Grating covering cap for ventilating hose of aircraft engine

Abstract

The utility model belongs to the field of structural design of aircraft covering caps, and particularly relates to a grille covering cap for a ventilation hose of an aircraft engine. The covering cap comprises a box type connector, the box type connector is provided with a round pipe section and a box section, and the round pipe section is connected with the ventilation hose; the grid opening cover is provided with a grid part and a connecting part, the grid part is located in the center of the connecting part, the grid part protrudes out of the connecting part, the protruding thickness is equal to the thickness of an aircraft panel, and the inner side of the connecting part is fixed to the box section through welding; and the connecting part is connected with the aircraft panel through a bolt assembly. According to the grid covering cap for the ventilation hose of the aircraft engine, the fatigue characteristic, invisibility and supportability of the connection point of the ventilation hose and an aircraft can be improved, and the performance of the aircraft is improved while manpower and material resources are reduced.

Description

Technical Field

[0001] The present application belongs to the field of aircraft cover structure design, and in particular relates to an aircraft engine ventilation hose grille cover. Background Art

[0002] Aircraft engines are equipped with ventilation systems to discharge high-temperature engine oil vapor to the outside of the aircraft through hoses. The existing connection between the exhaust pipe and the aircraft structure often uses a clamp to fix the pipe on the inner surface of the aircraft, and the outer end of the pipe directly extends out of the outer surface of the aircraft. This fixing method has the following disadvantages:

[0003] (1) Poor fatigue properties. This type of fixing causes the pipeline exposed on the aircraft surface to be affected by alternating aerodynamic loads for a long time, resulting in large vibrations. Long-term use may cause fatigue fracture of the pipeline and the connectors at its fixing points;

[0004] (2) Poor stealth. New aircraft have higher stealth requirements, and the pipelines exposed outside the aircraft will seriously affect the stealth of the aircraft, resulting in poor stealth of the aircraft, which can be easily detected by enemy radar, affecting mission safety;

[0005] (3) Poor security. When the high-temperature lubricating oil vapor encounters the cold air outside the aircraft, it will condense into liquid lubricating oil and adhere to the outer wall of the pipe. It may flow back into the aircraft body, contaminating the aircraft structure and causing additional cleaning work.

[0006] Therefore, it is desired to have a technical solution to overcome or at least alleviate at least one of the above-mentioned defects of the prior art. Utility Model Content

[0007] The purpose of the present application is to provide a grille cover for an aircraft engine ventilation hose to solve the problems of poor fatigue characteristics, stealth and security of existing aircraft engine ventilation ducts.

[0008] The technical solution of this application is:

[0009] A grille cover for a ventilation hose of an aircraft engine, comprising:

[0010] A box-type joint, the box-type joint having a round pipe section and a box section, the round pipe section being connected to the ventilation hose;

[0011] A grille opening cover, wherein the grille opening cover comprises a grille portion and a connecting portion, wherein the grille portion is located at the center of the connecting portion, the grille portion protrudes from the connecting portion, and the protruding thickness is equal to the thickness of the aircraft wall panel, the inner side of the connecting portion is fixed to the box section by welding, and the connecting portion is connected to the aircraft wall panel by a bolt assembly.

[0012] In at least one embodiment of the present application, the grid portion is hexagonal.

[0013] In at least one embodiment of the present application, a plurality of rows of diamond-shaped grilles are provided on the grille portion.

[0014] In at least one embodiment of the present application, the connecting portion is octagonal.

[0015] In at least one embodiment of the present application, the bolt assembly includes a bolt and a double-ear support plate nut, the double-ear support plate nut is installed on the inner side of the connecting part by means of screws, and the bolt passes through the mounting holes on the aircraft wall panel and the connecting part in sequence and is connected to the double-ear support plate nut.

[0016] The utility model has at least the following beneficial technical effects:

[0017] The aircraft engine ventilation hose grille cover of the present application can improve the fatigue characteristics, stealth and security of the connection point between the ventilation hose and the aircraft, thereby improving aircraft performance while reducing manpower and material resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of a grille cover of an aircraft engine ventilation hose according to one embodiment of the present application from one perspective;

[0019] Figure 2 This is a schematic diagram from another perspective of the aircraft engine ventilation hose grille cover according to one embodiment of the present application.

[0020] in:

[0021] 1-Box joint; 2-Grille cover. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the implementation of this application clearer, the technical scheme in the embodiment of this application will be described in more detail below in conjunction with the drawings in the embodiment of this application. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of this application, not all of them. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain this application, and should not be construed as limitations on this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The embodiments of this application are described in detail below in conjunction with the drawings.

