Pipe connector, pipe system and launch vehicle

Abstract

The application relates to the technical field of pipeline connection, and discloses a pipeline connector, a pipeline system and a carrier rocket. The pipeline connector comprises a socket, a plug assembly and an unlocking ring. The socket comprises a seat body and a protruding part arranged on the seat body. The plug assembly comprises a plug body and a hook claw structure. The plug body is in plug-in connection with the socket. The hook claw structure comprises a hook claw and an elastic locking piece. The hook claw is rotatably connected to the plug body. The hook claw has a locking state of being hooked to the protruding part and an unlocking state of being separated from the protruding part. The elastic locking piece is arranged between the plug body and the hook claw and is suitable for applying locking force to the hook claw so that the hook claw is in the locking state. The unlocking ring is sleeved on the plug body. The unlocking ring has a locking station which is arranged in space from the hook claw and an unlocking station which pushes the hook claw away from the protruding part. The unlocking ring can be switched between the locking station and the unlocking station. The pipeline connector can meet the requirements of quick disassembly and assembly, self-locking and anti-dropping, reliable connection and convenient operation at the same time.

Description

Technical Field

[0001] This invention relates to the field of pipeline connection technology, specifically to pipeline connectors, pipeline systems, and launch vehicles. Background Technology

[0002] Reliable connections in gas pipeline systems are crucial. Pipeline connectors, as core components connecting pneumatic pipelines, are essential for achieving sealed and rapid connection and disconnection between plugs and sockets. Currently, pipeline connectors primarily employ threaded connections, snap-fit ​​quick-connects, plug-in snap-fits, or U-shaped snap-fit ​​connections. However, these traditional connection methods suffer from the following problems in practical use: threaded connections have low assembly and disassembly efficiency, making them unsuitable for applications requiring rapid plug-and-socket connection; snap-fit ​​quick-connects have poor axial tensile strength, are prone to loosening and leakage, and lack a reliable self-locking anti-loosening structure; plug-in snap-fit ​​structures have low connection strength and are prone to wear and loosening after repeated insertion and removal; U-shaped snap-fits require specialized tools, are prone to component loss, and have cumbersome assembly procedures. Existing pipeline connectors struggle to simultaneously meet the comprehensive requirements of rapid assembly and disassembly, self-locking anti-loosening, reliable connection, and convenient operation, limiting their application in areas such as rapid connection and rapid disconnection in gas supply systems. Summary of the Invention

[0003] This invention provides a pipeline connector, a pipeline system, and a launch vehicle to solve the problem that pipeline connectors cannot simultaneously meet the requirements of rapid assembly and disassembly, self-locking and anti-disconnection, reliable connection, and convenient operation.

[0004] In a first aspect, the present invention provides a conduit connector, comprising: a socket, including a base body and a protrusion disposed on the base body; a plug assembly, including a plug body and a hook structure, the plug body being pluggably connected to the socket, the hook structure including a hook and an elastic locking member, the hook being rotatably connected to the plug body, the hook having a locked state engaged with the protrusion and an unlocked state disengaged from the protrusion, the elastic locking member being disposed between the plug body and the hook and adapted to apply a locking force to the hook so that the hook is in the locked state; and an unlocking ring, sleeved on the plug body, the unlocking ring having a locking position spaced apart from the hook and an unlocking position pushing the hook away from the protrusion, the unlocking ring being switchable between the locking position and the unlocking position.

[0005] Beneficial effects: By setting a rotatable hook and a switchable unlocking ring on the plug body, the elastic locking component can continuously apply a locking force to the hook, causing the hook to automatically close towards the plug body when no external force is applied. When it is necessary to connect the plug body and the socket, simply align the plug body with the socket and insert it. During insertion, the hook automatically opens under the pressure of the protrusion. After passing the protrusion, the elastic locking component pushes the hook to automatically reset and hook onto the protrusion. The hook automatically maintains the locked state of hooking onto the protrusion of the socket, completing the rapid assembly of the plug assembly and the socket. The operation is convenient and efficient. It can achieve self-locking and anti-disconnection after the plug assembly and socket are plugged in. The hook structure is simple and the connection after hooking is highly reliable. When it is necessary to unlock and separate the socket and plug assembly, simply switch the unlocking ring from the locking position to the unlocking position. The unlocking ring pushes the hook, causing the hook to rotate relative to the plug body, thereby separating the hook from the protrusion and completing the unlocking. No additional tools are required, making it easy to operate and enabling quick separation of the plug assembly and socket. Thus, it can simultaneously meet the requirements of quick assembly and disassembly, self-locking and anti-disconnection, reliable connection, and convenient operation.

[0006] In one optional embodiment, the hook includes a first connecting segment and a second connecting segment fixedly connected, the end of the first connecting segment away from the second connecting segment being connected to the plug body; the second connecting segment is spaced apart from the plug body, and the first connecting segment is inclined relative to the plug body; the unlocking ring is slidably fitted onto the plug body, and the ring width of the unlocking ring is smaller than the distance between the second connecting segment and the plug body.

[0007] Beneficial effects: It ensures that the unlocking ring will not affect the self-locking of the hook when it is in the locking position, and when the unlocking ring slides to the unlocking position, it can gradually extend into the gap between the first connecting section and the plug body, pushing the first connecting section to rotate outward to ensure that the unlocking action is carried out smoothly and reliably.

[0008] In one alternative embodiment, a limiting portion is provided on the outer wall of the plug body, and the unlocking ring is located on the side of the limiting portion facing the socket; the conduit connector further includes an elastic element that abuts between the unlocking ring and the limiting portion, and the elastic element is adapted to apply a thrust toward the socket to the unlocking ring.

[0009] Beneficial effects: The structure is simple and reasonable, has good anti-misoperation performance, and the unlocking process is simple and reliable.

