Air inlet cover of aero-engine

Abstract

The utility model relates to the technical field of air inlet covers, and discloses an aero-engine air inlet cover which comprises an air inlet cover body, one end of the outer wall of the air inlet cover body is fixedly connected with a limiting ring, the outer wall of the air inlet cover body is provided with two blocking covers, the two blocking covers are connected through a hinge, and the limiting ring is fixedly connected with the limiting ring. Limiting grooves matched with the limiting rings in shape are formed in the inner walls of the plugging covers, limiting plates are symmetrically and fixedly connected to the bottom of one end of the plugging cover on one side, and clamping grooves are formed in the bottom ends of the two limiting plates. Through the structures such as a limiting groove, a limiting ring, a plugging cover, a limiting plate, a clamping column, a tension spring and a connecting rod, the effects of plugging an inlet of the air inlet cover body 1, preventing birds from entering and improving safety are achieved, and the problems that a plugging structure is not arranged on the outer side of a traditional air inlet cover, so that the birds enter the air inlet cover, and the safety of the air inlet cover is affected are solved. And when the engine is started, the engine is damaged, and the safety is influenced.

Description

Technical Field

[0001] This utility model relates to the field of air intake cover technology, specifically to an air intake cover for an aircraft engine. Background Technology

[0002] The aircraft engine inlet cowl, more professionally known as the inlet fairing, is an important component of an aircraft engine. The inlet fairing is usually located at the front of the aircraft engine and is presented as a cone-shaped object.

[0003] In the existing technology, when not in use, the air intake cowling of an aircraft engine is generally placed directly on the outside without any sealing structure on the outside. As a result, birds can enter the air intake cowling and damage the engine when it is started, affecting safety. Utility Model Content

[0004] The purpose of this invention is to provide an aircraft engine air intake cowling to solve the problem that existing air intake cowlings do not have a sealing structure on the outside, which allows birds to enter the air intake cowling and cause damage to the engine when it is started, thus affecting safety.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an air intake cowl for an aircraft engine, comprising an air intake cowl body, a limiting ring fixedly connected to one end of the outer wall of the air intake cowl body, a sealing cover provided on the outer wall of the air intake cowl body, two sealing covers being provided, the two sealing covers being connected by a hinge, a limiting groove adapted to the shape of the limiting ring being provided on the inner wall of the sealing cover, a limiting plate symmetrically fixedly connected to the bottom of one end of one sealing cover, a slot being provided at the bottom of each of the two limiting plates, and grooves symmetrically provided at the bottom of one end of the other sealing cover, with a locking post slidingly penetrating the bottom of each of the two grooves, the two locking posts being respectively disposed in the two locking grooves.

[0006] Preferably, a connecting rod is fixedly connected to the bottom end of the two locking posts, and multiple tension springs are fixedly connected between the connecting rod and the sealing cover on the other side.

[0007] Preferably, the air intake hood body is provided with a reinforcing layer, a fireproof layer, a sound insulation layer and a high temperature resistant layer in sequence inside.

[0008] Preferably, the reinforcing layer is made of glass fiber, and the fireproof layer is made of flame-retardant cotton.

[0009] Preferably, the high-temperature resistant layer is made of ceramic material, and the sound insulation layer is made of sound insulation cotton.

[0010] Preferably, one end of the locking post is provided with an inclined surface, and the limiting plate contacts the inclined surface and performs a squeezing operation on the locking post.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1) The aircraft engine intake cowling, through the cooperation of the limiting groove, limiting ring, sealing cover, limiting plate, locking post, tension spring and connecting rod, completes the limiting and fixing of the limiting plate, thus sealing the inlet of the intake cowling body 1, preventing birds from entering and improving safety.

[0013] 2) The aircraft engine intake cowling has an enhanced strength through a reinforcing layer, a fireproof layer to prevent fires, a sound insulation layer to reduce engine noise, and a high-temperature resistant layer to improve its overall high-temperature resistance, thus extending its service life. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of an aero-engine air intake cowling according to the present invention;

[0015] Figure 2 This is an exploded view of an aircraft engine air intake cowling according to the present invention;

[0016] Figure 3 This utility model relates to an air intake cowling for an aircraft engine. Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 This is a cutaway diagram of an aircraft engine air intake cowling according to the present invention;

[0018] Figure 5 This is a cross-sectional view of the air intake cover body of an aircraft engine according to the present invention.

[0019] In the diagram: 1. Air intake cover body; 2. Limiting ring; 3. Sealing cover; 4. Limiting groove; 5. Limiting plate; 6. Slot; 7. Groove; 8. Locking post; 9. Connecting rod; 10. Tension spring; 11. Reinforcing layer; 12. Fireproof layer; 13. Sound insulation layer; 14. High temperature resistant layer. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1

[0022] Combination Figures 1-5An aero-engine intake cowl includes an intake cowl body 1. A limiting ring 2 is fixedly connected to one end of the outer wall of the intake cowl body 1. A sealing cover 3 is provided on the outer wall of the intake cowl body 1. There are two sealing covers 3, which are connected by a hinge. The inner wall of the sealing cover 3 is provided with a limiting groove 4 that matches the shape of the limiting ring 2. A limiting plate 5 is symmetrically fixedly connected to the bottom of one end of one sealing cover 3. A slot 6 is provided at the bottom of each of the two limiting plates 5. A groove 7 is symmetrically provided at the bottom of one end of the other sealing cover 3. A locking post 8 slides through the bottom of each of the two grooves 7. The two locking posts 8 are respectively set in the two slots 6. A connecting rod 9 is fixedly connected to the bottom of the two locking posts 8. Multiple tension springs 10 are fixedly connected between the connecting rod 9 and the other sealing cover 3. A slope is provided at one end of the locking post 8. The limiting plate 5 contacts the slope and performs a pressing operation on the locking post 8.

