Anti-protrusion structure of oil tank compartment

Abstract

The utility model belongs to the technical field of aviation, and particularly relates to an oil tank cabin anti-protruding structure which comprises a frame plate (3) forming the wall face of an oil tank cabin, a T-shaped profile (6) fixedly installed on the inner side face of the frame plate (3), a foam strip (1) with a fan-shaped section and a soft oil tank (2). The foam strips (1) are arranged on the two sides of the T-shaped profile (6), so that the cross section of the T-shaped profile (6) is filled into a semicircular shape; and the wall surface of the soft oil tank (2) is attached to the inner surface of the frame plate (3) and an arc-shaped surface formed by the T-shaped section bar (6) and the foam strip (1).

Description

TECHNICAL FIELD

[0001] The application belongs to the field of aviation technology, and particularly relates to a protrusion-preventing structure for an oil tank cabin. BACKGROUND

[0002] For an aircraft oil tank cabin provided with a soft oil tank, protrusion structures are encountered in structural arrangement, such as a frame behind which is the oil tank cabin, and in front of which are system pipelines and operating devices, etc. The longitudinal and transverse stiffeners cannot be arranged and can only be arranged in the oil tank cabin area behind the frame. The protrusion structures are prone to wear the soft oil tank, especially under the oil pressure load in flight, and are extremely prone to wear by extrusion with the protrusion structures. How to eliminate the influence of the protrusion structures is a difficult problem in the structural design of the oil tank cabin. The protrusion structures are smoothly transitioned by laying light foams, so that the soft oil tank in the oil tank cabin is not worn by the protrusion structures, and the weight is light and the cost is low. SUMMARY

[0003] In order to solve the above problems, the application provides a protrusion-preventing structure for an oil tank cabin, comprising:

[0004] a frame plate (3) forming a wall surface of the oil tank cabin, a T-shaped section (6) fixedly installed on the inner side of the frame plate (3), a foam strip (1) in a sector cross section, and a soft oil tank (2);

[0005] The foam strip (1) is arranged on both sides of the T-shaped section (6), so that the cross section of the T-shaped section (6) is filled to be semicircular.

[0006] The wall surface of the soft oil tank (2) is attached to the inner surface of the frame plate (3) and the arc surface formed by the T-shaped section (6) and the foam strip (1).

[0007] Preferably, the T-shaped section (6) comprises a rim plate and a vertical plate located at the middle of the rim plate, a plurality of through holes are formed in the rim plate on both sides of the vertical plate, the frame plate (3) has through holes corresponding to the through holes of the rim plate, and a bolt (4) passes through the through holes of the rim plate and the frame plate (3) to fix the T-shaped section (6).

[0008] Preferably, the length of the vertical plate of the T-shaped section (6) is half the width of the rim plate.

[0009] Preferably, the two end surfaces of the rim plate are bonded to the soft oil tank (2) by a sealing glue (5).

[0010] The protrusion part of the oil tank cabin is prone to wear the soft oil tank. The protrusion part is smoothly rounded by the light foams, so that the soft oil tank is installed, the weight is reduced, the space occupied is small, and the cost is low. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 The protrusion-preventing structure for the oil tank cabin is a preferred embodiment of the application. DETAILED DESCRIPTION

[0012] In order to make the technical solutions of the present application and the advantages thereof clearer, the technical solutions of the present application will be further clearly and completely described below in conjunction with the drawings. It should be understood that the specific embodiments described herein are only partial embodiments of the present application, and are only used to explain the present application, rather than limit the present application. It should be noted that, for the convenience of description, only parts related to the present application are shown in the drawings, and other related parts can be referred to the general design. In the case of no conflict, the embodiments in the present application and the technical features in the embodiments can be combined to obtain new embodiments.

[0013] As shown in the drawings, the present application provides an oil tank cabin anti-protrusion structure, comprising: Figure 1

[0014] a frame plate (3) forming an oil tank cabin wall, a T-shaped section (6) fixedly installed on the inner side of the frame plate (3), a foam strip (1) with a fan-shaped cross section, and a soft oil tank (2);

[0015] The foam strip (1) is arranged on both sides of the T-shaped section (6), so that the cross section of the T-shaped section (6) is filled to be semicircular;

[0016] The wall surface of the soft oil tank (2) is attached to the inner surface of the frame plate (3) and the arc surface formed by the T-shaped section (6) and the foam strip (1).

[0017] Preferably, the T-shaped section (6) comprises a rim plate and a vertical plate located at the middle of the rim plate, a plurality of through holes are formed on the rim plate on both sides of the vertical plate, the frame plate (3) has through holes corresponding to the through holes of the rim plate, and the T-shaped section (6) is fixed by the bolts (4) passing through the through holes of the rim plate and the frame plate (3).

[0018] Preferably, the length of the vertical plate of the T-shaped section (6) is half of the width of the rim plate.

[0019] Preferably, the two end surfaces of the rim plate are bonded to the soft oil tank (2) by the sealing glue (5).

[0020] An oil tank cabin is first surrounded by a plurality of frame plates 3 to form an oil tank cabin with an oil port, the oil tank cabin is reinforced by a plurality of T-shaped sections, the frame plate 3 is screwed with the T-shaped section 6 by the bolt 4, and the foam 1 is bonded by glue, so that the shape of the foam is circular arc and matched with the soft oil tank 2, the T-shaped section 6 and the frame plate 3 are sealed by the sealing glue 5, and the influence of the protrusion of the T-shaped section 6 on the soft oil tank 2 is eliminated. Then the soft oil tank 2 is placed in the cabin formed by the frame plates, the inlet of the soft oil tank 2 is connected with the inlet of the oil tank cabin, and the shape of the soft oil tank 2 is variable, which is a flexible material.

[0021] The present application smoothes the protruding part by light foam, which not only ensures the installation of the soft oil tank, but also reduces the weight, occupies small space and has low cost. ​

[0022] The above description is only specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any changes or replacements within the technical scope disclosed by the present application can be easily thought by those skilled in the art, and should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A fuel tank anti-protrusion structure, comprising: The frame plate (3) forming the tank wall, the T-shaped profile (6) fixedly installed on the inner side of the frame plate (3), the fan-shaped foam strip (1), and the soft tank (2); Foam strips (1) are placed on both sides of the T-profile (6) so that the cross section of the T-profile (6) is filled into a semi-circular shape; The soft oil tank (2) is attached to the inner surface of the frame plate (3) and the arc-shaped surface formed by the T-shaped material (6) and the foam strip (1).

2. The anti-protrusion structure for the fuel tank compartment as described in claim 1, characterized in that, The T-profile (6) includes a flange and a vertical plate located in the middle of the flange. The flanges on both sides of the vertical plate have multiple through holes. The frame plate (3) has through holes corresponding to the through holes of the flange. Bolts (4) pass through the through holes of the flange and the frame plate (3) to fix the T-profile (6).

3. The anti-protrusion structure for the fuel tank compartment as described in claim 2, characterized in that, The vertical plate length and height of the T-profile (6) is half the width of the edge plate.

4. The anti-protrusion structure for the fuel tank compartment as described in claim 1, characterized in that, The two ends of the flange are bonded to the soft oil tank (2) with sealant (5).

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