Flexible connector for airplane pipelines

Abstract

The invention relates to the technical field of pipeline connectors, and particularly discloses an aircraft pipeline flexible connector which comprises a transfer pipe, a heat insulation pipe is arranged outside the transfer pipe in a sleeving mode, the transfer pipe is a flexible pipe body, the heat insulation pipe is of a metal corrugated pipe structure, a plurality of supporting structures are detachably installed on the transfer pipe, and a plurality of butt joint structures are detachably installed between the supporting structures. The four concave supporting frames are used for being inserted in a relatively staggered mode to form the #-shaped structure, and the supporting frames are oppositely clamped at the two ends of the adapter pipe through the middle space of the #-shaped structure and can be used for being in butt joint with other structures for use; the four concave supporting frames are installed in the middle of the adapter pipe and used for intermittent supporting, contact with a heat insulation pipe arranged outside in a sleeving mode is prevented, and the heat insulation effect is achieved. A liquid cylinder is mounted on the sleeve seat and is used for loading liquid in the liquid cylinder to absorb heat and insulate heat; and a fan is mounted on the sleeve seat, so that the fan is positioned between the staggered end parts of the support frames and is used for forming airflow flowing heat dissipation.

Description

Technical Field

[0001] This invention relates to the field of pipeline connector technology, specifically to a flexible connector for aircraft pipelines. Background Technology

[0002] Aircraft piping systems are a core component ensuring the normal operation of aircraft. They are widely used in critical operating conditions such as fuel delivery, hydraulic control, cooling circulation, and aerodynamic regulation. Their connection reliability and environmental adaptability are directly related to the flight safety and operational stability of the aircraft. As a core connecting component in aircraft piping systems, flexible connectors must meet stringent requirements such as compact aircraft assembly space, complex operating conditions (long-term exposure to vibration, temperature fluctuations, and frequent bending), and convenient maintenance. However, existing flexible piping connections lack sufficient support and protection: traditional flexible connectors often have a direct-fit structure between the insulation layer and the adapter pipe, lacking an effective spacer support mechanism. During aircraft flight, due to vibration, piping assembly bending, or after long-term use, the insulation layer is prone to sticking and rubbing against the adapter pipe surface, which not only leads to a decrease in insulation effect but may also cause wear on the outer wall of the adapter pipe, resulting in safety hazards such as leaks, especially in high-temperature piping. The mating structure of existing connectors is mostly fixed welding or multi-bolt fastening design, which makes the disassembly and assembly process cumbersome, and simple plugging is prone to loosening and leakage. Summary of the Invention

[0003] The purpose of this invention is to provide a flexible connector for aircraft piping to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a flexible connector for aircraft piping, comprising an adapter tube, an insulating tube fitted on the outside of the adapter tube, the adapter tube being a flexible tube body, the insulating tube being a metal corrugated pipe structure, and several support structures detachably installed on the adapter tube, the support structures being located inside the adapter tube, and several docking structures detachably installed between the support structures; wherein, the support structures clamp the outside of the adapter tube to support the insulating tube and prevent the insulating tube from contacting the adapter tube, the support structures and docking structures cooperate to achieve rapid connection and fixation of the piping, and the support structures can also be used to assist in heat dissipation, heat insulation, or only for docking the adapter tube according to actual needs.

[0005] Preferably, the support structure includes two pairs of support frames, several adjusting seats, several first bolts, several second bolts, several sleeves, several adapter screws, and several adapter nuts; both pairs of support frames are concave structures, and the ends of the support frames are chamfered to prevent damage to the external adapter pipes. One end of each support frame is wider than the other end. A cross-shaped adjusting groove is formed through the middle of one end of each support frame and connects to the other end. Each end of the support frame is provided with an adapter hole, and the adapter hole is opposite to the middle of the adjusting groove. The two pairs of support frames are staggered and interlocked, forming a grid-like structure with eight ends having adapter holes. All the adjusting seats are H-shaped. Several adjusting seats are movably inserted into the adjusting grooves of the support frame, and the adjusting seats are located at the opposite intersection of the support frame. Several first bolts are screwed onto one side wall of the adjusting seat, and the first bolts are pressed against one side wall of the support frame. Several second bolts are movably inserted through the middle of the other end of the adjusting seat, and the second bolts are movably inserted through the adjusting groove. Several second bolts are pressed against the inner wall of the other end of the support frame. Several sleeves are detachably fitted onto both ends of the support frame. Several adapter screws are movably inserted through adapter holes for docking of two sets of support structures. Several adapter nuts are screwed onto both ends of the adapter screws for fixing.

