CN115875491A - Two-way valve device and aviation aircraft oil tank of ventilating - Google Patents
Two-way valve device and aviation aircraft oil tank of ventilating Download PDFInfo
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- CN115875491A CN115875491A CN202211728656.6A CN202211728656A CN115875491A CN 115875491 A CN115875491 A CN 115875491A CN 202211728656 A CN202211728656 A CN 202211728656A CN 115875491 A CN115875491 A CN 115875491A
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- air passage
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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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Abstract
The invention provides a bidirectional ventilation valve device and an aircraft fuel tank, relating to the technical field of aviation of the aircraft fuel tank, and comprising: the valve comprises a valve body, a valve cavity is arranged in the valve body, a limiting part protruding inwards is arranged in the middle of the valve cavity, a first air passage and a second air passage are arranged in the outer wall of the valve cavity, and an installation part is arranged at one end of the valve body; the first valve core and the second valve core are movably arranged in the valve cavity and are respectively positioned at two sides of the limiting part, and a third air passage and a fourth air passage are respectively formed in the first valve core and the second valve core; a first elastic member and a second elastic member respectively provided between the first valve element and the stopper portion and between the second valve element and the stopper portion; the problem of among the prior art aviation aircraft oil tank be difficult to realize the balanced regulation of inside and outside atmospheric pressure of aviation aircraft oil tank through the mechanical structure of reliability height, compact structure is solved.
Description
Technical Field
The invention belongs to the technical field of aviation aircraft fuel tank ventilation, and particularly relates to a bidirectional ventilation valve device and an aviation aircraft fuel tank.
Background
The aircraft mainly comprises a power system, a control system, an electrical system and the like, wherein the power system comprises a fuel system, an air inlet system and the like. In a fuel oil system, along with the change of the altitude, the air pressure in the oil tank can be changed, the air pressure is too high to bear the structural strength of an aircraft, the weight reduction effect is influenced, the air pressure is too low, the fuel oil is extremely easy to volatilize, and therefore the balance of the pressure difference between the inside and the outside of the oil tank is an important link of the system design. In order to meet the requirement of the aircraft on fuel storage under different working conditions, it is particularly important to research a high-reliability and compact-structure bidirectional ventilation valve device to balance the air pressure inside and outside the aircraft fuel tank.
Disclosure of Invention
The invention aims to provide a bidirectional ventilation valve device and an aircraft fuel tank, and solves the problem that in the prior art, the balance adjustment of the internal and external air pressures of the aircraft fuel tank is difficult to realize through a mechanical structure with high reliability and compact structure.
In order to achieve the above object, the present invention provides a bidirectional ventilation shutter device, comprising:
the valve comprises a valve body, a valve cavity is arranged in the valve body, a limiting part protruding inwards is arranged in the middle of the valve cavity, a first air passage and a second air passage are arranged in the outer wall of the valve cavity, and an installation part is arranged at one end of the valve body;
the first valve core and the second valve core are movably arranged in the valve cavity and are respectively positioned at two sides of the limiting part, and a third air passage and a fourth air passage are respectively formed in the first valve core and the second valve core;
a first elastic member and a second elastic member respectively provided between the first valve element and the stopper portion and between the second valve element and the stopper portion;
when the first valve core moves for a first set distance in the direction of compressing the first elastic part, the third air passage is communicated with the first air passage, and when the second valve core moves for a second set distance in the direction of compressing the second elastic part, the fourth air passage is communicated with the second air passage, and the first air passage is communicated with the fourth air passage through the valve cavity between the first valve core and the second valve core.
Optionally, the installation department be by the first mounting panel of the one end of valve body to periphery extension, be provided with first mounting hole on the first mounting panel.
Optionally, one end of the first air passage is provided with a first opening at the outer side of the middle part of the valve body, and the other end of the first air passage extends towards the valve cavity and is provided with a second opening communicated with the valve cavity.
Optionally, one end of the second air passage is provided with a third opening on the end face of the one end of the valve body, and the other end of the first air passage extends to the other end of the valve body and is provided with a fourth opening communicated with the valve cavity.
Optionally, the second opening is communicated with the valve chamber through a first annular groove, and the fourth opening is communicated with the valve chamber through a second annular groove.
