Balanced joint for zero-second drop connector of carrier rocket

Abstract

The utility model provides a balanced joint for a zero-second drop connector of a carrier rocket. The balanced joint comprises a plug, a socket, a first sealing ring and a second sealing ring, the plug is inserted into the cavity of the socket; a first sealing ring mounting groove is formed in the outer wall of the plug, and the first sealing ring is arranged in the first sealing ring mounting groove; the inner wall of the cavity of the socket is provided with a second sealing ring installation groove, and the second sealing ring is arranged in the second sealing ring installation groove. According to the zero-second falling-off connector, separation resistance generated by the balance type connector due to rapid compression of the sealing ring is avoided, the separation resistance generated when the zero-second falling-off connector is separated is greatly reduced, and then disturbance to a rocket when the zero-second falling-off connector is separated is reduced.

Description

Technical Field

[0001] This application relates to the field of balanced connector technology, and more particularly to a balanced connector for a zero-second disconnect connector for launch vehicles. Background Art

[0002] With the rapid development of launch vehicle technology, the gas pipe connectors used for rocket-to-ground gas supply and distribution are gradually evolving towards zero-second detachment gas pipe connectors. Since zero-second detachment connectors detach after rocket ignition and liftoff, balanced connectors are commonly used. Balanced connectors mainly consist of plugs, sockets, and O-rings. Because balanced connectors use radial air inlet and outlet, they have no axial separation force during connection compared to traditional straight-insertion connectors, which can improve the reliability of the locking device.

[0003] The existing patent publication number CN105226469A discloses an adaptive motion system for docking and detaching a plug-in connector, characterized by: an on-rocket interface (1), a connector (2), and a support device (3); the on-rocket interface (1) includes an on-rocket socket (101), on which a balanced connector plug (102) is connected, and a through hole is opened in the center of the on-rocket socket (101); the connector (2) includes a connector body (201), on which a balanced connector socket (202) is installed, the balanced connector socket (202) is used to receive the balanced connector plug (102), and a guide rod (203) is provided in the center of the connector body (201), the guide rod (203) cooperating with the through hole. This connector is applied to a rocket gas supply system and is a rapid docking and detachment device for multi-pipe combined gas supply. The end of the balanced connector plug (102) is a closed cavity with openings in the side walls. O-rings are used to seal the side walls above and below the openings. The O-rings are installed on the balanced connector plug (102). During the process of the balanced connector plug (102) being pulled out of the balanced connector socket (202), the O-ring seal is compressed, generating resistance. This separation resistance will cause a disturbance to the rocket.

[0004] Currently, conventional balance connectors use two O-rings for sealing, both installed within the sealing grooves of the connector plug. When the connector is mated, the plug and socket of the balance connector are also mated. When the connector separates from the socket of the balance connector, the two O-rings are compressed to ensure a seal. During separation, the socket of the balance connector is pulled out of the plug, leaving the O-ring on the plug. The second O-ring, initially compressed, enters the annular groove of the socket and then transitions to a free state (no compression). As separation continues, the second O-ring reaches the upper edge of the groove and becomes compressed again. After the plug is completely pulled out of the socket, the second O-ring becomes free again. This process of the second O-ring rapidly transitioning from a free state in the groove to a compressed state at the upper edge of the groove generates a separation resistance. Since multiple balance connectors are typically installed in a zero-second connector, the combined separation resistance of these multiple connectors creates a significant separation resistance. Because the rocket is already in flight (generally at an altitude of no more than 50mm) when the zero-second connector separates, this separation resistance can cause a disturbance to the rocket.

[0005] Therefore, the urgent technical problem to be solved is: how to provide a balanced connector for the zero-second disconnect connector of a launch vehicle, so as to avoid the separation resistance caused by the rapid compression of the sealing ring, significantly reduce the separation resistance when the zero-second disconnect connector is separated, and thus reduce the disturbance to the rocket when the zero-second disconnect connector is separated. Utility Model Content

[0006] The purpose of this application is to provide a balanced connector for a zero-second disconnect connector of a launch vehicle, which avoids the separation resistance caused by the rapid compression of the sealing ring, greatly reduces the separation resistance when the zero-second disconnect connector is separated, and thus reduces the disturbance to the rocket when the zero-second disconnect connector is separated.

