Plug-in disconnecting device

Abstract

This invention discloses a plug-in / separation device, comprising an active end and a passive end. The active end includes an active end nozzle, a spring, an active end valve core assembly, and an active end housing. The passive end includes a passive end valve seat, a pressure cap, a passive end valve core assembly, a spring, a passive end housing, and a sealing ring. In the separated state, the active end valve core assembly is in contact with the active end housing under the action of an elastic element, and the passive end valve seat is in contact with the mating part under the action of an elastic element. In the plug-in state, the active end valve core assembly is disengaged from the active end housing, and the passive end valve seat is disengaged from the mating part, forming an internal flow channel. The mating fit between the active end and the passive end both adopt a spherical pair. In this invention, the active end and the passive end are sealed in the separated state and form a flow channel in the plug-in state. Furthermore, the axes of the components at both ends are allowed to be misaligned during the plug-in and separation processes. This device does not require an extra load during separation and has advantages such as good sealing performance and low leakage during separation.

Description

Technical Field

[0001] This invention relates to the field of connector technology, and more specifically, to a plug-in separation device, particularly a self-sealing plug-in separation device that allows for axial displacement during the plug-in separation process. Background Technology

[0002] The plug-in / separation device is used for transfer connection in the space attitude and orbit control propulsion system. Before the combined spacecraft separates, the plug-in / separation device is in the plugged-in state, connecting the two reservoirs. After the combined spacecraft separates, the plug-in / separation device separates accordingly, each acting as an end-line seal to prevent liquid leakage in the pipeline. Currently, propulsion systems generally use two types of plug-in devices: one is a mechanical plunger type, which requires coaxial operation during both the plug-in installation and separation in space, placing high demands on the combined spacecraft assembly and subjecting it to significant forces during separation, thus failing to achieve an end-line seal after separation; the other is a floating disconnection mechanism, which requires corresponding control by a motor, ensuring end-line sealing but necessitates electromagnetic components, resulting in greater weight and size, making it unsuitable for many operating conditions.

[0003] Patent document CN109515765A discloses a space electromagnetic docking device, including a tracking vehicle, a target vehicle, and a capture mechanism. Both the tracking and target vehicles include a gas cylinder, a base, a bottom plate, a main electromagnet, auxiliary electromagnets, and an air-floating platform. The base is mounted on the air-floating platform, with a gas cylinder mounted on one side and a bottom plate on the other. The main electromagnet is mounted on the bottom plate, and multiple auxiliary electromagnets are evenly distributed around the main electromagnet. The capture mechanism is mounted on the tracking vehicle and includes a motor, a lead screw, a lead nut, transmission rods, and capture claws. The motor is mounted on the base, and its output shaft is connected to the lead screw rotatably mounted on the base. A lead nut is threaded onto the lead screw, and multiple transmission rods are evenly connected to the lead nut circumferentially. Each transmission rod is hinged with a capture claw, which is hinged to the base. This docking device has a simple and reliable structure, is easy to operate, and can perform space docking more effectively. However, this docking device requires a motor for corresponding control and needs to be equipped with electromagnetic components. It is heavy and bulky, making it unsuitable for many working conditions. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the purpose of this invention is to provide a plug-in separation device.

[0005] According to the plug-in separation device provided by the present invention, there are an active end and a passive end. The active end includes an active end nozzle, an active end valve core assembly and an active end housing. The active end housing, the active end nozzle and the active end valve core assembly are coaxially arranged from the outside to the inside. The active end valve core assembly is movably disposed in the active end nozzle by an elastic element. Both the active end housing and the active end valve core assembly are used to dock with the passive end.

[0006] The passive end includes a passive end valve seat, a passive end valve core assembly, and a passive end housing. The passive end valve core assembly includes a docking part and a mounting part. One end of the docking part is installed inside the passive end housing through the mounting part, and the other end of the docking part is used to dock with the active end valve core assembly. The passive end valve seat is movably disposed outside the docking part through an elastic element. One end of the passive end valve seat is installed inside the passive end housing through the mounting part, and the other end of the passive end valve seat is used to dock with the active end housing.

