Airplane pressure refueling connector

Abstract

The utility model discloses an airplane pressure refueling joint, including: joint body, pressure stabilizing valve, rubber hose joint, butt joint copper disc, valve subassembly and butt joint handle, joint body and pressure stabilizing valve are connected through fastener and mutually conducted, rubber hose joint is provided on the pressure stabilizing valve, butt joint copper disc is provided on joint body, butt joint handle is provided on the butt joint copper disc, the valve subassembly is provided on the butt joint copper disc, and the butt joint handle is provided on the butt joint copper disc. The filter screen assembly is arranged on the rubber hose connector, the valve assembly is arranged in the connector body and used for controlling opening and closing of the connector body, the butt joint handle is installed on the surface of the connector body, and a bidirectional impurity collecting device is arranged in the rubber hose connector. According to the invention, impurities filtered out of an oil way during refueling can be collected, impurities in an oil tank can be collected during oil pumping of an airplane, unified cleaning is facilitated, and secondary pollution to other aircrafts is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of aircraft refueling, and in particular to an aircraft pressure refueling connector. Background Art

[0002] The refueling connector is a component used to connect the oil pipeline to the aircraft's underwing connector when refueling the aircraft at the airport. In addition, the refueling connector is usually also used to pump oil from the aircraft's fuel tank. Its safety and reliability during use are very important.

[0003] In the prior art, a filter assembly is provided in the aircraft pressure refueling joint, which is mainly used to filter impurities in aviation fuel during refueling. Therefore, the net bag-shaped opening of the filter assembly is always facing the direction of the fuel inlet during refueling, and the filtered impurities are gathered in the net bag; when the aircraft is performing an oil pumping operation, the oil in the fuel tank also needs to be filtered, but because the opening of the filter assembly is facing the fuel inlet during refueling, the impurities in the aircraft fuel tank cannot be well collected during the oil pumping operation, which makes subsequent cleaning difficult. In addition, impurities that are not completely cleaned may enter the fuel tanks of other aircraft with subsequent refueling work and cause further pollution. Therefore, there is room for improvement. Summary of the invention

[0004] In view of the above problems, the present application proposes an aircraft pressure refueling connector, which can collect impurities filtered out of the oil circuit during refueling and impurities in the fuel tank during oil pumping by arranging a bidirectional impurity collection device on the filter assembly, so as to facilitate unified cleaning without causing secondary pollution to other aircraft; the aircraft pressure refueling connector is specifically implemented by the following technical solutions:

[0005] An aircraft pressure refueling connector comprises: a connector body, a pressure regulating valve, a hose connector, a docking copper disk, a valve assembly and a docking handle, wherein the connector body and the pressure regulating valve are connected by fasteners and are in conduction with each other, the hose connector is arranged on the pressure regulating valve, the docking copper disk is arranged on the connector body, the valve assembly is arranged in the connector body, and the valve assembly is used to control the conduction and closing of the connector body, the docking handle is installed on the surface of the connector body, and a bidirectional impurity collection device is arranged in the hose connector.

[0006] It is further provided that the inner wall at the opening of the hose joint is provided with a limit groove opening toward the outer end, the bidirectional impurity collection device includes a filter, a bracket and a support rod, the bracket is provided in a ring shape, and the bracket is limitedly matched with the limit groove, the bracket is integrally provided with a support rod, the filter is sleeved on the bracket and extends toward the inside of the hose joint, the filter is provided with a bidirectional bucket-shaped structure with a W-shaped cross-section, the filter includes a first collecting portion opening toward the outer end of the hose joint and a second collecting portion opening toward the inner end of the hose joint, through this provision, the filter can filter and collect impurities in the oil in both the refueling and oil extraction states.

[0007] It is further provided that a reinforcing ring is provided at the bending portion between the first collecting portion and the second collecting portion. Through this provision, the strength of the filter is enhanced to prevent deformation of the filter caused by excessive pressure during refueling or oil suction.

[0008] It is further arranged that a plurality of annular limiting grooves are arranged on the outer circumference of the hose joint, and a sealing ring is arranged in the annular limiting groove. Through this arrangement, when the hose joint is connected to the hose, the sealing performance is strong and no oil leakage occurs.

[0009] It is further provided that the edge portion of the annular limiting groove is provided with a triangular protrusion with an inclined surface facing the outer end of the hose joint. Through this arrangement, the guiding effect of the inclined surface facilitates the installation between the hose joint and the hose.

[0010] It is further arranged that a guard plate is provided on the surface of the pressure-stabilizing valve corresponding to the inner end position of the hose joint. Through this arrangement, the limiting effect makes the overall structure more stable.

[0011] It is further configured that a rubber protective cover and a rubber sheath are provided on the joint body, the rubber sheath is sleeved on the outer periphery of the outer end of the joint body, and the rubber protective cover is sleeved on the outer periphery of the rubber sheath. Through this configuration, the end of the joint body is protected to prevent loss caused by hard friction when connecting the oil filling port, thereby improving the overall service life.