[0010] In one alternative embodiment, the pawl further includes a locking hook connected to one end of the second connecting segment away from the first connecting segment, the locking hook being adapted to engage with the protrusion.

[0011] Beneficial effects: Simple structure, high reliability of hook-locking.

[0012] In one alternative embodiment, along the extension direction of the second connecting segment, the side of the locking hook opposite to the second connecting segment is configured as a first guide ramp, the first guide ramp being adapted to provide guidance for the socket.

[0013] Beneficial effects: The first guide slope guides the locking hook to smoothly engage with the protrusion during the assembly of the plug assembly and the socket, playing a guiding role, completing the plug-in locking, reducing plug-in resistance, and making operation convenient.

[0014] In one alternative embodiment, the conduit connector further includes a gasket detachably disposed on the side of the protrusion away from the plug body, and the claw engages with the side of the gasket opposite to the protrusion.

[0015] Beneficial effects: By setting a shim on the protrusion, the hook directly engages with the shim, which improves the hooking force and enhances the stability of the fit between the hook and the protrusion. It can also accommodate the axial dimension machining error of the socket. Furthermore, the shim is a detachable and replaceable component, and its thickness can be selected according to usage requirements, making it easy to adjust the hooking tightness. At the same time, when the shim is worn, only the shim needs to be replaced to continue using the device, reducing maintenance costs.

[0016] In one alternative embodiment, the conduit connector further includes a cable connected to the unlocking ring; And / or, the plug body includes a plug section adapted to be plugged into the socket body; the conduit connector further includes a sealing ring fitted onto the plug section.

[0017] Beneficial effects: The cable provides a point of leverage for the user, making it easier for the user to pull the unlocking ring and improving the ease of operation; And / or, a sealing ring is used to seal the plug body and the socket body. The sealing ring can fill the gap between the plug section and the socket body, improving the sealing performance of the connection position.

[0018] In one alternative embodiment, the number of the claw structures is multiple, and the multiple claw structures are distributed at intervals along the circumference of the plug body.

[0019] Beneficial effects: It can improve the overall connection strength and locking reliability of pipe connectors, ensure the uniformity of circumferential force after the plug assembly and socket are connected, and improve the stability of pipe connection.

[0020] Secondly, the present invention also provides a piping system, comprising: the aforementioned piping connector, wherein the number of the piping connectors is one or more. Since the piping system includes the piping connector and has the same technical effects as the piping connector, it will not be described in detail here.

[0021] Thirdly, the present invention also provides a launch vehicle, comprising: a rocket body; and the aforementioned piping system, wherein the piping system is disposed within the rocket body. Since the launch vehicle includes a piping system and has the same technical effects as the piping system, it will not be described in detail here. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of a pipe connector according to an embodiment of the present invention when the hook is in the locked state; Figure 2 for Figure 1 The diagram shows the structure of the pipe connector when the hook is in an unlocked state. Figure 3 for Figure 1 The diagram shows the structure of the pipe connector when the hook is in another unlocked state. Figure 4 for Figure 1 A cross-sectional view of the pipe connector shown; Figure 5 This is a schematic diagram of a plug assembly according to an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures: 1. Socket; 11. Socket body; 12. Protrusion; 13. First channel; 2. Plug assembly; 21. Plug body; 211. Plug section; 212. Mounting groove; 22. Hook structure; 221. Hook; 2211. First connecting section; 2212. Second connecting section; 2213. Locking hook; 2214. First guide slope; 2215. Abutment groove; 222. Elastic locking element; 223. Hinge element; 224. Anti-disengagement element; 23. Limiting part; 24. Second channel; 3. Unlocking ring; 4. Pull cable; 5. Elastic element; 6. Gasket; 7. Sealing ring. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, 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.

[0026] Pipeline connectors are used in launch vehicles. Reliable connections in the high-pressure gas pipeline system are crucial before and after launch. As a core component connecting pneumatic pipelines, the connector's core function is to achieve sealed and rapid connection and disconnection between the plug and socket. Currently, pipeline connectors mostly use threaded connections, snap-fit ​​quick-connects, plug-in snap-fits, or U-shaped snap-fit ​​connections. These traditional connection methods generally have the following problems in practical use: Threaded connections require tools for screwing and assembly, resulting in low assembly and disassembly efficiency. Repeated use can easily lead to stripping and sealing failure, and the screwing process can easily generate torsional stress on the pipeline, making them unsuitable for applications requiring rapid assembly and disassembly and high pipeline stability. Ordinary snap-fit ​​quick-connects rely on radial clamping for connection, resulting in poor axial tensile strength. They are prone to loosening and leakage under vibration, pressure fluctuations, or accidental pulling, and lack a reliable self-locking anti-loosening structure, leading to insufficient safety. Plug-in snap-fit ​​structures are mostly shallow-engagement, resulting in low connection strength. They are prone to wear and loosening after repeated insertion and removal, and cannot meet the requirements of high-pressure, high-frequency use. U-shaped clips and pin-type connectors require special tools to operate, the parts are scattered and easily lost, the assembly steps are cumbersome, and they are not conducive to quick maintenance and emergency use.

[0027] In summary, existing pipe connectors cannot simultaneously meet the comprehensive requirements of rapid assembly and disassembly, self-locking, reliable connection, stable sealing, and convenient operation, thus limiting their application in areas such as rapid connection and rapid disconnection in rocket launch systems, rocket body piping, and ground test gas supply systems. Therefore, developing a hook-type pipe connector with a simple structure, reliable locking, and rapid disconnection has significant practical importance and application value.

[0028] The following is combined Figures 1 to 5 The following describes embodiments of the present invention.

