CN219712457U - Anti-overflow oil breather valve device and aircraft oil tank - Google Patents
Anti-overflow oil breather valve device and aircraft oil tank Download PDFInfo
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- CN219712457U CN219712457U CN202223577709.7U CN202223577709U CN219712457U CN 219712457 U CN219712457 U CN 219712457U CN 202223577709 U CN202223577709 U CN 202223577709U CN 219712457 U CN219712457 U CN 219712457U
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- air passage
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- oil
- valve body
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- 230000002265 prevention Effects 0.000 claims abstract description 31
- 239000003305 oil spill Substances 0.000 claims abstract description 25
- 230000000903 blocking effect Effects 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 37
- 239000002828 fuel tank Substances 0.000 claims description 13
- 238000009423 ventilation Methods 0.000 abstract description 12
- 230000004044 response Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000000446 fuel Substances 0.000 description 4
- 230000002457 bidirectional effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
The utility model provides an anti-overflow oil breather valve device and an aircraft oil tank, and relates to the technical field of aircraft oil tank ventilation, comprising the following components: the oil-spilling prevention valve comprises a valve body, wherein a valve cavity is formed in the valve body, a first air passage and a second air passage are formed in the outer wall of the valve cavity, a mounting part is arranged on the outer side of one end of the valve body, an oil-spilling prevention blocking cap and an external air passage are formed in one end of the valve body, and an internal air passage is formed in the other end of the valve body; the first valve core and the second valve core are connected with each other, are movably arranged in the valve cavity, and are internally provided with a third air passage and a fourth air passage respectively, 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 one end of the first valve core far away from the second valve core; the problem that in the prior art, the aircraft oil tank is difficult to realize the balance adjustment of the internal and external air pressure of the aircraft oil tank through a mechanical structure with an oil spill prevention function and a compact structure and high response speed is solved.
Description
Technical Field
The utility model belongs to the technical field of ventilation of an aircraft fuel tank, and particularly relates to an oil spill prevention ventilation valve device and an aircraft fuel tank.
Background
In the aircraft fuel system, along with the change of altitude, the air pressure in the oil tank will change, and the too high air pressure can't bear aircraft structural strength, influences simultaneously and subtracts heavy effect, and the too low fuel of air pressure is extremely volatile, consequently need to carry out the balance of the inside and outside pressure differential of oil tank. When the simple ventilation valve is used for ventilation, the condition that the oil tank is thrown out of the oil tank along with the shaking process of the aircraft can be generated, so that oil leakage safety accidents are caused, and the air pressure inside and outside the oil tank of the aircraft needs to be balanced by developing an anti-overflow oil type two-way ventilation valve to meet the requirements of the aircraft on fuel storage under different working conditions.
Disclosure of Invention
The utility model aims to provide an oil spill prevention vent valve device and an aircraft oil tank, which solve the problem that the aircraft oil tank in the prior art is difficult to realize the balance adjustment of the internal and external air pressure of the aircraft oil tank through a mechanical structure with an oil spill prevention function, a compact structure and a high response speed.
In order to achieve the above object, the present utility model provides an oil spill prevention breather valve device, comprising:
the oil-spilling prevention valve comprises a valve body, wherein a valve cavity is formed in the valve body, a first air passage and a second air passage are formed in the outer wall of the valve cavity, a mounting part is arranged on the outer side of one end of the valve body, an oil-spilling prevention blocking cap and an external air passage are formed in one end of the valve body, and an internal air passage is formed in the other end of the valve body;
the first valve core and the second valve core are connected with each other, 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 formed 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 one end of the first valve core far away from the second valve core;
when the first valve core moves a first set distance to the direction of compressing the first elastic component, the third air channel is communicated with the first air channel, when the second valve core moves a second set distance to the direction of compressing the second elastic component, the fourth air channel is communicated with the second air channel, and the first air channel is communicated with the fourth air channel through the groove body.
Optionally, the mounting portion is a first mounting plate extending from one end of the valve body to the outer periphery, and a first mounting hole is formed in the first mounting plate.
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 cavity through a first annular groove, and the fourth opening is communicated with the valve cavity through a second annular groove.