[0006] Preferably, the support structure further includes several liquid cylinders and several fans; the several liquid cylinders are detachably screwed onto one end of the sleeve, and the liquid cylinders can be filled with liquid for heat absorption; the side walls of the several fans are provided with mounting screws, and the several fans are screwed onto the side walls of the sleeve through mounting screws, and the fans are respectively located between one end of the support frame.

[0007] Preferably, the support structure forms a grid-like structure through the support frame, and the transfer pipe is clamped in the middle of the grid-like structure.

[0008] Preferably, the chamfered portions at both ends of the support frame are fitted and supported against the inner walls of both ends of the heat insulation pipe.

[0009] Preferably, the docking structure includes a docking slide, a docking screw, a pair of movable seats, a third bolt, and a pair of hanging rods; the docking slide is rectangular and has a groove in the middle; one end of the docking screw movably passes through the middle of the docking slide and is rotatable; one end of the docking screw is provided with an internal hexagonal drive port; the pair of movable seats are symmetrically arranged on the docking slide and are screwed to the docking screw respectively; the pair of movable seats move relative to each other by rotating the docking screw; each of the other ends of the pair of movable seats has a mounting hole in the middle; the third bolt is screwed to the side wall of the movable seat and is connected to the mounting hole; one end of each pair of hanging rods is detachably inserted into the mounting hole and fixed by the third bolt; the other end of the hanging rod is detachably inserted into the adapter hole of the support frame.

[0010] Preferably, the docking structure is connected by inserting a hanging rod into the corresponding support frame between the two sets of support structures.

[0011] Preferably, the number of support structures is set according to the length of the transfer pipe and the heat insulation pipe to prevent the heat insulation pipe from contacting the transfer pipe during bending.

[0012] Preferably, the support frame is equipped with a docking structure or an adapter screw according to the connection requirements.

[0013] This invention proposes a flexible connector for aircraft piping: The invention utilizes four concave support frames, interlocked to form a grid-like structure. The grid-like structure's central space clamps the two ends of the adapter pipe, enabling docking with other structures. The four concave support frames, installed in the middle of the adapter pipe, provide intermittent support, preventing contact with the externally fitted heat insulation pipe and achieving a heat insulation effect. Furthermore, the support frames can be fitted with sleeves, on which liquid cylinders are installed for internal liquid heat absorption and insulation. Fans are installed on the sleeves, positioned between the interlocking support frame ends to create airflow for heat dissipation. Moreover, depending on actual installation and fixing requirements, the support structures can be stably connected using adapter screws and nuts, achieving relatively clamped pipe end docking. Alternatively, the support structures can be quickly clamped together using the docking structure, facilitating later disassembly and maintenance, achieving the following effects: 1. By interlocking four concave support frames to form a grid-like structure, two key functions can be achieved through mechanical splicing without the need for complex transmission components: First, the central space clamps the adapter pipe, directly acting as a flange to replace traditional docking components, simplifying the structural complexity of pipe connection; Second, by fitting the ends of the support frames against the inner wall of the insulation pipe, intermittent support is formed, fundamentally preventing the insulation pipe from contacting the adapter pipe during bending or vibration. This ensures the structural stability of the insulation pipe, enhances the insulation effect, and solves the structural redundancy problem caused by the separation of support and docking in traditional connectors.

[0014] 2. The support structure achieves functional expansion through detachable sleeves, possessing extremely strong adaptability to various working conditions: Choose between heat insulation and heat absorption as needed: After the sleeve is screwed onto the liquid cylinder, the heat insulation effect can be enhanced by filling it with heat-absorbing liquid, making it suitable for high-temperature pipeline scenarios; After the fan is installed on the sleeve, the fan's layout between the ends of the support frame forms a directional airflow to quickly remove heat, making it suitable for working conditions requiring active heat dissipation; No need to replace the entire connector, you can switch between three modes—simple docking, heat insulation, and heat dissipation and heat insulation—simply by disassembling and assembling the liquid cylinder and fan, making it extremely versatile.

