Aerospace accessory test adapter

Abstract

The application relates to the technical field of aviation test equipment, in particular to an aviation accessory test joint. The aviation accessory test joint comprises a joint body, the joint body comprises a connecting pipe and a connecting part extending in the circumferential direction at one end of the connecting pipe, the pipe hole of the connecting pipe is consistent in the axial direction, and is matched with the hole diameter of a test pipeline, the technical problem that the hole diameter of the connecting part is narrowed in the prior art and greatly influences various test parameters of fluid is solved, the smooth flow of fluid in the test process is ensured, and the accuracy of test data disturbed by the change of the hole diameter is avoided. The connecting part is used for being connected with test equipment, one end of the connecting pipe away from the connecting part is provided with external threads and is used for being connected with a measured piece, the self-locking characteristics of the thread engagement and the torque control during assembly are used, the problem that the flange plate is rotated is avoided, the dismounting operation steps are simplified, and the efficiency of the replacement of the test piece is improved.

Description

Technical Field

[0001] This application relates to the field of aviation test equipment technology, and in particular to an aviation accessory test connector. Background Technology

[0002] In the aerospace industry, aviation testing equipment is a crucial device for ensuring the performance and safety of aviation accessories. It is required to perform performance tests on various types and models of aviation test components (such as hydraulic valves, fuel pumps, and pressure sensors), covering the detection of multiple key parameters including high-pressure fluid pressure, flow rate, and sealing performance. During testing, the testing equipment must establish a stable fluid path with the test component through a specific connection structure, ensuring that the test medium circulates between the equipment and the test component (aviation accessory) according to preset operating conditions. This allows for the accurate acquisition of performance data of the test component under different operating states, providing important data for the research and development improvement, quality inspection, and troubleshooting of aviation accessories.

[0003] Currently, the connection between aerospace test equipment and the test piece (DPT) mainly employs various traditional connector types. In some scenarios, ordinary fluid connectors are used. While these connectors are simple in structure, in high-pressure fluid testing environments, frequent disassembly and installation can easily lead to loosening of the connection points. This can not only cause leakage of the test medium, affecting the safety and stability of the test, but also require additional time for re-tightening or repair, severely reducing overall testing efficiency. In other scenarios, flange connections are used, fixing the flange to the test equipment and DPT with bolts and other fasteners. However, when disassembling the flange, due to the connection structure and assembly clearances, the flange often rotates, increasing the complexity of the disassembly operation and also resulting in low disassembly efficiency. Furthermore, quick couplings are also used in some cases for ease of connection. However, the structural characteristics of quick couplings inevitably result in narrowing of the orifice at the connection point. This change in orifice diameter alters the fluid flow state, significantly interfering with various test parameters such as pressure loss and flow stability, leading to deviations in test data that fail to accurately reflect the true performance of the DPT and affecting the reliability of the test results.

[0004] The aforementioned defects in existing connection methods—namely, the ease with which ordinary fluid connectors loosen, the reduced work efficiency due to the tendency of flange connections to rotate, and the interference of narrowed orifices in quick-connect fittings with the accuracy of test parameters—significantly impact the performance and efficiency of aerospace testing equipment. In the aerospace field, where testing accuracy is extremely high, deviations in test parameters can lead to misjudgments of the performance of the tested component. Frequent loosening of connectors or difficulties in disassembly prolong testing cycles, increase labor costs, and may even cause safety hazards due to leaks. Utility Model Content

[0005] In order to balance the accuracy of test parameters with the convenience of connection operation, and to adapt to test scenarios that require frequent disassembly and assembly, this application provides an aviation accessory test connector.

[0006] The aviation accessory test connector provided in this application adopts the following technical solution: An aviation accessory test connector includes a connector body, the connector body including a connecting pipe and a connecting portion extending circumferentially from one end of the connecting pipe, the pipe hole of the connecting pipe having a consistent diameter in the axial direction and being adapted to the diameter of the test pipe, the connecting portion being used to connect to test equipment, and the end of the connecting pipe away from the connecting portion having an external thread and being used to connect to the test piece.