[0007] When the active end and the passive end are in a separated state, the active end valve core assembly fits against the active end housing under the action of the elastic element to form a sealing pair, and the passive end valve seat fits against the mating part under the action of the elastic element to form a sealing pair.

[0008] When the active end and the passive end are in the plug-in state, the active end valve core assembly is pushed open by the force of the passive end valve core assembly and disengages from the active end housing. The passive end valve seat is pushed open by the force of the active end housing and disengages from the mating part. The mating fit between the active end and the passive end is a spherical pair. The active end and the passive end are internally connected to form a flow channel.

[0009] Preferably, one end of the active end nozzle is coaxially mounted inside one end of the active end housing, the active end valve core assembly is coaxially mounted inside the valve core receiving cavity at one end of the active end nozzle, the active end housing is disposed outside one end of the active end nozzle, and a first spring is provided inside the active end valve core assembly to provide elastic force for the active end valve core assembly;

[0010] A second spring is provided inside one end of the passive end valve seat to provide elastic force to the passive end valve seat. The passive end valve seat and the active end housing are fitted with a spherical pair. The mounting part and the passive end housing are fitted with a spherical pair.

[0011] When the active end and the passive end are in the plugged-in state, an internal cavity is formed between the active end housing and the passive end valve seat, and the active end nozzle, the active end valve core assembly, the internal cavity, the passive end valve core assembly and the passive end housing are connected in sequence.

[0012] Preferably, the passive end valve seat has a hollow structure inside for accommodating the docking part, and the radius of the end of the docking part extending out of the passive end valve seat is greater than the radius of the hollow structure.

[0013] Preferably, the passive end further includes a clamping cover, which is used to press the mounting part onto the passive end housing, and the fit between the clamping cover and the mounting part is a spherical pair.

[0014] Preferably, when the active end and the passive end are in a plug-in state, they are connected by flange-type bolts, and the bolts are explosion bolts, thereby achieving the switching of the separated state.

[0015] Preferably, holes are provided on the side of both the active end valve core assembly and the passive end valve core assembly to serve as flow channels.

[0016] Preferably, a spring cavity for accommodating the second spring is provided between one end of the passive end valve seat and the mating part of the passive end valve core assembly, and the passive end valve core assembly has a hole on the side supporting the second spring for depressurization of the spring cavity.

[0017] Preferably, the active end valve core assembly and the active end housing are sealed by a first sealing element, which is made of a non-metallic material.

[0018] Preferably, the other end of the mating portion of the passive end valve core assembly is sealed to the passive end valve seat by a second sealing element, which is made of a non-metallic material.

[0019] Preferably, it further includes a first sealing ring, a second sealing ring, and a third sealing ring. The first sealing ring is used to seal the moving surfaces of the passive end valve seat and the passive end valve core. The second sealing ring is used to seal between the passive end valve core and the passive end housing. The third sealing ring is used to seal between the passive end valve seat and the active end housing when the passive end and the active end are in the plugged-in state.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention has a simple structure and is easy to operate. By using a spherical design at the docking point of the active end and the passive end, the plug-in separation device occupies a small volume and weight, while allowing the components at both ends to be non-axial during the final assembly and installation process and the separation process in space. This improves the convenience and reliability of the final assembly and installation of the plug-in separation device, reduces the risk of jamming when the two docking spacecraft separate after launch, and makes the separation process of the two spacecraft more stable and reliable.

[0022] 2. The present invention, through the flexible design of the active end and the passive end, ensures that each of them can play the role of end sealing after separation, preventing internal fluid leakage and reducing the amount of leakage during separation.

[0023] 3. The present invention does not require the application of extra loads during separation. Separation can be achieved by destroying the connecting parts between the active end and the passive end. Therefore, the flange connection form with explosive bolts is preferred, which solves the problems of high assembly requirements and large stress during the separation process of the combined aircraft with the installation of the plug-in mechanism. Attached Figure Description

[0024] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure when the active end and the passive end are in a separated state in this invention;

[0027] Figure 3 This is a schematic diagram of the structure when the active end and the passive end are in a state of inter-axis insertion in this invention.