[0007] To achieve the above objectives, this application provides a balanced connector for a zero-second detachment connector for a launch vehicle. The balanced connector includes: a plug, a socket, a first sealing ring, and a second sealing ring; the plug is inserted into the cavity of the socket; the outer wall of the plug has a first sealing ring mounting groove, and the first sealing ring is disposed in the first sealing ring mounting groove; the inner wall of the cavity of the socket has a second sealing ring mounting groove, and the second sealing ring is disposed in the second sealing ring mounting groove.

[0008] The balanced connector for a launch vehicle zero-second detachment connector as described above, wherein the first sealing ring and the second sealing ring are disposed at the connection between the plug and the socket.

[0009] The balanced connector for a launch vehicle zero-second detachment connector as described above, wherein the first sealing ring and the second sealing ring are spaced apart.

[0010] As described above, in the balanced connector for a launch vehicle zero-second detachment connector, the second sealing ring is disposed inside the socket; and after the plug is inserted into the socket, the second sealing ring is sealed to the end of the plug near the socket.

[0011] The balanced connector for a launch vehicle zero-second detachment connector as described above, wherein the socket has a receiving cavity into which the end of the plug is inserted; and the second sealing ring mounting groove is formed along the circumferential direction of the inner wall of the receiving cavity.

[0012] The balanced connector for a zero-second detachment connector for a launch vehicle, as described above, wherein the socket has a socket end wall with an opening that communicates with the receiving cavity; the plug passes through the socket end wall opening and is inserted into the receiving cavity.

[0013] The balanced connector for a zero-second detachment connector for a launch vehicle, as described above, wherein the socket has an annular groove; the annular groove is located between the socket end wall and the receiving cavity.

[0014] The balanced connector for a launch vehicle zero-second detachment connector as described above, wherein the socket annular groove is circular.

[0015] The balanced connector for a launch vehicle zero-second detachment connector as described above, wherein both the first sealing ring and the second sealing ring are O-rings.

[0016] In the balanced connector for a launch vehicle zero-second detachment connector as described above, when the plug separates from the socket, the first sealing ring separates from the socket along with the plug, and the second sealing ring remains in the second sealing ring mounting groove of the socket.

[0017] The beneficial effects achieved by this application are as follows:

[0018] (1) When the plug and socket of this application are separated, the first sealing ring separates with the plug and socket, and the second sealing ring remains in the second sealing ring mounting groove of the socket. The second sealing ring does not generate compression resistance, thereby reducing the separation resistance caused by the second sealing ring when the plug and socket are separated, reducing the separation resistance of the zero-second disconnection connector, and thus reducing the disturbance to the rocket when the zero-second disconnection connector is separated. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a schematic diagram of the structure of a balanced connector for a zero-second disconnection connector of a launch vehicle, according to an embodiment of this application.

[0021] Figure 2 This is a schematic diagram of the socket structure according to an embodiment of this application.

[0022] Reference numerals: 1-Plug; 2-Socket; 3-First sealing ring; 4-Second sealing ring; 11-First sealing ring mounting groove; 21-Receiving cavity; 22-Second sealing ring mounting groove; 23-Socket annular groove; 24-Socket end wall; 25-Socket end wall opening; 26-Upper edge of socket annular groove. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0024] like Figure 1 and 2 As shown, this application provides a balanced connector for a zero-second detachment connector for a launch vehicle. The balanced connector includes: a plug 1, a socket 2, a first sealing ring 3, and a second sealing ring 4. The plug 1 is inserted into the cavity of the socket 2. The outer wall of the plug 1 is provided with a first sealing ring mounting groove 11, and the first sealing ring 3 is disposed in the first sealing ring mounting groove 11. The inner wall of the cavity of the socket 2 is provided with a second sealing ring mounting groove 22, and the second sealing ring 4 is disposed in the second sealing ring mounting groove 22.