Optionally, the one end of the valve body is provided with a filter screen, and the filter screen covers the valve cavity and the third opening.
Optionally, the peripheries of the first valve element and the second valve element are respectively provided with a first sealing groove and a second sealing groove, and a first sealing ring and a second sealing ring are respectively arranged in the first sealing groove and the second sealing groove.
Optionally, the valve further comprises a third seal groove and a third seal ring, the third seal groove is disposed on one side of the fourth opening close to the second opening, and the third seal ring is disposed in the third seal groove and seals between the second valve element and the valve body.
The invention also provides an aircraft fuel tank comprising:
an oil tank body;
according to the bidirectional ventilation valve device, the bidirectional ventilation valve device is installed on the oil tank body.
Optionally, be provided with the second mounting panel on the oil tank body, the through hole has been seted up on the second mounting panel, the other end of valve body runs through the through hole install extremely the inside of oil tank body, make first air flue with the inside intercommunication of oil tank body, the installation department with the second mounting panel is connected, the second air flue with the outside atmosphere intercommunication of oil tank body.
The invention provides a bidirectional ventilation valve device and an aircraft fuel tank, which have the beneficial effects that: the two-way ventilation valve device is characterized in that a first air passage and a second air passage are arranged on a valve body, a first valve core and a second valve core with a third air passage and a fourth air passage are arranged in a valve cavity, when the two-way ventilation valve device is used, only one end of the valve body needs to be exposed, the other end of the valve body is installed in an aircraft fuel tank, the first air passage is communicated with the interior of the aircraft fuel tank, the second air passage and the third air passage are communicated with the outside air, when the air pressure in the aircraft fuel tank is lower than the outside air pressure, the first valve core moves a first set distance in the direction of compressing a first elastic component, the third air passage is communicated with the first air passage, the outside air can flow into the aircraft fuel tank, the air pressure in the aircraft fuel tank is balanced, when the air pressure in the aircraft fuel tank is higher than the outside air pressure, the second valve core moves a second set distance in the direction of compressing a second elastic component, the fourth air passage is communicated with the second air passage, the first air passage is communicated with the fourth air passage through the valve cavity between the first valve core and the second valve core, the air pressure in the aircraft fuel tank is balanced, and the second air passage is exhausted from the aircraft fuel tank to the outside air passage; the device has compact structure and convenient use, and can reliably realize the automatic regulation of the internal and external air pressure balance of the aircraft fuel tank.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout.
Figure 1 shows a schematic structural view of a two-way venting shutter device according to one embodiment of the present invention.
Figure 2 shows a schematic structural view of the valve body of a bidirectional ventilation shutter device according to one embodiment of the present invention.
Figure 3 shows a schematic of the first valve spool of a two-way vent valve arrangement according to one embodiment of the present invention.
Figure 4 shows a schematic of the second spool of a two-way vent valve apparatus according to one embodiment of the present invention.
Description of reference numerals:
1. a valve body; 2. a valve cavity; 3. a limiting part; 4. a first air passage; 5. a second air passage; 6. an installation part; 7. a first valve spool; 8. a second valve core; 9. a third air passage; 10. a fourth airway; 11. a first elastic member; 12. a second elastic member; 13. an annular groove; 14. an annular seal; 15. a first connection portion; 16. a second connecting portion; 17. a first annular groove; 18. a second annular groove; 19. filtering with a screen; 20. a first seal ring; 21. a second seal ring; 22. a first seal groove; 23. a second seal groove; 24. a third seal ring; 25. a third seal groove; 26. a second mounting plate.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
As shown in fig. 1, the present invention provides a bidirectional vent valve device, comprising:
the valve comprises a valve body 1, wherein a valve cavity 2 is arranged in the valve body 1, a limiting part 3 which protrudes inwards is arranged in the middle of the valve cavity 2, a first air passage 4 and a second air passage 5 are arranged in the outer wall of the valve cavity 2, and an installation part 6 is arranged at one end of the valve body 1;
the first valve core 7 and the second valve core 8 are movably arranged in the valve cavity 2 and are respectively positioned at two sides of the limiting part 3, and a third air passage 9 and a fourth air passage 10 are respectively arranged in the first valve core 7 and the second valve core 8;
a first elastic member 11 and a second elastic member 12 respectively provided between the first valve element 7 and the stopper portion 3 and between the second valve element 8 and the stopper portion 3;
when the first valve core 7 moves for a first set distance in the direction of compressing the first elastic part 11, the third air passage 9 is communicated with the first air passage 4, and when the second valve core 8 moves for a second set distance in the direction of compressing the second elastic part 12, the fourth air passage 10 is communicated with the second air passage 5, and the first air passage 4 is communicated with the fourth air passage 10 through the valve cavity 2 between the first valve core 7 and the second valve core 8.
