Integral composite material oil tank

Abstract

The utility model discloses an integral type composite material oil tank, which relates to the technical field of oil tanks and comprises an oil tank shell and an oil tank upper cover arranged on the oil tank shell, an oil discharge port is arranged at the bottom of the oil tank shell, and an oil filling port communicated with the inside of the oil tank shell is arranged at the top of the oil tank upper cover. A plurality of wave-proof plates used for reducing fluctuation and impact of internal fuel oil are arranged in the oil tank shell. According to the integrated composite material oil tank shell, the structure is higher in reliability, the problems that a metal oil tank is heavy in weight, oil leaks and leaks from the welding position of the oil tank and the like are effectively solved, except that the oil filling port and the oil discharging port are made of metal materials, other oil tank structures are made of composite materials, the oil tank is lighter, and higher environmental adaptability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil tanks, in particular to an integral composite material oil tank. Background Art

[0002] Existing metal fuel tank welding methods result in heavy tanks, poor environmental adaptability, and low wear and corrosion resistance, increasing maintenance costs and complexity. Furthermore, welds are prone to fracture, oil leakage, and structural damage when impacted. Due to the process, metal fuel tanks have a relatively square appearance, hindering full flight performance.

[0003] To solve the above problems, an integral composite fuel tank is needed that can solve the problems of oil seepage and leakage at the welds and heavy weight. The fuel tank shell is made of an integral composite material, and other structural parts are mostly made of composite materials, which can effectively reduce the weight of the fuel tank. In addition, the integral composite fuel tank structure is more reliable, avoiding the technical problem of oil seepage and leakage at the welds in traditional welding processes. Summary of the Invention

[0004] In view of this, an object of the present invention is to provide an integral composite fuel tank.

[0005] The utility model provides an integral composite material fuel tank adopting the following technical solutions:

[0006] A monolithic composite fuel tank comprises a fuel tank shell and a fuel tank cover arranged on the fuel tank shell. The bottom of the fuel tank shell is provided with an oil drain port, and the top of the fuel tank cover is provided with a fuel filling port connected to the interior of the fuel tank shell. The fuel tank shell is provided with a plurality of wave-breaking plates for reducing internal fuel fluctuations and impacts.

[0007] Furthermore, the wave-breaking plate is evenly provided with a plurality of through holes for oil to pass through.

[0008] Furthermore, a gap is provided between the peripheral side of the wave-breaking plate and the inner wall of the oil tank shell.

[0009] Furthermore, the fuel tank shell is arranged in a bullet-shaped shape, a liquid accumulation groove is arranged at the bottom of the fuel tank shell, and the fuel tank cover is arranged in an arc shape and is fixed to the top of the fuel tank shell.

[0010] Furthermore, a connector for connecting to the inner wall of the fuel tank shell is provided on the peripheral side of the wave-breaking plate. The connector is L-shaped, and one end of the connector fixed to the fuel tank shell is arranged in an arc shape to fit the inner wall of the fuel tank shell.

[0011] Furthermore, a fuel tank connection portion for connecting to an aircraft is provided on the top of the fuel tank shell.

[0012] Furthermore, the fuel tank connection portion includes an integrally formed connection plate and a connection ear. The connection plate is arranged in an arc shape and is fixed on the fuel tank shell. The connection ear is arranged in an arc shape and is fixed on the connection plate for connection to the aircraft.

[0013] Furthermore, an oil level observation window is provided on the outer side of the oil tank housing.

[0014] Furthermore, the fuel filler port includes a fuel filler port connecting portion fixed on the fuel tank upper cover and a fuel tank cover arranged on the top of the fuel filler port connecting portion, and a vent hole is integrated in the fuel tank cover.

[0015] In summary, the present invention has at least one of the following beneficial effects:

[0016] 1. The integral composite fuel tank shell offers greater structural reliability, effectively resolving issues such as heavy metal tanks and oil leakage at welds. With the exception of the metal filler and drain ports, the rest of the tank structure is also made of composite materials, making it even lighter and more environmentally friendly.