Optionally, the one end of valve body is provided with the shutoff portion, the echelonment through-hole has been seted up at the middle part of shutoff portion, the echelonment through-hole by the valve body is close to the one end of valve pocket outwards is the diverging echelonment, anti-overflow oil blocking cap detachably sets up in the echelonment through-hole, the periphery of anti-overflow oil blocking cap set up to with echelonment through-hole clearance fit's echelonment outer wall, the echelonment outer wall with form labyrinth passageway between the echelonment through-hole, the outside gas passageway be labyrinth form and with labyrinth passageway intercommunication.
Optionally, the one end of the valve body is provided with a filter screen, which covers the external gas passage and the third opening.
Optionally, the peripheries of the first valve core and the second valve core 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 further comprises a third sealing groove and a third sealing ring, wherein the third sealing groove is arranged on 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 second valve core and the valve body.
The utility model 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.
Optionally, a second mounting plate is arranged on the oil tank body, a through hole is formed in the second mounting plate, the other end of the valve body penetrates through the through hole and is mounted inside the oil tank body, so that the first air passage and the internal air passage are communicated with the inside of the oil tank body, the mounting part is connected with the second mounting plate, and the second air passage and the external air passage are communicated with the external atmosphere of the oil tank body.
The utility model provides an anti-overflow oil breather valve device and an aircraft oil tank, which have the beneficial effects that: the first valve core moves a first set distance in the direction of compressing the first elastic component when the air pressure in the aircraft oil tank is lower than the external air pressure, so that the third air channel is communicated with the first air channel, the external air can flow into the aircraft oil tank, so that the internal and external air pressure of the aircraft oil tank are balanced, and 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 channel is communicated with the internal air channel, and the first air channel and the second air channel are communicated with the external air through the communication between the first air channel and the third air channel and the external air channel; in addition, the device is provided with the oil overflow prevention cap, so that the oil in the oil tank can be effectively prevented from overflowing in the process of outwards discharging the gas in the oil tank; the device has compact structure and convenient use, and can quickly and reliably realize automatic balance adjustment of the internal and external air pressure of the aircraft oil tank.
Additional features and advantages of the utility model will be set forth in the detailed description which follows.
Drawings
The foregoing and other objects, features and advantages of the utility model will be apparent from the following more particular descriptions of exemplary embodiments of the utility model as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the utility model.
Fig. 1 shows a schematic cross-sectional structure of an oil spill prevention vent valve apparatus according to one embodiment of the present utility model.
Fig. 2 shows a schematic cross-sectional structure of a valve body of an oil spill-proof breather valve device according to an embodiment of the present utility model.
Fig. 3 shows a schematic cross-sectional structure of a first valve element and a second valve element of an oil spill prevention breather valve device according to an embodiment of the present utility model.
Figure 4 shows a schematic cross-sectional structural view of a perforated plug of an oil spill-resistant vent valve apparatus according to one embodiment of the present utility model.
Reference numerals illustrate:
1. a valve body; 2. a valve cavity; 3. an oil spill prevention cap; 4. a first airway; 5. a second airway; 6. a mounting part; 7. a first valve core; 8. a second valve core; 9. a third airway; 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 connection portion; 16. a labyrinth-like channel; 17. a first annular groove; 18. a second annular groove; 19. a filter 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 passage; 28. an internal gas passage; 29. a tank body; 30. a plug with a hole; 31. a stepped outer wall; 32. stepped through holes.
Detailed Description
Preferred embodiments of the present utility model will be described in more detail below. While the preferred embodiments of the present utility model are described below, it should be understood that the present utility model may be embodied in various forms and should not be limited to 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 utility model to those skilled in the art.
As shown in fig. 1, the present utility model provides an oil spill prevention breather valve device, comprising:
the oil-spilling prevention 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 oil-spilling prevention 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 formed in the first valve core 7 and the second valve core 8, and an annular groove 29 is formed between the first valve core 7 and the second valve core 8;
the first elastic component 11 and the second elastic component 12 are respectively arranged at one end of the second valve core 8 far away from the first valve core 7 and one end of the first valve core 7 far away from the second valve core 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, 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.