[0029] According to embodiments of the present invention, in one aspect, a conduit connector is provided, such as... Figures 1 to 4As shown, the pipe connector includes: a socket 1, a plug assembly 2, and an unlocking ring 3. The socket 1 includes a base body 11 and a protrusion 12 disposed on the base body 11; the plug assembly 2 includes a plug body 21 and a hook structure 22, the plug body 21 being pluggably connected to the socket 1, the hook structure 22 including a hook 221 and an elastic locking member 222, the hook 221 being rotatably connected to the plug body 21, the hook 221 having a locked state of engaging with the protrusion 12 and an unlocked state of disengaging from the protrusion 12, the elastic locking member 222 being disposed between the plug body 21 and the hook 221, and being adapted to apply a locking force to the hook 221 so that the hook 221 is in the locked state; the unlocking ring 3 is sleeved on the plug body 21, the unlocking ring 3 having a locking position spaced apart from the hook 221, and an unlocking position that pushes the hook 221 away from the protrusion 12, the unlocking ring 3 being switchable between the locking position and the unlocking position.

[0030] It should be noted that the locking position and the unlocking position are different positions on the plug body 21; when the unlocking ring 3 is in the locking position, the unlocking ring 3 and the hook structure 22 are spaced apart and no force is applied to the hook structure 22, and the hook 221 is in the locked state; when the unlocking ring 3 is in the unlocking position, the unlocking ring 3 and the hook 221 interact, and the unlocking ring 3 pushes the hook 221 to disengage from the protrusion 12 and switch to the unlocked state; the unlocking ring 3 can switch between the locking position and the unlocking position to drive the hook structure 22 to switch between the locked state and the unlocked state.

[0031] Using the pipe connector of this embodiment, by providing a rotatable hook 221 and a switchable unlocking ring 3 on the plug body 21, the elastic locking member 222 can continuously apply a locking force to the hook 221, so that the hook 221 automatically closes to the plug body 21 when no external force is applied. When it is necessary to connect the plug body 21 and the socket 1, the plug body 21 is directly aligned with the socket 1 and inserted. During the insertion process, the hook 221 is automatically opened by the pressure of the protrusion 12. After passing the protrusion 12, the elastic locking member 222 can push the hook 221 to automatically reset and hook the protrusion 12. The hook 221 automatically maintains the locked state of hooking the protrusion 12 of the socket 1, thus completing the connection between the plug assembly 2 and the socket. The device allows for rapid assembly, convenient and efficient operation, and enables self-locking and anti-detachment after the plug assembly 2 and socket 1 are connected. The hook structure 22 has a simple structure and high reliability after hooking. When it is necessary to unlock and separate the socket 1 and plug assembly 2, it is only necessary to switch the unlocking ring 3 from the locking position to the unlocking position. The unlocking ring 3 pushes the hook 221, causing the hook 221 to rotate relative to the plug body 21, thereby separating the hook 221 from the protrusion 12 and completing the unlocking. No additional tools are required, making the operation convenient and enabling rapid separation of the plug assembly 2 and socket 1. This simultaneously meets the requirements of rapid assembly and disassembly, self-locking and anti-detachment, reliable connection, and convenient operation.

[0032] It should be noted that the hook 221 being rotatably connected to the plug body 21 means that when the hook 221 is subjected to an external force, the hook 221 can overcome the locking force of the elastic locking member 222 and rotate to open or close relative to the plug body 21, so as to switch the hook 221 between the locked state and the unlocked state; while in the natural state (when not subjected to an external force), the hook 221 automatically closes to the plug body 21 under the action of the elastic locking member 222, and when the plug body 21 is plugged into the socket 1, the hook 221 automatically maintains the locked state of hooking with the protrusion 12.

[0033] It should be noted that socket 1 serves as a fixing base for the conduit connector, further combining... Figure 4 As shown, the base body 11 has a first channel 13 with openings at both ends. Along the extension direction of the first channel 13, one end of the socket 1 is integrally formed with a first connecting end that connects to the first pipeline, and the other end has a plug mating cavity that engages with the plug body 21. A protrusion 12 is connected to the side of the base body 11 away from the first channel 13 (i.e., on the outer wall of the base body 11). The protrusion 12 protrudes from the outer wall of the base body 11 and is used for hooking the claw 221 to achieve locking. The plug body 21 has a second channel 24 with openings at both ends. Along the extension direction of the second channel 24, one end of the plug body 21 has a second connecting end that connects to the second pipeline, and the other end is a plug section 211 that engages with the socket 1. The inner diameter of the plug mating cavity is adapted to the outer diameter of the plug section 211. The plug mating cavity is used to accommodate the plug section 211 of the plug assembly 2 and achieve precise positioning. After the plug body 21 is plugged into the socket 1, the second channel 24 communicates with the first channel 13 for fluid flow. Among them, the first pipeline and the second pipeline are external pipelines; the external pipeline can be a gas pipeline, and the corresponding fluid is gas; the external pipeline can also be a liquid pipeline, and the corresponding fluid is liquid; the external pipeline is preferably a gas pipeline.

[0034] Optionally, the orthographic projections of the first channel 13 and the second channel 24 on a cross section perpendicular to their center lines are both circular.

[0035] Preferably, the protrusion 12 is integrally formed with the seat body 11, which has a simple structure and high reliability.

[0036] In one embodiment, there are multiple hook structures 22, which are distributed circumferentially along the plug body 21. The plug assembly 2 is hooked and locked to the socket 1 by the multiple hook structures 22, which can improve the overall connection strength and locking reliability of the pipeline connector, and avoid loosening due to unilateral force. At the same time, the multiple hook structures 22 distributed circumferentially along the plug body 21 can ensure the uniformity of circumferential force after the plug assembly 2 and the socket 1 are connected, and improve the stability of the pipeline connection.

[0037] Preferably, the multiple hook structures 22 are evenly distributed along the circumference of the plug body 21, which can further improve the uniformity of circumferential force, make the locking force distribution after the plug assembly 2 is connected to the socket 1 more balanced, and further improve the connection reliability and stability.