[0028] The diagram shows:

[0029] Active end 100 Passive end valve core assembly 7

[0030] Active end nozzle 1 second spring 8

[0031] First spring 2 passive end housing 9

[0032] Active end valve core assembly 3 first sealing ring 10

[0033] Active end housing 4 Second sealing ring 11

[0034] Passive end 200 third sealing ring 12

[0035] Passive end valve seat 5 first sealing element 301

[0036] Compression cap 6 Second sealing element 701 Detailed Implementation

[0037] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0038] This invention discloses a plug-in separation device, wherein the active end and the passive end are sealed in the separated state and form a flow channel in the plug-in state. The active end and the passive end are connected by a spherical pair, which allows the axes of the two components at both ends to be out of axis during the plug-in and separation processes. The device does not require the application of extra load during separation and has the advantages of good sealing performance and low leakage during separation.

[0039] The plug-in / separation device provided by the present invention includes an active end 100 and a passive end 200. The active end 100 includes an active end nozzle 1, an active end valve core assembly 3, and an active end housing 4. The active end housing 4, the active end nozzle 1, and the active end valve core assembly 3 are coaxially arranged from the outside to the inside. One end of the active end nozzle 1 is coaxially installed inside one end of the active end housing 4. The active end valve core assembly 3 is coaxially installed inside the valve core receiving cavity at one end of the active end nozzle 1. The active end housing 4 is disposed outside one end of the active end nozzle 1 and is used to dock with the passive end 200. The first spring 2 is disposed inside the active end valve core assembly 3 and is used to provide elastic force to the active end valve core assembly 3.

[0040] The passive end 200 includes a passive end valve seat 5, a passive end valve core assembly 7, a second spring 8, and a passive end housing 9. The passive end valve core assembly 7 includes a docking part and a mounting part. One end of the docking part is installed inside the passive end housing 9 through the mounting part, and the other end of the docking part is used to dock with the active end valve core assembly 7.

[0041] The passive end valve seat 5 is disposed outside the docking part. One end of the passive end valve seat 5 is installed inside the passive end housing 9 through the mounting part, and the other end of the passive end valve seat 5 is used to dock with the active end housing 4. The second spring 8 is disposed inside one end of the passive end valve seat 5 and is used to provide elastic force to the passive end valve seat 5. The fit between the passive end valve seat 5 and the active end housing 4 adopts a spherical pair, and the fit between the mounting part and the passive end housing 9 adopts a spherical pair.

[0042] When the active end 100 and the passive end 200 are in a separated state, the active end valve core assembly 3 is in contact with the inner wall of the active end housing 4 under the elastic force of the first spring 2, forming a sealing pair, and the passive end valve seat 5 is in contact with the mating part under the elastic force of the second spring 8, forming a sealing pair; the active end 100 has a sealing function when it works alone after being separated from the passive end 200.

[0043] When the active end 100 and the passive end 200 are in the plug-in state, the active end valve core assembly 3 is pushed open by the force of the passive end valve core assembly 7 and disengages from the inner wall of the active end housing 4. The first spring 2 is in the compressed state. The passive end valve seat 5 is pushed open by the force of the active end housing 4 and disengages from the mating part. The second spring 8 is in the compressed state. When the active end 100 and the passive end 200 are in the plug-in state, their axes are not allowed to be on the same straight line. An internal cavity is formed between the active end housing 4 and the passive end valve seat 5. The active end nozzle 1, the active end valve core assembly 3, the internal cavity, the passive end valve core assembly 7, and the passive end housing 9 are connected in sequence.

[0044] Preferably, the active end nozzle 1 of the active end 100 is connected to the active end housing 4, ensuring a leak-proof connection, for example, by welding. The passive end valve seat 5 has a hollow structure inside to accommodate the mating part, and the radius of the end of the mating part extending out of the passive end valve seat 5 is larger than the radius of the hollow structure. The passive end 200 also includes a clamping cover 6, which is used to press the mounting part against the passive end housing 9. The fit between the clamping cover 6 and the mounting part is a spherical joint.

[0045] When the active end 100 and the passive end 200 are in a plug-in state, they are connected by flange-type bolts, which are explosion bolts, thereby achieving the switching of the separation state.