[0015] 3. Two detachable connection methods are designed to meet different installation and maintenance needs: one uses an adapter screw and adapter nut in conjunction with the adapter hole of the support frame, which provides high connection strength and strong vibration resistance, and is suitable for the long-term fixing requirements of pipelines in critical parts of the aircraft; the other uses a docking structure to achieve quick snap-fit, and the distance between the moving seats can be adjusted by rotating the internal hexagonal drive port. The hanging rod can be fixed without complicated tools, which greatly reduces the difficulty and time of disassembly and maintenance in the later stage, and improves the efficiency of pipeline maintenance.

[0016] 4. The number of support structures can be flexibly adjusted according to the length of the adapter pipe and the insulation pipe, without the need for customized special connectors, which can meet the intermittent support requirements of pipes of different lengths; at the same time, the grid structure can finely adjust the clamping distance through the adjusting seat and the first and second bolts, indirectly adapting to adapter pipes of different diameters, further expanding the product's applicability and reducing the adaptation cost of multi-specification pipes.

[0017] 5. All core components adopt a detachable design. First, when a component is damaged, it can be replaced individually without scrapping the entire connector, reducing maintenance costs. Second, the installation process does not require complex tooling; assembly can be completed simply by installing bolts and inserting them, improving assembly efficiency. Third, during later maintenance, functional components or connecting structures can be disassembled as needed, with a low operating threshold, adapting to the high-efficiency requirements of aircraft maintenance scenarios. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the assembly structure of the present invention; Figure 2 This is a diagram illustrating the docking of the support structure of the present invention; Figure 3 This is a diagram illustrating the support structure of the present invention; Figure 4 This is a diagram illustrating the connection between the support structure and the docking structure of the present invention. Figure 5 This is a schematic diagram of the disassembled support structure of the present invention; Figure 6 This is a diagram illustrating the adjustment seat of the present invention; Figure 7This is a schematic diagram of the disassembled docking structure of the present invention; Figure 8 for Figure 2 A magnified view of section A in the image.

[0019] In the diagram: 1. Adaptor pipe, 2. Insulation pipe, 3. Support structure, 31. Support frame, 32. Adjusting seat, 33. First bolt, 34. Second bolt, 35. Sleeve, 36. Liquid cylinder, 37. Fan, 38. Adaptor screw, 39. Adaptor nut, 4. Connecting structure, 41. Connecting slide, 42. Connecting screw, 43. Moving seat, 44. Third bolt, 45. Hanging rod, 5. Adjustment groove, 6. Adaptor hole, 7. Mounting hole. Detailed Implementation

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

[0021] Please see Figures 1-8 This invention provides a technical solution: a flexible connector for aircraft piping, including an adapter tube 1, an insulating tube 2 fitted on the outside of the adapter tube 1, the adapter tube 1 being a flexible tube body, the insulating tube 2 being a metal corrugated pipe structure, a plurality of support structures 3 being detachably installed on the adapter tube 1, and the support structures 3 being located inside the adapter tube 1, and a plurality of docking structures 4 being detachably installed between the support structures 3; wherein, the support structures 3 clamp the outside of the adapter tube 1 to support the insulating tube 2 and prevent the insulating tube 2 from contacting the adapter tube 1, the support structures 3 and the docking structures 4 cooperate to achieve rapid docking and fixing of the piping, and the support structures 3 can also be used to assist in heat dissipation, heat insulation or only for docking the adapter tube 1 according to actual needs.