[0023] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present application.

[0024] The following is combined with Figure 1 to Figure 2 This application is described in further detail.

[0025] The present application provides a grille cover for a ventilation hose of an aircraft engine, comprising a box-type joint 1 connected to the hose, and a grille cover 2 conforming to the outer surface of the aircraft.

[0026] like Figure 1-2 As shown, the box joint 1 has an integrally formed round tube section and a box section, the round tube section is connected to the ventilation hose, and the box section is used to connect to the grille cover 2. It is understandable that the round tube section and the ventilation hose can be integrally formed, or the round tube section and the hard joint on the ventilation hose can be threadedly connected by tightening the outer nut. The grille cover 2 has a grille portion and a connection portion, the grille portion is located at the center of the connection portion, a grille is arranged on the grille portion, the thickness of the grille portion is greater than the thickness of the connection portion, so that the grille portion protrudes from the connection portion to one side of the aircraft wall panel, and the protruding thickness is equal to the thickness of the aircraft wall panel, and an opening adapted to the grille portion is opened on the aircraft wall panel, the inner side of the connection portion is fixed to the box section by welding, and the connection portion is connected to the aircraft wall panel by a bolt assembly, and after the grille cover 2 is installed on the aircraft wall panel, it conforms to the outer surface of the aircraft.

[0027] The aircraft engine ventilation hose grille cover of the present application designs the bottom of the box-type joint 1 connected to the ventilation hose as a box section with a box-type structure, which has strong sealing performance, can prevent the backflow of lubricating oil, and improve security.

[0028] In a preferred embodiment of the present application, the grille portion of the grille cover 2 adopts a hexagonal structure that is more in line with the stealth design. Preferably, multiple rows of diamond grilles are arranged on the grille portion, which can greatly improve the stealth performance of the aircraft. In this embodiment, the connecting portion adopts an octagonal structure, and the connecting portion is connected to the aircraft wall panel by 8 groups of bolt assemblies, wherein the bolt assembly includes bolts and double-ear support plate nuts, and the double-ear support plate nuts are installed on the inner side of the connecting portion by screws, and the bolts are sequentially passed through the mounting holes on the aircraft wall panel and the connecting portion and then connected to the double-ear support plate nuts.

[0029] In order to improve the manufacturability, the aircraft engine ventilation hose grille cover of the present application is designed to have a box-type joint 1 and a grille cover 2 as separate parts, which are fixed by welding and are easy to produce.

[0030] The aircraft engine ventilation hose grille cover of the present application has the following advantages:

[0031] 1. Good fatigue properties. The cover of the present application conforms to the outer surface of the aircraft and will not be affected by aerodynamic loads.

[0032] Second, good stealth. The part exposed on the surface of the fuselage is designed as a hexagonal cover, and a diamond grille is designed for exhaust. Compared with the existing solution where the pipeline protrudes from the surface of the fuselage, the stealth is greatly improved;

[0033] 3. Good security. The box-type structure is designed to facilitate the collection of condensed lubricating oil and has good sealing to prevent the lubricating oil from flowing back into the aircraft.

[0034] Compared with the prior art, the aircraft engine ventilation hose grille cover of the present application has the advantages of being more efficient, more convenient and having higher performance.

[0035] 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. An aircraft engine ventilation hose grille cover, characterized in that: include: A box-type joint (1), the box-type joint (1) comprising a round pipe section and a box section, the round pipe section being connected to a ventilation hose; A grille opening cover (2), the grille opening cover (2) comprising a grille portion and a connecting portion, the grille portion being located at the center of the connecting portion, the grille portion protruding from the connecting portion, and the protruding thickness being equal to the thickness of an aircraft wall panel, the inner side of the connecting portion being fixed to the box section by welding, and the connecting portion being connected to the aircraft wall panel by a bolt assembly.

2. The aircraft engine ventilation hose grille cover according to claim 1, characterized in that: The grid portion is hexagonal.

3. The aircraft engine ventilation hose grille cover according to claim 2, characterized in that: The grid portion is provided with a plurality of rows of diamond-shaped grids.

4. The aircraft engine ventilation hose grille cover according to claim 1, characterized in that: The connecting portion is octagonal.

5. The aircraft engine ventilation hose grille cover according to claim 1, characterized in that: The bolt assembly includes a bolt and a double-ear support plate nut, wherein the double-ear support plate nut is installed on the inner side of the connecting portion by means of a screw, and the bolt passes through the mounting holes on the aircraft wall panel and the connecting portion in sequence and is connected to the double-ear support plate nut.

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