[0046] Both the active valve core assembly 3 and the passive valve core assembly 7 have holes on their sides to serve as flow channels. A spring cavity for accommodating the second spring 8 is provided between the passive valve seat 5 and one end of the mating portion in the passive valve core assembly 7. The passive valve core assembly 7 has a hole on the side supporting the second spring 8 for depressurizing the spring cavity.

[0047] The active end valve core assembly 3 is sealed to the active end housing 4 by a first sealing element 301, which is made of non-metallic material. The other end of the mating portion of the passive end valve core assembly 7 is sealed to the passive end valve seat 5 by a second sealing element 701, which is also made of non-metallic material.

[0048] The device also includes a first sealing ring 10, a second sealing ring 11, and a third sealing ring 12. The first sealing ring 10 is used to seal the moving surfaces of the passive end valve seat 5 and the passive end valve core 200. The second sealing ring 11 is used to seal the passive end valve core 200 and the passive end housing 9. The third sealing ring 12 is used to seal the passive end valve seat 5 and the active end housing 4 when the passive end 200 and the active end 100 are in the plugged state.

[0049] The working principle of this invention is as follows:

[0050] like Figure 1 As shown, when the plug-in / disconnect device is in the plug-in state, the active end valve core assembly 3, as a moving part, is pushed open by the force of the passive end valve core assembly 7, and the passive end valve seat 5, as a moving part, is pushed open by the force of the active end housing 4. The active end 100 and the passive end 200 are internally interconnected to form a flow channel. The third sealing ring 12 on the passive end valve seat 5 contacts the active end housing 4 and forms a sealing pair. Fluid can flow from the active end nozzle 1 into the active end valve core assembly 3, flow into the active end housing 4 through the side hole of the active end valve core assembly 3, and then flow into the passive end valve seat 5. After passing through the small hole on the side of the passive end valve core assembly 7, it flows into the passive end housing 9, completing the interconnection of the internal flow channels at both ends. The above flow direction can also be reversed.

[0051] like Figure 2 As shown, when the plug-in separation device is in the separated state, the active end valve core assembly 3, as a moving part, is in contact with the active end housing 4 under the elastic force of the first spring 2. The first sealing element 301 in the active end valve core assembly 3 forms a soft-hard contact sealing pair with the active end housing 4, so that the fluid in the active end 100 cannot be leaked out, thus ensuring the sealing effect when the active end 100 works alone.

[0052] like Figure 2 As shown, when the plug-in separation device is in the separated state, the passive end valve seat 5, as a moving part, is in contact with the passive end valve core assembly 7 under the elastic force of the second spring 8. The second sealing element 701 in the passive end valve core assembly 7 forms a soft-hard contact sealing pair with the passive end valve seat 5. At the same time, sealing pairs are formed at the first sealing ring 10 and the second sealing ring 11, respectively, so that the fluid in the passive end B cannot be leaked out, ensuring the sealing effect when the passive end B works alone.

[0053] like Figure 3 As shown, when the plug-in / separation device is in the plug-in state, the passive end valve core assembly 7 is pressed into the passive end housing 9 by the clamping cover 6 and can rotate at a small angle. During the rotation of the passive end valve core assembly 7, the passive end valve seat 5 and the active end housing 4 are connected by a spherical fit to ensure that no external leakage occurs during the rotation process. The passive end valve core assembly 7 and the active end valve core assembly 3 are in spherical-plane contact to ensure that the opening degree of the active end valve core assembly 3 changes very little during the rotation process and will not affect the plug-in / separation state of the plug-in / separation device.

