CN115962328A - Oil spill prevention vent valve device and aircraft oil tank - Google Patents
Oil spill prevention vent valve device and aircraft oil tank Download PDFInfo
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- CN115962328A CN115962328A CN202211730476.1A CN202211730476A CN115962328A CN 115962328 A CN115962328 A CN 115962328A CN 202211730476 A CN202211730476 A CN 202211730476A CN 115962328 A CN115962328 A CN 115962328A
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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 an anti-oil spill ventilation valve device and an aircraft oil tank, which relate to the technical field of ventilation of the aircraft oil tank and comprise: the anti-spill valve comprises a valve body, a valve cavity, a first air passage and a second air passage, wherein the valve cavity is arranged inside the valve body, the first air passage and the second air passage are arranged inside the outer wall of the valve cavity, an installation part is arranged outside one end of the valve body, an anti-spill oil blocking cap and an external air passage are arranged inside one end of the valve body, and an internal air passage is arranged at the other end of the valve body; the first valve core and the second valve core are movably arranged in the valve cavity, a third air passage and a fourth air passage are respectively arranged in the first valve core and the second valve core, and an annular groove body is formed between the first valve core and the second valve core; the first elastic component and the second elastic component are respectively arranged at one end of the second valve core far away from the first valve core and at one end of the first valve core far away from the second valve core; the problem of among the prior art aircraft oil tank be difficult to realize the balanced regulation of inside and outside atmospheric pressure of aircraft oil tank through having the oil spilling prevention function, compact structure mechanical structure that response speed is fast is solved.
Description
Technical Field
The invention belongs to the technical field of ventilation of aircraft fuel tanks, and particularly relates to an oil spill prevention ventilation valve device and an aircraft fuel tank.
Background
In aircraft fuel oil system, along with the change of height above sea level, the atmospheric pressure will change in the oil tank, and atmospheric pressure is too high to bear aircraft structural strength, influences simultaneously and subtracts heavy effect, and atmospheric pressure is low extremely easily volatilize the fuel, consequently needs carry out the balance of the inside and outside pressure differential of oil tank. When ventilating through simple valve of ventilating, can produce the oil tank and rock the condition outside the in-process fluid gets rid of the oil tank along with the aircraft, lead to the incident such as oil leakage, for satisfying the requirement that the aircraft stored the fuel under the different operating modes, need research and development one kind anti-oil spill formula two-way breather valve realize balancing the inside and outside atmospheric pressure of aircraft oil tank.
Disclosure of Invention
The invention aims to provide an oil spill prevention vent valve device and an aircraft oil tank, and solves the problem that in the prior art, the balance adjustment of the internal and external air pressures of the aircraft oil tank is difficult to realize through a mechanical structure which has an oil spill prevention function and a compact structure and is high in response speed.
In order to achieve the above object, the present invention provides an oil spill prevention vent valve device, comprising:
the anti-spill valve comprises a valve body, wherein a valve cavity is arranged in the valve body, a first air passage and a second air passage are arranged in the outer wall of the valve cavity, an installation part is arranged on the outer side of one end of the valve body, an anti-spill oil blocking cap and an external air passage are arranged in one end of the valve body, and an internal air passage is arranged at the other end of the valve body;
the first valve core and the second valve core are movably arranged in the valve cavity, a third air passage and a fourth air passage are respectively arranged in the first valve core and the second valve core, and an annular groove body is formed between the first valve core and the second valve core;
the first elastic component and the second elastic component are respectively arranged at one end of the second valve core far away from the first valve core and at one end of the first valve core far away from the second valve core;
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 groove body.
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, one end of the valve body is provided with a blocking portion, a stepped through hole is formed in the middle of the blocking portion, the stepped through hole is gradually enlarged from one end, close to the valve cavity, of the valve body to the outside, the oil spill prevention blocking cap is detachably arranged in the stepped through hole, the periphery of the oil spill prevention blocking cap is arranged to be a stepped outer wall in clearance fit with the stepped through hole, a labyrinth-shaped passage is formed between the stepped outer wall and the stepped through hole, and the external gas passage is labyrinth-shaped and is communicated with the labyrinth-shaped passage.