Specifically, the problem that in the prior art, the balance adjustment of the internal and external air pressures of the aircraft fuel tank is difficult to realize through a mechanical structure with high reliability and compact structure is solved; the two-way ventilation valve device provided by the invention is characterized in that a first air passage 4 and a second air passage 5 are arranged on a valve body 1, a first valve core 7 and a second valve core 8 which are respectively provided with a third air passage 9 and a fourth air passage 10 are arranged in a valve cavity 2, when the two-way ventilation valve device is used, only one end of the valve body 1 needs to be exposed, the other end of the valve body 1 is arranged in an aircraft fuel tank, so that the first air passage 4 is communicated with the interior of the aircraft fuel tank, and the second air passage 5 and the third air passage 9 are communicated with the outside air, when the air pressure in the aircraft fuel tank is lower than the outside air pressure, the first valve core 7 moves a first set distance in the direction of compressing a first elastic component 11, so that the third air passage 9 is communicated with the first air passage 4, the outside air can flow into the aircraft fuel tank, so that the inside and outside air pressure of the aircraft fuel tank are balanced, when the air pressure in the aircraft fuel tank is higher than the outside air pressure, the second valve core 8 moves a second set distance in the direction of compressing a second elastic component 12, so that the fourth air passage 10 is communicated with the second air passage 5, and the second air passage 4 are communicated with the aircraft fuel tank, and the first air passage 4, and the second air passage 4 sequentially; the device has compact structure and convenient use, and can reliably realize the automatic regulation of the internal and external air pressure balance of the aircraft fuel tank.
Alternatively, the mounting portion 6 is a first mounting plate extending from one end of the valve body 1 to the outer periphery, and a first mounting hole is provided on the first mounting plate.
Specifically, the first mounting plate is annular, the first mounting hole is used for facilitating mounting of the device, and the device can be mounted in a bolt fastening mode.
In the present embodiment, as shown in fig. 2, an annular groove 13 is provided on the side of the first mounting plate close to the other end of the valve body 1, and an annular sealing member 14 may be provided in the annular groove 13 for sealing when the device is mounted, thereby improving the sealing performance.
In this embodiment, as shown in fig. 3 and 4, the third air duct 9 is zigzag, one end of the third air duct 9 is disposed on the end surface of the first valve core 7 away from the second valve core 8, the other end of the third air duct 9 extends and opens to the side wall of the first valve core 7, one end of the third air duct 9 is used for communicating with the atmosphere, and the other end of the third air duct 9 is used for communicating with the first air duct 4 after the first valve core 7 moves; the fourth air passage 10 is L-shaped, one end of the fourth air passage 10 is disposed on the end surface of the second valve core 8 close to the first valve core 7, the other end of the fourth air passage 10 extends to the side wall of the second valve core 8 and is open, one end of the fourth air passage 10 is used for communicating with the valve cavity 2 between the first valve core 7 and the second valve core 8, and the other end of the fourth air passage 10 is used for communicating with the second air passage 5 after the second valve core 8 moves.
In this embodiment, one end of the first valve element 7, which is close to the second valve element 8, is provided with a first connection portion 15 and a second connection portion 16, the first connection portion 15 and the second connection portion 16 are both in a column shape, a threaded hole is formed in the first connection portion 15, and the second connection portion 16 is a stud which is detachably connected with the threaded hole.
In the present embodiment, the first elastic member 11 and the second elastic member 12 are both springs.
Optionally, one end of the first air passage 4 is provided with a first opening at the outer side of the middle part of the valve body 1, and the other end of the first air passage 4 extends towards the valve cavity 2 and is provided with a second opening communicated with the valve cavity 2.
In particular, the first opening is intended to communicate with the interior of an aircraft fuel tank when the device is in use.