[0007] By adopting the above technical solution, the connecting pipe orifice diameter is consistent with and compatible with the test pipeline, effectively avoiding local resistance caused by abrupt changes in orifice diameter at the connection interface. This prevents sudden changes in flow velocity, eddies, or pressure loss, ensuring the accuracy of test parameters. The external thread simplifies the connection operation with the test piece, avoids the rotation problem that may occur in flange connections, and improves assembly and disassembly efficiency.

[0008] Optionally, the end face of the connecting pipe away from the connecting part is provided with a guide slope, and the outer diameter of the guide slope is set to gradually decrease in the direction of the connecting pipe axis away from the connecting part.

[0009] By adopting the above technical solution, the connector can be inserted into the port of the test piece more smoothly, reducing the difficulty of alignment, reducing the time of repeated adjustments, and avoiding damage to the end caused by hard contact, thereby improving the ease of operation and the service life of the connector.

[0010] Optionally, the acute angle between the guide slope and the outer wall of the connecting pipe is 44°~46°.

[0011] By adopting the above technical solution, it is ensured that the inclined plane has a suitable taper, which can provide effective guidance and avoid the problems of increased insertion resistance or reduced centering effect caused by excessive or insufficient angle, thereby ensuring the smoothness and accuracy of the connection between the connector and the test piece.

[0012] Optionally, the end face of the connecting pipe away from the connecting part is provided with a sealing slope spaced apart from the guide slope, so that the end of the connecting pipe away from the connecting part is stepped.

[0013] By adopting the above technical solution, the guiding and sealing functions are separated, so that the guiding bevel is dedicated to insertion and guidance, while the sealing bevel is responsible for tightly fitting with the sealing structure of the test piece after assembly. This avoids the performance compromise that may occur when a single structure undertakes multiple functions at the same time, and improves sealing reliability and guiding accuracy.

[0014] Optionally, the outer diameter of the sealing bevel is set to gradually decrease in the direction opposite to the connection part of the connecting pipe axis.

[0015] By adopting the above technical solution, the machining tool can be fed from the free end of the connecting pipe towards the main body, avoiding interference between the tool and the end structure, reducing the machining difficulty, improving the machining accuracy and surface quality of the sealing slope, and laying the technological foundation for achieving reliable sealing in the future.

[0016] Optionally, the acute angle between the sealing bevel and the outer wall of the connecting pipe is 53°±15'.

[0017] By adopting the above technical solution, it is ensured that under the action of fastening force, a uniform and sufficient contact pressure can be generated between the sealing bevel and the corresponding structure of the test piece, effectively filling the tiny gaps between the contact surfaces, thereby achieving a reliable sealing effect and preventing media leakage during the test process.

[0018] Optionally, one end of the connecting pipe with the connecting portion protrudes to form a plug-in portion, and the outer peripheral surface of the plug-in portion is provided with a receiving groove for installing a sealing ring.

[0019] By adopting the above solution, the displacement or deformation of the sealing ring during assembly and use can be effectively prevented, ensuring that it is always in the preset sealing interface, thereby guaranteeing the reliability and durability of the seal between the connection and the testing equipment.

[0020] Optionally, the end face of the plug portion is provided with a mounting bevel, the mounting bevel... By adopting the above technical solution, the end of the plug part forms a transitional contour from small to large, which facilitates smooth insertion into the test equipment interface, reduces the difficulty of alignment, and avoids the sealing ring being squeezed or cut during installation, thereby improving the smoothness of assembly and the integrity of the seal.

[0021] Optionally, the end face of the connecting part is provided with a receiving groove for installing a sealing ring.

[0022] By adopting the above technical solution, when the connecting part and the end face of the test equipment are pressed together by fasteners, the receiving groove can restrict the position of the sealing ring, ensuring that it is uniformly compressed and fully fills the gap between the contact surfaces, thereby effectively blocking the fluid leakage channel and achieving a reliable seal between the connecting part and the test equipment.

[0023] Optionally, the end face of the connecting part is provided with a plurality of connecting holes that mate with fasteners; and / or The connector body is a one-piece structure.

