CN113232873B - Automatic switch system for blockage of air port of aircraft fuel tank - Google Patents
Automatic switch system for blockage of air port of aircraft fuel tank Download PDFInfo
- Publication number
- CN113232873B CN113232873B CN202110545620.3A CN202110545620A CN113232873B CN 113232873 B CN113232873 B CN 113232873B CN 202110545620 A CN202110545620 A CN 202110545620A CN 113232873 B CN113232873 B CN 113232873B
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- China
- Prior art keywords
- signal
- aircraft
- fuel tank
- vent cover
- prejudging
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- 239000002828 fuel tank Substances 0.000 title claims description 17
- 230000000903 blocking effect Effects 0.000 claims description 4
- 239000003921 oil Substances 0.000 description 15
- 239000000446 fuel Substances 0.000 description 11
- 238000004132 cross linking Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 239000000295 fuel oil Substances 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Images
Classifications
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- 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
- B64D37/005—Accessories not provided for in the groups B64D37/02 - B64D37/28
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- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/40—Weight reduction
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
An automatic switch system for the blockage of the air port of an airplane oil tank comprises an air port cover, a signal prejudging device and an executing mechanism, wherein the air port cover is connected to the air port of the airplane oil tank, the executing mechanism is connected with the air port cover and can drive the air port cover to open or close, the executing mechanism is connected with the signal prejudging device and is controlled by the signal prejudging device, the signal prejudging device sends an instruction for opening or closing the air port cover to the executing mechanism according to an airplane state signal, and the signal prejudging device is associated with an airplane platform and acquires the airplane state signal through the airplane platform.
Description
Technical Field
The patent relates to an aircraft design technology, further relates to a fuel system of an aircraft, and specifically relates to an automatic switching system for blockage of a vent hole of an aircraft fuel tank.
Background
In open aircraft fuel supply systems, the consumption of fuel causes a reduction in the pressure inside the fuel tank. In order to maintain the balance of the internal and external pressures in the tank, the tank needs to be vented to atmosphere. Therefore, a special air duct is adopted to communicate the inside and the outside of the oil tank, and the outer end of the air duct is arranged on the outer surface of a certain part of the machine body. When the aircraft is parked on the ground for a long time, some animals (such as birds) can enter the pipeline, so that the pipeline is blocked, oil supply is difficult, and the aerial parking fault of the engine is caused. In order to prevent the situation from happening, in the prior art, when the airplane needs to be parked for a long time after landing, the oil tank vent hole is blocked by ground service personnel, foreign matters are prevented from entering an airplane fuel oil pipeline, before the airplane takes off, the ground service personnel clean the objects blocking the oil tank vent hole, the oil tank vent hole is communicated with the atmosphere, and the airplane taking-off preparation work is well done. Due to the influence of human factors, the possibility of the accident of the airplane can be caused once misoperation or forgetting occurs on the blockage and cleaning work of the oil tank vent, and the accident can occur.
Therefore, for the above reasons, it is desirable to provide an automatic opening and closing system for a tank vent blockage, which controls the opening and closing of the tank vent blockage of an aircraft through a signal cross-linking and actuating mechanism.
Disclosure of Invention
In order to overcome the problems in the prior art and realize the automatic control of the switch of the aircraft fuel tank vent, the application provides an automatic switch system for the blockage of the aircraft fuel tank vent.
The automatic switch system for the blockage of the air port of the aircraft fuel tank comprises an air port cover, a signal pre-judging device and an executing mechanism, wherein the air port cover is connected to the air port of the aircraft fuel tank.
The executing mechanism is an electric mechanism which is controlled by a signal prejudging device, driven by an onboard power supply and provided with a limiting device and position signal feedback.
The aircraft state signal contains an airspeed signal, a landing gear grounding signal, a ground refueling signal and an engine rotating speed signal of the aircraft.
When the airspeed signal received by the signal prejudging device is greater than a preset given value, or the landing gear grounding signal is in the air, or the ground refueling signal is electrified, or the engine rotating speed signal is greater than the slow vehicle rotating speed, the signal prejudging device sends a vent cover opening signal, and the executing mechanism opens the vent cover to enable the aircraft oil tank vent to be communicated with the outside.
When the airspeed signal received by the signal prejudging device is smaller than a preset given value, the landing gear grounding signal is the ground, the ground refueling signal is power-off, and the engine rotating speed signal is smaller than the slow vehicle rotating speed, the signal prejudging device sends out a vent cover closing signal, and the executing mechanism closes the vent cover.