In particular, in order to solve the problem that the aircraft fuel tank in the prior art is difficult to realize the balance adjustment of the internal and external air pressure of the aircraft fuel tank through a mechanical structure with the function of preventing fuel overflow, compact structure and high response speed; according to the oil spill prevention vent valve device provided by the utility model, the first air passage 4 and the second air passage 5 are arranged on the valve body 1, the first valve core 7 and the second valve core 8 which are respectively provided with the third air passage 9 and the fourth air passage 10 are arranged in the valve cavity 2, when the oil spill prevention vent valve device is used, only one end of the valve body 1 is exposed, the other end of the valve body 1 is arranged in the oil tank of an aircraft, so that the first air passage 4 is communicated with the interior of the oil tank of the aircraft, the second air passage 5 and the third air passage 9 are communicated with the outside atmosphere, when the air pressure in the oil tank of the aircraft is lower than the outside air pressure, the first valve core 7 moves a first set distance towards the direction of compressing the first elastic component 11, so that the third air passage 9 is communicated with the first air passage 4, the outside atmosphere can flow towards the oil tank of the aircraft, so that the inside and outside air pressure of the oil tank of the aircraft are balanced, when the air pressure in the oil tank of the aircraft is higher than the outside air pressure, the second valve core 8 moves a second set distance towards the direction of compressing the second elastic component 12, so that the fourth air passage 10 is communicated with the second air passage 5, and the air passage 4 can sequentially pass through the first air passage 7 and the second air passage 8, the second air passage 10 and the fourth air passage 10 and the outside air passage 10; in addition, the device is provided with the oil overflow prevention cap 3, so that the oil in the oil tank can be effectively prevented from overflowing in the process of outwards discharging the gas in the oil tank; the device has compact structure and convenient use, and can quickly and reliably realize automatic balance adjustment of the internal and external air pressure 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, and first mounting hole is used for installing the device conveniently, and the device can be installed through the mode of bolt-up.
In this embodiment, as shown in fig. 2, an annular groove 13 is disposed on one side of the first mounting plate near the other end of the valve body 1, and an annular seal member 14 may be disposed in the annular groove 13 for sealing during mounting of the device, thereby improving sealing performance.
In this embodiment, as shown in fig. 3, the third air passage 9 is in a zigzag shape, one end of the third air passage 9 is disposed on the end surface of the first valve core 7 far away from the second valve core 8, the other end of the third air passage 9 extends to the side wall of the first valve core 7 and is open, one end of the third air passage 9 is used for communicating with the atmosphere, and the other end of the third air passage 9 is used for communicating with the first air passage 4 after the first valve core 7 moves; the fourth air flue 10 is L-shaped, one end of the fourth air flue 10 is arranged on the end face of the second valve core 8, which is close to the first valve core 7, the other end of the fourth air flue 10 extends to the side wall of the second valve core 8 and is open, one end of the fourth air flue 10 is used for being communicated 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 flue 10 is used for being communicated with the second air flue 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 hole plugging head 30, the hole plugging head 30 is in threaded connection with the other end of the valve body 1, the hole on the hole plugging head 30 is an internal gas channel 28, the hole is communicated with the valve cavity 2, and the hole plugging head 30 can install and limit the first spring.
Alternatively, one end of the first air passage 4 is provided with a first opening outside the middle of the valve body 1, and the other end of the first air passage 4 extends toward the valve chamber 2 and is provided with a second opening communicating with the valve chamber 2.
In particular, the first opening is intended to communicate with the interior of an aircraft 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 communicating with the valve chamber 2.
In particular, the third opening is adapted to be in communication with the outside atmosphere when the device is in use.
Alternatively, the second opening communicates with the valve chamber 2 through a first annular groove 17, and the fourth opening communicates with the valve chamber 2 through 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 provided on the valve body 1, so that the second opening and the fourth opening are conveniently communicated with the third air passage 9 and the fourth air passage 10 respectively.