[0024] By adopting the above technical solution, multiple connection holes for fasteners are provided on the end face of the connection part. This allows for the application of uniform axial pressure through the fasteners, ensuring a tight fit between the connection part and the end face of the testing equipment. The even distribution of multiple connection holes ensures balanced pressure transmission, avoids localized sealing issues, and improves the overall robustness and sealing stability of the connection. The connector body adopts an integrated structure, eliminating the connection interface and assembly gaps between components. This makes the connector less prone to loosening when subjected to vibration, high-pressure impact, or frequent disassembly, resulting in superior overall mechanical properties. It possesses anti-loosening and high-pressure resistance characteristics, making it suitable for the harsh conditions of aerospace testing.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up a connector body consisting of a connecting pipe and a connecting part, wherein the pipe hole of the connecting pipe has a consistent diameter in the axial direction and is adapted to the diameter of the test pipeline, the technical problem that the narrowing of the channel at the connection point when using a quick connector in the prior art has a significant impact on various test parameters of the fluid is solved, ensuring the smooth flow of the fluid during the test and avoiding the interference of diameter changes on the accuracy of test data. 2. The external thread structure at the end of the connecting pipe away from the connection part significantly improves the tightness of the connection through the self-locking characteristics of the thread engagement and torque control during assembly. This reduces the possibility of medium leakage and test interruption caused by loose joints during high-pressure testing, and lowers the time cost of re-tightening. At the same time, during the disassembly process, the threaded connection allows for direct force application to the end of the externally threaded connecting pipe using tools, avoiding the problem of flange rotation, simplifying the disassembly operation steps, and improving the efficiency of test piece replacement. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the aviation accessory test connector in Embodiment 1 of this application; Figure 2 This is a partial cross-sectional view of the aviation accessory test connector in Embodiment 1 of this application; Figure 3 This is a schematic diagram of the structure of the aviation accessory test connector in Embodiment 2 of this application.

[0027] Explanation of reference numerals in the attached figures: 1. Connecting pipe; 11. External thread; 12. Guide bevel; 13. Sealing bevel; 14. Pipe hole; 15. Insertion part; 151. Mounting bevel; 16. Receiving groove; 2. Connecting part; 21. Connecting hole. Detailed Implementation

[0028] The following will be combined with the appendix Figure 1-3The technical solutions in the embodiments of this application are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0029] Example 1: This application discloses an aviation accessory test connector. For example... Figure 1 As shown, the aviation accessory test connector includes an integrated connector body, which includes a connecting pipe 1 and a connecting part 2 extending circumferentially from one end of the connecting pipe 1. The pipe hole 14 of the connecting pipe 1 maintains a consistent diameter in the axial direction, and the diameter of the hole is adapted to the diameter of the test pipeline.

[0030] The connecting part 2 is used to connect with the test equipment, and the end of the connecting pipe 1 away from the connecting part 2 is used to connect with the test piece, so that the joint can build a sealed connection path between the test equipment and the test piece, providing a basic structural guarantee for the closed flow of fluid medium during the test, avoiding the medium leakage problem caused by improper sealing of the connecting part 2, and ensuring the safety of the test environment and the stability of the test process.

[0031] When the test fluid flows in the passage formed by the test pipe and connecting pipe 1, the consistent and suitable orifice diameter eliminates the local resistance caused by abrupt changes in orifice diameter at the interface between different components. This prevents sudden changes in flow velocity, eddies, or pressure losses when the fluid flows through the joint, ensuring that the fluid always flows smoothly in the passage. The test parameters (such as pressure, flow rate, and flow velocity stability) of the fluid flowing through the joint will not change due to the joint structure. There will be no increase in flow velocity or pressure loss due to narrowing of the orifice, nor will turbulence interfere with parameter detection due to abrupt changes in orifice diameter. This ensures that the fluid parameters acquired by the test equipment accurately reflect the actual working state of the tested component, effectively solving the problem of distorted test parameters caused by unreasonable joint orifice design in existing technologies. This provides crucial structural support for the accuracy and reliability of aerospace accessory test data.