[0038] Optionally, the number of hook structures 22 is three, and the three hook structures 22 are evenly spaced along the circumference of the plug body 21. Of course, the number of hook structures 22 can also be two, four or other numbers, depending on actual needs, and no specific limitation is made here.

[0039] In one embodiment, the protrusion 12 is a convex ring, which surrounds the seat body 11. This design is simple, easy to manufacture, and allows the hooks 221 to engage at any position along the circumference of the protrusion 12 without requiring alignment, thus facilitating operation. Alternatively, as an alternative implementation, the protrusion 12 can be configured as multiple independent protrusions, spaced apart along the circumference of the seat body 11. Each protrusion can engage with a corresponding hook structure 22, achieving the same locking function.

[0040] In one embodiment, further combination Figure 4 As shown, the plug body 21 is inserted into the lower side of the socket 1, the protrusion 12 is located at the lower end of the socket 1, and the hook 221 passes around the protrusion 12 and hooks onto the upper side of the protrusion 12, thereby pressing the socket 1 downwards onto the plug body 21. Here, "lower side" refers to... Figure 4 The "down" direction indicated by the middle arrow refers to the side where the arrow points. Figure 4 The direction indicated by the middle arrow, "down," refers to the upper side. Figure 4 The side in the direction indicated by the middle arrow "up"; the up and down direction is in the same direction as the axis of the socket 1 and the plug body 21, that is, in the same direction as the extension direction of the center line of the first channel 13 and the center line of the second channel 24.

[0041] In one embodiment, the lower outer edge of the socket 1 is provided with a second guide slope to guide the socket 1 smoothly over the hook 221, thereby allowing the plug body 21 to be smoothly inserted into the socket 1 and into the plug mating cavity. Specifically, the protrusion 12 is located at the lower end of the socket 1, and the lower outer edge of the protrusion 12 is constructed as a second guide slope.

[0042] In one embodiment, further combination Figure 4As shown, the hook 221 includes a first connecting segment 2211 and a second connecting segment 2212 that are fixedly connected. The end of the first connecting segment 2211 away from the second connecting segment 2212 is connected to the plug body 21. The second connecting segment 2212 is spaced apart from the plug body 21, and the first connecting segment 2211 is inclined relative to the plug body 21. The unlocking ring 3 is slidably sleeved on the plug body 21. The ring width of the unlocking ring 3 is smaller than the distance between the second connecting segment 2212 and the plug body 21, and larger than the distance between at least a portion of the first connecting segment 2211 and the plug body 21. By setting the hook 221 as a segmented structure, the distance between the second connecting segment 2212 and the plug body 21 provides sufficient space for the unlocking ring 3, ensuring that the unlocking ring 3 will not affect the self-locking of the hook 221 when it is in the locked position. When the unlocking ring 3 slides to the unlocking position, it can gradually extend into the gap between the first connecting segment 2211 and the plug body 21, pushing the first connecting segment 2211 to rotate outward, thereby driving the entire hook 221 to open and disengage from the protrusion 12, realizing the hook 221 switching from the locked state to the unlocked state. The structure is simple and reasonably designed, which can ensure that the unlocking action is performed smoothly and reliably.

[0043] It should be noted that the unlocking ring 3 is slidably fitted onto the plug body 21, and the locking position and unlocking position are different positions on the plug body 21 extending along its centerline. The first connecting segment 2211 is inclined relative to the plug body 21, meaning that the first connecting segment 2211 is inclined relative to the centerline of the plug body 21 (i.e., the centerline of the second channel 24). When the hook 221 is in the locked state, the distance between different positions on the first connecting segment 2211 and the outer wall of the plug body 21 is not equal. Specifically, the first connecting segment 2211 has a first end that is rotatably connected to the plug body 21 and a second end that is fixedly connected to the second connecting segment 2212. At least when the hook 221 is in the locked state, the distance between the second end and the outer wall of the plug body 21 is greater than the distance between the first end and the outer wall of the plug body 21. Along the direction from the second end to the first end, the distance between the first connecting segment 2211 and the outer wall of the plug body 21 gradually decreases.

[0044] It should be noted that the unlocking ring 3 is a ring structure that can slide along the axial direction of the plug body 21. The ring width of the unlocking ring 3 is smaller than the distance between the second connecting segment 2212 and the plug body 21. The inner ring of the unlocking ring 3 is close to the outer wall of the plug body 21. When the unlocking ring 3 is located between the second connecting segment 2212 and the plug body 21, the unlocking ring 3 and the second connecting segment 2212 are spaced apart. The unlocking ring 3 will not contact the hook 221 and will not affect the state of the hook 221. That is, when the hook 221 is in the locked state, the part of the plug body 21 directly opposite the second connecting segment 2212... The position is the locking position of the unlocking ring 3; when the unlocking ring 3 slides away from the socket 1, the unlocking ring 3 can squeeze into the gap between the first connecting segment 2211 and the outer wall of the plug body 21. As the unlocking ring 3 is pushed forward, the unlocking ring 3 will push the first connecting segment 2211 to rotate away from the plug body 21, thereby driving the entire hook 221 to rotate, so that the hook 221 disengages from the protrusion 12 of the socket 1, completing the unlocking. That is, when the hook 221 is in the locked state, the position on the plug body 21 directly opposite the first connecting segment 2211 is the unlocking position of the unlocking ring 3.

[0045] The outer side of the unlocking ring 3 is adapted to the inner side of the hook 221, so that when the unlocking ring 3 slides to the unlocking position, it can contact the inner side of the hook 221 and apply pressure, driving the hook 221 to open outward and achieve quick unlocking; the unlocking ring 3 is adapted to multiple hooks 221 one by one, and when the unlocking ring 3 slides down, it can simultaneously squeeze multiple hooks 221 to open outward.