Optionally, one end of the valve body 1 is provided with a plugging part, a stepped through hole 32 is formed in the middle of the plugging part, the stepped through hole 32 is formed in a gradually expanding stepped shape outwards from one end of the valve body 1, which is close to the valve cavity 2, the oil spill prevention plugging cap 3 is detachably arranged in the stepped through hole 32, the periphery of the oil spill prevention plugging cap 3 is provided with a stepped outer wall 31 in clearance fit with the stepped through hole 32, a labyrinth-shaped channel 16 is formed between the stepped outer wall 31 and the stepped through hole 32, and the external air channel 27 is in a labyrinth shape and is communicated with the labyrinth-shaped channel 16.
Specifically, as shown in fig. 1, the plugging portion is integrally formed at one end of the valve body 1, the stepped through hole in the middle of the plugging portion is internally and in threaded connection with the anti-overflow oil plugging cap 3, the threaded portion is arranged on the outer periphery of the upper portion of the anti-overflow oil plugging cap 3, the stepped outer wall 31 is arranged on the outer periphery of the lower portion of the anti-overflow oil plugging cap 3, the labyrinth-shaped channel 16 is formed between the stepped outer wall 31 and the stepped through hole 32, ventilation can be realized, oil in the oil tank can be avoided, the external air channel 27 is in a labyrinth shape and is arranged on the end face of one end of the valve body 1, and extends inwards to be communicated with the labyrinth-shaped channel 16 for being communicated with external atmosphere to play a ventilation role.
Optionally, one end of the valve body 1 is provided with a screen 19, the screen 19 covering the external air passage 27 and the third opening.
Specifically, the arrangement of the filter screen 19 can prevent external dust or foreign matter from entering the external air passage 27 or entering the third opening, and thus can prevent the inside of the aircraft fuel tank from being polluted when the device is in use.
Optionally, the peripheries of the first valve core 7 and the second valve core 8 are respectively provided with a first sealing groove 22 and a second sealing groove 23, and the first sealing groove 22 and the second sealing groove 23 are respectively provided with a first sealing ring 20 and a second sealing ring 21;
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, which is 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 positioned at two sides of the fourth opening, and the second sealing ring 21 is positioned between the fourth air passage 10 and the fourth opening, so that when the second valve core 8 does not act, the tightness of the device can be ensured, and the gas cannot flow out from the first air passage 4 along the path from the valve cavity 2 to the fourth air passage 10.
The utility model 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, the oil spilling prevention vent valve device is arranged on the oil tank body of the aircraft oil tank, realizes bidirectional ventilation of the oil tank body, can automatically adjust the balance of the internal and external air pressures of the oil tank body no matter how the internal and external air pressures of the oil tank body change, ensures safe use of the oil tank body, and has an oil spilling prevention function.
Optionally, the oil tank body is provided with a second mounting plate 26, the second mounting plate 26 is provided with a through hole, the other end of the valve body 1 is installed inside the oil tank body through the through hole, 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 part 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 on 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 the disassembly are convenient; the first air passage 4 is communicated with the inside of the oil tank body when the bidirectional ventilation valve device is installed, and 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 larger than the internal air pressure and the air pressure difference is larger than the set pressure difference, the first valve core 7 moves towards the direction close to the second valve core 8, the first elastic part 11 is compressed, so that the third air passage 9 is communicated with the first air passage 4, 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 part 11; when the internal air pressure of the oil tank body is greater than the external air pressure and the air pressure difference is greater than the set pressure difference, the pressure enables the second valve core 8 to move towards the direction close to the first valve core 7, the second elastic component 12 is compressed, so that the fourth air passage 10 is communicated with the second air passage 5, the internal air of the oil tank body is discharged to the external atmosphere of the oil tank body sequentially through the first air passage 4, the groove body 29, the fourth air passage 10 and the second air passage 5, the internal air pressure and the external air pressure of the oil tank body are gradually balanced, and finally the second valve core 8 returns to the original position under the reset action of the compressed second elastic component 12. In the working process, the filter screen 19 enables air entering the oil tank body to be clean, the arrangement of a plurality of sealing rings ensures the sealing performance of the device, and the reliability of the device is improved; and the setting of anti-overflow oil blocking cap 3 makes the echelonment outer wall 31 form labyrinth passageway 16 with echelonment through-hole 32 between, can ventilate again can avoid the oil in the oil tank to spill, and outside gas channel 27 is the labyrinth form and sets up on the terminal surface of the one end of valve body 1, inwards extends to and communicates with labyrinth passageway 16 for communicate with outside atmosphere, plays the effect of ventilation.
