Lightweight oil tank communicated with one-way valve

Abstract

The invention belongs to the field of aircraft fuel systems, and particularly relates to a lightweight fuel tank communicated with a one-way valve. The fuel tank is divided into a main fuel tank and a plurality of branch fuel tanks through a bulkhead; wherein the main oil tank is provided with an oil outlet, and a one-way valve is arranged on the tank wall for isolating the main oil tank from the branch oil tank; the one-way valve comprises a valve pressing plate and a valve piece. The valve pressing plate and the valve piece are of an integrated structure, a bent groove is formed between the valve pressing plate and the valve piece, and the valve pressing plate and the valve piece rotate relative to the valve pressing plate along the bent groove. A through hole is formed in the bulkhead, the valve pressing plate is fixed above the through hole, the through hole is covered with the valve piece through gravity, the diameter of the valve piece is larger than that of the through hole, the fuel tank is provided with a plurality of cabins, fuel flowing is reduced, and in order to further reduce the weight of an airplane, the one-way valve is simpler in structural form; and when being mounted on a machine body structure, the weight is lighter.

Description

Technical Field

[0001] The present application belongs to the field of aircraft fuel systems, and in particular relates to a fuel tank connected with a lightweight one-way valve. Background Art

[0002] In the aircraft fuel system, the aircraft's fuel flows during flight, causing the aircraft's center of gravity to shift, causing the aircraft to vibrate. Summary of the invention

[0003] In order to solve the above problems, the present application provides an oil tank connected by a lightweight one-way valve, wherein the oil tank is divided into a main oil tank and a plurality of sub-oil tanks by a bulkhead;

[0004] The main oil tank is provided with an oil outlet, and a one-way valve is provided on the bulkhead separating the main oil tank from the oil separation tank; the one-way valve comprises a valve pressure plate and a valve sheet; the valve pressure plate and the valve sheet are an integrated structure, and a bending groove is provided between the valve pressure plate and the valve sheet, so that the valve sheet can rotate relative to the valve pressure plate along the bending groove; a through hole is provided on the bulkhead, the valve pressure plate is fixed above the through hole, the valve sheet is covered on the through hole by gravity, and the diameter of the valve sheet is larger than the diameter of the through hole.

[0005] Preferably, a rubber sealing pad is further provided on the valve sheet, and a rubber sealing pad is further provided on the contact surface between the valve sheet and the bulkhead.

[0006] Preferably, the one-way valve is arranged on one side of the main oil tank.

[0007] Preferably, the fuel tank is arranged in a wing of an aircraft.

[0008] Preferably, the floor of the main oil tank is not higher than the floor of the sub-tanks.

[0009] Preferably, the valve sheet is hemispherical, so that its center of gravity is at a certain distance from the bulkhead, so that it can be better attached to the bulkhead.

[0010] The advantages of the present application include: the fuel tank of the present application has multiple compartments, which reduces the flow of fuel, and the one-way valve of the present application can be opened under the action of the positive liquid column pressure to realize the fuel circulation function, and can be closed under the action of the reverse liquid column pressure to realize the anti-backflow function. In order to further reduce the weight of the aircraft, the one-way valve of the present application has a simpler structure; when installed on the fuselage structure, it is lighter. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the connection between the bulkhead and the one-way valve.

[0012] Figure 2 It is a cross-sectional view of a one-way valve.

[0013] Figure 3It is a schematic diagram of the one-way valve structure. DETAILED DESCRIPTION

[0014] In order to make the technical solution and advantages of the present application clearer, the technical solution of the present application will be further described in detail in detail and in detail in conjunction with the accompanying drawings. It can be understood that the specific embodiments described here are only partial embodiments of the present application, which are only used to explain the present application, not to limit the present application. It should be noted that, for the convenience of description, only the parts related to the present application are shown in the accompanying drawings, and other related parts can refer to the general design. In the absence of conflict, the embodiments in the present application and the technical features in the embodiments can be combined with each other to obtain new embodiments.