[0022] As a preferred embodiment, the support structure 3 further includes two pairs of support frames 31, several adjusting seats 32, several first bolts 33, several second bolts 34, several sleeves 35, several liquid cylinders 36, several fans 37, several adapter screws 38, and several adapter nuts 39. Both pairs of support frames 31 are concave structures, and each end of the support frame 31 has a chamfer to prevent damage to the external adapter pipe 1. One end of the support frame 31 is wider than the other end. A cross-shaped adjusting groove 5, connecting to the other end, is opened through the middle of one end of the support frame 31. Each end of the support frame 31 has an adapter hole 6, which is opposite to the middle of the adjusting groove 5. The two pairs of support frames 31 are staggered and interlocked, forming a grid-like structure with eight ends having adapter holes 6. The several adjusting seats 32 are H-shaped and are movably inserted into the adjusting grooves 5 of the support frames 31. 32 is located at the opposite intersection of the support frame 31. Several first bolts 33 are respectively screwed onto one side wall of the adjusting seat 32, and the first bolts 33 are tightened against one side wall of the support frame 31. Several second bolts 34 are respectively movably passed through the middle of the other end of the adjusting seat 32, and the second bolts 34 are movably passed through the adjusting groove 5. Several second bolts 34 are respectively tightened against the inner wall of the other end of the support frame 31. Several sleeves 35 are respectively detachably fitted onto both ends of the support frame 31. Several liquid cylinders 36 are respectively detachably screwed onto one end of the sleeve 35, and the liquid cylinders 36 can be filled with liquid for heat absorption. Several fans 37 are provided with mounting screws on their side walls. Several fans 37 are screwed onto the side walls of the sleeves 35 through the mounting screws, and the fans 37 are respectively located between one end of the support frame 31. Several adapter screws 38 are respectively movably passed through the adapter hole 6 for docking of the two sets of support structures 3. Several adapter nuts 39 are respectively screwed onto both ends of the adapter screws 38 for fixing.

[0023] More specifically, when it is necessary to enhance the heat insulation effect, several liquid cylinders 36 are respectively screwed to one end of the sleeve 35, and heat-absorbing liquid (such as heat transfer oil) is filled into the liquid cylinders 36. The heat exchange effect of the heat-absorbing liquid is used to achieve auxiliary heat insulation. When heat dissipation is required, mounting screws are pre-installed on the side walls of several fans 37, and the fans 37 are screwed onto the side walls of the sleeve 35 through the mounting screws, so that each fan 37 is located between adjacent ends of the support frame 31. The rotation of the fans 37 forms a directional airflow, which quickly removes the heat from the pipes and the surrounding area of ​​the support structure.

[0024] When only basic docking functionality is required, only the sleeve 35 needs to be installed, without assembling the liquid cylinder 36 and fan 37. One end of several adapter screws 38 respectively movably passes through the adapter hole 6 at the end of the support frame 31 to achieve docking and fixing between the two sets of support structures 3. During assembly, after the adapter screws 38 pass through the adapter holes 6 of the two corresponding sets of support structures 3, adapter nuts 39 are screwed onto both ends of the adapter screws 38 respectively. Tightening the adapter nuts 39 achieves a firm connection between the two sets of support structures 3, thereby ensuring the stability of the pipeline docking.

[0025] Through the above assembly process, the support structure 3 forms a modular component with stable structure and expandable function. The middle part of its grid-shaped structure is used to clamp the adapter pipe 1. The chamfered part at the end of the support frame 31 fits against the inner walls of both ends of the heat insulation pipe 2, effectively preventing the heat insulation pipe 2 from directly contacting the adapter pipe 1. At the same time, the working mode can be flexibly switched by disassembling and assembling the liquid cylinder 36 and the fan 37. Stable docking between the support structures can be achieved by the adapter screw 38 and the adapter nut 39, which fully meets the complex working conditions of the aircraft piping system.

[0026] As a preferred option, the support structure 3 further forms a grid-shaped structure through the support frame 31, and the adapter pipe 1 is clamped in the middle of the grid-shaped structure. The chamfered parts at both ends of the support frame 31 are attached to the inner walls of both ends of the heat insulation pipe 2 for support. The support structure 3 is set with a corresponding number according to the length of the adapter pipe 1 and the heat insulation pipe 2 to prevent the heat insulation pipe 2 from contacting the adapter pipe 1 during bending.