[0017] 2. The fuel tank shell adopts a bullet-shaped design, which reduces the windward area and aerodynamic resistance, and improves the flight performance of the aircraft;

[0018] 3. Oil level observation window, even in extreme cases such as oil level sensor damage, you can still visually check the remaining fuel;

[0019] 4. The fuel tank cap is integrated with the vent hole, which effectively reduces the complexity of assembly and the weight of the part. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0021] Figure 2 This is an exploded diagram of an embodiment of the present utility model;

[0022] Figure 3 This is a front view structural diagram of the utility model;

[0023] Figure 4 For this utility model Figure 3 AA structural diagram;

[0024] Figure 5 For this utility model Figure 3 BB structural diagram;

[0025] Figure 6 For this utility model Figure 3 Schematic diagram of CC structure.

[0026] Description of reference numerals:

[0027] 1. Fuel tank shell; 11. Oil drain port; 12. Oil level observation window; 2. Fuel tank cover; 3. Wave-breaking plate; 31. Through hole; 4. Connecting piece; 5. Fuel tank connection; 51. Connecting plate; 52. Connecting ear; 6. Fuel filler port; 61. Fuel filler port connection; 62. Fuel tank cap; 63. Vent. DETAILED DESCRIPTION

[0028] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention.

[0029] The following is combined with Figure 1-6 The utility model is described in further detail.

[0030] The present invention discloses an integral composite fuel tank. Figures 1-6 The integral composite fuel tank includes a fuel tank shell 1 and a fuel tank cover 2 arranged on the fuel tank shell 1. The bottom of the fuel tank shell 1 is provided with a fuel drain port 11, and the top of the fuel tank cover 2 is provided with a fuel filling port 6 connected to the interior of the fuel tank shell 1. The fuel drain port 11 is a curved pipe fixed to the bottom of the fuel tank shell 1 by a flange. Except for the fuel filling port 6 and the fuel drain port 11 which are made of metal, the other fuel tank structures are made of composite materials, which makes the fuel tank lighter and has stronger environmental adaptability. The structure has higher reliability and effectively solves the problems of heavy weight of metal fuel tanks and oil leakage and oil seepage at the welding points of the fuel tank. Several wave-breaking plates 3 are provided in the fuel tank shell 1 to reduce internal fuel fluctuations and impacts. There are two wave-breaking plates 3 and they are respectively located on both sides of the fuel filling port 6. When the fuel flows in the fuel tank, the wave-breaking plates 3 can partially block the fuel, which can reduce the fluctuation of the fuel and the impact on the fuel tank.

[0031] In this embodiment, a plurality of through holes 31 for oil to pass through are evenly arranged on the wave-breaking plate 3, so that part of the fuel can pass through the through holes 31 on the wave-breaking plate 3, thereby reducing the impact of the fuel on the fuel tank.

[0032] In this embodiment, a gap is set between the surrounding side of the wave-breaking plate 3 and the inner wall of the fuel tank shell 1. The wave-breaking plate 3 is set in a rectangular shape, and the four corners of the wave-breaking plate 3 are set in an arc shape to maintain a gap with the inner wall of the fuel tank. There is a gap between the four side edges and the inner wall of the fuel tank shell 1, so that the fuel can also pass through the gap between the wave-breaking plate 3 and the fuel tank shell 1 when flowing.

[0033] In this embodiment, the fuel tank shell 1 is designed in the shape of a bullet head, and a liquid accumulation groove is provided at the bottom of the fuel tank shell 1, so that the windward area and aerodynamic resistance are smaller, and the aircraft has better flight performance. The fuel tank cover 2 is arranged in an arc shape and fits with the top of the fuel tank shell 1 by gluing, so that the fixing surface is larger, and at the same time the fuel tank shell 1 is closed to provide an installation platform for the refueling port 6.

[0034] In this embodiment, a connector 4 for connecting to the inner wall of the fuel tank shell 1 is provided on the peripheral side of the wave-breaking plate 3. The connector 4 is L-shaped, and one end of the connector 4 fixed to the fuel tank shell 1 is arranged in an arc shape and fits the inner wall of the fuel tank shell 1 by gluing, so that the connector 4 is in more complete contact with the inner wall of the fuel tank shell 1 and the connection is more stable.