[0046] In one embodiment, the unlocking ring 3 is constructed with an arc-shaped transition surface on the side of its radial direction away from the plug body 21, so that when the unlocking ring 3 abuts against the first connecting segment 2211, the unlocking ring 3 is tangent to the first connecting segment 2211, and the unlocking ring 3 is adapted to the inner position of the hook 221, which can reduce wear during the pushing process and ensure that the unlocking process is carried out smoothly.

[0047] In one embodiment, further combination Figure 4 and Figure 5As shown, a limiting part 23 is provided on the outer wall of the plug body 21, and the unlocking ring 3 is located on the side of the limiting part 23 facing the socket 1; the pipe connector also includes an elastic member 5, which abuts between the unlocking ring 3 and the limiting part 23, and the elastic member 5 is adapted to apply a thrust toward the socket 1 to the unlocking ring 3. By providing a limiting part 23 protruding from the outer wall of the plug body 21, and forming a supporting surface on the side of the limiting part 23 facing the socket 1, the elastic element 5 is provided with support and limitation. By providing the elastic element 5 between the unlocking ring 3 and the limiting part 23, the elastic element 5 can always apply a pushing force towards the socket 1 to the unlocking ring 3, so that the unlocking ring 3 automatically stays in the locked position when not pressed by external force, avoiding accidental sliding of the unlocking ring 3 and mis-locking, and further improving the locking reliability of the pipeline connector. Only when the unlocking ring 3 is pulled by external force to move towards the limiting part 23 can the unlocking ring 3 overcome the pushing force of the elastic element 5 and move towards the unlocking position, thereby completing the unlocking. The structural design is simple and reasonable, with good anti-misoperation performance, and the unlocking process is simple and reliable.

[0048] It should be noted that the elastic element 5 and the unlocking ring 3 are sequentially installed on the plug body 21 of the plug assembly 2, with the elastic element 5 located on the side of the unlocking ring 3 facing the limiting part 23. One end of the elastic element 5 abuts against the unlocking ring 3, and the other end abuts against the support surface of the limiting part 23. Under normal conditions (i.e., when the unlocking ring 3 is not pulled by external force), the elastic element 5 lifts the unlocking ring 3 away from the first connecting section 2211, keeping the unlocking ring 3 in the locked position, preventing accidental movement of the unlocking ring from causing false locking, and further improving the stability and reliability of the pipeline connector connection. When unlocking is required, simply pull the unlocking ring 3 away from the socket 1 to overcome the elastic support force of the elastic element 5, and the unlocking ring 3 can be pulled to the unlocking position to complete the unlocking operation. After releasing the unlocking ring 3, the elastic element 5 can automatically push the unlocking ring 3 back to the locked position for easy next insertion, without the need for manual reset, making the operation more convenient.

[0049] In one embodiment, the elastic element 5 is a reset spring, which is sleeved on the plug body 21. It has a simple structure, stable elastic force, long service life, and can stably apply a pushing force to the unlocking ring 3, ensuring that the unlocking ring 3 is stably kept in the locked position under natural conditions.

[0050] In other embodiments, the elastic element 5 may also be a rubber elastic sleeve or other elastic component, as long as it can stably apply a thrust toward the socket to the unlocking ring, and no specific limitation is made here.

[0051] In one embodiment, further combination Figure 4As shown, the hook 221 also includes a locking hook 2213, which is connected to the end of the second connecting section 2212 away from the first connecting section 2211. The locking hook 2213 is adapted to engage with the protrusion 12. The locking hook 2213 is bent toward the centerline of the plug body 21. When the hook 221 is in the locked state, the locking hook 2213 hooks onto the protrusion 12, thereby pressing the socket 1 axially toward the plug body 21, realizing the axial locking of the plug assembly 2 and the socket 1. The locking structure is simple and the hook locking reliability is high.

[0052] Preferably, the claw 221 is integrally formed, and the locking hook 2213 is integrally formed at the end of the second connecting segment 2212 away from the first connecting segment 2211, so that the overall structure of the claw 221 has high reliability and high connection strength.

[0053] In one embodiment, along the extending direction of the second connecting segment 2212, the side of the locking hook 2213 opposite to the second connecting segment 2212 is configured as a first guide ramp 2214, which is adapted to provide guidance for the socket 1. Further integration Figure 4 As shown, when the hook 221 is in the locked state, the upper surface of the locking hook 2213 is the first guide slope 2214. The first guide slope 2214 is an inclined surface that is higher on the outside and lower on the inside, that is, along the direction from the outer end of the locking hook 2213 toward the center line of the plug body 21, the first guide slope 2214 gradually slopes downward. When the socket 1 is inserted into the plug body 21, the lower edge of the socket 1 can push the locking hook 2213 outward along the first guide slope 2214, without having to manually pry open the hook 221, further improving the ease of assembly. After the locking hook 2213 passes the protrusion 12, the elastic locking member 222 drives the hook 221 to automatically reset, so that the locking hook 2213 stably hooks the protrusion 12. When the plug assembly 2 and the socket 1 are assembled, the first guide slope 2214 guides the locking hook 2213 to smoothly hook onto the protrusion 12, playing a guiding role, completing the insertion and locking, reducing insertion resistance, and making operation convenient.

[0054] In one embodiment, the hook 221 is mounted on the limiting part 23, which is fixedly connected to the plug body 21. The limiting part 23 has a receiving groove, and a connecting bracket is formed on each side of the limiting part 23 along the circumference of the plug body 21 on both sides of the receiving groove. The bottom wall of the receiving groove is formed on the side facing the plug body 21. The end of the hook 221 is located in the receiving groove and is rotatably connected to the connecting bracket. The bottom wall of the receiving groove is spaced apart from the outer circumferential surface of the plug body 21 to form an upward supporting surface on the limiting part 23. The limiting part 23 also serves to install the hook 221 and support the elastic member 5, which simplifies the structure, facilitates processing and production, and reduces the overall space occupied by the plug assembly 2.