Optionally, the one end of the valve body is provided with a screen covering the external gas passage 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;
the valve body is provided with a first opening, a second opening and a third opening, the first opening is arranged on the side, close to the second opening, of the first sealing groove, and the second opening is arranged on the side, close to the second opening, of the second sealing groove.
The invention also provides an aircraft fuel tank comprising:
an oil tank body;
the oil spill prevention ventilation valve device is arranged 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 makes first air flue with inside gas channel with the inside intercommunication of oil tank body, the installation department with the second mounting panel is connected, the second air flue with outside gas channel with the outside atmosphere intercommunication of oil tank body.
The invention provides an oil spill prevention vent valve device and an aircraft oil tank, which have the beneficial effects that: when the air pressure in the aircraft oil tank is lower than the external air pressure, the first valve core moves a first set distance in the direction of compressing the first elastic component, so that the third air passage is communicated with the first air passage, the external air can flow into the aircraft oil tank, the internal and external air pressures of the aircraft oil tank are balanced, when the air pressure in the aircraft oil tank is higher than the external air pressure, the second valve core moves a second set distance in the direction of compressing the second elastic component, so that the fourth air passage is communicated with the second air passage, and the internal and external air passages are discharged out of the valve cavity between the first valve core and the second valve core and are communicated with the fourth air passage, so that the air in the aircraft oil tank can sequentially pass through the first valve core, the fourth air passage, the second air passage and the external air passage to balance the aircraft oil tank; in addition, the device is provided with an oil spill prevention blocking cap, so that the oil in the oil tank can be effectively prevented from overflowing in the process of discharging the air in the oil tank outwards; the device has compact structure and convenient use, and can quickly and reliably realize the automatic regulation of the internal and external air pressure balance of the aircraft oil 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.
Fig. 1 shows a schematic cross-sectional view of an oil spill prevention vent valve apparatus according to an embodiment of the present invention.
Fig. 2 shows a schematic cross-sectional view of a valve body of an anti-spill vent valve device according to an embodiment of the present invention.
Fig. 3 shows a schematic cross-sectional view of the first and second valve spools of an anti-spill vent valve arrangement according to an embodiment of the invention.
FIG. 4 is a schematic cross-sectional view of a perforated plug of an anti-spill vent valve assembly according to an embodiment of the present invention.
Description of reference numerals:
1. a valve body; 2. a valve cavity; 3. an anti-oil spill plug cap; 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 columnar connecting portion; 16. a labyrinth-like passage; 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; 27. an external gas channel; 28. an internal gas passage; 29. a trough body; 30. a plug with a hole; 31. a stepped outer wall; 32. a stepped through hole.
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 an oil spill prevention vent valve device, comprising:
the anti-spill valve comprises a valve body 1, wherein a valve cavity 2 is arranged in the valve body 1, a first air passage 4 and a second air passage 5 are arranged in the outer wall of the valve cavity 2, a mounting part 6 is arranged on the outer side of one end of the valve body 1, an anti-spill oil blocking cap 3 and an external air passage 27 are arranged in one end of the valve body 1, and an internal air passage 28 is arranged at the other end of the valve body 1;
the first valve core 7 and the second valve core 8 which are connected with each other are movably arranged in the valve cavity 2, 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, and an annular groove body 29 is formed between the first valve core 7 and the second valve core 8;
a first elastic member 11 and a second elastic member 12, which are respectively disposed at one end of the second valve element 8 away from the first valve element 7 and at one end of the first valve element 7 away from the second valve element 8;
when the first valve core 7 moves a first set distance in the direction of compressing the first elastic component 11, the third air passage 9 is communicated with the first air passage 4, and when the second valve core 8 moves a second set distance in the direction of compressing the second elastic component 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 groove body 29.
Specifically, the problem that the balance adjustment of the internal and external air pressures of the aircraft oil tank is difficult to realize through a mechanical structure which has an oil spill prevention function and is compact in structure and high in response speed in the prior art is solved; the anti-oil-spill 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 anti-oil-spill 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 oil tank, so that the first air passage 4 is communicated with the interior of the aircraft oil 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 oil 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 oil tank, so that the air pressure inside and outside the aircraft oil tank is balanced, when the air pressure in the aircraft oil 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 aircraft oil tank 4, and the first air passage 4 are sequentially communicated with an air tank, and the first air tank, and the second air passage 10, and the second air tank, so that the air pressure inside and the aircraft oil tank can be discharged from the aircraft oil tank 2; in addition, the device is provided with an oil spill prevention blocking cap 3, so that the oil in the oil tank can be effectively prevented from overflowing in the process of discharging the air in the oil tank outwards; the device has compact structure and convenient use, and can quickly and reliably realize the automatic adjustment of the internal and external air pressure balance of the aircraft oil 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, the third air duct 9 is in a zigzag shape, 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 towards 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 the present embodiment, the first elastic member 11 and the second elastic member 12 are both springs.