Optionally, one end of the second air passage 5 is provided with a third opening on the end face of one end of the valve body 1, and the other end of the first air passage 4 extends to the other end of the valve body 1 and is provided with a fourth opening communicated with the valve chamber 2.
In particular, the third opening is adapted to communicate with the external atmosphere when the device is in use.
Alternatively, the second opening communicates with the valve chamber 2 via a first annular groove 17 and the fourth opening communicates with the valve chamber 2 via a second annular groove 18.
Specifically, the second opening and the fourth opening are respectively communicated with the valve chamber 2 through a first annular groove 17 and a second annular groove 18 which are arranged on the valve body 1, so that the second opening and the fourth opening are respectively communicated with the third air passage 9 and the fourth air passage 10.
Optionally, one end of the valve body 1 is provided with a strainer 19, and the strainer 19 covers the valve chamber 2 and the third opening.
Specifically, the arrangement of the filter screen 19 can prevent external dust or impurities from entering the third air passage 9 or entering the third opening, and further can prevent the inside of the fuel tank of the aircraft from being polluted when the device is used.
In this embodiment, the mounting portion 6 is provided with a screen 19 mounting groove.
Optionally, the first spool 7 and the second spool 8 are respectively provided with a first seal groove 22 and a second seal groove 23 at the outer peripheries thereof, and the first seal groove 22 and the second seal groove 23 are respectively provided with a first seal ring 20 and a second seal ring 21 therein.
In particular, the provision of the first and second sealing rings 20, 21 ensures sealing between the first and second spools 7, 8 and the valve body 1.
Optionally, a third seal groove 25 and a third seal ring 24 are further included, the third seal groove 25 is disposed on a side of the fourth opening close to the second opening, and the third seal ring 24 is disposed in the third seal groove 25 and seals between the second spool 8 and the valve body 1.
Specifically, the third sealing ring 24 and the second sealing ring 21 are respectively located on two sides of the fourth opening, and the second sealing ring 21 is located between the fourth air channel 10 and the fourth opening, so that when the second valve core 8 does not act, the sealing performance of the device can be ensured, and gas cannot escape from the first air channel 4 along a path from the valve cavity 2 to the fourth air channel 10.
The invention also provides an aircraft fuel tank comprising:
an oil tank body;
in the bidirectional ventilation valve device, the bidirectional ventilation valve device is arranged on the oil tank body.
Specifically, above-mentioned two-way valve device of ventilating installs on the oil tank body of aviation aircraft oil tank, realizes the two-way ventilation of oil tank body, no matter how the inside and outside atmospheric pressure of oil tank body changes, the inside and outside atmospheric pressure of homoenergetic automatically regulated oil tank body is balanced, guarantees the safe handling of oil tank body.
Optionally, a second mounting plate 26 is arranged on the oil tank body, a through hole is formed in the second mounting plate 26, the other end of the valve body 1 penetrates through the through hole and is mounted inside the oil tank body, the first air channel 4 is communicated with the inside of the oil tank body, the mounting portion 6 is connected with the second mounting plate 26, and the second air channel 5 is communicated with the outside atmosphere of the oil tank body.
