CN116066643A

CN116066643A - Air pipe connector for carrier rocket

Info

Publication number: CN116066643A
Application number: CN202310354043.9A
Authority: CN
Inventors: 王欣宇; 郭正柔; 罗强; 霍亮; 张�浩; 张庆
Original assignee: Jiangsu Shenlan Aerospace Co ltd
Current assignee: Jiangsu Shenlan Aerospace Co ltd
Priority date: 2023-04-06
Filing date: 2023-04-06
Publication date: 2023-05-05
Anticipated expiration: 2043-04-06
Also published as: CN116066643B

Abstract

The invention relates to an air pipe connector for a carrier rocket, wherein a plug assembly comprises a plug body, a claw and a central rod, one end of the claw is rotationally connected with the plug body, and the central rod controls the claw to swing in the plug body; the central rod is provided with an axial through hole, a falling control air cavity is arranged between the central rod and the plug body, a separation cavity is arranged between one end of the central rod, which is close to the clamping jaw, and the socket, and an external air source supplies air to the two cavities through the axial through hole; the socket assembly is provided with an annular limiting clamping seat which is used for axially extending into the plug body, a sealing ring is arranged between the annular limiting clamping seat and the plug body, the sealing ring is radially attached to the outer circle surface of the annular limiting clamping seat, the end part of the claw is matched with the end part of the annular limiting clamping seat and locked, the matching surface is a conical surface, and the center rod is used for limiting the claw. The jaw type surface contact replaces ball lock type line contact, so that the locking force is improved, the requirement on the pretightening force is low through the axial sealing between the sealing ring and the outer circle surface of the annular limiting clamping seat, and the separation reliability is improved.

Description

Air pipe connector for carrier rocket

Technical Field

The invention relates to the technical field of connectors, in particular to an air pipe connector for a carrier rocket.

Background

In rocket launching technology, a propellant pipeline for conveying a propellant, high-pressure gas, low-pressure gas and an electric signal on an arrow, a gas supply and distribution pipeline and a cable are collectively called an umbilical cord, an interface between the umbilical cord and the arrow is called an arrow ground connector, a connector in the arrow ground connector for providing high-pressure gas for an arrow gas cylinder and the like is called an air pipe connector, and the design of the air pipe connector is a key difficulty in the design of the connector due to high integration level and high gas pressure.

The existing air pipe connector is a ball lock type locking mechanism, the requirements of butt joint, falling (dismounting) and the like are met, radial sealing is achieved between a plug and a socket by adopting an O-shaped ring (namely, the O-shaped ring is installed on the plug, the plug axially moves and is installed to the socket, a sealing surface on the socket is in axial fit contact with the O-shaped ring to achieve radial sealing), initial pretightening force required by the O-shaped ring is provided by a ball lock mechanism, after the ball lock is supplied with air, the ball lock is unlocked and supplies air to the interface between the socket and a ground plug on an arrow of the air pipe connector, so that the air pipe connector is ejected, and separation failure is avoided.

The existing air pipe connector is of a ball lock structure, when in a locking state, the ball lock on the plug is positioned in an annular groove on the socket, the ball lock is in line contact with the annular groove, the provided locking force is small, tools are needed to be used for disassembly and assembly, torque is limited by a torque wrench during assembly, the torque wrench is quite inconvenient, a rubber ring between the socket and the plug is in a radial sealing mode, the pretightening force needed by sealing is provided by the ball lock, leakage is very easy to occur, the requirement on the action time sequence is high, an electromagnetic valve is generally configured behind the connector for controlling, the structure is complex, when air is injected to a separation surface, leakage and pressure relief are generated on the separation surface due to radial sealing of the separation surface, and risks such as separation failure are easy to be caused when the action happens.

Disclosure of Invention

In order to solve the technical problems, the invention provides an air pipe connector for a carrier rocket.