[0025] It should be explained that the plug 1 of the balanced connector is only provided with a first sealing ring mounting groove 11 for installing the first sealing ring 3, and the socket 2 of the balanced connector is provided with a second sealing ring mounting groove 22 for installing the second sealing ring 4. The second sealing ring 4 is installed on the socket 2 of the balanced connector. When the plug 1 and the socket 2 are separated, the second sealing ring 4 remains on the socket 2 of the balanced connector. It no longer undergoes multiple "compression-free-compression-free" transformation states when the plug 1 and the socket 2 are separated. It only changes from a compressed state to a free state and does not need to change to a compressed state again. Therefore, this type of balanced connector will not generate separation resistance caused by the rapid compression of the sealing ring. The separation resistance when the zero-second disconnect connector is separated can be greatly reduced, thereby reducing the disturbance to the rocket when the plug 1 and the socket 2 are separated.

[0026] like Figure 1 As shown, the first sealing ring 3 and the second sealing ring 4 are disposed at the connection between the plug 1 and the socket 2. The first sealing ring 3 and the second sealing ring 4 are spaced apart. The first sealing ring 3 and the second sealing ring 4 are disposed at the connection between the plug 1 and the socket 2 to achieve a seal at the connection between the plug 1 and the socket 2, thereby improving the sealing effect.

[0027] The second sealing ring 4 is disposed inside the socket 2; and after the plug 1 is inserted into the socket 2, the second sealing ring 4 is sealed and connected to the end of the plug 1 near the socket 2. It should be explained that the two sealing rings (the first sealing ring 3 and the second sealing ring 4) are respectively installed on the two separate parts of the balanced connector, that is, respectively installed on the plug 1 and the socket 2, and the sealing ring installed on the inner side is installed on the socket 2 of the balanced connector, thereby reducing the separation resistance caused by the sealing ring when the balanced connector is separated.

[0028] like Figure 1 and 2 As shown, the socket 2 has a receiving cavity 21, which is adapted to insert a plug 1, with the end of the plug 1 inserted into the receiving cavity 21; a second sealing ring mounting groove 22 is formed along the circumferential direction of the inner wall of the receiving cavity 21. A first sealing ring mounting groove 11 is formed along the circumferential direction of the outer wall of the plug 1.

[0029] like Figure 1 and 2 As shown, the socket 2 has a socket end wall 24 with an opening 25, which communicates with the receiving cavity 21. The plug 1 passes through the socket end wall opening 25 and is inserted into the receiving cavity 21. Preferably, the plug 1 is cylindrical. The socket end wall opening 25 is a circular hole suitable for inserting the plug 1.

[0030] like Figure 1 and 2As shown, the socket 2 has an annular groove 23; the annular groove 23 is located between the socket end wall 24 and the receiving cavity 21. The annular groove 23 is circular. The first sealing ring 3 and the second sealing ring 4 are disposed on both sides of the annular groove 23 and are located at the connection between the plug 1 and the socket 2, thereby achieving a seal at the connection between the plug 1 and the socket 2.

[0031] like Figure 1 As shown, the socket end wall 24 has an upper edge 26 of the socket annular groove 23 on the side near the socket annular groove 23. The upper edge 26 of the socket annular groove has an inclined chamfered structure. The inclined shape of the upper edge 26 of the socket annular groove facilitates the smooth removal of the plug 1 from the socket 2 and avoids jamming.

[0032] In a specific embodiment of this utility model, both the first sealing ring 3 and the second sealing ring 4 are O-rings. Both the first sealing ring 3 and the second sealing ring 4 are existing O-rings.

[0033] In a specific embodiment of this utility model, when the plug 1 separates from the socket 2, the first sealing ring 3 separates along with the plug 1 from the socket 2, and the second sealing ring 4 remains in the second sealing ring mounting groove 22 of the socket 2. After the plug 1 is pulled out of the socket 2, the second sealing ring 4 changes from a compressed state to a free state, and the second sealing ring 4 remains in the second sealing ring mounting groove 22. This ensures that when the plug 1 separates from the socket 2, the second sealing ring 4 does not move with the plug 1, and the second sealing ring 4 does not move from a free state within the socket annular groove 23 to a compressed state at the upper edge 26 of the socket annular groove, thus preventing separation resistance caused by the rapid compression of the second sealing ring 4.

