, an air discharge electromagnetic valve, an oil supply conversion electromagnetic valve, an oil passage and an air discharge pipeline; the front oil tank and the rear oil tank are respectively connected with two oil path inlets of the oil supply conversion electromagnetic valve through the oil through pipe paths, and an oil path outlet is connected with the overload tank; an upper oil path inlet and a lower oil path inlet of the oil level annunciator are respectively communicated with the upper end and the middle end of the overload box through oil communicating pipelines; the air bleed electromagnetic valve is connected with the oil level annunciator; the air release pipeline is connected with the air release electromagnetic valve. The invention solves the problem that the aircraft still needs to continuously supply oil to the engine in the long-time nose-down gliding process at the tail section with a large attack angle, meets the requirement that the oil supply sequence of an oil tank needs to be switched in real time to ensure the change of the gravity center in the flying process of the aircraft, and ensures the 100% success of a flight test.
Description
Technical Field
The invention belongs to the technical field of aircraft fuel systems, and particularly relates to an active and passive switching fuel supply system for an aircraft.
Background
Along with the continuous improvement of new generation weapon system performance and operation requirement, compare with traditional model, except possessing conventional fuel system function, its fuel system still need possess two major functions: firstly, the oil is continuously supplied to the engine in the long-time dive and gliding process of the tail section with a large attack angle; and secondly, the sequence of the oil supply tanks needs to be switched in real time according to needs in the whole flight process so as to ensure that the change of the gravity center meets the use requirements.
The aircraft generally keeps the elevation angle state during flight, so the fuel taking port of the fuel tank is generally arranged at the rear lower part to pursue the weight of residual fuel as little as possible, but when the tail end large attack angle dives downwards for a long time, fuel can gather at the front part of the fuel tank under the condition that the residual fuel is few, so that the fuel taking port can not take the fuel, and therefore, the problem of continuous fuel taking when the tail end large attack angle dives downwards for a long time needs to be solved by adopting a special design.
In order to effectively control the gravity center change and improve the oil loading weight, a modern aircraft mostly adopts a multi-oil-tank split-tank design, in the prior art, a fuel oil system generally adopts a multi-oil-tank sequential oil supply method, the multi-oil-tank oil supply sequence is designed and determined according to the gravity center change requirement during oil tank design, and the method is simple and reliable in principle, but cannot realize the function of switching the sequence of oil supply tanks in real time according to the use requirement.
Accordingly, there is a need in the art for improvements.
Disclosure of Invention
In order to solve the technical problem, the invention provides an active and passive switching oil supply system for an aircraft, which comprises:
the oil level signal device comprises a front oil tank, a rear oil tank, an overload tank, an oil level annunciator, an air discharge electromagnetic valve, an oil supply conversion electromagnetic valve, an oil passage and an air discharge pipeline;
the front oil tank and the rear oil tank are respectively connected with two oil path inlets of the oil supply conversion electromagnetic valve through the oil communicating pipeline, an oil path outlet of the oil supply conversion electromagnetic valve is connected with the overload tank through the oil communicating pipeline, and the oil supply conversion electromagnetic valve is used for controlling and selecting the front oil tank or the rear oil tank to supply oil to the overload tank;
the upper part and the bottom of the oil level annunciator are respectively provided with an oil path inlet, the upper oil path inlet of the oil level annunciator is communicated with the upper end of the overload box through an oil communicating pipeline, the bottom oil path inlet of the oil level annunciator is communicated with the middle part of the overload box through an oil communicating pipeline, and the oil level annunciator acquires oil level information of the overload box through oil paths on the upper part and the bottom of the oil level annunciator and judges the volume of available fuel oil in the overload box and the anti-negative overload time;
the air bleed electromagnetic valve is connected with the oil level annunciator, and discharges gas in the overload tank after the oil level annunciator detects an empty oil signal in the overload tank, so that the front oil tank or the rear oil tank supplies oil to the overload tank in a supplementing manner;
the air release pipeline is connected with the air release electromagnetic valve and used for discharging air of the air release electromagnetic valve.