[0055] In one embodiment, the hook structure 22 further includes a hinge 223, through which the hook 221 is hinged to the limiting part 23, thereby realizing a rotatable connection between the hook 221 and the plug body 21.

[0056] Optionally, the hinge 223 can be a pin, a pin, or a hinge shaft, etc., which has a simple structure, reliable connection, and can ensure the rotational stability of the hook 221 and meet the rotational requirements of multiple unlocking and locking.

[0057] In one embodiment, the hinge 223 is a pin that rotatably passes through the two connecting brackets of the limiting part 23. The head of the pin is located on the side of one connecting bracket away from the other connecting bracket. The shank of the pin passes through the receiving groove and extends out of the other connecting bracket, and the extended end is provided with a socket. The hook structure 22 also includes an anti-detachment member 224, which is inserted into the socket to axially limit the pin, ensuring that the pin is installed firmly and without loosening, and preventing the pin from falling off during use.

[0058] Optionally, the anti-detachment component 224 can be a cotter pin, which has a simple structure, is easy to install, and is inexpensive. Of course, other anti-detachment components such as snap rings can also be used to limit the hinge component 223.

[0059] In one embodiment, the elastic locking element 222 is a locking torsion spring, further combined with Figure 4 and Figure 5 As shown, the hook 221 has an abutment groove 2215, the hinge 223 passes through the abutment groove 2215, and a locking torsion spring is wound around the hinge 223 and has two ends extending out of the hinge 223. One end of the locking torsion spring abuts against the plug body 21, and the other end abuts against the abutment groove 2215, which provides a continuous inward locking force for the hook 221, ensuring that the hook 221 has a tendency to retract inward, and ensuring that the hook 221 is always stably locked when not subjected to external force, thereby ensuring a reliable connection between the plug assembly 2 and the socket 1. It should be noted that the locking torsion spring has high reliability. Each hook 221 is provided with a corresponding locking torsion spring, which can ensure that the opening angle of multiple hooks 221 is consistent and the locking force is uniform, providing a stable spring force for self-locking and improving the reliability of the overall structure.

[0060] In one embodiment, the number of hook structures 22 is three, then the plug assembly 2 includes a plug body 21, three hooks 221, three pins, three cotter pins and three locking torsion springs. Each hook 221 is hinged to the corresponding limiting part 23 by the corresponding pin. The protruding end of each pin is inserted with the corresponding cotter pin. Each pin is fitted with a corresponding locking torsion spring, and the two ends of the locking torsion spring abut against the plug body 21 and the corresponding abutment groove 2215, respectively. The overall locking force is uniform and the connection reliability is high.

[0061] In one embodiment, the pipeline connector further includes a gasket 6, which is detachably disposed on the side of the protrusion 12 away from the protrusion 21 along the axial direction of the plug body 21. A hook 221 engages with the side of the gasket 6 opposite to the protrusion 12. By providing the gasket 6 on the protrusion 12, the hook 221 directly engages with the gasket 6, which improves the engagement strength and stability of the engagement between the hook 221 and the protrusion 12. It also accommodates axial dimensional machining errors of the socket 1, enhancing compatibility. Furthermore, the gasket 6 is a detachable and replaceable component, and its thickness can be selected according to usage requirements, facilitating adjustment of the hook tightness of the hook 221. Additionally, when the gasket 6 wears down, only the gasket 6 needs to be replaced for continued use, without replacing the entire pipeline connector, reducing maintenance costs. Specifically, a gasket 6 of appropriate thickness is selected based on the actual operating conditions of the gas supply scenario to adapt to different unlocking resistances.

[0062] In one embodiment, the protrusion 12 is a raised ring that surrounds the plug body 21, and correspondingly, the gasket 6 is a thin ring structure that fits the raised ring structure.

[0063] In one embodiment, the side of the protrusion 12 facing the gasket 6 is a plane, and the gasket 6 is placed and attached to the plane of the protrusion 12. The structure is simple and easy to manufacture.

[0064] Alternatively, in other embodiments, the protrusion 12 may be configured with an annular groove on the side facing the gasket 6, with the gasket 6 located within the annular groove, which can further improve the stability of the gasket 6 after installation. It should be noted that the thickness of the gasket 6 is greater than the depth of the annular groove, that is, after the gasket 6 is installed in the annular groove, the gasket 6 must protrude from the annular groove to ensure that the locking hook 2213 can abut against the gasket 6.

[0065] In one embodiment, the gasket 6 has hook portions corresponding to the number and position of the hook structures 22. When the socket 1 and the plug assembly 2 are plugged in, the locking hook 2213 of each hook 221 engages with one hook portion. When the plug assembly 2 and the socket 1 are plugged in, each hook 221 hooks into the hook portion of the gasket 6 to achieve an axial self-locking connection. Pulling the cable 4 can disengage the locking hook 2213 from the hook portion of the gasket 6, achieving quick release.

[0066] It should be noted that the side of the locking hook 2213 facing the gasket 6 is adapted to the hooking part of the gasket 6 to achieve stable hooking and achieve the effect of axial locking and limiting.

[0067] In one embodiment, further combination Figure 4As shown, the side of the locking hook 2213 facing the protrusion 12 is a plane. At this time, the hook part is the same as other positions on the gasket 6. The side of the gasket 6 away from the protrusion 12 is a plane. The structure is simple and easy to produce and assemble.

[0068] In other embodiments, the side of the locking hook 2213 facing the protrusion 12 is concave. Correspondingly, the hooking part is the protrusion on the pad 6 that protrudes away from the protrusion 12. The concave surface and the protrusion engage and limit each other, which can further prevent the locking hook 2213 from slipping and moving after hooking, further improve the stability of the engagement between the hook 221 and the pad 6, and make the locking reliability better.

