An aviation aluminum alloy tubular component

Abstract

This utility model relates to the field of aviation component technology, specifically to an aviation aluminum alloy tubular component, including an aluminum alloy fuel line. One end of the fuel line has a flange, and the other end has a connector assembly. One end of the connector assembly has a joint assembly. When not connected, the connector assembly and joint assembly prevent fuel flow, thus avoiding accidental fuel leakage and reducing safety risks and environmental pollution. A spiral blade then enters the inner side of the fuel line and breaks up any remaining solid impurities, allowing for fuel flow after connection. This reduces impurity buildup, prevents fuel line blockage, and ensures a stable and continuous fuel supply to the engine. This avoids engine performance degradation due to insufficient fuel supply, thereby extending component life, reducing fuel consumption, and simplifying maintenance.

Description

Technical Field

[0001] This utility model relates to the field of aviation component technology, specifically to an aviation aluminum alloy tubular component. Background Technology

[0002] An aircraft engine is a highly complex and precise thermodynamic machine that provides the power required for aircraft flight. As the heart of an aircraft, it is hailed as the "flower of industry," directly impacting the aircraft's performance, reliability, and economy. It is a crucial indicator of a nation's technological, industrial, and defense capabilities. The fuel inlet pipe connects the fuel supply system to the aircraft engine, pumping fuel from the tank through the fuel pump and into the fuel filter before supplying it to the engine.

[0003] A search revealed Chinese Patent Publication No. CN212027933U, which discloses the following: An aero-engine oil filter inlet pipe includes an inlet pipe with a rubber sleeve fitted around its outer side. A mounting base for fixing the position of the inlet pipe is connected to the outer side of the rubber sleeve. One end of the inlet pipe has an inlet port for connecting to a fuel supply system, and the end of the inlet pipe away from the inlet port has an outlet port for connecting to a fuel filter. A metal pipe is connected to the side of the inlet port near the inlet pipe. A fixing sleeve for fixing the metal pipe and the inlet pipe is threaded onto the outer side of the inlet pipe. An anti-backflow component is provided inside the metal pipe to prevent fuel backflow. The anti-backflow component includes a limiting seat, and a valve ball is provided on the side of the limiting seat away from the inlet pipe. This utility model is designed based on existing needs to prevent fuel backflow in aero-engines, providing protection, good sealing, and convenient maintenance.

[0004] In low-temperature environments, waxy components in aircraft fuel may crystallize and precipitate. In high-temperature environments, high-boiling-point hydrocarbons become less fluid and may even solidify, leading to blockages in fuel lines. This obstructs fuel flow, causes incomplete combustion, and ultimately results in engine failure. Therefore, we propose an aerospace-grade aluminum alloy tubular component. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an aviation-grade aluminum alloy tubular component that solves the problems of insufficient sealing at the interface and blockage of the oil delivery pipe due to impurity accumulation. To achieve the above objectives, this utility model is implemented through the following technical solution: an aviation-grade aluminum alloy tubular component, comprising an aluminum alloy oil delivery pipe, one end of which is provided with a flange, and the other end of which is provided with a connector assembly, and one end of which is provided with a joint assembly; The connector assembly includes a first fixed sleeve, the inner side of which is fixedly connected to the outer wall of the aluminum alloy oil pipe. A first movable sleeve is movably connected to the inner side of the fixed sleeve, and the inner side of the first movable sleeve contacts the outer side of the aluminum alloy oil pipe. A first connector is provided on the end face of the first movable sleeve. A sealing ring is fixedly connected to the inner side of the first connector. A first stationary plate is fixedly connected to the inner side of the first movable sleeve. A second through hole is opened on the end face of the first stationary plate. A ball slider is fixedly connected to the inner side of the first stationary plate. A ball screw is slidably connected to the inner side of the ball slider. A sealing plug is fixedly connected to one end of the ball. A helical blade is fixedly connected to the other end of the ball screw. The connector assembly is configured to cooperate with the connector assembly. The connector assembly includes a connector sleeve, a second stationary piece is fixedly connected to the inner side of the connector sleeve, a trapezoidal block is fixedly connected to the end face of the second stationary piece, a first through hole is opened on the second stationary piece, and the trapezoidal block is configured to cooperate with the sealing plug.

[0006] Preferably, a limiting component is provided between the first fixed sleeve and the first movable sleeve. The limiting component includes a limiting rod, one end of which is fixedly connected to the outside of the first movable sleeve. A sliding hole is provided on the outside of the first fixed sleeve, and a slot is provided on the wall of the sliding hole. The limiting rod contacts and slides with the sliding hole, and the limiting rod is configured to cooperate with the slot.