[0027] As a preferred embodiment, the docking structure 4 further includes a docking slide 41, a docking screw 42, a pair of movable seats 43, a third bolt 44, and a pair of hanging rods 45. The docking slide 41 is rectangular and has a groove in the middle. One end of the docking screw 42 passes through the middle of the docking slide 41 and can rotate. One end of the docking screw 42 is provided with an internal hexagonal drive port. The pair of movable seats 43 are symmetrically arranged on the docking slide 41 and are screwed to the docking screw 42. The pair of movable seats 43 move relative to each other by rotating the docking screw 42. The other end of each pair of movable seats 43 is provided with a mounting hole 7. The third bolt 44 is screwed to the side wall of the movable seat 43 and is connected to the mounting hole 7. One end of each pair of hanging rods 45 is detachably inserted into the mounting hole 7 and fixed by the third bolt 44. The other end of each hanging rod 45 is detachably inserted into the transition hole 6 of the support frame 31.

[0028] As a preferred option, the docking structure 4 is further connected by inserting the hanging rod 45 into the corresponding support frame 31 between the two sets of support structures 3. The support frame 31 is equipped with the docking structure 4 or the adapter screw 38 according to the connection requirements.

[0029] More specifically, one end of the docking screw 42 passes through the middle of the docking slide 41 from one side, so that the docking screw 42 and the docking slide 41 form a rotatable fit, ensuring that the docking screw 42 rotates without jamming and does not detach from the docking slide 41; a pair of movable seats 43 are inserted into the two ends of the slide groove of the docking slide 41 respectively, so that the internal thread of the inner side wall of the movable seat 43 is precisely screwed into the external thread of the docking screw 42, ensuring that the movable seat 43 can slide smoothly along the slide groove without jamming or loosening; according to the spacing of the two sets of support structures 3 to be docked, a hanging rod 45 of appropriate length is cut, and one end of the hanging rod 45 is inserted into the mounting hole 7 of a pair of movable seats 43 respectively, with the insertion depth ensuring that the hanging rod 45 is stable and does not wobble; the third bolt 44 on the side wall of the movable seat 43 is tightened, so that the screw end of the third bolt 44 presses against the side wall of the hanging rod 45, and the hanging rod 45 is firmly fixed to the movable seat 43 through friction, completing the overall assembly of the docking structure 4.

[0030] The docking structure 4, through its detachable engagement with the support structure 3, enables the rapid docking of the two sets of support structures 3, thereby completing the connection of the pipeline. The specific docking logic is as follows: Before docking, ensure that the two sets of support structures 3 to be docked are respectively clamped to the ends of the corresponding adapter pipes 1, and that the adapter holes 6 are opened at the ends of the support frames 31 of the support structures 3; the operator inserts an Allen wrench into the Allen drive port of the docking screw 42, rotates the docking screw 42, and adjusts the distance between the pair of moving seats 43 so that the other end of the hanging rod 45 can be accurately aligned with the adapter holes 6 of the corresponding support frames 31 on the two sets of support structures 3; insert the other end of the hanging rod 45 into the corresponding adapter holes 6 of the two sets of support structures 3 respectively, and after insertion, ensure that the hanging rod 45 fits tightly with the adapter holes 6 without obvious gaps; To further improve the stability of the connection, the connection screw 42 can be finely adjusted again, so that the moving seat 43 drives the hanging rod 45 to be slightly tensioned, ensuring that there is no relative displacement after the two sets of support structures 3 are connected, thereby ensuring the sealing and stability of the pipeline connection.

[0031] Its detailed connection method is a well-known technology in this field. The following mainly introduces the working principle and process, and the specific work is as follows.