[0032] The end of the connecting tube 1 away from the connecting part 2 is provided with an external thread 11. It is connected to the test piece by means of threaded connection. Through the meshing action between the threads, a clear rotational torque can be applied by a tool during assembly and disassembly. The fastening and loosening operations between the connecting tube 1 and the test piece can be completed by directly applying force to the end of the connecting tube 1. The operation process is simple and the force is clear.

[0033] In contrast, if a flange connection is used, due to the connection between the flange and the test piece, the flange is prone to rotation during disassembly as the fasteners rotate. Operators must then expend extra effort to secure the flange and prevent rotation, increasing the operational steps and complexity. The external thread 11 structure effectively avoids this rotation phenomenon, significantly simplifying the disassembly process and reducing the time and labor costs required for each disassembly. This greatly improves testing efficiency in scenarios involving frequent test piece changes, perfectly meeting the requirements of aerospace testing equipment for convenient and efficient connection operations.

[0034] like Figure 2 As shown, the end face of the connecting tube 1 away from the connecting part 2 is provided with a guide slope 12. The outer diameter of the guide slope 12 gradually decreases in the direction opposite to the connecting part 2 along the axis of the connecting tube 1. When the connecting tube 1 is inserted into the test piece, the gradually decreasing outer diameter allows the end of the connecting tube 1 to form a transition shape from thin to thick. This transition shape can guide and center the connection during insertion, making it easier for the connecting tube 1 to be inserted into the test piece. This not only reduces the alignment difficulty for operators during the docking process and reduces the time spent on repeated adjustments due to alignment deviations, but also avoids damage to the end of the connecting tube 1 or the port of the test piece caused by hard contact, further improving the ease of operation and service life of the connector in frequent insertion and removal scenarios.

[0035] On the end face of the connecting tube 1 away from the connecting part 2, there is a sealing slope 13 spaced apart from the guide slope 12, so that the end of the connecting tube 1 away from the connecting part 2 forms a stepped structure. When the connecting tube 1 is inserted into the test piece and the assembly is completed, the sealing slope 13 can form a tight fit with the corresponding sealing structure (such as a sealing groove, sealing ring or another matching slope) in the connection port of the test piece.

[0036] Because the two surfaces are in contact at an angle, when the connecting pipe 1 and the test piece are fastened together by means of external threads 11, the axial fastening force is converted into pressure along the angle, causing a uniform and sufficient contact pressure between the sealing angle 13 and the corresponding structure of the test piece. This pressure can effectively fill any tiny gaps that may exist between the contact surfaces, blocking the path for fluid medium to leak from the connection gap. Simultaneously, the stepped structure, through the interval between the guide angle 12 and the sealing angle 13, clearly defines the functional division between the two. The guide angle 12 is dedicated to guiding and centering during insertion, while the sealing angle 13 is dedicated to sealing after assembly. This avoids the problems of insufficient guiding accuracy or uneven sealing pressure that may occur when a single structure simultaneously undertakes both guiding and sealing functions. Ultimately, a reliable sealing effect is achieved between the connecting pipe 1 and the test piece, ensuring that the fluid medium flows only within the preset flow channel during the test. This not only guarantees the stability of parameters such as test pressure and flow rate but also avoids test errors, environmental pollution, and safety hazards caused by medium leakage, further improving the reliability of the entire test system.

[0037] The inclined direction of the sealing bevel 13 can be towards the connecting part 2 or away from the connecting part 2. In this embodiment, the outer diameter of the sealing bevel 13 is gradually reduced in the direction away from the connecting part 2 along the axis of the connecting pipe 1. When machining the sealing bevel 13 on the end face of the connecting pipe 1 away from the connecting part 2, since the outer diameter of the bevel gradually decreases in the direction away from the connecting part 2, the machining tool (such as a lathe tool) can be fed from the free end (the end away from the connecting part 2) of the connecting pipe 1 towards the main body of the connecting pipe 1.