[0012] It is further configured that the valve assembly includes a valve handle, a connecting rod and a valve seat, the valve handle is arranged on the surface of the joint body, the connecting rod and the valve seat are arranged inside the joint body, and the valve handle, the connecting rod and the valve seat are transmission-connected. Through this configuration, the function of controlling opening and closing by the valve handle is realized.

[0013] It is further configured that a first limiting groove is provided on a contact surface of the valve seat and the rubber protective cover, and a first sealing ring is provided in the first limiting groove. Through this configuration, the sealing performance of the connection part is further enhanced.

[0014] It is further provided that a second limiting groove is provided on the contact surface between the valve seat and the inner wall of the joint body, and a second sealing ring is provided in the second limiting groove. Through this provision, the sealing performance of the connection part is further enhanced.

[0015] The aircraft pressure refueling connector described above, by configuring the traditional bucket-shaped filter to be a bidirectional bucket-shaped structure with a W-shaped cross-section, forms a first collecting part and a second collecting part respectively, which can collect impurities in two directions during refueling and oil extraction, facilitating subsequent cleaning, and greatly controlling the purity of the fuel in the tank from a physical filtration level. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 A front cross-sectional view of an aircraft pressure refueling connector provided by an embodiment of the present application;

[0018] Figure 2 Aircraft pressure refueling connector provided by the embodiment of the present application Figure 1 Enlarged view of part A in the middle;

[0019] Figure 3 A top view of an aircraft pressure refueling connector filter provided in an embodiment of the present application.

[0020] Among them, the reference numerals in the figure are:

[0021] 1. Connector body; 2. Pressure regulating valve; 3. Hose connector; 4. Docking copper plate; 5. Valve assembly; 6. Docking handle; 7. Two-way impurity collection device; 8. Limiting groove; 9. Filter; 10. Bracket; 11. Support rod; 12. First collecting part; 13. Second collecting part; 14. Reinforcement ring; 15. Annular limiting groove; 16. Sealing ring; 17. Triangular protrusion; 18. Guard plate; 19. Rubber protective cover; 20. Rubber sleeve; 21. Valve handle; 22. Connecting rod; 23. Valve seat; 24. First limiting groove; 25. First sealing ring; 26. Second limiting groove; 27. Second sealing ring. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0023] The appearance of the above words in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0024] The present application is further described with reference to the accompanying drawings and specific implementation methods:

[0025] Please also read Figures 1 to 3 , an aircraft pressure refueling connector, comprising: a connector body 1, a pressure regulating valve 2, a hose connector 3, a docking copper plate 4, a valve assembly 5 and a docking handle 6, the connector body 1 and the pressure regulating valve 2 are connected by fasteners and are connected to each other, the hose connector 3 is arranged on the pressure regulating valve 2, the docking copper plate 4 is arranged on the connector body 1, the valve assembly 5 is arranged in the connector body 1, and the valve assembly 5 is used to control the connection and closing of the connector body 1, the docking handle 6 is installed on the surface of the connector body 1, and a two-way impurity collection device 7 is arranged in the hose connector 3.

[0026] See also Figures 1 to 3In this embodiment, the inner wall of the opening of the hose joint 3 is provided with a limiting groove 8 opening toward the outer end, the bidirectional impurity collecting device 7 includes a filter 9, a bracket 10 and a support rod 11, the bracket 10 is arranged in an annular shape, and the bracket 10 is limitedly matched with the limiting groove 8, the bracket 10 is integrally provided with a support rod 11, the filter 9 is sleeved on the bracket 10, and extends to the inside of the hose joint 3, the filter 9 is arranged as a bidirectional bucket-shaped structure with a W-shaped cross section, the filter 9 includes a first collecting portion 12 opening toward the outer end of the hose joint 3 and a second collecting portion 13 opening toward the inner end of the hose joint 3, by such an arrangement, it is achieved that when refueling, the impurities in the oil will be gathered in the first collecting portion 12, and the mobile phone will be collected in the second collecting portion 13. A collecting part 12, during the oil suction operation, impurities in the oil will be gathered and collected in the second collecting part 13, realizing the main function of the same filter 9, and the oil in both directions can collect impurities. In addition, for the oil suction or refueling operation completed once, for the sake of oil purity, it is a more reasonable operation step to clean the filter 9 first; a reinforcing ring 14 is provided at the bending part between the first collecting part 12 and the second collecting part 13. Through this arrangement, the strength of the overall structure of the filter 9 can be greatly increased to prevent excessive pressure or negative pressure from being generated during the oil pumping or refueling process, thereby damaging the structure of the filter 9; a plurality of annular limit grooves 158 are provided on the outer periphery of the hose joint 3, and a sealing ring is provided in the annular limit groove 158 16; the edge portion of the annular limiting groove 158 is provided with a triangular protrusion 17 with an inclined surface facing the outer end of the hose joint 3, further strengthening the sealing strength of the hose joint 3 and the hose connection; the surface of the pressure-stabilizing valve 2 is provided with a protective plate 18 corresponding to the inner end position of the hose joint 3, which plays a limiting role; the joint body 1 is provided with a rubber protective cover 19 and a rubber sheath 20, the rubber sheath 20 is sleeved on the outer periphery of the outer end of the joint body 1, and the rubber protective cover 19 is sleeved on the outer periphery of the rubber sheath 20, and is covered with the rubber protective cover 19 and the rubber protective cover, which are mainly placed on the hard friction between the docking copper plate 4 and the aircraft oil filling port during the docking process, resulting in wear and reducing the service life, and preventing collision Debris flows into the oil, causing secondary pollution; the valve assembly 5 includes a valve handle 21, a connecting rod 22 and a valve seat 23, the valve handle 21 is arranged on the surface of the joint body 1, the connecting rod 22 and the valve seat 23 are arranged in the joint body 1, and the valve handle 21, the connecting rod 22 and the valve seat 23 are transmission connected; the valve seat 23 is provided with a first limiting groove 24 on the contact surface with the rubber protective cover 19, and a first sealing ring 25 is arranged in the first limiting groove 24; the valve seat 23 is provided with a second limiting groove 26 on the contact surface with the inner wall of the joint body 1, and a second sealing ring 27 is arranged in the second limiting groove 26. Through this arrangement, the overall sealing performance of the joint is further improved to prevent leakage.

