CN202481321U - Anti-crash fuel tank of helicopter - Google Patents
Anti-crash fuel tank of helicopter Download PDFInfo
- Publication number
- CN202481321U CN202481321U CN 201120540964 CN201120540964U CN202481321U CN 202481321 U CN202481321 U CN 202481321U CN 201120540964 CN201120540964 CN 201120540964 CN 201120540964 U CN201120540964 U CN 201120540964U CN 202481321 U CN202481321 U CN 202481321U
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- CN
- China
- Prior art keywords
- fuel tank
- helicopter
- flange
- port seat
- crash
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
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Abstract
The utility model relates to the design field of a helicopter fuel system and relates to an anti-crash fuel tank of a helicopter. The anti-crash fuel tank comprises a fuel tank (1), a flange plate (3), a refueling port cover (6) and a refueling port seat (7); the flange plate (3) is vulcanized on the fuel tank (1); the refueling port seat (7) is arranged on the flange plate (3) through a bolt (5); the refueling port cover (6) is arranged on the refueling port seat (7); the refueling port seat (7) and the flange plate (3) are sealed by a seal ring (8); the anti-crash fuel tank further comprises a fragile connector (9) which is connected with the refueling port seat (7) and the flange plate (3) through the bolt (5); the fragile connector (9) and the flange plate (3) are compressed against a fuel tank bulkhead (2) through the bolt (5); the leakage of a large amount of fuel results from tearing or damage of the fuel tank (1) caused by deformation of the helicopter structure, so that the fuel tank (1) is not torn when the helicopter crashes.
Description
Technical field
The utility model relates to helicopter fuel oil system design field, relates to a kind of helicopter anti-crash fuel tank that is used for.
Background technology
Nearly all helicopter crashes to catch fire and causes fuel leakage to cause by crash, and in great majority can the existence accident, the anti-crash fuel tank back fuel leakage that can prevent to crash was avoided catching fire, thereby guaranteed to have the long enough time to allow occupant's escape.Oil filling port is that one end is connected with fuel tank to fuel tank gas filed passage, and the other end is connected with helicopter structure.When helicopter crashes, can produce certain displacement here, fuel tank is torn or the deformation failure of oil filling port own, cause the fuel oil leakage of oil, there is the danger of catching fire.
The oil filling port anti-crash structure of present most of helicopter fuel tank is on fuel tank 1, to adopt a kind of band plastic deformation compensation mechanism 10; Like India rubber tube etc.; Fuel tank 1 is connected with fuel tank bulkhead 2, shown in Figure 1 like specification sheets, when helicopter crashes; The distortion of expection appears in plastic deformation compensation mechanism 10, prevents that fuel tank 1 from being torn to cause leakage of oil.Its shortcoming is: the first, need bigger installing space, be not suitable for the situation that fuel tank 1 and helicopter fuel tank bulkhead 2 are fitted; The second, plastic deformation compensation mechanism 10 needs protection, and avoids by structure wearing and tearing even pierces through; Three, weight is heavier, difficult installation.
The utility model content
The deficiency of the fuel tank of the band plastic deformation compensation mechanism that adopts to the anti-crash fuel tank of present helicopter, the utility model proposes a kind of novel fuel tank that has the anti-crash structure.
The technical scheme that the utility model is taked is: a kind of helicopter anti-crash fuel tank comprises fuel tank (1), flange (3), filler cap (6), oil filling port seat (7); Flange (3) sulfuration is on fuel tank (1), and oil filling port seat (7) is installed on the flange (3) through bolt (5), and filler cap (6) is installed on the oil filling port seat (7), and oil filling port seat (7) seals through seal ring (8) with flange (3); Also comprise frangible attaching parts (9), frangible attaching parts (9) is connected with flange (3) with oil filling port seat (7) through bolt (5), compresses through bolt (5) and fuel tank bulkhead (2) between frangible attaching parts (9) and the flange (3); Between fuel tank bulkhead (2) and the flange (3) " O " shape seal ring (4) is installed.
Useful technique effect: frangible attaching parts (9) deforms when receiving certain load; Fuel tank (1) is separated with fuel tank bulkhead (2); Avoided causing great amount of fuel oil to leak because of helicopter structure distortion causes fuel tank (1) torn or destroy; And then torn at fuel tank (1) Shi Buhui that falls, ensured safety.