The beneficial effect of this application lies in: 1) This application is through with aircraft state signal cross-linking and actuating mechanism, control opening and closing of aircraft oil tank vent department jam flap, and the vent is opened and is closed under the realization unmanned operation condition, and the incident takes place because of not opening that the error appears when avoiding the manual operation, and then causes the hidden danger that aircraft fuel oil system fuel feeding difficulty arouses the flight accident. 2) According to the state signal of the airplane, the air port of the oil tank is automatically opened when the airplane is subjected to fuel consumption or ground refueling through the actuating mechanism, and the air port of the oil tank is automatically closed when the airplane is not subjected to fuel consumption and non-refueling on the ground through the actuating mechanism. 3) This application can prevent that the aircraft from not opening the oil tank blow vent and blockking up and getting into high-speed and slideing, also can prevent to open the oil tank blow vent when ground pressure refuels and block up and make the oil tank superpressure damage, blocks up when avoiding manual operation and is forgotten to take down and cause the aircraft to damage or the possibility of losing things.
The present application is described in further detail below with reference to the accompanying drawings of embodiments.
Drawings
FIG. 1 is a cross-linking relationship diagram of an automatic opening and closing system for blocking an air vent of an aircraft fuel tank
Detailed Description
Referring to the attached drawings, the automatic switching system for blocking the air vent of the aircraft oil tank comprises an air vent cover, a signal prejudging device and an executing mechanism, wherein the air vent cover is connected to the air vent of the aircraft oil tank, the executing mechanism is connected with the air vent cover, the executing mechanism can drive the air vent cover to open or close, and the executing mechanism is connected with the signal prejudging device. In the implementation, the actuating mechanism is an electric mechanism which is controlled by a signal prejudging device, driven by an onboard power supply and provided with a limiting device and position signal feedback.
The executing mechanism is controlled by a signal prejudging device, the signal prejudging device sends an instruction for opening or closing the vent cover to the executing mechanism according to the airplane state signal, and the signal prejudging device is associated with the airplane platform and acquires the airplane state signal through the airplane platform.
The signal prejudging device is a control box containing a logic circuit, receives signals of airspeed, landing gear grounding, ground refueling control box electrification, engine rotating speed and the like input by an aircraft platform system, confirms the current flight state of the aircraft according to the signals, sends an opening or closing instruction of the vent cover to the executing mechanism according to the aircraft state signals, and the executing mechanism completes the opening or closing of the vent cover according to the instruction.
The aircraft state signals comprise an airspeed signal of the aircraft, a landing gear grounding signal, a ground refueling signal and an engine rotating speed signal.
The airplane state comprises a state that the airplane is shut down and refueled without driving on the ground, a state that the ground engine is driven on the ground, a state that the airplane slides at a low speed, a state that the airplane slides at a high speed and flies, and a state that the airplane is shut down and does not drive and refueled without driving on the ground. The different states of the aircraft determine the fuel consumption requirements and whether the ventilation opening needs to be connected to the atmosphere, the ventilation opening cover must be opened in the fuel consumption state or the fuel filling state, and the ventilation opening cover should be closed when the aircraft is in the non-fuel consumption state and the ground is not in the fuel filling state.
The aircraft is in a state of no start, stop and refueling on the ground: the control requirement is that the vent cover is opened, the conditions are that the airspeed is zero (considering the system error, a lower airspeed value can be selected), the landing gear grounding signal is the ground, the pressure refueling box is electrified, and the engine rotating speed is less than the slow vehicle rotating speed;
the airplane is in a ground engine driving state or an airplane low-speed sliding state: the control requirement is that the vent cover is opened, the conditions are that the airspeed is zero (considering the system error, a lower airspeed value can be selected), the landing gear grounding signal is the ground, the pressure refueling box is powered off, and the engine rotating speed is greater than the slow vehicle rotating speed;
airplane high-speed taxiing and flying state: the control requirement is that the vent cover is opened, the conditions are that the airspeed is greater than the given value of the airplane, the landing gear grounding signal is in the air, the pressure refueling box is powered off, and the engine speed is greater than the slow speed;
the airplane is stopped on the ground and is not driven and is not oiled: the control requirement is that the vent cover is closed, the conditions are that the airspeed is zero (a lower airspeed value can be selected in consideration of system errors), the landing gear grounding signal is the ground, the pressure refueling box is powered off, and the engine rotating speed is less than the slow vehicle rotating speed;
based on the control requirements and available conditions, the automatic opening and closing system of the aircraft fuel tank vent cover is set to be that when an airspeed signal received by the signal prejudging device is greater than a preset given value, or a landing frame grounding signal received by the signal prejudging device is in the air, or a ground refueling signal received by the signal prejudging device is electrified, or an engine rotating speed signal received by the signal prejudging device is greater than a slow vehicle rotating speed, the signal prejudging device sends out a vent cover opening signal, and the executing mechanism opens the vent cover to enable the aircraft fuel tank vent cover to be communicated with the outside.