[0015] like Figure 1-Figure 3 As shown, the present application provides an oil tank connected by a lightweight one-way valve, wherein the oil tank is divided into a main oil tank and a plurality of sub-oil tanks by a bulkhead;

[0016] The main oil tank is provided with an oil outlet, and a one-way valve is provided on the bulkhead separating the main oil tank from the oil sub-tank; the one-way valve includes a valve pressure plate 1 and a valve sheet 2; the valve pressure plate 1 and the valve sheet 2 are an integral structure, and there is a bending groove between the valve pressure plate 1 and the valve sheet 2, so that the valve pressure plate 1 and the valve sheet 2 can rotate relative to the valve pressure plate 1 along the bending groove; the bulkhead has a through hole, the valve pressure plate 1 is fixed above the through hole, the valve sheet 2 is covered on the through hole by gravity, and the diameter of the valve sheet 2 is larger than the diameter of the through hole. A rubber sealing pad 3 is also provided on the valve sheet 2, and a rubber sealing pad 3 is also provided on the contact surface between the valve sheet 2 and the bulkhead. The one-way valve is arranged on one side of the main oil tank. The oil tank is arranged in the wing of the aircraft.

[0017] The floor of the main oil tank is not higher than the floor of the oil sub-tank. The valve plate 2 is hemispherical, so that its center of gravity is at a certain distance from the bulkhead, so that it is better attached to the bulkhead.

[0018] Example 1: See Figure 1 The one-way valve is installed on the fuselage bulkhead using two sets of fasteners. The design of the mounting surface on the bulkhead is shown in Figure 2 The one-way valve structure diagram is shown in Figure 3 It consists of a valve sheet, a valve pressure plate and a rubber sealing pad, wherein the valve sheet and the valve pressure plate are bonded to the rubber sealing pad to form a one-way valve, wherein the rubber sealing pad is designed with a groove to ensure that the valve is easy to open and close; in addition, under the premise of ensuring the bonding strength, a lightening hole can be made at the center position of the rubber sealing pad without affecting the sealing of the one-way valve.

[0019] In this embodiment, when the fuel level on the left side of the one-way valve shown in the figure is higher or equal to the fuel level on the right side, the one-way valve remains closed under the action of gravity to prevent the fuel from flowing in the opposite direction. At the same time, under the pressure difference of the liquid column, the greater the height difference of the liquid level on the left side relative to the right side, the better the reverse sealing of the one-way valve; when the fuel level on the right side of the one-way valve shown in the figure is higher than the fuel level on the left side, the one-way valve opens under the pressure difference of the liquid column, and the fuel in the right compartment area flows to the left compartment area.

[0020] The advantages of the present application include: the fuel tank of the present application has multiple compartments, which reduces the flow of fuel, and the one-way valve of the present application can be opened under the action of the positive liquid column pressure to realize the fuel circulation function, and can be closed under the action of the reverse liquid column pressure to realize the anti-backflow function. In order to further reduce the weight of the aircraft, the one-way valve of the present application has a simpler structure; when installed on the fuselage structure, it is lighter.

[0021] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A fuel tank connected by a lightweight one-way valve, characterized in that: The oil tank is divided into a main oil tank and a plurality of sub-oil tanks by a bulkhead; The main oil tank is provided with an oil outlet, and a one-way valve is provided on the bulkhead separating the main oil tank from the oil sub-tank; the one-way valve comprises a valve pressure plate (1) and a valve sheet (2); the valve pressure plate (1) and the valve sheet (2) are an integral structure, a bending groove is provided between the valve pressure plate (1) and the valve sheet (2), so that the valve pressure plate (1) and the valve sheet (2) can rotate relative to the valve pressure plate (1) along the bending groove; a through hole is provided on the bulkhead, the valve pressure plate (1) is fixed above the through hole, the valve sheet (2) is covered on the through hole by gravity, and the diameter of the valve sheet (2) is larger than the diameter of the through hole.

2. The oil tank connected by a lightweight one-way valve as claimed in claim 1, characterized in that: A rubber sealing pad (3) is also provided on the valve plate (2), and a rubber sealing pad (3) is also provided on the contact surface between the valve plate (2) and the bulkhead.

3. The oil tank connected by a lightweight one-way valve as claimed in claim 1, characterized in that: The one-way valve is arranged on one side of the main oil tank.

4. The oil tank connected by a lightweight one-way valve as claimed in claim 1, characterized in that: The fuel tank is arranged in a wing of an aircraft.

5. The oil tank connected by a lightweight one-way valve as claimed in claim 1, characterized in that: The floor of the main oil tank is not higher than the floor of the sub-tank.

6. The oil tank connected by a lightweight one-way valve as claimed in claim 1, characterized in that: The valve plate (2) is hemispherical, so that its center of gravity is at a certain distance from the bulkhead, so that it can be better attached to the bulkhead.

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