Description of drawings
Fig. 1 is existing anti-crash fuel tank structural representation;
Fig. 2 is the utility model anti-crash fuel tank structural representation;
Fuel tank separated scheme drawing when Fig. 3 crashed for the utility model anti-crash fuel tank with the fuel tank bulkhead;
Wherein, 1: fuel tank, 2: fuel tank bulkhead, 3: flange, 4: " O " shape seal ring, 5: bolt, 6: filler cap, 7: oil filling port seat, 8: seal ring, 9: frangible attaching parts, 10: the plastic deformation compensation mechanism.
The specific embodiment
Below in conjunction with Figure of description the utility model is done further explain, see also the bright book accompanying drawing 2,3 of book.
Fig. 2 is a kind of helicopter anti-crash fuel tank, and a kind of helicopter anti-crash fuel tank comprises fuel tank 1, flange 3, filler cap 6, oil filling port seat 7; Flange 3 sulfurations are on fuel tank 1, and oil filling port seat 7 is installed on the flange 3 through bolt 5, and filler cap 6 is installed on the oil filling port seat 7, and oil filling port seat 7 seals through seal ring 8 with flange 3; Also comprise frangible attaching parts 9, frangible attaching parts 9 is connected with flange 3 with oil filling port seat 7 through bolt 5, compresses through bolt 5 and fuel tank bulkhead 2 between frangible attaching parts 9 and the flange 3; " O " shape seal ring 4 is installed between fuel tank bulkhead 2 and the flange 3.
During normal operation, oil filling port seat 7 is installed on the flange 3 through bolt 5, and filler cap 6 is installed on the oil filling port seat 7, and oil filling port seat 7 seals through seal ring 8 with flange 3; " O " shape seal ring 4 is installed between fuel tank bulkhead 2 and the flange 3 to be sealed.Frangible attaching parts 9 clamps the tank bay wall with flange 3 through bolt, fixes the installation fuel tank filler, and the rigidity of frangible attaching parts 9 satisfies the requirement of fuel tank normal mounting and use.
When helicopter crashes; As shown in Figure 3; Frangible attaching parts 9 deforms when receiving certain load, and fuel tank 1 is separated with fuel tank bulkhead 2, and flange 3, bolt 5, filler cap 6, oil filling port seat 7, seal ring 8 still reliably link together with fuel tank 1; Guarantee sealing, caused fuel leakage with regard to avoiding because of helicopter structure distortion causes fuel tank torn or destroy like this.
Claims (1)
1. a helicopter anti-crash fuel tank comprises fuel tank (1), flange (3), filler cap (6), oil filling port seat (7); Flange (3) sulfuration is on fuel tank (1); Oil filling port seat (7) is installed on the flange (3) through bolt (5); Filler cap (6) is installed on the oil filling port seat (7), and oil filling port seat (7) seals through seal ring (8) with flange (3), it is characterized in that: also comprise frangible attaching parts (9); Frangible attaching parts (9) is connected with flange (3) with oil filling port seat (7) through bolt (5), compresses through bolt (5) and fuel tank bulkhead (2) between frangible attaching parts (9) and the flange (3); Between fuel tank bulkhead (2) and the flange (3) " O " shape seal ring (4) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120540964 CN202481321U (en) | 2011-12-20 | 2011-12-20 | Anti-crash fuel tank of helicopter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120540964 CN202481321U (en) | 2011-12-20 | 2011-12-20 | Anti-crash fuel tank of helicopter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202481321U true CN202481321U (en) | 2012-10-10 |
Family
ID=46955767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120540964 Expired - Lifetime CN202481321U (en) | 2011-12-20 | 2011-12-20 | Anti-crash fuel tank of helicopter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202481321U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103723279A (en) * | 2013-08-02 | 2014-04-16 | 太仓派欧技术咨询服务有限公司 | Shock-resisting oil tank structure |
| CN107270998A (en) * | 2017-05-19 | 2017-10-20 | 中航工业南航（深圳）测控技术有限公司 | Fuel-quantity transducer and fuel tank |
| CN111516902A (en) * | 2020-05-11 | 2020-08-11 | 西安近代化学研究所 | Equivalent aircraft fuel tank for water hammer effect test |
-
2011
- 2011-12-20 CN CN 201120540964 patent/CN202481321U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103723279A (en) * | 2013-08-02 | 2014-04-16 | 太仓派欧技术咨询服务有限公司 | Shock-resisting oil tank structure |
| CN107270998A (en) * | 2017-05-19 | 2017-10-20 | 中航工业南航（深圳）测控技术有限公司 | Fuel-quantity transducer and fuel tank |
| CN111516902A (en) * | 2020-05-11 | 2020-08-11 | 西安近代化学研究所 | Equivalent aircraft fuel tank for water hammer effect test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121010 |
|
| CX01 | Expiry of patent term |