[0054] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0055] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A plug-in / disconnect device, characterized in that, It includes an active end (100) and a passive end (200). The active end (100) includes an active end nozzle (1), an active end valve core assembly (3), and an active end housing (4). The active end housing (4), the active end nozzle (1), and the active end valve core assembly (3) are arranged coaxially from the outside to the inside. The active end valve core assembly (3) is movably arranged inside the active end nozzle (1) through an elastic element. The active end housing (4) and the active end valve core assembly (3) are both used to dock with the passive end (200). The passive end (200) includes a passive end valve seat (5), a passive end valve core assembly (7), and a passive end housing (9). The passive end valve core assembly (7) includes a docking part and a mounting part. One end of the docking part is installed inside the passive end housing (9) through the mounting part, and the other end of the docking part is used to dock with the active end valve core assembly (3). The passive end valve seat (5) is movably disposed outside the docking part through an elastic element. One end of the passive end valve seat (5) is installed inside the passive end housing (9) through the mounting part, and the other end of the passive end valve seat (5) is used to dock with the active end housing (4). When the active end (100) and the passive end (200) are in a separated state, the active end valve core assembly (3) is in contact with the active end housing (4) under the action of the elastic element to form a sealing pair, and the passive end valve seat (5) is in contact with the mating part under the action of the elastic element to form a sealing pair; When the active end (100) and the passive end (200) are in the plug-in state, the active end valve core assembly (3) is pushed open by the force of the passive end valve core assembly (7) and disengages from the active end housing (4). The passive end valve seat (5) is pushed open by the force of the active end housing (4) and disengages from the docking part. The docking fit between the active end (100) and the passive end (200) adopts a spherical pair. The active end (100) and the passive end (200) are internally connected to form a flow channel. One end of the active end nozzle (1) is coaxially mounted inside one end of the active end housing (4), and the active end valve core assembly (3) is coaxially mounted inside the valve core receiving cavity at one end of the active end nozzle (1). The active end housing (4) is located outside one end of the active end nozzle (1). A first spring (2) is provided inside the active end valve core assembly (3) to provide elastic force for the active end valve core assembly (3). A second spring (8) is provided inside one end of the passive end valve seat (5) and is used to provide elastic force for the passive end valve seat (5). The passive end valve seat (5) and the active end housing (4) are fitted with a spherical pair. The mounting part and the passive end housing (9) are fitted with a spherical pair. When the active end (100) and the passive end (200) are in the plug-in state, an internal cavity is formed between the active end housing (4) and the passive end valve seat (5), and the active end nozzle (1), the active end valve core assembly (3), the internal cavity, the passive end valve core assembly (7) and the passive end housing (9) are connected in sequence.

2. The insertion / separation device according to claim 1, characterized in that, The passive end valve seat (5) has a hollow structure inside for accommodating the docking part, and the radius of the end of the docking part extending out of the passive end valve seat (5) is greater than the radius of the hollow structure.

3. The insertion / separation device according to claim 1, characterized in that, The passive end (200) also includes a clamping cover (6), which is used to press the mounting part onto the passive end housing (9). The fit between the clamping cover (6) and the mounting part is a spherical pair.

4. The insertion / separation device according to claim 1, characterized in that, When the active end (100) and the passive end (200) are in a plug-in state, they are connected by flange bolts, which are explosion bolts, thereby achieving the switching of the separation state.

5. The insertion / separation device according to claim 1, characterized in that, Both the active end valve core assembly (3) and the passive end valve core assembly (7) have holes on their sides for use as flow channels.

6. The insertion / separation device according to claim 1, characterized in that, A spring cavity for accommodating the second spring (8) is provided between one end of the passive end valve seat (5) and the docking part of the passive end valve core assembly (7). The passive end valve core assembly (7) has a hole on the side supporting the second spring (8) for depressurization of the spring cavity.

7. The insertion / separation device according to claim 1, characterized in that, The active end valve core assembly (3) and the active end housing (4) are sealed by a first sealing element (301), which is made of non-metallic material.

8. The insertion / separation device according to claim 1, characterized in that, The other end of the mating part of the passive end valve core assembly (7) is sealed to the passive end valve seat (5) by a second sealing element (701), which is made of non-metallic material.

9. The insertion / separation device according to claim 1, characterized in that, It also includes a first sealing ring (10), a second sealing ring (11) and a third sealing ring (12). The first sealing ring (10) is used to seal the moving surfaces of the passive end valve seat (5) and the passive end (200) valve core. The second sealing ring (11) is used to seal between the passive end (200) valve core and the passive end housing (9). The third sealing ring (12) is used to seal between the passive end valve seat (5) and the active end housing (4) when the passive end (200) and the active end (100) are in the plugged state.

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