In another embodiment of the above active-passive switching oil supply system for an aircraft according to the present invention, the oil supply switching solenoid valve is a two-position three-way solenoid valve;
when the oil supply conversion electromagnetic valve supplies power, an oil path inlet connected with the front oil tank of the oil supply conversion electromagnetic valve is opened, oil is supplied to the oil supply conversion electromagnetic valve from the front oil tank, and an oil path inlet connected with the rear oil tank of the oil supply conversion electromagnetic valve is closed;
when the oil supply conversion electromagnetic valve does not supply power, an oil path inlet connected with the rear oil tank of the oil supply conversion electromagnetic valve is opened, oil is supplied to the oil supply conversion electromagnetic valve by the rear oil tank, and an oil path inlet connected with the front oil tank of the oil supply conversion electromagnetic valve is closed.
In another embodiment of the above active-passive switching oil supply system for an aircraft according to the present invention, the connection manner of the bleed solenoid valve and the oil level annunciator includes a bleed line connection and an electrical connection;
the air discharge pipeline is connected in a mode that the air discharge electromagnetic valve discharges the gas in the overload tank through the oil level annunciator;
and the electrical connection mode is used for sending a starting instruction to the air bleeding electromagnetic valve when the oil level annunciator detects that the overload box is internally provided with an empty oil signal, so that the air bleeding electromagnetic valve is opened to discharge the gas in the overload box.
In another embodiment of the above active-passive switching oil supply system for an aircraft according to the present invention, the oil level annunciator is electrically connected to the oil supply switching solenoid valve;
when the oil level annunciator monitors that the overload tank is an empty oil signal, the oil path inlet of the current oil supply conversion electromagnetic valve cannot meet the requirement is judged, and the oil supply conversion electromagnetic valve is controlled to replace the oil path inlet.
The active and passive switching oil supply system for the aircraft solves the problem that the aircraft still needs to continuously supply oil to an engine in the long-time dive gliding process at the tail section with a large attack angle, meets the requirement that the oil supply sequence of an oil tank needs to be switched in real time in the flying process of the aircraft to ensure the change of the gravity center, ensures the 100% success of a flight test, overcomes the defect of high residual oil rate of a large flat oil tank, greatly reduces the residual oil rate of a fuel oil system, and plays a key role in improving the flight distance of the aircraft.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of an active and passive switching oil supply system for an aircraft according to the present invention.
In the figure, a front oil tank 1, a rear oil tank 2, an overload tank 3, an oil level annunciator 4, a gas discharge electromagnetic valve 5, an oil supply conversion electromagnetic valve 6, an oil passage 7 and a gas discharge pipeline 8 are arranged.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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.
The active and passive switching oil supply system for the aircraft provided by the invention is described in more detail in the following with reference to the attached drawings and embodiments.
As shown in fig. 1, the active-passive switching oil supply system for an aircraft includes:
the oil level control system comprises a front oil tank 1, a rear oil tank 2, an overload tank 3, an oil level annunciator 4, an air bleed solenoid valve 5, an oil supply conversion solenoid valve 6, an oil through pipeline 7 and an air bleed pipeline 8;
the front oil tank 1 and the rear oil tank 2 are respectively connected with two oil path inlets of the oil supply conversion electromagnetic valve 6 through the oil passage 7, an oil path outlet of the oil supply conversion electromagnetic valve 6 is connected with the overload tank 3 through the oil passage 7, and the oil supply conversion electromagnetic valve 6 is used for controlling and selecting the front oil tank 1 or the rear oil tank 2 to supply oil to the overload tank 3; the oil way outlet of the rear oil tank 2 is arranged at the rear lower part of the rear oil tank and mainly provides fuel oil when the aircraft flies at an elevation angle; an oil path outlet of the front oil tank 1 is arranged at the front lower part of the front oil tank, fuel oil is mainly supplied when the aircraft glides at a depression angle, particularly when the aircraft glides at the tail section of flight with less fuel oil and at a large depression angle, the fuel oil is accumulated at the foremost end, and the oil taking port is arranged at the front lower part to ensure that the continuous oil taking can be realized;
the upper part and the bottom of the oil level annunciator 4 are respectively provided with an oil path inlet, the upper oil path inlet of the oil level annunciator 4 is communicated with the upper end of the overload box 3 through an oil communicating pipeline 7, the bottom oil path inlet of the oil level annunciator 4 is communicated with the middle part of the overload box 3 through the oil communicating pipeline 7, the oil level annunciator 4 acquires oil level information of the overload box 3 through the oil paths on the upper part and the bottom of the oil level annunciator 4, and the volume of available fuel oil in the overload box 3 and the negative overload resisting time are judged;
the air bleed solenoid valve 5 is connected with the oil level annunciator 4, and after the oil level annunciator 4 detects an empty oil signal in the overload tank 3, the air bleed solenoid valve 5 exhausts the gas in the overload tank 3, so that the front oil tank 1 or the rear oil tank 2 supplies oil to the overload tank 3;
the air release pipeline 8 is connected with the air release electromagnetic valve 5 and is used for discharging air of the air release electromagnetic valve 5.