[0007] Preferably, the surface of the sealing plug is provided with an annular groove, and a sealing ring is fixedly connected to the groove wall of the annular groove. The sealing plug is in sealing contact with the sealing ring through the sealing ring, and the sealing performance between the sealing plug and the inner side of the sealing ring is improved by the sealing ring.

[0008] Preferably, the inner side of the first connector is provided with an internal thread, and the outer side of the connector sleeve is provided with an external thread. The outer side of the connector sleeve is threadedly connected to the inner side of the first connector. The threaded connection installation method improves the stability of the connector assembly and the connector assembly after connection.

[0009] Preferably, the spiral blade is located inside the first movable sleeve. The spiral blade is configured to cooperate with the aluminum alloy oil pipeline. By moving the spiral blade to the inside of the aluminum alloy oil pipeline and briefly achieving a rotation effect, the problem of solid impurities clogging the end face of the aluminum alloy oil pipeline can be solved.

[0010] Preferably, a first spring is sleeved on the surface of the ball screw, and the two ends of the first spring are fixedly connected to the first stationary plate and the side adjacent to the sealing plug, respectively. The first spring is separated from the joint assembly through the connector assembly, and the sealing effect of the sealing plug and sealing ring is achieved by utilizing the lateral elastic potential energy of the first spring.

[0011] Preferably, a second spring is fitted at one end of the aluminum alloy oil pipe. One end of the second spring is fixedly connected to one end of the first movable sleeve, and the other end of the second spring is fixedly connected to the inner side of the first fixed sleeve. The lateral elastic potential energy of the second spring can improve the stability of the connector assembly and the joint assembly during the connection process.

[0012] As can be seen from the above technical solutions, the aerospace aluminum alloy tubular component provided in the embodiments of this specification has at least the following beneficial effects: (1) The present invention prevents accidental fuel leakage and reduces the possibility of safety risks and environmental pollution by setting the connector assembly and joint assembly so that fuel does not flow when not connected. Then, the spiral blade enters the inner side of the aluminum alloy oil pipe and crushes the residual solid impurities. After connection, the internal oil can flow. Reducing the accumulation of impurities can prevent oil pipe blockage and ensure that fuel can be stably and continuously supplied to the engine. This avoids the problem of engine performance decline due to poor fuel supply, thereby extending the life of components, reducing fuel consumption and simplifying maintenance.

[0013] (2) By setting a limiting component, the present invention can suppress the rebound of the second spring by pressing the first movable sleeve and putting the limiting rod into the slot, thereby reducing the gap between the first movable sleeve and the first fixed sleeve, thus improving the overall sealing of the inner aluminum alloy oil pipe, ensuring the stable operation of the fuel supply system, and reducing failures and unexpected interruptions caused by sealing problems. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the connector assembly and the joint assembly in this utility model; Figure 3 This is a cross-sectional view of the connector assembly and the joint assembly in this utility model; Figure 4 This is a schematic diagram of the connector assembly and the limiting assembly in this utility model.

[0015] In the diagram: 1. Aluminum alloy oil pipeline; 3. Flange; 4. Connector assembly; 401. Fixed sleeve No. 1; 402. Movable sleeve No. 1; 403. Connector No. 1; 404. Spiral blade; 405. Sealing plug; 406. Spring No. 1; 407. Ball screw; 408. Sealing ring; 409. Sealing ring; 4010. Stationary plate No. 1; 4011. Spring No. 2; 5. Connector assembly; 501. Connector sleeve; 502. Stationary plate No. 2; 503. Through hole No. 1; 504. Trapezoidal block; 6. Limiting assembly; 601. Sliding hole; 602. Slot; 603. Limiting rod. Detailed Implementation

[0016] 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.