In the present embodiment, the first spool 7 and the second spool 8 are integrally connected by the columnar connecting portion 16.
In this embodiment, the valve further includes a perforated plug 30, the perforated plug 30 is connected to the other end of the valve body 1 through a thread, a hole in the perforated plug 30 is an internal gas channel 28 and is communicated with the valve cavity 2, and the perforated plug 30 can limit the first spring to be installed.
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 duct 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 duct 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 the first annular groove 17 and the fourth opening communicates with the valve chamber 2 via the 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 blocking portion, a stepped through hole 32 is formed in the middle of the blocking portion, the stepped through hole 32 is gradually enlarged and stepped outwards from one end of the valve body 1 close to the valve cavity 2, the oil spill prevention blocking cap 3 is detachably arranged in the stepped through hole 32, the outer periphery of the oil spill prevention blocking cap 3 is provided with a stepped outer wall 31 in clearance fit with the stepped through hole 32, a labyrinth passage 16 is formed between the stepped outer wall 31 and the stepped through hole 32, and the external gas passage 27 is labyrinth-shaped and is communicated with the labyrinth passage 16.
Specifically, as shown in fig. 1, the blocking portion is integrally formed at one end of the valve body 1, the stepped through hole in the middle of the blocking portion is connected with the oil spill prevention blocking cap 3 through a thread, the upper periphery of the oil spill prevention blocking cap 3 is provided with a thread portion, the lower periphery of the oil spill prevention blocking cap 3 is provided with a stepped outer wall 31, a labyrinth passage 16 is formed between the stepped outer wall 31 and the stepped through hole 32, so that air can be vented and oil in the oil tank can be prevented from overflowing, the external air passage 27 is labyrinth-shaped and is arranged on the end face of one end of the valve body 1, and extends inwards to be communicated with the labyrinth passage 16 and is communicated with the external atmosphere, so as to play a role in ventilation.
Optionally, one end of the valve body 1 is provided with a screen 19, the screen 19 covering the outer air passage 27 and the third opening.
In particular, the presence of the screen 19 makes it possible to prevent external dust or debris from entering the external air channel 27 or the third opening, and thus to avoid contaminating the inside of the aircraft tank when the device is in use.
Optionally, the peripheries of the first valve spool 7 and the second valve spool 8 are respectively provided with a first seal groove 22 and a second seal groove 23, and a first seal ring 20 and a second seal ring 21 are respectively arranged in the first seal groove 22 and the second seal groove 23;
and the valve further comprises a third sealing groove 25 and a third sealing ring 24, wherein the third sealing groove 25 is arranged on one side of the fourth opening close to the second opening, and the third sealing ring 24 is arranged in the third sealing groove 25 and seals between the second valve core 8 and the valve body 1.
Specifically, the arrangement of the first sealing ring 20 and the second sealing ring 21 ensures the sealing between the first valve core 7 and the second valve core 8 and the valve body 1; the third sealing ring 24 and the second sealing ring 21 are respectively arranged at two sides of the fourth opening, and the second sealing ring 21 is arranged 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 the 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;
the oil spill prevention vent valve device is arranged on the oil tank body.
Specifically, above-mentioned oil spill prevention breather valve device installs on the oil tank body of 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 balance of homoenergetic automatically regulated oil tank body guarantees the safe handling of oil tank body to have the oil spill prevention function.