The foregoing description of embodiments of the utility model has been presented for purposes of illustration and description, and is not intended to be exhaustive or 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 various embodiments described.
Claims (10)
1. An oil spill resistant vent valve apparatus, comprising:
the oil-spilling prevention valve comprises a valve body, wherein a valve cavity is formed in the valve body, a first air passage and a second air passage are formed in the outer wall of the valve cavity, a mounting part is arranged on the outer side of one end of the valve body, an oil-spilling prevention blocking cap and an external air passage are formed in one end of the valve body, and an internal air passage is formed in the other end of the valve body;
the first valve core and the second valve core are connected with each other, 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 formed 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 one end of the first valve core far away from the second valve core;
when the first valve core moves a first set distance to the direction of compressing the first elastic component, the third air channel is communicated with the first air channel, when the second valve core moves a second set distance to the direction of compressing the second elastic component, the fourth air channel is communicated with the second air channel, and the first air channel is communicated with the fourth air channel through the groove body.
2. The oil spill resistant vent valve apparatus of claim 1, wherein said mounting portion is a first mounting plate extending from one end of said valve body to the outer periphery, said first mounting plate having a first mounting hole provided therein.
3. An oil spill resistant vent valve apparatus as defined in claim 1, wherein one end of said first air passage is provided with a first opening outside the 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. A spill-resistant vent valve apparatus as recited in claim 3, wherein one end of said second air passage 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 passage extends to the other end of said valve body and is provided with a fourth opening communicating with said valve chamber.
5. An oil spill resistant vent valve apparatus as defined in claim 4, wherein said second opening communicates with said valve chamber through a first annular groove and said fourth opening communicates with said valve chamber through a second annular groove.
6. The oil spill prevention vent valve apparatus 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 formed in a gradually expanding stepped shape from one end of the valve body, which is close to the valve cavity, outwards, the oil spill prevention cap is detachably arranged in the stepped through hole, the periphery of the oil spill prevention cap is provided with a stepped outer wall in clearance fit with the stepped through hole, a labyrinth-shaped channel is formed between the stepped outer wall and the stepped through hole, and the external air channel is in a labyrinth shape and is communicated with the labyrinth-shaped channel.
7. An oil spill resistant vent valve apparatus as defined in claim 6, wherein said one end of said valve body is provided with a screen covering said exterior gas passage and said third opening.
8. The oil spill prevention breather valve device according to claim 7, wherein a first seal groove and a second seal groove are respectively arranged on the outer periphery of the first valve core and the second valve core, 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, wherein the third sealing groove is arranged on 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 second valve core and the valve body.
9. An aircraft fuel tank, comprising:
an oil tank body;
a spill vent valve apparatus according to any one of claims 1-8, mounted on the tank body.
10. The aircraft fuel tank of claim 9, wherein a second mounting plate is provided on the fuel tank body, a through hole is provided in the second mounting plate, the other end of the valve body penetrates through the through hole and is mounted to the inside of the fuel tank body, so that the first air passage and the internal air passage are communicated with the inside of the fuel tank body, the mounting portion is connected with the second mounting plate, and the second air passage and the external air passage are communicated with the outside atmosphere of the fuel tank body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223577709.7U CN219712457U (en) | 2022-12-30 | 2022-12-30 | Anti-overflow oil breather valve device and aircraft oil tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223577709.7U CN219712457U (en) | 2022-12-30 | 2022-12-30 | Anti-overflow oil breather valve device and aircraft oil tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219712457U true CN219712457U (en) | 2023-09-19 |
Family
ID=87984026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223577709.7U Active CN219712457U (en) | 2022-12-30 | 2022-12-30 | Anti-overflow oil breather valve device and aircraft oil tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219712457U (en) |
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2022
- 2022-12-30 CN CN202223577709.7U patent/CN219712457U/en active Active
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