The oil supply conversion electromagnetic valve 6 is a two-position three-way electromagnetic valve;
when the oil supply conversion electromagnetic valve 6 supplies power, an oil path inlet of the oil supply conversion electromagnetic valve 6 connected with the front oil tank 1 is opened, the front oil tank 1 supplies oil to the oil supply conversion electromagnetic valve 6, and an oil path inlet of the oil supply conversion electromagnetic valve 6 connected with the rear oil tank 2 is closed;
when the oil supply conversion electromagnetic valve 6 does not supply power, an oil path inlet of the oil supply conversion electromagnetic valve 6 connected with the rear oil tank 2 is opened, oil is supplied to the oil supply conversion electromagnetic valve 6 from the rear oil tank 2, and an oil path inlet of the oil supply conversion electromagnetic valve 6 connected with the front oil tank 1 is closed.
The function of actively switching the oil supply paths of the front oil tank 1 and the rear oil tank 3 is realized by switching the oil supply switching electromagnetic valve 6.
The connection mode of the air bleed electromagnetic valve 5 and the oil level annunciator 4 comprises connection and electrical connection of an air bleed pipeline 8;
the air bleed pipeline is connected in a mode that the air bleed electromagnetic valve 5 exhausts the gas in the overload tank 3 through the oil level annunciator 4;
the electrical connection mode is used for sending a starting instruction to the air bleeding electromagnetic valve 5 when the oil level annunciator 4 detects that the overload box 3 is empty, so that the air bleeding electromagnetic valve 5 is opened, and the gas in the overload box 3 is discharged. Meanwhile, the fuel in the fuel tank can quickly fill the overload tank 3 under the action of pressure, so that the fuel is continuously supplied to the engine, and the passive switching fuel supply function is realized.
The oil level annunciator 4 is electrically connected with the oil supply conversion electromagnetic valve 6;
when the oil level annunciator 4 monitors that the overload tank 3 is an empty oil signal, the oil path inlet of the current oil supply conversion electromagnetic valve 6 cannot meet the requirement is judged, and the oil supply conversion electromagnetic valve 6 is controlled to replace the oil path inlet.
When the liquid level in the overload tank 3 is lower than the oil path inlet at the lower end of the oil level annunciator 4, the oil level annunciator 4 sends an empty oil signal to indicate that the overload tank 3 cannot take fuel oil from the current front oil tank 1 or the current rear oil tank 2, and the empty oil signal is used as a judgment condition to control the oil supply switching electromagnetic valve 5 to switch the oil supply tank, wherein the judgment condition of the empty oil signal is generally continuously effective within 3-5s, and the time is determined by the oil supply flow and the volume of the overload tank.