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, so that the first air passage 4 and the internal air passage 28 are 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 passage 5 and the external air passage 27 are communicated with the external 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 assembly and disassembly are convenient; 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 atmospheric pressure difference is greater than the settlement pressure difference, pressure makes second case 8 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, cell body 29, 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 valve core 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 arrangement of the plurality of sealing rings ensures the sealing performance of the device, and the reliability of the device is improved; and the arrangement of the anti-oil-spill blocking cap 3 forms a labyrinth-shaped channel 16 between the stepped outer wall 31 and the stepped through hole 32, which can ventilate and avoid oil in the oil tank from overflowing, and the external gas channel 27 is labyrinth-shaped and arranged on the end face of one end of the valve body 1, extends inwards to be communicated with the labyrinth-shaped channel 16, is used for being communicated with external atmosphere, and plays a role in ventilation.
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. An oil spill prevention vent valve device, the device comprising:
the anti-spill valve comprises a valve body, wherein a valve cavity is arranged in the valve body, a first air passage and a second air passage are arranged in the outer wall of the valve cavity, an installation part is arranged on the outer side of one end of the valve body, an anti-spill oil blocking cap and an external air passage are arranged in one end of the valve body, and an internal air passage is arranged at the other end of the valve body;
the first valve core and the second valve core are movably arranged in the valve cavity, a third air passage and a fourth air passage are respectively arranged in the first valve core and the second valve core, and an annular groove body is formed between the first valve core and the second valve core;
the first elastic component and the second elastic component are respectively arranged at one end of the second valve core far away from the first valve core and at one end of the first valve core far away from the second valve core;
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 groove body.
2. The apparatus of claim 1, wherein the mounting portion is a first mounting plate extending from one end of the valve body to an outer circumference, and the first mounting plate is provided with a first mounting hole.
3. The anti-spill ventilation valve device according to claim 1, wherein one end of said first air passage is provided with a first opening outside a middle portion of said valve body, and the other end of said first air passage extends toward said valve chamber and is provided with a second opening communicating with said valve chamber.
4. The anti-spill ventilation valve device according to claim 3, wherein one end of said second air duct is provided with a third opening on an end face of said one end of said valve body, and the other end of said first air duct extends to the other end of said valve body and is provided with a fourth opening communicating with said valve chamber.
5. The oil spill prevention vent valve device of 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. The oil spill prevention ventilation valve device according to claim 4, wherein the one end of the valve body is provided with a blocking portion, a stepped through hole is formed in the middle of the blocking portion, the stepped through hole is gradually enlarged from one end of the valve body close to the valve cavity, the oil spill prevention blocking cap is detachably arranged in the stepped through hole, the outer periphery of the oil spill prevention blocking cap is arranged to be a stepped outer wall in clearance fit with the stepped through hole, a labyrinth passage is formed between the stepped outer wall and the stepped through hole, and the external gas passage is labyrinth-shaped and is communicated with the labyrinth passage.
7. The oil spill prevention vent valve device of claim 6, wherein said one end of said valve body is provided with a screen covering said outer air passage and said third opening.
8. The anti-oil spill and vent valve device according to claim 1, wherein a first seal groove and a second seal groove are respectively formed in the peripheries of the first valve element and the second valve element, and a first seal ring and a second seal ring are respectively arranged in the first seal groove and the second seal groove;
the valve further comprises a third sealing groove and a third sealing ring, the third sealing groove is formed in one side, close to the second opening, of the fourth opening, and the third sealing ring is arranged in the third sealing groove and seals the space between the second valve core and the valve body.
9. An aircraft fuel tank, comprising:
an oil tank body;
the spill resistant vent valve device of any 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 having a through hole formed therein, the other end of the valve body extending through the through hole and being mounted to the inside of the tank body such that the first gas passage and the internal gas passage communicate with the inside of the tank body, the mounting portion being connected to the second mounting plate, the second gas passage and the external gas passage communicating with the atmosphere outside the tank body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211730476.1A CN115962328A (en) | 2022-12-30 | 2022-12-30 | Oil spill prevention vent valve device and aircraft oil tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211730476.1A CN115962328A (en) | 2022-12-30 | 2022-12-30 | Oil spill prevention vent valve device and aircraft oil tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115962328A true CN115962328A (en) | 2023-04-14 |
Family
ID=87363247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211730476.1A Pending CN115962328A (en) | 2022-12-30 | 2022-12-30 | Oil spill prevention vent valve device and aircraft oil tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115962328A (en) |
-
2022
- 2022-12-30 CN CN202211730476.1A patent/CN115962328A/en active Pending
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