[0035] In this embodiment, a fuel tank connecting portion 5 for connecting to an aircraft is provided on the top of the fuel tank housing 1. Two fuel tank connecting portions 5 are provided and are located on both sides of the refueling port 6, respectively, to facilitate installation of the fuel tank on the aircraft.

[0036] In this embodiment, the fuel tank connecting portion 5 includes an integrally formed connecting plate 51 and a connecting ear 52. The connecting plate 51 is arranged in an arc shape and is fixed on the fuel tank shell 1. The connecting ear 52 is arranged in an arc shape and is fixed on the connecting plate 51 for connecting to the aircraft. The connecting ear 52 is provided with a plurality of connection holes for connecting to the aircraft.

[0037] In this embodiment, an oil level observation window 12 is provided on the side of the fuel tank housing 1. The oil level observation window 12 is integrally formed with the fuel tank housing 1. Even in extreme cases such as when the oil level sensor is damaged, the remaining fuel amount can be intuitively checked through the oil level observation window 12.

[0038] In this embodiment, the fuel filler port 6 includes a fuel filler port connecting portion 61 fixed on the fuel tank upper cover 2 and a fuel tank cover 62 arranged on the top of the fuel filler port connecting portion 61. The fuel filler port connecting portion 61 is a cylindrical tube, and the fuel tank cover 62 is installed on the fuel filler port connecting portion 61 by means of a flange buckle. A vent hole 63 is integrated in the fuel tank cover 62, which effectively alleviates the complexity of assembly while also reducing the weight of the parts.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An integral composite fuel tank, characterized by: The invention comprises a fuel tank shell (1) and a fuel tank cover (2) arranged on the fuel tank shell (1); the fuel tank shell (1) is provided with a fuel drain port (11) at the bottom, the fuel tank cover (2) is provided with a fuel filling port (6) communicating with the interior of the fuel tank shell (1) at the top, and a plurality of anti-wave plates (3) for reducing internal fuel fluctuations and impacts are arranged inside the fuel tank shell (1).

2. The integral composite fuel tank according to claim 1, characterized in that: The anti-wave plate (3) is evenly provided with a plurality of through holes (31) for oil liquid to pass through.

3. The integral composite fuel tank according to claim 2, characterized in that: A gap is provided between the peripheral side of the wave-breaking plate (3) and the inner wall of the oil tank shell (1).

4. The integral composite fuel tank according to claim 1, characterized in that: The fuel tank shell (1) is arranged in a bullet-shaped shape, a liquid accumulation groove is arranged at the bottom of the fuel tank shell (1), and the fuel tank upper cover (2) is arranged in an arc shape and is fitted and fixed to the top of the fuel tank shell (1).

5. The integral composite fuel tank according to claim 4, characterized in that: A connecting piece (4) for connecting to the inner wall of the oil tank shell (1) is provided on the peripheral side of the wave-breaking plate (3); the connecting piece (4) is L-shaped; one end of the connecting piece (4) fixed to the oil tank shell (1) is arranged in an arc shape and fits the inner wall of the oil tank shell (1).

6. The integral composite fuel tank according to claim 4, characterized in that: The top of the fuel tank housing (1) is provided with a fuel tank connection portion (5) for connecting to an aircraft.

7. The integral composite fuel tank according to claim 6, characterized in that: The fuel tank connection portion (5) comprises an integrally formed connection plate (51) and a connection ear (52); the connection plate (51) is arranged in an arc shape and is fixedly attached to the fuel tank housing (1); and the connection ear (52) is arranged in an arc shape and is fixed to the connection plate (51) for connection to the aircraft.

8. The integral composite fuel tank according to claim 4, characterized in that: An oil level observation window (12) is provided on the outer side of the oil tank housing (1).

9. The integral composite fuel tank according to claim 1, characterized in that: The fuel filler port (6) comprises a fuel filler port connection portion (61) fixed on the fuel tank upper cover (2) and a fuel tank cover (62) arranged on the top of the fuel filler port connection portion (61); a vent hole (63) is integrated in the fuel tank cover (62).

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