[0027] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An aircraft pressure refueling connector, comprising: A connector body (1), a pressure-stabilizing valve (2), a hose connector (3), a docking copper plate (4), a valve assembly (5) and a docking handle (6), wherein the connector body (1) and the pressure-stabilizing valve (2) are connected by fasteners and are in conduction with each other, the hose connector (3) is arranged on the pressure-stabilizing valve (2), the docking copper plate (4) is arranged on the connector body (1), the valve assembly (5) is arranged in the connector body (1), and the valve assembly (5) is used to control the conduction and closing of the connector body (1), and the docking handle (6) is installed on the surface of the connector body (1), characterized in that a bidirectional impurity collection device (7) is arranged in the hose connector (3).

2. An aircraft pressure refueling connector according to claim 1, characterized in that The inner wall of the opening of the hose joint (3) is provided with a limit groove (8) opening toward the outer end; the bidirectional impurity collecting device (7) comprises a filter screen (9), a bracket (10) and a support rod (11); the bracket (10) is arranged in an annular shape, and the bracket (10) and the limit groove (8) are limitedly matched; the bracket (10) and the support rod (11) are arranged as a whole; the filter screen (9) is sleeved on the bracket (10) and extends toward the inside of the hose joint (3); the filter screen (9) is arranged as a bidirectional bucket-shaped structure with a W-shaped cross section; the filter screen (9) comprises a first collecting portion (12) opening toward the outer end of the hose joint (3) and a second collecting portion (13) opening toward the inner end of the hose joint (3).

3. An aircraft pressure refueling connector according to claim 2, characterized in that A reinforcing ring (14) is provided at the bending portion between the first collecting portion (12) and the second collecting portion (13).

4. The aircraft pressure refueling connector according to claim 1, characterized in that A plurality of annular limiting grooves (15) are arranged on the outer periphery of the hose joint (3), and a sealing ring (16) is arranged inside the annular limiting groove (15).

5. An aircraft pressure refueling connector according to claim 4, characterized in that The edge portion of the annular limiting groove (15) is provided with a triangular protrusion (17) with an inclined surface facing the outer end of the hose joint (3).

6. The aircraft pressure refueling connector according to claim 1, characterized in that A guard plate (18) is provided on the surface of the pressure stabilizing valve (2) at a position corresponding to the inner end of the hose joint (3).

7. The aircraft pressure refueling connector according to claim 1, characterized in that The connector body (1) is provided with a rubber protective cover (19) and a rubber sheath (20), wherein the rubber sheath (20) is sleeved on the outer periphery of the outer end of the connector body (1), and the rubber protective cover (19) is sleeved on the outer periphery of the rubber sheath (20).

8. An aircraft pressure refueling connector according to claim 7, characterized in that The valve assembly (5) comprises a valve handle (21), a connecting rod (22) and a valve seat (23); the valve handle (21) is arranged on the surface of the joint body (1); the connecting rod (22) and the valve seat (23) are arranged in the joint body (1); and the valve handle (21), the connecting rod (22) and the valve seat (23) are transmission-connected with each other.

9. An aircraft pressure refueling connector according to claim 8, characterized in that A first limiting groove (24) is provided on the contact surface of the valve seat (23) with the rubber protective cover (19), and a first sealing ring (25) is provided in the first limiting groove (24).

10. An aircraft pressure refueling connector according to claim 8, characterized in that A second limiting groove (26) is provided on the contact surface between the valve seat (23) and the inner wall of the joint body (1), and a second sealing ring (27) is provided in the second limiting groove (26).

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