It will be evident to those skilled in the art that the embodiments of the present invention are not limited to the details of the foregoing illustrative embodiments, and that the embodiments of the present invention are capable of being embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the embodiments being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. Several units, modules or means recited in the system, apparatus or terminal claims may also be implemented by one and the same unit, module or means in software or hardware. The terms first, second, etc. are used to denote names, but not any particular order.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the embodiments of the present invention and not for limiting, and although the embodiments of the present invention are described in detail with reference to the above preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the embodiments of the present invention without departing from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (3)
1. An active-passive switching oil supply system for an aircraft, comprising:
the oil level signal device comprises a front oil tank, a rear oil tank, an overload tank, an oil level annunciator, an air discharge electromagnetic valve, an oil supply conversion electromagnetic valve, an oil passage and an air discharge pipeline;
the front oil tank and the rear oil tank are respectively connected with two oil path inlets of the oil supply conversion electromagnetic valve through the oil communicating pipeline, an oil path outlet of the oil supply conversion electromagnetic valve is connected with the overload tank through the oil communicating pipeline, and the oil supply conversion electromagnetic valve is used for controlling and selecting the front oil tank or the rear oil tank to supply oil to the overload tank;
the upper part and the bottom of the oil level annunciator are respectively provided with an oil path inlet, the upper oil path inlet of the oil level annunciator is communicated with the upper end of the overload box through an oil communicating pipeline, the bottom oil path inlet of the oil level annunciator is communicated with the middle part of the overload box through an oil communicating pipeline, and the oil level annunciator acquires oil level information of the overload box through oil paths on the upper part and the bottom of the oil level annunciator and judges the volume of available fuel oil in the overload box and the anti-negative overload time;
the air bleed electromagnetic valve is connected with the oil level annunciator, and discharges gas in the overload tank after the oil level annunciator detects an empty oil signal in the overload tank, so that the front oil tank or the rear oil tank supplies oil to the overload tank in a supplementing manner;
the air bleeding pipeline is connected with the air bleeding electromagnetic valve and used for discharging air of the air bleeding electromagnetic valve;
the connection mode of the air bleed electromagnetic valve and the oil level annunciator comprises air bleed pipeline connection and electric connection;
the air discharge pipeline is connected in a mode that the air discharge electromagnetic valve discharges air in the overload tank through the oil level annunciator;
and the electrical connection mode is used for sending a starting instruction to the air bleeding electromagnetic valve when the oil level annunciator detects that the overload box is internally provided with an empty oil signal, so that the air bleeding electromagnetic valve is opened to discharge the gas in the overload box.
2. The active-passive switching oil supply system for an aircraft according to claim 1, wherein the oil supply switching solenoid valve is a two-position three-way solenoid valve;
when the oil supply conversion electromagnetic valve supplies power, an oil path inlet connected with the front oil tank of the oil supply conversion electromagnetic valve is opened, oil is supplied to the oil supply conversion electromagnetic valve from the front oil tank, and an oil path inlet connected with the rear oil tank of the oil supply conversion electromagnetic valve is closed;
when the oil supply conversion electromagnetic valve does not supply power, an oil path inlet connected with the rear oil tank of the oil supply conversion electromagnetic valve is opened, oil is supplied to the oil supply conversion electromagnetic valve by the rear oil tank, and an oil path inlet connected with the front oil tank of the oil supply conversion electromagnetic valve is closed.
3. The active-passive switching oil supply system for an aircraft according to claim 1, wherein the oil level annunciator is electrically connected to the oil supply switching solenoid valve;
when the oil level annunciator monitors that the overload tank is an empty oil signal, the oil path inlet of the current oil supply conversion electromagnetic valve cannot meet the requirement is judged, and the oil supply conversion electromagnetic valve is controlled to replace the oil path inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911402038.0A CN111114802B (en) | 2019-12-31 | 2019-12-31 | Active and passive switching oil supply system for aircraft |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911402038.0A CN111114802B (en) | 2019-12-31 | 2019-12-31 | Active and passive switching oil supply system for aircraft |
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| Publication Number | Publication Date |
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| CN111114802A CN111114802A (en) | 2020-05-08 |
| CN111114802B true CN111114802B (en) | 2021-12-17 |
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| CN201911402038.0A Active CN111114802B (en) | 2019-12-31 | 2019-12-31 | Active and passive switching oil supply system for aircraft |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112455702B (en) * | 2021-02-01 | 2021-05-28 | 北京星际荣耀空间科技股份有限公司 | Fuel supply system and aircraft |
| CN112977851B (en) * | 2021-04-16 | 2022-08-05 | 贵州航天精工制造有限公司 | Aircraft anti-overload pressure-resistant thin-wall flexible oil tank |
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| Publication number | Publication date |
|---|---|
| CN111114802A (en) | 2020-05-08 |
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