[0038] This feed direction allows the tool to contact the surface to be machined more smoothly, avoiding interference between the tool and the end structure of the connecting pipe 1 that may occur when the machining direction is reversed (i.e., from the main body of the connecting pipe 1 to the free end, with the outer diameter of the inclined surface gradually increasing), or problems such as obstructed tool cutting path and poor machining field of view due to limited end space. At the same time, the machining path with a gradually decreasing outer diameter is more in line with the movement habits of tools in conventional turning, making it easier for the operator to control the cutting depth and feed rate of the tool through the machine tool, ensuring the taper accuracy and surface roughness of the sealing inclined surface 13, and reducing dimensional deviations or surface quality defects caused by machining difficulties.

[0039] Compared to the design where the outer diameter of the sealing bevel 13 gradually decreases in the opposite direction (towards the connecting part 2), this setting effectively reduces the operational difficulty during the processing, improves processing efficiency, reduces abnormal tool wear, lowers manufacturing costs, and ensures that the sealing bevel 13 can stably meet the design processing accuracy requirements, laying a good processing foundation for subsequent precise bonding and sealing with the test piece.

[0040] The connecting pipe 1 has a connecting part 2 at one end protruding to form a plug-in part 15. The outer peripheral surface of the plug-in part 15 is provided with a receiving groove 16 for installing a sealing ring, which provides a stable installation space and positioning constraint for the sealing ring. When the sealing ring is embedded in the receiving groove 16, the groove wall of the receiving groove 16 can restrict the sealing ring from shifting or deforming during assembly and use, ensuring that the sealing ring is always on the preset sealing interface between the connecting part 2 and the end face of the test equipment.

[0041] The end face of the insertion part 15 is provided with a mounting bevel 151, the outer diameter of which gradually increases in the direction away from the connecting part 2 and towards the connecting part 2. The gradually increasing outer diameter creates a transitional profile from small to large at the end of the insertion part, which naturally guides the insertion part 15 into the corresponding interface of the test equipment during insertion assembly, reducing alignment difficulty and avoiding damage, cutting, or positional displacement of the sealing ring that may be caused by forced insertion. At the same time, this bevel structure allows the sealing ring to slide smoothly into the receiving groove 16 during installation, forming a reliable interference fit with the corresponding interface of the test equipment, thereby ensuring the integrity and stability of the sealing connection while improving assembly smoothness.

[0042] The end face of the connecting part 2 is provided with a plurality of connecting holes 21 that mate with fasteners. The fasteners are passed through the connecting holes 21 and screwed into the corresponding threaded holes on the test equipment.

[0043] The connector body adopts a one-piece structure, eliminating assembly gaps and connection interfaces between components through integral forming processes (such as integral forging and turning). This ensures that the connector will not experience relative displacement or loosening due to assembly gaps between components when subjected to external forces such as vibration, high-pressure fluid impact, or frequent disassembly, thus naturally possessing anti-loosening function. This effectively solves the problem of easy loosening caused by weak component connections in traditional spliced ​​connectors, improving the structural stability of the connector during long-term use. At the same time, the overall mechanical properties of the one-piece structure are superior, with uniform material distribution and no weak connection points, enabling it to withstand higher fluid pressures. This gives the connector high-pressure resistance, making it suitable for the harsh operating conditions of high-pressure testing in the aerospace field.

[0044] The connector can be flexibly configured with corresponding overall dimensions according to the interface specifications of the actual testing equipment, the size requirements of the tested component, and the test pressure level, enhancing the connector's versatility and applicability. The end of the connecting pipe 1 furthest from the connecting part 2 is designed according to aviation standard HB4-4-2002. The acute angle b between the guide bevel 12 and the outer wall of the connecting pipe 1 is set to 44°~46°; in this embodiment, acute angle b is 45°. The acute angle a between the sealing bevel 13 and the outer wall of the connecting pipe 1 is set to 53°±15'; in this embodiment, acute angle a is 53°. This ensures precise docking between the connector and aviation accessories conforming to this standard, reducing assembly errors caused by size incompatibility, improving the connector's interchangeability and adaptability, and also ensuring the compliance and reliability of the connector in aviation applications.