[0069] In one embodiment, the pipe connector further includes a pull cable 4 connected to the unlocking ring 3. The end of the pull cable 4 is connected to the unlocking ring 3, and the portion not connected to the unlocking ring 3 is reserved with sufficient length. The pull cable 4 can extend to a position convenient for operators or machine operators. By pulling the pull cable 4, the unlocking ring 3 can be driven to slide along the plug body 21 towards the unlocking position. By providing the pull cable 4 on the unlocking ring 3, pulling the pull cable 4 drives the unlocking ring 3 to slide downwards along the plug body 21, realizing the switching of the unlocking ring 3 from the locking position to the unlocking position, thereby squeezing the claws 221 to open and achieve unlocking. The pull cable 4 provides a force application point for the user, making it easier for the user to pull the unlocking ring 3, thus improving operational convenience.

[0070] In one embodiment, the unlocking ring 3 has mounting holes, through which the cable 4 is connected to the unlocking ring 3. Preferably, there are two mounting holes, which are spaced apart circumferentially along the unlocking ring 3. This helps to improve the reliability of the connection between the cable 4 and the unlocking ring 3 and the uniformity of force when the cable 4 is pulled.

[0071] In one embodiment, the cable 4 is a steel wire cable made of high-strength flexible steel wire. One end of the cable is fixedly connected to the unlocking ring 3, and the other end extends to the operable position. The steel wire cable has high strength, long service life, and can stably withstand the force of pulling the unlocking ring 3. It is not easy to break and has high reliability. It is understood that, as an alternative implementation, the cable 4 can also be other high-strength flexible cables, such as nylon cables, fiber cables, etc., as long as they can meet the strength requirements for pulling the unlocking ring 3.

[0072] In one embodiment, the plug body 21 includes a plug section 211 adapted to be plugged into the socket body 11; the pipe connector also includes a sealing ring 7, which is sleeved on the plug section 211. It should be noted that the plug section 211 is a portion of the plug body 21 near the plug end. After the plug assembly 2 and the socket 1 are assembled, the plug section 211 is inserted into the plug mating cavity of the socket 1, and the socket body 11 is sleeved on the plug section 211. After the plug assembly 2 and the socket 1 are properly inserted, the sealing ring 7 is compressed by the inner wall of the plug mating cavity of the socket 1 to form a radial seal. The plug body 21 and the socket body 11 are sealed through the sealing ring 7. The sealing ring 7 can fill the gap between the plug section 211 and the socket body 11, improving the sealing performance of the connection position, ensuring sealing reliability, preventing leakage of the medium transported in the pipeline, and ensuring the stability of the pipeline transport.

[0073] In one embodiment, an annular mounting groove 212 is provided on the outer wall of the plug section 211, and the sealing ring 7 is embedded in the mounting groove 212 to achieve radial sealing between the plug body 21 and the socket 1, thereby improving the sealing reliability.

[0074] In one embodiment, the sealing ring 7 is an elastic rubber ring, which has good elasticity and sealing effect.

[0075] The following describes the insertion process of the plug assembly 2 and the socket 1 of the conduit connector in this embodiment: Align the plug section 211 of the plug assembly 2 with the plug mating cavity of the socket 1 and slowly insert it. The second guide slope provided on the socket 1 can guide the plug assembly 2 to be inserted smoothly and reduce the insertion resistance. At this time, the first guide slope 2214 of the hook 221 contacts the bottom edge of the socket 1. After being squeezed, the hook 221 opens outward around the hinge 223. As the insertion depth increases, each hook 221 continues to open. When the plug assembly 2 is inserted into place, the locking hook 2213 of each hook 221 is just aligned with the hooking part of the gasket 6. Under the elastic force of each elastic locking member 222, each hook 221 springs back to its original position, and the locking hook 2213 hooks onto the gasket 6 to achieve axial self-locking connection. At the same time, the inner wall of the plug mating cavity of the socket 1 compresses the sealing ring 7 on the plug assembly 2 to form a reliable radial sealing structure, effectively preventing medium leakage during gas or liquid supply and completing the entire insertion process.

[0076] The following describes the separation process of the plug assembly 2 and the socket 1 of the conduit connector in this embodiment: When the gas / liquid supply system needs to be disconnected in an emergency, pull the cable 4. The cable 4 causes the unlocking ring 3 to slide downward along the axial direction of the plug body 21. The unlocking ring 3 moves downward and compresses the elastic element 5 below. At the same time, the unlocking ring 3 presses each hook 221, causing each hook 221 to open outward against the elastic force of the corresponding elastic locking element 222. The locking hook 2213 disengages from the hook part of the gasket 6. At this time, the plug assembly 2 can be pulled directly to achieve quick disconnection from the socket 1. After releasing the cable 4, the elastic element 5 extends upward under its own elastic force, pushing the unlocking ring 3 to return to the initial position of the first connecting section 2211 away from the hook 221 along the axial direction. The unlocking ring 3 disengages from each hook 221. Each hook 221 retracts inward again under the action of the corresponding elastic locking element 222, returning to the locked state, and can be used for the next plugging operation, adapting to the emergency handling needs in the gas / liquid supply scenario.

[0077] The pipe connector in this embodiment is a quick-release hook-type pipe connector. The hook 221 is hinged to the plug body 21 via a hinge 223. It achieves self-locking by hooking with the gasket 6 using an elastic locking member 222. The elastic member 5 and the unlocking ring 3 are sequentially installed on the plug body 21. The pull cable 4 is connected to the unlocking ring 3. Pulling the pull cable 4 drives the unlocking ring 3 to squeeze the hook 221 to unlock. The gasket 6 can adjust the hook tightness. The pipe connector has a compact overall structure, small size, and light weight, making it suitable for use in space-constrained installation occasions such as rocket gas supply systems. The layout of each component is reasonable, and the connection of parts is reliable. The hook 221 adopts a hinge structure and achieves self-locking in conjunction with the elastic locking member 222. It also has low insertion and removal wear, which can effectively solve many defects of traditional pipe connectors in high-pressure gas / liquid supply quick-release disconnection scenarios. It achieves the functions of self-locking and anti-detachment, reliable sealing, compact structure, and quick-release separation.