A gas tube connector for a launch vehicle comprising a plug assembly and a socket assembly;

the plug assembly comprises a plug body, a claw and a central rod, wherein the claw and the central rod are arranged in the plug body, the central rod can axially move along the plug body, one end of the claw is rotationally connected with the plug body, and the central rod is used for controlling the claw to swing in the plug body;

the plug assembly is inserted into the socket assembly, a separation cavity is arranged between one end of the central rod, which is close to the clamping jaw, and the socket, and the separation cavity is arranged between the end of the central rod, which is close to the clamping jaw, and the external air source supplies air to the separation control air cavity and the separation cavity through the axial through holes;

the socket assembly is provided with an annular limiting clamping seat, the annular limiting clamping seat axially extends into the plug body when the plug assembly is inserted into the socket assembly, a sealing ring is arranged between the annular limiting clamping seat and the plug body, the sealing ring is radially attached to the outer circumferential surface of the annular limiting clamping seat, the end parts of the clamping jaws are matched with the end parts of the annular limiting clamping seat and are locked, the matching surface is a conical surface, and the center rod is limited to the clamping jaws.

Preferably, the annular limiting clamping seat is provided with a limiting boss, the clamping jaw is provided with a locking boss, when the plug assembly is inserted into the socket assembly, the locking boss is positioned in the annular limiting clamping seat, and the locking boss is matched with the limiting boss and realizes locking.

Preferably, the claw has a limit projection, and when the plug assembly is inserted into the socket assembly, the outer surface of the central rod contacts with the limit projection and forms a limit.

Preferably, a first elastic component is arranged between the central rod and the plug body and is used for pushing the central rod to axially move to a position for limiting the clamping jaw.

Preferably, a push ring is installed in the plug body, a second elastic component is arranged between the push ring and the plug body, the second elastic component is used for pushing the push ring to axially move, when the center rod releases limiting of the clamping jaw, the push ring is used for pushing the clamping jaw to swing and shrink in the direction close to the axis of the center rod, and when the plug component is inserted into the socket component, the end part of the annular limiting clamping seat is abutted to the push ring.

Preferably, the claw is provided with a guide protruding part, and when the push ring moves axially in a direction approaching to the annular limiting clamping seat, the end part of the push ring acts on the guide protruding part and pushes the claw to swing and shrink in a direction approaching to the axis of the central rod.

Preferably, the axial through hole comprises a first hole section and a second hole section, the aperture of the first hole section is larger than that of the second hole Duan Kongjing, the first hole section is communicated with the falling-off control air cavity, and the second hole section is communicated with the separation cavity.

Preferably, the end of the central rod remote from the jaws has a pneumatic fitting for connection to an external air source.

Preferably, the end of the central rod remote from the jaws has an unlocking handle.

Preferably, at least two symmetrical claws are circumferentially arranged on the outer side of the central rod.

In summary, the surface contact of the claw-type locking structure replaces the line contact of the ball-type locking structure, the butt joint locking force is improved, the number of paths and the gas pressure of high-pressure gas supported by the gas pipe connector are improved, the performance of the gas pipe connector is improved, the claw-type locking structure is simple to butt joint and detach, the operation flow can be greatly simplified, meanwhile, the axial sealing is realized through the radial fit between the sealing ring and the outer circle surface of the annular limiting clamping seat, the requirement on the pretightening force is low, the work load of the locking mechanism is reduced, the sealing reliability is improved, and the falling separation reliability is improved during falling separation operation.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention.

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic diagram of the mating of a plug assembly with a receptacle assembly in accordance with the present invention;

FIG. 3 is a schematic illustration of the plug assembly of the present invention shown separated from the receptacle assembly;

fig. 4 is a schematic diagram of the pawl according to the present invention.

The marks in the figure:

1 is a plug body, 2 is a claw, 2-1 is a locking boss, 2-2 is a limit protruding part, 2-3 is a guide protruding part, 3 is a central rod, 4 is an axial through hole, 4-1 is a first hole section, 4-2 is a second hole section, 5 is a falling control air cavity, 6 is a separation cavity, 7 is an annular limit clamping seat, 7-1 is a limit protruding part, 8 is a sealing ring, 9 is a first elastic component, 10 is a push ring, 11 is a second elastic component, 12 is a pneumatic connector, 13 is an unlocking handle, 14 is a socket body, and 15 is an air pipe.