[0023] Specifically, the sealing cover 3 can be placed on the outer wall of the air intake cover body 1 through the cooperation of the limiting ring 2 and the limiting groove 4. Then the sealing covers 3 on both sides are closed. During the closing process, the limiting plate 5 disengages from the inclined surface of the locking post 8, thereby squeezing the locking post 8 and making it move downward. After it is installed in place, the elasticity of the tension spring 10 can make the locking post 8 lock in the locking groove 6, completing the limiting operation. Therefore, it can be sealed when the engine is not running to prevent birds from entering the aircraft engine and thus protect it.

[0024] Example 2

[0025] See Figure 5 Furthermore, based on Embodiment 1, the air intake hood body 1 is further provided with a reinforcing layer 11, a fireproof layer 12, a sound insulation layer 13 and a high-temperature resistant layer 14 in sequence inside. The reinforcing layer 11 is made of glass fiber, the fireproof layer 12 is made of flame-retardant cotton, the high-temperature resistant layer 14 is made of ceramic material, and the sound insulation layer 13 is made of sound insulation cotton.

[0026] Specifically, glass fiber is a fiber formed by rapidly stretching and cooling molten glass, possessing characteristics such as high strength, high modulus, heat resistance, and corrosion resistance. Flame-retardant cotton has the characteristics of permanent flame retardancy, moisture absorption, and breathability. When burning, it produces only a small amount of smoke and does not release toxic gases, exhibiting a self-extinguishing effect. Ceramics have excellent high-temperature resistance and heat insulation properties, while also possessing certain mechanical properties and chemical resistance. Sound insulation cotton is a sponge formed through special treatment, filled with tiny pores and a semi-open structure, which can absorb a large amount of incoming sound wave energy, thus allowing for an adjustable service life.

[0027] In actual operation, first align the limiting groove 4 with the limiting ring 2 and lock it onto the limiting ring 2. Then, put the sealing covers 3 on both sides together. At the same time, the limiting plate 5 contacts the inclined surface on the locking post 8, which will squeeze the locking post 8. After the limiting plate 5 is installed in place, the elastic action of the tension spring 10 can make the locking post 8 lock into the locking groove 6, thus completing the limiting and fixing of the limiting plate 5. Therefore, the inlet of the air intake cover body 1 can be blocked to prevent birds from entering and improve safety.

[0028] Furthermore, the reinforcing layer 11 increases the overall strength, the fireproof layer 12 prevents fires, the sound insulation layer 13 reduces engine noise, and the high-temperature resistant layer 14 improves the overall high-temperature resistance, thus extending the overall service life.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An aircraft engine inlet cowling, comprising an inlet cowling body (1), characterized in that: One end of the outer wall of the air intake hood body (1) is fixedly connected to a limiting ring (2). The outer wall of the air intake hood body (1) is provided with a sealing cover (3). There are two sealing covers (3). The two sealing covers (3) are connected by a hinge. The inner wall of the sealing cover (3) is provided with a limiting groove (4) that matches the shape of the limiting ring (2). One end of the sealing cover (3) is symmetrically fixedly connected to a limiting plate (5). The bottom of the two limiting plates (5) is provided with a slot (6). The bottom of the other end of the sealing cover (3) is symmetrically provided with a groove (7). The bottom of the two grooves (7) is slidably penetrated by a locking post (8). The two locking posts (8) are respectively set in the two slots (6).

2. The aircraft engine inlet cowling according to claim 1, characterized in that: Two of the locking pins (8) are fixedly connected to the bottom ends of a connecting rod (9), and multiple tension springs (10) are fixedly connected between the connecting rod (9) and the sealing cover (3) on the other side.

3. The aircraft engine inlet cowling according to claim 1, characterized in that: The air intake hood body (1) is provided with a reinforcing layer (11), a fireproof layer (12), a sound insulation layer (13), and a high temperature resistant layer (14) in sequence inside.

4. The aircraft engine inlet cowling according to claim 3, characterized in that: The reinforcing layer (11) is made of glass fiber, and the fireproof layer (12) is made of flame-retardant cotton.

5. An aircraft engine inlet cowling according to claim 3, characterized in that: The high-temperature resistant layer (14) is made of ceramic material, and the sound insulation layer (13) is made of sound insulation cotton.

6. The aero-engine inlet cowling according to claim 1, characterized in that: One end of the locking post (8) is provided with an inclined surface, and the limiting plate (5) contacts the inclined surface and performs a squeezing operation on the locking post (8).

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