[0078] According to an embodiment of the present invention, in another aspect, a piping system is also provided, comprising: the aforementioned piping connector, wherein the number of piping connectors is one or more. The piping system further includes a first pipe and a second pipe, wherein the first pipe is inserted into the end of the socket 1 away from the plug body 21, and the second pipe is inserted into the end of the plug body 21 away from the socket 1. The first pipe and the second pipe are quickly connected and locked through the piping connector. When disassembly is required, simply pulling the cable 4 drives the unlocking ring 3 to switch to the unlocking position, thereby driving the hook 221 to switch from the locked state to the unlocked state for quick unlocking. Disassembly and maintenance are convenient, sealing reliability is high, and connection stability is good. Preferably, the piping connector is an air pipe connector, and both the first pipe and the second pipe are air pipes.

[0079] In one embodiment, the piping system includes at least two pipe connectors, which are integrated in an array to form multiple synchronous gas supply pipelines. The pull cables 4 of each pipe connector are interconnected, enabling simultaneous unlocking and rapid release of multiple connectors. All pull cables 4 can be connected by a rope, and pulling the rope will simultaneously pull the pull cables 4 on multiple pipe connectors.

[0080] According to an embodiment of the present invention, another aspect provides a launch vehicle, comprising: a rocket body and the aforementioned piping system, wherein the piping system is disposed on the rocket body. Piping connectors are used on launch vehicles, particularly on liquid-propellant launch vehicles. A launch vehicle is a type of rocket used to transport satellites, spacecraft, and other spacecraft into space; a liquid-propellant launch vehicle is a launch vehicle that uses liquid propellant as its power source.

[0081] The connector has a compact overall structure, small size, and light weight, making it suitable for use in space-constrained installations in rocket gas supply systems. The components are rationally laid out and the parts are reliably connected. The hook 221 adopts a hinge structure and is equipped with a locking torsion spring, resulting in minimal wear during insertion and removal. This effectively solves many defects of traditional pipeline connectors in scenarios involving rapid disconnection and release of high-pressure gas supply.

[0082] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A pipe connector, characterized by include: The socket (1) includes a base body (11) and a protrusion (12) disposed on the base body (11). The plug assembly (2) includes a plug body (21) and a hook structure (22). The plug body (21) is pluggably connected to the socket (1). The hook structure (22) includes a hook (221) and an elastic locking member (222). The hook (221) is rotatably connected to the plug body (21). The hook (221) has a locked state that engages with the protrusion (12) and an unlocked state that disengages from the protrusion (12). The elastic locking member (222) is disposed between the plug body (21) and the hook (221) and is adapted to apply a locking force to the hook (221) so that the hook (221) is in the locked state. Unlocking ring (3) is sleeved on the plug body (21). The unlocking ring (3) has a locking position spaced apart from the hook (221) and an unlocking position that pushes the hook (221) away from the protrusion (12). The unlocking ring (3) can switch between the locking position and the unlocking position.

2. The tubing connector of claim 1, wherein, The hook (221) includes a first connecting segment (2211) and a second connecting segment (2212) that are fixedly connected. The end of the first connecting segment (2211) away from the second connecting segment (2212) is connected to the plug body (21). The second connecting segment (2212) is spaced apart from the plug body (21), and the first connecting segment (2211) is inclined relative to the plug body (21); The unlocking ring (3) is slidably fitted onto the plug body (21), and the ring width of the unlocking ring (3) is smaller than the distance between the second connecting segment (2212) and the plug body (21).

3. The conduit connector according to claim 2, characterized in that, A limiting part (23) is provided on the outer wall of the plug body (21), and the unlocking ring (3) is located on the side of the limiting part (23) facing the socket (1); The conduit connector also includes an elastic element (5) that abuts between the unlocking ring (3) and the limiting portion (23), and the elastic element (5) is adapted to apply a thrust toward the socket (1) to the unlocking ring (3).

4. The conduit connector according to claim 2, characterized in that, The hook (221) further includes a locking hook (2213), which is connected to the end of the second connecting segment (2212) away from the first connecting segment (2211), and the locking hook (2213) is adapted to cooperate with the protrusion (12).

5. The conduit connector according to claim 4, characterized in that, Along the extension direction of the second connecting segment (2212), the side of the locking hook (2213) opposite to the second connecting segment (2212) is constructed as a first guide ramp (2214), which is adapted to provide guidance for the socket (1).

6. The conduit connector according to claim 1, characterized in that, The pipe connector further includes a gasket (6), which is detachably disposed on the side of the protrusion (12) away from the plug body (21), and the claw (221) engages with the side of the gasket (6) opposite to the protrusion (12).

7. The conduit connector according to claim 1, characterized in that, The pipeline connector further includes a cable (4) connected to the unlocking ring (3); And / or, the plug body (21) includes a plug section (211) adapted to be plugged into the socket body (11); the conduit connector also includes a sealing ring (7) fitted onto the plug section (211).

8. The conduit connector according to any one of claims 1 to 7, characterized in that, The number of hook structures (22) is multiple, and the multiple hook structures (22) are distributed circumferentially along the plug body (21).

9. A piping system, characterized in that, include: The conduit connector according to any one of claims 1 to 8, wherein the number of the conduit connectors is one or more.

10. A launch vehicle, characterized in that, include: Rocket body; The piping system of claim 9, wherein the piping system is disposed on the rocket body.

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