Specifically, the periphery of the through hole in the second mounting plate 26 is provided with a second mounting hole matched with the first mounting hole, and the bidirectional ventilation valve device can be mounted on the oil tank body through bolts, so that the bidirectional ventilation valve device is convenient to assemble and disassemble; when the bidirectional ventilation valve device is installed, the first air passage 4 is communicated with the inside of the oil tank body, the second air passage 5 is communicated with the outside atmosphere of the oil tank body, and the use process is as follows:
when the external air pressure of the oil tank body is greater than the internal air pressure and the air pressure difference is greater than the set pressure difference, the pressure enables the first valve core 7 to move towards the direction close to the second valve core 8, the first elastic component 11 is compressed, so that the third air channel 9 is communicated with the first air channel 4, the external air enters the oil tank body, the internal air pressure and the external air pressure of the oil tank body are gradually balanced, and finally the first valve core 7 returns to the original position under the reset action of the compressed first elastic component 11; when the inside atmospheric pressure of oil tank body is greater than outside atmospheric pressure, and when the atmospheric pressure difference was greater than the settlement pressure difference, pressure made second case 8 to remove to the direction that is close to first case 7, second elastomeric element 12 is compressed, thereby make fourth air flue 10 and second air flue 5 intercommunication, the inside air of oil tank body passes through first air flue 4 in proper order, valve pocket 2, fourth air flue 10, the outside atmosphere of oil tank body is discharged to second air flue 5, make the inside and outside atmospheric pressure of oil tank body balance gradually, finally second case 8 gets back to the normal position under the reset action of compressed second elastomeric element 12. In the working process, the filter screen 19 enables air entering the oil tank body to be clean, the sealing performance of the device is guaranteed due to the arrangement of the plurality of sealing rings, and the reliability of the device is improved.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (10)
1. A bi-directional venting valve assembly, comprising:
the valve comprises a valve body, a valve cavity is arranged in the valve body, a limiting part protruding inwards is arranged in the middle of the valve cavity, a first air passage and a second air passage are arranged in the outer wall of the valve cavity, and an installation part is arranged at one end of the valve body;
the first valve core and the second valve core are movably arranged in the valve cavity and are respectively positioned at two sides of the limiting part, and a third air passage and a fourth air passage are respectively formed in the first valve core and the second valve core;
the first elastic component and the second elastic component are respectively arranged between the first valve core and the limiting part and between the second valve core and the limiting part;
when the first valve core moves for a first set distance in the direction of compressing the first elastic part, the third air passage is communicated with the first air passage, and when the second valve core moves for a second set distance in the direction of compressing the second elastic part, the fourth air passage is communicated with the second air passage, and the first air passage is communicated with the fourth air passage through the valve cavity between the first valve core and the second valve core.
2. A bi-directional venting shutter apparatus according to claim 1, wherein the mounting portion is a first mounting plate extending peripherally from one end of the valve body, the first mounting plate having a first mounting hole formed therein.
3. A bi-directional venting valve apparatus according to claim 1, wherein one end of the first air passage is provided with a first opening at the outside of the middle of the valve body, and the other end of the first air passage extends towards the valve chamber and is provided with a second opening communicating with the valve chamber.
4. A bi-directional venting shutter arrangement according to claim 3, characterized in that one end of the second air passage is provided with a third opening on the end face of said one end of the valve body, the other end of the first air passage extending to the other end of the valve body and being provided with a fourth opening communicating with the valve chamber.
5. A bi-directional venting shutter arrangement according to claim 4 wherein the second opening communicates with the valve chamber through a first annular groove and the fourth opening communicates with the valve chamber through a second annular groove.
6. A bi-directional venting shutter arrangement as claimed in claim 4, wherein the one end of the valve body is provided with a screen covering the valve chamber and the third opening.
7. The bidirectional vent valve apparatus of claim 1, wherein the peripheries of the first valve element and the second valve element are respectively provided with a first sealing groove and a second sealing groove, and a first sealing ring and a second sealing ring are respectively arranged in the first sealing groove and the second sealing groove.
8. The bidirectional vent valve apparatus of claim 4, further comprising a third seal groove disposed on a side of the fourth opening adjacent to the second opening, and a third seal ring disposed in the third seal groove and sealing between the second valve element and the valve body.
9. An aircraft fuel tank, comprising:
an oil tank body;
a bi-directional vent valve apparatus as claimed in any one of claims 1 to 8, mounted on the tank body.
10. The aircraft fuel tank of claim 9 wherein the tank body is provided with a second mounting plate, the second mounting plate is provided with a through hole, the other end of the valve body penetrates through the through hole and is mounted inside the tank body, so that the first air passage communicates with the inside of the tank body, the mounting portion is connected to the second mounting plate, and the second air passage communicates with the outside atmosphere of the tank body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211728656.6A CN115875491A (en) | 2022-12-30 | 2022-12-30 | Two-way valve device and aviation aircraft oil tank of ventilating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211728656.6A CN115875491A (en) | 2022-12-30 | 2022-12-30 | Two-way valve device and aviation aircraft oil tank of ventilating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115875491A true CN115875491A (en) | 2023-03-31 |
Family
ID=85757617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211728656.6A Pending CN115875491A (en) | 2022-12-30 | 2022-12-30 | Two-way valve device and aviation aircraft oil tank of ventilating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115875491A (en) |
-
2022
- 2022-12-30 CN CN202211728656.6A patent/CN115875491A/en active Pending
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