Detailed Description

The present invention will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the substances, and not restrictive of the invention. It should be further noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without collision. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 to 4, an air pipe connector for a launch vehicle comprises a plug assembly and a socket assembly, wherein the plug assembly is used in a plug-in fit with the socket assembly, the socket assembly is arranged at the rocket end, and an air pipe 15 of the plug assembly is used for connecting an air supply pipeline on the ground;

the plug assembly comprises a plug body 1, a claw 2 and a center rod 3, wherein the claw 2 and the center rod 3 are arranged in the plug body 1, the center rod 3 can axially move along the plug body 1, one end of the claw 2 is rotationally connected with the plug body 1, and the axial movement of the center rod 3 in the plug body 1 is used for controlling the claw 2 to swing in the plug body 1;

the central rod 3 is provided with an axial through hole 4, one end of the central rod 3, which is far away from the clamping jaw 2, is used for being connected with an external air source, in particular, the end of the central rod 3, which is far away from the clamping jaw 2, is provided with a pneumatic connector 12 used for being connected with the external air source, a pipeline of the external air source is connected through the pneumatic connector 12, so that air supply is realized, the external air source is used for controlling the plug assembly to be separated from the socket assembly, a falling-off control air cavity 5 is arranged between the central rod 3 and the plug body 1, when the plug assembly is inserted into the socket assembly, a separation cavity 6 is arranged between one end of the central rod 3, which is close to the clamping jaw 2, and the external air source supplies air to the falling-off control air cavity 5 and the separation cavity 6 through the axial through hole 4, and the air supply drives the plug assembly to be separated from the socket assembly;

the socket component comprises a socket body 14 and an axially extending annular limiting clamping seat 7, the annular limiting clamping jaw 2 and the socket body 14 are integrally formed or welded into a whole, when the plug component is inserted into the socket component, the annular limiting clamping seat 7 axially extends into an annular cavity formed in the plug body 1, a sealing ring 8 is arranged between the annular limiting clamping seat 7 and the plug body 1, the sealing ring 8 is arranged on the annular inner wall of the annular cavity, the sealing ring 8 is radially attached to the outer circumferential surface of the annular limiting clamping seat 7, and an axial sealing surface is formed between the annular limiting clamping seat 7 and the plug body 1 due to radial attachment, the pretightening force requirement is low, the work load of a locking mechanism is reduced, the sealing reliability is improved, and the falling separation reliability is improved during falling separation operation, the end part of the clamping jaw 2 is matched with the end part of the annular limiting clamping seat 7 and is locked, the matching surfaces are conical surfaces, namely, the end part of the clamping jaw 2 and the end part of the annular limiting clamping seat 7 are provided with matched conical surfaces, the clamping jaw 2 is limited by the central rod 3, the limiting action of the clamping jaw 2 by the central rod 3 is matched with the conical surface of the end part of the annular limiting clamping seat 7, the locking between the plug assembly and the socket assembly is effectively realized, the butting locking force is improved, the number of paths of high-pressure gas and the gas pressure supported by the gas pipe connector are improved, the performance of the gas pipe connector is improved, meanwhile, the clamping jaw 2 is released from being limited by the central rod 3, and the annular limiting clamping seat 7 can be ensured to be smoothly separated by the conical surface matched design, so that the plug assembly is ensured to be smoothly separated from the socket assembly; the outside air supply is firstly supplied to the falling control air cavity 5 through the axial through hole 4, so that the central rod 3 moves axially, the limit of the central rod 3 to the clamping jaw 2 is relieved, the pressure air enters the separation cavity 6 through the axial through hole 4, the sealing ring 8 plays an effective sealing role, the pressure in the separation cavity 6 starts to rise, and the whole plug assembly is driven to be separated from the socket assembly.

Simultaneously, the end of the center rod 3 far away from the claw 2 is provided with an unlocking handle 13, and when in actual need, an operator pulls the unlocking handle 13 manually to release the limit of the center rod 3 to the claw 2, and then pulls out the plug assembly to realize separation.

Further, the annular limiting clamping seat 7 is provided with the limiting boss 7-1, the clamping claw 2 is provided with the locking boss 2-1, when the plug assembly is inserted into the socket assembly, the locking boss 2-1 is positioned in the annular limiting clamping seat 7, the locking boss 2-1 is matched with the limiting boss 7-1 to realize locking, the matching surface is a conical surface, the limiting boss 7-1 and the locking boss 2-1 are both provided with conical surfaces, the conical surface of the limiting boss 7-1 is an annular conical surface, the conical surface of the locking boss 2-1 is an arc conical surface, a certain locking contact area is ensured, and the locking boss 2-1 can be smoothly separated from the limiting boss 7-1 during unlocking.