[0017] Example 1 Please see Figures 1-4As shown, an aviation aluminum alloy tubular component includes an aluminum alloy oil pipe 1. One end of the aluminum alloy oil pipe 1 is provided with a flange 3, and the other end is provided with a connector assembly 4. One end of the connector assembly 4 is provided with a joint assembly 5. The connector assembly 4 includes a first fixed sleeve 401, the inner side of which is fixedly connected to the outer wall of the aluminum alloy oil pipe 1. A first movable sleeve 402 is movably connected to the inner side of the fixed sleeve, and the inner side of the first movable sleeve 402 contacts the outer side of the aluminum alloy oil pipe 1. A first joint 403 is provided at the end face of the first movable sleeve 402, and a sealing ring 408 is fixedly connected to the inner side of the first joint 403. A first stationary plate 4010 is fixedly connected to the inner side of the first movable sleeve 402. The first stationary plate 4010 has a second through hole on its end face. A ball block is fixedly connected to the inner side of the first stationary plate 4010. A ball screw 407 is slidably connected to the inner side of the ball block. One end of the ball is fixedly connected to a sealing plug 405. The other end of the ball screw 407 is fixedly connected to a spiral blade 404. The spiral blade 404 is located inside the first movable sleeve 402. The spiral blade 404 is configured to cooperate with the aluminum alloy oil pipe 1. By moving to the inner side of the aluminum alloy oil pipe 1 through the spiral blade 404 and briefly rotating, the problem of solid impurities clogging the end face of the aluminum alloy oil pipe 1 can be solved. The connector assembly 5 is configured to cooperate with the connector assembly 4. An annular groove is formed on the surface of the sealing plug 405. A sealing ring 409 is fixedly connected to the groove wall of the annular groove. The sealing plug 405 is in sealing contact with the sealing ring 408 via the sealing ring 409. The sealing ring 409 improves the sealing performance between the inner side of the sealing plug 405 and the sealing ring 408. A first spring 406 is sleeved on the surface of the ball screw 407. The two ends of the first spring 406 are fixedly connected to the first stationary plate 4010 and the adjacent side of the sealing plug 405, respectively. It is separated from the connector assembly 5 via the connector assembly 4. The sealing effect between the sealing plug 405 and the sealing ring 408 is achieved by utilizing the lateral elastic potential energy of the first spring 406. The first connector 403 has an internal thread on its inner side and an external thread on its outer side. The outer side of the connector sleeve 501 is threaded to the inner side of the first connector 403. The threaded connection improves the sealing performance between the sealing plug 405 and the sealing ring 408. To improve the stability of the connection between the connector assembly 4 and the connector assembly 5, the connector assembly 5 includes a connector sleeve 501. A second stationary plate 502 is fixedly connected to the inner side of the connector sleeve 501. A trapezoidal block 504 is fixedly connected to the end face of the second stationary plate 502. A first through hole 503 is opened on the second stationary plate 502. The trapezoidal block 504 is configured to cooperate with the sealing plug 405. A second spring 4011 is sleeved on one end of the aluminum alloy oil pipe 1. One end of the second spring 4011 is fixedly connected to one end of the first movable sleeve 402. The other end of the second spring 4011 is fixedly connected to the inner side of the first fixed sleeve 401. The lateral elastic potential energy of the second spring 4011 can improve the stability of the connection between the connector assembly 4 and the connector assembly 5.

[0018] Furthermore, by using the connector assembly 4 and the joint assembly 5, fuel flow is prevented when not connected, thus avoiding accidental fuel leakage and reducing the possibility of safety risks and environmental pollution. Then, the spiral blade 404 enters the inner side of the aluminum alloy fuel line 1 and crushes any remaining solid impurities, enabling the flow of internal oil after connection. Reducing impurity accumulation can prevent fuel line blockage and ensure a stable and continuous fuel supply to the engine. This avoids dangerous situations such as engine performance degradation or even engine stalling due to insufficient fuel supply, thereby extending component life, reducing fuel consumption, and simplifying maintenance.

[0019] Example 2 Please see Figures 1-4 As shown, a limiting component 6 is provided between the first fixed sleeve 401 and the first movable sleeve 402. The limiting component 6 includes a limiting rod 603. One end of the limiting rod 603 is fixedly connected to the outside of the first movable sleeve 402. A sliding hole 601 is provided on the outside of the first fixed sleeve 401. A slot 602 is provided on the wall of the sliding hole 601. The limiting rod 603 contacts and slides with the sliding hole 601. The limiting rod 603 and the slot 602 are configured to cooperate.

[0020] Furthermore, by setting the limiting component 6, pressing the first movable sleeve 402 and causing the limiting rod 603 to enter the slot 602 can suppress the rebound of the second spring 4011, thereby reducing the gap between the first movable sleeve 402 and the first fixed sleeve 401, thus improving the overall sealing performance of the inner aluminum alloy oil pipe 1, ensuring the stable operation of the fuel supply system, and reducing malfunctions and unexpected interruptions caused by sealing problems.