[0045] Example 2: The difference between Example 2 and Example 1 is that the end faces of the connecting part 2 and the connecting pipe 1 are flush. The end face of the connecting part 2 is provided with a receiving groove 16 for installing the sealing ring, which provides a stable installation space and positioning constraint for the sealing ring. When the sealing ring is embedded in the receiving groove 16, the groove wall of the receiving groove 16 can restrict the sealing ring from shifting or deforming during assembly and use, ensuring that the sealing ring is always on the preset sealing interface between the connecting part 2 and the end face of the test equipment.

[0046] The end face of the connecting part 2 is provided with multiple connecting holes 21 that mate with fasteners. By passing the fastener through the connecting holes 21 and screwing it into the corresponding threaded hole on the testing equipment, uniform axial pressure can be applied to the connecting part 2, causing the end face of the connecting part 2 to fit tightly against the end face of the testing equipment, thereby compressing the sealing ring in the receiving groove 16. This axial pressure causes the sealing ring to undergo elastic deformation. The deformed sealing ring can fully fill the tiny gap between the connecting part 2 and the end face of the testing equipment, blocking the channel for leakage of fluid medium from the contact surface, thereby achieving a reliable seal between the connecting part 2 and the testing equipment. The uniform distribution design of the multiple connecting holes 21 ensures that the axial pressure applied by the fastener is uniformly transmitted on the end face of the connecting part 2, avoiding the problem of inconsistent compression of the sealing ring due to uneven local pressure, which could lead to weak points in the seal. This further improves the stability and reliability of the seal, and also ensures the overall robustness of the connection between the connecting part 2 and the testing equipment, providing dual protection for the sealing and safety of the entire testing path.

[0047] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0048] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An aviation accessory test connector, characterized in that, The connector body includes a connecting pipe (1) and a connecting part (2) extending circumferentially from one end of the connecting pipe (1). The pipe hole (14) of the connecting pipe (1) has the same diameter in the axial direction and is adapted to the diameter of the test pipeline. The connecting part (2) is used to connect with the test equipment. The end of the connecting pipe (1) away from the connecting part (2) is provided with an external thread (11) and is used to connect with the test piece.

2. The aviation accessory test connector according to claim 1, characterized in that, The end face of the connecting pipe (1) away from the connecting part (2) is provided with a guide slope (12), and the outer diameter of the guide slope (12) is gradually reduced in the direction of the axis of the connecting pipe (1) away from the connecting part (2).

3. The aviation accessory test connector according to claim 2, characterized in that, The acute angle between the guide slope (12) and the outer wall of the connecting pipe (1) is 44°~46°.

4. The aviation accessory test connector according to claim 2, characterized in that, The end face of the connecting pipe (1) away from the connecting part (2) is provided with a sealing slope (13) spaced apart from the guide slope (12), so that the end of the connecting pipe (1) away from the connecting part (2) is stepped.

5. The aviation accessory test connector according to claim 4, characterized in that, The outer diameter of the sealing bevel (13) is set to gradually decrease in the direction opposite to the connecting part (2) of the axis of the connecting pipe (1).

6. The aviation accessory test connector according to claim 5, characterized in that, The acute angle between the sealing bevel (13) and the outer wall of the connecting pipe (1) is 53°±15'.

7. The aviation accessory test connector according to claim 1, characterized in that, The connecting pipe (1) has a protruding end of the connecting part (2) to form a plug-in part (15), and the outer peripheral surface of the plug-in part (15) is provided with a receiving groove (16) for installing a sealing ring.

8. The aviation accessory test connector according to claim 7, characterized in that, The end face of the plug-in part (15) is provided with a mounting inclined surface (151), and the outer diameter of the mounting inclined surface (151) is gradually increased in the direction of the connecting part (2).

9. The aviation accessory test connector according to claim 1, characterized in that, The end face of the connecting part (2) is provided with a receiving groove (16) for installing the sealing ring.

10. The aviation accessory test connector according to claim 1, characterized in that, The end face of the connecting part (2) is provided with a plurality of connecting holes (21) that mate with fasteners; and / or The connector body is a one-piece structure.

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