Further, the jack catch 2 is provided with the limiting protruding portion 2-2, when the plug assembly is inserted into the socket assembly, the outer surface of the center rod 3 is in contact with the limiting protruding portion 2-2 to form limiting, and the arrangement is capable of effectively guaranteeing limiting of the jack catch 2 by the center rod 3, when the plug assembly is gradually separated from the socket assembly, the center rod 3 moves axially to a position for releasing limiting of the limiting protruding portion 2-2, in the process, the jack catch 2 swings gradually towards the axis direction close to the center rod 3, when the plug assembly is gradually inserted into the socket assembly, the center rod 3 moves axially until the limiting protruding portion 2-2 is in contact with the outer surface of the center rod 3, the center rod 3 is limited to the limiting protruding portion 2-2, and the end portion of the jack catch 2 is matched with the end portion of the annular limiting clamping seat 7 to achieve locking, in the process, the jack catch 2 swings gradually towards the axis direction far away from the center rod 3.

In one embodiment of the present invention, as shown in fig. 2 to 4, a first elastic component 9, specifically, a spring is disposed between the central rod 3 and the plug body 1, the spring is sleeved on the central rod 3, the first elastic component 9 is used for pushing the central rod 3 to move axially to a position limiting the jack catch 2, during the process of inserting the plug assembly into the socket assembly, under the auxiliary action of the elastic force of the first elastic component 9, the central rod 3 is pushed to move axially and move to a position limiting the jack catch 2, and elastic pretightening force is maintained, so that the central rod 3 is prevented from moving reversely axially and being accidentally separated from the position limiting the jack catch 2, and stable and reliable locking is ensured.

Further, install annular push ring 10 in the plug body 1, the jack catch 2 passes the hole of push ring 10, be provided with second elastic component 11 between push ring 10 and the plug body 1, concretely set up to the spring, second elastic component 11 is used for promoting the axial displacement of push ring 10, center pin 3 releases the spacing to jack catch 2, push ring 10 is used for promoting jack catch 2 to the direction swing shrink near center pin 3 axis, in plug assembly inserts the socket subassembly, annular spacing cassette 7 tip butt in push ring 10, when jack catch 2 swings the shrink to extreme position near center pin 3 axis's direction, second elastic component 11 passes through push ring 10 and transmits the effect to jack catch 2, first elastic component 9 also transmits the effect to jack catch 2 through center pin 3, but each part is in balanced state at this moment, jack catch 2 can not swing all the time before other external forces break this kind of balance, in the state of shrink all the time, so state has effectively guaranteed that jack catch 2 can smoothly block into annular spacing cassette 7, in the plug assembly inserts the plug assembly, in the plug assembly during the operation, annular spacing cassette 7 tip 7 of annular spacing 7 tip 7, and the annular spacing cassette 10 tip 10 is moved gradually to the axial direction of the jack catch 2, the effect is broken gradually, the tip 10 is moved to the annular spacing cassette 10, and the tip 10 is moved to the annular spacing between the jack catch 2, the tip 10 is moved gradually to the axial direction is broken, the axial direction is moved to the jack catch 3 to the tip is broken, the jack catch 3 is moved to the effect is moved to the annular spacing between the jack catch 3, the tip 7 is moved gradually is moved to the tip is moved to the jack catch 3, the effect is moved to the effect is broken, the jack catch 2, the effect is moved to the effect is broken.

Further, the clamping jaw 2 is provided with a guide protruding portion 2-3, when the push ring 10 moves axially in the direction approaching the annular limiting clamping seat 7, the end portion of the push ring 10 acts on the guide protruding portion 2-3 and pushes the clamping jaw 2 to swing and shrink in the direction approaching the axis of the central rod 3, and the design of the guide protruding portion 2-3 enables the push ring 10 to smoothly and effectively drive the clamping jaw 2 to swing towards the axis of the central rod 3 through axial movement of the push ring.