[0021] In use, the aviation aluminum alloy tubular component of this utility model involves connecting the first connector 403 at one end of the aluminum alloy oil pipe 1 to the outer thread of the connector sleeve 501. The connector sleeve 501 advances along the threaded side of the connector sleeve 501. At this time, the trapezoidal block 504 moves along with the connector sleeve 501 towards the inner side of the first connector 403. Subsequently, the trapezoidal block 504 compresses the sealing plug 405, which moves within the ball screw 407 via the ball screw slider. Simultaneously, the ball screw 407 rotates the spiral blade 404. The spiral blade 404 moves from the inner side of the first movable sleeve 402 to the inner side of the aluminum alloy oil pipe 1, using the spiral blade 404 to remove any remaining solids from the inner side of the aluminum alloy oil pipe 1. The impurities are crushed, allowing for the flow of internal oil after connection. The threaded connection method improves the stability of the connector assembly 4 and the joint assembly 5 after installation. Pressing the first movable sleeve 402 inside the first fixed sleeve 401 causes the first movable sleeve 402 to squeeze the second spring 4011. The outer side of the first movable sleeve 402 slides in the sliding hole 601 through the limiting rod 603. When it slides to the end of the sliding hole 601, the movable sleeve is rotated, causing the outer limiting rod 603 of the first movable sleeve 402 to enter the slot 602, which suppresses the rebound of the second spring 4011. This reduces the gap between the first movable sleeve 402 and the first fixed sleeve 401, thereby improving the overall sealing of the inner aluminum alloy oil pipe 1.

[0022] The above embodiments are only used to illustrate the present utility model, and are not intended to limit the present utility model. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, all equivalent technical solutions also fall within the scope of the present utility model. The patent protection scope of the present utility model should be defined by the claims.

Claims

1. An aviation aluminum alloy tubular component, comprising an aluminum alloy oil pipe (1), characterized in that: A flange (3) is provided at one end of the aluminum alloy oil pipeline (1), a connector assembly (4) is provided at the other end of the aluminum alloy oil pipeline (1), and a joint assembly (5) is provided at one end of the connector assembly (4). The connector assembly (4) includes a first fixed sleeve (401), the inner side of which is fixedly connected to the outer wall of the aluminum alloy oil pipe (1). A first movable sleeve (402) is movably connected to the inner side of the fixed sleeve. The inner side of the first movable sleeve (402) contacts the outer side of the aluminum alloy oil pipe (1). A first connector (403) is provided on the end face of the first movable sleeve (402). A sealing device is fixedly connected to the inner side of the first connector (403). The ring (408) has a fixed plate (4010) on the inner side of the first movable sleeve (402). The end face of the first fixed plate (4010) has a second through hole. The inner side of the first fixed plate (4010) is fixedly connected to a ball slider. The inner side of the ball slider is slidably connected to a ball screw (407). One end of the ball is fixedly connected to a sealing plug (405). The other end of the ball screw (407) is fixedly connected to a spiral blade (404). The connector assembly (5) is configured to cooperate with the connector assembly (4). The connector assembly (5) includes a connector sleeve (501). A second stationary piece (502) is fixedly connected to the inner side of the connector sleeve (501). A trapezoidal block (504) is fixedly connected to the end face of the second stationary piece (502). A first through hole (503) is opened on the second stationary piece (502). The trapezoidal block (504) is configured to cooperate with the sealing plug (405).

2. The aerospace aluminum alloy tubular component according to claim 1, characterized in that: A limiting component (6) is provided between the first fixed sleeve (401) and the first movable sleeve (402). The limiting component (6) includes a limiting rod (603). One end of the limiting rod (603) is fixedly connected to the outside of the first movable sleeve (402). A sliding hole (601) is provided on the outside of the first fixed sleeve (401). A slot (602) is provided on the wall of the sliding hole (601). The limiting rod (603) contacts and slides with the sliding hole (601). The limiting rod (603) and the slot (602) are configured to cooperate.

3. The aerospace aluminum alloy tubular component according to claim 1, characterized in that: The surface of the sealing plug (405) is provided with an annular groove, and a sealing ring (409) is fixedly connected to the groove wall of the annular groove. The sealing plug (405) is in sealing contact with the sealing ring (408) through the sealing ring (409).

4. The aerospace aluminum alloy tubular component according to claim 1, characterized in that: The first connector (403) has an internal thread on its inner side, and the connector sleeve (501) has an external thread on its outer side. The outer side of the connector sleeve (501) is connected to the inner thread of the first connector (403).

5. The aerospace aluminum alloy tubular component according to claim 1, characterized in that: The spiral blade (404) is located inside the first movable sleeve (402), and the spiral blade (404) is configured in conjunction with the aluminum alloy oil pipeline (1).

6. The aerospace aluminum alloy tubular component according to claim 1, characterized in that: A first spring (406) is fitted on the surface of the ball screw (407), and the two ends of the first spring (406) are fixedly connected to the first stationary plate (4010) and the sealing plug (405) respectively.

7. The aerospace aluminum alloy tubular component according to claim 1, characterized in that: One end of the aluminum alloy oil pipe (1) is fitted with a second spring (4011), one end of the second spring (4011) is fixedly connected to one end of the first movable sleeve (402), and the other end of the second spring (4011) is fixedly connected to the inner side of the first fixed sleeve (401).

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