When the airspeed signal received by the signal prejudging device is smaller than a preset given value, the landing gear grounding signal received by the signal prejudging device is the ground, the ground refueling signal received by the signal prejudging device is power off, and the engine rotating speed signal received by the signal prejudging device is smaller than the slow vehicle rotating speed, the signal prejudging device sends a vent cover closing signal, and the actuating mechanism closes the vent cover.
Claims (4)
1. The automatic switch system for the blockage of the air port of the aircraft fuel tank comprises an air vent cover, a signal prejudging device and an executing mechanism, wherein the air vent cover is connected to the air vent of the aircraft fuel tank, the executing mechanism is connected with the air vent cover and can drive the air vent cover to open or close, the executing mechanism is connected with the signal prejudging device and is controlled by the signal prejudging device, the signal prejudging device sends an instruction for opening or closing the air vent cover to the executing mechanism according to an aircraft state signal, the signal prejudging device is associated with an aircraft platform and acquires the aircraft state signal through the aircraft platform, and the aircraft state signal comprises an airspeed signal, an undercarriage grounding signal, a ground refueling signal and an engine rotating speed signal of the aircraft.
2. The automatic switching system for aircraft fuel tank vent blockage according to claim 1, wherein said actuator is an electric mechanism with a position limiting device and position signal feedback, which is driven by an onboard power supply and controlled by a signal pre-judging device.
3. The automatic switch system for blocking the vent hole of the aircraft fuel tank according to claim 1, wherein when the airspeed signal received by the signal prejudging device is greater than a preset given value, or the landing gear grounding signal is in the air, or the ground refueling signal is electrified, or the engine speed signal is greater than the slow speed, the signal prejudging device sends a vent cover opening signal, and the actuating mechanism opens the vent cover to communicate the vent hole of the aircraft fuel tank with the outside.
4. The aircraft fuel tank vent blockage automatic switching system of claim 1, wherein said signal prejudging device receives an airspeed signal less than a preset given value, and a landing gear grounding signal is ground, and when a ground refueling signal is power off and an engine speed signal is less than a slow speed, the signal prejudging device sends out a vent cover closing signal, and the actuating mechanism closes the vent cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110545620.3A CN113232873B (en) | 2021-05-19 | 2021-05-19 | Automatic switch system for blockage of air port of aircraft fuel tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110545620.3A CN113232873B (en) | 2021-05-19 | 2021-05-19 | Automatic switch system for blockage of air port of aircraft fuel tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113232873A CN113232873A (en) | 2021-08-10 |
| CN113232873B true CN113232873B (en) | 2023-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110545620.3A Active CN113232873B (en) | 2021-05-19 | 2021-05-19 | Automatic switch system for blockage of air port of aircraft fuel tank |
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| CN (1) | CN113232873B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20206097U1 (en) * | 2002-04-17 | 2003-06-18 | Blau Kunststofftechnik Zweigniederlassung der Tesma Europa GmbH, 41516 Grevenbroich | tank closure |
| CN103569370A (en) * | 2013-11-01 | 2014-02-12 | 成都飞机工业（集团）有限责任公司 | Electromechanical ventilating valve capable of controlling gas pressure inside closed cavity |
| CN105620773B (en) * | 2014-10-28 | 2018-04-03 | 中国航空工业集团公司西安飞机设计研究所 | A kind of bidirectional ventilating device for general class aircraft wing fuel tank vent system |
| CN107757352B (en) * | 2016-08-22 | 2022-04-05 | 福特环球技术公司 | Oil filler cap and control method |
| CN107013720B (en) * | 2017-03-31 | 2019-08-23 | 中国航空工业集团公司西安飞机设计研究所 | A kind of joint latch mechanism and the aircraft with it |
| CN110963058A (en) * | 2019-12-23 | 2020-04-07 | 中国航空工业集团公司沈阳飞机设计研究所 | Float valve for aircraft ventilation and pressurization system |
| CN111924087A (en) * | 2020-08-14 | 2020-11-13 | 中国航空工业集团公司沈阳飞机设计研究所 | Ventilation opening cover |
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- 2021-05-19 CN CN202110545620.3A patent/CN113232873B/en active Active
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| CN113232873A (en) | 2021-08-10 |
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