In one embodiment of the present invention, as shown in fig. 2 and 3, the axial through hole 4 comprises a first hole section 4-1 and a second hole section 4-2, the first hole section 4-1 has a larger hole diameter than the second hole section 4-2, the first hole section 4-1 is communicated with the shedding control air cavity 5, the second hole section 4-2 is communicated with the separation cavity 6, so that an external air source is directly connected with the first hole section 4-1, firstly, air is supplied to the first hole section 4-1, and air is supplied to the second hole section 4-2 through the first hole section 4-1, most of the air flow with pressure continuously enters the shedding control air cavity 5 through the first hole section 4-1 because the hole diameter of the first hole section 4-1 is larger than the hole diameter of the second hole section 4-2, the air pressure pushes the center rod 3 to axially move in the direction away from the clamping jaw 2, the process is mainly for gradually releasing the swing limit of the center rod 3 to the clamping jaw 2, after the swing limit is released, the pressurized air flow entering the separation cavity 6 through the second hole section 4-2 continuously pushes the plug assembly to be integrally separated from the socket assembly, before the plug assembly is completely separated from the socket assembly, the seal ring 8 always forms perfect axial seal between the annular limit clamping seat 7 and the plug body 1, air leakage is avoided, and separation failure is avoided, and the whole process comprises the limiting process of releasing the center rod 3 to the clamping jaw 2 by the pressurized air flow and the process of separating the plug assembly from the socket assembly by the pressurized air flow.

In one embodiment of the present invention, at least two symmetrically distributed claws 2 are circumferentially arranged on the outer side of the central rod 3, so that the safety and reliability of the locking between the plug assembly and the socket assembly are further effectively ensured, and preferably, the number of the claws 2 symmetrically circumferentially arranged can be 2, 3 or 4, and here, the number of the claws 2 is specifically 3.

In the description of the present specification, reference to the terms "one embodiment/manner," "some embodiments/manner," "example," "a particular example," "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/manner or example is included in at least one embodiment/manner or example of the invention. In this specification, the schematic representations of the above terms are not necessarily for the same embodiment/manner or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/modes or examples described in this specification and the features of the various embodiments/modes or examples can be combined and combined by persons skilled in the art without contradiction.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

It will be appreciated by persons skilled in the art that the above embodiments are provided for clarity of illustration only and are not intended to limit the scope of the invention. Other variations or modifications will be apparent to persons skilled in the art from the foregoing disclosure, and such variations or modifications are intended to be within the scope of the present invention.

Claims

1. A gas pipe connector for a launch vehicle, comprising a plug assembly and a socket assembly;

2. The tracheal connector of claim 1 wherein the annular stop collar has a stop boss and the jaw has a locking boss, the locking boss being located in the annular stop collar when the plug assembly is inserted into the socket assembly, the locking boss mating with the stop boss and effecting locking.

3. The tracheal connector of claim 1, wherein the jaw has a limit projection, the outer surface of the central rod contacting and forming a limit when the plug assembly is inserted into the socket assembly.

4. The tracheal connector of claim 1, wherein a first resilient assembly is disposed between the central rod and the plug body, the first resilient assembly being configured to urge the central rod axially to a position that limits the jaws.

5. The tracheal connector of claim 1, wherein a push ring is mounted in the plug body, a second elastic component is disposed between the push ring and the plug body, the second elastic component is used for pushing the push ring to move axially, when the central rod releases the limit of the clamping jaw, the push ring is used for pushing the clamping jaw to swing and shrink in a direction close to the axis of the central rod, and when the plug component is inserted into the socket component, the end part of the annular limit clamping seat is abutted against the push ring.

6. The tracheal connector of claim 5, wherein the jaws have guide bosses, and wherein when the push ring is axially moved in a direction toward the annular stop collar, the push ring ends act on the guide bosses and urge the jaws to swing and retract in a direction toward the central rod axis.

7. The tracheal connector of claim 1, wherein the axial throughbore comprises a first bore section and a second bore section, the first bore section having a larger bore diameter than the second bore Duan Kongjing, the first bore section in communication with the shedding control air cavity and the second bore section in communication with the separation cavity.

8. The tracheal connector of claim 1 wherein the end of the central rod remote from the jaws has a pneumatic fitting for connection to an external air source.

9. The tracheal connector of claim 1, wherein an end of the central rod remote from the jaws has an unlocking handle.

10. A tracheal tube connector as in any of claims 1 to 9, wherein at least two symmetrically disposed jaws are circumferentially disposed on the outside of the central rod.