[0034] It should be explained that in the prior art, both sealing rings are set in the mounting groove opened on the side wall of the plug 1. When the plug 1 is separated from the socket 2, the sealing ring located on the side of the plug 1 near the socket 2 is pulled out of the socket 2. During the pulling process, the sealing ring located on the side of the plug 1 near the socket 2 will be squeezed by the upper edge 26 of the socket annular groove and will be compressed, which will generate separation resistance. This results in a large separation resistance for the zero-second disconnect connector. However, the second sealing ring 4 of this application will not move from the free state in the socket annular groove 23 to the upper edge 26 of the socket annular groove and change to a compressed state. Therefore, there will be no separation resistance caused by the rapid compression of the second sealing ring 4, which has a better technical effect.

[0035] The beneficial effects achieved by this application are as follows:

[0036] (1) When the plug and socket of this application are separated, the first sealing ring separates with the plug and socket, and the second sealing ring remains in the second sealing ring mounting groove of the socket. The second sealing ring does not generate compression resistance, thereby reducing the separation resistance caused by the second sealing ring when the plug and socket are separated, reducing the separation resistance of the zero-second disconnection connector, and thus reducing the disturbance to the rocket when the zero-second disconnection connector is separated.

[0037] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0038] In the description of this application, the word "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to implement and use the present invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the present invention can be implemented without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the present invention with unnecessary detail. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0039] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A balanced connector for a zero-second disconnect connector of a launch vehicle, characterized in that, The balanced connector includes: a plug, a socket, a first sealing ring, and a second sealing ring; The plug is inserted into the cavity of the socket; The outer wall of the plug is provided with a first sealing ring mounting groove, and the first sealing ring is disposed in the first sealing ring mounting groove. The socket has a second sealing ring mounting groove on its inner wall cavity, and the second sealing ring is installed in the second sealing ring mounting groove.

2. The balanced connector for a zero-second disconnect connector of a launch vehicle according to claim 1, characterized in that, The first sealing ring and the second sealing ring are disposed at the connection between the plug and the socket.

3. The balanced connector for a zero-second disconnect connector of a launch vehicle according to claim 2, characterized in that, The first sealing ring and the second sealing ring are spaced apart.

4. The balanced connector for a zero-second disconnect connector of a launch vehicle according to claim 3, characterized in that, The second sealing ring is disposed inside the socket; Furthermore, after the plug is inserted into the socket, the second sealing ring is sealed and connected to the end of the plug near the socket.

5. The balanced connector for a zero-second disconnect connector of a launch vehicle according to claim 3, characterized in that, The socket has a receiving cavity. The end of the plug is inserted into the receiving cavity; The second sealing ring mounting groove is opened along the circumferential direction of the inner wall of the receiving cavity.

6. The balanced connector for a zero-second disconnect connector of a launch vehicle according to claim 5, characterized in that, The socket has a socket end wall. The socket end wall has a socket end wall opening, and the socket end wall opening communicates with the receiving cavity; The plug is inserted into the receiving cavity after passing through the opening in the end wall of the socket.

7. The balanced connector for a zero-second disconnect connector of a launch vehicle according to claim 6, characterized in that, The socket has an annular groove. The annular groove of the socket is located between the end wall of the socket and the receiving cavity.

8. The balanced connector for a zero-second disconnect connector of a launch vehicle according to claim 7, characterized in that, The socket's annular groove is circular.

9. The balanced connector for a zero-second disconnect connector of a launch vehicle according to claim 1, characterized in that, Both the first sealing ring and the second sealing ring are O-rings.

10. The balanced connector for a zero-second disconnect connector of a launch vehicle according to claim 1, characterized in that, When the plug is separated from the socket, the first sealing ring separates from the socket along with the plug, while the second sealing ring remains in the second sealing ring mounting groove of the socket.

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