[0032] First, the support frames 31 in the support structure 3 are interlocked and inserted into each other. The adjusting seat 32 located in the adjusting groove 5 of the support frame 31 is moved to the interlocked position of the two support frames 31. Then, the adjusting seat 32 is fixed by the second bolt 34 passing through it. At the same time, the adjusting seat 32 is fixed by the first bolt 33 pressing against the side wall of the support frame 31 that carries the adjusting seat 32. Thus, the adjusting seat 32 is positioned and the second bolt 34 is fixed, maintaining a stable connection between the two interlocked support frames 31. Four support frames 31 are combined to form a grid-like structure. The middle of the grid-like structure is used to clamp the two ends of the flexible adapter pipe 1 to be installed. Then, by corresponding to the support frames 31 installed on the corresponding pipelines, the adapter screws 38 are driven through the adapter holes 6 at the ends of the support frames 31, and the adapter nuts 39 are used to achieve docking, keeping the adapter pipe 1 stable with the end of the corresponding pipeline. After forming the grid-like structure, it has eight ends to ensure stability (in order to prevent slippage, it is best to provide raised retaining rings at both ends of the adapter pipe 1 and the end of the connecting pipeline for locking). According to the length of the adapter pipe 1, multiple support structures 3 can be added. Then, according to the length of the support frame 31, an external heat insulation pipe 2 with a corresponding diameter can be set, so that the heat insulation pipe 2 is fitted on the outside of the multiple support structures 3, that is, the heat insulation pipe 2 is fitted on the outside of the adapter pipe 1, and the adapter pipe 1 and the heat insulation pipe 2 have no direct contact. After the flexible connection, they will not come into relative contact when bending or vibrating, thus improving the heat insulation effect and preventing damage. Meanwhile, a liquid cylinder 36 can be installed using the sleeve 35 to allow liquid to be filled in the liquid cylinder 36 for heat absorption, and it is set at the end of the support frame 31; a fan 37 can also be installed on the sleeve 35 to form airflow for heat dissipation. After the support structure 3 is installed, it can also be assembled and connected using the assembled connection structure 4. That is, according to the corresponding spacing of the support structure 3 after the pipe ends are connected, the connection screw 42 is rotated, which drives the two moving seats 43 to move relative to each other in the connection slide 41. This causes the hanging rod 45, which is installed on the moving seat 43 by the third bolt 44, to move relative to each other. The other end of the hanging rod 45 is then inserted into the transition hole 6 of the support frame 31 for direct connection and limiting, thereby achieving a stable connection. According to the actual spacing requirements, the length of one end of the hanging rod 45 can also be cut and changed, so that one end of the hanging rod 45 is inserted into the mounting hole 7 of the moving seat 43 and tightened by the third bolt 44, thereby changing the relative distance of the hanging rod 45 after the moving seats 43 are in contact with each other.

[0033] In summary, when applied to critical aircraft piping systems (such as fuel delivery and hydraulic control systems requiring long-term stable fixation), the connection method of adapter screw 38 and adapter nut 39 is preferred. The adapter screw 38 passes through the adapter holes 6 of the two sets of support frames 31, and is tightened with the adapter nut 39 to achieve a high-strength, vibration-resistant, and stable connection, ensuring the reliability of the piping connection during flight. When applied to piping systems requiring frequent maintenance and disassembly (such as cooling circulation and aerodynamic regulation systems requiring high maintenance frequency), the connection method of docking structure 4 is preferred. Quick docking is achieved through the insertion of the hanging rod 45 and the fine-tuning of the docking screw 42, allowing for disassembly and assembly without complex tools, significantly reducing maintenance time and improving maintenance efficiency. Both connection methods can be freely switched according to the installation location, operating conditions, and maintenance needs of the piping, without altering the fit between the support structure 3 and the adapter pipe 1 and heat insulation pipe 2, ensuring the stability and adaptability of the overall connector structure.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flexible connector for aircraft piping, characterized in that, Includes a transfer pipe (1), which is fitted with an insulation pipe (2). The transfer pipe (1) is a flexible pipe body, and the insulation pipe (2) is a metal corrugated pipe structure. Several support structures (3) are detachably installed on the transfer pipe (1), and the support structures (3) are located inside the transfer pipe (1). Several docking structures (4) are detachably installed between the support structures (3). Among them, the support structure (3) clamps the outside of the adapter pipe (1) to support the heat insulation pipe (2) and prevent the heat insulation pipe (2) from contacting the adapter pipe (1). The support structure (3) and the docking structure (4) work together to realize the quick docking and fixing of the pipeline. The support structure (3) can also realize auxiliary heat dissipation, heat insulation or only for docking of the adapter pipe (1) according to actual needs.

2. The flexible connector for aircraft piping according to claim 1, characterized in that, The support structure (3) includes two pairs of support frames (31), several adjusting seats (32), several first bolts (33), several second bolts (34), several sleeves (35), several adapter screws (38), and several adapter nuts (39). Both pairs of support frames (31) are concave structures, and the ends of the support frames (31) are chamfered to prevent damage to the external connecting pipe (1). One end of the support frame (31) is wider than the other end. A cross-shaped adjustment groove (5) is opened through the middle of one end of the support frame (31) and connected to the other end. The ends of the support frames (31) are provided with transition holes (6), and the transition holes (6) are opposite to the middle of the adjustment groove (5). The two pairs of support frames (31) are staggered and inserted into each other. After the two pairs of support frames (31) are inserted into each other, they form a grid structure and have eight ends with transition holes (6). Several adjustment seats (32) are H-shaped and are movably inserted into the adjustment grooves (5) of the support frames (31). The seat (32) is located at the opposite intersection of the support frame (31). Several first bolts (33) are respectively screwed onto one side wall of the adjusting seat (32), and the first bolts (33) are pressed against one side wall of the support frame (31). Several second bolts (34) are respectively movably inserted through the middle of the other end of the adjusting seat (32), and the second bolts (34) are movably inserted through the adjustment groove (5). Several second bolts (34) are respectively pressed against the inner wall of the other end of the support frame (31). Several sleeves (35) are respectively detachably fitted onto both ends of the support frame (31). Several adapter screws (38) are respectively movably inserted through the adapter hole (6) for docking of the two sets of support structures (3). Several adapter nuts (39) are respectively screwed onto both ends of the adapter screws (38) for fixing.

3. The flexible connector for aircraft piping according to claim 2, characterized in that, The support structure (3) also includes several liquid cylinders (36) and several fans (37). Several liquid cylinders (36) are detachably screwed onto one end of the sleeve (35), and liquid can be filled into the liquid cylinder (36) for heat absorption. Several fans (37) are provided with mounting screws on their side walls. Several fans (37) are screwed onto the side wall of the sleeve (35) by mounting screws, and the fans (37) are located between one end of the support frame (31).

4. The flexible connector for aircraft piping according to claim 3, characterized in that, The support structure (3) forms a grid structure through the support frame (31), and the transfer pipe (1) is fitted in the middle of the grid structure.

5. The flexible connector for aircraft piping according to claim 4, characterized in that, The chamfered portions at both ends of the support frame (31) are fitted and supported against the inner walls at both ends of the heat insulation pipe (2).

6. A flexible connector for aircraft piping according to claim 5, characterized in that, The docking structure (4) includes a docking slide (41), a docking screw (42), a pair of movable seats (43), a third bolt (44), and a pair of hanging rods (45); The docking slide (41) is rectangular, and a groove is provided in the middle of the docking slide (41). One end of the docking screw (42) movably passes through the middle of the docking slide (41), and the docking screw (42) can rotate. One end of the docking screw (42) is provided with an internal hexagonal drive port. A pair of movable seats (43) are symmetrically arranged on the docking slide (41), and the movable seats (43) are respectively screwed to the docking screw (42). The pair of movable seats (43) are connected by the docking screw (42). 42) Rotate to move relative to each other. The other end of each pair of movable seats (43) is provided with a mounting hole (7). The third bolt (44) is screwed onto the side wall of the movable seat (43) and connected to the mounting hole (7). One end of each pair of hanging rods (45) is detachably inserted into the mounting hole (7) and fixed by the third bolt (44). The other end of the hanging rod (45) is detachably inserted into the adapter hole (6) of the support frame (31).

7. A flexible connector for aircraft piping according to claim 6, characterized in that, The docking structure (4) is connected to the corresponding support frame (31) between the two sets of support structures (3) by inserting a hanging rod (45).

8. A flexible connector for aircraft piping according to claim 7, characterized in that, The support structure (3) is set in a corresponding number according to the length of the transfer pipe (1) and the heat insulation pipe (2) to prevent the heat insulation pipe (2) from contacting the transfer pipe (1) during bending.

9. A flexible connector for aircraft piping according to claim 8, characterized in that, The support frame (31) is equipped with a docking structure (4) or a transition screw (38) according to the connection requirements.

Images